Tag: "forces" at biology news
New study warns limited carbon market puts 20 percent of tropical forest at risk
...al forest. Otherwise, the same market and economic forces
that cause deforestation elsewhere will quickly descend on regions that so far have avoided significant loss, the authors say. Cutting and burning tropical forests releases the atmospheric carbon they store, contributing significantly to global cli...
Research aims to identify markers for menopausal women at risk for deadly blood clot
...kes into account the researchers belief that three forces
an injury, a platelet effect at the injury, and the inflammation that affects the platelet and the vessel wall are involved in the development of thrombotic risk. The study builds on the teams earlier findings in an animal model. They are applyi...
...es that agriculture is now one of the main driving forces
of global environmental change. Bennett and other presenters in this session have identified potential tipping points related to water and agriculture that could have major global consequences. No human activity has so large an impact on water sys...
How cells change the pace of their steps
...ublished Aug. 3 on the journals Web site describes forces
and energy exerted by the cells as they traveled a...ecise measurements of the repetitive nature of the forces
and strain energies exerted by cells, and this has allowed us to better characterize the mechanics o...
Unlocking proteins from their cellular shell
...ty of Pennsylvania have demonstrated that everyday forces
can alter the structure of proteins tucked within ...ssue of the journal Science. Cells are exposed to forces
every minute of every day. Some forces
are exerted by the flow of bodily fluids, such as blood stre...
Coelacanth fossil sheds light on fin-to-limb evolution
...limbed animals like Tiktaalik roseae, the new data forces
scientists to reassess the characteristics of the coelacanths, Friedman said. Living fossils are a problematic concept, he said. Often times the fossils look like living animals because the fossils are so poorly studied. Once you start to go in dep...
Testing the force of a shark's bite
...n in this project involves determining the maximum forces
that Great Whites can exert using advanced mathema...ne cables and towed arrays. "Measurement of bite forces
will help in testing and developing materials suitable for cabling and sensory equipment used in the...
Under magnetic force, nanoparticles may deliver gene therapy
...with nanoparticles, researchers could use magnetic forces
to direct the cells to a target organ. Furthermore, researchers might deliver nanoparticles to magnetically responsive, removable stents in sites other than blood vessels, such as airways or parts of the gastrointestinal tract. We could remove the...
Cell damage caused by brushing may help keep gums healthy
...ut muscle cells underneath as well. The mechanical forces
must have been transmitted through the intact epit...singly, since its not a hard surface, it transmits forces
quite readily. The gum, tongue and other surfaces in the oral cavity are covered with layers of ep...
Genomics study provides insight into the evolution of unique human traits
...of primates exist. One of the main genomic driving forces
in primate evolution is gene duplication, explains Dr. James Sikela, Professor at the University of Colorado. To our knowledge, this study is the most comprehensive assessment of gene copy number variation across human and non-human primate species ...
Presence of wolves allows aspen recovery in Yellowstone
...The OSU researchers say they believe there are two forces
at work both the lower populations of elk, and their changed behavior due to fear of wolves but its difficult to determine exactly which force is the most significant. Of note, they say, is that elk populations now are actually higher than they w...
University of Leeds strengthens China links in membrane and neurobiology
...c group of membrane and neurobiologists is joining forces
with leading scientists from the strongest research groups and institutions across China. This new initiative, between the Faculty of Biological Sciences at the University of Leeds and academics from the State Key Laboratory of Biomembrane and Memb...
Did pterosaurs feed by skimming?
...erodynamic modelling techniques. They compared the forces
acting on the modern skim-feeding bird, genus Rynchops, with those likely to occur on a pterosaur. Big was beautiful for the pterosaur, with evolutionary trends towards giant sizes. However, Humphries et al. show that the size of these colossal anima...
Philadelphia ecologist receives top Mongolia honor
...pport research into the environmental and economic forces
challenging the nation. Mongolia, which last year celebrated its 800th anniversary, faces enormous challenges not only from an encroaching global economy but also from climate change that threatens its mountains, taiga forests, wetlands, streams and ...
Unraveling the physics of DNA's double helix
... link in scientists' understanding of the physical forces
that give DNA its famous double helix shape. "T...cule. For that, you need solid measurements of the forces
that stabilize DNA." In a study published online by Physical Review Letters on July 5, Marszalek's...
A stepwise retreat: How immune cells catch pathogens
...mic properties of the filopodia and the mechanical forces
that they can apply are not fully understood. Using a special microscopy technique a team of researchers from the groups of Ernst Stelzer and Gareth Griffiths at EMBL could for the first time observe the tentacle dynamics in three dimensions and meas...
5 OHSU faculty members singled out for honors
... of state and local health-related boards and task forces
and in School of Nursing activities. OCNE is a collaborative mechanism established in response to the states critical nursing shortage to foster a dramatic expansion in the capacity and enrollment of Oregons nursing programs. Through OCNE, students a...
Europe struggles to meet the challenges posed by PGD patients travelling abroad
... Member States create a barrier to treatment which forces
patients to travel abroad in circumstances which may compromise their interests. It is for individual Member States to decide how best to approach this problem, but options that they could consider could include harmonisation of regulation across Eur...
Discovery could help bring down price of DNA sequencing
...ecule through the channel with it. The lubrication forces
arising in this fluid layer create the resistance that opposes the electrical pulling force. Ghosals calculations in the PRL paper show that his theoretical model is consistent with experimental results and explains the DNAs speed. Understanding th...
Nanoparticles hitchhike on red blood cells: a potential new method for drug delivery
...ventually detach from the blood cells due to shear forces
and cell-to-cell interactions, and are cleared from the system by the liver and spleen. Red blood cell circulation is not affected by attaching the nanoparticles. Attachment of polymeric nanoparticles to red blood cells combines the advantages of t...
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