A. Intermolecular hydrogen bonds increase the melting and boiling points of molecules B. Hydrogen bonds between different molecules increase mutual solubility C. Reduce the density of water D. The above three items 相关知识点: 试题来源: 解析 D 反馈...
商业银行建立关键风险指标开展操作风险监测工作，关键风险指标是代表某一业务领域操作风险变化情况的统计指标，是识别操作风险的重要工具。其中，“监测工作要能够反映操作风险全局状况及变化趋势，揭示诱发操作风险的系统性原因，实现对全行操作风险状况的预警”属于关键风险指标监测原则的( )原则。
In this sense, in the present article, the role of the presence of hydrogen bonds on the mechanical properties of a set of mortars (weak, intermediate, and strong) is advanced. The mechanical performances were the compressive, flexural, and adhesion strengths. The results revealed linear ...
Hence, the increase in Tgel of NaCas-MD dispersions observed in the current study might as well be due to the enhancement in protein–protein interaction via hydrogen bonds among NaCas particles after conjugation. Moreover, maltodextrin with DE smaller than 10 are gelling dextrins with long, ...
The structure and strength of the hyphae are given by chitin in the cell walls24,25. Chitin is a hard, inelastic linear polymer26 bonded by hydrogen bonds, which gives it rigidity along its chain27. This bonding allows chitin to possess superior tensile strength, even higher than that of ...
Clay minerals such as kaolinite, smectite, chlorite, micas are main components of raw materials of clay and formed in presence of water. A large number of clays used to form the different structure which completely depends on their mining source. They ar
The rheological properties of water-based drilling fluid were measured before and after thermal aging experiments at 100 °C for 16 h. The clay samples used for measuring rheological properties were investigated, in other words the colloidal properties of the Na-MMT/PAADDC system could be di...
The paper reviews the properties of cement composites reinforced with short fibres. The effect of natural fibres was investigated: cotton, sisal, jute, ramie, bamboo, and synthetic fibres: polymer and polypropylene. It was noticed that the fibres change
Specific calculation information includes bond lengths, bond energies and hydrogen bonds among single, double and triple molecules. The infrared spectra were measured using an FTIR spectrometer (USA/Nexus 670) from Nikoli Corporation (equipped with two BaF2 mica flakes), and the scan was in the ...
Using a CHNS analyzer, model Elementar Vario EL III Instruments based on the principle of Dumas's method58, which involves the complete and quick oxidation of the sample by "flash combustion," one may determine the percentages of C, H, N, S, (carbon, hydrogen, nitrogen, sulphur and oxygen...