工学 >>> 力学 农业工程 林业工程 工程与技术科学基础学科 测绘科学技术 材料科学 矿山工程技术 石油与天然气工程 冶金工程技术 机械工程 光学工程 仪器科学与技术 动力与电气工程 能源科学技术 核科学技术 电子科学与技术 信息与通信工程 控制科学与技术 计算机科学技术 化学工程 纺织科学技术 印刷工业 服装工业、制鞋工业 轻工技术与工程 食品科学技术 土木建筑工程 水利工程 交通运输工程 船舶与海洋工程 航空、航天科学技术 兵器科学与技术 环境科学技术 安全科学技术 工业设计
搜索结果: 1-11 共查到工学 urea相关记录11条 . 查询时间(0.011 秒)
Enhancing the fire safety of epoxy resin (EP) concomitant with less mechanical performance degradation is still a challenge for traditional flame retardants. Hence, polypyrrole (PPy) was used as a fil...
The optimum enrichment parameters of main omega-3 polyunsaturated fatty acids (ω-3 PUFAs) from Rana egg oil were investigated. Firstly, it was optimized the saponification condition. Secondly, the PUF...
SCR后处理技术是目前降低柴油机NO x 排放量的主流技术,首先基于自主开发的SCR控制系统,阐述了系统的组成、工作及反应原理。其次通过协调控制策略以确保系统内部各模块运转正常,通过原机排放模型和化学反应动力学模型作为前馈控制得到尿素基本供给量,通过排温修正模型进行瞬态排温修正,利用发动机排温和储氨量的对应关系对氨泄漏进行有效控制,根据OBD法规要求当发动机NO x 排放量超标时进行报错。最后对系...
The study focuses on the absorption rates of NO2, SO2 and a mixture of these two acid gases into urea solution in packed bed column. The absorption rate was studied as a function of absorbent temperat...
The mechanical properties of urea-formaldehyde (U-F) microcapsules were determined using a micromanipulation technique and a theoretical model. Loading-unloading, compressing and holding, and compress...
Chemical fixation of carbon dioxide (CO2) may be very important in the future as a solution for the problem of increased atmospheric CO2 levels. Recent developments for chemical fixation of CO2 to cy...
Segmented polyurethane-urea (SPUU) is a block copolymer which consists of hard and soft segments. SPUU films with different ratios of ethylenediamine (EDA) and propylenediamine (PDA) as chain extend...
A simple and inexpensive procedure involving saponification and methylation in wet biomass, winterization and urea complexation in a sequential way has been developed in order to concentrate docosahex...
Midbloom alfalfa hay was baled (16% moisture) and treated with approximately 2% anhydrous NH3 (percentage of DM). Concentrations (percentage of DM) of total N (4.7% vs. 3.4%), NPN (1.3% vs. 0.4%), sol...
期刊信息 篇名 Urea-based Hydrothermally-derived Homogenous Nanostructured Ce1-xZrxO2 (x = 0 ( 0.8) Solid Solutions: A Strong Correlation Between Oxygen Storage Capacity and Lattice Strain 语种 英文 撰写或编译 撰写 作者 ...
期刊信息 篇名 Grain Size-Dependent Electrical Conductivity in Scandia-Stabilized ZirconiaPrepared by A Mild Urea-Based Hydrothermal Method 语种 英文 撰写或编译 撰写 作者 Gang Xu,Ya-Wen Zhang*,Chun-Sheng Liao,Chun-Hua Ya...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...