نتایج جستجو برای: residue burning

تعداد نتایج: 67703  

2006
Ulf Rehmann

Given an arbitrary n, we consider anisotropic quadratic forms of dimension n over all fields of characteristic = 2 and prove that the height of an n-dimensional excellent form (depending on n only) is the (precise) lower bound of the heights of all forms of dimension n.

2012
Malavika Dadlani

Suggested citation IARI (2012) Crop residues management with conservation agriculture: Potential, constraints and policy needs. Indian Foreword India being an agriculture-dominant country produces more than 500 million tons of crop residues annually. These residues are used as animal feed, for thatching of homes, and as a source of domestic and industrial fuel. A large portion of unused crop re...

ژورنال: مواد پرانرژی 2017

By comparing the empirical and predicted performance diagrams of the composite solid propellants, it appears that there is a discrepancy between these two graphs .This deviation has been attributed to spatial burning rate variation which is related to burning rate fluctuation or hump effect. The most important reasons for this spatial burning rate variation are casting process. In order to appr...

2010
JOSEPH M. SUTTON

It might not appear at first that this paper has sig­ nificance in the field of Solid Waste Processing, since it applies to cleaning wash water from cleaning the fireside surfaces of utility boilers burning gas and oil. It is generally believed that systems which burn mu­ nicipal solid waste (MSW) do not require treatment of boiler wash water, since this can be used to quench the ash and thus b...

1999
P. B. Bush J. W. Taylor C. K. McMahon

Pine bark beetle insecticide treatment plots were established on the Ocala National Forest, in central Florida. Each plot consisted of five sand pine, pinus clausa (Chapm. Ex. Engelm) Vassey ex. Sarg., trees treated with either 0.5% lindane (benzene hexachloride) or 2% chlorpyrifos (O,O-diethyl O-(3,5,6-trichloro-2-pgridyl) phosphorothioate). After 4 months, mean residue levels ranged from 0.32...

2017
Naomi F. Miller Tristine L. Smart NAOMI F. MILLER

An important concern of paleoethnobotanists is accounting for the presence and charring of seeds recovered archeologically. The possibility that seeds can be brought to a site incorporated in animal dung and charred when that dung is burned as fuel is considered. Researchers have shown that animal dung can contain seeds. Ethnoarcheological data from the rural village of Malyan, Iran demonstrate...

2010
Yu Song Di Chang Bing Liu Weijie Miao Lei Zhu Yuanhang Zhang

Open fires play a significant role in atmospheric pollution and climatic change. This work aims to develop an emission inventory for nonagricultural open fires in Asia using the newly released MODIS (Moderate Resolution Imaging Spectroradiometer) burned area product (MCD45A1), as the MODIS sensor cannot efficiently detect field crop residue burning. Country-level or province-specific biomass de...

ژورنال: مواد پرانرژی 2014

Investigation shows that the some complex and expanded parameters are effective on the burning rate. In this paper we evaluate the effect of particles dispersion, size of AP particle, the size of Al particles, Fe2O3, viscosity, shape factor, the size of mixer and the mechanical parameters such as tensile and stress on the burning rate. These studies show that the decrease of AP particles, size ...

2013
Hossein Najafi

In this research, we established a modified 45 flammability test for cotton blend material to measure the flammability of nanosilicone softener treated-cotton blend material. The wet pick-up was about 150±10%. b) The specimens were tested in the cross direction and nine specimens were measured. The average percent weight loss of the untreated cotton blend nonwoven is only 0.9%. The percent weig...

2016
Kun Zhao Xiao-Dong Zhou Xue-Qiang Liu Lei Lu Zhi-Bo Wu Fei Peng Xiao-Yu Ju Li-Zhong Yang

The present study is aimed at predicting downward flame spread characteristics over poly(methyl methacrylate) (PMMA) with different sample dimensions in different pressure environments. Three-dimensional (3-D) downward flame spread experiments on free PMMA slabs were conducted at five locations with different altitudes, which provide different pressures. Pressure effects on the flame spread rat...

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