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Coupling in Biological News

UAB study reveals bone coupling factor key to skeletal health

... at Birmingham (UAB) have discovered a molecular coupling factor that helps bones grow and remodel ... osteoporosis drugs, the researchers said The coupling factor is a human protein called transforming ... the first time, we've identified TGF beta-1 is a coupling mechanism for bone resorption and bone ...

Heart attacks: The tipping point

... victims. By looking at the electrical activity coupling two types of heart muscle cells, Dr. Zlochiver ... by electrical activity. Studying the electric coupling tiny electric signals between myocytes and ... be deduced from even an MRI or CT scan. "This coupling is crucial to the initiation of fibrillation," he ...

Simulations help explain fast water transport in nanotubes

... Aluru said. "Orientation can give rise to a coupling between the water molecules' rotational and ... and flow had not been known," Aluru said. "The coupling occurs between the rotation of one molecule and the translation of its neighboring molecules. This coupling moves water through the nanotube in a helical, ...

August 2008 Geology and GSA Today media highlights

... Neoarchean lithospheric strengthening and the coupling of Earth's geochemical reservoirs Patrice Rey ... belts. The erosion of these mountains acted as a coupling agent between the continental geochemical ... and Earth's mantle. One of the outcomes of this coupling is that phosphorus (a key element for DNA), which ...

AGU Journal Highlights -- March 19, 2008

... on the Sun. These results demonstrate a direct coupling between the upper atmosphere of the Sun and the ... of the thermosphere. Title: Solar-terrestrial coupling evidenced by periodic behavior in geomagnetic ... orbit also crosses Jupiters magnetic field lines, coupling the moon and the planets upper atmosphere. This ...

Green gel

... processes for the production of hybrid materials depended on very specific coupling techniques that could not be used for some protein side-chains. In ... applicable because in principle it is suitable for any protein. The coupling occurs at both ends of the protein chainand these are the same for all ...

AGU journal highlights -- Sept. 6, 2007

... 12. Evidence for interhemispheric coupling between the stratosphere and the mesosphere Air circulation in the ... behavior. Title: Evidence for interhemispheric stratosphere-mesosphere coupling derived from noctilucent cloud properties Authors: B. Karlsson, H. ...

Marine microbes creating green waves in industry

... routes. We are taking advantage of the natural diversity of marine organisms that has arisen through evolution in different environments and coupling that with high-tech screening systems. We are looking to find naturally occurring microbes that already have a built-in capacity to do the chemical ...

Super-sleepers could help super-sizers!

... to oxidative stress. Since these small molecules are believed to cause most of the damage during periods of re-awakening, increasing mitochondrial coupling does not seem to be a particularly good idea for animals that tend to exhibit short periods of spontaneous arousal during the dormancy period, in ...

7th annual [BC]2 Basel Computational Biology Conference 'Molecular Evolution' June 18-19, 2009

... on E. coli. In his address, Professor Lenski will describe in more detail recent findings in this project providing new insights on the dynamic coupling of phenotypic and genomic evolution and the role of complex mutations in the origin of new functions. Eugene V. Koonin will close the conference ...

Ultrasound imaging now possible with a smartphone

... Computer engineers at Washington University in St. Louis are bringing the minimalist approach to medical care and computing by coupling USB-based ultrasound probe technology with a smartphone, enabling a compact, mobile computational platform and a medical imaging device that fits in ...

6 young ASU faculty earn NSF Career awards

... Van der Vaart will develop and apply new computational techniques to understand the causes of these massive structural rearrangements to uncover the coupling between the motion of the protein and the DNA, and to establish the sequence of events in the coupled binding-bending-folding process. "When ...

American Chemical Society Weekly PressPac -- April 8, 2009

... ricin substrates. Ricin-catalyzed adenine release from ribosomes stops protein synthesis and is the mechanism of action of this deadly toxin. By coupling adenine release to light formation by firefly luciferase, scientists can visualize the presence of ricin by the simple detection of light. The test ...

Stanford scientists find new solutions for the arsenic-poisoning crisis in Asia

... health crisis from escalating. "The real thing is, how do we help the people who are there?" Fendorf said. "But first, we have to understand the coupling of hydrology-the way the water is flowing-with the chemistry and biology." Finding a study site Arsenic-laden rocks in the Himalayas feed ...

Patience pays off with methanol for uranium bioremediation

... to investigate the effectiveness of various electron donors for long-term uranium immobilization. Further research is needed to understand the coupling between the microbial community and the biogeochemical processes that occur to immobilize the uranium. While previous research has focused on ...

Arsenic and old toenails

... or due to slow toenail growth concentrating harmless quantities of arsenic), and to look at the possible pathways by which the arsenic is ingested. coupling our analyses with regular blood measurements would be very revealing." However the researchers are definitely NOT requiring people to send in ...

More accurate FEMA flood maps could help avoid significant damages and losses

... model for calculating wave heights, which was introduced in the 1970s, with a two-dimensional wave model. Further enhancements could come by coupling this with a two-dimensional surge model and including models that account for erosion processes, effects on structures, and variations in elevation. ...

January-February GSA Bulletin media highlights

... the elemental cycles of iron and silica were coupled in a fashion unseen in younger deposits, and furthermore that a better understanding of this coupling might offer unique insights in the origin of these rocks. The study by Fischer et al. used material from a well-preserved about 2.7-2.5 billion year ...

Newly found enzymes may play early role in cancer

... they work improperly, can we find ways to shut them off and prevent these mutations?" The enzymes leading to DNA demethylation involve the coupling of a 5-meC deaminase enzyme, a G:T glycosylase enzyme and Gadd45, which is not an enzyme. ...

Uncovering secrets of life in the ocean

... of its larva is probably the closest we can get to figuring out what eyes looked like when they first evolved." It is likely that the close coupling of light sensor to cilia marks an important, early landmark in the evolution of animal eyes. Many contemporary marine invertebrates still employ the ...

Evolution's new wrinkle

... with the positive feedback part of the cycle, however, and it is instructive that through optimal control theory Chakrabarti et al. can now suggest a coupling of causalities at the molecular level that extends Wallace's systems-oriented approach to this arena." Evolution, the central theory of modern ...

Sedimentary records link Himalayan erosion rates and monsoon intensity through time

... 8 to 10 million years caused a change in precipitation patterns that was not recorded in East Asia." Another controversy surrounds the degree of coupling between the South and East Asian monsoons. Could one have varied in intensity differently from the other? The team compared the South China Sea ...

Biophysical Society selects 2009 Distinguished Service, Emily M. Gray and Society Fellow recipients

... Donald M. Bers, University of California, Davis, for his contributions to the field of cellular and molecular biology of excitation contraction and coupling in the heart; Betty Gaffney, Florida State University, for being in the investigative forefront of spin labeling technology and electron ...

Scientists trace molecular origin of proportional development

... that go beyond the boundaries set up by its target Hunchback. Dr. Ma's team suggests that Bicoid can self correct its positional errors through a coupling that develops between Bicoid's forming gradient and the protein's activation of target genes. The correction essentially fine tunes the mechanism to ...

Scientists identify a molecule that coordinates the movement of cells

... the focal adhesions at the cell's periphery. Among the cargo transported along microtubules are factors that disassemble focal adhesions. Hence by coupling microtubule, actin and focal adhesion dynamics within the cell, ACF7 becomes an orchestrator of directed cellular movement." In particular, Wu ...

MIT: Preventing forest fires with tree power

... 'potato batteries' common in high school science labs, http://en.wikipedia.org/wiki/Lemon_battery ). The team also ruled out the source as due to coupling to underground power lines, radio waves or other electromagnetic interference. Testing of the wireless sensor network, which is being developed by ...

New technique sees into tissue at greater depth, resolution

... DURHAM, N.C. By coupling a kicked-up version of microscopy with miniscule particles of gold, Duke University scientists are now able to peer so deep into living tissue that ...

Petascale climate modeling heats up at University of Miami

... coupled modeling problems in other science and engineering fields, particularly the geosciences, and can inform the long-range design plans of other coupling tools and frameworks. ...

Genomics of large marine animals showcased in the biological bulletin

... Cell-cell adhesion in the Cnidaria: Insights into the evolution of tissue morphogenesis, by Craig R. Magie and Mark Q. Martindale coupling metabolite flux to transcriptomics: Insights into the molecular mechanisms underlying primary productivity by the hydrothermal vent tubeworm Ridgeia ...

NASA presentations at American Geophysical Union Joint Assembly

... were observed on a number of occasions by lidar instrumentation on board two aircraft during the recent Tropical Clouds, Chemistry, and Climate coupling (TC4) experiment. ...

Berkeley researchers identify photosynthetic dimmer switch

... cations. Furthermore, it appears that this conformational change is reversible, which opens the possibility of being able to tune the electronic coupling between the chlorophylls and thereby modulate the energy of the chlorophylls-zeaxanthin charge-transfer state. In other words, they should be able to ...

Emissions irrelevant to future climate change?

... succeed in slowing down the rate of emissions, the peak would be reached much later. However, a steep increase in emissions would bring the peak in coupling between climate and carbon emissions even closer. The authors suggest that we are heading inexorably towards the saturation peak, irrespective of ...

Tracking stroke

... temporal relation might be altered in stroke patients with possible new diagnostical insights. The quantitative characterization of neuro-vascular coupling has another important application: Functional magnetic resonance imaging (fMRI) relies on vascular changes, whereas electro- and ...

ESF's European ice core project EPICA receives prestigious Descartes Prize

... any historical comparison, leading to climate change at an unprecedented rate. In addition, the ice cores allowed scientists to study in detail the coupling of the northern and southern hemisphere. The prize has come at a very important time as we are currently in the International Polar Year (IPY), ...

Root or shoot? EAR calls the shots

... auxins are found throughout the whole plant, BODENLOS is only active in the shoot, ensuring that no accidental roots sprout above ground. The coupling of TOPLESS to BODENLOS provides an elegant mechanism for the plant to control the activity of auxin-responsive genes, says Long. ...

Trainor Lab characterizes gene essential for prenatal development of nervous system

... neurogenesis. They established that Cux2 directs neuroblast development, neuronal differentiation, and cell-fate determination in the spinal cord by coupling progression through the cycle of cell division with differentiation of neural cells by direct activation of two key neurogenic determinants, Neurod ...

Using fMRI to study brain development

... an indirect readout of brain activity, based on changes in the brains blood supply. Increases in brain activity cause increased blood flow, but the coupling mechanism that links these two processes is itself subject to change in early life. Thus, a weak fMRI signal in young animals could mean less neural ...

December GEOLOGY and GSA TODAY media highlights

... the marine photic zone euxinia, the faunal mass extinction, and the cyanobacterial expansion all occurred as two episodes, showing a close coupling among the ocean, the atmosphere, and the land system at that time. In particular, Xie et al. found that the first episode occurred before the ...

New technique captures chemical reactions in a single living cell at unprecedented resolution

... to millions of cells to fish out enough of the target molecule for detection." The researchers came up with a novel solution to this problem by coupling biomolecules, the protein cytochrome c in this study, with tiny particles of gold measuring 20-30 nanometers long. The electrons on the surface of ...

Hearing changes how we perceive gender

... to process gender information, Grabowecky said. Unlike stereotypical voices, the tones only hinted at male and female characteristics, and by coupling them with ambiguous faces, we were able to see how processing of various pitches affected vision very early in the sensory process. The study ...
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(Date:9/23/2014)... EdmontonCleaning up oil sands tailings has just gotten a ... University of Alberta civil engineering professors that uses solar ... , Instead of using UV lamps as a light ... retained in tailings ponds, professors Mohamed Gamal El-Din and ... a renewable energy source treats the wastewater just as ...
(Date:9/23/2014)... more carbon than the atmosphere and small changes ... effect on atmospheric greenhouse gas concentrations. A new ... concludes that climate warming does not accelerate ... storage, despite increases in ecosystem productivity. , ... Ecologist Dr. Christian Giardina, with the agency,s Institute ...
(Date:9/23/2014)... West Orange, NJ. September 23, 2014. Kessler Foundation ... of a foot drop stimulator during a task-specific ... system. This finding indicates that applying the foot ... from this common complication of stroke. "EMG of ... utilization of a foot drop stimulator," was published ...
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