Improved NIST SRM aids lead poisoning detection
...ry, the certificate of analysis will be updated to reflect the new information. Information values are considered useful, but lack sufficient data for NIST to be able to assign an uncertainty to the measurement....Unlocking proteins from their cellular shell
...and even the rigidification of breast tumors often reflect changes in protein organization and assembly that adversely affect static and dynamic forces in, on, and around cells. Protein targeting is the strategy commonly employed to create new drugs to deal with those adverse affects. Cytoskeletal proteins...Synchrotron could help save the Tassie devil
... which detects how different materials absorb and reflect the radiation can be used to determine if the composition of hair differs between diseased animals and healthy ones. The infra-red spectrum tells us about protein and fat structure and whether its changing, Dr Church says. But the technology to do...Discovery in plant virus may help prevent HIV and similar viruses
...ctivating transcription," he said. "This must also reflect a fundamental mechanism for transcription inherited by these viruses." Humans and organisms used for research, such as fruit flies and the tiny wormlike organism Caenorhabditis elegans, have only one gene in the protein complex that retroviruses us...... average gene. "The genetic variability appears to reflect adaptation of local circumstances," says Weigel. It is likely that such variable genes allow plants to withstand dry or wet, hot or cold conditions, or make use of short and long growing seasons. Such genome analyses of unprecedented details will a...Rise of dinosaurs in Late Triassic more gradual than once thought
...tion in survival of dinosaur precursors, or merely reflect the paucity of fossil finds, he said. Ghost Ranch, near the town of Abiquiu, where artist O'Keefe lived, is known for its Triassic fossils excavated from the Chinle Formation. Many of them are kept in the Ruth Hall Museum of Paleontology at the hea...Unraveling the physics of DNA's double helix
...their measurements leveled off. "Those plateaus reflect the breaking and unfolding of the helix," Marszalek explained. With no bonds between bases to break, the thymine chains' showed little resistance to extension and no plateau. Based on the known structure of the single stranded DNA molecules, they h...Germany's embryo protection law is 'killing embryos rather than protecting them'
...yo either. The law needs to be changed urgently to reflect the current state of the art. It is far worse to kill embryos after they have implanted in a womans womb, than it is to take embryos before implantation, when they are no more than a collection of cells, freeze any surplus embryos and transfer no m...Pre-implantation genetic screening reduces both ongoing pregnancy and live birth rates in over 35s
...y be mosaic, where a single cell does not properly reflect the chromosomal composition of the whole, so that chromosomal analysis may not be representative of the entire embryo. PGS is a relatively new technique that is in increasing use in IVF centres around the world. In 2003, more than 1700 IVF cycles ...2 MSU professors spearhead international water project
...volved by enhancing the learning competencies that reflect the knowledge, attitudes and skills essential to living and working as global citizens when they graduate. One premise of our partnership is that students are powerful catalysts for research collaboration, Tarabara said. Our research will be organi......rridors. Scientists believe these differences may reflect variations in management and proximity to calcium-rich building and paving materials. Contrary to their predictions, researchers discovered no relationships found between land use and heavy metal levels. Rather, researchers found trace metals to be...JCI table of contents: June 14, 2007
...y and a normal litter size. In summary, the data reflect that the indispensability of FKBP52 in uterine progesterone signaling is genetic background- and pregnancy stage-specific. As there is evidence of a correlation between progesterone supplementation and a reduction in the risk of recurrent miscarriage...Nitrate in Lake Superior: On the rise
...surements in 1906. This level of nitrate doesn't reflect either post-World War II increases in fertilizer and fossil fuels, which would tend to increase levels faster, or the effects of the Clean Air Act of 1972, which would likely decrease levels, says Robert Sterner, a limnologist at UMN and lead author ...Stanford researchers find stem cells in colorectal tumors
...rst author of the paper, that finding could simply reflect the fact that all of those tumors arise from similar tissue. It could also mean that a similar therapy could target all three cell types. Dalerba also found a novel protein on the colorectal cancer stem cells, called CD166, that had not previously ...Description of a gene implicated in the development of Fanconi anemia and predisposition to cancer
...line the findings that animal models do not always reflect the clinical phenotype of the disease. A consortium of 13 European and North American laboratories and hospitals performed the research, which included the group directed by Dr. Jordi Surralls of the Departament de Gentica i de Microbiologia (Depa...Alarming acceleration in CO2 emissions worldwide
...ns, particularly China, where the increases mainly reflect increasing per capita gross domestic product. The study** divided the world into the USA, the European Union, Japan, the nations of the former Soviet Union, China, India, and three regions covering the rest of the world. Between 2000 and 2004 the ...Researchers develop way to calculate speed of bacterial sex
...s us a new tool for designing new experiments that reflect gene transfer in the real world, including such things as transport of cells in porous media of soils and aquifers," explained Massoudieh. "It also can be used for extrapolative modeling to predict rates of gene transfer in certain cases, mainly envi...The 'driving' force behind electric vehicles
...o buy EVs. The diversity in the policies adopted reflect both practical and cultural differences between th...res still have standard operating procedures which reflect deep-rooted national political and social cultures despite increasing globalization. It also sugges...'Might have been' key in evaluating behavior
...nstincts. These blood flow changes in the brain reflect alterations in the activity of nerve cells in the vicinity. In this case, they measured the brain's response to "what could have been acquired" and "what was acquired." This newly discovered "fictive learning" signal was measured, localized and preci...Study shows tight diabetes control does not impact cognitive ability in type 1 diabetes
...uring the study, the patients' A1C readings, which reflect average blood glucose levels over several months, differed between the two groups by about 2 percentage points (7.1 percent for the intensive therapy group vs. 9.0 percent for the conventional). At the study's conclusion in 1993, researchers reported...