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This document lists various pieces of lab equipment commonly used in chemistry experiments, including items for stirring and mixing solutions like stir rods, beakers, erlenmeyer flasks, and funnels; protective safety gear like safety goggles and glasses; measurement tools like graduated cylinders, pipets, and scales; and additional accessories such as test tubes, ring stands, mortar and pestles, and filter paper.
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Lab equipment
This document lists various pieces of equipment commonly used in a chemistry lab for AP Chemistry, including measurement devices like burets and graduated cylinders, containers like beakers and erlenmeyer flasks, supports and clamps, and other tools such as spatulas, stirring rods, and funnels.
Equipment
The document lists various pieces of scientific equipment used in a laboratory including beakers, Erlenmeyer flasks, stir rods, graduated cylinders, eye droppers, microscopes, Bunsen burners, weigh paper, rulers, wire mesh, test tubes, test tube holders, stoppers, balances, thermometers, rings and stands, funnels, pipettes, filter paper, scales, scalpels, forceps, dissecting pans, probes, dissecting scissors, and T-pins.
Equipment 2016
The document lists various pieces of scientific equipment commonly found in a laboratory including beakers, erlenmeyer flasks, stir rods, graduated cylinders, microscopes, bunsen burners, weigh papers, rulers, test tubes, funnels, pipettes, filter paper, scales, scissors, probes, forceps, dissecting trays, pins, and scalpels.
Introduction
M/S Glass Agencies is an Indian manufacturer and exporter of laboratory glassware, instruments, furniture and other products for laboratories, hospitals, and medical facilities. They produce a wide range of items including beakers, flasks, funnels, pipettes, microscopes, ovens, hot plates, centrifuges, hospital beds, wheelchairs, surgical instruments and more under their EROSE brand. The document provides an extensive list of the types of products they offer for chemistry, biology, physics, medical and other laboratories.
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This document lists common pieces of lab equipment used in chemistry experiments including Bunsen burners, beakers, flasks, test tubes, funnels, cylinders, rods, basins, condensers, and tools for measuring, heating, and handling chemicals such as burners, clamps, mortars, and pipettes.
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3) Radio waves, microwaves, infrared waves, visible light, ultraviolet light, and other types of electromagnetic waves are described along with their common uses such as broadcasting, communication, heating food, night vision, and more.
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Magnets have two poles, north and south, and exert magnetic forces on each other and other objects. Earth itself acts like a giant magnet, with its magnetic north pole located near its geographic south pole. Materials are magnetic if their atomic domains are aligned, allowing their magnetic fields to combine. There are different types of magnets including permanent and electromagnets. Earth's rotation creates electric currents in its liquid outer core, generating the planet's magnetic field.
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Lab equipment
This document lists various pieces of equipment commonly used in a chemistry lab for AP Chemistry, including measurement devices like burets and graduated cylinders, containers like beakers and erlenmeyer flasks, supports and clamps, and other tools such as spatulas, stirring rods, and funnels.
Equipment
The document lists various pieces of scientific equipment used in a laboratory including beakers, Erlenmeyer flasks, stir rods, graduated cylinders, eye droppers, microscopes, Bunsen burners, weigh paper, rulers, wire mesh, test tubes, test tube holders, stoppers, balances, thermometers, rings and stands, funnels, pipettes, filter paper, scales, scalpels, forceps, dissecting pans, probes, dissecting scissors, and T-pins.
Equipment 2016
The document lists various pieces of scientific equipment commonly found in a laboratory including beakers, erlenmeyer flasks, stir rods, graduated cylinders, microscopes, bunsen burners, weigh papers, rulers, test tubes, funnels, pipettes, filter paper, scales, scissors, probes, forceps, dissecting trays, pins, and scalpels.
Introduction
M/S Glass Agencies is an Indian manufacturer and exporter of laboratory glassware, instruments, furniture and other products for laboratories, hospitals, and medical facilities. They produce a wide range of items including beakers, flasks, funnels, pipettes, microscopes, ovens, hot plates, centrifuges, hospital beds, wheelchairs, surgical instruments and more under their EROSE brand. The document provides an extensive list of the types of products they offer for chemistry, biology, physics, medical and other laboratories.
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This document lists common pieces of lab equipment used in chemistry experiments including Bunsen burners, beakers, flasks, test tubes, funnels, cylinders, rods, basins, condensers, and tools for measuring, heating, and handling chemicals such as burners, clamps, mortars, and pipettes.
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1) The document discusses the electromagnetic spectrum, which is made up of different types of electromagnetic waves ranging from gamma rays to radio waves.
2) It explains that electromagnetic waves, including visible light, transfer energy and have different wavelengths and frequencies, though all travel at the same speed in a vacuum.
3) Radio waves, microwaves, infrared waves, visible light, ultraviolet light, and other types of electromagnetic waves are described along with their common uses such as broadcasting, communication, heating food, night vision, and more.
Interactive textbook ch 23 light and our world
Ray diagrams can be used to represent the path of light waves as they interact with mirrors and lenses. There are three types of mirrors: plane mirrors form reversed virtual images, concave mirrors can form real or virtual images depending on the object's position, and convex mirrors always form smaller virtual images. Concave lenses only form virtual images while convex lenses can form real or virtual images depending on the object's distance from the lens.
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Magnets have two poles, north and south, and exert magnetic forces on each other and other objects. Earth itself acts like a giant magnet, with its magnetic north pole located near its geographic south pole. Materials are magnetic if their atomic domains are aligned, allowing their magnetic fields to combine. There are different types of magnets including permanent and electromagnets. Earth's rotation creates electric currents in its liquid outer core, generating the planet's magnetic field.
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Interactive textbook ch. 15 sec 2 & 3 acids and bases
This document provides information about acids and bases. It discusses strong versus weak acids and bases, and how strength is determined by the number of ions formed when dissolved in water. A neutralization reaction occurs when acids and bases mix, forming water and salts. The pH scale is used to measure acidity and basicity, with values below 7 being acidic and above 7 being basic. Living things require a stable pH level in their environment to survive.
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A chemical reaction occurs when substances break apart or combine to form new substances with different chemical properties. A chemical equation represents a chemical reaction using chemical symbols and formulas, with reactants written before an arrow and products written after. It is important that chemical equations are balanced to obey the law of conservation of mass, which states the total mass is the same for reactants and products.
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2) The periodic table shows elements arranged in order of atomic number and classified as metals, nonmetals, and metalloids, with metals having properties like conductivity.
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1. The document discusses key properties of waves including amplitude, wavelength, frequency, and speed. It defines each property and explains how it relates to the energy carried by a wave.
2. Amplitude is the maximum distance of vibration from the rest position, and waves with larger amplitudes carry more energy since they require more energy to form. Wavelength is the distance between two identical points on waves, and waves with shorter wavelengths have more energy.
3. Frequency is the number of waves passing a point per unit time, measured in Hertz. Higher frequency waves have more energy than lower frequency ones. Wave speed depends on the medium and can be calculated using the equation that relates speed, wavelength, and frequency.
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Interactive Textbook Ch. 8 Sec 1
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2) Air resistance opposes the downward motion of falling objects and depends on factors like size and shape. Heavier, more compact objects like crumpled paper fall faster than flat, air-resistant objects like paper.
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1) Friction and induction are the two main causes of static electricity.
2) Static electricity builds up in clouds during thunderstorms as water droplets, ice, and air move within the storm cloud, transferring negative charges.
3) Lightning rods help protect buildings by providing a path for the electric charges from lightning to safely move to the ground through the rod's wire connection.
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This document provides information about acids and bases. It discusses strong versus weak acids and bases, and how strength is determined by the number of ions formed when dissolved in water. A neutralization reaction occurs when acids and bases mix, forming water and salts. The pH scale is used to measure acidity and basicity, with values below 7 being acidic and above 7 being basic. Living things require a stable pH level in their environment to survive.
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A chemical reaction occurs when substances break apart or combine to form new substances with different chemical properties. A chemical equation represents a chemical reaction using chemical symbols and formulas, with reactants written before an arrow and products written after. It is important that chemical equations are balanced to obey the law of conservation of mass, which states the total mass is the same for reactants and products.
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2) The periodic table shows elements arranged in order of atomic number and classified as metals, nonmetals, and metalloids, with metals having properties like conductivity.
3) The modern periodic table has rows called periods and columns called groups that show repeating trends in properties across and down the table.
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1) The atomic theory has changed over time as scientists gathered new evidence and information. John Dalton proposed the first scientific atomic theory in 1803, stating that all matter is made of atoms that cannot be created, destroyed, or divided.
2) In the late 19th century, scientists like J.J. Thomson discovered smaller particles called electrons within atoms. Thomson proposed the "plum pudding" model where electrons were scattered throughout the atom.
3) Ernest Rutherford's gold foil experiment in 1909 showed that atoms have a small, dense nucleus at their center. This led to Rutherford's nuclear model of the atom. Niels Bohr later incorporated electron orbits into this model.
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Thermal energy is the total kinetic energy of particles that make up a substance. Heat is the transfer of thermal energy between objects at different temperatures - it always flows from warmer objects to cooler ones. Thermal energy can be transferred through three processes: conduction (direct contact), convection (transfer of heat by a moving fluid like air or water), and radiation (transfer of heat through electromagnetic waves). Good conductors allow easy transfer of thermal energy through conduction, while insulators inhibit such transfer.
Interactive textbook ch. 9 energy and energy resources
The document summarizes energy conversions. It provides examples of potential energy converting to kinetic energy, such as a skateboarder gaining kinetic energy when going down a half-pipe after gaining potential energy going up. Another example is a stretched rubber band, where elastic potential energy converts to kinetic energy of motion when released. Chemical energy from food is also converted by the body into other usable energy forms.
Interactive textbook ch. 5 matter in motion
Forces have both direction and size. A net force is determined by adding all forces acting on an object. A balanced net force of 0 N means the object will not change its motion, while an unbalanced net force not equal to 0 N will cause a change in the object's motion. Examples given include a chair with balanced forces so it does not move, and a soccer ball kicked with an unbalanced force that changes its motion.
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This document provides an overview of elements, compounds, and mixtures. It begins by defining an element as a pure substance that cannot be separated into simpler substances. Elements are classified as metals, nonmetals, or metalloids based on their physical properties. Compounds are then defined as pure substances composed of two or more elements chemically bonded together in specific ratios. Compounds have unique physical and chemical properties that differ from their component elements. The document concludes by explaining that mixtures are physical combinations of elements or compounds that maintain their individual identities and can typically be separated.
Interactive textbook ch. 4 elements, compounds & mixtures
This document provides an overview of elements, compounds, and mixtures. It begins by defining an element as a pure substance that cannot be separated into simpler substances. Elements are classified as metals, nonmetals, or metalloids based on their physical properties. Compounds are then defined as pure substances composed of two or more elements chemically bonded together in specific ratios. Compounds have unique physical and chemical properties that differ from their component elements. The document concludes by explaining that mixtures are physical combinations of elements or compounds that maintain their individual identities and can typically be separated.
Interactive textbook ch. 2 & 3 the properties & states of matter
Density is a physical property that describes how mass and volume are related in an object. It is calculated by dividing an object's mass by its volume. Knowing an object's density can help identify it, as different substances have different characteristic densities. For example, a golf ball has a higher density than a ping pong ball of similar size because it contains more mass in the same volume. Density is measured in units of mass per unit volume, such as grams per cubic centimeter.
Interactive textbook ch. 1 the world of physical science
The document summarizes the scientific method process used by two engineers, James Czarnowski and Michael Triantafyllou, to improve ship propulsion systems. (1) The engineers observed that ships use a lot of fuel and penguins are efficient swimmers. (2) They hypothesized that a propulsion system imitating a penguin's wing movements would be more efficient than propellers. (3) To test their hypothesis, they conducted experiments comparing propeller-driven boats to designs with movable panels resembling penguin wings.
Interactive Textbook Ch. 22 The Nature of Light
1) The document discusses the electromagnetic spectrum, which is made up of different types of electromagnetic waves ranging from gamma rays to radio waves.
2) It explains that electromagnetic waves, including visible light, transfer energy and have different wavelengths and frequencies, though all travel at the same speed in a vacuum.
3) Radio waves, microwaves, infrared waves, visible light, ultraviolet light, and other types of electromagnetic waves are described along with their common uses such as broadcasting, communication, heating food, night vision, and more.
Interactive Textbook Ch. 21 The Nature of Sound
1) Sound travels faster through solids than liquids or gases, and the speed depends on the temperature of the medium. The speed of sound in air is around 343 m/s.
2) The pitch of a sound depends on its frequency, which is measured in Hertz. Higher frequencies mean a higher pitch. Humans can only hear sounds within a certain frequency range.
3) The Doppler effect causes changes in the perceived pitch of a sound source depending on whether the source is moving towards or away from the listener. This explains why an ambulance siren sounds higher in pitch as it approaches.
Interactive Textbook Ch. 20 The Energy of Waves
1. The document discusses key properties of waves including amplitude, wavelength, frequency, and speed. It defines each property and explains how it relates to the energy carried by a wave.
2. Amplitude is the maximum distance of vibration from the rest position, and waves with larger amplitudes carry more energy since they require more energy to form. Wavelength is the distance between two identical points on waves, and waves with shorter wavelengths have more energy.
3. Frequency is the number of waves passing a point per unit time, measured in Hertz. Higher frequency waves have more energy than lower frequency ones. Wave speed depends on the medium and can be calculated using the equation that relates speed, wavelength, and frequency.
Interactive Textbook Ch. 20 The Energy of Waves
1. The document discusses key properties of waves including amplitude, wavelength, frequency, and speed. It defines each property and explains how it relates to the energy carried by a wave.
2. Amplitude is the maximum distance of vibration from the rest position, and waves with larger amplitudes carry more energy since they require more energy to form. Wavelength is the distance between two identical points on waves, and waves with shorter wavelengths have more energy.
3. Frequency is the number of waves passing a point per unit time, measured in Hertz. Higher frequency waves have more energy than lower frequency ones. Wave speed depends on the medium and can be calculated using the equation that relates speed, wavelength, and frequency.
Interactive Textbook Ch. 8 Work and Machines
Machines make work easier by reducing the amount of force needed. A machine transfers the input force applied over a greater distance to increase the output force. This allows the same amount of work to be done with less input force. For example, a screwdriver acts as a lever to pry open a paint can lid, applying a smaller force over a greater distance to generate a larger output force on the lid.
Interactive Textbook Ch. 6 Forces and Motion
This document summarizes key concepts about gravity and motion from a textbook section. It explains that Galileo proved that heavy and light objects fall at the same rate due to gravity, with gravity pulling more on heavy objects but those objects also being harder to move. It then discusses other concepts like air resistance affecting falling objects, terminal velocity being reached when air resistance equals gravity, and free fall occurring without air resistance. It also covers orbiting objects being in a state of free fall, projectile motion resulting from horizontal and vertical motions combining, and centripetal force providing the inward pull that keeps objects in orbit.
Interactive Textbook Ch. 8 Sec 1
1) Gravity pulls on all objects with mass towards other massive objects like Earth. Gravity causes all falling objects to accelerate at 9.8 m/s2, making them speed up equally regardless of mass.
2) Air resistance opposes the downward motion of falling objects and depends on factors like size and shape. Heavier, more compact objects like crumpled paper fall faster than flat, air-resistant objects like paper.
3) Objects reach a steady fastest speed called terminal velocity when air resistance equals the downward force of gravity. Without air resistance, all objects fall at the same rate in a vacuum.
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Syllabus of Second Year B. Pharmacy
2019 PATTERN.
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Cytokines and their role in immune regulation.pptx
This presentation covers the content and information on "Cytokines " and their role in immune regulation .
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Thornton ESPP slides UK WW Network 4_6_24.pdf
ESPP presentation to EU Waste Water Network, 4th June 2024 “EU policies driving nutrient removal and recycling
and the revised UWWTD (Urban Waste Water Treatment Directive)”
Nucleophilic Addition of carbonyl compounds.pptx
Nucleophilic addition is the most important reaction of carbonyls. Not just aldehydes and ketones, but also carboxylic acid derivatives in general.
Carbonyls undergo addition reactions with a large range of nucleophiles.
Comparing the relative basicity of the nucleophile and the product is extremely helpful in determining how reversible the addition reaction is. Reactions with Grignards and hydrides are irreversible. Reactions with weak bases like halides and carboxylates generally don’t happen.
Electronic effects (inductive effects, electron donation) have a large impact on reactivity.
Large groups adjacent to the carbonyl will slow the rate of reaction.
Neutral nucleophiles can also add to carbonyls, although their additions are generally slower and more reversible. Acid catalysis is sometimes employed to increase the rate of addition.
Equivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
bordetella pertussis.................................ppt
Bordettela is a gram negative cocobacilli spread by air born drop let
The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/Phenomics assisted breeding in crop improvement
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
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Lab equipment powerpoint
- 2. Stir rod
- 6. Beaker
- 7. Beaker Tongs
- 11. Ring Stand
- 13. Wire mesh
- 15. Test Tube
- 16. Test tube tongs
- 18. Test Tube Holder
- 19. Test tube holder
- 21. Funnel
- 22. Pipet
- 23. Eye Dropper
- 26. Scoopula
- 27. Filter paper
- 28. Watch glass
- 30. Electronic Scale
- 31. Spring Scale