In Brazil, researchers at the University of São Paulo (USP) and the Pernambuco division of Oswaldo Cruz Foundation (FIOCRUZ) are developing a Zika vaccine. The formulation was tested on mice and found to be efficacious, ...
Apr 18, 2024
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The typical job of the proteasome, the garbage disposal of the cell, is to grind down proteins into smaller bits and recycle some of those bits and parts. That's still the case, for the most part, but, Johns Hopkins Medicine ...
Apr 12, 2024
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No therapies currently exist that can halt the progression of chronic kidney disease in children or restore the ability of kidney cells to filter blood. Recently, researchers at the GOFARR Laboratory for Organ Regenerative ...
Apr 8, 2024
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Researchers from the Ineos Oxford Institute for Antimicrobial Research (IOI) and Cardiff University have found evidence that bacteria resistant to colistin, a last-resort antibiotic, were present in mothers and babies under ...
Mar 27, 2024
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Dengue, caused by the virus transmitted by the bite of the female Aedes aegypti mosquito and, to a lesser extent, the Aedes albopictus mosquito, is an acute illness characterized mainly by high fever, body aches, and redness ...
Mar 16, 2024
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Lung cancer cells survive better and exhibit less cell damage when exposed to cigarette smoke in cell culture experiments compared to non-cancerous lung cells. New research by a team of undergraduate students led by a Penn ...
Mar 6, 2024
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Metastases are largely responsible for the death rate of patients with solid cancers; the prognosis of cancer patients reduces significantly if metastases are diagnosed. Until now there has been no procedure available to ...
Mar 4, 2024
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A new cellphone app developed by physician-scientists at UPMC and the University of Pittsburgh, which uses artificial intelligence (AI) to accurately diagnose ear infections, or acute otitis media (AOM), could help decrease ...
Mar 4, 2024
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When you stub your toe or bump your head, you know that rubbing the injury can lessen the ouch. But how? New research from the lab of Scott B. Hansen, Ph.D., shows how physical pressure on cells can reduce pain signals, while ...
Feb 27, 2024
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When an autopsy revealed that actor Matthew Perry died of "acute effects of ketamine," it put fresh attention on an ongoing debate in the field of psychiatry: What's the right balance between expanding access to a drug that ...
Feb 27, 2024
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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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