While methane hydrates (MHs) can be present in various forms in deep seabeds or permafrost regions, this paper deals with MH-bearing sediments (MHBS) where the MH has formed bonds between sand grains. A bond model based on experimentally validated contact laws for cemented granules is ...
The important feature revealed is the pronounced reorganization of Pd's outer core maxima corresponding to N-shell electrons of metal. Electronic rearrangements identified in this model reaction are likely to be the case in the more complex reactions of the same type involving transition metal ...
Homolytic bond dissociation energy (BDE) for C&bond;H and C&bond;X (X = F, Cl, or Br) bonds in polyhalogen methanes was successfully correlated with a two-parameter model describing the repulsion energy of the bonding electron pair with other electrons and its attraction with nuc...
Theoretical and Experimental Studies on the Bond Dissociation Energies of Al(methane)+, Al(acetylene)+, Al(ethene)+, and Al(ethane)+ Schwarz, "Theoretical and experimental studies on the bond dissociation ener- gies of Al(methane)+, Al(acetylene)+, Al(ethene)+, and Al(ethane)+",... D...
lettering foil lettering model lettering proper plac letter of credit of g letter printing letter weight let their back hair d let the sawdust out o let the side down letting down leveeramp level level-flight stalling level discomfort fact level down leveled thrust level ellipsoid of re leveling...
Keywords:methane hydrate; bond thickness; inter-particle bonded model; methane hydrate-bearing soils 1 引 言 天然气水合物是解决当前国际能源危机的潜在 新型能源 [1] ,被誉为21 世纪具有商业开发前景的战 略资源,世界发达国家纷纷投入巨资开展了水合物 的研究工作。尤其是日本,2013 年3 月12 日成功 ...
One-bond, two-bond, and three-bond mechanisms in thermal deazetizations of 2,3-diazabicyclo[2.2.2]oct-2-enes, trans-azomethane, and 2,3-diazabicyclo[2.2.1]... The thermal deazetizations of a series of substituted 2,3-diazabicyclo[2.2.2]oct-2-enes and some simpler model systems...
Early concepts in covalent bonding arose from this kind of image of the molecule of methane. Covalent bonding is implied in the Lewis structure that indicates sharing of electrons between atoms. The term "covalence" in regard to bonding was first used in 1919 by Irving Langmuir in a Journal ...
The partial oxidation of methane to synthesis gas (syngas, CO + H2) was performed in a mixed-conducting perovskite dense membrane reactor at 850... Chung-Yi,Tsai,Anthony,... - 《Aiche Journal》 被引量: 548发表: 1997年 A controlled cortical impact model of traumatic brain injury in the ...
Here we only recall that the VE model gives a four-line spectrum, with two Lorentzian lines centred at ω = 0 describing the quasi-elastic response arising from the com- bined effects of thermal and viscous relaxations, while the frequency of the two other lines is related to the ...