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Synthesis and Performance Characterization of a Low Adsorption Clay-resistant Polycarboxylate Superp
A low adsorption clay-resistant polycarboxylate superplasticizer(KN-PC)was synthesized using acrylic acid and isopenteno......
本试验旨在研究金红密植(不同密度)的效应及不同密度的树体丰产参数。该试验获得了八年生密植金红折合亩产4387kg的高额产量。证明......
This paper presents a 10-GHz 8-bit direct digital synthesizer(DDS) microwave monolithic integrated circuit implemented i......
A convenient synthetic method with high yields for aryl-incorporated ditosylates by reaction of aryl-incorporated diols ......
Synthesis and Performance Characterization of a Low Adsorption Clay-resistant Polycarboxylate Superp
A low adsorption clay-resistant polycarboxylate superplasticizer (KN-PC) was synthesized using acrylic acid and isopente......
As a novel class of spirofluorenes,spirobifluorene (SBF) and spiro[fluorene-9,9'-xanthene]derivatives (SFXs) have orthog......
Highly crystalline gold nanoribbons have been synthesized via a simple method by L-cysteine reduc-tion of aqueous chloro......
Flower-like Cu_2SnS_3 nanostructures composed of nano-flakes were successfully synthesized by solvothermal technique at ......
Low-Frequency Noise in Gate Tunable Topological Insulator Nanowire Field Emission Transistor near th
Low-frequency flicker noise is usually associated with material defects or imperfection of fabrication procedure.Up to n......
An event-related potential observation of preposition processing in Chinese: Is N280 a specific comp
BACKGROUND:Studies have shown that closed-class words,such as prepositions and conjunctions,induce a left anterior negat......
β-C_3N_4 compound is a new hard material predicted by Liu and Cohen with theoretical calculation and so far it has not......
It is usually reported that reaction between carbonyl and P2S5 produce thiono group compound. The Products from carbonyl......
A Green and Facile Solid-state Synthesis Method for the Preparation of Diazenecarboxamide Azo Compou
Eleven new-typed azo compounds were synthesized in good yields by dehydrogenating the corresponding aryl substituted sem......
Br(?)nsted acidic ionic liquids based on imidazolium cation were employed as a series of environmentally benign catalyst......
8-Oxocoptisine 1,a natural protoberberine alkaloid,can be more easily achieved starting from readily available and inexp......
介绍了酞菁钴配合物及其酞菁钴衍生物的不同合成方法及其催化剂、溶剂等,并介绍了酞菁钴及其衍生物在石油工业、化肥工业、电池行......
β-catenin accumulation in nuclei of hepatocellular carcinoma cells up-regulates glutathione-s-transf
AIM: To identify the differentially over-expressed genes associated with β-catenin accumulation in nuclei of hepatocell......
A. Introduction More than a score of years have passed since the emergence of what is now generally referred to as acas......
In this paper we present some results from our research on representation methods and architecturalmodel of UIMS, suita......
目的:设计合成3,4-二苯基方酸新衍生物,并测定其体外抗肿瘤活性.方法:以3-(3'-羟基-4'-甲氧基苯基)-4-(3,4,5-三甲氧基苯基)-3-环......
Synthesis, Structure, and Surface Photo-electric Properties of a New Zn(Ⅱ) Coordination Complex Cons
本文通过对荣华二采区10...
Radio frequency interference(RFI) is becoming more and more frequently, which makes it an important issue in SAR imaging......
Synthesis of a New Type of Amphilic and Water - soluble Tertiary Phosphine Ligands Substituted by an
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Critical temperatures and pressures of reacting mixture in synthesis of dimethyl carbonate with meth
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
以CoIIIW11和有机硅烷为原料,在pH=1,乙醇-水(体积比=2∶1)的混合溶剂中,首次合成了Keggin型有机硅取代的钨钴酸盐[CoIIIW11O40(Si......
GSP煤气化技术具有原料适应性广,气化炉和烧嘴设计独特新颖,技术经济指标先进,环保性能良好等特点,是一种先进的煤制合成气工艺技......
对硝基苯胺经酰胺化、环化、双氯取代、消除反应得关键中间体3-(吗啉-4-基)-1-(4-硝基苯基)-5,6-二氢-1H-吡啶-2-酮(5);同时,对甲......
采用一步法合成了离子液体1,3-二丁基咪唑氯代盐BBimCl,并用色谱柱对其进行了精细纯化;通过红外分析和核磁共振分析表明纯化过的离......
Synthesis of a New Type of Amphilic and Water - soluble Tertiary Phosphine Ligands Substituted by an
The highly water-soluble phosphine ligands Na2O3PCH2CH2NH(CH2CH2O)nCH2CH2N(CH2PPh2)2 (n=1,2,3) were prepared by a new an......
合成了一种新的含异马来二氰基二硫烯(i-mnt)镍(II)配阴离子的2-萘亚甲基哌啶([2-NaMePid]+)盐(简记为[2-NaMePid]2[Ni(i-mnt)2])......
以硅钨酸和2,3-吡啶二羧酸为配体合成了一种新型的配合物Nd2(C7H4NO4)2(SiW12O40)·18H2O,并对其进行了元素分析、红外光谱、紫外......
Synthesis of 3-naphthylcyclohexene by the Heck reactions of bromonaphthalene and naphthyl triflates with cyclohexene cat......
合成了一维配位聚合物{[Cu(tzda)(H2O)3].3.5H2O}n(H2tzda为1,3,4-噻二唑-2,5-二硫代乙酸),对其结构进行了红外、元素分析和X射线......
合成导向矢量最大似然算法对平坦阵地的米波雷达测高具有较高的精度,但在高山阵地下,会出现仰角空间谱模糊的现象,测高精度较低。......
夹具是机加工中一种重要的辅助工具。为解决生产触媒用的真空电炉拐臂的 修复而设计了花盘夹具，解决了修复电炉拐臂的问题，还可用来......
老年人保健品诈骗犯罪具有职业化、犯罪对象范围明确、犯罪手段多元、隐蔽且变异性强等特点。传统侦查方法面临受害人不能及时报案......
事件抽取在自然语言处理应用中扮演着重要的角色,如股票市场趋势预测.传统事件抽取较为关注触发词和论元所属类型的正确性,较少地......
在显著性目标检测算法中,流形排序的检测方法存在先验背景假设和目标检测不完整的问题.针对该问题,在流形排序算法基础上,融入背景......
猫跳河流域经过３０多年以水能为先导的开发，已成为贵州经济最发达的区域，但是。由于区内工业集中、人口膨胀等多种因素的影响，也导致环境......
综述了近二十年来聚合表面活性剂的合成及主要应用,详细阐述了国内外对低聚表面活性剂在合成、界面吸附和溶液聚集行为方面的研究......
合成了N-亚水杨基丙氨酸席夫碱及其与过渡金属Cu（Ⅱ）、Zn（Ⅱ）、Ni（Ⅱ）和邻菲罗啉的三元混配配合物。用元素分析、摩尔电导、红外光谱、紫......
以废旧聚苯乙烯泡沫塑料为原料,经硝化、还原、重氮化及与β-萘酚偶合共四步反应,制备聚苯乙烯偶氮聚合物。硝化反应中,采用98%浓......
在温和条件下合成了2种新的二茂铁基Schiff碱衍生物，甲酰基二茂铁缩2，4-二硝基苯腙(Ⅰ)及乙酰基二茂铁缩2,4-二硝基苯腙(Ⅱ)，采用现代......
讨论了合成条件对ＡＭＰＳ／ＡＡ共聚物降粘剂降粘性能的影响，并对产物的降粘能力进行了初步评价。......
以氯化亚砜作氯化剂，4-哌啶甲酸（Ⅰ）在无水乙醇中以95％的产率酯化生成4-哌啶甲酸乙酯盐酸盐（Ⅱ）；化合物Ⅱ在丙酮中与氯乙酸乙酯在碳酸钾的......
由醇作起始剂与环氧氯丙烷聚合,其聚合物与叔胺作用生成聚醚型季铵盐,该类聚合物是处理污水的高效阳离子型絮凝剂.本文详细研究了......
针对多断条转子绕组非对称特点,采用拓展的综合矢量法建立了多断条感应电动机易于求解的数学模型.通过增大故障导条阻值,仿真了由......
通过Ba调变制备了一系列六铝酸盐催化剂LaxBa1-xNiAl 11O19-δ,并通过XRD、 XPS、TPR、TEM、BET和TGA等技术对催化剂的结构、性质......
本文以稀土固体超强酸SO4^2-/TiO2/La^3+为催化剂，苯乙酸和甲醇为原料合成了苯乙酸甲酯，考察了影响反应的因素。结果表明，醇酸比为3：1，......
本文从很多企业依旧依靠价格竞争的现状出发,提出了低成本与差异化融合的五个途径,目的是提高顾客的满意度,为顾客创造更多价值,为......
