Researchers at Rice Univ. and the Univ. of Texas MD Anderson Cancer Center have received a $1.3 million grant from the National Institutes of Health to create processes that will look more deeply than ever into the protein networks that drive cells. The four-year grant will enable a collaboration on new ways to see and evaluate the mechanisms that give cells their shapes and prompt them to change and move.
Computer simulations conducted at Lawrence Berkeley National Laboratory could help scientists make sense of a recently observed and puzzling wrinkle in one of nature’s most important chemical processes. It turns out that calcium carbonate may momentarily exist in liquid form as it crystallizes from solution.
The evolution of fluid drops deposited on solid substrates has been a focus of large research effort for decades, and most recently it has focused on nanoscale properties. Two New Jersey Institute of Technology researchers are the first to demonstrate that simulations based on continuum fluid mechanics can explain the nanoscale dynamics of liquid metal particles on a substrate.
A recent study in the U.K. investigated the electrical conductivity of a solid electrolyte, a system of positive and negative atoms on a crystal lattice. Computer simulations performed using this model have revealed how the electrical conductivity of many materials increases with a strong electrical field in a universal way. The discovery could significant implications for future materials and chemistry research.
A new facility at Idaho National Laboratory is helping nuclear power plant operators like Duke Energy embark on an upgrade projects for their control rooms. The new Human System Simulation Laboratory (HSSL) is a full-scale virtual nuclear control room that can test the safety and reliability of proposed technology replacements before they are implemented in commercial nuclear control rooms.
One of the major driving forces for developing new sensors and detectors is in medical applications. This includes the integration of fiber optic sensors, smart sensors, silicon micromachined sensors and thin-film devices. Smart sensors are devices that incorporate electronic logic, control or signal processing functions and therefore offer enhanced measurement capabilities, information quality and functional performance.
Wall turbulence develops when fluids—liquid or gas—flow past solid surfaces at anything but the slowest flow rates. Progress in understanding and controlling wall turbulence has been somewhat incremental because of the massive range of scales of motion involved, but recently engineers in the U.S. and the U.K. have developed a new and improved way of looking at the composition of turbulence near walls.
Nanoscientists who recently created beautiful, tiled patterns with flat nanocrystals faced a mystery: Why did crystals arrange themselves in an alternating, herringbone style, even though it wasn’t the simplest pattern? Help from computer simulations have given them a new tool for controlling how objects one-millionth the size of a grain of sand arrange themselves into useful materials.
The Powerwall Theater (PWT) at Los Alamos National Laboratory is an innovative facility that enables researchers to view the complex models and simulations they have created using some of the world’s fastest supercomputers. Recently, PWT was upgraded with 40 double-stacked Christie Mirage 3-D LED projectors that will provide seamless, integrated 3-D visualization.
Taking advantage of the power of cloud computing, researchers have simulated almost every important configuration of cloth. Though computing all the ways cloth can move would be impossible, the 4,554 CPU hours and 33 GB of data generated represents an ambitious effort to improve graphics for next-generation computer games.
Random lasers are tiny structures emitting light irregularly into different directions, giving them a unique signature, like a fingerprint. Scientists in Austria have now shown that these exotic light sources, which differ greatly from conventional mirrored lasers, can be accurately controlled.
The Ranger supercomputer in Texas has recently been used to determine how to sculpt fluid flows by precisely placing tiny pillars in microfluidic channels. By altering fluid speed and stacking pillars, a wide arrays of controlled flows can be achieved. This could be a boon for clinicians who would like to separate white blood cells in a sample, or more quickly perform lab-on-a-chip-type operations.
The Consortium for Advanced Simulation of Light Water Reactors (CASL) announced that its scientists have successfully completed the first full-scale simulation of an operating nuclear reactor. CASL is modeling nuclear reactors on supercomputers to help researchers better understand reactor performance, with the goal of ultimately increasing power output, extending reactor life and reducing waste.
In spite of the tremendous progress made over the last 80 years, important gaps in our understanding of the hydrogen phase diagram remain, with arguably the most challenging issue being the solid-to-liquid melting transition at ultra-high pressures. A new study in the U.K. has looked at the melting of hydrogen by computer simulation, for the first time taking the quantum motion of the protons into account explicitly.
Computer science researchers have programmed a computer to play the game Concentration (also known as Memory). The work could help improve computer security and improve our understanding of how the human mind works. The researchers developed a program to get the software system called ACT-R, a computer simulation that attempts to replicate human thought processes, to play Concentration.
According to NASA, there are more than 21,000 pieces of “space junk roughly the size of a baseball in orbit, and about 500,000 pieces that are golf ball-sized. These pieces can be dangerous, which is why researchers at Texas Advanced Computing Center’s supercomputers are simulating orbital debris impacts on spacecraft and fragment impacts on body armor to help NASA design better shielding.
The National Institute of Standards and Technology this week announced that it plans to establish a new Advanced Materials Center of Excellence to facilitate collaborations between NIST and researchers from academia and industry on advanced materials development. Fund at about $25 million over five years, the center will emphasize innovations in measurement technology, modeling, simulation, and data and informatics tools
How do fish swim? It is a simple question, but there is no simple answer. Researchers at Northwestern Univ. have revealed some of the mechanical properties that allow fish to perform their complex movements. Their findings could provide insights in evolutionary biology and lead to an understanding of the neural control of movement and development of bio-inspired underwater vehicles.
JMAG is a powerful finite element analysis (FEA) tool that allows engineers to develop, analyze, and fine-tune electric motors and generators, taking into account such diverse factors as thermal, structural, and vibration issues. This week, Maplesoft has launched a new product that allows users to combine JMAG with the advanced physical modeling approach of MapleSim. This allows engineers to produce high-fidelity system models.
The first successful modeling of fluid and gas flows was accomplished by the aerospace industry, which recognized the advantages such understanding could have for successful aircraft design. Now, the once exotic application of Navier-Stokes equations for the modeling of flows is performed on just about anything, from the world’s largest hydropower plant to a mundane rear-view mirror on a car.
Researchers report that they have determined the precise chemical structure of the HIV capsid, a protein shell that protects the virus’s genetic material and is a key to its virulence. The capsid has become an attractive target for the development of new antiretroviral drugs. The researchers used the University of Illinois’ supercomputer Blue Waters to determine the complete HIV capsid structure.
When a solar flare filled with charged particles erupts from the sun, its magnetic fields sometimes break a widely accepted rule of physics. The flux-freezing theorem dictates that the magnetic lines of force should flow away in lock-step with the particles, whole and unbroken. Instead, the lines sometimes break apart and quickly reconnect in a way that has mystified astrophysicists.
Leading nanoscientists created beautiful, tiled patterns with flat nanocrystals, but they were left with a mystery: Why did some sets of crystals arrange themselves in an alternating, herringbone style? To find out, they turned to experts in computer simulation at the University of Michigan and the Massachusetts Institute of Technology.
Scientists have long observed that species seem to have become increasingly capable of evolving in response to changes in the environment. But computer science researchers now say that the popular explanation of competition to survive in nature may not actually be necessary for evolvability to increase.
Scientists at Lawrence Livermore National Laboratory and the University of California, Berkeley have discovered new materials to capture methane, the second highest concentration greenhouse gas emitted into the atmosphere. The research team performed systematic computer simulation studies on the effectiveness of methane capture using two different materials—liquid solvents and nanoporous zeolites.