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64篇 您的检索式:作者名="Deme A"
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1Self-reaction of initial active groups in coal显示文摘For further understanding of self-heating of coal,we tested the reactions of seven different ranks of coal under inert atmosphere.In the test,50-gram of coal sample ranged from 0.18 mm to 0.38 mm was put into a special designed copper reaction vessel and let pure nitrogen to flow into the coal sample from the bottom at a rate of 100 mL/min.The programmed temperature enclosure was run at a programmed rate of 0.8 °C/min.The concentration of the carbon oxides and the coal temperature were tested.The results show that the coal reactions under inert atmosphere can generate CO and CO2.The reactions under inert atmosphere are affected by coal ranks,initial pore structure of coal and sulfur content.For low ranks of coal,the productions of carbon oxides are piecewise.The coal temperature is lower than the surrounding temperature throughout the reactions under inert atmosphere,but it rises quickly and reaches a crossing point temperature in the later stage under dry-air atmosphere.Based on the analysis,it indicates the self-reaction of initial active groups exists in the self-heating of coal besides the reactions in the two parallel reactions model.Spontaneous combustion of coal is due to both the oxidation heat accumulation and the chain reaction.A new reaction model of self-heating of coal was proposed.Qi Xuyao Wang Deming James A Milke Zhong Xiaoxing 2012International Journal of Mining Science and Technology2012,22,2:6
2Effects of vegetation cover on recruitment of Ulmus pumila L. in Horqin Sandy Land, northeastern China显示文摘Understanding the effects of vegetation cover on seedling survival is helpful for promoting vegetation restoration in environmentally fragile zones. This study was conducted in the desertified, moving sand dunes of Horqin Sandy Land, Inner Mongolia, northeastern China. We hyphothesized that(1) seed density(i.e., number/m2) increases as vegetation cover increases, and(2) there will be more surviving seedlings in locations with higher vegetation covers. Total vegetation cover and initial densities of seeds, germinated seeds and surviving seedlings of Ulmus pumilia were evaluated under various vegetation covers in trying to clarify the effects of vegetation cover on the early stages of the plant life history. In agreement with the first hypothesis, initial seed densities were greater(P<0.05) under higher vegetation covers. The relationship between vegetation cover and initial seed density was represented by a quadratic regression, where a threshold occurred with a vegetation cover of 36%(P<0.05). The higher total vegetation covers, however, did not result in increased densities of germinated seeds(P>0.05), which on average represented 16.7% of initial seed densities. Even more, three months after the study initiation, total vegetation covers were similar(P>0.05) at all positions in the dunes, and they determined a similar number(P>0.05) of surviving seedlings at those positions(i.e. the second hypothesis had to be rejected). The mean number of seed- lings that survived at all positions was only 4.5% of germinated seeds. The number of surviving elm seedlings(0 to 1.7 seedlings/m2) under various vegetations covers(12.2% to 20.8%) at all dune positions by late summer would most likely not contribute to vegetation restoration in the study area.DeMing JIANG Yi TANG Carlos A BUSSO 2014Journal of Arid Land2014,6,3:5
3Deep-sea smokers: windows to a subsurface biosphere? 显示文摘Deming J W Baross J A 1993Geochimica et Cosmochimica Acta1993,57,:1
4Deep-sea smokers:Windows to a subsurface biosphere显示文摘Deming J W Baross J A 0,,14:1
5An improved dis- persive solid-phase extraction clean-up method for the gas chromatog- raphy-negative chemical ionisation tandem mass spectrometric deter- mination of multiclass pesticide residues in edible oils显示文摘Pragney Deme Tirupathi Azmeera Devi B L A 2014Food Chem- istry2014,142,1:1
6The applicable density of sand-fix- ing shrub plantation in ltorqin Sand Land of Northeastern China 显示文摘Musa A Deming J Cunyang N 2014Ecological Engineering2014,64,:1
7Retention mechamism for reversed-phase ion-pair liquid chromatography显示文摘Bidlingmeyer B A Deming S N Price Jr W P 1979Chromatography A1979,186,:1
8The early diagenesis of organic matter: bacterial activity显示文摘Deming J W Barros J A 1993Organic geochemistry: princi ples and applications1993,,:1
9Overexpression of dicer as a result of reduced let-7 MicroRNA levels contributes to increased cell proliferation of oral cancer cells 显示文摘Jakymiw A Patel RS Deming N 2010Genes Chromosomes Cancer2010,49,6:1
10Neuroendocrine tumors of the lung显示文摘FISSELER-ECKHOFF A DEMES M 2012Cancers (Basel)2012,4,3:1
11Distinct effects of N-acetylcysteine and nitric oxide on angiotensin Ⅱinduced epidermal growth factor receptor phosphorylation and intracellular Ca2+ levels 显示文摘 Xin Yu Richard A Cohen 2000J Biol Chem2000,275,12:1
12Mammaglobin as a novel breast cancer biomarker: muhigene reverse transcrip- tion-PCR assay and sandwich ELISA显示文摘Zehentner B K Persing D H Deme A 2004Clin Chem2004,50,11:1
13Mammaglobin as a novel breast cancer biomarker: multigene reverse transcription-PCR assay and sandwich ELISA显示文摘Zehentner BK Deme A Toure P 2004Clin Chem2004,11,50:1
14Mammaglobin as a novel breast cancer biomarker= multigene reverse transcription-PCR assay and sandwich ELISA显示文摘Zehentner BK Persing DH Deme A 2004Clin Chem2004,50,11:1
15roTOR inhibition e- licits a dramatic response in PI3K-dependent colon cancers显示文摘Deming D A Leystra A A Farhoud M 2013PLoS One2013,8,60:1
16Treatment of ascites with reinfusion of ascitic fluid concentrate 显示文摘Narwan H Demes M Kovac A at el 2000Bratisl Lek Listy2000,101,5:1
17Overex-pression of dicer as a result of reduced let-7 Mi-croRNA levels contributes to increased cell prolifer-ation of oral cancer cells 显示文摘Jakymiw A Patel RS Deming N 2010Genes ChromosomesCancer2010,49,6:1
18Overexpression of dic-er as a result of reduced let-7MicroRNA levels contributes to increased cell proliferation of oral cancer cells显示文摘Jakymiw A Patel RS Deming N 2010Genes Chromosomes Cancer2010,49,6:1
19The new bronchopul- monary dysplasia:challenges and commentary 显示文摘Merritt T A Deming D D Boynton B R 2009Semin Fetal Neonatal Med2009,14,6:1
20The psychrophilic lifestyle as revealed by the genome sequence of Colwellia psychrerythraea 34H through genomic and proteomic analyses显示文摘METHE A NELSON K DEMING J 2005Proceedings of the National Academy of Sciences2005,102,10:1
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