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Bill Moyers: Toxic Chemicals PVC monomer pt. 1
This is an excerpt from Moyer's investigation into the massive cover-up amongst the major chemical manufacturers like Dow, B. F. Goodrich, and the many others that aired years ago. |
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Bill Moyers: Toxic Chemicals PVC monomer pt. 2
This is the 2nd excerpt from Moyer's investigation into the massive cover-up amongst the major chemical manufacturers like Dow, Union Carbide, DuPont, Esso, B. F. Goodrich, and the many others that aired years ago, and which deals with chemicals like PVC, among others. |
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NanoCocktails-Using Lasers to Create Nanomaterials : DigInfo
http://movie.diginfo.tv DigInfo News At NanoTech 2008, Laser Zentrum Hannover presented a range of micro and submicro structures, created by placing a solid material such as a metal, in a liquid and using short-pulsed lasers to break up the material into nanoparticles. Interview: "I'm from the laser center in Hannover, which is one of the biggest laser research institutes in the world, and we are focusing on nanotechnology using lasers. We use lasers to ablate materials in a liquid, this sounds strange but its quite easy, so the laser beam transmits the liquid and in the liquid there is a material which we make nanoparticles from. The liquid can be also a monomer. A monomer is a liquid out of which plastics are made. One example is this Nano Cocktail, we call it "Nano On The Beach". We call it a Nano Cocktail because this contains a cocktail of nano functions without changing the plastic, so you can use a standard plastic like what mobile phones or toys are made from with a standard procedure and put nanoparticles into this plastic by laser ablation. Then you can mould the plastic, then you have this part, its injection moulded, three dimensional and you can make it with standard technology. To summarize, we have patented a very simple process, in order to bring nano into end products without maing complicated changes to the process chain, we are just changing the raw material by using lasers." Embedding nanoparticles into polymer based materials can enhance a range of properties such as hardness, light absorption, biocompatibility, water repulsion, or optical properties. |
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Come Together
In laboratory 4 we studied how enzyme activity is affected by environmental conditions. Enzymes permit cells to carry out the many functions that are required in a living system. Every enzyme has a specific substrate and a specific function. They change their substrate in one of two ways: either by dehydration synthesis (a monomer is added to another molecule) or hydrolysis (a monomer is removed from another molecule). Each enzyme has a unique conformation that enables them to perform their specialized tasks. The substrate molecule meets the enzyme at the active site, where the reaction takes place and the substrate is altered. The conformation of a particular enzyme depends on several levels of protein structure. First is sequence of amino acids or the primary structure. The attraction between these molecules is usually expressed as hydrogen bonds. The secondary structure is characterized by a unique sequence on hydrogen bonds between more distant molecules on the chain. In this lab we saw changes in the effectiveness of the enzymes when the secondary structure of the enzymes is altered. Tertiary and Quaternary structures describe successively larger parts of a protein, influenced by other electrostatic bonds. Enzymes possess an affinity for their substrate. We observed the enzyme catechol oxidase and how it is affected by temperature. Test tubes of catechol oxidase of various temperatures were inserted into a spectrometer to determine the amount of enzyme activity. The spectrometer measures the amount of product from the reaction over a period of time and determines the concentration of the solution by measuring the amount of light that is absorbed by the solution. We noticed that the enzymes at room temperature were the most active over time. The enzymes that were heated and cooled were denatured and over time became less and less active. |
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Fire snake
monomer + syringe + matchbox + 3 bored interns at maranakatte = FIRE SNAKE |
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Prepping Nails for Acrylic Application : Mixing Acrylic Powder for Nail Application
Preparing your nails for acrylic application is the first step in applying fake nails. Learn how to prepare liquid monomer and acrylic powder for fake nails in this free nail care video from a professional nail technician. |
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Molecular games for a 3rd grader.
Do you like to play with your Lego? Try Molecular Games - it's so much fun! This video is about third grader building different molecules. The molecular formula C2H4O may refer to: Acetaldehyde, Ethenol, Ethylene oxide From Wikipedia, the free encyclopedia Acetaldehyde, sometimes known as ethanal, is an organic chemical compound with the formula CH3CHO or MeCHO. It is a flammable liquid with a fruity smell. Acetaldehyde occurs naturally in ripe fruit, coffee, and fresh bread, and is produced by plants as part of their normal metabolism. It is popularly known as the chemical that causes hangovers. Ethenol, also called vinyl alcohol, hydroxyethene or hydroxyethylene, is an alcohol with chemical formula C2H3OH (H2C=CHOH) and CAS number 557-75-5. Under normal conditions, it tautomerizes to acetaldehyde. For this reason the thermoplastic polyvinyl alcohol (PVA or PVOH), which would be derived from this monomer, is made indirectly by polymerization of vinyl acetate followed by hydrolysis of the ester bonds. The chemical compound ethylene oxide is an important industrial chemical used as an intermediate in the production of ethylene glycol and other chemicals, and as a sterilant for foods and medical supplies. It is a colorless flammable gas or refrigerated liquid with a faintly sweet odor. It is the simplest example of an epoxide. Caffeine is a bitter white crystalline xanthine alkaloid that acts as a psychoactive stimulant drug and a mild diuretic (speeds up urine production) in humans and other animals. Caffeine was discovered by a German chemist, Friedrich Ferdinand Runge, in 1819. He coined the term "kaffein", a chemical compound in coffee, which in English became caffeine. Caffeine is also called guaranine when found in guarana, mateine when found in mate, and theine when found in tea; all of these names are synonyms for the same chemical compound. Caffeine is found in varying quantities in the beans, leaves, and fruit of over 60 plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants. It is most commonly consumed by humans in infusions extracted from the beans of the coffee plant and the leaves of the tea bush, as well as from various foods and drinks containing products derived from the kola nut or from cacao. Other sources include yerba mate, guarana berries, and the Yaupon Holly. In humans, caffeine is a central nervous system (CNS) stimulant, having the effect of temporarily warding off drowsiness and restoring alertness. Beverages containing caffeine, such as coffee, tea, soft drinks and energy drinks enjoy great popularity. Caffeine is the world's most widely consumed psychoactive substance, but unlike most others, it is legal and unregulated in nearly all jurisdictions. In North America, 90% of adults consume caffeine daily. The U.S. Food and Drug Administration lists caffeine as a "Multiple Purpose Generally Recognized as Safe Food Substance". One 2008 study suggested that women consuming 200 milligrams or more of caffeine per day had about twice the miscarriage risk as women who had none, while another 2008 study found no link between miscarriage and caffeine consumption. |
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Vinyl Chloride and Occupational Cancer
After WWII, vinyl chloride (VC) became a key chemical used to make plastic products. It was manufactured exclusively for polymeri After WWII, vinyl chloride (VC) became a key chemical used to make plastic products. It was manufactured exclusively for polymerization into polyvinyl chloride (PVC), a plastic used in construction, packaging, electrical, and transportation industries; in household products such as flooring, water piping, videodiscs, and credit cards; and in medical products such as disposable intravenous bags, tubing, and bedpans. In 1974-1975, the disclosure that vinyl chloride exposure had caused rare liver cancers in worker led the recently created U.S. Occupational Safety and Health Administration (OSHA) to issue an emergency standard to ptotect workers. VC and PVC production plants had to reduce workplace exposure levels from 500 ppm to 1 ppm, to provide protect workers' health. When OSHA issued the new exposure limit of 1 ppm, industry spokespeople issued dire predictions of job loss and plant closures. However, in less than two years virtually all U.S. manufacturing plants were able to meet the new standard while still maintaining rapid growth of sales volume. This was accomplished largely through better containment of unpolymerized VC monomer and improved exposure monitoring. For more information, go to the 2005 article in the Journal Environmental Health Perspectives at http://www.ehponline.org/members/2005/7716/7716.html and read the book, Deceit and Denial: the deadly politics of industrial pollution by Markowitz and Rosner, from the University of California Press, http://www.ucpress.edu/books/pages/9844/9844.intro.html . This clip is from the 1978 movie, More Than a Paycheck, and the voice is the late Dr. Irving Selikoff. |
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Making a Model Organism Database Part 2F
The "Making a Model Organism Database" webinar walks you through the process of building a Pathway Tools Pathway/Genome Database from an annotated genome file all the way through to the final product. In Part 2F, we round out our coverage of protein editing by showing you how to make protein complexes, and how to move reactions from one protein to another (for example, from a monomer to a multimer). |
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Dogfight
A dogfight... for fun. |
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Stefu Walk
walking like Stefu sö schlendrian! |
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Lec 28 | MIT 3.091 Introduction to Solid State Chemistry
Organic Glasses - Polymers: Synthesis by Addition Polymerization and by Condensation Polymerization View the complete course at: http://ocw.mit.edu/3-091F04 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu |
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Polymers and Monomers Bio Project
our Project we made for our 10th grade Bio Class. Due on Dec 12th 2007 on Polymers and Monomers |
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Antibody structure - LiaGen
http://www.cafepress.com/liagen/5738086 Antibodies (also known as immunoglobulins, abbreviated Ig) are gamma globulin proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses. They are typically made of basic structural units - each with two large heavy chains and two small light chains - to form, for example, monomers with one unit, dimers with two units or pentamers with five units. X-ray crystallography is a method of determining the arrangement of atoms within a crystal, in which a beam of X-rays strikes a crystal and scatters into many different directions. From the angles and intensities of these scattered beams, a crystallographer can produce a three-dimensional picture of the density of electrons within the crystal. From this electron density, the mean positions of the atoms in the crystal can be determined, as well as their chemical bonds, their disorder and sundry other information. Design & production: Kosi Gramatikoff, PhD |
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hydrolysis of starch
Our video displays the break down of starch through the childhood game Red Rover. The starch starts off as a polysaccharide, meaning it is made up of more than one molecules linked together through hydrogen bonds. We simulated this by having 5 students form a chain and connect by linking arms. Then 2 students ran through the student's arms thus imitating hydrolysis (the chemical breakdown of a bond through an enzyme). The two students running through acted as the enzyme amylase, and broke down the starch into disaccharides. The chain of humans was broken down into now two different chains. We then had students once again run through these chains, but this time acted as the enzymes maltase breaking down the disaccharides into monomers. Thus, breaking down the entire chains until the monomers were no longer connected but were single units of glucose. |
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How Gravity Affects Molecules
This NASA video segment highlights NASA's reduced gravity program. The reduced gravity program runs experiments in reduced gravity environments and simulated weightlessness. An expert provides details of an experiment to create unique materials using polymerization techniques. This segment also explains polymers, monomers, and several types of convection. Slopes and ratios help explain a relationship between gravity and convection. |
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Pasta Makes You Row Fasta!
Carbohydrates are considered sugars, and there are three types: monosaccharides, disaccharides, and polysaccharides. Monosaccharides are mainly used to provide energy for the cell. Some examples of monosaccharides are glucose and fructose, which are monomers. Multiple monomers linked together create polymers. When two monosaccharides, such as sucrose and lactose, come together through dehydration synthesis, they create disaccharides. In dehydration synthesis, a water molecule is added, and an enzyme links two monosaccharides together. Disaccharides are for the most part readily soluble in water. Disaccharides are broken down through a process called hydrolysis, in which a water molecule is removed and an enzyme breaks apart the monomers. The third type of carbohydrate, polysaccharides, are found in starches, which are made up of repeating subunits of glucose, and are broken down through a complicated process. Examples of polysaccharides include cellulose in plants, as well as chitin in fungi and insects. Presented by Afra K., Angie T., and Shoshana C. |
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MDMA. So... why do people use it?
Some clips about why people use MDMA and what positive psychological effects it can have on peoples life. The side of MDMA the govenment doesn't tell you. Quote from Mark Kleiman, PhD, Drug Policay Analyst, UCLA. "I've never heard anybody say to me 'Meth-amphetamine improved my life, I'm a better person for having used Meth-amphetamine', same with cocaine, I know lots of people that like to use cocaine, but I've never heard anyone try to claim that cocaine is good for you. With MDMA, lots of people think that the drug improved their life, and continue to think that after they've stopped using it. Thats whats astonishing." If not abused, mdma is an amazingly safe substance. Alcohol, tobacco, caffeine and asperin each cause hundreds of times more deaths a year than people who have died while using mdma. The trouble with xtc pills is that they are illegal, so only criminals sell them, so you never really know whats in them. This can often be avoided by instead using pure mdma in crystal form. If de-criminalised (not necissarily legalised; there is a big difference) there would be hardly any deaths attributed to xtc, as instead of pills people would just buy the safer pure mdma. Why the 'mdma causes holes in your brain' scare is false: http://www.erowid.org/chemicals/mdma/mdma_neurotoxicity3.shtml Challenge from the journal NewScientist to the govenment scientists to prove the brain damage/neurotoxic conclusion: http://www.mapinc.org/drugnews/v02/n763/a07.html (they never did) After this, the govenment scientist who had done the original study which caused severe brain damage (which has never been replicated since) admitted they had actually given the monkeys high doses of METHAMPHETAMINE by mistkae. Whoops. Since then studies have found that the brain returns to nearly normal 3-4 days after use, and serotonin levels deplete by an average of just 5%, but always return fully back to normal levels after approximately two weeks to a maximum of a month. A lot of good information about MDMA, users guide, health risks, safe dosage, and much more: http://thedea.org/usersguide.html Dont do mdma. Its illegal. But if you know someone who is then heres some rules of thumb for them. Always research thouroughly before using (some rare conditions dont mix well [see link above]), never do it more than once every two weeks (ideally once every month is advisable), ALWAYS try to get pure mdma instead of pills, and make sure they are from a reliable trustworthy source, if getting pills always test them with a drug testing kit, just one is reccomended dosage (never do more than two, for some small people half of one is enough), or 150-200mg of pure mdma (80-120 mg recommended starter dose depending on your size), eat plenty of vitamin c vitamin e and fish oils before and after use or some multivitamins+minerals [not really an essential step], take some 5-htp supplements as you start to come down (not essential, just helps the slight depression sometimes felt the day after), and get a good nights sleep. The above guide is not set in stone, people do often ignore many of the steps above and they're fine, its just what to do to be completely safe if using mdma. People have done stupid amounts of xtc, one guys done 40,000 pills in his lifetime, and was on over 30 a day at his peak. http://www.guardian.co.uk/society/2006/apr/04/drugsandalcohol.drugs1 Which is ridiculous, even though he is still alive and kicking (kind of), if you do that many your just asking for trouble. People very rarely die of taking too much mdma as long as no other drugs are involved, people have literally done grams of the stuff in one night, but the after effects of using that much are not pleasant at all, and the buzz not really better than the normal stated dose. The key with MDMA is less is more. If anyone does more than the recommended dose, they'll just increase the side effects without increasing the good feeling, as the the substance in your brain that actually makes you feel good on MDMA has already been used up, no matter how much you take. If you do it two days in a row you'll likely need over three times the amount the day before to get the same buzz, then your its getting into unhealthy amounts. Even then its unlikely to be as good as the day before, as you've got boosted extra unwanted side effects. Even after a week the buzz is not quite the same, it usually returns fully within a month. keyords psychedelics entheogen empathogen enactogen hallucinogenic legal illegal propeganda kratom acid poppers ketamine ghb khat methadone illicit phenethylamine pills euphoria dmt magic mushrooms psilocybe amanita downers ethnobotanicals dissosciatives Monomers Stimulants Depressants Tranquillisers Antihistamines Nootropics Neurochemicals Polymers Precursors Neurotransmitters research chemicals mescaline tryptamine opiate opiod Stropharia Panaeolus methamphetamine crystal meth |
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Horizon: UK's Top 20 harmful drugs rated by Real Scientific Data Pt 5of5
Documentary by Horizon on how the science behind drugs should rank them in terms of risk, harm and other factors, if govenment propeganda was ignored. keyords psychedelics entheogen empathogen enactogen hallucinogenic legal illegal propeganda kratom acid poppers ketamine ghb khat methadone illicit phenethylamine pills euphoria dmt magic mushrooms psilocybe amanita downers ethnobotanicals dissosciatives Monomers Stimulants Depressants Tranquillisers Antihistamines Nootropics Neurochemicals Polymers Precursors Neurotransmitters research chemicals mescaline tryptamine opiate opiod Stropharia Panaeolus methamphetamine crystal meth |
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SEED
Seeds contain all of the necessary biomolecules to remain self-sufficient, making it an important source of human nutrition. Derived from the ovules of land plants, seeds allow vegetation to colonize and thrive in a variety of environments. The seed is activated when it comes in contact with water. A hormonal message is sent from the embryo and activates specialized cells in the Aleurone layer. The Aleurone layer then releases its enzymes into the endosperm. The enzymes perform hydrolysis reactions to break down starch and other nutrients, which follow a concentration gradient into the developing embryo. Starch is a polysaccharide that is composed of repeating subunits (monomers) of glucose. Through the hydrolysis process of starch, the enzymes provide nourishment for the embryo and it eventually outgrows the seed coat, sprouting into a wonderful plant. BY: Philip Guidon, Jeegar Patel, Anthony Eng, Robert Antonio, Harrison Rice Music credit: Ocean's 12 soundtrack. |
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3D model of the bacterial divisome by LifeExplorer
During the division cyle of E. coli, at the end of the daughter chromosome segregation process, FtsZ proteins assembles into the Z ring on the inner face of the cytoplasmic membrane at the cell centre, marking the future division site. The Z ring then recruits at least ten membrane-associated proteins to assemble the cell-division protein machinery. This machinery synthesizes the division septum, which consists of cell-wall material between the two daughter celles, with the Z ring at the leading edge of membrane invagination. Contraction of the Z ring and constriction of the outer membrane follow. This movie shows a 3D model of the cell-division machinery made with the LifeExplorer modelling software in collaboration with F.-X. Barre and N. Dubarry (Centre de Génétique Moléculaire, CNRS Gif, France). The Z-ring before contraction containing about 2000 FtsZ proteins (800 nm diameter) is superimposed with the whole machinery close to the septum closure. FtsK monomers are attached to the Z-ring through a 200 nm linker not represented. |
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Horizon: UK's Top 20 harmful drugs rated by Real Scientific Data Pt 2of5
Part 3: http://www.youtube.com/watch?v=XKg-_w8h9B0 documentary by Horizon on how the science behind drugs should rank them in terms of risk, harm and other factors, if govenment propeganda was ignored. keyords psychedelics entheogen empathogen enactogen hallucinogenic legal illegal propeganda kratom acid poppers ketamine ghb khat methadone illicit phenethylamine pills euphoria dmt magic mushrooms psilocybe amanita downers ethnobotanicals dissosciatives Monomers Stimulants Depressants Tranquillisers Antihistamines Nootropics Neurochemicals Polymers Precursors Neurotransmitters research chemicals mescaline tryptamine opiate opiod Stropharia Panaeolus methamphetamine crystal meth |
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Horizon: UK's Top 20 harmful drugs rated by Real Scientific Data Pt 3of5
Part 4: http://www.youtube.com/watch?v=VWLjsD5xeeY Dont be fooled: Cannabis is not pure THC. What this guy experienced is nothing like the buzz from cannabis, which contains hundreds more active chemicals. The scientific study this is based on however, does not make this mistake. The way they worked out the statistics means that because its the most widely used illegal drug this effects the placement quite a lot. keyords psychedelics entheogen empathogen enactogen hallucinogenic legal illegal propeganda kratom acid poppers ketamine ghb khat methadone illicit phenethylamine pills euphoria dmt magic mushrooms psilocybe amanita downers ethnobotanicals dissosciatives Monomers Stimulants Depressants Tranquillisers Antihistamines Nootropics Neurochemicals Polymers Precursors Neurotransmitters research chemicals mescaline tryptamine opiate opiod Stropharia Panaeolus methamphetamine crystal meth |
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Horizon: UK's Top 20 harmful drugs rated by Real Scientific Data Pt 4of5
Part 5: http://www.youtube.com/watch?v=gqKtVZJH8mY documentary by Horizon on how the science behind drugs should rank them in terms of risk, harm and other factors, if govenment propeganda was ignored. keyords psychedelics entheogen empathogen enactogen hallucinogenic legal illegal propeganda kratom acid poppers ketamine ghb khat methadone illicit phenethylamine pills euphoria dmt magic mushrooms psilocybe amanita downers ethnobotanicals dissosciatives Monomers Stimulants Depressants Tranquillisers Antihistamines Nootropics Neurochemicals Polymers Precursors Neurotransmitters research chemicals mescaline tryptamine opiate opiod Stropharia Panaeolus methamphetamine crystal meth |
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How Gravity Affects Molecules
This NASA video segment highlights NASA's reduced gravity program. The reduced gravity program runs experiments in reduced gravity environments and simulated weightlessness. An expert provides details of an experiment to create unique materials using polymerization techniques. This segment also explains polymers, monomers, and several types of convection. Slopes and ratios help explain a relationship between gravity and convection. |
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