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Temporal key integrity protocol (TKIP) is a sub-protocol of IEEE 802.11i. TKIP remedies some security flaws in wired equ......
Suppressing irreversible phase transition and enhancing electrochemical performance of Ni-rich layer
Ni-rich layered oxide LiNixCoyMn1-x-yO2(x≥0.8)is the most promising cathodes for future high energy automotive lithium-......
Intermolecular cyclocondensation reaction of 3,4-dihydropyrimidine-2-thione under the Mitsunobu reac
A self-intermolecular cyclocondensation reaction of 3,4-dihydropyrimidine-2-thione(DHPM) to give a novel tricyclic struc......
Novel phthalimide derivatives(4a,4b and 6a-6e)were designed as hybrids of thalidomide and NO-ASA,and their chemical synt......
Chemoselective synthesis and cytotoxic activity of a series of novel benzo[1,4]oxazin-3-one derivati
That tetraacetonitrile copper perchlorate catalyzes intramolecular amidation of arenes was found to be a new strategy fo......
Synthesis and biological evaluation of 4-methyl-1,2,3-thiadiazole-5-carboxaldehyde benzoyl hydrazone
To find new lead compounds with high biological activity,a series of novel 4-methyl-1,2,3-thiadiazole-5-carboxaldehyde b......
Various silatrane compounds were studied by means of ~(15)N NMR spectroscopy. Thequantum chemical calculations of some ......
Bamboo and Rattan(B&R) resources play a very important role for ecological and economical development as the two most im......
COPOLYMERIZATION OF ETHYLENE AND PROPYLENE WITH (CpCH_2CH_2CH=CH_2)_2MCl_2(M=Zr,Hf)AND Cp_2ZrCl_2 CA
(CpCH_2CH_2CH = CH_2)_2MCl_2(M=Zr, Hf)/MAO and Cp_2ZrCl_2/MAO (Cp=cyclopentadienyl; MAO=methylaluminoxane) catalyst sys......
Recently considerable attention has been paid to the ABO_3 type RE complexoxides since they have special electrical-mag......
Study of molecular recognition has been playing an important role in biomimeticchemistry. β-cyclodextrin (β-CD), the ......
Quinazoline derivatives are well known for their wide range of bio-logical activities.At the same time oxime derivative......
The sodium borohydride reduction of aldehydes and ketones to corresponding alcohols has been accomplished via the use o......
Synthesis, Characterization and Cytotoxicity of Ammine/Methylamine Platinum(Ⅱ) Complexes with Carbox
Seven novel platinum(Ⅱ) complexes [Pt(Ⅱ)(NH_3)(CH_3NH_2)X_2](Ⅰ—Ⅶ)(X: CH_3COO -, CH_2ClCOO-, CHCl_ 2COO -, C_ 6H_ 5......
cis-1,2-Disubstituted cyclododecanes 2 were synthesized by sodium borohydride reduction of 2-monosubstituted cyclododeca......
Thiazine sugar derivative 2 was synthesized and characterized by IR=NMR and H RMS=and its crystal structure was determin......
Mass Spectrometric Studies on Metal-hexafluorobenzene Anionic Complexes(M=Ag, Au, Pd, Pt, Pb and Bi)
The anionic products from the reactions between metal(M=Ag, Au, Pd, Pt, Pb and Bi) vapour produced by laser ablation and......
A series of La0.7–xSmxSr0.3MnO3, La0.7–xGdxSr0.3MnO3, and La0.7–xDyxSr0.3MnO3 (x=0.00, 0.10, 0.20, 0.30) samples were......
Poly(ether ether ketone)s(PEEK) are a class of high performance engineering thermoplastics known for their excellent the......
7-Deazapurines:Synthesis of new pyrrolo[2,3d]pyrimidin-4-onescatalyzed by a Brφnsted-acidic ionic li
Some new 2-aryl-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-ones have been prepared through cyclocondensation of 2-amino 1H......
In this work, partial thermodynamic properties of polyhydroxylated dibenzo-p-dioxins (PHODDs) are calculated by density ......
Zr1-xTixNiSn0.975Sb0.025 (x=0, 0.15, 0.25, 0.5) half-Heusler thermoelectric materials have been prepared by levitation m......
Two topics were focused.The first one was about the gamma-ray scintillator,Pr3+:Lu3Al5O12(LuAG) .The second one was abou......
The validation of 14N evaluation for preliminary CENDL-3.1 was performed with neutron angular flux experiment FNS. The a......
Advances in computing technology promise to aid in achieving the goals of healthcare.We review how such changes can supp......
研究了羧甲基壳聚糖的制备方法和最佳工艺条件.实验结果表明:氢氧化钠与氯乙酸重量比为0.9∶ 1,控制反应温度55 ℃,反应时间4 h,所......
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以玉米淀粉为原料,通过醚化和酯化双重作用,制备羧甲基辛烯基琥珀酸淀粉衍生物（OS-CMS）。探讨了反应温度、反应时间、pH值、甲醇浓度......
通过分析三能级原子与拉曼激光相互作用退化的二能级演化方程组，发现通过代换法能将其转化为常系数，可十分方便地求得方程组的解．再将......
通过对欧洲各研究机构的信息数据分析,对"RoHS"指令的要求进行深一层的分析,并对指令在今后一段时间的动态进行了阐述.制造商和供......
以1,2-二氰基二硫烯二钠盐（Na2mnt）,CuCl2·2H2O和溴化3,5-二氟苄基三苯基季鏻盐（[BiFBzTPP]Br）为原料,成功合成了1种新的含1,2-二......
随着科技进步和社会生产力的提高,在资源型区域,人口剧增、资源过度消耗、环境污染等问题越来越严重地阻碍着经济的发展.对资源型......
本文证明了ｎ次区间多项式Ｓｃｈｕｒ稳定的充分条件是２＾ｎ个多项式皆Ｓｃｈｕｒ稳定，并进一步给出了一种能逼近区间多项式Ｓｃｈｕｒ稳定充要条件的判别方法。......
通过茚和芳香醛在相转移催化剂三乙基苄基氯化铵存在下发生缩合反应,合成了6个标题化合物,测定了它们在17种溶剂中的紫外光谱,在极......
对来自小黑麦与小麦杂种的３个花粉株系，ＤＨ２２０－４，ＤＨ２２０－５和ＤＨ２２０－１４进行了形态性状观察，染色体组成分析和抗白粉病鉴定。经过染色体形态和数目观察、原位杂交、......
根据实验研究结果建议从金刚石镀膜、胎体添加稀土元素两个方面来提高金刚石的热稳定性、胎体对胎体的包镶能力及其使用性能 .这两......
由于单混沌系统加密存在密钥空间小,安全性低的问题,提出了一种基于二维超混沌与三维混沌复合的图像加密算法。首先采用Kawakami超......
Differences in English and Chinese Cohesive Devices and Their Application in English-to-Chinese Tran
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Cu2ZnSnS4(CZTS)是一种非常有前景的p型半导体材料。然而,其光电转换效率受到大量CuZn和ZnCu反位缺陷导致的开路电压损失的限制。......
从分工经济与城市规模之间关系的角度，运用Dixit-Stiglitz模型框架下经济活动的规模收益递增原理，在城市内部最终产品生产企业利润最......
Aim: The aim of the present study was to examine the effectiveness of collagen membrane (CM) in regenerative therapy wit......
通过对比实验研究了增压柴油机燃烧甲醇柴油和生物柴油对发动机动力性、经济性和排放特性的影响。研究结果表明：对于实验发动机，在喷......
本文认为,在基于供应链竞争的综合议价能力和基于替代竞争的反替代能力所构成的企业竞争力二元结构矩阵中,存在粗放型和集约型两条......
实验发现卤代烷既可以发生1-1消除卤化氢的反应也可以发生1-2消除卤化氢的反应。究竟那种消除反应占优势,主要由取代基团决定,我们......
Effect of Substitution of Fermented Kapok Seed （Ceiba petandra） to Soybean Meal on Production and Eg
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Ladderlike polychloropropylsilsesquioxane (CP-T) was first synthesized by 'stepwise coupling polymerization'.The......
