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Firstly, synthetic racemates of β- amino acids were resolved into their enantiomers by ehiral ligand - exchange flash chromatography with L - hydroxyproline chemically bonded to irregular silica as the stationary phase and aqueous solution containing cupric ions as the mo

首先合成L-羟脯氨酸硅胶键合手性固定相，用于快速色谱中3-羟基-4-甲氧基-β-苯丙氨酸对映体的制备分离，考察了流动相中Cu^2＋浓度、样品体积等因素对分离的影响。

The study area covers 4 mines producing sclerotia algal type coal in Hunyuan,Shanxi Province.the study combined both coal petrologic and geochemical methods indicated that the sclerotia algal coal is physically and chemically different from humic coal apparently,the forming environment is mainly controlled by pH,Eh and organic content,in which Pila Alginite and Reinschia Alginite are highly dominated.

运用煤岩学和地球化学方法，对中国山西浑源等 4个典型的菌藻类煤进行了综合研究，结果表明，菌藻类煤在物理、化学组成和特性上与腐植煤有明显的区别；其形成环境主要受 p H、Eh值和有机质含量的制约，其中皮拉藻和轮奇藻具有含量高、生存时间长的特征；并在此基础上对菌藻类煤作了成因分类

It is best to combine green tea with zinc oxide-based sunscreens because zinc oxide is chemically inert and should not react with green tea (which some chemical sunscreens might do, especially in sunlight).

最好是将绿茶和锌oxide-based防晒霜，因为氧化锌是化学反应迟钝，不应该用绿茶(某些化学防晒产品可能做，尤其是在阳光)。

In general appearance, humus is a dark, often yellow-brown, amorphous or colloidal substance that difficult of characterize chemically.

从普遍外表看来，腐殖质是一黑暗，常常黄色-棕色，无固定形状的或者胶体的物质那样困难的刻划性格用化学。

Refineries. Other fuel-related research is evaluating greater use of ethanol in gasoline, removal of unwanted byproducts from fuel, identification of more effective refinery catalysts, potential molecular-level enhancements to fuel blends, and thermo-chemically converting cellulosic biomass – wood, corn stover and switch grass – into bio-oil.

其他相关燃料的研究正在评估在汽油中更多地使用乙醇，从燃料里移出不必要的副产品，确认更有效的炼油催化剂，对混合燃料增强潜在的分子水平以及用热化学法将纤维素生物质-木材，玉米秸秆和开关草-转化成生物油。

The infra red spectra of specimens show that there are evident changes of waves at the wavelength of 1743, 1660 and 1605cm-1 which are attributed to the change of C=O in wood. So it is clear that at least hemicellulose, even lignin in wood cell chemically changes during heat treatment of compressed wood of China fir.

红外吸收光谱表明，在热处理过程中波数在1743，1660和1605cm-1附近的羰基峰的变化趋势最为明显，说明在热处理固定杉木压缩木材的过程中，至少半纤维素，甚至木素发生了化学变化

Chemical methods are used to make the aluminosilicates existing in bauxites re-act chemically in the high temperature with hydroxyl groups lost, which makes aluminosilicate crystals collapse due to desiccation, finally the amorphous Si02 may be.

化学方法主要是使铝土矿中的铝硅酸盐矿物在高温条件下发生脱舟基反应。

Chemically speaking, 3HAO is an important enzyme that catalyzes the aromatic ring opening reaction.

在化学的意义上，3HAO扮演著把芳香环氧化开环的酵素。

In this study, alkanethiolate molecules with -CH3 terminated tail group chemically adsorb upon Au substrate and form Au-S bonds, which potentially act as ultra-thin resist films with excellent uniformity in molecular order and high resistivity to chemicals.

且因CH3 官能基表面具化学惰性，针对特定化学蚀刻液拥有抵抗化学腐蚀之能力，以此特性将可应用於制作微奈米等级图案的超薄蚀刻阻剂。

Based on a brief introduction of the important Radical Pair Mechanism of Chemically Induced Dynamic Electron Polarization, a series of CIDEP spectra originated from RPM, partially or entirely, were recorded and analyzed in this dissertation.

论文在对CIDEP中的一个重要机理——RPM机理的模型阐述的基础上，对多种具有RPM机理的体系进行了实验测量，并对实验谱图进行了分析，最后从理论上对RPM的极化强度进行了计算。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。