According to new research from the Monell Center and collaborating institutions, odors from human skin cells can be used to identify melanoma, the deadliest form of skin cancer. In addition to detecting a unique odor signature ...
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Are teeth the latest victims of bisphenol A? Yes, according to the conclusions of work carried out by the research team led by Ariane Berdal of the Université Paris-Diderot and Sylvie Babajko, Research Director at Inserm ...
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Prometheus, the mythological figure who stole fire from the gods, was punished for this theft by being bound to a rock. Each day, an eagle swept down and fed on his liver, which then grew back to be eaten again the next day.
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Scientists at the University of Liverpool and Callaghan Innovation in New Zealand have developed a new chemical approach to help harness the natural ability of complex sugars to treat Alzheimer's disease.
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(Medical Xpress)—A chemical compound designed and created at the University of Otago may hold great promise for reducing tissue damage following heart attack, stroke or major surgery, according to research ...
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Hydrocarbons, a chemical compound commonly found in household items from cleaning products to gasoline, are among the top 10 causes of pediatric poisoning deaths in the United States. A new study by researchers ...
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Janelle Leuthaeuser is on the cutting edge of biophysics. A molecular genetics and genomics Ph.D. student, she is part of a nationwide effort to create a more efficient generation of protein-based drugs.
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(Medical Xpress)—The sense of smell remains a mystery in many respects. Fragrance companies, for instance, know it is crucial that chemical compounds in perfumes reach nostrils at different rates to create ...
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In an advance in efforts to reduce the use of animals in testing new cosmetic and other product ingredients for skin allergies, scientists are describing a new, highly accurate non-animal test for these skin-sensitizers. ...
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An extract from a shrub often used for medicinal purposes in tropical Africa may have lethal effects against a dangerous parasite that transmits malaria, according to a multi-institutional team of scientists ...
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Researchers at The University of Texas Health Science Center at Houston (UTHealth) have discovered phthalates, industrial chemicals, in common foods purchased in the United States. Phthalates can be found in a variety of ...
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(Medical Xpress)—For a bunch of inanimate chemical compounds, the nucleic and amino acids caught up in the infamous "selfish" segregation distorter (SD) saga have put on quite a soap opera for biologists ...
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A novel tool exploits baker's yeast to expedite the development of new drugs to fight multiple tropical diseases, including malaria, schistosomiasis, and African sleeping sickness. The unique screening method uses yeasts ...
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(HealthDay)—In what researchers are calling a first, a new analysis suggests that the greater a woman's exposure to a type of common chemical compound called PFCs, the greater her risk for developing osteoarthritis.
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Weak concentrations of bisphenol A are sufficient to produce a negative reaction on the human testicle. This has just been shown experimentally for the first time by René Habert and his colleagues (UMR Cellules ...
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A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions and that have a unique and defined chemical structure. Chemical compounds consist of a fixed ratio of atoms that are held together in a defined spatial arrangement by chemical bonds. Chemical compounds can be compound molecules held together by covalent bonds, salts held together by ionic bonds, metallic compounds held together by metallic bonds, or complexes held together by coordinate covalent bonds. Substances such as pure chemical elements and elemental molecules consisting of multiple atoms of a single element (such as H2, S8, etc.) are not considered chemical compounds.
Elements form compounds to become more stable. They become stable when they have the maximum number of possible electrons in their outermost energy level, which is normally two or eight valence electrons. This is the reason that noble gases do not frequently react: they already possess eight valence electrons (the exception being helium, which requires only two valence electrons to achieve stability).
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