Human noroviruses are the leading cause of acute gastroenteritis worldwide, a major global health problem for which there are no specific treatments or vaccines. Understanding the first phase of infection—the process the ...
Mar 2, 2023
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Researchers from the University of Seville and the Seville Institute of Biomedicine (IBiS), in collaboration with the University of Cambridge, have identified a new role for one of the genes related to hereditary spastic ...
Mar 27, 2023
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A nationwide Swedish study including more than 10,000 cases of cholesteatoma, a lesion in the middle ear, shows a strong hereditary component to the disease.
Mar 21, 2023
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The drug denosumab is currently used to treat osteoporosis and bone metastases. For more than a decade, its potential therapeutic benefit in the treatment of breast cancer has also been studied. However, due to conflicting ...
Mar 7, 2023
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A scientific instrument at the Department of Energy's Oak Ridge National Laboratory could help create a noninvasive cancer treatment derived from a common tropical plant.
Mar 6, 2023
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In the worst-case scenario, getting chemicals in your eyes can lead to blindness. Until now, the eye irritancy potential of chemical substances has had to be assessed using the Draize test on live rabbits—a standard implemented ...
Mar 1, 2023
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A membrane is a layer of material which serves as a selective barrier between two phases and remains impermeable to specific particles, molecules, or substances when exposed to the action of a driving force. Some components are allowed passage by the membrane into a permeate stream, whereas others are retained by it and accumulate in the retentate stream.
Membranes can be of various thickness, with homogeneous or heterogeneous structure. Membrane can also be classified according to their pore diameter. According to IUPAC, there are three different types of pore size classifications: microporous (dp < 2nm), mesoporous (2nm < dp < 50nm) and macroporous (dp > 50nm). Membranes can be neutral or charged, and particles transport can be active or passive. The latter can be facilitated by pressure, concentration, chemical or electrical gradients of the membrane process. Membranes can be generally classified into three groups: inorganic, polymeric or biological membranes. These three types of membranes differ significantly in their structure and functionality.
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