More computers discarded by consumers in the United States are getting a second life in developing countries than previously believed, according to a new study –– the most comprehensive ever done on the topic –– reported in ACS' semi-monthly journal Environmental Science & Technology. The findings may ease growing concerns about environmental pollution with toxic metals that can result from dismantling and recycling computer components in developing countries.
The rocking frames are steel braced-frames, the columns of which are free to rock up and down within steel "shoes" secured at their base. To control the rocking and return the frame to vertical when the shaking stops, steel tendons run down the center of the frame from top to bottom. These tendons are made of high-strength steel cable strands twisted together and designed to remain elastic during shaking. When shaking is over, they rebound to their normal length, pulling the building back into proper alignment.
Johns Hopkins engineers have devised computer software that can sift through hundreds of genetic mutations and highlight the DNA changes that are most likely to promote cancer. The goal is to provide critical help to researchers who are poring over numerous newly discovered gene mutations, many of which are harmless or have no connection to cancer. According to its inventors, the new software will enable these scientists to focus more of their attention on the mutations most likely to trigger tumors.
WEST LAFAYETTE, Ind. - Going back to the drawing board is much easier now that researchers have developed a new type of design program called FEAsy.
The program allows the designer to sketch a rough concept of the part and then analyze the part's characteristics while it is still only a drawing, said Karthik Ramani, a professor of mechanical engineering at Purdue University.
The concept represents a departure from conventional design methods, in which engineers use a painstaking procedure called finite-element analysis to test designs, he said.
(Boston) In its quest to find new strategies to treat osteoarthritis and other diseases, a Boston University-led research team has reported finding a new computer tomography contrast agent for visualizing the special distributions of glycosaminoglycans (GAGs) – the anionic sugars that account for the strength of joint cartilage.
Assessing the local variations in GAGs are of significant interest for the study of cartilage biology and for the diagnosis of cartilage disease like osteoarthritis, which afflicts more than 27 million in people in the United States
Lakes in Antarctica, concealed under miles of ice, require scientists to come up with creative ways to identify and analyze these hidden features. Now, researchers using space-based lasers on a NASA satellite have created the most comprehensive inventory of lakes that actively drain or fill under Antarctica's ice. They have revealed a continental plumbing system that is more dynamic than scientists thought.
A new method for "recycling" hydrogen-containing fuel materials could open the door to economically viable hydrogen-based vehicles.
In an article appearing today in Angewandte Chemie, Los Alamos National Laboratory and University of Alabama researchers working within the U.S. Department of Energy's Chemical Hydrogen Storage Center of Excellence describe a significant advance in hydrogen storage science.
In order to achieve control over single electrons in a group, ultrashort light pulses of a few femtoseconds duration are needed. Physicists of the Max Planck Institute of Quantum Optics (MPQ) in Garching and chemists of the Ludwig-Maximilians-Universität (LMU) in Munich succeeded for the first time at using light for controlling single, negatively charged elementary particles in a bunch of electrons. The scientists achieved a major milestone that they aimed for within the excellence cluster "Munich Center for Advanced Photonics" (MAP).
Gene therapy holds promise in the treatment of a myriad of diseases, including cancer, heart disease, and diabetes. However, developing a scalable system for delivering genes to cells both efficiently and safely has been challenging.
Now a team of Northwestern University researchers has introduced the power of nanodiamonds as a new gene-delivery technology that combines key properties in one approach: enhanced delivery efficiency along with outstanding biocompatibility. The results are published in the journal ACS Nano
What do hide-and-seek, police searches, and video games such as Half-Life 2 have in common? More than you would think, say two University of Alberta researchers.
Experimental psychologist Marcia Spetch and computer scientist Vadim Bulitko, recently published an article in Learning and Motivation, and are using their research to understand the reasoning and decision-making process involved in hiding and searching for objects. They hope it will lead to more realistic game environments and, one day, advanced search-enhancing tools for law enforcement.