نتایج جستجو برای: surface area density

تعداد نتایج: 1491039  

     This current research was investigated the long – term effects of fire on vegetation and regeneration of beech (Fagus orientalis L.) in the mountain forest in Lesakoti forests in Tonekabon city in north of Iran. In both of burnt and unburnt areas, 30 plots 1000m2 and in total 60 sampling plots were identified using random-systematic 100 m × 150 m grid and density and DBH of trees and densi...

Journal: :Nanoscale research letters 2016
Yan Zhang Xuejin Li Jufeng Huang Wei Xing Zifeng Yan

Petroleum coke is a valuable and potential source for clean energy storage if it could be modified legitimately and facilely. In the present study, porous carbon with high surface area and abundant oxygen-containing groups was prepared from petroleum coke by chemical activation and modification processes. The as-prepared carbon exhibits a high surface area (1129 m(2) · g(-1)) and stable microgr...

Journal: :ACS nano 2012
Konstantinos Gerasopoulos Ekaterina Pomerantseva Matthew McCarthy Adam Brown Chunsheng Wang James Culver Reza Ghodssi

The realization of next-generation portable electronics and integrated microsystems is directly linked with the development of robust batteries with high energy and power density. Three-dimensional micro- and nanostructured electrodes enhance energy and power through higher surface area and thinner active materials, respectively. Here, we present a novel approach for the fabrication of hierarch...

Journal: :The Journal of General Physiology 1936
Harold A. Abramson Laurence S. Moyer

From data on the surface area and electrical mobilities of mammalian red blood cells in M/15 phosphate buffer at pH 7.4, it has been possible, with the help of the Gouy and von Smoluchowski theories, to calculate the net surface charge per cell as well as the charge per unit area. It was found that a single mammalian red cell has a net surface charge ranging from four to fifteen million electro...

Journal: :New Zealand Journal of Agricultural Research 1976

Journal: :Journal of physiological anthropology 2008
Joo-Young Lee Jeong-Wha Choi Ho Kim

The purpose of this study was to determine the body surface area (BSA) based on the alginate method, to derive formulae for estimating BSA, and to compare the error of the present formula to previous formulas obtained from other countries. We directly measured the entire body surface area of 34 males (20-60 years old, 158.5-187.5 cm in height, 48.5-103.1 kg in body weight) and 31 females (20-63...

Journal: :Circulation 1980
W L Henry J M Gardin J H Ware

Echocardiographic data from 92 younger normal subjects (1 month to 23 years of age) and 136 older normal subjects (20-97 years of age) were pooled and analyzed to obtain prediction equations for normal echocardiographic values. Using a bivariate regression model with the assumption that variability is constant as a percentage of the expected value, we developed regression equation and graphs th...

Journal: :Archives of disease in childhood 1973
K O'Malley E N Coleman W B Doig I H Stevenson

O'Malley, K., Coleman, E. N., Doig, W. B., and Stevenson, I. H. (1973). Archives of Disease in Childhood, 48, 55. Plasma digoxin levels in infants. The average dosage rate of digoxin given in a group of infants, when related to body surface area, was twice as high (and when related to body weight, five times as high) as that employed for the maintenance therapy of adult controls. The resulting ...

2007
Demetrius A Miminas

Demetrius A Miminas is a Postgraduate MSc Student at Cardiff University and a Trust-grade Plastic Surgeon at Russells Hall Hospital, Dudley Group of Hospitals NHS Trust, Dudley, West Midlands Measurement of wound size and, more specifi cally, surface area is an important aspect of assessing any wound. With regards to burn wounds this measurement, expressed as percentage of the total body surfac...

1995
Michael Teschner Christian Henn

A method for the fast generation of solid molecular surfaces is described. Based on a three dimensional grid, a template driven procedure generates the so called “contact surface“, also known as Connolly surface. The main advantages of this method are its good perfarmance and that it directly generates continuously tessellated

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