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37 articles from PhysOrg

Bottles made of lignocellulose, perfumes made from apples

Many companies are working on materials that would be as light and resistant as plastic but at the same time fully biodegradable. What if they could be made from... rubbish? A modern, ecological (waste-free—the conversion of raw material to product reaches 100%) and economical (does not require high temperatures or expensive catalysts) method of obtaining organic monomers is coming into being at...

Research using mechanics and physics could predict diseases that 'stress out' cells

Researchers at the NYU Tandon School of Engineering have discovered a new way to identify the state of individual cells by bringing principles of mechanical engineering and physics to bear on processes that are now well understood at the macro level, but not yet at the cellular level: how stressors such as injury and disease force an organism into a new level of equilibrium—a biological process...

Scientists uncover mystery of DNA methylation

All species mark their DNA with methyl groups. This is done to regulate gene expression, distinguish indigenous DNA from foreign DNA, or to mark old DNA strands during replication. Methylation is carried out by certain enzymes called methyltransferases, which decorate DNA with methyl groups in certain patterns to create an epigenetic layer on top of DNA.

New artificial compound eye could improve 3-D object tracking

If you've ever tried to swat a fly, you know that insects react to movement extremely quickly. A newly created biologically inspired compound eye is helping scientists understand how insects use their compound eyes to sense an object and its trajectory with such speed. The compound eye could also be used with a camera to create 3-D location systems for robots, self-driving cars and unmanned aerial...

Lithium fluoride crystals 'see' heavy ions with high energies

Lithium fluoride crystals have recently been used to register the tracks of nuclear particles. Physicists from the Institute of Nuclear Physics of the Polish Academy of Sciences in Cracow have just demonstrated that these crystals are also ideal for detecting tracks of high-energy ions of elements even as heavy as iron.

Burning invasive western juniper maintains sagebrush dominance longer

Burning invasive western juniper increases the time—post-fire—that native mountain sagebrush will remain the dominant woody vegetation in the plant community by at least 44 percent compared to cutting juniper back, according to a new study in Ecology and Evolution by Agricultural Research Service (ARS) scientists and their collaborators.

How NASA is becoming more business friendly

A new case study demonstrates the steps being taken by the U.S. National Aeronautics and Space Agency (NASA) to make it easier for small businesses and entrepreneurs to understand its needs and do business with it. The detailed case study, which provides insights on the design, results, and lessons learned from these efforts, is published in New Space: The Journal of Space Entrepreneurship and...

Scientists co-author Edwards Aquifer memoir

Three Southwest Research Institute scientists contributed their groundwater management expertise to a new book about the Edwards Aquifer, the primary water source for the San Antonio area and surrounding communities. The 27-chapter memoir, titled "The Edwards Aquifer: The Past, Present and Future of a Vital Water Resource" and published by the Geological Society of America (GSA), compiles research...

A laser-driven programmable non-contact transfer printing technique

A laser-driven programmable non-contact transfer printing technique via an active elastomeric micro-structured stamp, which offers continuously thermal-controlled tunable adhesion with a large switchability of more than 103 at a temperature increase below 100 °C, is developed. This innovative technique creates engineering opportunities in a wide range of applications such as flexible electronics,...

Microorganisms build the best fuel efficient hydrogen cells

For all the advances technology has made throughout our lives, in many cases it stands behind what nature can do. Ants can carry 5000 times their weight, and spider webs are five times stronger than steel. Fuel efficiency is no different. In a new stud in Angewandte Chemie International Edition, researchers from Nara Institute of Science and Technology (NAIST) report new details on the proton...

Scientists complete LSST's digital sensor array

After 16 years of dedicated planning and engineering, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have completed a 3.2 gigapixel sensor array for the camera that will be used in the Large Synoptic Survey Telescope (LSST), a massive telescope that will observe the universe like never before.

Uncertainty in emissions estimates in the spotlight

National or other emissions inventories of greenhouse gases that are used to develop strategies and track progress in terms of emissions reductions for climate mitigation contain a certain amount of uncertainty, which inevitably has an impact on the decisions they inform. IIASA researchers contributed to several studies in a recently published volume that aims to enhance understanding of...