نتایج جستجو برای: variable conductance

تعداد نتایج: 295935  

2003
F. C. MEINZER

The present study examines the manner in which several whole-tree water transport properties scale with speciesspecific variation in sapwood water storage capacity. The hypothesis that constraints on relationships between sapwood capacitance and other water relations characteristics lead to predictable scaling relationships between intrinsic capacitance and whole-tree behaviour was investigated...

ربانی, حسن, علیپور, یوسف, مردانی, محمد,

In this paper, the electronic conductance of a polyacetylene polymer embedded between two simple chains is studied by using transfer matrix method within the tight-binding and first neighbor approach. Also, by adding benzene molecules to polyacetylene we obtain the system conductance in its conversion to polystyrene polymer. The results show that as the number of benzene molecules in the middle...

Journal: :international journal of nano dimension 0
j. jahanbin sardroodi molecular simulation lab., azarbaijan shahid madani university, tabriz, iran. s. afshari molecular simulation lab., azarbaijan shahid madani university, tabriz, iran. a. r. rastkar ebrahimzadeh molecular simulation lab., azarbaijan shahid madani university, tabriz, iran. m. abbasi molecular simulation lab., azarbaijan shahid madani university, tabriz, iran.

the quantum transport computations have been carried on four different width of zigzag graphene using a nonequilibrium green’s function method combined with density functional theory. the computed properties are included transmittance spectrum, electrical current and quantum conductance at the 0.3v as bias voltage.  the considered systems were composed from one-layer graphene sheets differing w...

Journal: :Thorax 1998
P G Middleton E W Alton

Since 1989 when the gene responsible for cystic fibrosis was cloned and designated the cystic fibrosis transmembrane conductance regulator (CFTR) gene, considerable progress has been made in the development of gene therapy for this disease. Clinical trials have already been performed using cationic liposome and adenoviral based gene transfer systems, measuring the safety and efficacy of this ne...

Journal: :Neuron 2002
Harrison C. Walker J.Josh Lawrence Chris J. McBain

Mossy fiber (MF) and CA3 collateral (CL) axons activate common interneurons via synapses comprised of different AMPA receptors to provide feedforward and feedback inhibitory control of the CA3 hippocampal network. Because synapses potentially occur over variable electrotonic distances that distort somatically recorded synaptic currents, it is not known whether the underlying afferent-specific s...

Journal: :The journal of physical chemistry. B 2005
Brian L Wehrenberg Dong Yu Jiasen Ma Philippe Guyot-Sionnest

Conduction in thin films of PbSe nanocrystals doped by electrochemical gating has been studied. Charging the film, with either electrons or holes, increases the conductance by orders of magnitude. The electrons in the 1S(e) state of nanocrystals in these films have a mobility as high as 5.0 x 10(-3) cm(2) V(-1) s(-1). Electrons in the 1P(e) state were found to have a differential mobility up to...

Journal: :Psychiatry research 2016
Alexandra Kleiman Karen Anne Kramer Ingo Wegener Anne Sarah Koch Franziska Geiser Katrin Imbierowicz Berndt Zur Rupert Conrad

Considering that impaired coping with stress is closely linked with emergence of stress-sensitive disorders most notably in alexithymic individuals, we conducted the first study examining stress-related autonomic reactivity in alexithymic pain disorder patients. Twenty-one pain disorder patients with high and an equivalent patient group with low alexithymia scores were exposed to three types of...

2004
Terrance P. Snutch Jean Peloquin Eleanor Mathews John E. McRory

Native Voltage-Gated Ca Channels Early electrophysiological recordings from neurons, muscle and endocrine cells revealed voltage-activated calcium (Ca) currents with distinct characteristics, suggesting the existence of two major classes of Ca2+ channels based upon the membrane potentials at which they first open (see chapter by Tsien); low-voltage activated (LVA) and high-voltage activated (HV...

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