and social-ecological dynamics in the Amazon says Marty Downs associate director of Brown University's Environmental Change Initiative.
Using a high-resolution transmission microscope in Brookhven's Condensed Matter Physics and Materials Science Department the scientists were able to observe the anchored Mosoy nanocrystals on 2d graphene sheets.
Mapping these kind of dynamics provides vital information about the diseases and how they are transmitted said Abdou Razac Boukary about his doctoral research at ITM and the University of Liã ge (Ulg).
which have been exposed to ultraviolet light and contain vitamin D2 are a good source of Vitamin d that can improve the Vitamin d status of healthy adults.
Many of these discoveries were made at Washington University home to Ernst Zinner Phd research professor in Physics at Washington University in St louis who helped develop the instruments
The first silica grains are discovered In 2009 Christine Floss Phd research professor of physics at Washington University in St louis
A University of Leeds-led team of virologists and structural biologists used X-ray crystallography and electron microscopy to decipher the three-dimensional shape of the nucleocapsid protein
A paper on the subject was published today in the new online science and biomedical journal elife a joint initiative of the Howard Hughes Medical Institute the Max Planck Society and the Wellcome Trust fund.
and natural habitats as well as a team of park rangers enforcing conservation laws that --although they had been in place
Researchers of the Max Planck Institute for Evolutionary Anthropology in Leipzig Germany have investigated now which strategies chimpanzees in the Taã National park in CÃ'te d'Ivoire West Africa use
and abstract thinking in humans says Christophe Boesch director of the Max Planck Institute for Evolutionary Anthropology's Department of Primatology.
The above story is provided based on materials by Max-Planck-Gesellschaft. Note: Materials may be edited for content and length.
but do not yet stop them as effectively as real leaves Loudon said suggesting that crucial mechanics of the trichomes still need to be determined.
when activated by weak ultraviolet light. By keeping the intensity of the UV light sufficiently low researchers can photoactivate individual proteins to image them
They do however receive a great deal of infrared light which is harmful to some crops and yellow light
In the development of the method a spectrometer is used to measure which wavelengths are sent back by the plants.
and other advantages has fostered interest in using it in everything from lightweight armor and ballistic glass to wound dressings and scaffolds for growing replacement organs for transplantation.
Researchers from the Max Planck Institute for Ornithology in Seewiesen have examined whether the presence of an audience influences the behaviour and the testosterone changes of Japanese quails (Coturnix japonica) after a fight.
With support of the Alexander-Von-humboldt Society scientists working with Katharina Hirschenhauser from the Max Planck Institute for Ornithology in Seewiesen have been studying the influence of mixed-sex audiences on future social status after a fight.
The above story is provided based on materials by Max Planck Institute for Ornithology. Note: Materials may be edited for content and length.
The campaign is addressing a broad range of science questions from the dynamics of Earth's crust and glaciers to the carbon cycle and the lives of ancient Peruvian civilizations.
As for how this happened the prevailing theory holds that massive stars in the early galaxies produced an abundance of high-energy ultraviolet light that escaped into intergalactic space.
It's critical to understand the population dynamics in a given area in order to make informed decisions regarding management said WCS Conservation Scientist Jon Beckmann.
Calculations by the Rice team of theoretical physicist Boris Yakobson and his colleagues in China were reported this month in the American Chemical Society journal Nano Letters.
They determined through molecular dynamics simulation and good old mathematical analysis that in a graphene quilt the grain boundaries act like levers that amplify the tension (through a dislocation pileup) and concentrate it at the defect either where the three domains meet or where a grain boundary between two domains ends.
It's one of the pillars of large-scale material mechanics he said. For graphene we call this a pseudo Hall-Petch
Co-authors of the paper are graduate student Zhigong Song and his adviser Zhiping Xu an associate professor of engineering mechanics at Tsinghua.
and the electromagnetic interactions between them that make up ionized matter. High performance computers such as Sequoia enable these codes to follow the simultaneous evolution of tens of billions to trillions of individual particles in highly complex systems.
Frederico Fiuza a physicist and Lawrence Fellow at LLNL performed the simulations in order to study the interaction of ultra-powerful lasers with dense plasmas in a proposed method to produce fusion energy the energy
Each simulation evolves the dynamics of more than 100 billion particles for more than 100000 computational time steps.
If kinship-based social dynamics were playing a critical role in these pilot whale strandings first we would expect to find that the individuals in a stranding event are in fact all related to each other.
Bucinell's particular expertise is in experimental mechanics and the mechanics of reinforced materials and is tasked with seeing how strong sample material is under different parameters.
This includes determining whether mycelia bind better to one plant material or another; and does the way it's treated--with heat
and molecular dynamics looking back to when proteins first appeared approximately 3. 8 billion years ago to determine changes in folding speed over time.
If we mix the world of molecular dynamics with the world of molecular evolution we can then determine what aspects of sequences are important for molecular dynamics
which govern the multiphase gas-liquid-ice environment the model incorporates the dynamics and effects of thawing sap dissolving gas bubbles and an osmotic pressure gradient between two components (vessels and fibers) in the tree's nonliving vascular tissue.
A team led by Rice physicist Ching-Hwa Kiang found that shear forces like those found in small arteries of patients with atherosclerosis cause snippets of nonclotting VWF to change into a clot-forming shape for hours at a time.
Kiang associate professor of physics and astronomy and of bioengineering studies the forces involved in protein folding.
In this way we were able to study the dynamics of the molecule to see how it changed over a period of time.
Heating it up in the absence of oxygen--pyrolysis--breaks it down into smaller fragments that can be read by a molecular beam mass spectrometer.
HTAP integrates a molecular beam mass spectrometer with the pyrolysis unit to quickly determine chemical signatures (phenotypes) on small amounts of biomass samples that can be used for among other things identifying the genes controlling the chemical makeup.
Samples drop into the oven where the pyrolysis creates a vapor that is read by the mass spectrometer--a chemical fingerprint.
We put the samples in our mass spectrometer which looked at their genetic transformations and the associated cell-wall chemistry changes Davis said.
NREL's pyrolysis combined with a mass spectrometer was a big improvement over the old method of using wet chemistry to analyze
and fabricate the molecular beam mass spectrometer and Frontier Laboratories which provided the pyrolysis instrument. NREL scientists integrated the autosampler pyrolyzer
and molecular beam mass spectrometer to make HTAP. Other partners using NREL's rapid analytical tool for fuel research besides Arborgen are the University of Florida the University of Georgia Greenwood Resources the Bioenergy Science Center
and Oak ridge National Laboratory Spectrometer Reads the Chemical Fingerprints of the Samplesthe spectrometer's readings are translated into graphs that show single peaks that are easily identifiable phenotypes from
Dr. Stephen Blake of the Max Planck Institute says: Forest elephants need two things: they need adequate space in
) Dian Fossey Gorilla Foundation International the Jane Goodall Institute Lukuru Foundation Zoological Society of London Fauna and Flora International Max Planck Institute San diego
Operation Loango Prince Bernhard Wildlife Fund RAPAC The Arcus Foundation The Aspinall Foundation The Born Free Foundation The Institute for Biodiversity and Ecosystem Dynamics at The University of Amsterdam
and composition increased human wildlife conflicts new predator-prey dynamics and decreased biotic integrity (a measure of how pristine a wildlife community is).
Post said that the next step in his research will be to study the contribution of plant diversity to long-term stability of carbon dynamics in the atmosphere and in the soil.
Within 25 years practically no ash trees may remain on either side of the St lawrence Seaway said Akhlesh Lakhtakia Charles Godfrey Binder Professor of Engineering science and Mechanics at Penn State.
Spectral analysis a method of analyzing the electromagnetic radiation coming from plants and other objects is being used in the K-State Agronomy Department to determine the level of photosynthetic activity of vegetation in many different situations.
and Nathan Keep used a ground-based spectroradiometer to gather spectral data in the visible and infrared spectra at various stages of growth
The team looked at the dynamics of water availability to the trees by examining the ratio of oxygen isotopes in the sap contained in the tree veins that transport water.
Grants from the Biocomplexity and Human-Social Dynamics programs at the National Science Foundation supported the research.
These newly formed pickup ions begin to gyrate around the local interstellar magnetic field just outside the solar system.
In the regions where the magnetic field is perpendicular to their initial motion they scatter rapidly
Using information provided by this new model future studies of the ribbon could help determine the properties of the nearby galactic magnetic field opening a window into the physics of the nearby galactic medium.
In addition the IBEX ribbon could provide researchers with a means for measuring the strength of the interstellar magnetic field as well as its direction.
In 1873 German physicist Ernst Abbe worked out the mathematics to improve resolution in light microscopes.
But Abbe's calculations also established the optical version of the sound barrier: the diffraction limit an unavoidable spreading of light.
Using REMO the regional climate model of the Max Planck Institute for Meteorology researchers tested
so you could do some real work said Rice university theoretical physicist Boris Yakobson chuckling at the absurd image.
which might bring in lots of new physics and chemistry especially on the nanoscale. For example 2-D boron is more conductive than graphene because of its unique electronic structure and atomic arrangement.
but when it is increased due to solar radiation the gradient increases. For the same average global surface temperature increase the weaker SST gradient produces less rainfall especially over tropical land says co-author Bin Wang professor of meteorology.
thus reducing the usual SST gradient--a situation similar to El Niã o. Solar radiation on the other hand heats Earth's surface increasing the usual temperature difference between the surface
) This research was supported by the U s. Air force Office of Scientific research Multidisciplinary University Research Initiative by the UK Engineering and Physical sciences Research Council and through a postdoctoral research fellowship from the Alexander Von humboldt Foundation.
and the Max Planck Institute for Biogeochemistry Germany. This study was funded by the U s. Department of energy's Office of Science and the National aeronautics and space administration.
Famiglietti an Earth system science professor in the School of Physical sciences and colleague Min-Hui Lo a postdoctoral researcher at the University of California Center for Hydrologic Modeling who is now at National Taiwan
dynamics problem--the prediction of noise generated by a supersonic jet engine. Joseph Nichols a research associate in the center worked on the newly installed Sequoia IBM Bluegene/Q system at Lawrence Livermore National Laboratories (LLNL) funded by the Advanced Simulation and Computing (ASC) Program of the National
Because of Sequoia's impressive numbers of cores Nichols was able to show for the first time that million-core fluid dynamics simulations are possible
The physics of noisethe exhausts of high-performance aircraft at takeoff and landing are among the most powerful human-made sources of noise.
The data gleaned from these simulations are based driving computation scientific discovery as researchers uncover the physics of noise.
More cores more challengescomputational fluid dynamics (CFD) simulations like the one Nichols solved are incredibly complex.
A focused ion beam system was used later to create even finer patterns down to 100-nanometer resolution without masks.
Though intensively studied for decades until now an understanding of bark beetle population dynamics--extreme ups and downs--has remained elusive.
and for predators that eat both beetle species. The authors suggest that other pest species with catastrophic impacts may also have natural dynamics that include a tipping point between the bipolar population states.
and department chair of physics and astronomy at Rice. This is the first time anyone has arranged these four cell types in the same way that they are found in lung tissue.
The international research project is led by researchers from the Niels Bohr Institute and the very important results are published in the scientific journal Nature.
The new results from the NEEM ice core drilling project in northwest Greenland led by the Niels Bohr Institute at the University of Copenhagen show that the climate in Greenland was around 8 degrees C warmer than today during the last interglacial
which indicates that the contribution from the Greenland ice sheet was less than half the total sea-level rise during that period says Dorthe Dahl-Jensen Professor at the Niels Bohr Institute University of Copenhagen and leader of the NEEM-project.
or NEEM led by the Niels Bohr Institute is an international project with participants from 14 countries.
The new findings show higher temperatures in northern Greenland during the Eemian than current climate models have estimated says Professor Dorthe Dahl-Jensen Niels Bohr Institute.
The satellite data were collected by the Tropospheric Emission Spectrometer instrument on NASA's Aura spacecraft. When it comes to reducing ozone levels emission reductions in one part of the world may drive greenhouse warming more than a similar level of emission reductions elsewhere said Bowman lead author of the study published recently in the journal Geophysical Research Letters.
The model simulations are based upon actual observations of ozone warming effects measured by NASA's Tropospheric Emission Spectrometer satellite instrument.
The above story is provided based on materials by Institute of Physics. Note: Materials may be edited for content and length.
Extreme weather potent force for Arctic overwintering populationsclimate change is known to affect the population dynamics of single species such as reindeer
and strong climate signals in the population dynamics of herbivores are the likely explanations for how such clear climate effects can be observed at the ecosystem level.
and the role wolves may play on population dynamics. The team's next steps will be to process data to understand more about climate change impacts on this high elevation ecosystem
and you actually see a standing wave pattern he said. It's a barrier so they have to go up and over that hill.
or when the skin is exposed to the sun's ultraviolet rays. Lighter skin produces more Vitamin d than darker skin colours.
For a 2012 study in the Journal of Proteome Research the scientists used nuclear magnetic resonance spectroscopy to study the amino acid composition of juice from oranges grown on HLB-positive or HLB-negative trees.
Our results indicate a rapidly retreating coastline that cannot be accounted for by the regular dynamics of the Sundarbans.
The experimental results were reported in the Royal Society of Chemistry journal Physical chemistry Chemical Physics. The discovery Tour said could be a boon in the cleanup of contaminated sites like the Fukushima nuclear plants damaged by the 2011 earthquake and tsunami.
What is astonishing is the very fast kinetics of sorption which is key. In the probabilistic world of chemical reactions where scarce stuff (low concentrations) infrequently bumps into something with
#Physics students disprove childrens author Roald Dahls peach calculationfour students from the University of Leicester Department of physics
The physics of aircraft was applied later to calculate the number of seagulls it would have taken for the giant peach to be lifted.
The research was conducted by Emily Jane Watkinson Maria-Theresia Walach Daniel Staab and Zach Rogerson and published in the Journal of Physics Special Topics.
The project allowed the students to apply real principles of Physics to an imaginative topic
But to be a research physicist--in industry or academia--you need to show some imagination to think outside the box
Because Physics Special Topics is run exactly like a professional journal the students get the chance to develop all the skills they will need
Schools have physics chemistry and biology laboratories to teach these subjects. The combination of Raspberry Pi and Piface creates a cheap personal laboratory for computer science that every child can own.
Overall he concluded the results of the study suggest that altered disturbance regimes rather than climate had the greatest influence on vegetation composition and dynamics in the eastern United states over multiple centuries.
Rebirth of the Elwha Riverfor rivers with fewer economic and social demands restoration guided by historical records of the natural dynamics of the river can be an effective restoration strategy say Acreman and colleagues.
In the lab you are just seeing part of the process of root growth said Bucksch who works in the group of Associate professor Joshua Weitz in the School of Biology and School of Physics at Georgia Tech.
However some of their most widespread threats involve warming ocean temperatures solar radiation and increased ocean acidification.
No coral reefs have been identified to date that protect from rising ocean temperatures acidification and increased solar radiation like these mangrove habitats in St john. Story Source:
Charge transport anisotropy is a phenomenon where electrons flow faster along a particular crystallographic direction due to close molecule-molecule interactions.
whereas an infrared camera was able to detect inflammatory alterations in the udder four hours after the inflammation had set in says Jutta Kauppi.
But sugars may also be part of a deadly game of tag between plant and insect according to scientists at the Max Planck Institute for Chemical Ecology.
The Max Planck scientists have discovered now why this defensive strategy fails to work against Spodoptera larvae.
and Jonathan Gershenzon from the Department of Biochemistry at the Max Planck Institute for Chemical Ecology in Jena Germany have discovered recently a previously unknown detoxification strategy in these pest insects.
Modern and highly sensitive mass spectrometry and nuclear magnetic resonance spectroscopy methods showed that the benzoxazinoid identified in the larval frass was no longer identical to the substance in the plant leaves.
The Max Planck scientists now want to identify the enzymes and the encoding genes that are responsible for the detoxification process in the fall armyworm.
The above story is provided based on materials by Max Planck Institute for Chemical Ecology. Note: Materials may be edited for content and length.
He and researchers at the Geophysical Fluid Dynamics Laboratory (GFDL)--which is operated by the National Oceanic
This understanding will help us make better forecasts for climate as well as for the basic dynamics of forests.
This helped us understand how the dynamics of individual trees influence the stand as a whole. The growth trends at stand level are relevant for the forestry industry in terms of productivity carbon sequestration
Specifically we coated a dead female beetle with a vapor of nickel and used the'nickelized'shell to fabricate two matching molds in the shape of a resting beetle said Akhlesh Lakhtakia Charles Godfrey Binder professor of engineering science and mechanics
and understand the dynamics in your system of interest which also means understanding other systems.
Giving scientists a framework to compare similar dynamics makes for more meaningful information for those developing
from now on we will have a much more detailed view of the dynamics of this ecosystem says Dusko Ehrlich.
The laws of physics are said non-negotiable Mr Jarraud. The Greenhouse Gas Bulletin provides a scientific base for decision-making.
which protects us from the harmful ultraviolet rays of the sun. Ocean Acidificationfor the first time this Bulletin contains a section on ocean acidification prepared in collaboration with the International Ocean Carbon Coordination Project (IOCCP) of the Intergovernmental Oceanographic Commission of UNESCO (IOC
Physicists find 2-D form pays no heed to defectsdefects damage the ideal properties of many two-dimensional materials like carbon-based graphene.
That makes it a promising candidate for nanoelectronic applications that require stable properties according to new research by Rice university theoretical physicist Boris Yakobson and his colleagues.
Andreas Huth have spent the last five years using computer models to analyse ecosystems to explore the composition and dynamics of species-rich communities in tropical rainforests.
since they generally reflect solar radiation back into space. Therefore a 50 percent reduction in forest aerosols has spurred actually greater warming since the pre-industrial era.
Called the Global Ecosystem Dynamics Investigation (GEDI) lidar the instrument will be the first to systematically probe the depths of the forests from space.
or death wasn't clear said Sylvia Wassertheil-Smoller Ph d. study senior author and distinguished university professor emerita department of epidemiology and population health at Albert Einstein College of Medicine
and models used here can be applied elsewhere to explore similar plant bed dynamics around the world.
They looked to a technique called nuclear magnetic resonance spectroscopy which has been used to authenticate foods including honey and olive oil.
which plant canopies convert solar radiation to biomass to estimate the theoretical limit of net primary production (NPP) on a global scale This newly calculated limit was roughly two orders of magnitude higher than the productivity of most current managed
Wildland fires involve complex interactions that include fuel distribution terrain topography chemical reactions energy transfer and the associated fluid dynamics that transport moisture gas-phase hydrocarbons air
burns to help develop models describing the chemistry and fluid dynamics of fires. His interest was sparked.
what is going to dictate the fluid dynamics in the vicinity. In turn the fluid dynamics of the air and combustible hydrocarbons as fire progresses could point the way to where the fire will spread.
The process begins with pyrolysis the thermochemical decomposition of organic material at elevated temperature Dr. Mahalingam says.
and the resulting fluid dynamics will in turn drive the fire. Continual warming of the leading edge of the fire is a necessary precondition to releasing the chemicals in the fuels that are needed to sustain it.
and hydraulics should both increase in drier areas. But Givnish and his team wanted to know the importance of each constraint.
which hydraulics retards photosynthesis. The isotopic composition should also remain stable if resource allocation alone sets maximum height because resource allocation does not directly affect the stomata.
Because it's so easy to accidently introduce impurities into graphene labs led by physicists Junichiro Kono of Rice
Hitting the combined material with femtosecond pulses from a near-infrared laser prompted the indium phosphide to emit terahertz back through the graphene.
Imperfections as small as a stray oxygen molecule on the graphene were picked up by a spectrometer.
and eggs and hawks are predominantly predators of adults these landscape changes could shift ecosystem dynamics.
Disturbances like windthrow and forest fires are part of the natural dynamics of forest ecosystems and are not therefore a catastrophe for the ecosystem as such.
Researchers at the Max Planck Institute of Molecular Cell biology and Genetics show that supplying D-lactate
Teymuras Kurzchalia and Tony Hyman both have labs at the Max Planck Institute of Molecular Cell biology
The above story is provided based on materials by Max-Planck-Gesellschaft. Note: Materials may be edited for content and length.
and they are the prime focus of study for Onuchic and his colleagues at Rice's Center for Theoretical Biological Physics (CTBP).
Researchers have observed long hemagglutinin's initial and final structures through X-ray crystallography. But because the change happens so quickly it has been impossible to capture an image of the glycoprotein in transit.
By using the experimental structural information from X-ray crystallography to approximate the full energy landscape of hemagglutinin the researchers can now capture a rough picture of the steps involved in its reconfiguration including the point at
. and Olga K. Wiess Professor of Physics and Astronomy and co-director of the CTBP based at Rice's Bioscience Research Collaborative.
A Rice university-led team of U s. German and Chinese physicists has published the first evidence based on sophisticated neutron measurements of a link between magnetic properties
The new findings are sophisticated based on inelastic neutron-scattering experiments performed on several samples of barium iron nickel arsenide at the PUMA triple axis spectrometer at TUM's Heinz Maier
The research team said they hope the findings will prove useful in explaining the underlying physics of directionally dependent electronic phenomena that have been observed in several different types of superconducting materials.
Most high-temperature superconductors and many closely related compounds exhibit a number of exotic electronic phases particularly as they approach the critical temperature where superconductivity arises said Pengcheng Dai professor of physics and astronomy at Rice and the study
Explaining high-temperature superconductivity remains the foremost challenge in condensed matter physics. First documented in 1986 the phenomenon is marked by zero electrical resistance in some crystalline ceramic materials below a critical temperature.
Physicists call directionally dependent behavior anisotropic resistance. In the new study Dai and colleagues bombarded crystals of barium iron nickel arsenide with neutrons.
and inelastic neutron-scattering tests allow physicists to see among others the vibrational properties of materials.
Rice theoretical physicist and study co-author Andriy Nevidomskyy assistant professor of physics and astronomy used the analogy of a crowd gathered at a stadium to watch a sporting event.
Rice theoretical physicist Qimiao Si another study co-author said the magnetic behavior observed by the inelastic neutron-scattering measurements reflects the way the spins of the electrons are organized dynamically in the material.
Professor of Physics and Astronomy. It may help explain the interplay between magnetism and superconductivity and more generally the mechanism for superconductivity in the iron pnictide superconductors.
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