preparation是可数吗
“antbq”通过精心收集，向本站投稿了9篇preparation是可数吗，以下是小编精心整理后的preparation是可数吗，供大家阅读参考。
篇1：preparation是可数吗
例句
surface preparation 表面处理;表面整理;表面预处理;表面预加工
preparation for 建议;准备;为了…做准备使用其的.时候;偏幸
Data Preparation [计] 数据准备;数据预处理; [计] 数据整理
coal preparation [矿业] 选煤;煤炭洗选;翻译;国际选煤杂志
coal preparation plant [矿业] 选煤厂;煤准备厂;煤浆制备厂;配煤厂
The key to success is preparation.
成功的关键是准备。
篇2：preparation可数吗?
例句：
She stressed the importance of careful preparation.
她强调了认真准备的重要性。
He was fastidious in his preparation for the big day.
他认真仔细地准备着这个盛大的'日子。
The importance of preparation cannot be overemphasized.
准备的重要性要一讲再讲。
篇3：preparation可数吗固定搭配
prepare用作及物动词时：prepare sth。表示准备，后接名词或代词作宾语；prepare用作不及物动词时：prepare for sth。表示为什么什么做准备。
用法如下：
1、prepare sb. for / to do sth.使某人对……作好准备
2、prepare sb. sth.为某人准备……
3、prepare sth. for + n. / v.-ing.（动名词）准备……，为……做准备
4、sb. prepare for sth. / to do sth.某人准备做……
5、be prepared for…为……准备，对……作好了准备，表示结果
6、be prepared to do sth.准备好……，愿意
7、be prepared against防备
例句：
1、Who prepared these building plans?
这些建筑设计图是谁制作的?
2、The defence lawyers asked for another week to prepare their case。
辩护律师要求再给他们一周准备案件。
篇4：Preparation and Characterization of
Preparation and Characterization of Temperature-responsive Porous Monoliths
A new temperature-responsive porous monolith has been prepared by surface-initiated activators generated by electron transfer atom transfer radical polymerization (AGET ATRP) grafting poly(N-isopropylacrylamide) (PNIPAAm) within the pores of the porous polymer monolith. The grafting copolymerization was carried out by a method based on a continuous flow-through technique without special deoxygenation procedure needed in the general ATRP. The addition of ascorbic acid could counteract the oxidation effect of oxygen diffusing into the reaction system. The resulting grafted monolith was characterized by a mercury intrusion method and the size of macropore was 3.65 μm, which was suitable for flow through the monolith for HPLC. The thermally responsive property of the grafted monolith was evaluated by HPLC using steroids with various hydrophobicities as probes. Through determination of retention factor of each steroid on the grafted monolith at different temperatures using water as mobile phase, it was found that the slope of the plot of retention factor of each steroid versus the temperature changed around the low critical solution temperature (LCST, 32 ℃) of PNIPAAm in water. It was relative to the grafted PNIPAAm temperature sensitivity that a hydrophobic and hydrophilic alternation would take place around its LCST.Based on this thermally responsive property, the grafted monolith was used as stationary phase for HPLC and to separate the steroids using water as mobile phase by changing the column temperature. As a mobile phase, water is much better than organic solvents concerning the environment.
作 者：ZHANG, Rongyue QI, Li XIN, Peiyong YANG, Gengliang CHEN, Yi 作者单位：ZHANG, Rongyue,XIN, Peiyong(Beijing National Laboratory of Molecular Science, Laboratory of Analytical Chemistry for Life Science,Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;Graduate School, Chinese Academy of Sciences, Beijing 100049, China)QI, Li,CHEN, Yi(Beijing National Laboratory of Molecular Science, Laboratory of Analytical Chemistry for Life Science,Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China)
YANG, Gengliang(College of Pharmacy, Hebei University, Baoding, Hebei 071002, China)
刊 名：中国化学（英文版） SCI英文刊名：CHINESE JOURNAL OF CHEMISTRY 年，卷(期)： 27(11) 分类号：O6 关键词：temperature-responsive monolith poly(N-isopropylacrylamide) atom transfer radical polymerization,HPLC steroid篇5：Preparation and characterization of
Preparation and characterization of aligned carbon nanotubes coated with titania nanoparticles
Well-aligned carbon nanotubes coated with titania (TiO2) were prepared by atmospheric pressure chemical vapor deposition (APCVD), and the sequential experiments including carbon nanotubes preparation, air-oxidation purification and titania nanoparticles coating were performed at different temperatures in the same reactor. Scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction patterns (XRD), and energy- dispersive X-ray spectra (EDX) demonstrated the well-aligned nanotubes and TiO2 nanoparticles in close proximity and the average diameter of TiO2 nanoparticles was 11.5 nm.
作 者：YU Hongtao ZHAO Huimin QUAN Xie CHEN Shuo 作者单位：Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China 刊 名：科学通报（英文版） SCI英文刊名：CHINESE SCIENCE BULLETIN 年，卷(期)： 51(18) 分类号：O6 关键词：chemical vapor deposition well-aligned carbon nanotubes coatings TiO2篇6：Preparation and Characterization of
Preparation and Characterization of Microencapsulated Hexadecane Used for Thermal Energy Storage
Polyurea microcapsules about 2.5 μm in diameter containing phase change material for thermal energy storage application were synthesized and characterized by interfacial polycondensation method with toluene-2,4-diisocyanate and ethylenediamine as monomers in an emulsion system. Hexadecane was used as a phase change material and OP, which is nonionic surfactant, and used as an emulsifier. The chemical structure and thermal behavior of the microcapsules were investigated by FTIR and thermal analysis respectively. The results show encapsulated hexadecane has a good potential as a solar energy storage material.
作 者：Guang Long ZOU Zhi Cheng TAN Xiao Zheng LAN Li Xian SUN Tao ZHANG 作者单位：Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 刊 名：中国化学快报(英文版) ISTIC SCI英文刊名：CHINESE CHEMICAL LETTERS 年，卷(期)： 15(6) 分类号： 关键词：Phase change material microcapsule interfacial polycondensation energy storage篇7：Preparation and Characterization of
Preparation and Characterization of Refuse Derived Fuel for Pyrolysis and Gasification by Bindless High Pressure Briquet
Abstract：A new type of refuse derived fuel (RDF) for pyrolysis and gasification was prepared from municipal solid waste (MSW) in the presence of a small quantity of coal by bindless high pressure technology at room temperature. The physicochemical property of RDF was tested. Orthogonal experiment method was used to optimize the process parameters using dropping strength (mechanical strength) and thermal stability of the RDF as indices for quality of RDF. The result shows that the mixture of MSW and coal with a total moisture ranging from 5% to 17% can be easily compressed into RDF briquettes at a pressure above 70 MPa. When the briquetting pressure is higher than 100 kN and moisture content is about 10%, the qualified RDF can be obtained. The orthogonal experiment shows that the moisture can greatly affect the mechanical strength of RDF, while all the technique parameters have no obvious influence on thermal stability of RDF. The optimal parameters are a shaping pressure of 106 MPa, a moisture content of 10%, and a coal content of 20%.作 者：张宪生 解强 厉伟 沈吉敏 作者单位：张宪生,厉伟,沈吉敏(School of Chemical Engineering and Technology, CUMT, Xuzhou,Jiangsu 221008, China)解强(School of Chemical Engineering and Technology, CUMT, Xuzhou,Jiangsu 221008, China;School of Chemical and Environmental Engineering, CUMT,Beijing 100083 China)
期 刊：中国矿业大学学报(英文版) ISTICEI Journal：JOURNAL OF CHINA UNIVERSITY OF MINING AND TECHNOLOGY 年，卷(期)：2004, 14(1) 分类号：X705 Keywords：municipal solid waste refuse derived fuel preparation orthogonal experiment篇8：Preparation and characterization of
Preparation and characterization of 3-dimensionally ordered macroporous SiC
Three-dimensionally (3D) long range ordered macroporous SiC ceramics were prepared through infiltrating polymethylsilane (PMS) into the 3D ordered sacrificial silica template, pyrolysis and the template removal. It was found that the pore size (84-658 nm), BET surface area (299.44-584.64 m2/g) and micropore volume (0.25-0.64 cm3/g) of the achieved porous SiC can be tailored by utilizing different sizes silica sphere templates. There exist three kinds of pores in the porous ceramics: sphere inversed pores, windows and mesopores (2-5 nm). The sphere inversed pores were packed as hcp structure and three dimensionally penetrated through the windows, and the mesopores endowed the porous ceramics surprising high BET surface areas and micropore volumes.
作 者：WANG Hao LI Xiaodong YU Fu-cheng KIM Dong-pyo 作者单位：WANG Hao,LI Xiaodong(CFC Key Lab of National University of Defense Technology, Changsha 410073, China)YU Fu-cheng,KIM Dong-pyo(Department of Fine Chemical Engineering and Chemistry of Chungnam National University, Taejon 305-764, South Korea)
刊 名：中国科学E辑（英文版） SCI英文刊名：SCIENCE IN CHINA SERIES E:TECHNOLOGICAL SCIENCES 年，卷(期)： 49(1) 分类号：O6 关键词：three-dimensionally ordered materials templated technique preceramic polymer conversion technique SiC ceramic篇9：Preparation and Characterization of
Preparation and Characterization of Nanotitanium Dioxide Coating Film Doped with Fe3+ Ions on Porous Ceramic
The nanotitanium dioxide (TiO2) photocatalytic and porous ceramic filtering technique is one of the advanced methods to effectively treat organic wastewater. The TiO2 sol doped with Fe3+ ions was prepared by sol-gel processing. The influences of the process conditions of coating nanophotocatalytic material-Fe3+-TiO2 film on the surface of porous ceramic filter by dipping-lift method on the performance of porous ceramic filter were studied. The porous ceramic filters have two functions at the same time,filtration and photocatalytic degradation. The results of this study showed that the pH and viscosity of the sol,amount of Fe3+ ions doped as well as the coating times greatly affect the quality of coating film,the performance parameters and the photocatalytic activity of the porous ceramic filter. When the pH of the sol is 3-4,the viscosity is about 6 mPa・S,the amount of doped Fe3+ ions is about 2.0 g/L,the porous ceramic filter has been shown to have the best filtering performance and photocatalytic activity. In this condition,the porosity of porous ceramic is about 42.5％,the pore diameter is 8-10μm. The degradation of methyl-orange is 74.76％ under lighting for 120 min.
作 者：Kejing Xu 作者单位：Shandong University of Technology,Department of Materials Science and Technology,Zibo 255049,China 刊 名：天然气化学(英文版) ISTIC SCI英文刊名：JOURNAL OF NATURAL GAS CHEMISTRY 年，卷(期)：2005 14(3) 分类号：O6 关键词：nanometer Fe3+ TiO2 film porous ceramic filter photocatalysis organic wastewater【preparation是可数吗】相关文章：
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