نتایج جستجو برای: electrical conductance ec

تعداد نتایج: 263801  

Water is a unique natural resource among all sources available on earth. It plays an important role in economic development and the general well-being of the country. This study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of Jaipur in pre and post monsoon for public usage. Total eleven physico–chemical characteristics; total dis...

2010
Haiying He Ravindra Pandey Ihsan Boustani Shashi P. Karna

Electron transport properties of B-fullerenes, B80 and B100, are investigated with the use of the first-principles density functional theory (DFT), in conjunction with the Landauer-Büttiker formalism and compared with C-fullerene, C60, under similar conditions. The differential conductance and the tunnel current for B-fullerenes sandwiched between Au contacts are calculated to be much higher th...

2010
D. S. Mackay Brent E. Ewers M. M. Loranty E. L. Kruger D. Scott Mackay Michael M. Loranty Eric L. Kruger

[1] Scaling transpiration from trees to larger areas is a fundamental problem in ecohydrology. For scaling stand transpiration from sap flux sensors we asked if plot representativeness depended on plot size and location, the magnitude of environmental drivers, parameter needs for ecosystem models, and whether the goal was to estimate transpiration per unit ground area (EC), per unit leaf area (...

2002
B. E. Ewers D. S. Mackay S. T. Gower D. E. Ahl S. N. Burrows S. S. Samanta

[1] We quantified canopy transpiration (EC) using sap flux measurements representing the four major forest types (northern hardwoods, conifer, aspen/fir, and forested wetland) around the WLEF-TV tall tower in northern Wisconsin. In order to scale individual sap flux measurements to EC, we quantified the amount of sapwood area per unit ground area and the spatial distribution of sap flux within ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید صدوقی یزد - دانشکده دندانپزشکی 1387

چکیده ندارد.

Journal: :Nature nanotechnology 2009
Adam W Tsen Luke A K Donev Huseyin Kurt Lihong H Herman Jiwoong Park

The one-dimensional structure of carbon nanotubes leads to a variety of remarkable optical and electrical properties that could be used to develop novel devices. Recently, the electrical conductance of nanotubes has been shown to decrease under optically induced heating by an amount proportional to the temperature change. Here, we show that this decrease is also proportional to the initial nano...

Ghasem Ali Abarsaji Mohammad Hassan Jouri, Mohammad Mahdavi,

Soil salinity is one of the important factors which can influence the growth anddistribution of plant species. Saline and alkaline rangelands of Golestan Province, Iran withlow-deep underground water level are considered as a halophyte plant species growing area.Attempts have been made to determine soil salinity and its relationship with Frankenia hirsutaL. In order to determine the Electrical ...

Journal: :Nano letters 2006
M Teresa Gonzalez Songmei Wu Roman Huber Sense J van der Molen Christian Schönenberger Michel Calame

We propose an objective and robust method to extract the electrical conductance of single molecules connected to metal electrodes from a set of measured conductance data. Our method roots in the physics of tunneling and is tested on octanedithiol using mechanically controllable break junctions. The single molecule conductance values can be deduced without the need for data selection.

Journal: :Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging 2008
Orjan G Martinsen Sverre Grimnes Simen H Nilsen

BACKGROUND/PURPOSE Water absorption is important for the overall function of keratinized tissues like the stratum corneum and nail. Hence, measurement of water sorption dynamics and water content of these tissues is of great interest. METHODS We have studied water sorption and electrical properties of a human nail in a measuring cell where the temperature and relative hydration could be contr...

2014
Shaimaa A. Mohamed A.A. Al-Ghamdi G.D. Sharma M.K. El Mansy

Layers of ethylene carbonate (EC) modified CuI/PVA polymer composites were prepared by growth of CuI nano-particles in an aqueous solution of PVA followed by casting at room temperature. The structural, thermal, optical, electrical and di-electrical characterization of polymer composites was investigated using different techniques. These investigations confirm the growth of CuI nano-particles a...

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