Supplied with sufficient energy, a freight train would ride the rails as far as they go. But nature also knows systems whose dynamics suddenly turn into a kind of endless loop. Like in a hamster wheel, a train caught up in ...
Cell & Microbiology
Nov 15, 2011
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Every so often we hear about a new strain of influenza virus which has appeared and in some cases may sweep across the globe in a pandemic, much as the H1N1 virus did last year. What happens to the old seasonal viruses? In ...
Cell & Microbiology
Nov 14, 2011
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A new method for visualizing mechanical forces on the surface of a cell, reported in Nature Methods, provides the first detailed view of those forces, as they occur in real-time.
Biochemistry
Nov 9, 2011
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Even without eyes, many single-celled organisms can perceive and react to light. This is achieved via rhodopsins, proteins at the cell surface that trigger responses to specific wavelengths of light by directing the flow ...
Cell & Microbiology
Nov 4, 2011
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Nanoparticles of a substance can be counted and the size distribution can be determined by dispersing the nanoparticles into a gas. But some nanoparticles tend to aggregate when the surrounding conditions change. Scientists ...
Bio & Medicine
Oct 11, 2011
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Many substances and nutrients are exchanged across the cell membrane. EPFL scientists have developed a method to observe these exchanges, by taking a highly accurate count of the number of proteins found there. Their research ...
Cell & Microbiology
Jul 27, 2011
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Powdery mildew is a tricky pathogen: The fungus can manipulate barley in a way that it is not only granted entry into the plant, but also gets the plant's cells to supply it with nutrients. A team of researchers at Technische ...
Biotechnology
Jul 12, 2011
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(PhysOrg.com) -- The initial entry of HIV-1 into host cells remains a compelling yet elusive target for the development of agents to prevent infection, a critical need in the fight against the global AIDS epidemic.
Biochemistry
Jul 8, 2011
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(PhysOrg.com) -- More than 50 years ago, NYU-Poly alumni John Gilbert was asked to evaluate a newly- developed material called Teflon. His experiments using the fluorinated polymer as a surface coating for pots and pans helped ...
Biochemistry
Jul 4, 2011
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(PhysOrg.com) -- Joshua Shaevitz, an assistant professor from the Department of Physics and the Lewis-Sigler Institute for Integrative Genomics at Princeton University, along with Mingzhai Sun, a postdoctoral associate at ...
Cell & Microbiology
Jun 13, 2011
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