Cadmium (Rebekka Meeks)
•
2 likes•1,282 views
Friedrich Stromeyer discovered cadmium in 1817 while studying calamine. Cadmium is a soft, silvery-white metal that occurs naturally as a byproduct of zinc mining. It has many industrial uses, including in nickel-cadmium batteries, solar panels, and nuclear reactors. Cadmium is toxic to humans and environmental exposure can occur through cigarette smoke, coal burning, contaminated food/water, and landfill runoff.
Report
Share
Report
Share
Recommended
Major Trace and Ree
This document summarizes different types of elements found in the Earth's crust, including their abundance, distribution, and behavior. It discusses major elements, which make up over 90% of the crust by weight. It also describes trace elements, which occur in very low concentrations, and rare earth elements. Trace elements provide information about magmatic processes. Rare earth elements are a set of 17 elements in the periodic table and tend to be late crystallizing with higher ionic radii. Their relative abundances also provide insights into melting histories.
Mining explosives CLASSIFICATION OF EXPLOSIVES
Mining explosives are classified basics process and When selecting explosives there are four basic categories
Explosive products ppt
The document provides a history of explosives and describes different types of explosives. It discusses how explosives were first used in the 14th century for guns and how safety fuse was invented. The modern explosive industry began in the 19th century with discoveries like mercury fulminate and nitroglycerin. Alfred Nobel later invented dynamite by mixing nitroglycerin with kieselguhr. The document then describes different types of explosives like dynamite, ANFO, water gels, and emulsions. It provides details on their compositions and uses.
Glass Analysis in Forensic Science
Glass can be analyzed and compared based on its physical and chemical properties. The refractive index and density are often used to determine if two glass samples could have originated from the same source. Refractive index is the most discriminating property and can be measured using the Becke line method. Other properties like thickness, curvature, fluorescence, and elemental composition through techniques like SEM-EDS can also be analyzed, but require larger sample sizes. The pattern of radial and concentric cracks from a fracture can provide information about the direction of impact.
Jisha murder case
This is the presentation made on thej Jisha murder a case that happened in Kerala in April 2016. It has become famous case as it happend in backdrop of kerala legislative elections.
Chromite ore
Chromite ore beneficiation involves processes to improve the chromium to iron ratio in chromite ore. These include comminution processes like crushing and grinding followed by concentration processes like gravity separation using spirals and shaking tables. This allows upgrading of low grade chromite ore with 20-30% Cr2O3 found in India to marketable ore with 45% Cr2O3 and 45-50% recovery. Major challenges in chromite beneficiation include losses in tailings, utilization of lateritic waste, and dealing with variable ore characteristics.
Application of Rare Earth Elements in Geological Studies
The document summarizes two seminar presentations and a research study on the applications of rare earth elements in geological studies. It begins with introducing rare earth elements and outlining their classification and geology. It then discusses various applications of rare earth elements in provenance studies, sedimentary processes, petrogenetic modeling, geochronology, and paleoenvironmental reconstruction. Three case studies are presented that apply rare earth element analysis to investigate shale compositions, deduce provenance of clastic sediments, and reconstruct hydrocarbon generation history.
History of firearms
The document provides a history of firearms, describing their evolution from early hand cannons in China in the 13th century to modern centerfire weapons. It outlines key developments like the matchlock, wheellock, flintlock, percussion cap, pinfire, rimfire systems. Each new system improved ignition reliability, accuracy, and rate of fire, culminating in centerfire cartridges that enabled self-contained ammunition and rapid reloading.
Recommended
Major Trace and Ree
This document summarizes different types of elements found in the Earth's crust, including their abundance, distribution, and behavior. It discusses major elements, which make up over 90% of the crust by weight. It also describes trace elements, which occur in very low concentrations, and rare earth elements. Trace elements provide information about magmatic processes. Rare earth elements are a set of 17 elements in the periodic table and tend to be late crystallizing with higher ionic radii. Their relative abundances also provide insights into melting histories.
Mining explosives CLASSIFICATION OF EXPLOSIVES
Mining explosives are classified basics process and When selecting explosives there are four basic categories
Explosive products ppt
The document provides a history of explosives and describes different types of explosives. It discusses how explosives were first used in the 14th century for guns and how safety fuse was invented. The modern explosive industry began in the 19th century with discoveries like mercury fulminate and nitroglycerin. Alfred Nobel later invented dynamite by mixing nitroglycerin with kieselguhr. The document then describes different types of explosives like dynamite, ANFO, water gels, and emulsions. It provides details on their compositions and uses.
Glass Analysis in Forensic Science
Glass can be analyzed and compared based on its physical and chemical properties. The refractive index and density are often used to determine if two glass samples could have originated from the same source. Refractive index is the most discriminating property and can be measured using the Becke line method. Other properties like thickness, curvature, fluorescence, and elemental composition through techniques like SEM-EDS can also be analyzed, but require larger sample sizes. The pattern of radial and concentric cracks from a fracture can provide information about the direction of impact.
Jisha murder case
This is the presentation made on thej Jisha murder a case that happened in Kerala in April 2016. It has become famous case as it happend in backdrop of kerala legislative elections.
Chromite ore
Chromite ore beneficiation involves processes to improve the chromium to iron ratio in chromite ore. These include comminution processes like crushing and grinding followed by concentration processes like gravity separation using spirals and shaking tables. This allows upgrading of low grade chromite ore with 20-30% Cr2O3 found in India to marketable ore with 45% Cr2O3 and 45-50% recovery. Major challenges in chromite beneficiation include losses in tailings, utilization of lateritic waste, and dealing with variable ore characteristics.
Application of Rare Earth Elements in Geological Studies
The document summarizes two seminar presentations and a research study on the applications of rare earth elements in geological studies. It begins with introducing rare earth elements and outlining their classification and geology. It then discusses various applications of rare earth elements in provenance studies, sedimentary processes, petrogenetic modeling, geochronology, and paleoenvironmental reconstruction. Three case studies are presented that apply rare earth element analysis to investigate shale compositions, deduce provenance of clastic sediments, and reconstruct hydrocarbon generation history.
History of firearms
The document provides a history of firearms, describing their evolution from early hand cannons in China in the 13th century to modern centerfire weapons. It outlines key developments like the matchlock, wheellock, flintlock, percussion cap, pinfire, rimfire systems. Each new system improved ignition reliability, accuracy, and rate of fire, culminating in centerfire cartridges that enabled self-contained ammunition and rapid reloading.
Crime scene investigator
A forensic nurse applies forensic science and nursing education to collect and preserve evidence, analyze trauma and death-related medical issues, and treat victims. They require nursing education and training as well as experience in areas like evidence collection, documentation, and forensic photography. Forensic nurses work in various specialties like collecting evidence at crime scenes, assessing individuals for court-ordered psychiatric evaluations, and treating victims of crimes.
Role of Trace Elements In Petrogenesis
Trace elements occur in very low concentrations in rocks and provide important information about magmatic processes. They can be classified as compatible or incompatible based on whether they fit easily into mantle mineral crystal structures. Geochemical analysis of trace elements using techniques like XRF and ICP-MS allows determination of magma source and depth, identification of fractionating phases, and testing of models of magmatic differentiation. Trace elements are especially useful for rare earth elements, which indicate the type of basalt and can identify fractionating phases from REE patterns.
Role of Chemistry in Forensic Analysis
This document discusses various techniques used in forensic toxicology analysis, including presumptive and confirmatory drug testing, breathalyzer tests to measure blood alcohol concentration, and ink and fingerprint analysis. It describes common colorimetric and microcrystalline presumptive drug tests, as well as confirmatory tests using gas chromatography and mass spectrometry. Methods for developing latent fingerprints are outlined, such as powdering, vacuum metal deposition, iodine fuming, ninhydrin staining, and cyanoacrylate fuming. The principles of fingerprint patterns and classification are also briefly covered.
Forensic chemistry introduction
The document discusses forensic science and evidence analysis. It begins with an activity for students to list types of forensic evidence. It then discusses Locard's exchange principle which states that criminals leave evidence behind and take evidence with them during crimes. The document outlines the goals of forensic science to determine the provenance or origin of evidence and link it to people, places, or things. It describes the different departments in a crime lab and types of analyses performed. The roles of forensic scientists and expert witnesses are also summarized.
SULFIDE MINERALIZATION IN EGYPT
Sulfide mineralization are the main resource for exploiting Pb, Zn, and Cu metals in Egypt.
Sulfide mineralization is represented by four sulfide types of the different setting, lithology and ages, namely:
i) Lead-Zinc sulphide Deposits
ii) Cu-NiCo sulphide Deposits
This type of mineralization is well represented in Abu Swayel in South Eastern Desert. The ore is closely related to mafic-ultramafic and gabbro of ophiolitic rocks.
iii) Cu-Ni sulphide deposits
This type of mineralization occurs in layered mafic-ultramafic intrusions like gabbro rocks at Akarm and El Geneina .
iv) Stratiform Massive Sulphide (Zn-Cu-Pb) Deposits
This type of mineralization is represented by a group of small lenses associated with talc deposits in South Eastern Desert at: Um Samuki, Helgit, Maakal, Atshan, Darhib, Abu Gurdi, and Egat.
Fingerprint detection
Fingerprints are unique impressions left by friction ridges on the fingers. They have been used for identification since the 19th century. There are various techniques to develop latent fingerprints including powdering, cyanoacrylate fuming, chemical developers like ninhydrin, and vacuum metal deposition. Fingerprints can be classified based on patterns of loops, whorls and arches. They are widely used for criminal identification, improving security through biometric authentication, and enhancing device security through automatic recognition.
Forensic chemistry
This document provides an overview of forensic analysis and the use of biosensors in various forensic applications. It discusses the definition of forensic science and some key branches including forensic chemistry, toxicology, doping analysis, and poisons analysis. Forensic chemistry involves the use of analytical techniques like chromatography and spectroscopy to identify unknown substances. Forensic toxicology analyzes biological samples to determine the presence of toxins, drugs, or poisons. The document also describes how biosensors have been used to detect substances like cocaine, testosterone, and arsenic.
Scope and significance of forensic chemistry
Forensic chemistry is the application of chemistry and its subfield, forensic toxicology, in a legal setting. A forensic chemist can assist in the identification of unknown materials found at a crime scene.[1] Specialists in this field have a wide array of methods and instruments to help identify unknown substances. These include high-performance liquid chromatography, gas chromatography-mass spectrometry, atomic absorption spectroscopy, Fourier transform infrared spectroscopy, and thin layer chromatography. The range of different methods is important due to the destructive nature of some instruments and the number of possible unknown substances that can be found at a scene. Forensic chemists prefer using nondestructive methods first, to preserve evidence and to determine which destructive methods will produce the best results.
Along with other forensic specialists, forensic chemists commonly testify in court as expert witnesses regarding their findings. Forensic chemists follow a set of standards that have been proposed by various agencies and governing bodies, including the Scientific Working Group on the Analysis of Seized Drugs. In addition to the standard operating procedures proposed by the group, specific agencies have their own standards regarding the quality assurance and quality control of their results and their instruments. To ensure the accuracy of what they are reporting, forensic chemists routinely check and verify that their instruments are working correctly and are still able to detect and measure various quantities of different substances.
Nuclear waste disposal and its geological importance
The document discusses nuclear waste disposal and its geological importance. It describes the different types of nuclear waste - high, intermediate, and low level waste. It explains how waste is produced and stored. The key disposal methods discussed are deep geological disposal for high level waste, near-surface disposal for low level waste, and sulfide sponge and Notre Dame Thorium Borate-1 which can remove radionuclides like strontium-90 and technetium from nuclear waste. Ocean dumping was also mentioned but is now banned in most countries.
Examination of chemicals in trap cases
Examination of chemicals like Phenolphthalein in Trap / Bribe Cases. It is very important to know for police and the general public how to use phenolphthalein in bribe case.
Forensic photography
Presentation explain about forensic photography and history, techniques used in forensic photography.
Coal mine
This document discusses coal rank, grade, and type. It provides definitions and classifications for these coal properties.
Coal rank refers to the degree of coalification or thermal maturation of coal, ranging from lignite to anthracite. Coal grade is based on purity and ash content. Coal type is distinguished by the type of plant materials that formed the coal. These properties are independent but can vary spatially. Coal is first classified by rank to determine its utilization. Rank is determined through parameters like carbon content, energy value, and maceral composition that change with the coalification process. Coal plies form a basis for sampling and correlation within a coal seam based on variations in lithotype or partings.
Fire assaying
Fire assaying is a method of determining the proportion of precious metals like gold and silver in ores. It involves melting samples with fluxes at high temperatures. The metals dissolve in molten lead and are separated from slag. Lead is removed by oxidation, leaving a gold-silver alloy called dore. Acid treatment separates silver from gold. Fire assaying provides an economical way to analyze large samples and is still widely used today due to its accuracy and simplicity despite the development of modern analytical techniques.
Internal ballistics
Internal ballistics is the study of a projectile's behavior from ignition until it exits the gun barrel. It examines factors like lock time, ignition time, and barrel time. Piobert's law states that gunpowder burns layer by layer. Newton's third law means that for every action there is an equal and opposite reaction, causing recoil. Recoil velocity can be calculated using the projectile and gun masses and velocities. Rusting and erosion over time degrade the gun barrel and reduce accuracy.
Topic 1-Concepts of an ore deposit
This document provides an outline for a lecture series on mining geology. It introduces key concepts related to mining, including definitions of mining, minerals, and ore deposits. It discusses various types of ore deposits and characteristics that determine their economic viability, such as grade, shape, depth, and stability. The document also lists topics that will be covered in each lecture, including ore mineralogy, the mining cycle, resource classification, mining methods, processing, waste management, and environmental issues. The series aims to give students a non-technical overview of the mining and mineral extraction process.
Forensic odontology case study
Ted Bundy was an American serial killer who confessed to killing numerous young women between 1974 and 1978. He would bludgeon and strangle his victims, and also engaged in rape and necrophilia. In 1978, Bundy was suspected of killing two young women, Lisa Levy and Martha Bowman. Investigators found an odd bite mark on Lisa Levy's buttock. A dental impression was taken of Bundy's teeth without his consent and compared to photographs of the bite mark. A forensic dentist testified that the unique structure and alignment of Bundy's teeth matched the bite mark, providing crucial evidence that led to Bundy's conviction.
Gun shot residue
This document discusses gunshot residue (GSR) and its detection in forensic investigations. It defines GSR as chemical and particulate components released when a gun is fired. GSR can be found on hands, skin, clothing, and nearby surfaces. Various techniques are described for collecting and detecting GSR, including dry collection methods using wax or tape lifts, wet collection using swabs or solvent washes, and analytical detection using microscopy, X-ray fluorescence, chemical tests for nitrates, lead and barium. The composition of GSR depends on factors like the gun's propellant and projectile materials. Detection of GSR can help answer questions in shooting investigations like whether a suspect fired a gun or if a wound was caused by
Development of Latent Fingerprints
This presentation is about the analysis and relevance of Latent Fingerprints found majorly in all major types of crime scenes
Andesite
Andesite is an extrusive igneous rock of intermediate composition typically dominated by plagioclase feldspar with pyroxene and/or hornblende. It forms from the mixing of basaltic and crustal magmas in continental margins above subduction zones. Andesites are the most abundant volcanic rocks in island arcs, occurring in belts above Benioff zones. They have been used historically as ornamental stone for buildings.
Geochemical cycle and mobility of elements
The document discusses geochemical concepts relevant to mineral exploration, including the geochemical environment, cycle, dispersion, and mobility of elements. It describes the deep-seated and surfacial environments and how materials move between them in the geochemical cycle. Mobility depends on factors like viscosity and particle size. Hypogene mobility occurs under high pressure-temperature conditions, while supergene mobility is influenced by siliceous or sulfide environments at the surface. Indicator and pathfinder elements are discussed for detecting targeted ore deposits.
Helium (David Tucker)
Helium is a colorless, odorless noble gas that was discovered in 1895. It is nonflammable and less dense than air, so it is often used in balloons and blimps. Helium exists as a trace element in the atmosphere but is primarily found trapped within rocks and minerals in the earth's crust. It is obtained commercially as a byproduct of natural gas extraction. Helium has no known compounds and is inert, making it useful for applications like welding, breathing mixtures, and cryogenics where non-reactivity is important.
Ruthenium (Brittany Lewin)
Ruthenium is a rare hard white metal that was discovered in 1827 in Russia. It has a high melting point of 2,250°C and boiling point of 4,150°C. Ruthenium is used in the electronic and chemical industries and for making wear-resistant electrical contacts, jet engine blades, and fountain pens. It is one of the rarest metals on Earth and is found in North and South America and South Africa.
More Related Content
What's hot
Crime scene investigator
A forensic nurse applies forensic science and nursing education to collect and preserve evidence, analyze trauma and death-related medical issues, and treat victims. They require nursing education and training as well as experience in areas like evidence collection, documentation, and forensic photography. Forensic nurses work in various specialties like collecting evidence at crime scenes, assessing individuals for court-ordered psychiatric evaluations, and treating victims of crimes.
Role of Trace Elements In Petrogenesis
Trace elements occur in very low concentrations in rocks and provide important information about magmatic processes. They can be classified as compatible or incompatible based on whether they fit easily into mantle mineral crystal structures. Geochemical analysis of trace elements using techniques like XRF and ICP-MS allows determination of magma source and depth, identification of fractionating phases, and testing of models of magmatic differentiation. Trace elements are especially useful for rare earth elements, which indicate the type of basalt and can identify fractionating phases from REE patterns.
Role of Chemistry in Forensic Analysis
This document discusses various techniques used in forensic toxicology analysis, including presumptive and confirmatory drug testing, breathalyzer tests to measure blood alcohol concentration, and ink and fingerprint analysis. It describes common colorimetric and microcrystalline presumptive drug tests, as well as confirmatory tests using gas chromatography and mass spectrometry. Methods for developing latent fingerprints are outlined, such as powdering, vacuum metal deposition, iodine fuming, ninhydrin staining, and cyanoacrylate fuming. The principles of fingerprint patterns and classification are also briefly covered.
Forensic chemistry introduction
The document discusses forensic science and evidence analysis. It begins with an activity for students to list types of forensic evidence. It then discusses Locard's exchange principle which states that criminals leave evidence behind and take evidence with them during crimes. The document outlines the goals of forensic science to determine the provenance or origin of evidence and link it to people, places, or things. It describes the different departments in a crime lab and types of analyses performed. The roles of forensic scientists and expert witnesses are also summarized.
SULFIDE MINERALIZATION IN EGYPT
Sulfide mineralization are the main resource for exploiting Pb, Zn, and Cu metals in Egypt.
Sulfide mineralization is represented by four sulfide types of the different setting, lithology and ages, namely:
i) Lead-Zinc sulphide Deposits
ii) Cu-NiCo sulphide Deposits
This type of mineralization is well represented in Abu Swayel in South Eastern Desert. The ore is closely related to mafic-ultramafic and gabbro of ophiolitic rocks.
iii) Cu-Ni sulphide deposits
This type of mineralization occurs in layered mafic-ultramafic intrusions like gabbro rocks at Akarm and El Geneina .
iv) Stratiform Massive Sulphide (Zn-Cu-Pb) Deposits
This type of mineralization is represented by a group of small lenses associated with talc deposits in South Eastern Desert at: Um Samuki, Helgit, Maakal, Atshan, Darhib, Abu Gurdi, and Egat.
Fingerprint detection
Fingerprints are unique impressions left by friction ridges on the fingers. They have been used for identification since the 19th century. There are various techniques to develop latent fingerprints including powdering, cyanoacrylate fuming, chemical developers like ninhydrin, and vacuum metal deposition. Fingerprints can be classified based on patterns of loops, whorls and arches. They are widely used for criminal identification, improving security through biometric authentication, and enhancing device security through automatic recognition.
Forensic chemistry
This document provides an overview of forensic analysis and the use of biosensors in various forensic applications. It discusses the definition of forensic science and some key branches including forensic chemistry, toxicology, doping analysis, and poisons analysis. Forensic chemistry involves the use of analytical techniques like chromatography and spectroscopy to identify unknown substances. Forensic toxicology analyzes biological samples to determine the presence of toxins, drugs, or poisons. The document also describes how biosensors have been used to detect substances like cocaine, testosterone, and arsenic.
Scope and significance of forensic chemistry
Forensic chemistry is the application of chemistry and its subfield, forensic toxicology, in a legal setting. A forensic chemist can assist in the identification of unknown materials found at a crime scene.[1] Specialists in this field have a wide array of methods and instruments to help identify unknown substances. These include high-performance liquid chromatography, gas chromatography-mass spectrometry, atomic absorption spectroscopy, Fourier transform infrared spectroscopy, and thin layer chromatography. The range of different methods is important due to the destructive nature of some instruments and the number of possible unknown substances that can be found at a scene. Forensic chemists prefer using nondestructive methods first, to preserve evidence and to determine which destructive methods will produce the best results.
Along with other forensic specialists, forensic chemists commonly testify in court as expert witnesses regarding their findings. Forensic chemists follow a set of standards that have been proposed by various agencies and governing bodies, including the Scientific Working Group on the Analysis of Seized Drugs. In addition to the standard operating procedures proposed by the group, specific agencies have their own standards regarding the quality assurance and quality control of their results and their instruments. To ensure the accuracy of what they are reporting, forensic chemists routinely check and verify that their instruments are working correctly and are still able to detect and measure various quantities of different substances.
Nuclear waste disposal and its geological importance
The document discusses nuclear waste disposal and its geological importance. It describes the different types of nuclear waste - high, intermediate, and low level waste. It explains how waste is produced and stored. The key disposal methods discussed are deep geological disposal for high level waste, near-surface disposal for low level waste, and sulfide sponge and Notre Dame Thorium Borate-1 which can remove radionuclides like strontium-90 and technetium from nuclear waste. Ocean dumping was also mentioned but is now banned in most countries.
Examination of chemicals in trap cases
Examination of chemicals like Phenolphthalein in Trap / Bribe Cases. It is very important to know for police and the general public how to use phenolphthalein in bribe case.
Forensic photography
Presentation explain about forensic photography and history, techniques used in forensic photography.
Coal mine
This document discusses coal rank, grade, and type. It provides definitions and classifications for these coal properties.
Coal rank refers to the degree of coalification or thermal maturation of coal, ranging from lignite to anthracite. Coal grade is based on purity and ash content. Coal type is distinguished by the type of plant materials that formed the coal. These properties are independent but can vary spatially. Coal is first classified by rank to determine its utilization. Rank is determined through parameters like carbon content, energy value, and maceral composition that change with the coalification process. Coal plies form a basis for sampling and correlation within a coal seam based on variations in lithotype or partings.
Fire assaying
Fire assaying is a method of determining the proportion of precious metals like gold and silver in ores. It involves melting samples with fluxes at high temperatures. The metals dissolve in molten lead and are separated from slag. Lead is removed by oxidation, leaving a gold-silver alloy called dore. Acid treatment separates silver from gold. Fire assaying provides an economical way to analyze large samples and is still widely used today due to its accuracy and simplicity despite the development of modern analytical techniques.
Internal ballistics
Internal ballistics is the study of a projectile's behavior from ignition until it exits the gun barrel. It examines factors like lock time, ignition time, and barrel time. Piobert's law states that gunpowder burns layer by layer. Newton's third law means that for every action there is an equal and opposite reaction, causing recoil. Recoil velocity can be calculated using the projectile and gun masses and velocities. Rusting and erosion over time degrade the gun barrel and reduce accuracy.
Topic 1-Concepts of an ore deposit
This document provides an outline for a lecture series on mining geology. It introduces key concepts related to mining, including definitions of mining, minerals, and ore deposits. It discusses various types of ore deposits and characteristics that determine their economic viability, such as grade, shape, depth, and stability. The document also lists topics that will be covered in each lecture, including ore mineralogy, the mining cycle, resource classification, mining methods, processing, waste management, and environmental issues. The series aims to give students a non-technical overview of the mining and mineral extraction process.
Forensic odontology case study
Ted Bundy was an American serial killer who confessed to killing numerous young women between 1974 and 1978. He would bludgeon and strangle his victims, and also engaged in rape and necrophilia. In 1978, Bundy was suspected of killing two young women, Lisa Levy and Martha Bowman. Investigators found an odd bite mark on Lisa Levy's buttock. A dental impression was taken of Bundy's teeth without his consent and compared to photographs of the bite mark. A forensic dentist testified that the unique structure and alignment of Bundy's teeth matched the bite mark, providing crucial evidence that led to Bundy's conviction.
Gun shot residue
This document discusses gunshot residue (GSR) and its detection in forensic investigations. It defines GSR as chemical and particulate components released when a gun is fired. GSR can be found on hands, skin, clothing, and nearby surfaces. Various techniques are described for collecting and detecting GSR, including dry collection methods using wax or tape lifts, wet collection using swabs or solvent washes, and analytical detection using microscopy, X-ray fluorescence, chemical tests for nitrates, lead and barium. The composition of GSR depends on factors like the gun's propellant and projectile materials. Detection of GSR can help answer questions in shooting investigations like whether a suspect fired a gun or if a wound was caused by
Development of Latent Fingerprints
This presentation is about the analysis and relevance of Latent Fingerprints found majorly in all major types of crime scenes
Andesite
Andesite is an extrusive igneous rock of intermediate composition typically dominated by plagioclase feldspar with pyroxene and/or hornblende. It forms from the mixing of basaltic and crustal magmas in continental margins above subduction zones. Andesites are the most abundant volcanic rocks in island arcs, occurring in belts above Benioff zones. They have been used historically as ornamental stone for buildings.
Geochemical cycle and mobility of elements
The document discusses geochemical concepts relevant to mineral exploration, including the geochemical environment, cycle, dispersion, and mobility of elements. It describes the deep-seated and surfacial environments and how materials move between them in the geochemical cycle. Mobility depends on factors like viscosity and particle size. Hypogene mobility occurs under high pressure-temperature conditions, while supergene mobility is influenced by siliceous or sulfide environments at the surface. Indicator and pathfinder elements are discussed for detecting targeted ore deposits.
What's hot (20)
Nuclear waste disposal and its geological importance
Nuclear waste disposal and its geological importance
Viewers also liked
Helium (David Tucker)
Helium is a colorless, odorless noble gas that was discovered in 1895. It is nonflammable and less dense than air, so it is often used in balloons and blimps. Helium exists as a trace element in the atmosphere but is primarily found trapped within rocks and minerals in the earth's crust. It is obtained commercially as a byproduct of natural gas extraction. Helium has no known compounds and is inert, making it useful for applications like welding, breathing mixtures, and cryogenics where non-reactivity is important.
Ruthenium (Brittany Lewin)
Ruthenium is a rare hard white metal that was discovered in 1827 in Russia. It has a high melting point of 2,250°C and boiling point of 4,150°C. Ruthenium is used in the electronic and chemical industries and for making wear-resistant electrical contacts, jet engine blades, and fountain pens. It is one of the rarest metals on Earth and is found in North and South America and South Africa.
Manganese (Colleen McKiernan)
Manganese is a gray-white metal that occurs naturally as compounds in minerals. It was discovered in 1774 by Johan Gottlieb Gahn when he heated the mineral pyrolusite. Manganese is the 12th most abundant element in the Earth's crust and is essential in steel production. It is commonly obtained by heating manganese dioxide with carbon or aluminum. Major uses include steel production, glass decolorization, and manganese oxide in batteries and pigments.
Helium (Natasha Lashley)
Helium was discovered in 1868 when acid was added to uranium material, producing an unreactive gas. It is a colorless, odorless noble gas that is the second lightest element. Over 99.999% of naturally occurring helium is the stable isotope helium-4. Helium is obtained by cooling and liquefying natural gas deposits and letting helium separate out as the only remaining gas. Its main uses are in balloons, airships, pressurizing rockets, and cooling superconducting magnets.
Germanium (Brandy Ashcraft)
Germanium was first proposed in 1871 and discovered in 1886 by German chemist Clemens Winkler. It is a brittle metalloid that is a semiconductor. It is used in electronics, fiber optics, and infrared optics due to its conductivity and transparency to infrared radiation. The largest use is in the semiconductor industry for making transistors.
Technetium (Zach Ewing)
Technetium is an artificial radioactive metal that was the first element synthesized. It was discovered in 1937 by Emilio Segre and Carlo Perrier in Italy. Technetium has properties such as a melting point of 2,200°C, boiling point of 4,877°C, and silver color. It is not commonly found on Earth but is found in some red giant stars. Technetium is mostly created in nuclear reactors and is used as a tracer in medicine and to inhibit corrosion in steel.
Iodine (Matthew Lundberg)
Iodine is a purple-colored element that was discovered in 1811 by Bernard Courtois during the production of saltpeter for gunpowder. It exists as a solid at room temperature and as a gas above its boiling point of 457.5 K. Iodine is obtained commercially through mining in Chile and extraction from brine sources in oil fields in the US and Japan. It is an essential nutrient for the human body but must be consumed in small amounts. Iodine has a variety of uses including in x-ray contrast media, as a disinfectant, and in the production of dyes and pharmaceuticals.
Cobalt (Maggie Powell)
George Brandt discovered cobalt in 1735 in Stockholm, Sweden. Cobalt derives its name from the German word for goblin. It is a hard, brittle, silver-white transition metal that is commonly found in minerals like cobaltite and erythrite. Cobalt is used to make pigments, magnets, batteries, alloys, and as a component of vitamin B12. Exposure to high amounts can cause health effects like lung problems and heart issues.
Zirconium (Haley Post)
Zirconium is a transition metal that was discovered in 1789 within the mineral zircon. It has several stable and one radioactive isotope. While difficult to isolate pure zirconium due to its chemical similarity to hafnium, the Kroll process is commonly used. Zirconium has many applications including use in nuclear reactors due to its resistance to neutron absorption, as an alloy for steel, and in gemstones like cubic zirconia.
Rubidium (Howard Wood)
Rubidium is a soft, silvery-white metal that was discovered in 1861 by spectroscopic analysis. It ignites spontaneously in water and has a melting point of 312.2K and boiling point of 961K. The most abundant isotope is Rubidium-85. Rubidium is the 23rd most abundant element in the Earth's crust and is found in minerals such as lepidolite. Common compounds include rubidium chloride, hydroxide, and carbonate. Uses include research on batteries and optical glasses, though applications are limited outside research settings.
Beryllium (Tara Lay)
Beryllium is a lightweight gray metal that occurs naturally as a component of various minerals. It was first discovered in 1798 by a French chemist who found it present in emeralds and beryl. Beryllium has a high melting point and is used in applications requiring rigidity, stiffness, and heat resistance, such as spacecraft, aircraft, and electronics. It is toxic if inhaled and exposure carries health risks like chronic beryllium disease.
Selenium (Matthew Calme)
Selenium is a non-metallic element discovered in 1817 by Swedish scientist Jöns Jacob Berzelius. It has various industrial uses including in photocopiers, solar cells, and cameras due to its ability to conduct electricity when exposed to light. Selenium is rarely found in nature but can be extracted from copper sulfide and ranks 31st in abundance among elements. It has a melting point of 493.65 K and is also used in dandruff shampoos and is an essential nutrient found in foods like Brazil nuts, fish, and whole grains.
Titanium (Trent Sloan)
Reverend William Gregor discovered titanium in 1791 in Cornish beach sands in Germany, but did not name it. A few years later, Klaproth named it titanium after the Titans of Greek mythology. Titanium is the 6th most abundant element on Earth and is found bound to igneous rocks and their derived sediments. It is difficult and costly to extract from rocks. Titanium is used as an alternative to steel in applications where strength and light weight are important, such as in aircraft, spacecraft, and armored vehicles.
Rhodium (Megan Wogan)
Rhodium is a shiny silver-colored metal that was discovered in England in 1803. It has a high melting point of 1966°C and boiling point of 3727°C. Rhodium is very dense, with a density of 12.4 g/cm3, higher than water and steel. It is commonly found with nickel and copper in South America and Canada. Rhodium is primarily used for plating jewelry and coins and alloying with platinum and palladium for hardness.
Potassium (Megan Fish)
Potassium is a soft silver metal that was first isolated in 1807 by Sir Humphrey Davy through electrolysis. It makes up 2.4% of the Earth's crust and is found in rocks, minerals, lakes, and seas. Potassium oxidizes quickly in air and is highly reactive, catching fire when exposed to water. It has important industrial uses like in fertilizers and drain cleaners when combined with other elements. Potassium is also essential for human bodily functions and our bodies contain over 100g of it.
Radium (Evan Clark)
Radium was discovered in 1898 by Marie Curie in the mineral pitchblende. It is a silvery-white radioactive metal with an atomic number of 88 that occurs naturally in uranium ores. Radium decays into other radioactive elements, emitting alpha, beta, and gamma radiation that can be dangerous to human health if exposed in sufficient amounts. It was historically used to paint watch and clock faces but is no longer used for that purpose due to its radioactivity. Today, radium is used to treat cancer through brachytherapy procedures.
Iridium (Kelsey Taylor)
Iridium is a transition metal with the symbol Ir and atomic number of 77. It was discovered in 1803 by Smithson Tennant in the residue left after dissolving platinum in acids. Iridium is a solid at room temperature, has the highest melting point of any metal, and is mainly used as a hardening agent in platinum alloys and for equipment requiring high heat resistance. It is found naturally with platinum and osmium and recovered as a byproduct of nickel mining.
Strontium (Keri Nickoson)
Strontium was discovered in 1790 in Scotland and later isolated. It is a solid metal with a silvery color that can change colors during reactions. Strontium is commonly used in fireworks due to its ability to change flame colors and is also found in nuclear bombs and gemstones. While strontium does not exist alone naturally, its salts and compounds have various commercial and industrial uses.
Viewers also liked (20)
Similar to Cadmium (Rebekka Meeks)
Cadmium (Jeremy Willett)
Cadmium is a soft, bluish-white metal that was first discovered in 1817 by German chemist Friedrich Strohmeyer while studying calamine. It has several important industrial uses including in nickel-cadmium batteries, as an anti-corrosive coating for steel, and in semiconductors. However, cadmium is also toxic to humans and accumulates primarily in the kidneys, where high levels can lead to kidney failure. While cadmium intake has decreased in recent decades, it remains a concern due to negative health effects. Cadmium is obtained as a byproduct during production of other metals like zinc, copper and lead.
CADMIUM.pptxTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILS
ETEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILSTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILSTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILSTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILSTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILSTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILS
Cadmium
Cadmium is a soft, bluish-white metal that is toxic and carcinogenic. It occurs naturally in zinc ores and is produced as a byproduct of zinc smelting. Cadmium is used in batteries, pigments, plastics, and other applications. Long-term exposure can cause kidney and lung damage and cancer in humans. The main sources of human exposure are burning fossil fuels, waste incineration, and contaminated food and water from industrial pollution.
Cuastic soda and Chlorine Industries
Lecture Slides by Prof. Imitaz Ali at Ghulam Ishaq Khan Institute for Engineering Sciences and Technology (GIKI).
Alloys for pfm crown &bridg /certified fixed orthodontic courses by Indian de...
Alloys for pfm crown &bridg /certified fixed orthodontic courses by Indian de...Indian dental academy
Welcome to Indian Dental Academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy has a unique training program & curriculum that provides students with exceptional clinical skills and enabling them to return to their office with high level confidence and start treating patients
State of the art comprehensive training-Faculty of world wide repute &Very affordable.Pocelains/ orthodontic straight wire technique
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Lead Extraction
This document discusses the extractive metallurgy process for lead. It describes lead properties, history of lead use, health effects, lead ores and locations, ore dressing, size reduction, roasting, smelting, refining including the Parkes and Betts processes, and lead products and byproducts. The overall process involves extracting lead from its ore, reducing and refining it to remove impurities and produce a high purity lead product.
Chromium (Jeff Jansen)
Chromium is a silvery metallic element with an atomic number of 24. It was discovered in 1797 by Louis-Nicholas Vauquelin and is commonly found in chromite ore. Some key uses of chromium include chrome plating, production of paints and pigments, and hardening steel. It has a high melting point and is used in applications like armor plating, ball bearings, and cutting tools.
manufactured substance in industry
The document discusses several manufactured substances used in industry. It focuses on alloys, synthetic polymers, glass, and composite materials. For each category, it provides examples of specific materials, their compositions, properties, and common uses. Alloys discussed include bronze, brass, steel, stainless steel, and pewter. Synthetic polymers mentioned are polythene, polypropene, polyvinyl chloride, perspex, terylene, and nylon. The document also examines different types of glass and their characteristics.
Alloys for pfm /cosmetic dentistry training
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
Silver recovery method converted
silver and bromide we are using in film , but silver is very expanse so we will recovered silver from exposed film
Pocelains/ orthodontic straight wire technique
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Alloys for pfm/ oral surgery courses
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Pocelains/ dental crown & bridge courses
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Diamond & Graphite
Diamond and graphite are two allotropes of carbon that differ significantly in their physical properties. Diamonds form under high temperature and pressure deep in the Earth's mantle, while graphite forms through the metamorphism of carbonaceous sediments. Despite being made of the same element, diamond is transparent, extremely hard, and thermally conductive, while graphite is black, soft, and electrically conductive. Both have important industrial applications, with diamond used in cutting and optics and graphite used in pencils, lubricants, and batteries.
HEAVY METAL.pptx
Heavy metals like lead, mercury, cadmium and arsenic are toxic to human health. They are produced by industrial activities and deposited in water and soil. Heavy metals occur near the bottom of the periodic table, have high densities, are toxic and non-degradable. They can be transported through water, food, air or adsorption onto materials. Common health effects include skin burns, kidney damage, vision problems, brain damage and death. Sources include pesticides, mining, coal combustion, wood preservatives and tobacco smoke. Methods to determine heavy metal concentration include atomic absorption spectrophotometry and X-ray fluorescence. Control methods involve vacuuming, replacing wood-burning appliances, removing old paints and
Gold: The Most Precious of Metals - FocusEconomics
In this presention we discuss why gold is so unique by explaining how it is mined and processed and discuss how its unique physical properties make it one of the most useful metals. Finally, we end the post with a section on gold's importance to the global economy, the factors that set it apart from all other commodities, and how it can be classed as both a commodity and a monetary asset. Read the original blog post here: http://goo.gl/p2dFUs
2012 tus lecture 5
This lecture discusses different types of solar cells. Generation I solar cells include single crystal and polycrystalline silicon cells which are the most common currently but are expensive. Generation II cells include thin film technologies like amorphous silicon, cadmium telluride, and copper indium diselenide which offer lower costs but have lower efficiencies. Generation III cells aim for higher efficiencies and include multi-junction concentrator cells using exotic materials, dye-sensitized solar cells, organic cells, and nanostructured cells. The lecture discusses the materials, structures, and production processes for different cell types.
Vanadium
vanadium is metal well appreciated in the industries,
in this presentation, we discuss the priorities, application pros and cons of vanadium
Extraction adrian
The document discusses the extraction of raw materials used in electronics. Over 1,000 materials are mined from locations around the world, with some posing health and environmental risks. Specific materials identified as potentially harmful include barium, beryllium, cadmium, copper, gold, hexavalent chromium, lead, mercury, nickel, tin, and zinc. Extraction methods can endanger worker health and safety, and pollution from mining has contaminated water sources and ecosystems. In some areas, conflict has arisen over control of mines extracting metals used in electronics.
Similar to Cadmium (Rebekka Meeks) (20)
CADMIUM.pptxTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILS
CADMIUM.pptxTEXTBOOK ON PHYSICAL CHEMISTRY AND MINERALOGY OF SOILS
Alloys for pfm crown &bridg /certified fixed orthodontic courses by Indian de...
Alloys for pfm crown &bridg /certified fixed orthodontic courses by Indian de...
Gold: The Most Precious of Metals - FocusEconomics
Gold: The Most Precious of Metals - FocusEconomics
More from kwalters00
Selenium (Chad Beneker)
Selenium is a chemical element discovered in 1817 by Jons Berzelius in Sweden. It is commonly found in sedimentary rock and often accompanies sulfide minerals or silver, copper, lead, and nickel minerals. Selenium has various properties depending on its form - it is red in powder or crystalline form and gray in its metallic form. It has several industrial and medical uses, including in solar cells, catalysts, and producing medical radioisotopes. Dietary sources of selenium include Brazil nuts, fish, meat, eggs, brewer's yeast, and various seeds.
Aluminum (Brittany Jones)
This document summarizes the element aluminum. It discusses the history and discovery of aluminum, its properties including its atomic number, melting point, and common uses. Aluminum is the third most abundant element in the Earth's crust, found in minerals like bauxite, and is extracted through electrolysis. Its many applications include use in foil, cans, car parts, and electronics due to its light weight and resistance to corrosion.
Silicon (Samantha Brossart)
Silicon is the second most abundant element in the Earth's crust. It was discovered in 1824 by Swedish chemist Jons Jacob Berzelius and gets its name from the Latin word for flint. At room temperature, silicon exists in both amorphous and crystalline forms, with the crystalline form having a metallic luster and grayish color. In addition to being a component of sand and quartz, silicon has many important uses including in soaps, adhesives, lubricants, polishing agents, electrical insulators, and medical implants.
Boron (Briana Shandel)
Boron was discovered in France in the early 1800s. It exists in minerals like borax, kernite, and colemanite that are mined in countries like Turkey, Russia, and the US. Boron has many industrial uses including borax for fiberglass, boron carbide for armor, and boron nitride for high temperature equipment. It is a poor conductor but becomes conductive at high temperatures.
Arsenic (Michael Schmidt)
Arsenic is a solid metalloid that occurs naturally in the earth's crust. It has been known since ancient times but was identified as an element in 1250 AD. There are three forms of arsenic - gray metallic, yellow, and black. Arsenic is obtained through heating its ores to convert it to oxides, then reacting with carbon. It is used in compounds for pesticides, treated wood, and semiconductors, though in its pure form it is toxic and was historically used as a poison.
Technetium (Tayler Carter)
Technetium was discovered in 1937 by Italian scientists, though it had been mistakenly reported as discovered earlier. It is a man-made radioactive element produced by bombarding molybdenum with neutrons. Technetium has no stable isotopes and is used as a radioactive tracer in medical diagnostic tests due to its low cost.
Radon (Fred Wolnitzek)
Radon is a colorless, odorless, radioactive gas that is formed from the decay of radium. It is the most dense gas known and has a half-life of 3.8 days. Radon is found anywhere there are radium deposits in the ground and can accumulate in buildings, posing a lung cancer risk to those inside. It was first discovered in 1900 and was responsible for many miner deaths in centuries past before its radioactive properties were understood, originally blamed on mythical dwarves. Up to 22,000 lung cancer deaths occur annually in the US due to radon exposure.
Niobium (Don Willmoth)
Niobium is a shiny grey metal that was first discovered in 1801. It was initially confused with tantalum but was proven to be a separate element in 1844. Niobium is mined primarily from the mineral pyrochlore and is used to strengthen steel and superconducting magnets. Its main applications are in jet engines, MRI machines, eyeglasses, and jewelry due to its hypoallergenic properties. Though not a household name, niobium plays an important but often unseen role in industries like aerospace, medical, and science.
Lithium (Michael Krutzkamp)
Lithium is a soft, silvery-white metal that is the lightest solid element. It was discovered in 1817 by Johan Arfvedson in Sweden and derives its name from the Greek word "lithos" meaning stone. Lithium has various applications including use in rechargeable lithium-ion batteries, as a mood-stabilizing drug, and as a coolant in nuclear reactors.
Uranium (Zack Bolog)
Uranium is a silvery-gray radioactive metal that was discovered in 1789. It has major isotopes of U-235 and U-238 and is commonly found in deposits in Australia, Kazakhstan, and Canada. Uranium's main uses are as fuel for nuclear reactors and in nuclear weapons due to its radioactive properties during fission.
Argon (Chelsea Colon)
This document provides information about an invisible, odorless gas that is found in the atmosphere. It was first identified in Scotland by Lord Rayleigh and Sir William Ramsay. It is a noble gas with a boiling point of 87.30K and melting point of 83.80K. Its main uses are in light bulbs and medical lasers. The gas is argon, with the symbol Ar and part of the noble gases in group 18 of the periodic table.
Chlorine (Samuel Boateng)
Chlorine is a greenish-yellow gas that was first isolated in 1774 by Swedish chemist Carl Scheele. It is one of the most abundant elements and is found in compounds like sodium chloride. Sir Humphrey Davy named chlorine in 1810. Chlorine has many uses including water treatment, bleaching, and producing chemicals like hydrochloric acid, plastics, and pharmaceuticals. It is highly reactive and poisonous in its pure gas form.
Neon (Hayley Wayne)
Neon is a colorless, odorless noble gas with an atomic number of 10. It was discovered in 1898 by William Ramsay and Morris Travers. Some key facts about neon are that it is used widely in neon signs and lights, it exists in small percentages in the universe, sun, and Earth's crust, and it has three stable isotopes.
Zinc (Zak Konys)
Zinc is a bluish-white metal that is found naturally in the Earth's crust. It was likely first discovered and purified in ancient China around 1000 AD, and was later described as a metal by the Swiss alchemist Paracelsus in the 15th century. Zinc is commonly used today to galvanize other metals and prevent corrosion, as well as in the production of many compounds for applications like rubber, paint pigment, animal feed supplements, and more. The largest producers of zinc today are China, Australia, Peru, the United States, and Canada.
Cobalt (Samantha Johnson)
Georg Brandt discovered cobalt in 1739 while attempting to prove that the blue color in glass came from an unknown element, not bismuth as previously thought. Cobalt is a hard, silvery-gray metal that is resistant to corrosion and oxygen. It has many uses including in superalloys for jet engines, magnets, batteries, colorants like blue glass, and medical radiation therapy using radioactive cobalt-60. The Democratic Republic of Congo is the leading producer of cobalt today.
Calcium (Rebecca Barnes)
Sir Humphry Davy discovered calcium in 1808 by electrolyzing lime and mercuric oxide. Calcium is the fifth most abundant element in the Earth's crust and is essential for animal skeletons and plant growth. It has an atomic number of 20, melting point of 839 degrees Celsius, and is commonly found in limestone, eggshells, and mollusk shells.
Bromine (Amber Boyers)
Bromine is a reddish-brown liquid element that was discovered in 1826 by Antoine Balard. It has a distinct foul odor due to its Greek name meaning "stench." Bromine is the only nonmetallic element liquid at room temperature and can be found in salt springs, salt deposits, and the earth's crust. It has various industrial and medical uses such as in swimming pools, pesticides, batteries, and some medications.
Sodium (Katie Carrico)
This document provides information about the element sodium. It discusses that sodium is a soft, silvery-white metal that is highly reactive. It notes that sodium is the sixth most abundant element on Earth and is found in compounds like salt. The document outlines the uses of sodium, including in making soap, glass, and sodium vapor lamps. It also discusses sodium isotopes and their use in medicine and testing oil pipelines.
Iron (Sarah Henson)
Iron has been used by ancient civilizations for thousands of years. Beads made of meteoric iron dating back to 3,500 BC have been found in Egypt, and cast iron was produced in China as early as 550 BC. Iron is abundant on Earth and is found in the core as well as in minerals like hematite and magnetite that are mined for iron production. Iron has many important industrial and biological uses due to its magnetic and structural properties.
More from kwalters00 (19)
Recently uploaded
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdThe History of Stoke Newington Street Names
Presented at the Stoke Newington Literary Festival on 9th June 2024
www.StokeNewingtonHistory.com
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...Nguyen Thanh Tu Collection
https://app.box.com/s/tacvl9ekroe9hqupdnjruiypvm9rdanePengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
How to deliver Powerpoint Presentations.pptx
"How to make and deliver dynamic presentations by making it more interactive to captivate your audience attention"
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)Academy of Science of South Africa
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...Nguyen Thanh Tu Collection
https://app.box.com/s/qhtvq32h4ybf9t49ku85x0n3xl4jhr15The Diamonds of 2023-2024 in the IGRA collection
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Wound healing PPT
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...
Librarians are leading the way in creating future-ready citizens – now we need to update our spaces to match. In this session, attendees will get inspiration for transforming their library spaces. You’ll learn how to survey students and patrons, create a focus group, and use design thinking to brainstorm ideas for your space. We’ll discuss budget friendly ways to change your space as well as how to find funding. No matter where you’re at, you’ll find ideas for reimagining your space in this session.
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience Wahiba Chair Training & Consulting
Wahiba Chair's Talk at the 2024 Learning Ideas Conference. Recently uploaded (20)
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptx
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience
Cadmium (Rebekka Meeks)
- 2. History of Cadmium • Discovered in 1817 by German chemist and professor Friedrich Stromeyer at Göttingen University while studying samples of calamine (zinc carbonate). • Noticed that calamine gave off a yellow color when heated. • Later found traces of a new element in heated samples of calamine: Cadmium. • Name comes from Latin word cadmia and Greek word kadmeia: ancient names for calamine. Friedrich Stromeyer
- 3. Properties of • Poisonous transitional metal • State at Room Temperature: Solid • Color: Silver • Melting Point: 594.22 K (321.07°C) • Boiling Point: 1040 K (767°C) • Density: 8.69 g/cm3 • Oxidation State: +2 • Electron Shell Configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2
- 4. Properties of • Known Isotopes: 44 • Known Natural Stable Isotopes: 5 – 108: 0.89% natural abundance – 110: 12.49% natural abundance – 111: 12.80% natural abundance – 112: 24.13% natural abundance – 114: 28.73% natural abundance • Known Natural Radioactive Isotopes: 3 – 106: half-life ≥ 2.6×10+17 years, 1.25% natural abundance – 113: half-life 7.7×10+15 years, 12.22% natural abundance – 116: half-life > 1.2×10+21 years, 7.49% natural abundance
- 5. Availability of • The only mineral that contains significant amounts of cadmium is greenockite (CdS), which is not very common. • Most cadmium produced today is obtained from the small amounts that are found in zinc ores and as a byproduct of mining zinc. • Cadmium is relatively inexpensive and easy to obtain. A 99.9% pure cadmium rod weighing half a pound is only $15 greenockite online. • 99.999% pure cadmium is $70 per 1.5” bar. 99.999% pure
- 6. Uses of • 70% of mined cadmium is used in rechargeable nickel-cadmium batteries. • Formerly electroplated to protect materials from corrosion. • Cadmium alloy used in fire sprinklers as a plug. • Because of low cost, (controversially) used in inexpensive jewelry, especially children’s jewelry. • Alloyed with silver to make solders. • Used to make control rods for nuclear reactors, because it easily absorbs neutrons. children’s jewelry
- 7. Uses of CADMIUM • Cadmium telluride is used for less expensive solar panels. • Hydrated cadmium sulfate is used in Weston cells, which are used to calibrate medical and laboratory equipment. • Cadmium sulfide is a yellow pigment used in paint. • Cadmium compounds are found in phosphors of black and white TVs and the blue and green phosphors of colored TVs.
- 8. • Cadmium is highly toxic. • Toxic when ingested or inhaled, but cannot be absorbed by the skin.
- 9. Exposure to • Most exposure occurs from cigarette smoke and coal burning. • Car engine exhaust contains cadmium. • May be found in groundwater contaminated by landfills, phosphate fertilizers, or crops grown with contaminated water or fertilizer. • Cadmium is used as a heat stabilizer in PVC pipes and PVC coating material. • Tobacco leaves naturally accumulate large amounts of cadmium: one cigarette is estimated to have 1-3μg of cadmium. About 10% is inhaled into a smoker’s lungs during active smoking. smoking
- 10. Sources • http://www.sciencephoto.com/media/228534/enlarge • http://education.jlab.org/itselemental/ele048.html • http://www.chemistryexplained.com/elements/A-C/Cadmium.html • http://chemistry.about.com/od/elementfacts/ig/Atom-Diagrams/Cadmium-Atom.htm • http://www.online- shop.hk/index.php?main_page=product_info&cPath=9_29&products_id=2043&zenid=a3f37640ee dad9afa6be41090effed21 • http://www.glitterforall.com/?p=2445 • http://www.blcleathertech.com/testing-services/cadmium-testing.htm • http://www.museumwales.ac.uk/en/800/?mineral=260 • http://www.cartoonstock.com/directory/c/cadmium.asp • http://www.cleveland.com/world/index.ssf/2010/01/chinese_kids_jewelry_makers_sa.html • http://edwindwianto.wordpress.com/page/33/ • http://solar-energy-news-and-views.blogspot.com/2011_04_01_archive.html • http://www.clickgreen.org.uk/news/national-news/12823-new-nuclear-power-could-supply-every- home-in-the-uk.html • http://www.rotometals.com/PhotoGallery.asp?ProductCode=CADMIUM%5FSTICKS • http://www.caslab.com/News/cadmium-testing.html • http://www.cafepress.com.au/russellkightley.266156458 • http://www.non-toxickids.net/2010/01/more-news-about-toxic-cadmium-jewelry.html • http://www.everydayexposures.com/toxins/toxic-metals/cadmium • http://periodictable.com/Elements/048/index.html