However, when VE increases to 0.2, the main peak of water is very weak and a new peak appears at 3500 cm, indicating the destroy of hydrogen bonds network structure, which is attributed to the self-association in ethanol aggregates.
In apigenin, excluding the aromatic hydrogen atoms in the phenyl substituent, all other hydrogen atoms and the oxygen atoms form hydrogen-bonds with H2O and CH3CH2OH. (3) In apigenin–H2O/CH3CH2OH complexes, the electron density and the E(2) in the related localized anti-bonding orbital are ...
All bonds are single bonds.参考译文:乙醇分子的结构。所有键都是单键。 During ethanol fermentation, glucose and other sugars in the corn (or sugarcane or other crops) are converted into ethanol and carbon dioxide. 【参考译文】在乙醇发酵过程中,玉米(或甘蔗或其他作物)中的葡萄糖和其他糖转化为乙醇...
mobility freedom under the applied electric field71,73,74. This factor and the lower polarity of ethanol, lead to weaker proton hopping compared to water vapor and result in a lower electrical conductivity improvement71,73. In addition, the performance of the exhaled breath sensor was investigated...
The hemicellulose molecules are linked to the micro-fibrils by hydrogen bonds. Lignins are phenolic compounds which are formed by polymerization of three types of monomers (p-coumaryl, coniferyl and synapyl alcohols). Lignin adds to the cell wall a compressive strength and stiffness. Cellulose is ...
Picric acid is a coagulant fixative which changes the charges on the ionisable side chains of proteins and disrupts electrostatic and hydrogen bonds. It forms salts (picrates) with basic groups of proteins causing coagulation. It appears not to fix lipids or most carbohydrates bu...
The coupling of one‐carbon (C1) fragments to form carbon–carbon bonds has been studied on a Cu(110) surface. In these studies, methyl (CH3) and methylene... Chiang,C.-M. - 《Journal of Vacuum Science & Technology A Vacuum Surfaces & Films》 被引量: 62发表: 1992年 In Situ and ...
At the basis-set limit, second- and third-order electron correlation effects play a significant role for rotations around the CC-OH, HC-CO, and CC-CO bonds. Specifically, second- and third-order correlation effects strongly stabilize structures in which the hydroxylic hydrogen eclipses with the...
Breslow, R. & Khanna, P. L. An intramolecular model for the enzymatic insertion of coenzyme B12 into unactivated carbon-hydrogen bonds.J. Am. Chem. Soc.98, 1297–1299 (1976). Wasowicz, T. J. & Pranszke, B. Observation of the hydrogen migration in the cation-induced fragmentation of ...
5A). Tyr344 is buried inside the protein molecule and interacts with several residues, including Asn213, Pro214, and Val347 or Phe240, through hydrogen bonds or π-π stacking, respectively (Fig. 5B). These intramolecular interactions of Tyr157 or Ty344 imply that the PTN modifications at ...