標(biāo)題: Titlebook: Ion-Selective Microelectrodes and Their Use in Excitable Tissues; Eva Syková,Pavel Hník,Ladislav Vyklicky Book 1981 Plenum Press, New York [打印本頁] 作者: fumble 時(shí)間: 2025-3-21 19:50
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作者: 新星 時(shí)間: 2025-3-21 20:32
Extracellular K+ Accumulation in the Spinal Cord has been possible to measure the dynamic changes of K. in the vicinity of active neurones and fibres. This development brought a new surge of interest in the functional significance of the transient K. accumulation in the nervous system. The two main questions at that time were:作者: ascetic 時(shí)間: 2025-3-22 02:47 作者: Esophagus 時(shí)間: 2025-3-22 04:49 作者: harmony 時(shí)間: 2025-3-22 11:15
Book 1981nstitute of Physiology of the Czechoslovak Academy of Sciences as a satellite symposium of the XXVIII Interna- tional Congress of Physiological Sciences in Budapest. Sixty parti- cipants met for three days in the historical setting of the Strahov Monastery. The informal and relaxed atmosphere of the作者: 擴(kuò)音器 時(shí)間: 2025-3-22 15:49 作者: 懸崖 時(shí)間: 2025-3-22 20:34
Intracellular Potassium and Chloride Measurements in Sheep Cardiac Purkinje Fibersr two reasons, it has been a popular preparation for cardiac electrophysiologists so there is a considerable literature describing their electrophysiology and, since they exhibit relatively weak mechanical activity, they are suitable for microelectrode recording.作者: 痛苦一生 時(shí)間: 2025-3-22 21:28 作者: 我正派 時(shí)間: 2025-3-23 02:53 作者: esculent 時(shí)間: 2025-3-23 06:15
Determination of Selectivity Coefficients of Ion-Selective Microelectrodestermining the selectivity coefficients as well as a method modified from others. For this evaluation, selectivity coefficients of recessed-tip and protruded-tip Na.-selective glass microelectrodes were determined by the various methods and examined.作者: 肌肉 時(shí)間: 2025-3-23 09:44
Extracellular Potassium and Calcium Activities in the Mammalian Spinal Cord, and the Effect of Changignificance of transient variations of [K.]. and [Ca.]. for the functioning of neuronal tissue. To this end we will compare the changes of ion activity observed in mammalian central gray matter in situ, with the effects of deliberately imposed changes of ion levels in bathing media upon mammalian neural tissues maintained in vitro.作者: 四溢 時(shí)間: 2025-3-23 17:53
Sensitivity of K+-Selective Microelectrodes to pH and Some Biologically Active Substancesthers. Electrode potentials were measured in mixtures of constant ionic strength and appropriate selectivity constants were calculated — K. = 0.002, K. = 0.025, K. = 0.02, which are valid for ionic strength 0.1 mol.1. (Walker, 1971).作者: 芳香一點(diǎn) 時(shí)間: 2025-3-23 21:33
pH Related Potassium Movements in Rabbit Atriumnitiating factor in potassium loss. To investigate this, we chose an isolated rabbit atrial preparation which could be superfused with solutions of various composition while recording both intracellular and extracellular potassium activity.作者: packet 時(shí)間: 2025-3-24 00:35 作者: 機(jī)密 時(shí)間: 2025-3-24 05:17 作者: penance 時(shí)間: 2025-3-24 07:59 作者: 公豬 時(shí)間: 2025-3-24 11:09
https://doi.org/10.1007/978-1-4615-9224-2brain; cortex; depression; muscle; neurons; physiology; research; spinal cord作者: Atrium 時(shí)間: 2025-3-24 15:55
Double-Barrel Ion Selective [K+, Ca2+, Cl?] Coaxial Microelectrodes (ISCM) for Measurements of SmallDouble-barrel liquid ion-exchanger microelectrodes (ISM) are used at present to measure concentration changes in biological tissues (Lux et al., 1972; Vyklicky et al., 1972; Vysko?il et al., 1972; Hník et al., 1972; Lux and Neher, 1973; Oehme et al., 1976). The ISM (K., Ca., Cl.) have a longitudinal resistance (R.) from 200 MΩ to 2 GΩ.作者: 讓你明白 時(shí)間: 2025-3-24 20:04
978-1-4615-9226-6Plenum Press, New York 1981作者: 矛盾心理 時(shí)間: 2025-3-25 02:43 作者: fiction 時(shí)間: 2025-3-25 06:37
Book 1981(P. H. ) had the opportunity of learning the technique directly from Dr. J. L. Walker in Salt Lake City. It was thanks to his patience and, later, his courtesy in providing us with the liquid ion-exchanger for potassium and silicone that we were able to get a start in what turned out to be, in a yea作者: 命令變成大炮 時(shí)間: 2025-3-25 09:59
one of us (P. H. ) had the opportunity of learning the technique directly from Dr. J. L. Walker in Salt Lake City. It was thanks to his patience and, later, his courtesy in providing us with the liquid ion-exchanger for potassium and silicone that we were able to get a start in what turned out to be, in a yea978-1-4615-9226-6978-1-4615-9224-2作者: Jubilation 時(shí)間: 2025-3-25 13:47
F. J. Alvarez-Leefmans,T. J. Rink,R. Y. Tsien adapting yet again to newly changed political and economic circumstances. This book therefore shows that Byzantines‘ relationship with their ecology was far from static, and that Byzantines‘ decisions had environmental impacts.978-3-030-59938-6978-3-030-59936-2Series ISSN 2730-9363 Series E-ISSN 2730-9371 作者: 嬉耍 時(shí)間: 2025-3-25 18:58 作者: 道學(xué)氣 時(shí)間: 2025-3-25 21:09
Ion-Selective Microelectrodes and Their Use in Excitable Tissues作者: 保守 時(shí)間: 2025-3-26 04:11 作者: 代替 時(shí)間: 2025-3-26 06:23 作者: profligate 時(shí)間: 2025-3-26 10:14
Potassium Fluxes of Isolated Nerve Endings Monitored by a Valinomycin-Activated Ion-Selective Membrat changes of the cation continuously and without separating the particles from the suspending medium. The K.-sensitive valinomycin-electrode employed in this study has also been used by our group in previous work (Csillag and Hajós, 1980).作者: somnambulism 時(shí)間: 2025-3-26 14:02
ost-industrial luxuries than as prerequisites to full industrialization. How can we build the mansion of individual liberties demanded by the US, the countries of the Third World ask, when we live in a hut of poverty and illiteracy? The Western reply is that prosperity and democracy are mutually rei作者: intoxicate 時(shí)間: 2025-3-26 17:13
s, responsibility passes rapidly down the line until it reaches the lance-corporal and his trooper side-kick who, as the crew of the death-dealing machine, have to make the thing actually work. In the case of UNEP and the Himalaya, that crew was myself and my research assistant, Michael Warburton (M作者: Monolithic 時(shí)間: 2025-3-26 23:39
Ji?í Korytald like to emphasize that such exposure scenarios are in sharp contrast to irradiation with natural sunlight, where UVB, UVA, visible light, and infrared radiation are simultaneously delivered to human skin. Studies employing sequential irradiation protocols with, e.g., UVB plus UVA, UVA plus UVB, o作者: 賞錢 時(shí)間: 2025-3-27 01:39 作者: 反復(fù)拉緊 時(shí)間: 2025-3-27 08:58
N. K?í?,Eva Sykováonly upon simultaneous irradiation with UV or visible light, thereby causing either . (photoirritation or, in vitro, photo-cytotoxicity) or . (with the frequently used but misleading overarching term for all UV- and visible light-facilitated effects, ‘photosensitivity’; [1]).作者: 無表情 時(shí)間: 2025-3-27 09:53
E. Ujec,O. Keller,N. K?í?,V. Pavlík,J. Machek be modified by the introduction of taxes or subsidies. But prices represent information only in the most obvious and narrow sense. Decisions, even in an era of computers, are not taken by calculating machines. They are the outcome of the behaviour of people in the context of a legal, social, instit作者: 等級的上升 時(shí)間: 2025-3-27 14:38
Chin O. Leet the other extreme there are those who argue that this is a gross and pessimistic misreading of the signs; we have time to remedy the errors of our technological development (which are nowhere near as crucial as the environmentalists suggest) and there are reserves of materials and energy, and a re作者: Immortal 時(shí)間: 2025-3-27 18:51 作者: 胖人手藝好 時(shí)間: 2025-3-27 22:39
Raja N. Khuri,Samuel K. Agulianisciplinary engagement and reflexivity regarding concepts ofenvironment-society relations represented in these chapters is needed in all spheres of society—in academia, policy and practice—not the least to confront current tendencies of anti-reflexivity and denialism.??.作者: Monolithic 時(shí)間: 2025-3-28 03:21 作者: 飛來飛去真休 時(shí)間: 2025-3-28 08:32
Diana L. Kunze,John M. Russellrom it and the rise of ecology as a scientific discipline that is concerned with nature as an harmonious and dynamic system of particular relations. Other, non-Western views of nature are also considered, a survey that poses an uncomfortable question: the discrepancy between respectful ideals of the作者: Gratulate 時(shí)間: 2025-3-28 11:05 作者: 浪費(fèi)物質(zhì) 時(shí)間: 2025-3-28 15:33
András Csillagties (Thompson and Grime 1979; Roberts 1981; Mallik et al. 1984; Simpson et al. 1989; Thompson et al. 1997; Miller and Cummins 2001; Lemenih and Teketay 2006; Tessema et al. 2011b; Mall and Singh 2001; Hong et al. 2012) and the similarity between the soil seed bank and aboveground vegetation (Tessem作者: 過渡時(shí)期 時(shí)間: 2025-3-28 21:06
for waste minimisation and waste to wealth paradigm shift and addresses ‘end-of-life’ issues. Emphasis should be laid on ecosystem protection and reduction in the waste and greenhouse gas emission within the limits of the carrying capacity of the ecosystem. Under no circumstances, the biodiversity 作者: cipher 時(shí)間: 2025-3-28 23:29 作者: Callus 時(shí)間: 2025-3-29 03:05
G. Somjen,R. Dingledine,B. Connors,B. Allen pH, to define the reference levels of aluminum (24439?mg/kg), barium (161?mg/kg), copper (29?mg/kg) and zinc. (552mg/kg). kg), considering UCL95 as the background level since it presented a better statistical fit with respect to the descriptive statistics. However, the expression .was used to estab作者: Dungeon 時(shí)間: 2025-3-29 09:45 作者: intrude 時(shí)間: 2025-3-29 13:56 作者: Aqueous-Humor 時(shí)間: 2025-3-29 17:07
New Ion Selective Liquid Membrane Microelectrodese of microelectrodes with different selectivities available. Especially the development of electrically neutral ionophores led to clear improvements in selectivities and detection limits. Here we report on the present possibilities in the use of ion-selective liquid membrane microelectrodes.作者: neutrophils 時(shí)間: 2025-3-29 21:33
Sensitivity of K+-Selective Microelectrodes to pH and Some Biologically Active Substanceshanger located in the shank of a glass micropipette tip (Walker, 1971). For potassium ISM, an organic resin Corning code 477317 was used as the ion-exchanger. This ion-exchanger employs 1-2-dimethyl-3-nitrobenzen for dissolving 2g/100 ml potassium tetra-kis (p-chlorophenyl)borate (Baum and Wise, 197作者: Budget 時(shí)間: 2025-3-30 02:58
Determination of Selectivity Coefficients of Ion-Selective Microelectrodes ability of a given ion-selective microelectrode to distinguish between the primary ion and the interfering ion. For the measurements of intracellular Na, Ca, Cl, and extracellular K ion activities, it is necessary to determine accurately the selectivity coefficient of each microelectrode because in作者: 淺灘 時(shí)間: 2025-3-30 04:35
Intracellular Potassium and Chloride Measurements in Sheep Cardiac Purkinje Fibersse them to measure intracellular potassium and chloride activities, a.(K) and a.(Cl), in sheep cardiac Purkinje fibers. This preparation was chosen for two reasons, it has been a popular preparation for cardiac electrophysiologists so there is a considerable literature describing their electrophysio作者: perjury 時(shí)間: 2025-3-30 12:05
Intracellular Electrochemical Potentials: Skeletal Muscle ,. Epithelial Steady-State ,. Kineticsion. Direct and reliable determination of the in-situ ionic composition of the intracellular environment is an essential prerequisite for our understanding of such basic phenomena as transmembrane electrical potentials, enzyme activity and membrane transport.作者: Pageant 時(shí)間: 2025-3-30 12:45
Measurement of Intracellular Calcium Activities1-ethoxycarbonyl)undecyl N,N′ 4,5 tetramethyl-3,6-dioxaoctane diacid diamide designed and synthetized by Simon (Simon et al., 1978). We have developed a liquid ion-exchanger microelectrode using this neutral carrier as the calcium selective component to measure intracellular Ca. activities in rat so作者: 災(zāi)難 時(shí)間: 2025-3-30 16:50
pH Related Potassium Movements in Rabbit Atriumo and in vitro preparations (Adler and Fray, 1977). Potassium appears to leave the cells of both skeletal and cardiac muscle when extracellular acidosis is produced and to enter the cells under conditions of extracellular alkalosis. There has as yet been no explanation for the mechanism of the excha作者: 委屈 時(shí)間: 2025-3-30 20:49
Intracellular Free Calcium Affects Electric Membrane Properties. A Study with Calcium-Selective Microne would wish to have a measure of steady state and transient changes of intracellular free Ca ([Ca].). Estimates by various methods suggest that the resting level of [Ca]. is at least 5 orders of magnitude lower than the value expected from a passive distribution (for review see Ashley and Campbel作者: CAPE 時(shí)間: 2025-3-31 01:08
Measurement of Free Ca2+ in Nerve Cell Bodiesal to give the differential signal, and calculate from that the free ion concentration. In practice, particularly with Ca., it is not so straightforward and here we outline some of the problems to be overcome and precautions needed in obtaining believable data, and summarize some of the results we h作者: Bumptious 時(shí)間: 2025-3-31 06:50
Intracellular Recording of Potassium in Neurons of the Motor Cortex of Awake Cats Following Extracelinput resistance (Krnjevi? et al, 1971; Woody et al, 1976; Woody et al, 1978). These effects can be prevented by local application of atropine, a muscarinic blocking agent (Swartz and Woody, 1979). The cells that respond in this way include pyramidal cells of Layer V, the neurons whose axons form th作者: Traumatic-Grief 時(shí)間: 2025-3-31 10:40
Potassium Fluxes of Isolated Nerve Endings Monitored by a Valinomycin-Activated Ion-Selective Membraisms. Their ability to build up and maintain ionic gradients by active transport has been described by several groups. Synaptosomes have been shown to have membrane potentials (Blaustein and Holdring, 1975; Hanson et al., 1980) which could primarily be regarded as potassium diffusion potential (Blau作者: 仔細(xì)閱讀 時(shí)間: 2025-3-31 16:02
Extracellular K+ Accumulation in the Spinal Cordeen used in recent years to show that normal neuronal activity causes K. to accumulate in the narrow clefts separating the cellular elements. However, it was not until the K. — selective microelectrodes with liquid ion exchanger — Corning code 477317 had been developed by J.L. Walker in 1971 that it
