Tag: "constraints" at biology news

Stanford researchers establish center for physics-based simulations of biological structures

...perimental data from the real world to provide the constraints necessary to drive and validate models and simulations. The problems under investigation are all currently existing peer-reviewed projects: RNA folding, which has implications for rheumatological diseases (principal investigator Dan Herschlag); myosi...

Endurance running may be key to evolution of human body form

... have fueled growth of the human brain by relaxing constraints on human acquisition of protein and fat. "We are very confident that strong selection for running - which came at the expense of the historical ability to live in trees - was instrumental in the origin of the modern human body form," says Dennis ...

Studies in Royal Society journals include stress in birds and depletion of medieval fish stocks

...r L Persson, Dr AMD de Roos and Dr A Bertolo Gape constraints determine the population dynamics of cannibalistic fish populations. Implementing individual life history characteristics of three cannibalistic fish species - the yellow perch, the Eurasian perch, and the northern pike - into an individual-based mod...

New drug sidesteps Gleevec resistance in human trials

...at didn't hold the target to such tight structural constraints -- might work against the mutations. In short, Sawyers wondered whether a drug that bound Abl in the "on" position, like a Src inhibitor, would be the model for Gleevec's second coming. As fate would have it, Bristol-Myers Squibb had a dual Abl/Src ...

UCSD researchers derive lessons about human evolution from chicken genome

... "This may reflect some still-unknown evolutionary constraints on genomic makeup of diverse species that lead to apparent conservation of genomic architectures over hundreds of millions of years." The researchers found a very low rate of rearrangement between chromosomes in the chicken genome--about one-third th...

Study in Royal Society journal on first evidence for magnetic field detection in sharks

... a conflict of interest between the sexes, or from constraints forcing the sexes to pay attention to different traits. Contact: Dr Ulrika Candolin Group-beneficial traits, frequency-dependent selection and genotypic diversity: an antibiotic resistance paradigm by Dr LA Dugatkin, Dr M Perlin, Dr J Scott Lucas an...

Big, old fish key to restoring groundfish stocks

...d to have a sustainable fishery and the biological constraints of most marine groundfish species, the option that seems to make the most sense is marine reserves," Hixon said. A well-devised network of marine reserves, Berkeley, Hixon and colleagues said in their report, would allow a much higher population of ...

Study in Royal Society journal on managing GM crops for environmental benefit

...pay or disperse and breed, depending on ecological constraints by Dr R Bergmller, Dr D Heg and Professor M Tabors...xperimental evidence that the degree of ecological constraints from dispersing for own breeding influences concurrently two major decisions of helpers: whether to ...

Weight-loss and exercise study compares center- and home-based programs

...ms. They need a program that works within the time constraints imposed by their work schedules and family commitments, which leads to considerable interest in home-based approaches to weight loss and exercise. In designing the center- and home-based programs, Dennis included the five components of weight-loss tr...

Why is the helix such a popular shape? Perhaps because they are nature's space savers

... a case of nature working the best it can with the constraints at hand," Kamien said. "The spiral shape of DNA is dictated by the space available in a cell much like the way the shape of a spiral staircase is dictated by the size of an apartment."...

Technological revolutions in sensors, robotics, and telecommunications allow new views of ocean

...the formation and fate of the seafloor, as well as constraints on the nature and evolution of life - on this planet and others," says Van Dover. A new submersible, capable of diving to 6500 meters and providing access to more than 90% of the ocean, is slated to replace Alvin in 2008. Ocean Aquanauts Aquari...

Monsanto fund awards $3.7 million to Washington University for school science van program

...rials. The Monsanto program will help bridge these constraints by allowing teachers to borrow a science materials kit to use in their classrooms. "By the time the mobile classroom comes to the school, the kids will be ready to do an extension of the activities they did in class," said May. A program coordinato...

Satellite images give a better picture of sediment transport

...rial transport that occur, taking into account the constraints exerted by the wind field and tidal effects (1). The model can determine the erosion fluxes and pinpoint the areas of particle deposition. Validation and refinement of the models are achieved by means of in situ measurement of turbidity, and of sedim...

Hawaiian soils reveal clues to cultural history

...plary opportunity to investigate the environmental constraints on human settlement patterns in an intensive agrarian economy, because of both its rich archaeological and ethnographic records, and its usefulness for understanding ecosystem development in an environmental context," wrote the authors. Beginning a...

Live faster, die younger: The shortest-living vertebrate

...were common, indicating the severe biological time constraints and intense selective pressure that this community experiences. These findings on the shortest-living vertebrate, along with recent discoveries on coral reefs of the smallest and earliest-maturing vertebrate species, are helping to broaden our unders...

Device traps, disables harmful bacteria

..."Engineering control methods must be balanced with constraints such as occupant comfort, economic factors, and building management strategies to ensure that the health risks associated with bioaerosol exposure are as low as practical."...

ANU medical researcher wins national award

... on their importance to immune regulation, without constraints of prior knowledge. It harnesses a novel process of studying gene function, which mirrors the spontaneous genetic variation that occurs naturally during population growth by introducing random changes in the mouse genome sequence. "This immediately o...

DNA constraints control structure of attached macromolecules

...at Illinois. "We are using DNA to build structural constraints that control the movement and shape of an attached...d and misfolded RNAs. They could also hook the DNA constraints to other molecules, including non-biological macromolecules, to control their folding. Importantly, ...

EPO upholds limited patent on BRCA2 gene

...t the EPO had to decide about this case within the constraints of the patent law, and could thus only take the above criteria into account. Nevertheless, we still believe that there is something fundamentally wrong if one ethnic group can be singled out by patenting. Women coming to be tested for breast cancer ...

The World Congress of Nephrology 26-30 June 2005, Singapore

...t of increasing numbers of CKD patients within the constraints of the healthcare system in my own country," remarked one of the speakers from the UK, David C. Wheeler, Senior Lecturer in Nephrology, University College London. With a truly international and multidisciplinary flavor the WCN 2005 successfully unite...

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(Date:10/19/2014)... the last 30 years contributed only marginally to ... time, according to a new study published in ... access is fundamental to development: it brings improvements ... and health," says IIASA researcher Shonali Pachauri, who ... is widely agreed to be an important goal ...
(Date:10/17/2014)... German . ... in order to reproduce? And why are there two sexes ... latest issue of the research journal Molecular Human Reproduction ... Ramm from Bielefeld University Bielefeld has compiled this special issue ... a female to copulate with several males in quick succession ...
(Date:10/16/2014)... new synthesis of recent research findings to inform their ... two states. , The Ecology and Management of ... Synthesis of the Relevant Biophysical Science and Implications for ... the U.S. Forest Service,s Pacific Northwest Research Station, is ... a synthesis of the large body of scientific information ...
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