A group of disorders caused by defective salt reabsorption in the ascending LOOP OF HENLE. It is characterized by severe salt-wasting, HYPOKALEMIA; HYPERCALCIURIA; metabolic ALKALOSIS, and hyper-reninemic HYPERALDOSTERONISM without HYPERTENSION. There are several subtypes including ones due to mutations in the renal specific SODIUM-POTASSIUM-CHLORIDE SYMPORTERS.
A condition caused by the overproduction of ALDOSTERONE. It is characterized by sodium retention and potassium excretion with resultant HYPERTENSION and HYPOKALEMIA.
Abnormally low potassium concentration in the blood. It may result from potassium loss by renal secretion or by the gastrointestinal route, as by vomiting or diarrhea. It may be manifested clinically by neuromuscular disorders ranging from weakness to paralysis, by electrocardiographic abnormalities (depression of the T wave and elevation of the U wave), by renal disease, and by gastrointestinal disorders. (Dorland, 27th ed)
A characteristic symptom complex.
A subclass of symporters that specifically transport SODIUM CHLORIDE and/or POTASSIUM CHLORIDE across cellular membranes in a tightly coupled process.
Genetic defects in the selective or non-selective transport functions of the KIDNEY TUBULES.
Potassium channels whose activation is dependent on intracellular calcium concentrations.
A species of the true toads, Bufonidae, widely distributed in the United States and Europe.
The family of true toads belonging to the order Anura. The genera include Bufo, Ansonia, Nectophrynoides, and Atelopus.
Paired respiratory organs of fishes and some amphibians that are analogous to lungs. They are richly supplied with blood vessels by which oxygen and carbon dioxide are exchanged directly with the environment.
A freshwater fish used as an experimental organism and for food. This genus of the family Cichlidae (CICHLIDS) inhabits Central and South America (one species extends north into Texas), West Indies, Africa, Madagascar, Syria, and coastal India.
The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
Inorganic compounds derived from hydrochloric acid that contain the Cl- ion.
One or more layers of EPITHELIAL CELLS, supported by the basal lamina, which covers the inner or outer surfaces of the body.
Membrane proteins whose primary function is to facilitate the transport of positively charged molecules (cations) across a biological membrane.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
A colorless alkaline gas. It is formed in the body during decomposition of organic materials during a large number of metabolically important reactions. Note that the aqueous form of ammonia is referred to as AMMONIUM HYDROXIDE.
The movement of materials (including biochemical substances and drugs) through a biological system at the cellular level. The transport can be across cell membranes and epithelial layers. It also can occur within intracellular compartments and extracellular compartments.
Erythrocyte isoantigens of the Rh (Rhesus) blood group system, the most complex of all human blood groups. The major antigen Rh or D is the most common cause of erythroblastosis fetalis.
A species of the genus MACACA inhabiting India, China, and other parts of Asia. The species is used extensively in biomedical research and adapts very well to living with humans.
An allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is obtained by mining and its dust can cause lung irritation.
Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.
The movement of ions across energy-transducing cell membranes. Transport can be active, passive or facilitated. Ions may travel by themselves (uniport), or as a group of two or more ions in the same (symport) or opposite (antiport) directions.
Preparation of TOOTH surfaces and DENTAL MATERIALS with etching agents, usually phosphoric acid, to roughen the surface to increase adhesion or osteointegration.
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Materials which have structured components with at least one dimension in the range of 1 to 100 nanometers. These include NANOCOMPOSITES; NANOPARTICLES; NANOTUBES; and NANOWIRES.
Preparation of TOOTH surfaces, and of materials bonded to teeth or DENTAL IMPLANTS, with agents and methods which roughen the surface to facilitate adhesion. Agents include phosphoric or other acids (ACID ETCHING, DENTAL) and methods include LASERS.
The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE.
Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
A system of cisternae in the CYTOPLASM of many cells. In places the endoplasmic reticulum is continuous with the plasma membrane (CELL MEMBRANE) or outer membrane of the nuclear envelope. If the outer surfaces of the endoplasmic reticulum membranes are coated with ribosomes, the endoplasmic reticulum is said to be rough-surfaced (ENDOPLASMIC RETICULUM, ROUGH); otherwise it is said to be smooth-surfaced (ENDOPLASMIC RETICULUM, SMOOTH). (King & Stansfield, A Dictionary of Genetics, 4th ed)
Membrane proteins whose primary function is to facilitate the transport of molecules across a biological membrane. Included in this broad category are proteins involved in active transport (BIOLOGICAL TRANSPORT, ACTIVE), facilitated transport and ION CHANNELS.
Research that involves the application of the natural sciences, especially biology and physiology, to medicine.
A rare developmental defect in which the heart is abnormally located partially or totally outside the THORAX. It is the result of defective fusion of the anterior chest wall. Depending on the location of the heart, ectopia cordis can be thoracic, thoracoabdominal, abdominal, and cervical.
An imprecise term referring to dementia associated with CEREBROVASCULAR DISORDERS, including CEREBRAL INFARCTION (single or multiple), and conditions associated with chronic BRAIN ISCHEMIA. Diffuse, cortical, and subcortical subtypes have been described. (From Gerontol Geriatr 1998 Feb;31(1):36-44)
A sudden CARDIAC ARRHYTHMIA (e.g., VENTRICULAR FIBRILLATION) caused by a blunt, non-penetrating impact to the precordial region of chest wall. Commotio cordis often results in sudden death without prompt cardiopulmonary defibrillation.
Parliamentary democracy located between France on the northeast and Portugual on the west and bordered by the Atlantic Ocean and the Mediterranean Sea.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
The ability of organisms to sense and adapt to high concentrations of salt in their growth environment.
Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)
The structural parts of the VIRION.
Substances that comprise all matter. Each element is made up of atoms that are identical in number of electrons and protons and in nuclear charge, but may differ in mass or number of neutrons.
A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.
The deliberate and methodical practice of finding new applications for existing drugs.
Hereditary and sporadic conditions which are characterized by progressive nervous system dysfunction. These disorders are often associated with atrophy of the affected central or peripheral nervous system structures.
A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.
A publication issued at stated, more or less regular, intervals.
A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.
"The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.
A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)
The premier bibliographic database of the NATIONAL LIBRARY OF MEDICINE. MEDLINE® (MEDLARS Online) is the primary subset of PUBMED and can be searched on NLM's Web site in PubMed or the NLM Gateway. MEDLINE references are indexed with MEDICAL SUBJECT HEADINGS (MeSH).
Publications in any medium issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. (ALA Glossary of Library and Information Science, 1983, p203)

Cu(II) inhibition of the proton translocation machinery of the influenza A virus M2 protein. (1/3605)

The homotetrameric M2 integral membrane protein of influenza virus forms a proton-selective ion channel. An essential histidine residue (His-37) in the M2 transmembrane domain is believed to play an important role in the conduction mechanism of this channel. Also, this residue is believed to form hydrogen-bonded interactions with the ammonium group of the anti-viral compound, amantadine. A molecular model of this channel suggests that the imidazole side chains of His-37 from symmetry-related monomers of the homotetrameric pore converge to form a coordination site for transition metals. Thus, membrane currents of oocytes of Xenopus laevis expressing the M2 protein were recorded when the solution bathing the oocytes contained various transition metals. Membrane currents were strongly and reversibly inhibited by Cu2+ with biphasic reaction kinetics. The biphasic inhibition curves may be explained by a two-site model involving a fast-binding peripheral site with low specificity for divalent metal ions, as well as a high affinity site (Kdiss approximately 2 microM) that lies deep within the pore and shows rather slow-binding kinetics (kon = 18.6 +/- 0.9 M-1 s-1). The pH dependence of the interaction with the high affinity Cu2+-binding site parallels the pH dependence of inhibition by amantadine, which has previously been ascribed to protonation of His-37. The voltage dependence of the inhibition at the high affinity site indicates that the binding site lies within the transmembrane region of the pore. Furthermore, the inhibition by Cu2+ could be prevented by prior application of the reversible blocker of M2 channel activity, BL-1743, providing further support for the location of the site within the pore region of M2. Finally, substitutions of His-37 by alanine or glycine eliminated the high affinity site and resulted in membrane currents that were only partially inhibited at millimolar concentrations of Cu2+. Binding of Cu2+ to the high affinity site resulted in an approximately equal inhibition of both inward and outward currents. The wild-type protein showed very high specificity for Cu2+ and was only partially inhibited by 1 mM Ni2+, Pt2+, and Zn2+. These data are discussed in terms of the functional role of His-37 in the mechanism of proton translocation through the channel.  (+info)

In vivo NGF deprivation reduces SNS expression and TTX-R sodium currents in IB4-negative DRG neurons. (2/3605)

Recent evidence suggests that changes in sodium channel expression and localization may be involved in some pathological pain syndromes. SNS, a tetrodotoxin-resistant (TTX-R) sodium channel, is preferentially expressed in small dorsal root ganglion (DRG) neurons, many of which are nociceptive. TTX-R sodium currents and SNS mRNA expression have been shown to be modulated by nerve growth factor (NGF) in vitro and in vivo. To determine whether SNS expression and TTX-R currents in DRG neurons are affected by reduced levels of systemic NGF, we immunized adult rats with NGF, which causes thermal hypoalgesia in rats with high antibody titers to NGF. DRG neurons cultured from rats with high antibody titers to NGF, which do not bind the isolectin IB4 (IB4(-)) but do express TrkA, were studied with whole cell patch-clamp and in situ hybridization. Mean TTX-R sodium current density was decreased from 504 +/- 77 pA/pF to 307 +/- 61 pA/pF in control versus NGF-deprived neurons, respectively. In comparison, the mean TTX-sensitive sodium current density was not significantly different between control and NGF-deprived neurons. Quantification of SNS mRNA hybridization signal showed a significant decrease in the signal in NGF-deprived neurons compared with the control neurons. The data suggest that NGF has a major role in the maintenance of steady-state levels of TTX-R sodium currents and SNS mRNA in IB4(-) DRG neurons in adult rats in vivo.  (+info)

Sodium ion uptake into isolated plasma membrane vesicles: indirect effects of other ions. (3/3605)

Vesicles derived from plasma membrane of corneal endothelium were agitated to their minimum size distribution. When isotonic salt solutions surrounding the vesicles were changed there were alterations to the vesicle size distribution: the modal point of the logarithmic distribution did not change but the log variance did, indicating that substantial fission and fusion of vesicles occurred depending upon the nature of the surrounding solute. Orientation and total membrane area was conserved in the transformed population of vesicles. Although the ions added to the external isotonic salt solutions in the present series of experiments have no direct effect upon sodium membrane transporters in these membranes, kinetics of sodium accumulation into the vesicles were affected in a way that correlated with changes to the vesicle size distribution. Early-saturating (<1 min) intravesicular concentrations of sodium corresponded with apparently stable populations. Late-saturating (>1 min) intravesicular concentrations of sodium corresponded with significant vesicle distribution shifts and included a few seconds of delay. During the linear accumulation phase, both populations showed similar magnitudes of sodium transport. The significance of these data is discussed.  (+info)

Evidence for an anion exchange mechanism for uptake of conjugated bile acid from the rat jejunum. (4/3605)

Absorption of conjugated bile acids from the small intestine is very efficient. The mechanisms of jejunal absorption are not very well understood. The aim of this study was to clarify the mechanism of absorption of conjugated bile acid at the apical membrane of jejunal epithelial cells. Brush-border membrane vesicles from intestinal epithelial cells of the rat were prepared. Absorption of two taurine-conjugated bile acids that are representative of endogenous bile acids in many variate vertebrate species were studied. In ileal, but not jejunal brush-border membrane vesicles, transport of conjugated bile acids was cis-stimulated by sodium. Transport of conjugated bile acids was trans-stimulated by bicarbonate in the jejunum. Absorption of conjugated dihydroxy-bile acids was almost twice as fast as of trihydroxy-bile acids. Coincubation with other conjugated bile acids, bromosulfophthalein, and DIDS, as well as by incubation in the cold inhibited the transport rate effectively. Absorption of conjugated bile acids in the jejunum from the rat is driven by anion exchange and is most likely an antiport transport.  (+info)

The polar flagellar motor of Vibrio cholerae is driven by an Na+ motive force. (5/3605)

Vibrio cholerae is a highly motile bacterium which possesses a single polar flagellum as a locomotion organelle. Motility is thought to be an important factor for the virulence of V. cholerae. The genome sequencing project of this organism is in progress, and the genes that are highly homologous to the essential genes of the Na+-driven polar flagellar motor of Vibrio alginolyticus were found in the genome database of V. cholerae. The energy source of its flagellar motor was investigated. We examined the Na+ dependence and the sensitivity to the Na+ motor-specific inhibitor of the motility of the V. cholerae strains and present the evidence that the polar flagellar motor of V. cholerae is driven by an Na+ motive force.  (+info)

Homozygous deletion in KVLQT1 associated with Jervell and Lange-Nielsen syndrome. (6/3605)

BACKGROUND: Long-QT (LQT) syndrome is a cardiac disorder that causes syncope, seizures, and sudden death from ventricular arrhythmias, specifically torsade de pointes. Both autosomal dominant LQT (Romano-Ward syndrome) and autosomal recessive LQT (Jervell and Lange-Nielsen syndrome, JLNS) have been reported. Heterozygous mutations in 3 potassium channel genes, KVLQT1, KCNE1 (minK), and HERG, and the cardiac sodium channel gene SCN5A cause autosomal dominant LQT. Autosomal recessive LQT, which is associated with deafness, has been found to occur with homozygous mutations in KVLQT1 and KCNE1 in JLNS families in which QTc prolongation was inherited as a dominant trait. METHODS AND RESULTS: An Amish family with clinical evidence of JLNS was analyzed for mutations by use of single-strand conformation polymorphism and DNA sequencing analyses for mutations in all known LQT genes. A novel homozygous 2-bp deletion in the S2 transmembrane segment of KVLQT1 was identified in affected members of this Amish family in which both QTc prolongation and deafness were inherited as recessive traits. This deletion represents a new JLNS-associated mutation in KVLQT1 and has deleterious effects on the KVLQT1 potassium channel, causing a frameshift and the truncation of the KVLQT1 protein. In contrast to previous reports in which LQT was inherited as a clear dominant trait, 2 parents in the JLNS family described here have normal QTc intervals (0.43 and 0.44 seconds, respectively). CONCLUSIONS: A novel homozygous KVLQT1 mutation causes JLNS in an Amish family with deafness that is inherited as an autosomal recessive trait.  (+info)

Effects of changes in membrane sodium flux on virulence gene expression in Vibrio cholerae. (7/3605)

The expression of several virulence factors of Vibrio cholerae is coordinately regulated by the ToxT molecule and the membrane proteins TcpP/H and ToxR/S, which are required for toxT transcription. To identify proteins that negatively affect toxT transcription, we screened transposon mutants of V. cholerae carrying a chromosomally integrated toxT::lacZ reporter construct for darker blue colonies on media containing 5-bromo-4-chlor-3-indolyl beta-D galactoside (X-gal). Two mutants had transposon insertions in a region homologous to the nqr gene cluster of Vibrio alginolyticus, encoding a sodium-translocating NADH-ubiquinone oxidoreductase (NQR). In V. alginolyticus, NQR is a respiration-linked Na+ extrusion pump generating a sodium motive force that can be used for solute import, ATP synthesis, and flagella rotation. Inhibition of NQR enzyme function in V. cholerae by the specific inhibitor 2-n-heptyl-4-hydroxyquinoline N-oxide (HQNO) resulted in elevated toxT::lacZ activity. Increased toxT::lacZ expression in an nqr mutant strain compared with the parental strain was observed when the TcpP/H molecules alone were strongly expressed, suggesting that the negative effect of the NQR complex on toxT transcription is mediated through TcpP/H. However, the ability of the TcpP/H proteins to activate the toxT::lacZ reporter construct was greatly diminished in the presence of high NaCl concentrations in the growth medium. The flagellar motor of V. cholerae appears to be driven by a sodium motive force, and modulation of flagella rotation by inhibitory drugs, high media viscosity, or specific mutations resulted in increases of toxT::lacZ expression. Thus, the regulation of the main virulence factors of V. cholerae appears to be modulated by endogenous and exogenous sodium levels in a complex way.  (+info)

Stimulus-secretion coupling in neurohypophysial nerve endings: a role for intravesicular sodium? (8/3605)

It is generally accepted that Ca is essentially involved in regulated secretion, but the role of this cation, as well as others such as Na, is not well understood. An illustrative example occurs in neurohypophysial secretion, where an experimentally induced increase in the cytosolic concentration of Na+ can induce continuous neuropeptide release. In contrast, an increase in cytosolic Ca2+ will have only a transient stimulatory effect. The secretion-promoting targets for Ca2+ are not known; they may be cytosolic, as is usually assumed, but they may also be intravesicular, especially in view of evidence that Ca-rich secretory vesicles are preferentially secreted. In the present work, we have investigated the movements of these cations into and out of secretory vesicles during stimulus-secretion coupling. Isolated rat neurohypophysial nerve endings were stimulated by potassium (55 mM) depolarization, and at 6 min (peak secretion) and 20 min after the onset of stimulation, the elemental content of individual secretory vesicles was measured by quantitative x-ray microanalysis. A depolarization-induced transient increase in intravesicular Na+ concentration was found to coincide with the onset of secretion. Moreover, only a predicted small fraction of peripheral vesicles-presumably the docked ones-were Na+-loaded. The low sulfur concentration of Na+-rich vesicles most likely resulted from vesicle swelling. The results suggest that high intravesicular Na+ concentrations in docked vesicles, occurring by Na+/Ca2+ exchange or by transient fusion pore opening, is a proximal event in exocytosis.  (+info)

TY - JOUR. T1 - Na+-H+ and Na+-Li+ exchange are mediated by the same membrane transport protein in human red blood cells. T2 - An NMR investigation. AU - Chi, Yuling. AU - Mo, Suilan. AU - De Freitas, Duarte Mota. PY - 1996. Y1 - 1996. N2 - Na+-H+ exchange is a transport system present in erythrocytes which plays an important role in the regulation of intracellular pH, cellular volume, and transmembrane ion transport. Na+-Li+ exchange has received much attention and has been investigated in more detail than have any of the other ion transport systems, because of its high reproducibility. Both red blood cell (RBC) Na+-H+ and Na+-Li+ exchange are elevated in essential hypertensive patients relative to normotensive individuals. RBC Na+-Li+ exchange may be a mode of operation of Na+-H+ exchange. Amiloride and its analogue, 5-(N,N-hexamethylene)amiloride (HMA), are well-known inhibitors of Na+- H+ exchange, whereas phloretin strongly inhibits Na+-Li+ exchange. In this study, we tested the effects of ...
TY - JOUR. T1 - A new approach to the study of ion transport processes by an in situ radiotracer method based on measuring intensity changes and energy spectrum alterations of β-radiation. AU - Németh, Z.. AU - Erdei, L.. AU - Kolics, A.. PY - 1995/3. Y1 - 1995/3. N2 - A new approach for the study of ion transport by an in situ radiotracer method is presented. The method is based upon the measurement of the intensity and energy spectrum change of β-radiation during the penetration of labeled species. The applicability of the radiotracer technique is detailed through the measurement of the transport of labeled chloride ions into a PERMAPLEX-A20 anion exchanger membrane. The proposed method is applicable to in situ monitoring of the motion of ions in the membrane (or adsorbent).. AB - A new approach for the study of ion transport by an in situ radiotracer method is presented. The method is based upon the measurement of the intensity and energy spectrum change of β-radiation during the ...
I am conducting my research project and currently stuck at a point where I need to find out about the proteins role in active transport of ion (Na & K) in molecular level detail. Need to know everything about this Na-K ion transport mechanism, Contribution of protein in transport, Why NA & K, How does protein allows certain molecules to pass through and stops others etc....abt proteins ...
Semantic Scholar extracted view of Ion transport across biological membranes and its control. Workshop organized by the Sonderforschungsbereich 160--Eigenschaften biologischer Membranen--September 25-27 1983, Maria Laach, FRG. by B. Deuticke et al.
Solid polymeric electrolytes have the potential to greatly improve battery efficiency and stability, but ions like Li simply diffuse too slowly in current materials for them to be viable. The challenge for computationally designing new polymers lies in accurately modeling both the long- timescale of ion transport and the chem. specific ion- polymer couplings that govern ion motion. In this talk, I will show how short atomistic simulations can be combined with a generalizable mesoscopic ion transport model to reliably predict ion diffusivity across many chem. classes of polymers. This model has now been used to characterize several hundred new materials and the talk will cover results for several new classes of polymer electrolytes exhibiting high Li diffusivity and interesting new mechanistic ion transport features. ...
An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel. The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.
Measurements of extracellular pH (pHe) in vivo have shown that the microenvironment in tumours is more acidic than in normal tissue. However, both human and animal tumour cells have been shown to have an intracellular pH (pHi) on the alkaline side of neutrality (pH 7.1-7.2). This gives rise to a reversed pH gradient between tumours and normal tissue- which implies that cells within solid tumours are capable of maintaining their level of pHi at physiological levels, despite lower than normal levels of pHe. In this paper the authors describe a mathematical model that provides a possible explanation for the altered pH gradient observed in tumours. The authors examine the infuence of changes in the microenvironment on the activity of several membrane based ion transport systems Using qualitative analysis the authors show that the pHi of tumour cells is less sensitive to external pH than for normal cells, because of their increased reliance on the inefficient glycolytic pathway for energy production. ...
Our primary focus is on real time monitoring of ion transport mechanisms in epithelia, using high-resolution microscopy. One of the crucial problems facing all epithelial cells is the control of the intracellular milieu. In an effort to maintain ionic homeostasis, epithelial cells have devised a variety of ion channels, transport proteins, and carriers to regulate and maintain the intracellular ionic concentrations. To further understand how ions are transported in epithelial cells, we have developed a variety of optical techniques to continuously monitor intracellular ionic concentrations in real time. Using high-resolution video or confocal microscopy we are presently able to monitor intracellular Ca2+, Na+, K+, Cl-, pH, and membrane potential. We are currently investigating various aspects of renal tubule and gastric tissue ion transport in intact renal tubules and gastric glands. We also are characterizing the secretory and reabsorptive properties of the colonic crypt, with a special focus ...
One intriguing finding from theoretical calculations was the electrostatic contribution of K131 in stabilizing the Cl− binding to all three binding sites in ClC-ec1 (Faraldo-Gomez and Roux, 2004) despite the fact that the side chain of K131 does not directly line the ion transport pathway. Faraldo-Gomez and Rouxs calculations pointed out that the single most important favorable ion-side chain electrostatic interaction in ClC-ec1 originates not from the ion-contacting residues such as S107 or Y445 but from K131 (Faraldo-Gomez and Roux, 2004). A lysine residue at this position is conserved from the bacterial to the mammalian ClC proteins. To examine the functional role of the corresponding lysine residue (K149) in ClC-0, we constructed several K149 mutants, including K149E, K149D, K149A, K149L, and K149R. We have so far been unable to functionally express K149E in Xenopus oocytes. Two runs of expression of K149E and K149D mutants in HEK293 cells did not result in functional current within 5 d ...
Kleyman, T.R., Cragoe, E.J. Amiloride and its analogs as tools in the study of ion transport. J. Membrain Biol. 105, 1-21 (1988). https://doi.org/10.1007/BF01871102. Download ...
View Notes - fields_lec9 from BIO 2.797j at MIT. Key Concepts for this section 1: Lorentz force law, Field, Maxwells equation 2: Ion Transport, Nernst-Planck equation 3: (Quasi)electrostatics,
Studies on water and ion transport in homopteran insects: Ultrastructure and cytochemistry of the cicadoid and cercopoid midgut Academic Article ...
In this study, the effect on thin film growth due to an anomalous electron transport, found in high power impulse magnetron sputtering (HiPIMS), has been investigated for the case of a planar circular magnetron. An important consequence of this type of transport is that it affects the way ions are being transported in the plasma. It was found that a significant fraction of ions are transported radially outwards in the vicinity of the cathode, across the magnetic field lines, leading to increased deposition rates directly at the side of the cathode ( perpendicular to the target surface). Furthermore, this mass transport parallel to the target surface leads to that the fraction of sputtered material reaching a substrate placed directly in front of the target is substantially lower in HiPIMS compared with conventional direct current magnetron sputtering (dcMS). This would help to explain the lower deposition rates generally observed for HiPIMS compared with dcMS. Moreover, time-averaged mass ...
The transport of mineral ions into and out of tissues and cells is central to the life of plants. Ion transport and the plasma membrane transporters themselves have been studied using a variety of techniques. In the last 15 years, measurement of specific ion fluxes has contributed to the characteriz …
The teleost gill has a key position in the history of the study of epithelial ion transport - the first unequivocal demonstration of ion transport in vitro was the experiments on chloride excretion...
Recent research has shown that nitric oxide (NO) produced by nitric oxide synthases (Nos) is an inhibitor of ion transporter activity and a modulator of epithelial ion transport in fish but little is known on changes in the Nos/NO system during osmotic stress. We hypothesized that the Nos/NO system responds to salinity changes as an integrated part of the acclimation process. Expression and localization of nos1/Nos1 and nos2/Nos2 were investigated in gill, kidney and intestine of FW- and SW-transferred trout using qPCR, Western blotting and immunohistochemistry, along with expressional changes of major ion transporters in the gill ...
Human (Homo sapiens) のFXYD3 (FXYD domain containing ion transport regulator 3)遺伝子を含むベクター、レンチウイルス、アデノウイルス、 (AAV) アデノ随伴、アデノ随伴ウイルス、MMLV レトロウイルス,、piggyBac, shRNA、gRNA、 ガイドRNA、 CRISPR-Cas9 、クリスパー、プラスミド
Fast Ion Transport in Solids - Proceedings of the NATO Advanced Research Workshop, Belgirate, Italy, September 20-26, 1992 (Hardcover, 1993 ed.) / Editor: Bruno Scrosati / Editor: A. Magistris / Editor: C.M. Mari / Editor: G. Mariotto ; 9780792325147 ; Physical chemistry, Chemistry, Science & Mathematics, Books
The long-term and central goal of the Cystic Fibrosis Research Center at the University of Pittsburgh is to provide improved treatments, and ultimately a cure, for cystic fibrosis (CF). A collaborative effort by investigators in the Departments of Cell Biology and Physiology, Medicine, and Pediatrics, our strategy is to implement this goal using our strengths in the basic science of CFTR and epithelial ion transport and to translate our increasingly applied basic science knowledge to clinical investigations.. In order to achieve these goals we have established centers of excellence in three broad categories: Cell and Molecular Biology of CF, Infection and Inflammation in CF, and Clinical Studies in CF. These centers are summarized below:. Cell and Molecular Biology: The bulk of our research is conducted using primary human airway cell cultures established from CF and non-CF tissues that are made available by the more than 100 lung transplants that are performed annually at the University of ...
Dynamic amphiphiles provide access to transmembrane ion transport, differential sensing and cellular uptake. In this report, we introduce dynamic amphiphiles with fluorescent tails. Core-substituted naphthalenediimides (cNDIs) and perylenediimides (cPDIs) are tested. Whereas the latter suffer from poor partitioning, dynamic cNDI amphiphiles are found to be purifiable by RP-HPLC, to partition selectively into liquid-disordered (Ld) microdomains of mixed lipid bilayers and to activate DNA as transporters. Importantly, fluorescence properties, partitioning and activity can be modulated by changes in the structure of mixed amphiphiles. These results confirm the potential of dynamic fluorescent amphiphiles to selectively label extra- and intracellular membrane domains and visualize biological function.. [open archive unige:21885 • pdf ...
Excepto si se señala otra cosa, la licencia del ítem se describe como: This work, unless the contrary is indicated in the text, the photographs or in other illustrations, is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. You are free to share, copy, distribute and transmit the work provided that the author is credited and reuse of the material is restricted to non-commercial purposes only and that no derivative works are created from the original material. ...
Oxygen can be recovered from air at high temperatures by passing hot compressed oxygen-containing gas, preferably air, at temperatures above 500oC over ...
What happens with ion transport when the dimensions of the pore become very, very small? How the pores structure influences its transport properties?Motivation
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The effects of extracellular ATP on ion fluxes and the intracellular free Ca2+ concentration ([Ca2+]i) were examined using a suspension of rat parotid acinar cells and were contrasted with the effects of the muscarinic agonist carbachol. Although ATP and carbachol both rapidly increased [Ca2+]i about threefold above the resting level (200-250 nM), the effect of ATP was due primarily to an influx of Ca2+ across the plasma membrane, while the initial response to carbachol was due to a release of Ca2+ from intracellular stores. Within 10 s, ATP (1 mM) and carbachol (20 microM) reduced the cellular Cl- content by 39-50% and cell volume by 15-25%. Both stimuli reduced the cytosolic K+ content by 57-65%, but there were marked differences in the rate and pattern of net K+ movement as well as the effects of K+ channel inhibitors on the effluxes initiated by the two stimuli. The maximum rate of the ATP-stimulated K+ efflux (approximately 2,200 nmol K+/mg protein per min) was about two-thirds that of the ...
The pHi (intracellular pH) is an important physiological parameter which is altered during hypoxia and ischaemia, pathological conditions accompanied by a dramatic decrease in pHi. Sensors of pHi include ion transport systems which control intracellular Ca2+ gradients and link changes in pHi to functions as diverse as proliferation and apoptosis. The annexins are a protein family characterized by Ca2+-dependent interactions with cellular membranes. Additionally, in vitro evidence points to the existence of pH-dependent, Ca2+-independent membrane association of several annexins. We show that hypoxia promotes the interaction of the recombinant annexin A2-S100A10 (p11) and annexin A6 with the plasma membrane. We have investigated in vivo the influence of the pHi on the membrane association of human annexins A1, A2, A4, A5 and A6 tagged with fluorescent proteins, and characterized this interaction for endogenous annexins present in smooth muscle and HEK (human embryonic kidney)-293 cells ...
An interesting and perplexing feature of the mosquito larval midgut is that the luminal compartments exhibit one of the highest pH values generated by a biological system. The pH of the luminal contents in mosquito larvae increases from near neutrality in the foregut to a value that exceeds 10 in the anterior midgut then drops to 7.5 in the posterior midgut (Dadd, 1975; Ramsay, 1950). These results are consistent with a vigorous active cycling of base between the gut contents and hemolymph during the digestive cycle, similar to that suggested for lepidopteran larvae (Moffett, 1994). The alkaline environment optimal for mosquito digestive enzymes sterilizes food and dissociates the tannin-protein complexes that are ingested in the plant detritus diet of the larvae (see Clements, 1992).. The generation of large pH gradients along short distances in the absence of morphological barriers is almost certainly the result of region-specific ion transport systems energized by ion-motive ATPases. The ...
The ion transport systems used to regulate acid-base balance are not equally effective in all marine animal groups. Marine organisms are apparently highly tolerant of CO2 when they can accumulate large amounts of bicarbonate ions, which stabilize the pH value. These organisms are usually also able to very effectively excrete protons. Mobile and active species such as fish, certain crustaceans, and cephalopods - cuttlefish, for instance - are therefore especially CO2-tolerant. The metabolic rates of these animals can strongly fluctuate and reach very high levels during exercise (hunting & escape behaviour). The oxygen-consumption rate (a measure of metabolic rate) of these active animal groups can reach levels that are orders of magnitude above those of sea urchins, starfish or mussels. Because large amounts of CO2 and protons accumulate during excessive muscle activity, active animals often possess an efficient system for proton excretion and acid-base regulation. Consequently, these animals can ...
exchange, and K+absorption/H+ secretion mediated by H+-K+-ATPase (3, 40). These transport systems are believed to be nonelectrogenic and thus cannot be assessed fromI sc measurements.. The vasopressin receptor is of two different subtypes, the V1 and V2 receptors (20, 31, 42). The present study has demonstrated that the regulation of three kinds of electrogenic ion transport in the colon by AVP was probably all mediated by the V1 receptor, because they were each inhibited more potently by the V1 than by the V2 receptor antagonist (Table 3) (29, 30). The dissociation constant of AVP for the V1 receptor has been reported to be 0.6-3 nM (42). The ED50value for inhibiting electrogenic Na+ absorption (0.8 nM) was within this range (Fig. 2). The ED50value for activating K+ secretion may also be within this range (0.1-1 nM; Figs. 3 and 5), whereas that for activating Cl−secretion seems to be at a slightly higher value (,10 nM; Fig. 3). It cannot be excluded, however, that there is also the V2 ...
Dr. Pearce Wilcox: Advances in technology have made it feasible for many laboratories to test compounds that might facilitate CFTR function. These referenced studies in cell systems and animal models illustrate the potential in F508del for a class of medications with already established clinical roles - PDE-5 inhibitors. Given that cAMP-dependent chloride conductance in CF epithelial cells is impaired, there is reason to believe that modulating intracellular levels of cAMP could have beneficial therapeutic effects for patients with CF. While an understanding of the mechanisms are limited, there is work to show a partial correction of the basic transepithelial ion transport abnormalities, and mitigation of the exaggerated inflammatory responses related to the F508del-CFTR protein. A wide dose safety margin of these compounds, based especially on work in pulmonary hypertension, has been shown. However, the study of Leier et al suggests that supraphysiologic levels may be needed to potentiate CFTR ...
Click to launch & play an online audio visual presentation by Prof. Martha ODonnell on Blood-brain barrier ion transport, part of a collection of multimedia lectures.
The bottom line is that, if a true relationship between ion transport (as measured by nasal PD) and the severity of respiratory disease exists, it is likely to be weak. These data are consistent with the notion of a point of no return-that is, the ion transport abnormality provides the setting for CF lung disease early in life but, once established, other factors such as non-CFTR gene modifiers, the response of the innate immune system, mucus secretory control mechanisms, or environmental factors are more important in determining disease severity.23. Is this concept important? Certainly; nasal PD has frequently been employed as a surrogate outcome measure for proof of principle trials of new treatments.24 If fundamental treatments are to work, these data suggest that early intervention is necessary as other factors may have a more profound influence on the eventual severity of lung disease. If ion transport is to be used as a surrogate outcome for fundamental treatments, then the data from ...
Ligand-gated ion channels (LGICs) are a group of transmembrane ion channel proteins which open to allow ions such as Na+, K+, Ca2+, or Cl- t ...
Ligand-gated ion channels (LGICs) are a group of transmembrane ion channel proteins which open to allow ions such as Na+, K+, Ca2+, or Cl- t ...
A method and apparatus is disclosed for selectively identifying, and targeting with an energy beam, specific cells within a mixed cell population, for the purpose of inducing a response in the targeted cells. Two or more fluorescent labels can be attached to the targeted cells, and distinguished from one another by a color camera. By use of this system, one can monitor and affect cells having a desired phenotype. For example, targeted cells can not only be inactivated by an energy beam, but can also be monitored through fluorescent labeling for changes in cell morphology, ion transport or other cellular functions.
Control of the volume of surface liquid which covers the pulmonary epithelium is critical for normal mucociliary clearance and for efficient gas exchange. The role that active transepithelial ion transport plays as a driving force for liquid movement across the pulmonary airways is currently under study. We measure the bioelectric properties of isolated bronchi and bronchioles as correlates of active ion transport activity. We then use selective transport inhibitors and stimulators to determine which transport pathways are present and how these processes are regulated. In persons afflicted with cystic fibrosis (CF), a molecular defect in an epithelial chloride channel is present that leads to a myriad of pathological problems, the most critical of which involves secretion of thickened, dehydrated mucus into the airways. A major focus of our research is to determine how such defects in chloride ion transport are mechanistically related to the development of the symptoms observed in cystic ...
This research project examines the transport of ions through porous alumina membranes with channels of ̃200 nanometers in diameter. The test molecule is the permeate anion 1,5-naphthalene disulfonate (NDS2-), which as absorbance in the ultraviolet range and also exhibits fluorescence. This allows direct examination of transport by utilizing ultraviolet-visible spectroscopy as well as fluorescence spectroscopy. Adding substituents through strong alumina-silane linkages further modifies all the surfaces of the alumina nanotube membranes. Membranes are soaked in solutions containing either octadecyl trimethoxysilane (ODTMS) or isobutyl trimethoxysilane (IBTMS). Ion transport across the membrane treated with the hydrophobic octadecyl trimethoxysilane was hindered significantly, while the membranes exposed to a short alkyl chain isobutyl trimethoxysilane demonstrated only a slight blockage of ion transport. In both cases, addition of an ionic surfactant dodecyl benzenesulfonate (DBS) and also cationic drug
TY - JOUR. T1 - The extracellular loop of pendrin and prestin modulates their voltage-sensing property. AU - Kuwabara, Makoto F.. AU - Wasano, Koichiro. AU - Takahashi, Satoe. AU - Bodner, Justin. AU - Komori, Tomotaka. AU - Uemura, Sotaro. AU - Zheng, Jing. AU - Shima, Tomohiro. AU - Homma, Kazuaki. PY - 2018/1/1. Y1 - 2018/1/1. N2 - Pendrin and prestin belong to the solute carrier 26 (SLC26) family of anion transporters. Prestin is unique among the SLC26 family members in that it displays voltage-driven motor activity (electromotility) and concurrent gating currents that manifest as nonlinear cell membrane electrical capacitance (nonlinear capacitance (NLC)). Although the anion transport mechanism of the SLC26 proteins has begun to be elucidated, the molecular mechanism of electromotility, which is thought to have evolved from an ancestral ion transport mechanism, still remains largely elusive. Here, we demonstrate that pendrin also exhibits large NLC and that charged residues present in one ...
Disorders of epithelial ion transport play an important role in the development of many diseases such as cystic fibrosis or diarrhea. Recent research has shown that altered ion transport may also be responsible for the pathomechanism of pancreatic inflammatory diseases and for the abnormal, metaplastic changes of the esophagus (Barretts esophagus). The incidence of these diseases is increasing worldwide, placing a huge and costly burden on health-care system. At present, the pathomechanism of pancreatitis or Barretts esophagus is not completely understood, which makes it difficult to develop effective therapies. The aim of our research work is to examine the role of ion transport processes in the development and progression of these gastrointestinal diseases and to identify therapeutic targets that can be a promising starting point for treating of these diseases ...
TY - JOUR. T1 - P2Y2 receptor-mediated inhibition of ion transport in distal lung epithelial cells. AU - Ramminger, S. J.. AU - Collett, A.. AU - Baines, D. L.. AU - Murphie, H.. AU - McAlroy, H. L.. AU - Olver, R. E.. AU - Inglis, S. K.. AU - Wilson, S. M.. PY - 1999/9. Y1 - 1999/9. N2 - 1. Rat foetal distal lung epithelial cells were plated onto permeable supports where they became integrated into epithelial sheets that spontaneously generated short circuit current (I(SC)) 2. Apical ATP (100 μM) evoked a transient fall in I(SC) that was followed by a rise to a clear peak which, in turn, was succeeded by a slowly developing decline to a value below control. Apical UTP evoked an essentially identical response. 3. UDP and ADP were ineffective whilst ATP had no effect when added to the basolateral solution. These effects thus appear to be mediated by apical P2Y2 receptors. 4. The rising phase of the responses to ATP/UTP was selectively inhibited by anion transport inhibitors but persisted in the ...
1. O2 uptake was determined for periods of 23-46 h in salt-depleted crayfish held in deionized water (DW) or Na-free media at 10 degrees C. These media were replaced by artificial lakewater media (ALW) containing 0-2-0-6 mM Na and O2 uptake was again determined for periods of 24-66 h. 2. During net ion uptake in ALW the metabolic rate was either elevated or depressed. Standard metabolism in ALW altered by amounts equivalent to 0-1 - 15-5% (mean 6-4 (15) +/− 4-4% S. D.) of the metabolic rate measured during salt-depletion. On three occasions the metabolic rate was elevated by 22-0 - 66-7%, but some of this increase may have been due to locomotor activity. 3. The calculated values for thermodynamic work involved in ion transport were 0-056 - 0-268 J/10 g. h at 10 degrees C, or 1-5 - 7-2% of the mean standard metabolic rate. Most of the observed changes in metabolic rate lie within the limits of experimental error (ca. +/− 7%). Hence the energetic cost of ion transport is too small for direct ...
1. van der Merwe, J. Q., Moreau, F., and MacNaughton, W. K. Protease-activated receptor-2 stimulates intestinal SCBN epithelial chloride transport through activation of PLC and selective PKC isoforms. Am J Physiol Gastrointest Liver Physiol, 296: G1258-1266, 2009. 2. van der Merwe, J. Q., Ohland, C. L., Hirota, C. L., and MacNaughton, W. K. Prostaglandin E2 derived from cyclooxygenases 1 and 2 mediates intestinal SCBN epithelial ion transport stimulated by the activation of protease-activated receptor 2. J Pharmacol Exp Ther, 329: 747-752, 2009. 3. Dong, X., Smoll, E. J., Ko, K. H., Lee, J., Chow, J. Y., Kim, H. D., Insel, P. A., and Dong, H. P2Y receptors mediate Ca2+ signaling in duodenocytes and contribute to duodenal mucosal SCBN bicarbonate secretion. Am J Physiol Gastrointest Liver Physiol, 296: G424-432, 2009. 4. Buret, A. and Lin, Y. C. Genotypic characterization of an epithelial cell line SCBN for the study of parasite-epithelial interactions. J Parasitol, 94: 545-548, 2008. 5. Smith, ...
Liquid state of low-density pressure-amorphized ice above its Tg. Ion transport in a chemically prepared polypyrrole/poly(styrene-4-sulfonate) composite
1.D.148. The Synthetic Ion Channel Formed by Multiblock Amphiphile with Anisotropic Dual-Stimuli-Responsiveness (ChMAAR) Family. Inspired by the structures and functions of natural ion channels that can respond to multiple stimuli in an anisotropic manner, Sasaki et al. 2021 developed multiblock amphiphile VF. When VF was incorporated into lipid bilayer membranes, VF formed a supramolecular ion channel whose ion transport properties were controllable by the polarity and amplitude of the applied voltage. Microscopic emission spectroscopy revealed that VF changed its molecular conformation in response to the applied voltage. Furthermore, the ion transport property of VF could be reversibly switched by the addition of (R)-propranolol, an aromatic amine known as an antiarrhythmic agent, followed by the addition of beta-cyclodextrin for its removal. The highly regulated orientation of VF allowed for an anisotropic dual-stimuli-responsiveness as a synthetic ion channel (Sasaki et al. 2021). ...
Physiologic Instruments designs and manufactures instrumentation, Ussing Chamber Systems and Data Acquisition products for studying transport across epithelial barriers. Transepithelial voltage, short-circuit current and resistance are measured using single and multi-channel voltage/current clamps that may be directly connected to Acquire & Analyze for automating data collection and analysis.
As the third-generation rigid macrocycles evolved from progenitor 1, cyclic aromatic oligoamides 3, with a backbone of reduced constraint, exhibit extremely strong stacking with an astoundingly high affinity (estimated lower limit of K dimer , 10 13 M -1 in CHCl 3), which leads to dispersed tubular stacks that undergo further assembly in solution. Computational study reveals a very large binding energy (-49.77 kcal mol -1) and indicates highly cooperative local dipole interactions that account for the observed strength and directionality for the stacking of 3. In the solid-state, X-ray diffraction (XRD) confirms that the aggregation of 3 results in well-aligned tubular stacks. The persistent tubular assemblies of 3, with their non-deformable sub-nm pore, are expected to possess many interesting functions. One such function, transmembrane ion transport, is observed for 3. ...
Epithelial cells have an apical-basolateral axis of polarity, which is required for epithelial functions including barrier formation, vectorial ion transport and sensory perception. Here we review what is known about the sorting signals, machineries
Ions remain in solution (meaning, dissolved in water) because the attraction forces between the ions and the water is greater than the attraction forces between the ions and other ions. Conversely, ions will come out of solution (forming a precipitate) if the attraction forces are greater between the ions and other ions. This is like a situation where your family (mum, dad, brothers and sisters) may dissociate from each other and mingle when at a family barbecue - whether you choose to stick together or not depends on how much you like to hang out with the other people there ...
Odvisno katerega želiš, cel kup jih je na voljo po cenah, kot so na rolex.com je pa kup modelov, za katere se čaka oziroma trenutno vlada stanje, kjer jih dobijo samo boljši kupci. Jaz sem kupil že več kosov, pa sem vseeno dobil namig, naj kupim kup nakita, potem pa dobim željeni rolex. Ne hvala, bom počakal recesijo ...
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... drift cells or ion guides. Many standard sizes are available, while custom configurations are also offered. ... Photonis holds a number of patents for our innovative approach to improving ion transport. Our Resistive Glass products ... Photonis holds a number of patents for our innovative approach to improving ion transport. Our Resistive Glass products ... drift cells or ion guides. Many standard sizes are available, while custom configurations are also offered. ...
In order to study the interaction of ions of intermediate energies with plasma fluctuations, two plasma immersible lithium ion ... Because of the low ion mass, beam velocities of 100-300 kms are in the range of Alfven speeds in typical helium plasmas in the ... Compared to discharge based ion sources, they are compact, have zero gas load, small energy dispersion, and can be operated at ... In order to study the interaction of ions of intermediate energies with plasma fluctuations, two plasma immersible lithium ion ...
Interhemispheric transport of metallic ions within ionospheric sporadic E layers by the lower thermospheric meridional ... New ACP Letter: Interhemispheric transport of metallic ions within ionospheric sporadic E layers by the lower thermospheric ... The model simulations reveal that the winter-to-summer meridional circulation transports the long-lived metal ions from the ... New ACP Letter: Interhemispheric transport of metallic ions within ionospheric sporadic E layers by the lower thermospheric ...
Effects of Graphite Structure and Ion Transport on the Electrochemical Properties of Rechargeable Aluminum-Graphite Batteries ... Effects of Graphite Structure and Ion Transport on the Electrochemical Properties of Rechargeable Aluminum-Graphite Batteries ... Effects of Graphite Structure and Ion Transport on the Electrochemical Properties of Rechargeable Aluminum-Graphite Batteries. ...
Ion transport, Transport, Zinc transport. Ligand. Zinc. Enzyme and pathway databases. Reactome - a knowledgebase of biological ...
ion transport. 1 GO:0055114. IEA. Gene Ontology. oxidation-reduction process. 1 ... Nutrient uptake.copper uptake.reduction-based uptake.metal ion-chelate reductase (FRO). ...
ion transmembrane transport. 883. regulation of ion transmembrane transport. 426. regulation of cation transmembrane transport ... regulation of sodium ion transport. 81. regulation of sodium ion transmembrane transport. 53. ...
potassium ion transmembrane transport. 5 Molecular Function. GO term. Evidence(s). Provider(s). Description. Source(s). ... Solute transport.carrier-mediated transport.CPA superfamily.CPA-1 family.proton:cation antiporter (NHX). ...
New lithium-ion batteries could revolutionise electric vehicles · in Front Page News ... Not sure why they call it the interplanetary transport. I guess technically if it goes to Mars it could be called that. Our ... Not sure why they call it the interplanetary transport. I guess technically if it goes to Mars it could be called that. Our ... Not sure why they call it the interplanetary transport. I guess technically if it goes to Mars it could be called that. Our ...
Ion transport protein. A0L5S6. A0L5S6_MAGMM. Magnetococcus marinus MC-1. Ion transport protein. ... Ion transport protein. A0L5S6. A0L5S6_MAGMM. Magnetococcus marinus MC-1. Ion transport protein. ...
Transport to I2 ATLA GENI Backbone switch via ION 1755-1759 Yes Transport to I2 ATLA GENI Backbone switch via ION ...
Newton, S. L.; Helander, P.; Mollen, A.; Smith, H. M.: Impurity transport and bulk ion flow in a mixed collisionality ... Investigations of the role of neoclassical transport in ion-root plasmas on W7-X. In: 27th IAEA Fusion Energy Conference, EX/P8 ... Newton, S. L.; Helander, P.; Mollen, A.; Smith, H. M.; Turkin, Y.: Impurity Transport and Plasma Flow in a Mixed Collisionality ... Buller, S.; Smith, H. M.; Helander, P.; Mollen, A.; Newton, S. L.; Pusztai, I.: Collisional transport of impurities with flux- ...
Experimental study of electron heat transport in ion heated H-modes in ASDEX Upgrade. Plasma Physics and Controlled Fusion 46, ... Micro-stability and transport modelling of internal transport barriers on JET. Nuclear Fusion 43 (9), S. 975 - 981 (2003) ... Tardini, G.; Peeters, A. G.; Pereverzev, G. V.; Ryter, F.; Stober, J.; ASDEX Upgrade Team: Comparison of theory based transport ... Ryter, F.; Stäbler, A.; Tardini, G.: Core energy transport in conventional scenarios in ASDEX Upgrade. Special Issue on ASDEX ...
Probing Oxide Ion Transport in Fluorite and Perovskite Oxides for Solid Oxide Fuel Cells ... Sr and Zr transport in PLD-grown Gd-doped ceria interlayers Jeffrey C. De Vero, Katherine Develos-Bagarinao, Hirofumi Matsuda, ... Proton transport property of phosphate glass fabricated by alkali-proton substitution Tomohiro Ishiyama, Takuya Yamaguchi, ... Transport properties of proton conducting phosphate glass: an electrochemical hydrogen pump enabling the formation of dry ...
Silver ions will:. *Suffocate a microbe: Silver ions inhibits membrane transport processes*Starve a microbe: Silver ions ... AGION® silver ion antimicrobial finish has the power to suppress the growth of bacteria, fungi, yeast, algae, mold and mildew ... While not a replacement for proper cleaning practices, Agions silver ion additive is an extra precaution to help reduce ... Sterilize a Microbe: Silver ions prevent cell multiplication. Disclaimer: Antimicrobial protection is limited to the treated ...
... is affected by how ions move in the electrolyte. But they do not understand how ion transport and inhomogeneous ionic ... Imaging ion transport in a transparent electrolyte has proved highly challenging, and current techniques have been unable to ... In so doing, they have become the first team of material scientists to directly observe ion transport in electrolytes. ... Our results show that ion transport and inhomogeneous ionic concentration is critical to the formation of lithium dendrites on ...
presented a comparative study of high carrier density transport in ion-gated mono-, bi-, and trilayer graphenes using electric ... In this paper, EGFET has been employed to study the electron transport of graphene [13]. As shown in Figure 2, the bilayer ... S. C. Chen, Y.-K. Su, and J. S. Tzeng, "The fabrication and characterisation of ion-sensitive field-effect transistors with a ... J. Ye, M. F. Craciun, M. Koshino et al., "Accessing the transport properties of graphene and its multilayers at high carrier ...
... is based on a multiscale modeling approach and relies on a comprehensive physics-based description of charge/ion transport; ... Voltage-Induced Material Changes: Monte-Carlo model of ions-vacancies drift, diffusion, recombination, bond breakage, phase ...
Geant4 simulation of the ELIMED transport and dosimetry beam line for high-energy laser-driven ion beam multidisciplinary ... Features of Charge Carrier Transport in uc-Si:H/a-Si:H Superlattices. ...
"Effect of Ion Mass and Charge State on Transport Vacuum Arc Plasmas Through a Biased Magnetic Filter." IEEE Transactions on ...
The computer codes have been constructed to simulate diffusion-type transport and recombination of ions in model supersaturated ... The simulations yielded the rate constant of the ion recombination as a function of the ion concentration. The calculated rates ... The rate constant of the diffusion-controlled recombination of ions in large ensembles of nonseparable ion pairs was calculated ... A similar result has been obtained when the Jaffe model of the ion recombination in columns of ionization produced by a high ...
The product described is a battery charger for Hilti Li-ion batteries with a rated voltage of 10.8 volts. It is designed to be ... Observe the special regulations and instructions applicable to the transport, storage and use of Li-ion batteries. ... The product described is a battery charger for Hilti Li-ion batteries with a rated voltage of 10.8 volts. It is designed to be ... To avoid injury, use the charger only to charge Hilti Li-ion batteries approved for use with this charger. ...
... improve electrode-level energy density in OBEM-Li batteries by optimizing the cathode microstructure for improved ion transport ... Lithium ions flow through an ionic conductor - an electrolyte, which allows for the charging and discharging of electrons that ... "There is major concern surrounding the supply chain of lithium-ion batteries in the United States," said Yao. "In this work, we ... In an electric vehicle battery, lithium ions flow through an ionic conductor - an electrolyte, which allows for the charging ...
... their transport and intracellular concentrations and speciation, metal ion chaperones, and metal ion ionophores. Includes ... Trace Metal Transport and Homeostasis. Regulation of trace metal ions (e.g., Fe, Co, Ni, Cu, Zn, As, Se, Mo, W), ... Includes ion channel blockers such as venoms and toxins.. PIs with last names starting with A-K, contact:. Zhongzhen Nie, Ph.D. ... Motors, Filaments, and Transport. Focus is on the cytoskeleton and cytoskeleton-associated proteins. Areas of interest include ...
We have invented an alternative method where modules are connected via electric fields, allowing ions to be transported from ... Developing practical large scale quantum computers using trapped ions. Winfried Hensinger. Winfried Hensinger is Professor of ... Hensinger heads the Sussex Ion Quantum Technology Group and he is the director of the Sussex Centre for Quantum Technologies. ... Developing practical large scale quantum computers using trapped ions. discovery quantum-computing quantum ...
Researchers demonstrate the transport of sodium ions in a device at efficiency on par with commercial lithium-based batteries. ... Redwood says that the periodic table is the companys roadmap for lithium-ion battery recycling. ... New materials for designing the anode of lithium-ion batteries show less degradation over time. ...
... ions are transported via the ion-hoping mechanism where the oxygens of the Al.sub.2O.sub.3 wall are available for positive ion ... ions are transported via the ion-hoping mechanism where the oxygens of the Al2O3 wall are available for positive ion ... of ion conductivity by manipulating the chemical composition and structure of the pore wall to either increase or decrease ion ... of ion conductivity by manipulating the chemical composition and structure of the pore wall to either increase or decrease ion ...
The electron transport chain uses high-energy electrons from FADH2 and NADH to pump hydrogen ions (H+) across the inner ... As a result of the electron transport chain, there are more positively charged ions on one side of the membrane than the other ... 3. Electron transport chain (ETC). The electron transport chain is the part of aerobic cellular respiration that produces most ... After a water molecule is broken down, its hydrogen ions are used to create ATP. These hydrogen ions help an enzyme called ATP ...
Transferrins are iron binding transport proteins which can bind two Fe(3+) ions in association with the binding of an anion, ... It is responsible for the transport of iron from sites of absorption and heme degradation to those of storage and utilization. ...
Even though they do not include lithium ion transport and the potential distribution in the electrolyte phase in their model, ... Kim, U.S.; Shin, C.B.; Kim, C.-S. Modeling for the scale-up of a lithium-ion polymer battery. J. Power Sources 2009, 189, 841- ... Kim, U.S.; Yi, J.; Shin, C.B.; Han, T.; Park, S. Modeling for the thermal behavior of a lithium-ion battery during charge. J. ... Kim, U.S.; Yi, J.; Shin, C.B.; Han, T.; Park, S. Modeling the dependence of the discharge behavior of a lithium-ion battery on ...
  • Lithium (Li) metal batteries hold tremendous promise for next-generation energy storage because lithium metal negative electrodes have 10 times more theoretical specific capacity than the graphite electrodes used in commercial Li-ion batteries. (materialstoday.com)
  • Researchers know that the growth of dendrites, which are needle-like lithium whiskers that form internally in battery electrodes, is affected by how ions move in the electrolyte. (materialstoday.com)
  • Given the ongoing efforts to build Li‐ion batteries with higher volumetric energy and power densities, the research on enhancing Li‐ion transport within compressed high‐mass‐loading electrodes at fast cycling conditions is imperative. (ethz.ch)
  • Finally, hydrogels were used as membrane overlays on coated wire ion-selective electrodes that employed conventional plasticised-PVC-valinomycin based sensing membranes. (bl.uk)
  • Self-supported binder-free hard carbon electrodes for sodium-ion batteries: insights into their sodium storage mechanisms. (univ-toulouse.fr)
  • Introducing direct-current electric fields into the ground induces the "transport" of contaminants to either positive or negative electrodes where they are readily pumped out. (mit.edu)
  • Imaging ion transport in a transparent electrolyte has proved highly challenging, and current techniques have been unable to capture low ionic concentrations and ultrafast electrolyte dynamics. (materialstoday.com)
  • In an electric vehicle battery, lithium ions flow through an ionic conductor - an electrolyte, which allows for the charging and discharging of electrons that generates electricity for the vehicle. (uh.edu)
  • Starting next year, the Group will produce electrolyte formulations for lithium-ion batteries for the Chinese company Tinci. (lanxess.com)
  • The electrolyte is responsible for transporting lithium ions in the battery cell and thus is a key component of lithium-ion batteries. (lanxess.com)
  • In Li-ion batteries, Li ions (Li + ) leave the cathode during charging and move through the electrolyte and separator to intercalate into the anode. (greencarcongress.com)
  • All Li-ion cells are built with a cathode, anode, separator, and electrolyte contained in a package. (greencarcongress.com)
  • An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. (osti.gov)
  • Our Resistive Glass products preferentially attract charged particles, allowing them to be used as reflectron lenses, collision cells, capillary inlet tubes, drift cells or ion guides. (photonis.com)
  • The electric potential in this region arises from the electrical difference between two different chambers in the cochlea, which contain charged particles such as potassium and chloride ions. (ieee.org)
  • The Na(+)/K(+)-ATPase restores sodium (Na(+)) and potassium (K(+)) electrochemical gradients dissipated by action potentials and ion-coupled transport processes. (mblwhoilibrary.org)
  • ILs represent a promising group of extractants and ion carriers of metal ions in extraction and membrane separation processes. (thuoctrigiatruyenbaphuong.com)
  • Recent Advances in the Extraction of Target Metal Ions with Liquid Membrane Processes Incorporating Macrocycle Carriers. (thuoctrigiatruyenbaphuong.com)
  • But they do not understand how ion transport and inhomogeneous ionic concentration affect the morphology of lithium deposition. (materialstoday.com)
  • Our results show that ion transport and inhomogeneous ionic concentration is critical to the formation of lithium dendrites on the lithium surface. (materialstoday.com)
  • The computer codes have been constructed to simulate diffusion-type transport and recombination of ions in model supersaturated solutions with different concentrations of ionic solutes and different dielectric constants of the solution. (spie.org)
  • An enzyme called NADP+ uses these electrons and a passing hydrogen ion to build the energy-carrying molecule NADPH. (visiblebody.com)
  • For applying molecular beam techniques to study chemically reactive collisions, helping to lay the foundation for the present field of chemical dynamics, and for pioneering studies in accelerator-based atomic physics, ion-solid interactions, and the channeling of ions, electrons and positrons in crystalline solids. (ornl.gov)
  • Lithium ion sources for investigations of fast ion transport in magnetized plasmas. (escholarship.org)
  • Because of the low ion mass, beam velocities of 100-300 kms are in the range of Alfven speeds in typical helium plasmas in the large plasma device. (escholarship.org)
  • Optimization of flux-surface density variation in stellarator plasmas with respect to the transport of collisional impurities. (mpg.de)
  • Theory-based modeling of particle transport in ASDEX Upgrade H-mode plasmas, density peaking, anomalous pinch and collisionality. (mpg.de)
  • They get disassociated into anions and cations after dissolving in the soil solution (Buckman & Brady, 1960) and increase the soil pH by contributing OH- ions to the soil solution which replaces the H+ ions from the soil. (ukessays.com)
  • The recent experiments have developed data on reagent-induced changes in soil characteristics, pH level and liquidity, all of which have a bearing on how contaminants are transported in soil. (mit.edu)
  • Impact of biomass inorganic impurities on hard carbon properties and performance in Na-ion batteries. (univ-toulouse.fr)
  • The rate constant of the diffusion-controlled recombination of ions in large ensembles of nonseparable ion pairs was calculated by means of computer simulation. (spie.org)
  • The simulations yielded the rate constant of the ion recombination as a function of the ion concentration. (spie.org)
  • A similar result has been obtained when the Jaffe model of the ion recombination in columns of ionization produced by a high energy particle was analyzed. (spie.org)
  • The Jaffe kinetics agrees very well with the kinetics of recombination produced by the simulation codes only if the Jaffe rate k J of ion recombination in multi-ion pair column, which is the free parameter of the Jaffe model, approaches the Debye- Smoluchowski rate constant k DS . (spie.org)
  • As ions are transported, they become transiently trapped between intracellular and extracellular gates. (mblwhoilibrary.org)
  • The concentration of metallic ions in the upper atmosphere has a maximum in summer and a minimum in winter. (atmospheric-chemistry-and-physics.net)
  • Li was the pioneer of liquid membrane separation technique, which is found to be very effective for extracting hydrocarbons, metal ions and bio-substances from dilute aqueous solutions, especially in low concentration range. (thuoctrigiatruyenbaphuong.com)
  • In this process, both extraction and stripping steps are combined in one stage, which leads to simultaneous purification and concentration of the Cited by: Recent trends in extraction and transport of metal ions using polymer inclusion membranes (PIMs) after transport and it was suggested that the conduction band of the CuFeO 2 electrode accelerated the diffusion process of the metal ions across the membrane. (thuoctrigiatruyenbaphuong.com)
  • This Florida-based startup company has developed a drink that takes advantage of specific gastrointestinal ion transport mechanisms to alleviate side effects of nausea and vomiting due to radiotherapy. (nsbri.org)
  • Towards a better understanding of calcium transport and its relation to hypercalciuria and hypertension, Dr. Peng s laboratory is investigating molecular mechanisms of calcium absorption and reabsorption. (uab.edu)
  • Dr. Peng s group is also working on the mechanisms of WNK4 kinase activation by calcium ions. (uab.edu)
  • Core turbulent particle transport with multiple isotopes can display observable differences in behaviour between the electron and ion particle channels. (ukaea.uk)
  • This highly complex process is still not fully understood and can cause Li-ion batteries to occasionally short circuit, catch fire or even explode. (materialstoday.com)
  • The capability to visualize ion movement will help us improve the performance of all kinds of electrochemical devices - not just batteries, but also fuel cells and sensors. (materialstoday.com)
  • There is major concern surrounding the supply chain of lithium-ion batteries in the United States," said Yao. (uh.edu)
  • Yao and Zhang uncovered how to improve electrode-level energy density in OBEM-Li batteries by optimizing the cathode microstructure for improved ion transport within the cathode. (uh.edu)
  • New materials for designing the anode of lithium-ion batteries show less degradation over time. (designnews.com)
  • Researchers demonstrate the transport of sodium ions in a device at efficiency on par with commercial lithium-based batteries. (designnews.com)
  • Developed in partnership with one of the world's largest rental houses, the LPD Discharger can discharge up to four 90 Wh batteries in three hours or less, helping customers comply with the IATA regulations that state that Li-ion batteries transported as cargo must be charged to no more than 30 percent of their rated capacity. (4rfv.co.uk)
  • IDX Technology Europe has announced the launch of two new high draw Lithium Ion batteries called the ENDURA-HL9 and ENDURA-HL9S. (4rfv.co.uk)
  • Clip-Lok SimPak ® has developed a cost-effective reusable and one-way packaging for lithium-ion batteries. (clip-lok.com)
  • Our customer is a manufacturer of lithium-ion batteries used in industrial forklift trucks. (clip-lok.com)
  • Clip-Lok's solution handles three different sizes of lithium-ion batteries in one box. (clip-lok.com)
  • Furthermore, our packaging design can accommodate 4 to 12 lithium-ion batteries of different sizes in one box. (clip-lok.com)
  • They're smaller and better than existing Lithium Ion batteries. (bcmtouring.com)
  • Structural battery composites cannot store as much energy as lithium-ion batteries, but have several characteristics that make them highly attractive for use in vehicles and other applications. (bcmtouring.com)
  • The Foxnovo F-4S is a professional and practical 4-slots LCD intelligent battery charger, which is compatible with 3.7V Li-ion or 1.2V Ni-MH /Ni-CD Cylindrical rechargeable batteries. (buysku.com)
  • Only to put the batteries into the slots, the charger can recognize the Li-ion or Ni-MH /Ni-CD battery automatically, and show the present voltage, charging capacity and battery symbol jumps forward. (buysku.com)
  • Activate automatically for Li-ion batteries with protection board, which are instantaneous short circuit. (buysku.com)
  • 1. The product is ONLY used for charging Ni-MH/Ni-CD/Li-ion batteries. (buysku.com)
  • Green Car Congress recently had the opportunity to spend some time with Dr. Prabhakar Patil, the CEO of Compact Power, Inc. (CPI) shortly after GM selected CPI and its parent LG Chem as the provider for the Li-ion batteries for the Extended Range Electric Vehicle (E-REV) Chevy Volt. (greencarcongress.com)
  • In previous Li-ion batteries, microscopic amounts of manufacturing debris that are undetectable in end-of-line testing have penetrated the separator and led to fires resulting from the characteristics of the chemistries of the materials used in the battery. (greencarcongress.com)
  • In this work, we show that the rate capability of graphite elect rodes with high areal capacity of 4.5 mAh cm−2 and density of 1.79 g cm−3 (15 % of porosity) can be considerably improved by laser patterning, namely by the fabrication of arrays of vertically aligned channels serving as diffusion paths for rapid Li‐ion transport. (ethz.ch)
  • The model includes film resistance to mass transfer in both liquid films, complexation and stripping reactions at the liquid‐liquid interface in the membrane pores on both surfaces of the membrane, and metal ion/complex diffusion through the membrane. (thuoctrigiatruyenbaphuong.com)
  • In order to study the interaction of ions of intermediate energies with plasma fluctuations, two plasma immersible lithium ion sources, based on solid-state thermionic emitters (Li aluminosilicate) were developed. (escholarship.org)
  • Redwood says that the periodic table is the company's roadmap for lithium-ion battery recycling. (designnews.com)
  • LANXESS enters the field of battery chemistry by cooperating with Guangzhou Tinci Materials Technology Co. (Tinci), a leading global manufacturer of lithium-ion battery materials. (lanxess.com)
  • Roger Tillberg leads the lithium-ion battery project in Sweden and Norway. (clip-lok.com)
  • Want to hear more about our other lithium-ion battery solutions? (clip-lok.com)
  • It plays to the state's strengths, with a focus on unlocking the lithium-ion battery value chain, including its vast reserves of lithium and other high value metals and minerals crucial to booming demand. (reneweconomy.com.au)
  • An e-mobility device is a self-balancing transport device powered by a rechargeable battery pack (most commonly lithium-ion) that uses the shifting weight of the rider to balance the device. (amazon.com)
  • Their study revealed a lithium deposition process that occurs in three stages: no depletion, a partial depletion (a previously unknown stage) and full depletion of lithium ions. (materialstoday.com)
  • A double-click on switch helps eliminate the possibility of accidental operation and battery depletion while in transport. (trekbikes.com)
  • In order to study the effect that the nature of the solute has on the transport process, a single polymer matrix, poly (2-hydroxyethyl methacrylate), was initially studied. (bl.uk)
  • The effect of the chemical composition of the polymer backbone on the water structuring in the hydrogel and, consequently, transport through the membrane, was investigated by preparing a series of poly (2-hydroxyethyl methacrylate) copolymer membranes and determining the permeability coefficient of salts with a fixed anion. (bl.uk)
  • AVT is involved in the regulation of ion transport in the intestine of the sea bream (Sparus aurata). (ualg.pt)
  • The model simulations reveal that the winter-to-summer meridional circulation transports the long-lived metal ions from the winter hemisphere to the summer hemisphere. (atmospheric-chemistry-and-physics.net)
  • 28.2 DNA.repair Heavy metal transport/detoxification. (ntu.edu.sg)
  • 2 edition of extraction of metal ions using the liquid membrane process found in the catalog. (thuoctrigiatruyenbaphuong.com)
  • But the 1 nm PET membrane maintained its Li-ion selectivity with regards to alkali earth metal ions (Li + /Mg 2+ metal ions, as shown in Fig. 1c. (thuoctrigiatruyenbaphuong.com)
  • This paper reports a study on the membrane extraction of aqueous transition metal ions using commercially available Nafion gas dryer assemblies. (thuoctrigiatruyenbaphuong.com)
  • TRPV5 and TRPV6 in transcellular Ca2+ transport: regulation, gene duplication, and polymorphisms in African populations. (uab.edu)
  • A nearby specialized structure known as the stria vascularis transports the ions through its unique arrangement of electrogenic ion pumps, generating an electrochemical potential known as the endocochlear potential . (ieee.org)
  • Interlayer gap widened α-phase molybdenum trioxide as high-rate anodes for dual-ion-intercalation energy storage devices. (univ-toulouse.fr)
  • QLKNN is a surrogate model based on a database of 3 · 108 flux calculations of the quasilinear gyrokinetic transport model QuaLiKiz. (ukaea.uk)
  • This is explained in terms of the structure-making and structure-breaking characteristics of the ions in their solute-water interactions. (bl.uk)
  • I will show progress in constructing a quantum computer prototype at the University of Sussex featuring this technology and I will discuss a new method we have demonstrated recently in order to make quantum gates with trapped ions more resilient to sources of decoherence such as motional heating, stray magnetic fields and noise in electrical components. (skillsmatter.com)
  • In such systems, when there is a difference in pressure of a particular gas on opposite sides of a membrane, the gas diffuses from the side of greater pressure to the side of lesser pressure, and each gas is transported independently of other gases. (thefreedictionary.com)
  • When the IATA tightened its regulations for battery transport last year, it created a big dilemma for rental houses and international broadcasters whose customers or crews needed to fly home from a remote shoot," said Andrew Butler, Product Manager of Anton/Bauer. (4rfv.co.uk)
  • 100% brand new and high quality Portable 4-Slots Li-ion Ni-MH Ni-CD LCD Intelligent Battery Charger. (buysku.com)
  • The common denominator across all will be the battery, even though the battery characteristics are different for each of these applications and may require different Li-ion chemistries. (greencarcongress.com)
  • LG Chem has annual sales of $14.3 billion, and spends $60 million annually on Li-ion battery research and development. (greencarcongress.com)
  • LG Chem provides the Li-ion battery system for Hyundai's Blue Gen System. (greencarcongress.com)
  • Its goal is to become a full-service Tier 1 supplier of vehicle battery systems capable of designing and delivering Li-ion cells, modules and packs along with the supporting battery monitoring, wire harnesses and thermal management components. (greencarcongress.com)
  • Cathode chemistry is one of the main variables in determining Li-ion battery performance with at least eight different sub chemistries being actively pursued within the industry. (greencarcongress.com)
  • If you're travelling with a smart bag, the lithium battery must be removed before the bag can be transported as checked baggage. (finnair.com)
  • One long-standing mystery is the mechanism driving the marked seasonal dependence of metallic ions within the ionospheric sporadic E ( E s ) layers, which was first observed in the 1960s. (atmospheric-chemistry-and-physics.net)
  • Research in Dr. Peng s laboratory is centered on the mechanism and regulation of calcium transport pathways. (uab.edu)
  • We present an ultrafast neural network (NN) turbulent tokamak transport model, QLKNN, for heat and particle fluxes. (ukaea.uk)
  • presented a comparative study of high carrier density transport in ion-gated mono-, bi-, and trilayer graphenes using electric double-layer transistors [ 12 ]. (hindawi.com)
  • However, it is also observed that the mitigation and suppression of ELMs can be accompanied by an increase of the outward directed particle and energy transport influencing the plasma density and temperature dubbed the 'pump-out' effect. (uni-muenchen.de)
  • Experimental study of electron heat transport in ion heated H-modes in ASDEX Upgrade. (mpg.de)
  • Experimental Studies of Electron Transport. (mpg.de)
  • This beta also features a Turkish language bundle, experimental Javascript hardening options, fixes for pluggable transport issues, and a fix for improper update notification while extracting the bundle over an already existing copy. (torproject.org)
  • Defects in calcium transport may result in disorders such as kidney stone disease and osteoporosis. (uab.edu)
  • These hydrogen ions help an enzyme called ATP synthase add another phosphate group to ADP (adenosine diphosphate). (visiblebody.com)
  • Compared to discharge based ion sources, they are compact, have zero gas load, small energy dispersion, and can be operated at any angle with respect to an ambient magnetic field of up to 4.0 kG. (escholarship.org)
  • Users can easily comply with IATA's new Li-Ion restrictions with dedicated discharge unit. (4rfv.co.uk)
  • The term now refers to the overall process by which oxygen is abstracted from air and is transported to the cells for the oxidation of organic molecules while carbon dioxide (CO 2 ) and water, the products of oxidation, are returned to the environment. (thefreedictionary.com)
  • the BME module which is supposed to do the transport of heavy ions down to 10 MeV/n is not in the official distribution. (fluka.org)
  • i would like to know that the energy loss of kr-84 heavy ions with 20MeV/n in 5cm air thickness could be around 1GeV? (fluka.org)
  • 1524MeV per 1675MeV heavy ions leaves from 5cm air. (fluka.org)
  • To estimate the beta- and gamma-ray doses in a brick sample taken from Odaka, Minami-Soma City, Fukushima Prefecture, Japan, a Monte Carlo calculation was performed with Particle and Heavy Ion Transport code System (PHITS) code. (uchicago.edu)
  • The removal of heavy metals ions from aqueous solutions using ILs indicates an extensive and promising research area. (thuoctrigiatruyenbaphuong.com)
  • In planning for long-duration spaceflight, it will be important to accurately model the exposure of astronauts to heavy ions in the Galactic Cosmic Rays (GCR). (escholarship.org)
  • As part of an ongoing effort to improve heavy-ion transport codes that will be used in designing future spacecraft and habitats, fragmentation cross sections of 28Si have been measured using beams with extracted energies from 290A MeV to 1200A MeV, spanning most of the peak region of the energy distribution of silicon ions in the GCR. (escholarship.org)
  • We have invented an alternative method where modules are connected via electric fields, allowing ions to be transported from one module to another giving rise to much faster connection speeds. (skillsmatter.com)
  • Here we show that external K(+) ions travelling to their binding sites sense only a small fraction of the electric field as they rapidly and simultaneously become occluded. (mblwhoilibrary.org)
  • After a water molecule is broken down, its hydrogen ions are used to create ATP. (visiblebody.com)