NASA study finds tiny particles in air may influence carbon sinks
...luding forests, crops, and grassland. When aerosol levels were high, the amount of carbon absorbed by an eco...and cloud-free days. They examined carbon exchange levels for high and low levels of scattered sunlight as well as high and low levels of aerosols. Measuremen...... through the environment. Concerns over increasing levels of mercury contamination have sparked fish consump...lants, or from areas such as Nevada that have high levels of naturally occurring mercury, can be in the air for six to 12 months and can cross continents. "Re...Yo-yo diet redistributes toxins in body tissue; Olestra+caloric cut boosts toxic excretion
... that virtually "all people tested have measurable levels of some of these compounds," the Jandacek et al. report notes. Because the compounds and many of their metabolites are lipophilic (attracted to fat) they are stored in adipose (fat) tissue where they remain stable, usually without adverse affect in m...Timing is everything for optimum combined cancer therapy
...s blood vessel formation and is found at very high levels in gliomas. Blood vessels in gliomas and many other tumors are abnormal and do not deliver oxygen to tumor cells as efficiently as normal blood vessels do in normal tissues. This is clinically significant because lack of oxygen, or hypoxia, can make ...Weizmann Insitute scientists show how proteins beat the evolutionary stakes
...n simulated by selecting those mutants with higher levels of activity in one of the promiscuous traits. ...g one skill affect the others? Interestingly, the levels of the other promiscuous activities also underwent drastic changes. In most cases, the levels droppe...New technique provides insights into gene regulation
...croarrays, also know as gene chips, to measure the levels of mRNAs. An array is an orderly arrangement of sa...e U of T team enables accurate measurements of the levels of individual exons that make up different mRNAs to be attained, which current gene chips are unable...Ocean colour satellites guide research ship through South Pacific's watery desert
... a similar high nutrient level but low chlorophyll levels the hope is that detailed analysis of samples gat...pulations at an early stage of growth, with higher levels of surface nitrates, the phytoplankton having yet to consume this stock....Drilled shells show extinction's lasting effects
...hemselves by fish, crabs or other predators. High levels of competition should favor faster feeding, said G...tition intensity has not returned topre-extinction levels even though a long time has passed since theevent, Vermeij said. The cause of the Pliocene extincti...Flame retardant exposure linked to house dust
...an in Europeans, although it is not known if these levels affect human health. Some studies have suggeste...ever, diet alone does not seem to explain the high levels of PBDEs that have been measured in human breast milk and serum. According to the new NIST/EPA study...Highlights of January 2005 issue of Biology of Reproduction
...ility. Increase in osmolarity or glucose/phosphate levels can cause 2-cell arrest of both blocking and non-blocking embryos, and the blocking effect of osmolarity is rescued by glycine. These results not only clear up long-standing confusion about the etiology of the 2-cell block but also highlight the impo...Suspect protein found to play protective role in chronic lung disease
...hat models chronic lung disease resulted in higher levels of inflammation, mucus, and tissue damage in the l...cess adenosine. These knockout mice have elevated levels of the signaling molecule and swiftly develop a lethal respiratory disease that combines the feature...JCI table of contents, 3 January 2005
... that occurs as a result of their exposure to high levels of radioiodide. Yuri E. Nukiforov led a team o...mors (where patients have not been exposed to high levels of radiation), the most common genetic mutational event occurs within the BRAF gene. In contrast, mu...Cincinnati study of Chernobyl residents uncovers new cause of thyroid cancer
... that occurs as a result of their exposure to high levels of radioiodide. Yuri E. Nukiforov led a team of re...mors (where patients have not been exposed to high levels of radiation), the most common genetic mutational event occurs within the BRAF gene. In contrast, mu...Protein in urine may warn of preeclampsia risk in pregnant women
...OSTON Researchers have discovered that diminished levels of an angiogenic protein associated with preeclamp...ood pressure and testing for proteinuria [abnormal levels of protein in the urine] during the third trimester of pregnancy," explains the study's senior autho...Other highlights in the January 5 JNCI
...acebo group in two trials of zoledronic acid. High levels of each marker at the beginning of the study and recent marker levels were associated with negative clinical outcomes, including death, in these patients. Contact: Roxan...Study examines relationship of vitamin A pathway to breast tumor progression
...cted tissue, despite presumably normal circulating levels of vitamin A," the authors write. "The consequence of deficient vitamin A storage is a fundamental point that needs to be studied further, but if CRBP-I is indeed essential, then epidemiologic studies attempting to correlate human vitamin A status wi...Backcountry water quality tests are good news for campers
...vada. From his recent sampling sites, only 17 had levels high enough to be directly linked to recreational ...mount of naturally occurring aquatic bacteria. Low levels of coliform bacteria actually can be part of the natural environment. If bacteria were not present i...No blind mice, thanks to UF scientists
...hat happens is high blood pressure and blood sugar levels associated with diabetes cause leaks in blood vess...ng that the researchers show how SDF-1 changes the levels of a protein called occludin, which affects junctions between cells that line the blood vessels. It ...Don't count on vitamin C to boost your exercise performance
...centration of ascorbic acid to supra-physiological levels in both young and older adults with acute administration." Real exercise points out complexity of interactions The report noted that: "Oxidized low-density lipoprotein concentration was negatively associated with maximum heart rate and was greater i...US researchers uncover the science behind the breast cancer protective effect of olive oil
...r cell lines that oleic acid dramatically cuts the levels of an oncogene called Her-2/neu (also known as erb B-2). High levels of Her-2/neu occur in over a fifth of breast cancer patients and are associated with highly aggressi...