Materials Literature
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作为有增加的煤烟排放上的更严格的规定，射出的煤烟粒子尺寸上的强调被强加了，部分， premixed 燃烧被证明了同时与高热的效率完成极端低的 NOx 和煤烟排出物的柴油机引擎，由混合和化学参数的协同作用控制。它在煤烟形成上为进一步的学习召集燃烧边界的效果。在这研究，煤烟形成特征被结合的 CFD 代码调查减少的 n-heptane 模型和改进 multistep 煤烟当模特儿。乙炔的历史，它作为主要种类被拿哼形成和煤烟表面生长，在煤烟预言上起更重要的作用。活跃地点 CH 的部分的修订参数在柴油机煤烟形成作为煤烟表面活动的指示物被介绍。在煤烟表面活动和煤烟表面生长的燃烧边界的效果在这研究被探索。当混合是相当同类的时，降低的燃烧温度由于…
【Objective】The drying and shrinkage characteristics of cut tobacco during drum drying with combined heat transfer were investigated to provide references for drying process optimization. 【Method】 A kind of B2 F cut tobacco was dried under the different drum temperatures, and the moisture content, temperature and shrin…
Films of poly (methyl methacrylate) (PMMA) were prepared by the addition of photoinitiator to the polymer. The influence of five organic photoinitiators on thermal stability of poly(methyl methacrylate) was studied by thermogravimetric analysis. Next, the PMMA films doped with these photoinitiators were UV irradiated…
Nowadays,selective catalytic reduction (SCR)method is widely applied for denitrification in the glass in-dustry.And the selection of catalyst is the key of SCR technology.In this paper,the selection and installation of catalyst were compared.The results show that the initial installation of a layer of honeycomb form o…
The effect of rare earth(RE) on bainite transformation mechanism is not yet unified in the academia.Therefore, further studying the effect of RE on bainite transformation mechanism will have important guiding significance for the development of bainite steels. In this paper, using differential dilatometer(DIL805A/D),…
在恐水病的有机化合物的新陈代谢的动力学上达到表面活化剂的效果的更好的理解，由 Citrobacter sp 的菲的 biodegradation。SA01 在包含 Tween 80，钠 dodecyl 苯 sulfonate 和液体矿物质盐媒介的一个批实验被调查。Monod 模型被修改有效地描述分区，菲 biodegradation 和 biopolymer 生产。结果显示出那 Tween 80 和钠 dodecyl 苯 sulfonate (在 50   的各个； mg/L )提高的菲新陈代谢并且 poly --由中介的增加的数量显示了的 hydroxybutyrate 生产(在17.2%～47.9%)，并且百分比 po…
In this study, we developed a novel technique for preparing polyvinyl alcohol (PVA) hydrogel as an immobi- lizing matrix by the addition of sodium bicarbonate. This resulted in an increase in the specific surface area of PVA_ sodium bicarbonate (PVA_SB) hydrogel beads to 65.23 m 2 g -1 hydrogel beads, which was approx…
以Al-Cu亚共晶合金为研究对象,考察了α-Al单晶磁各向异性对稳恒强磁场下定向凝固枝晶组织生长行为的影响.实验测定了α-Al单晶不同晶向的磁化率.结果表明：Al-Cu单晶中的磁化现象表现出明显的方向性;难磁化轴为晶体学位向〈111〉方向,即磁化率最小;易磁化轴为晶体学位向〈311〉或〈310〉方向,即磁化率最大;磁化率随Cu原子数量的增加而降低;[111]晶向族中4个晶向的磁化率不再一致.对于Al-0.85%Cu合金,当生长速度为50μm/s时,在无磁场情况下其定向凝固枝晶主干沿凝固方向排列;当施加6 T纵向强磁场时,枝晶主干偏离凝固方向成一定夹角排列,这一现象可能是由α-Al磁晶的各向异性所致.
Cd( Ⅱ) ion could form a stable complex with 8-hydroxyquinoline( molar rate = 1∶ 1) in ethanol solution as revealed by ultraviolet spectrum analysis. Based on this molar rate of Cd( Ⅱ) ions and 8-hydroxyquinoline,Cd( Ⅱ) ions imprinting polymer microspheres were synthesized by water-in-oil-in-water( W /O /W) emulsions p…
Evidence is provided that a class of materials with dielectric constants greater than 10, herein called super dielectric materials (SDM), can be generated readily from common, inexpensive materials. Specifically it is demonstrated that high surface area alumina powders, loaded to the incipient wetness point with a sol…
o C in nanostructured p-type Nb0:6Ti0:4FeSb0:95Sn0:05composition. Even though the power factor of the Nb0:6Ti0:4FeSb0:95Sn0:05 composition is improved by 25% in comparison to the previously reported p-type Hf0:44Zr0:44Ti0:12CoSb0:8Sn0:2, the ZT value is not increased due to a higher thermal conductivity. However, the…
与生产技术和 nanomaterials 的 micro/nano 的快速的开发，在 micro-nano 规模的机械性质和行为的精确测量代表机械实验的一个新领域。拉曼光谱学，基于格子动力学理论，对在测量的点以内的格子结构变丑的统计信息的察觉适用。由于它的怪癖，例如 non-destructiveness，便利并且高分辨率，这种技术允许在在处理和罐头引起的微观结构的剩余应力的 situ 测量联机也在装载的力量下面完成 graphene，碳 nanotubes 和另外的 nanomaterials 的即时变丑。在最近的年里，机械大小很快基于拉曼光谱学技术发展了。在这评论，为几通常使用的材料的基于 Raman 的压力测量理论简短被描述…
采用沉积沉淀法制备了Y-Mg-Al-F催化剂，应用XRD、NH3-TPD和Raman光谱等技术手段对催化剂进行表征，并与A1F，催化剂作比较，且将催化剂应用于四氟乙烷（HFC-134a）裂解制备三氟乙烯反应中。结果表明，1100℃焙烧的Y-Mg-Al-F催化剂具有较高的活性和反应稳定性。反应温度400℃时，四氟乙烷转化率大于25％。催化剂表面酸性和积碳是影响催化剂活性和稳定性的主要因素。
有为自我装配的单层的制造的包含硫的取代者的不均匀地代替的酞毒被综合。酞毒 7，生一个二硫化物组，与一个氢氧根组一起从酞毒被综合，它经由相应代替的 phthalonitriles 的混合冷凝作用被准备。酞毒 10，忍受乙酰保护了 thiol 组，通过 iodophthalocyanine 的催化 Pd 的联合反应被综合。他们金底层上的自我装配的行为被 UVvis 光谱学进一步学习。
利用三[4-（1，2，4-三氮唑基）苯基]胺（T3）和羧酸辅助配体与Zn（Ⅱ）盐在溶剂热及分层条件下反应，合成了2个配位聚合物：[Zn3（T3）（BDC）3（H2O）3]·4H2O（1，H2BDC，对苯二甲酸）和[Zn3（T3）2（H2O）6]·（BDC）3·12H2O（2）. 配合物1在160℃下通过溶剂热反应得到，具有八重贯穿srs型拓扑的三维结构；配合物2在室温下通过分层法得到，具有kgd型拓扑的二维网络结构. 研究了配合物的热稳定性和配合物1的吸附性能. 结果表明，配合物1可以选择性地吸附水蒸气和甲醇，而对乙醇没有吸附.
Semi-on DC stress experiments were conducted on AlGaN/GaN high electron mobility transistors(HEMTs) to find the degradation mechanisms during stress. A positive shift in threshold voltage(VT/ and an increase in drain series resistance(RD/ were observed after semi-on DC stress on the tested HEMTs. It was found that the…
MgAl 氢存储合金被燃烧合成(CS ) 成功地准备方法。合金阶段的形成用 X 光检查衍射(XRD ) 在 CS 过程期间被学习，扫描电子显微镜(SEM ) ，和微分扫描热量测定(DSC ) 。当时间从 0 增加时， 0.5，在 733 K 的 1.0 ～ 2.0 h，产品是 Mg 和艾尔；Mg2Al3， Mg 和艾尔；Mg17Al12， Mg2Al3；并且 Mg；并且最后仅仅 Mg17Al12 分别地。在 DSC 踪迹与三座山峰结合了，也就是， Mg17Al12 的形成在 CS 期间包括三个过程，这被结束 Mg2Al3 的形成第一；然后不饱和的稳固的答案， Mg17Al12；并且最后完全的 Mg17Al12 合金。在在这个工作的…
A slow bromination process of butyl rubber(IIR) suffers from low efficiency and low selectivity(S) of target-product. To obtain suitable approach to intensify the process, effects of assistant solvents and mixing inten-sity on the bromination process were systemically studied in this paper. The reaction process was fo…
Surface eigenstress and eigendisplacement models were used to investigate the surface stress, surface relaxation and surface elasticity of thin films with different surface orientations. Molecular dynamics simulations and first-principles calculations were conducted on face-centered cubic Au films with the focus on re…
Fe-based and Fe/Mo composite amorphous coatings were deposited on the surface of plain carbon steel substrates by atmospheric plasma spraying(APS).With increasing the Mo alloy content,the microstructure of the coatings revealed more dense structure.The porosities of composite coating were all less than those of Fe-bas…