نتایج جستجو برای: electrical conductivity

تعداد نتایج: 229856  

Journal: :Physiological measurement 2014
M Kranjc F Bajd I Serša D Miklavčič

The electroporation effect on tissue can be assessed by measurement of electrical properties of the tissue undergoing electroporation. The most prominent techniques for measuring electrical properties of electroporated tissues have been voltage-current measurement of applied pulses and electrical impedance tomography (EIT). However, the electrical conductivity of tissue assessed by means of vol...

Journal: :Nano letters 2012
Ruiting Zheng Jinwei Gao Jianjian Wang Shien-Ping Feng Hiroko Ohtani Jinbo Wang Gang Chen

Different from the electrical conductivity of conductive composites, the thermal conductivity usually does not have distinctive percolation characteristics. Here we report that graphite suspensions show distinct behavior in the thermal conductivity at the electrical percolation threshold, including a sharp kink at the percolation threshold, below which thermal conductivity increases rapidly whi...

Journal: :international journal of nanoscience and nanotechnology 2014
a. afsari m.a. ranaei

in this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ecap) up to eight passes at room temperature. the effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. the microstructure evolution was followed by optical microscope and field emission scanning el...

2004
J. P. Huang

Conductive organic polymers can be formulated with polymers that incorporate fine dispersed metallic particles. In this work, we present a general model for ferrogels which are chemically cross-linked polymer networks swollen with a ferrofluid. Our aim is to study the effect of the shape and/or material (conductivity) anisotropy on the effective electrical conductivity of the ferrogel in the pr...

2015
Jun-Hao LIU Guo-Hua ZHANG

Electrochemical nature of metallurgical reaction arouses more and more attentions, and the most closely related is the electrical conductivity of molten slag. The electrical conductivity of molten slag is not only an important physical property that plays a prominent role in modeling and operating the electric smelting furnace and optimizing the metallurgical process, but also important for und...

2017
Jiai Ning Di Wu Degang Zhao

Thermoelectric (TE) materials are a kind of energy material which can directly convert waste heat into electricity based on TE effects. Ternary Cu2SnSe3 material with diamond-like structure has become one of the potential TE materials due to its low thermal conductivity and adjustable electrical conductivity. In this study, the Cu2SnSe3 powder was prepared by vacuum melting-quenching-annealing-...

D. K. Burghate M. D. Choudhary S. R. Kargirwar S. R. Thakare,

The study reports some preliminary investigations on the template free synthesis of a scantly investigated polyaniline (PANI) derivative-Phenylenediamine (PDA) by template free method in the presence of Oxalic acid (OA) (dopant), using Ammonium Persulfate as oxidant. Polymerization of Phenylenediamine (PDA) was confirmed by the FT-IR as well as UV–visible studies. The morphology of Phenylenedia...

In this paper electrical conductivity measurements and optical investigations takes place in AOT/ heptane/ (water or aqueous) systems. The water in oil system prepared with adding water in 50% by weight of AOT/ heptane solution.  In other systems instead of water, aqueous solutions of 1) zinc acetate and water 2) Potassium Hydroxide and water were used. In each phase, the trend of the electrica...

2011
Beilei Xiao Mingyou Wang Lixia Liu

After being affected by naturally low temperature (-4~0°C), the changes of relative electrical conductivity and MDA content of 11 fennel varieties were tested. The experiment studied the relationship between the cold resistance and changes of relative electrical conductivity and MDA content of varieties. The results showed that the relative electrical conductivity and MDA content were higher th...

1994
Andy ADLER Robert GUARDO Yves BERTHIAUME

Electrical Impedance Tomography uses surface electrical measurements to image changes in the conductivity distribution within a medium. This technique was applied to the measurement of gastric motility by imaging conductivity changes in the abdomen after ingestion of liquid. Preliminary results show good correlation with typical clinical measurements. composition, and caloric content have a lar...

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