Tag: "forces" at biology news
Group decisions: From compromise to leadership in pigeon homing
...researchers have deepened our understanding of the forces
that underlie decision-making by social animals. T... decision-making could emerge from just two simple forces
acting simultaneously on the pigeons' behavior: "move toward your familiar route" and "move toward y...
First global analysis of sexual behavior
... countries comes from opposition from conservative forces
to harm reduction strategies. Governments tend to shy away from supporting interventions other than those with orthodox approaches. Sexuality is an essential part of human nature and its expression needs to be affirmed rather than denied if public he...
Spin-out company seeks medicines from South American rain forests
...e world's fastest drug profiling system has joined forces
with a Brazilian company to seek new medicines fro...sis. In a separate deal, e-Therapeutics is joining forces
with CURA, a pharmaceutical consortium backed by the Brazilian Government, which is establishing a c...
Conservative forces hampering progress in sexual and reproductive health
...of conservative political, religious, and cultural forces
around the world threatens to undermine progress i...rnational Development), writes: "Some conservative forces
sadly do not want to address the difficult issues of sex, sexuality, and adolescents' and women's ri...
UC Davis scientists' groundbreaking research: Mate-attracting chemicals
...t the University of California, Davis, have joined forces
to trick fruit flies into thinking that silkworm moths are potential mates. Groundbreaking research in the labs of chemical ecologist Walter Leal and genetics researcher Deborah Kimbrell shows that genetically engineered fruit flies responded to the...
Secrets revealed in sequencing of honey bee genome
...el Weaver, a commercial beekeeper in Texas, joined forces
to pitch the project. Robinson organized the academic community, while Weaver sought support from the bee industry. With funding from the National Institutes of Health and the U.S. Department of Agriculture, the sequencing began in December 2002, and...
Lehigh scientist receives NHGRI grant to streamline, expand use of genome sequencing
...ate resolution that one can achieve when measuring forces
in biomolecules: Can we detect a difference of a single base? "If we can," he says, "there are serious implications for genomics, because one can then imagine sequencing without the fluorescent labels and time-consuming purification steps that are t...
Stretching bone marrow stem cells pushes them towards becoming blood vessel
...f Sciences, highlight the importance of mechanical forces
in stem cell differentiation. Mesenchymal stem ce...s designed the experiment to simulate the physical forces
a cell would encounter if it were to become a blood vessel. Kyle Kurpinski, a UC Berkeley graduate ...
Sunflower speciation highlights roles for transposable elements in evolution
... an excellent model group for studying the natural forces
influencing the activation and proliferation of transposable elements in plants. This is because in addition to their hybrid origins, each of the three hybrid species is adapted to, and evolved in, a so-called abiotically extreme environment--two of ...
NSF awards $4.5 million to researchers for study of protein folding mechanisms
...ents. For most proteins the delicate balance of forces
that controls and guides the folding process is highly sensitive to environmental solution conditions such as salt concentration, pH, temperature, viscosity, molecular crowding and the presence of folding co-factors and chaperones. However, due to...
Springer expands life science program with In Vitro journals
...wo societies. Of course, we are delighted to join forces
with both societies to provide their members with highly professional and fast publication services." Dr. Paul J. Price, President of SIVB, stated, "Our partnership with Springer guarantees the financial health of the journals, expands their visibil...
Fossilized liquid assembly: Nanomaterials research tool
...ical topology, studying, for example how different forces
dominate at different scales of length. Looking ahead, the NIST team plans to build on this study, expanding the technology as a 3D imaging platform....
Comparing chimp and human DNA
...nome sequence in order to unravel the evolutionary forces
at work behind the human genome's fastest evolving regions. Pollard explains that "most of the differences between chimps and humans are not in our proteins, but in how we use them." Only three HARs lie in genes that are likely to encode proteins. T...
Researchers make nanosheets that mimic protein formation
...y" Kotov said. "Once we know how to manipulate the forces
between the nanoparticles and their ability to sel...he group sought to make the connection between the forces
governing S-layer protein assembly and the forces
governing the nanoparticle assembly. That's when G...
Updated Iraq survey affirms earlier mortality estimates
... The proportion of deaths attributed to coalition forces
diminished in 2006 to 26 percent. Between March 20... that the number of deaths attributed to coalition forces
had declined in 2006, though overall households attributed 31 percent of deaths to the coalition. Re...
Nanoparticle assembly enters the fast lane
...oduced partially rigid, double-stranded DNA, which forces
interacting linker segments of DNA to extend away from the gold surface, allowing for more efficient assembly. "By using properties of DNA, we can increase assembly kinetics, or speed, by relatively simple means without a lot of synthetic steps,"...
Spring in your step helps avert disastrous stumbles, scientists say
...ften by speeding up. By monitoring the real-time forces
exerted by the limb on the ground, as well as the angles and locations of key joints at the hip, knee, and ankle, Biewener and Daley determined that the stumbling birds' movements were consistent with a mass-spring model that treats the body as a mas...
Fossils pinpoint tropics as Earth's most fruitful biodiversity spawning ground
...ssels, Belgium; and Leiden, the Netherlands. The forces
behind the flood of evolutionary activity that flows from the tropics remain a mystery. "But now that we have a handle on the dynamics that set up this spectacular planet-sized gradient, we can begin to get at the underlying processes in a whole new ...
New study explains why hotter is better for insects
...esearchers have discovered a limit to the powerful forces
of natural selection, at least when it comes to the adaptation of insects to cold temperatures. "For thermodynamic reasons, cold temperatures present a challenging problem for ectothermic [cold-blooded] organisms because they slow biological proce...
With record resolution and sensitivity, tool images how life organizes in a cell membrane
...ell different from another part of a cell. But the forces
that are responsible for segregating components, or compartmentalizing components in cell membranes, simply are not known.'' Lipid rafts Scientists have long known that certain proteins get pieces of grease stuck on them-become ''prenylated,'' in...
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