نتایج جستجو برای: ash residue

تعداد نتایج: 72469  

Journal: :Journal of economic entomology 2015
Don Cipollini

Emerald ash borer is an invasive Asian pest of ash species in North America. All North American species of ash tested so far are susceptible to it, but there are no published reports of this insect developing fully in non-ash hosts in the field in North America. I report here evidence that emerald ash borer can attack and complete development in white fringetree, Chionanthus virginicus L., a sp...

2003
J. W. Wang

Coal ash is the main waste from power plant. It is estimated that the consumption of the coal for power plant will increase to 240 million tons each year and the coal ash wastes will produce more than 2 million tons per year. Although the utilization of coal fly ash can be reached 74.1%, large amount of coal fly ash and bottom ash still cannot be utilized. The purpose of this research is to dev...

2015
Huiming Fan Shuo Wang Jianan Liu Jun Long

In order to improve the whiteness of fly ash, the particles were coated by in-situ precipitation of calcium carbonate. After different mass ratios of calcium oxide to fly ash were mixed into water, a certain amount of carbon dioxide was bubbled into the mixture to form a precipitated calcium carbonate deposit on the surface of fly ash. With the help of scanning electron microscopy (SEM), the pr...

2010
J. ADAMSON N. IRHA K. ADAMSON E. STEINNES U. KIRSO

Oil shale ash contains mineral ingredients of agricultural importance and could be used for treatment of soils. However, the ash contains several hazardous ingredients, i.e. toxic trace metals which could be mobile and create environmental concerns. Beneficial use of the oil shale ash in agriculture and forestry requires better knowledge of leaching characteristics of soil-ash systems. In this ...

2017
Clara G. Sears Kristina M. Zierold

Coal ash, generated from coal combustion, is composed of small particles containing metals and other elements, such as metalloids. Coal ash is stored in open-air impoundments, frequently near communities. The objective of this study was to evaluate the prevalence of health and sleep problems in children living near coal ash and compare these prevalences to children not living near coal ash. In ...

2007
Mariann T. Garrison-Johnston Peter G. Mika Dan L. Miller Phil Cannon Leonard R. Johnson

Data from 139 research sites throughout the Inland Northwest were analyzed for effects of ash cap on site productivity, nutrient availability and fertilization response. Stand productivity and nitrogen (N) fertilizer response were greater on sites with ash cap than on sites without. Where ash was present, depth of ash had no effect on site productivity or N fertilizer response. Site productivit...

Journal: :Journal of environmental quality 2009
Isa A M Yunusa Margaret D Burchett V Manoharan D Lionel Desilva Derek Eamus C Greg Skilbeck

There is uncertainty as to the rates of coal fly ash needed for optimum physiological processes and growth. In the current study we tested the hypothesis that photosynthetic pigments concentrations and CO(2) assimilation (A) are more sensitive than dry weights in plants grown on media amended with coal fly ash. We applied the Terrestrial Plant Growth Test (Guideline 208) protocols of the Organi...

2017
Liang Wang Hao Wu Peter Arendt Jensen Kim Dam-Johansen Johan E. Hustad

In the present work, the ash transformation and deposition behavior during wheat straw and wood waste combustion were investigated by combustion experiments in an entrained flow reactor. The influence of sewage sludge addition on ash chemistry and deposition tendency was also studied. During combustion wheat straw, fine fly ash particles smaller than 2.5 μm are mainly formed due to vaporization...

Journal: :Biofuels, Bioproducts and Biorefining 2021

Lignocellulose is the most abundant source of saccharides and it therefore a promising feedstock for glycols, such as ethylene-glycol, via catalytic hydrogenolysis polysaccharides that contains. However, this step hampered by presence lignin other biomass contaminants, ash, which need to be removed in pretreatment step. We propose an organosolv-like pre-treatment can delignify de-ash lignocellu...

Journal: :The American journal of medicine 1978
G S Mintz M N Kotler B L Segal W R Parry

Asymmetric septal hypertrophy (ASH) is considered the unifying link in the spectrum of hypertrophic cardiomyopathies. ASH and mitral valve systolic anterior motion (SAM) are the two most important echocardiographic criteria for the diagnosis of idiopathic hypertrophic subaortic stenosis (IHSS). Ten patients found have SAM without ASH were studied. Septal thickness, thickening, and excursion wer...

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