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  • California Institute
  • A pioneer of a form of bioengineering known as "directed evolution," Arnold and her team of researchers at the California Institute of Technology generate new versions of P450 that do things nature never designed them to do, including mapping chemical signals in the brain and testing the toxicity of drugs. (princeton.edu)
  • research
  • Tom Atlee's research and thought innovations span from the conscious evolution of social systems to collaborative dynamics to a host of other ideas centering on group, social and political dynamics. (nottingham.ac.uk)
  • Research on lab animals has shown some of the chemicals cause cancerous tumors and damage developing brain cells , and some can alter hormones essential to reproductive and neurological development. (scientificamerican.com)
  • toxic
  • Arnold's techniques have enabled pharmaceutical companies to manufacture drugs without using toxic chemicals and energy companies to produce biofuels that replace fossil fuels. (princeton.edu)
  • They [endocrine disrupting chemicals] are overtly toxic at high doses but act like hormones, with completely different actions, at low doses. (scientificamerican.com)
  • aqueous
  • To achieve this, excipients such as buffers and antioxidants may be required to ensure chemical stability, and solubilizers, such as propylene glycol or polysorbates, may be necessary for drugs with poor aqueous solubility to maintain the drug in solution. (forextrading-madeeasy.com)
  • adequate
  • The U.S. Environmental Protection Agency has concluded that current testing of hormone-altering chemicals is adequate for detecting low-dose effects that may jeopardize health. (scientificamerican.com)
  • Linda Birnbaum, director of the federal institute that funded part of the study, said in an interview Tuesday that she is concerned that babies are being exposed to chemicals without adequate information on their health risks. (scientificamerican.com)
  • life
  • How can life originate from a lifeless chemical soup? (phys.org)
  • Calvin also studied plant oils as energy sources, the chemical evolution of life, and radiation chemistry. (asbmb.org)
  • Directed evolution - taking natural proteins and rewriting their DNA by accumulating mutations over multiple generations - allows scientists "to rewrite the code of life" to solve human problems, Arnold says. (princeton.edu)
  • journal
  • In general, the flame retardant chemicals detected were not associated with a particular type of product, manufacturer, or the year of purchase," the researchers wrote in the peer-reviewed study published Wednesday in the journal Environmental Science and Technology . (scientificamerican.com)
  • risks
  • The EPA frequently evaluates the risks of chemicals with tests that expose lab animals to high doses, then extrapolating to lower doses that people and wildlife encounter. (scientificamerican.com)
  • Vandenberg said although the debate over how to assess the risks of these chemicals remains, the EPA's acknowledgement that nonmonotonic dose responses exist is a step forward, culminating years of science. (scientificamerican.com)
  • carbon
  • In this work we show experimental results on the thermal evolution of formamide when deposited at 17 K as pure and in mixture with water or carbon monoxide. (rsc.org)
  • study
  • Eighty percent of cushions used in car seats, portable cribs and other baby furnishings contain chemical flame retardants that can accumulate in babies' bodies, according to a new study to be published Wednesday. (scientificamerican.com)
  • One item contained three different flame retardants, and some products had levels of the chemicals that made up as much as 12.5 percent of the foam's weight, according to the study. (scientificamerican.com)
  • properties
  • In addition, urea's physico-chemical properties allow it to form a range of viscous eutectic solutions by simple evaporation or freezing. (springer.com)
  • studies
  • Doty P, Marmur J, Eigner J, Schildkraut C (1960) Strand separation and specific recombination in deoxyribonucleic acids: physical chemical studies. (springer.com)
  • found
  • In the 2012 report, Vandenberg and colleagues pointed to chemicals such as bisphenol A (BPA) - which is found in polycarbonate plastic and some canned foods and paper receipts - and atrazine, a pesticide used mostly on corn, as examples of chemicals that are inadequately tested to protect human health. (scientificamerican.com)
  • Birnbaum said the most common chemical found in the baby products -- known as chlorinated Tris -- mutates DNA and may be carcinogenic. (scientificamerican.com)
  • course
  • In coming winter semester, for the first time a theoretical and practical preliminary course in chemistry didactics will be held from 19. (uni-muenchen.de)