Related topics: cells · cell membrane

Machine learning model uncovers new drug design opportunities

Pathogens are nothing if not adaptable, and their ability to protect themselves against antibiotics increasingly poses a public health concern. A research team led by Los Alamos National Laboratory has used machine learning, ...

Researchers find new approach for antibiotic development

The opportunistic bacterial pathogen Pseudomonas aeruginosa is dangerous due to its resistance to multiple antibiotics. A research team from Heinrich Heine University Düsseldorf (HHU) and Jülich Research Center (Forschungszentrum ...

Research holds promise for liver regeneration

A new study titled "Biomimetic hepatic lobules from three-dimensional imprinted cell sheets" has been led by Prof. Yuanjin Zhao of the Department of Hepatobiliary Surgery, Hepatobiliary Institute, Nanjing Drum Tower Hospital, ...

Study sheds light on cancer cell 'tug-of-war'

Understanding how cancerous cells spread from a primary tumor is important for any number of reasons, including determining the aggressiveness of the disease itself. The movement of cells into the extracellular matrix (ECM) ...

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Membrane

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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