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  • 1
    Online Resource
    Online Resource
    Milton :Taylor & Francis Group,
    Keywords: Molecular neurobiology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (429 pages)
    Edition: 1st ed.
    ISBN: 9781000403749
    Series Statement: Methods in Signal Transduction Series
    DDC: 591.188
    Language: English
    Note: Intro -- Half Title -- Series Page -- Title Page -- Copyright Page -- Contents -- Preface -- Editors -- Contributors -- 1. Endogenous Activation and Neurophysiological Functions of Acid-Sensing Ion Channels -- 1.1 Introduction -- 1.2 Endogenous Conditions That May Activate ASICs -- 1.2.1 Metabolic Production of Protons -- 1.2.1.1 Carbon Dioxide -- 1.2.1.2 Lactate -- 1.2.2 Acidification Niche and Proton Generators -- 1.2.2.1 Na+/H+ Exchangers (NHEs) -- 1.2.2.2 Hydrogen Voltage-Gated Channel 1 (Hv1) -- 1.2.2.3 Carbonic Anhydrases (CAs) -- 1.3 ASICs and Neurophysiological Functions -- 1.3.1 Synaptic Development -- 1.3.2 Synaptic Plasticity -- 1.3.3 Regional Specific Functions of ASICs -- 1.3.3.1 Amygdala -- 1.3.3.2 Retina -- 1.3.3.3 Dorsal Root Ganglia (DRG) -- 1.4 Summary and Outlook -- Acknowledgements -- References -- 2. Acid-Sensing Ion Channels and Synaptic Plasticity: A Revisit -- 2.1 Introduction -- 2.2 Protons and ASICs in Synaptic Transmission -- 2.2.1 Protons Act as a Neurotransmitter in Synaptic Signaling -- 2.2.2 Modulation of Synaptic Transmission by ASICs -- 2.3 ASIC1a in Synaptic Plasticity -- 2.3.1 ASIC1a in LTP -- 2.3.1.1 Hippocampus -- 2.3.1.2 Amygdala -- 2.3.1.3 ACC -- 2.3.2 ASIC1a in LTD -- 2.3.2.1 Hippocampus -- 2.3.2.2 Insular Cortex -- 2.4 ASICs in Synaptic Remodeling -- 2.5 Summary and Future Perspectives -- Acknowledgements -- References -- 3. Trimeric Scaffold Ligand-Gated Ion Channels -- 3.1 An Introduction of Trimeric Scaffold of Ligand-Gated Ion Channels (TS-LGICs) -- 3.2 Subunit Stoichiometry and Single Subunit Architecture of P2X Receptors and ASIC Channels -- 3.3 Ion Permeation Pathway of P2X Receptors and ASIC Channels -- 3.4 Ligand Recognitions of P2X Receptors and ASIC Channels -- 3.5 Coordinated Allostery During Channel Activation of P2X Receptors and ASIC Channels. , 3.6 Ionic Selectivity of P2X Receptors and ASIC Channels -- 3.7 Architecture and Function of the Intracellular Domain of P2X Receptors and ASIC Channels -- 3.8 Other Endogenous or Exogenous Agonists of P2X Receptors and ASIC Channels -- 3.9 Perspectives -- Acknowledgments -- References -- 4. Eukaryotic Mechanosensitive Ion Channels -- 4.1 Introduction -- 4.1.1 MS and Novel MA Ion Channels-Concepts and Physiology -- 4.1.1.1 ASICs -- 4.1.1.2 TRP Channels -- 4.1.1.3 TMEM150C -- 4.1.1.4 TMEM63 (OSCA) -- 4.1.1.5 TMEM120A (TACAN) -- 4.1.1.6 TMEM87A (Elkin1) -- 4.1.2 Piezo Channels-Physiology and Activation Insights -- 4.1.2.1 Piezo Channels Are Bona fide Mechanically Activated Ion Channels -- 4.1.2.2 Structures and Activation Mechanisms of Piezo Channels -- 4.1.2.3 Physiology of Piezo Channels -- 4.2 Conclusion and Future Directions -- References -- 5. Ion Channels in Human Pluripotent Stem Cells and Their Neural Derivatives -- 5.1 Introduction -- 5.1.1 Derivation of Neurons and Glia from hPSCs -- 5.1.2 Models to Study Ion Channel Properties of hPSC Derived Neurons and Glia -- 5.2 Ion Channels in hPSCs -- 5.3 Ion Channels in hPSC Neural Derivativesin Vitro and in Vivo -- 5.3.1 Human PSC-Derived Multipotent Neural Progenitor Cells (NPCs) -- 5.3.2 Human PSC-Derived Excitatory Cortical Neurons -- 5.3.3 Human PSC-Derived GABAergic Interneurons -- 5.3.4 Human PSC-Derived Dopaminergic Neurons -- 5.3.5 Human PSC-Derived Motor Neurons -- 5.3.6 Human PSC-Derived Sensory Neurons -- 5.3.7 Human PSC-Derived Serotonin Neurons -- 5.3.8 Human PSC-Derived Glial Cells -- 5.3.9 Human PSC-Derived Cells in Transplantation Models -- 5.3.10 Two-Dimensional Human Cell Culture and Cell Transplantation as Models to Study Channelopathy -- 5.4 Ion Channels in hPSC-Derived Brain Organoids -- 5.4.1 Ion Channels in Brain Organoids. , 5.4.2 Ion Channels in Sensory Organ-Specific Organoids -- 5.4.3 Organoids as a Model to Study Channelopathies -- 5.5 Concluding Remarks -- References -- 6. Exocytosis of Nonclassical Neurotransmitters -- 6.1 Introduction -- 6.2 Ca2+ Triggering of Classical Neurotransmitter (Glutamate and γ-Aminobutyric Acid, GABA) Vesicle Exocytosis at Synapses -- 6.3 Synaptotagmins as Ca2+ Sensors for Exocytosis -- 6.4 Three Modes of Synaptic Release and Their Respective Calcium Sensor(s) -- 6.4.1 Synchronous Release -- 6.4.2 Asynchronous Release -- 6.4.3 Spontaneous Release -- 6.5 Nonclassical Neurotransmitters and Neuropeptide Release -- 6.6 Monoamine Neurotransmitters -- 6.6.1 Dopamine -- 6.6.2 Norepinephrine -- 6.6.3 Serotonin -- 6.7 Neuropeptide Exocytosis -- 6.7.1 Oxytocin -- 6.7.2 Neuropeptide Y (NPY) -- 6.8 Neuro-endocrine Exocytosis -- 6.9 Summary and Outlook -- References -- 7. Nonclassical Ion Channels in Learning and Memory -- 7.1 Introduction -- 7.2 Main Text -- 7.2.1 Distribution and Activation of ASICs -- 7.2.2 ASIC1a in Spatial Learning and Memory -- 7.2.3 ASIC1a in Fear Learning and Memory -- 7.2.4 ASIC1a in Extinction Learning and Memory -- 7.2.5 ASIC1a in Appetitive Learning and Memory -- 7.2.6 ASIC1a in Procedural Learning and Memory -- 7.3 Summary -- Acknowledgments -- References -- 8. Neuropeptide Regulation of Ion Channels and Food Intake -- 8.1 Central Neuropeptide-Producing Neurons in the Control of Food -- 8.1.1 Neurons That Synthesize AgRP and POMC in the ArcuateNucleus of the Hypothalamus -- 8.1.2 Oxytocin Neurons in the Paraventricular Nucleus of the Hypothalamus -- 8.1.3 Neurons That Synthesize Melanin-Concentrating Hormone and Orexin in Lateral Hypothalamus -- 8.1.4 Neuropeptide-Producing Neurons in the Nucleus of the Solitary Tract -- 8.2 Ion Channels in the Neuropeptide Modulation of Neuronal Activity and Neurotransmitter Release. , 8.2.1 G-protein Coupled Receptors -- 8.2.2 Inwardly Rectifying Potassium Channels -- 8.2.3 ATP-Sensitive Potassium Channels -- 8.2.4 Non-Selective Cation Channels -- 8.2.5 Voltage-Gated Calcium Channel and Neurotransmitter Release -- 8.3 Neuropeptide Receptors and Ion Channels in Developing Pharmacotherapy in Obesity -- 8.3.1 Dysfunctional Neuropeptide Signaling in Obesity -- 8.3.2 Dysfunctional Neuropeptide Modulation of Ion Channels in Obesity -- 8.3.3 Drugs Target Neuropeptide Receptors and Ion Channels for the Treatment of Obesity -- References -- 9. Prefrontal Inhibitory Signaling in the Control of Social Behaviors -- 9.1 Introduction -- 9.2 The Function of the mPFC in Social Interaction Behavior -- 9.2.1 Correlation Between the mPFC and Social Interaction -- 9.2.2 Causal Role of the mPFC in Social Interaction -- 9.3 Prefrontal Inhibition Is Crucial for Social Interaction -- 9.3.1 Evidence from Human Clinical Studies -- 9.3.2 Evidence from Animal Models of Diseases -- 9.3.3 Restoration of Prefrontal Cortical Inhibition Rescues Social Impairments -- 9.4 IN Subtype-Differential Modulation on Social Behavior -- 9.4.1 A Comparison Between PV INs and SST INs -- 9.4.2 PV INs in the mPFC Are Necessary for the Control of Sociability -- 9.4.3 SST INs in the mPFC Are Required for Emotion Discrimination -- 9.5 Perspectives -- Acknowledgments -- References -- 10. Studying Brain Function Using Non-human Primate Models -- 10.1 Studying High-level Visual Processing Research Using Non-human Primate Models -- 10.1.1 Object and Face Recognition in NHPs -- 10.1.2 Visual-Guide Motion in NHPs -- 10.2 Studying Vocal Communication and Auditory Function Using the Marmoset Monkey -- 10.2.1 Marmosets' Vocal Communication -- 10.2.2 Marmosets' Auditory System -- 10.3 Studying Prosocial Behavior Using the Marmoset Monkey -- 10.3.1 Prosocial Behaviors in Marmoset. , 10.3.2 The Role of Hormones in Prosocial Behavior -- 10.4 Studying Self-awareness Using the Non-human Primate Model -- 10.4.1 The History of MSR in Non-human Primates -- 10.4.2 The Secret of MSR: Multisensory Integration -- 10.5 Transgenic Research in the Non-human Primate Model -- 10.5.1 Transgenic NHPs History -- 10.5.2 The Application of Transgenic NHPs -- 10.6 Conclusion -- References -- 11. Application of In Vivo Ca2+ Imaging in the Pathological Study of Autism Spectrum Disorders -- 11.1 The Biology of Ca2+ -- 11.2 Genetically Encoded Ca2+ Indicators (GECIs) -- 11.3 Two-Photon Ca2+ Imaging -- 11.4 Miniature Single-Photon Fluorescence Microscope -- 11.5 The Application of Miniature Single-Photon Fluorescence Microscopes in Neuroscience Research -- References -- 12. Nonclassical Ion Channels in Depression -- 12.1 Introduction -- 12.2 Neuroplasticity for Depression -- 12.3 HCN Channels in Depression -- 12.4 ASICs in Depression -- 12.5 P2XRs in Depression -- 12.6 TRP Channels in Depression -- 12.7 TREK1 in Depression -- 12.8 Implications -- References -- 13. Ion Channels of Reward Pathway in Drug Abuse -- 13.1 Transient Receptor Potential Channels -- 13.2 Acid-Sensing Ion Channels -- 13.3 Hyperpolarization-Activated Cyclic Nucleotide--Gated (HCN) Channels -- 13.4 P2X Receptors -- 13.5 γ-Aminobutyric Acid Type A (GABAA) Receptors -- Acknowledgment -- References -- 14. Ion Channel Conformational Coupling in Ischemic Neuronal Death -- 14.1 Introduction -- 14.2 Ion Conduction-Independent Functions of Ion Channels -- 14.3 Conformational Changes of ASIC1a Mediate Ischemic Neuronal Necroptosis -- 14.3.1 ASIC1a-Mediated Acidic Neuronal Death Is Independent from Ca2+ Signaling -- 14.3.2 Exposure of CP-1 Cytotoxic Motif Is Essential for ASIC1a-Mediated Neuronal Death -- 14.3.3 RIPK-1 Plays a Key Role in ASIC1a-Mediated Acidotoxicity. , 14.3.4 ASIC1a Mediates Neuronal Necroptosis in Ischemic Brain.
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 8363-8367 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Grain growth in ZnO ceramics with various valence states of added manganese and cobalt was studied. The results were discussed by means of defects produced by the additions. The grain growth was analyzed from the kinetic grain growth equation: R¯n/t = Γo expR¯n/t=Γo exp( − E/RT). In this work, the grain growth kinetic exponent n was 6 and the activation energy was 301±35 kJ/mol. The grain size increased with the valence states of manganese and cobalt. The addition of CoOx affected not only the mean grain size, grain growth kinetic exponent, and activation energy, but also inhibited the effects of Bi2O3-liquid phase sintering.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 83 (2000), S. 0 
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The dielectric properties of (Ba0.6Sr0.4)TiO3 and Al2O3-doped (Ba0.6Sr0.4)TiO3 have been characterized. The grain size of the specimen is maximum for (Ba0.6Sr0.4)TiO3 that has been doped with 1 wt% Al2O3. The density and the real part of the relative dielectric constant each decrease as the Al2O3 content increases. The loss factor is minimum for (Ba0.6Sr0.4)TiO3 that has been doped with 2 wt% Al2O3. The dielectric constant of the specimens decreases as the applied dc field increases. The influence of the dc field on the loss factor is much less than that on the dielectric constant. The tunability is ∼24% for (Ba0.6Sr0.4)TiO3 that has been doped with 1 wt% Al2O3.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 34 (1986), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The fdhF gene of Escherichia coli, coding for at least one component of benzyl viologen-linked formate dehydrogenase (FDH-BV) activity, was isolated on a ColE1-fdhF hybrid plasmid from the Clarke and Carbon colony bank.Endonuclease restriction maps of this plasmid and its pBR322-subcloned derivative, pLW06, were constructed. Various hybrid plasmids were further obtained by deletion of endonuclease-cleaved fragments from pLW06 DNA. Their complementation pattern was analyzed after introduction into different fdhF mutant strains. The fdhF gene was shown to be located on a 5.5 kb BamHI-PvuII-DNA fragment, which restored FDH-BV activity to the wild-type level.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The trimethylamine N-oxide (TMAO) reductase of Escherichia coli is a molybdoenzyme that catalyses the reduction of the TMAO to trimethylamine (TMA) with a redox potential of + 130 mV. We have successfully substituted the molybdenum with tungsten and obtained an active tungsto-TMAO reductase. Kinetic studies revealed that the catalytic efficiency of the tungsto-substituted TMAO reductase (W-TorA) was increased significantly (twofold), although a decrease of about 50% in its kcat was found compared with the molybdo-TMAO reductase (Mo-TorA). W-TorA is more sensitive to high pH, is less sensitive to high NaCl concentration and is more heat resistant than Mo-TorA. Most importantly, the W-TorA becomes capable of reducing sulphoxides and supports the anaerobic growth of a bacterial host on these substrates. The evolutionary implication and mechanistic significance of the tungsten substitution are discussed.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Molecular microbiology 9 (1993), S. 0 
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The complete nucleotide sequence of the Escherichia coli nik locus, which has been suggested to encode the specific transport system for nickel, has been determined. It was found to contain five overlapping open reading frames that form a single transcription unit. Deduced amino acid sequence of the nik operon shows that its five gene products, NikA to NikE, are highly homologous to components of oligopeptide-and dipeptide-binding protein-dependent transport systems from several Gram-negative and Gram-positive species. NikA represents the periplasmic binding protein, NikB and NikC are similar to integral membrane components of periplasmic permeases, and NikD and NikE possess typical ATP-binding domains that suggest their energy coupling role to the transport process. Insertion mutations in nik genes totally abolished the nickel-containing hydrogenase activity under nickel limitation and markedly altered the rate of nickel transport. Taken together, these data support the notion that the nik operon encodes a typical periplasmic binding-protein-dependent transport system for nickel.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 173 (2000), S. 319-324 
    ISSN: 1432-072X
    Keywords: Hydrogenase Metalloenzyme Folding Enzyme complex Signal peptide Twin-arginine Membrane targeting Cotranslocation Sec system Mtt/Tat system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Periplasmic or membrane-bound bacterial hydrogenases are generally composed of a small subunit and a large subunit. The small subunit contains a peculiar N-terminal twin-arginine signal peptide, whereas the large subunit lacks any known targeting signal for export. Genetic and biochemistry data support the assumption that the large subunit is cotranslocated with the small subunit across the cytoplasmic membrane. Indeed, the signal peptide carried by the small subunit directs both the small and the large subunits to the recently identified Mtt/Tat pathway, independently of the Sec machinery. In addition, the twin-arginine signal peptide of hydrogenase is capable of directing protein import into the thylakoidal lumen of chloroplasts via the homologous ΔpH-driven pathway, which is independent of the Sec machinery. Therefore, the translocation of hydrogenase shares characteristics with the ΔpH-driven import pathway in terms of Sec-independence and requirement for the twin-arginine signal peptide, and with protein import into peroxisomes in a "piggyback" fashion.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1572-8935
    Keywords: Banana-shape ; Ferroelectricity ; Smectic blue phase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A series of ferroelectric liquid crystal polymers having banana-shaped side chain mesogens were synthesized through photo-polymerization of epoxide moiety. 2,5-disubstituted-thiophene sub-unit was used in synthesizing the banana-shaped monomers. These liquid crystal compounds were characterized by NMR, differential scanning calorimetry (DSC) and optical polarized microscopy (POM). Mesomorphism was investigated as a function of spacer units. All the synthesized low molar mass banana-shaped compounds exhibit smectic blue phase, but chiral smectic C phase could be observed only on compounds having longer spacer. The clearing temperature of low molar mass compounds fluctuated a little when spacer length varies. All polymers exhibit cholesteric mesophase and an observable glass transition. These liquid crystalline compounds reveal strong photoluminescence at visible region (λmax = 475 nm for M9EPX) and have potential use in polarized organic light emitting diode materials.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 123 (1988), S. 387-409 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A gas sampler with lead shield has been designed for transferring the grab gas sample taken from the sampling station of Taiwan nuclear power reactor. The methods involving gas chromatography and gamma spectrometry have been developed for the determination of fission gases. A gas chromatograph equipped with TCD was used for measurement of gas composition. Column requirements are identified and optimum operating conditions are discussed. A single analysis is completed within 25 minutes for all of the gas constitutents and 12 minutes for only Xe and Kr. The detection limit is 0.005 mm partial pressure for Kr and Xe and a precision of ±1% relative is achieved for all the sample constituents. Combined error determinations for the method denote an attainable accuracy of less than ±2% for constituents at a sample pressure above 10 mm. Mixing and dispensing of the radioactive gases were carried out in a special gas mixing line. In experiment, calibration factors for measurement of133Xe and85Kr in ampules are determined in an isotope calibrator and by Ge(Li) gamma ray spectrometry. The relative precisions of 0.14% and 0.5% are readily achieved for85Kr and133Xe, respectively. The calibration uncertainty in85Kr measurement is 0.4%.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 130 (1989), S. 21-37 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A chemical process for the separation of147Nd/147Pm from fission products of synthetic radioactive waste solution has been developed. The process includes: (1) denitration, (2) removal of high concentration of uranium by 30% TBP/kerosene extraction, (3) removal of95Nb,103Ru,137Cs and part of90Sr by 50% TBP/dodecane extraction, (4) separation of147Nd/147Pm from part of90Sr and95Zr by oxalic acid precipitation, and (5) removal of144Ce by mixture of 0.4M D2EHPA and 0.2M TBP extraction. Experimental results indicate that the recovery of147Nd/147Pm in the final separated solution is about 90%. The purification of147Nd and147Pm from some other rare earth elements, viz.153Sm,154Eu and144Ce was further investigated by using a Dowex 50W×8 ion-exchanger. Parameters of flow rate, eluent concentration and pH were examined. The results show that the recovery and radionuclide purity of147Nd plus147Pm under the present separation conditions are 77.8% and 98.6% for diethylenetriaminepentaacetic acid (DTPA) and 87.3% and 99.5% for nitrilotriacetic acid (NTA), respectively.
    Type of Medium: Electronic Resource
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