水俣病と水銀
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Mercury exists in metallic, inorganic, and organic forms. Metallic mercury is used in thermometers and fluorescent lamps and can cause pollution when used for gold mining. Organic mercury, specifically methyl mercury, forms from inorganic mercury in nature and accumulates up the food chain in fish and shellfish. Certain large predatory fish like swordfish and tuna can contain high levels of mercury due to its accumulation in the food chain. Mercury is distributed throughout the body with higher concentrations in the liver and kidneys. It is slowly excreted from the body over time through urine and stool.
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Mercury pollution comes from both natural sources like volcanoes as well as human sources. Methyl mercury, a toxic form of mercury, builds up in fish and marine animals through bioaccumulation in the food chain. Certain large predatory fish like tuna and swordfish tend to have the highest levels of mercury. While occasional fish consumption does not lead to high mercury levels for most people, methyl mercury can remain in the body for an extended period of time if regularly consumed.
Mercury
Mercury exists in several forms including metallic, inorganic, and organic. Metallic mercury is used in thermometers and fluorescent lamps and causes environmental pollution when used in gold mining. Inorganic mercury is used to make organic mercury through microorganisms in nature, accumulating in fish and shellfish up the food chain. Mercury pollution involves the absorption and long-term storage of mercury, especially methyl mercury, in organs like the liver and brain over many months. High levels of mercury are found in large predatory fish and whales due to biomagnification through the marine food chain.
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This document discusses copper and nitrogen. It notes that the average human body contains about a tenth of a gram of copper, which helps produce enzymes and catalysts for important bodily functions. It recommends daily copper intake amounts for adults. The document also explains that nitrogen is essential for amino acids and nucleic acids, but must be "fixed" to be used. Nitrogen is part of proteins that are important components of muscles, skin, blood, hair, nails and DNA.
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Mercury pollution comes from volcanoes and microorganisms converting mercury into methylmercury, which accumulates in fish and marine animals through the food chain. Certain fish like swordfish, tuna, and large predatory fish contain high levels of methylmercury. While occasional consumption of fish is not harmful, frequent eating of fish with high mercury levels can lead to mercury building up in the body over time. Mercury is distributed to organs like the liver and kidneys after absorption and is slowly excreted over several months. Metallic mercury is used in products like thermometers and fluorescent lamps, while methylmercury forms through natural processes and bioaccumulates in the food chain.
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33 part 4-earthsoft-water - pollution-industrial issue
"Earthsoft Foundation of Guidance (EFG) is working as an NGO/NPO for students - Education & Career
guidance and for Professionals for soft skills enhancements. We are working speading , sharing
knowledge; experience globally.It has uploaded important presentations at http://myefg.in/downloads.aspx.
Also visit www.slideshare.net and search using key word - earthsoft
Read http://tl.gd/jm1gh5 and view picture http://twitpic.com/cept60
http://www.slideshare.net/rrakhecha/efg-activities-of-one-year27-mar2013
Be mentor using your education, knowledge & experience to contribute for a social cause & do conduct
free training/ workshop seeking help of existing platforms
Kindly spread to your friends.Thank you!
- Earthsoft Foundation of Guidance
Let us make earth little softer..
"
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"Earthsoft Foundation of Guidance (EFG) is working as an NGO/NPO for students - Education & Career
guidance and for Professionals for soft skills enhancements. We are working speading , sharing
knowledge; experience globally.It has uploaded important presentations at http://myefg.in/downloads.aspx.
Also visit www.slideshare.net and search using key word - earthsoft
Read http://tl.gd/jm1gh5 and view picture http://twitpic.com/cept60
http://www.slideshare.net/rrakhecha/efg-activities-of-one-year27-mar2013
Be mentor using your education, knowledge & experience to contribute for a social cause & do conduct
free training/ workshop seeking help of existing platforms
Kindly spread to your friends.Thank you!
- Earthsoft Foundation of Guidance
Let us make earth little softer..
"
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Darshit gajjar(Software eng)
This water pollution but I don't like environment .but I make ppt bacuase our sar punish me.so that all guys watch my ppt my ppt is best for other.i am software eng .so that I make my ppt of IT realeted so that watch my environment ppt
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Heavy metals and toxic compounds from industrial waste pollute nearby water bodies, harming aquatic life and disrupting food chains. Microbial pollutants from sewage cause infectious diseases in aquatic and terrestrial life. Excess nutrients from sewage and fertilizer runoff lead to algal blooms that deplete oxygen and suffocate fish. Atmospheric deposition and global warming raise water temperatures, damaging marine habitats. Case studies on bottled water in India found pesticide residues from contaminated groundwater sources, and oil spills from tanker accidents cause long-lasting damage by coating and killing wildlife.
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Dissolved oxygen (DO) refers to the level of oxygen present in water. It is typically measured in parts per million (ppm), milligrams per liter (mg/L), or percent saturation. There are two main methods for measuring DO - electrochemical and optical. Electrochemical methods use electrodes, a semipermeable membrane, and electrolyte, while optical methods use dyes that quench luminescence in proportion to oxygen levels. Factors like temperature, salinity, and barometric pressure can affect DO measurements and require compensation. Calibration techniques include Winkler titration, air-saturated water, and water-saturated air. Proper calibration ensures accurate DO readings.
Group 6 dissolved oxygen determination ppt
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Drinking Water
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Darshit gajjar(Software eng)
This water pollution but I don't like environment .but I make ppt bacuase our sar punish me.so that all guys watch my ppt my ppt is best for other.i am software eng .so that I make my ppt of IT realeted so that watch my environment ppt
Water pollution powerpoint
Water pollution occurs when contaminants are released into bodies of water, compromising water quality for other uses. Common causes include industrial waste, sewage, oil pollution, and nuclear waste from improper dumping and underground storage leaks. Effects of water pollution include toxic water that can sicken humans and animals, thermal heating of water sources, and hundreds of turtle deaths in Australian waters each year from oil coatings. Individuals can help prevent water pollution by conserving water use, proper fertilizer application, participating in clean ups, and raising awareness.
Water Resources
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Water resources are sources of water that are useful or potentially useful for various human uses. Virtually all human uses require fresh water, but only 3% of the water on Earth is fresh, and over two thirds of that is frozen in glaciers and ice caps. As the global population rises, water demand is exceeding supply in many areas, so there is increasing scarcity of accessible, clean fresh water. The major sources of fresh water are surface water, groundwater, and frozen water. Water is used for agricultural, industrial, household, and environmental purposes.
Water pollution ppt
Water pollution occurs when contaminants are released into water sources, degrading water quality for other uses. There are two main types of water pollution: surface water pollution which impacts oceans, rivers and lakes, and groundwater pollution which impacts underground sources. Water pollution can be caused by sewage, industrial waste, marine dumping, and other sources, and has negative effects on the environment, humans, and animals, including toxic water, diseases, and animal deaths. Individual actions like conserving water, proper fertilizer use, and cleanups can help reduce water pollution.
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Prepared for my college-Kanya Maha Vidyalaya,Jalandhar.
Mercury Toxic Metal Contamination
Mercury toxicity can cause a variety of symptoms and arises from both occupational and environmental exposures. Common sources of mercury exposure include amalgam dental fillings, certain types of fish high in mercury, and some dietary supplements. Healthcare providers can diagnose mercury toxicity through tests of blood, hair, serum, or urine samples. Treatment aims to eliminate exposure sources, increase excretion of heavy metals, and protect organs during detoxification which may involve removing amalgam fillings by a biological dentist.
Salt and Health
The document discusses the importance and abundance of salt in the world's oceans and how it has been used by humans. It covers the early formation of salt from volcanic activity, how salt is extracted from seawater and formed in salt lakes, and its various natural sources including seawater, salt lakes, wells, and salt mines. It also addresses the issues of pollution in oceans impacting salt sources and the health effects of processed salt versus natural sea salt.
Heavy metals
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The document discusses heavy metals, their sources, effects on human health and aquatic ecosystems, and ways to reduce exposure. It defines heavy metals, describes how they accumulate in organisms and biomagnify up the food chain, and explains their health impacts including effects on organs and links to conditions like cancer. Recommendations are provided to minimize exposure to heavy metals such as limiting certain fish and rice consumption, being aware of lead pipes, and stopping smoking.
Digital natives
This document defines key terms related to ecosystems and photosynthesis. It explains that spotted salamanders and pea aphids can perform photosynthesis like plants due to symbiotic relationships with algae. Living things in an ecosystem range from microscopic organisms to plants and animals, all interacting and dependent on both living and nonliving components. Photosynthesis plays an important role in the oxygen and mineral cycling within ecosystems. The environment supports all life and is influenced by human behavior.
MECURY PowerPoint Presentation .pptx
Mercury is a highly toxic liquid metal that exists in three main forms: metallic mercury, inorganic mercury, and organic mercury. It can cause serious health problems when ingested or inhaled. Environmental sources of mercury include volcanic activity, industrial emissions, fossil fuel combustion, waste disposal, and artisanal gold mining. Health effects of mercury exposure include neurological damage, developmental delays, kidney damage, cardiovascular problems, respiratory problems, and other issues.
Water quality parameters
This document discusses the important physical, chemical, and biological properties for successful fish pond culture. It covers factors like temperature, depth, turbidity, light, dissolved oxygen, pH, carbon dioxide, hardness, alkalinity, ammonia, phosphorus, and dissolved solids. Maintaining optimal ranges for these various properties can ensure high fish productivity, prevent disease outbreaks, and support healthy aquatic ecosystems in the pond. The document emphasizes how closely managing water quality, food production, and fish health are interlinked for sustainable aquaculture.
Saudi Electronic University Bioaccumulate Metals in Living Organisms Paper.docx
Heavy metals can accumulate up the food chain through bioaccumulation. Small organisms at the bottom of the food chain absorb metals from polluted environments. Larger organisms ingest these contaminated small organisms and the metals concentrate in their bodies. The highest levels of heavy metals are found in organisms at the top of the food chain, such as humans, as the metals magnify in concentration with each trophic level. Heavy metal accumulation can harm organisms and disrupt ecosystems over time if levels become too high.
Mercury poisoning.pptx
This document discusses mercury poisoning. It describes mercury as a heavy metal that exists in elemental, inorganic, and organic forms in the environment. Elemental mercury is liquid at room temperature and used in some products, while organic mercury is very toxic and can accumulate in aquatic animals. Exposure to mercury occurs mainly through fish consumption, occupational exposures like dentistry, and accidental exposures. Mercury poisoning can cause damage to the brain, kidneys, and nervous system. The most toxic form is organic mercury, which readily crosses the placenta and targets enzymes.
Marine Nutrients and Salts
This document discusses various nutrients that are important for marine life. It begins by defining nutrients as chemicals needed for life and growth that must be obtained from the environment. It then discusses the three main nutrients utilized by ocean plants - nitrate, phosphate, and silicate. These nutrients are essential but present in very low quantities and can limit primary productivity. The document provides details on the sources and roles of various nutrients like phosphorus, nitrogen, silicate, and others in marine ecosystems and the life cycles by which they are cycled through the environment and organisms.
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Cell Therapy Expansion and Challenges in Autoimmune Disease
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In addition to infrastructure and capacity constraints, CAR-Ts face a very different risk-benefit dynamic in autoimmune compared to oncology, highlighting the need for tolerable therapies with low adverse event risk. CAR-NK and Treg-based therapies are also being developed in certain autoimmune disorders and may demonstrate favorable safety profiles. Several novel non-cell therapies such as bispecific antibodies, nanobodies, and RNAi drugs, may also offer future alternative competitive solutions with variable value propositions.
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The Electrocardiogram - Physiologic Principles
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
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