Distribution in Biological News

Geography and history shape genetic differences in humans

... of genetic chance have heavily influenced the distribution of genetic variations in populations around the ... around -- has exerted a strong effect on the distribution of variants." To determine whether the ... Pritchard and his colleagues compared the distribution of variants in parts of the genome that affect ...

GenWay Biotech obtains exclusive rights to AMDL's DR-70 cancer test in US and Canada

... with major operations in China, regarding the distribution of AMDL's DR-70 (FDP) cancer test in both the ... channels and healthcare outreach. Both exclusive distribution agreements extend for five-years based on ... available to consumers. The marketing and distribution agreements for DR-70 will be financially ...

NSF to fund water and environment technology center

... include improved monitoring of large-scale water distribution systems to sensors at individual households ... Water Village focuses on future treatment and distribution of water and wastewater, with enormous potential ... of the Water Village is to develop smart water distribution systems capable of self-monitoring and ultimately ...

Nutritional supplementation program helps prevent weight loss among children in African country

... and colleagues assessed the effect of a 3-month distribution of RUTF to nonmalnourished children in a region ... malnutrition and evaluated the effectiveness of a distribution of RUTF delivered at the village rather than the ... the six intervention villages received a monthly distribution of 1 packet per day of RUTF (500 calories per ...

The birds of Spain, in a digital ornithological encyclopedia

... or have been spotted in Spain, along with their distribution patterns and the threats that confront them. ... system and sensory organs. Another looks at their distribution and classification, focusing on the evolution of modern birdlife, and its main distribution areas or endemisms. The chapter "Birds and their ...

Syracuse University partners with Serum Institute of India to develop vaccines for children

... An oral vaccine for tetanus would enhance distribution in impoverished countries. Doyle's team will also ... The vaccines' possible side effects limit distribution in countries where access to health care is not ... side effects. The results could lead to wider distribution in low-income countries, ultimately saving ...

Sky islands: metaphor or misnomer?

... as temperature and rainfall, to "backcast" the distribution of each species at the height of the last ice age ... elevations 21,000 years ago and that the average distribution of each species was larger than it is now. ... helps researchers understand current population distribution within the western U.S.'s Great Basin and ...

Killer pulses help characterize special surfaces

... Nak-Hyun Seong came up with a way to measure the distribution of site enhancements on the substrate surface. ... demonstrated their technique by measuring the distribution of local enhancements for benzenethiolate ... intensity." Measurements like these, of the distribution of local site enhancements, will help researchers ...

The good, the bad and the smelly: USGS at the 2008 Coral Reef Symposium

... of the Indo-Pacific: Researchers assessed the distribution and prevalence of growth anomalies in Acropora ... all three regions had growth anomalies, but the distribution and prevalence was highest in American Samoa. ... Coral Disease in the Remote Central Pacific: distribution and the Importance of Proper Characterization: ...

Killer whales, blind bats, discriminating dolphins, mating birds

... flight speed -- results in an interesting spatial distribution of the combined ranging errors. Objects at one ... 18 different species of bat control the spatial distribution of ranging errors by signal sweep rate. "The ... focussing: how flying bats control spatial distribution of Doppler-ranging errors by signal sweep rate" ...

Neural cell transplants may help those with Parkinson's disease

... influences after cell transplantation. Tissue distribution of trophic factor is a critical variable to ... of the University of Kentucky. The volume of GDNF distribution in the trophic factor recipients significantly correlated with motor function improvements. Tissue distribution may not have been optimal with NTN, but the ...

New species discovered in Brazil

... species and data on the richness, abundance, and distribution of wildlife in one of the most extensive, ... & Conservation of the Cerrado). The geographic distribution of some of the species registered is restricted ... anatomy, reproductive biology, life cycle, and distribution of the species, all of which help us in future ...

Ants and avalanches: Insects on coffee plants follow widespread natural tendency

... for three years and wondered whether the spatial distribution patterns they observed could be explained through ... planted in a grid pattern. So the non-uniform distribution of ant colonies must be due to something other ... beetle would go extinct if not for the patchy distribution of ants, because the larvae can only survive with ...

Present-day species of piranha result from a marine incursion into the Amazon Basin

... fresh waters of South America. Their geographical distribution extends from the Orinoco River basin (Venezuela) ... consequently took samples from around their whole distribution range. Between September 2002 and June 2003, ... a fundamental role in the appearance then the distribution of piranha species. Five million years ago, the ...

Between water and rock -- a new science

... humans are changing the natural nanoparticle distribution with no idea of the consequences. For instance, ... once inside the treatment plant and/or distribution system in response to changing chemical ... it through the treatment facility and into the distribution system. The researchers concluded that ...

Prehistoric aesthetics explains snail biogeography puzzle

... Cook Islands. The snail's multiarchipelago distribution is unique in the partulid tree snail family; most ... islands in the Society archipelago. The odd distribution pattern has had biologists scratching their heads ... were similarly transported by accident, their distribution pattern should be random, with nearby islands ...

DNA analysis shows true dispersal of protozoa

... to previous findings, it seems that the global distribution of macro- and microorganisms might be similar. A ... have carried out an analysis of the global distribution and diversity of three narrow taxonomic groups of ... this way, a more accurate picture of their global distribution and importance may be obtained. ...

After dinosaurs, mammals rise but their genomes get smaller

... total DNA. LTRs come in a range of sizes and ages, and it is the age distribution of LTRs that interested Lynch and his colleagues. "This study started ... in the literature," Lynch said. "The data we saw suggested a bulge in age distribution of transposable elements in humans and mouse." Left enough time, Lynch ...

Red List overlooks island species

... Union for the Conservation of Nature (IUCN), any species with a distribution area of less than 2,000 km2 should be considered to be threatened. This ... criteria for threatened species. As invertebrates usually have a smaller distribution area than large vertebrates and birds "the same baseline criteria cannot ...

Work in mice will contribute to the study of hereditary diseases that lead to blindness

... against damages or infections in such system. Her work has analysed the distribution of microglial cells in la retina of the mouse during all its development, ... "Embryology of the Nervous System" has been studying for years the origin, distribution and migratory characteristics of these cells, both in situations of normal ...

Evolution: Crabs go deep to avoid hot water

... together 200 years' worth of oceanographic knowledge to investigate the distribution of a notorious deep-sea giant the king crab. The results, published this ... With differences of only a couple of degrees in temperature affecting the distribution of the king crab, it is difficult to predict the consequences of range ...

Tumor growth and chemo response may be predicted by mathematical model

... aren't enough nutrients and oxygen to support tumor cells, an uneven distribution of these substances is created inside and around the tumor mass, Cristini ... be predicted by using biophysical laws that link the effects of the uneven distribution of cell nutrients and oxygen to overall tumor behavior. For different ...

Supply-Chain Council Announces Winners of 2009 Supply Chain Excellence Awards

... and the General Services Administration (GSA). USTRANSCOM serves as the distribution Process Owner (DPO) for the Department of Defense. The DSO team ... tools and methods. (2) Customer Service Levels are measured by distribution wait times on the JDDE PMF metrics, Velocity and Precision, which are ...

Climate change driving Michigan mammals north

... ecological research." In the study, Myers and coworkers analyzed distribution and abundance records of opossums and eight species of small forest ... use that go along with them can't completely explain the changing mammal distribution and abundance patterns, Myers said. For one thing, the mammal changes are ...

Native Americans descended from a single ancestral group, DNA study confirms

... researchers concluded that the most straightforward explanation for the distribution of the 9-repeat allele was that all modern Native Americans, Greenlanders ... foolproof. There were two other plausible explanations for the widespread distribution of the allele in the Americas. If the 9-repeat allele had arisen as a ...

Better living through chemistry

... formed. Other Findings The Joye team also found that the depth distribution and magnitude of key metabolic processes conducted by the microbial communities are unique to each type of geologic feature. "The diversity and distribution of the microbes we studied say a lot about how life adapts to extreme ...

Scientists at CSHL discover mobile small RNAs that set up leaf patterning in plants

... source to form a concentration gradient across each leaf. This graded distribution pattern creates discrete regions of gene activity so that cells in each ... controlled In addition to mobility, the team attributes the unique distribution pattern of these small RNAs to the way they are produced within the leaf ...

Salient Stills Notches Significant Advances in Profitability, Diversity of Sales and Customers, and Video Forensics Technology in 2008

... Growing Overseas Sales and distribution Compound Steady Domestic Demand for Innovative Video Security Systems for ... U.S. sales steady throughout last year, the company benefited from new distribution partner relationships and significant sales in Asia, Europe, and the ...

Scientists at CSHL discover mobile small RNAs that set up leaf patterning in plants

... source to form a concentration gradient across each leaf. This graded distribution pattern creates discrete regions of gene activity so that cells in each ... controlled In addition to mobility, the team attributes the unique distribution pattern of these small RNAs to the way they are produced within the leaf ...

Long-term study of orchard ground cover management systems

... Minirhizotrons were used to study root emergence, turnover, and depth distribution of apple rootstocks under four groundcover management systems: ... reported previously. GMS treatments affected root growth, turnover, and distribution at this orchard, and these differences were linked with long-term trends ...

Climate change's impact on invasive plants in Western US may create restoration opportunities

... The researchers assessed the relationship between climate change and the distribution of five prominent invasive plants in the western United States known ... then determined what combined set of climate variables best described the distribution of these weeds, and mapped all of the places in the U.S. where these ...

USGS Science Picks

... the first rigorous estimate of grizzly bear population density and distribution for this area. The results of this study were published in the most recent ... Protection for Alaskan Species Scientists are studying species range and distribution in Alaska to help identify those that have a significant portion of their ...

Queen's University Belfast researchers trace octopuses' family tree

... the deep-sea biodiversity comes from." This revelation into the global distribution and diversity of deep-sea fauna, to be reported this week in the respected ... to be completed in late 2010. It aims to assess and explain the diversity, distribution and abundance of marine life in the oceans, past, present and future. ...

Research around the North Pole

... climate change. Biologists on board investigated the occurrence and distribution of the copepod Oithona similis in the Arctic Ocean. This small crab is an ... larvae. Another biological programme is aimed at collecting data on the distribution of birds, seals, whales and polar bears along the route. An almost ...

Scientists call for protected 'swimways' for the endangered leatherback sea turtle

... the effects of oceanography, such as ocean currents, phytoplankton distribution and sea-floor topography, on Pacific leatherbacks' distribution and movement; and then developed a model that could predict the presence ...

UI researchers find potentially toxic substance present in Chicago air

... and her UI colleagues Dingfei Hu and Andres Martinez reported, "The wide distribution of PCB11 in Chicago air is consistent with volatilization of this compound ... by chemical companies until U.S. production ceased in the late 1970s. The distribution of PCB11 throughout residential areas of Chicago suggests that the ...

October 2008 GEOLOGY and GSA TODAY media highlights

... of heat and mass exchanges between the solid earth and the oceans is the distribution of seafloor hydrothermal sites. Fontaine et al. show, by means of ... in the crust along the ridge axis can explain the observed heterogeneous distribution of sites along ridge portions. Their models highlight the differences in ...

Researchers find animal with ability to survive climate change

... the main predicted effects of climate change is a forced shift in species' distribution range. The study leader, Dr Jim Provan, from Queen's School of ... to previous studies, suggest that the species has been able to shift its distribution range in response to previous changes in the Earth's climate, and thus ...

Evolving designer ecosystem sheds light on unintended consequences

... surface water availability, dramatically increasing the timing and spatial distribution of stream flow. "Prior to these alterations, channel systems like those ... arid ecosystems and how they are impacted by human-altered systems, water distribution and design. The authors point out that the unintended consequences "must ...

September Geology and GSA Today media highlights

... the ocean. The end-Permian geologic record is consistent with the modeled distribution of hydrogen sulfide, supporting the notion that hydrogen sulfide and ... have been hypothesized. New paleobiological studies on the environmental distribution and ecological importance of brachiopods, benthic molluscs, and bryozoans ...