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Membrane Distillation (MD) is based on the evaporation of a hot feed through a microporous and hydrophobic membrane. Thermal energy is needed to heat the feed up to the desired temperature during the process. Therefore, improvements of the thermal performance of MD are important to apply this technology at large scale. The Special Issue "Thermal Performance of Membrane Distillation" focuses on the recent research efforts made in this direction, covering both the development of new membranes and the optimization of the process.

Membrane distillation.

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The fluorine nucleus, when introduced as a reporter group in membrane-associated proteins or peptides, offers a highly sensitive alternative to conventional isotope labels in solid-state NMR spectroscopy. The study presented here is concerned with the development of 19F-NMR methods, as well as data analysis schemes to extract the wealth of structural and motional information from the spectra.

Spectrum analysis. --- Membrane proteins.

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Electrospinning can be used to prepare nanofibrous membranes from diverse polymers. The large surface-to-volume ratio makes them suitable for diverse fields of applications, from filters to catalysts to tissue engineering.Here, we search for the latest developments dealing with nanofiber mats for biomedicine. From wound healing to slow release, and from tissue engineering to stem cell differentiation, nanofibrous membranes can be found in a broad range of biomedical applications. For these utilizations, their chemical as well as physical properties are important, such as hydrophobicity, fiber morphology, membrane porosity, mechanical strength, etc. This Special Issue focuses on nanofibrous membranes for biomedical applications, measuring and optimizing the correlated membrane properties. It covers the full range from basic research on new materials and producing novel electrospun structure to drug release to cell growth on nanofiber mats.

Membranes (Technology) --- Membrane separation.

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P-type ATPases are a large group of evolutionary related ion and lipid pumps that have in common that they catalyze a transient phosphorylated intermediate at a key conserved aspartate residue within the pump in order to function. While all the P-type ATPases perform active transport across cellular membranes, they have different transport specificities and serve diverse physiological functions. The ion pumps of the P-type ATPase family create electrochemical gradients that are essential for transepithelial transport, nutrient uptake and membrane potential. They mediate cellular signaling and provide the ligands for metalloenzymes. Phospholipid flippases, also members of the P-type ATPase superfamily, regulate the asymmetric lipid distribution across the lipid bilayer and are critical for the biogenesis of cell membranes. Since all of these ATPases serve fundamental cellular functions, malfunctioning is associated with various pathophysiological processes and dysfunctions of P-type ATPases are known to contribute to cardiovascular, neurological, renal and metabolic diseases. However, with the ever growing knowledge about the diseases associated with the malfunction of P-type ATPases, they are also promising targets for future drug development. In eukaryotes the most prominent examples of P-type ATPases are the Na+,K+-ATPase (sodium pump), the H+-ATPase (proton pump), the H+,K+-ATPase (proton-potassium pump) and the Ca2+-ATPases (calcium pumps). Mutations in the alpha2 and alpha3 subunit of Na,K-ATPase have been associated with neurological diseases, including rapid-onset dystonia-parkinsonism, familial hemiplegic migraine and alternating hemiplegia of childhood. Dysregulation and loss of expression of Na,K-ATPase and plasma membrane Ca-ATPases may be involved in cancer progression. Malfunctioning of the Ca-ATPases is also thought to contribute to hypertension and neurodegenerative diseases and mutations can cause cardiac dysfunction, deafness, hypertension and cerebellar ataxia. Mutations in the SERCA calcium pumps can cause heart failure, Brody myopathy and Darier disease and mutations in the Cu-ATPase genes cause Menkes and Wilson disease. Deficiencies in phospholipid flippases have been linked to progressive familial intrahepatic cholestasis, obesity, diabetes, hearing loss and neurological diseases.

P-type ATPases --- Disease --- Health --- Membrane Physiology --- Membrane biophysics

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Membrane proteins are essential for the diverse biological functions of the cells and intercellular communication in living organisms. With the recent developments in the methodologies, the research on membrane proteins has been undergoing a major transformation. In this informative book, the biological and dynamic behaviour of membrane proteins are introduced, discussed, and reviewed by some of the leading researchers in the field. The main objective of this compendium is to present the recent research in the fundamental and advanced concepts and methodologies used for studying membrane proteins. Membrane protein purification and reconstitution, protein-lipid interaction, ion/substrate transport, conformational and functional dynamics, the interaction of infectious agents, cell death, and organelle morphology are among the topics that are covered. This reprint is intended for a broad range of novice and experienced scientists with different levels of experience, from biophysicists and biochemists to microbiologists, cell biologists, and physiologists.

Membrane proteins. --- Membranes (Biology) --- Proteins