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Synthesis and Electrochemical Behavior of Electroactive Bistetrathiafulvalene-attached Thiacalix[4]a
Tetrabromoalkylthiacalix[4]arenes(1a and 1b) reacted with excess bis(tetraethylammonium)-bis(1,3- dithiole-2-thione-4,5-......
In this communication,we report four component condensations of acetophenone,arylaldehydes,arylthiol,and malononitrile i......
Two new 2-(quinonylcarboxamino)benzoates, named aconicarmiquinamides A(1) and B(2), were isolated from an aqueous extrac......
Synthesis of novel cyclohexanediol-derived chiral phosphite ligands and their application in the Cu-
A series of novel chiral diphosphite ligands have been synthesized from(1R,2R)-trans-1,2-cyclohexanediol,(1S,2S)-trans-1......
To study the applicability of the basalt fiber through various experimental works in thermal and chemical environments, ......
Talc-bearing serpentinized peridotites from the southern Mariana forearc:implications for aseismic c
The serpentinized peridotites overlying the subducted zones in the Izu-Bonin-Mariana(IBM) arc system have been interpret......
February 1992 Volume 1 Number 1Characteristic studies of MoS2./K+-SiO2 catalysts for synthesis of mixed alcohols from sy......
N-Boc-2, 5-bis(trimethylsilyl)pyrrolidine 4 was synthesized from the reaction of N-Boc-pyrrolidine 1 with trimethylsilyl......
Changes of composition and structure of various samples of polymethylsilsesquioxane (PMSQ) pyrolysed at different temper......
High spinning speed 1H magic-angle spinning nuclear magnetic resonance (1H MAS NMR) was used to detect surface hydroxyl ......
Spectral evolution of NIR luminescence in a Yb~(3+)-doped photonic crystal fiber prepared by non-che
Silica-based Yb 3+-doped glass is prepared by non-chemical vapor deposition.The drawn photonic crystal fiber(PCF) has a ......
Lightweight porous silica foams with extreme-low dielectric permittivity and loss for future 6G wire
In the next generation wireless communication systems operating at near terahertz frequencies,dielectric substrates with......
In recent years,recycled glass has been widely used as aggregate replacements in concrete. Owing to the aesthetic potent......
Effect of Thermal Treatment and Acid Leaching Process on Pore Characteristics of Nanometer Porous Gl
Porous glass was prepared by thermally treating sodium borosilicate glass for different time, the effect of thermal trea......
Na superionic conductor(NASICON) nanoparticles were synthesized by a modified sol-gel method and sintered at a temperatu......
Microwave Absorption and Shielding Property of Composites with FeSiAl and Carbonous Materials as Fil
Silicone rubber composites filled with FeSiAl alloys and multi-walled carbon nanotubes(MWCNT)/graphite have been prepare......
Electroless nickel plating has the advantages of good wear-resistance,good corrosion-resistance,bright appearance,weld a......
Huperzine V, a new Lycopodium alkaloid, was isolated from the whole plant of Huperzia serrata, and the absolute stereoch......
Sm3+∶SiO_2 thin film with high concentration of Sm3+ was prepared by sol-gel method using tetraethoxysilane(TEOS) as pr......
New functionalized spiroxazine containing azo group has been prepared and its photochromic mechanism has been investigat......
Apatite-type lanthanum silicate with special conduction mechanism via interstitial oxygen has attracted considerable int......
采用层层自组装(LBL-SA)技术制备了新型的氧化铝包裹硅胶(Al2O3/Si O2)核-壳型色谱填料。对该填料进行了光电子能谱表征、扫描电镜......
The phosphorus-containing PODIPY 1 as a chemosensor can detect Hg~(2+) by a color change from pink to violet red without......
Influence of Mold Preheating and Silicon Content on Microstructure and Casting Properties of Ductile
The effects of the mold preheating and the silicon content of ductile iron on the percentage of carbides,graphite nodule......
Exo-tetrahydrodicyclopentadiene (exo-TCD) is an important high-energy fuel.Silicotungstic acid (SiW) immobilized on H-ty......
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......
SYNTHESIS OF HYBRID MESOPOROUS POLYSTYRENE-SILICA MATERIALS WITH NON-SURFACTANT CITRIC ACID AS TEMPL
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......
以正硅酸乙酯(TEOS)为硅源,采用溶胶-凝胶结合超临界CO2干燥制得高纯度微米级液相色谱填料基质多孔硅球。采用BET, TG-DTG, SEM, FT-I......
基于Stillinger-Weber势对硅纳米晶体薄膜的热膨胀性质进行了分子动力学模拟.研究表明,硅纳米晶体薄膜表面层原子的二聚现象引起薄......
High-quality SiO2 colloidal crystal multilayers were fabricated from ethanol solutions by the vertical deposition method......
SYNTHESIS OF HYBRID MESOPOROUS POLYSTYRENE-SILICA MATERIALS WITH NON-SURFACTANT CITRIC ACID AS TEMPL
Hybrid mesoporous polystyrene-silica materials were successfully prepared through HCl-catalyzed sol-gelreactions of tetr......
对系统取心井岩心样品的岩石学研究表明,下奥陶统亮甲山组结晶白云岩中的硅岩并非交代成因,而是后期充填在由怀远运动(亮甲山期末)形成......
介绍了负载试剂型催化剂的制备方法,综述了几种不同物质做载体的Lewis试剂催化剂最新研究进展和应用。......
在前人研究的基础上,用实验模拟高炉滴落带的方法,对硅的还原过程中目前尚未清楚的[Si]的主要来源问题进行了研究,确定了焦炭灰分......
利用反相微乳液体系制备出粒径均一的中空氧化硅纳米粒(SHN),以此为基础,再利用水热法通过自组装合成了碳点-中空氧化硅纳米粒复合材......
目的探讨用中草药贴膏防治疤痕增殖疗效。方法用中草药贴膏治疗疤痕增生和疤痕疙瘩患者共152例。结果从临床应用中提示疗效与创面愈合......
对草坪草海滨雀稗和狗牙根进行不同硅源处理后接种褐斑病菌,并对这两种草叶片CAT、POD、SOD及PAL酶活性进行了测定。结果表明,硅处理......
分别以蔗糖和硅酸钠为碳源和硅源,硫酸为催化剂,采用溶胶-凝胶法和碳热还原法合成SiC;以其为载体,Pd为活性组分,CeO2为助剂,采用浸......
分析了宁波市9个县(市、区)的747个土壤样品的有效硅含量,并探讨了土地利用方式、土壤类型、地貌类型及土壤化学性质对土壤有效硅......
通过对钢轨闪光对焊的预热阶段和烧化阶段进行分析,研究这两个阶段所形成的夹杂物和氧化物的情况,并结合对第三唇中的夹杂物分布及......
目的探讨泪道探通联合硅胶管置入治疗泪道阻塞的临床疗效。方法对380例(420眼)泪道阻塞患者采用泪道探通术后,依据泪道阻塞部位置入......
研究了静磁场和梯度磁场的强度和方向对Al-15.7%Si合金宏观和微观凝固组织的影响.结果表明,在不同的磁场条件下,从过共晶合金中析......
抗鸟害水稻材料是一种稀缺的种质资源,研究其稻谷颖壳的表面结构(颖壳稃尖闭合程度,稃毛的长度、直径和密度,颖壳包裹米粒松紧度),以及与......
本文论述了关于UHVCVD系统电阻丝辐射加热装置传热规律的物理基础;并利用它们对硅片升温的瞬态过程进行了研究,取得了与实验相近的结果。这......
采用各向异性腐蚀与各向同性腐蚀相结合的技术和特殊的硅-硅键合技术,成功地研制出了一种新型真空微电子压力传感器。测试分析结果......
以高铝矾土为主要原料,在超低水泥结合的高铝浇注料中加入3%~9%(w)的Si粉,振动浇注成型试样,经烘干后,分别在空气和氮气气氛下于1 4......
睾酮经皮吸收膜剂选用硅橡胶为骨架材料,由铝塑背衬层、含药膜层、压敏胶层、剥离纸组成。并用HPLC方法检测睾酮体外释药及经皮渗透速率......
目的:观察化浊护肝汤治疗慢性酒精性肝病的临床疗效。方法:将208例确诊为慢性酒精性肝病的患者随机分为治疗组和对照组,对照组102......
针对低温NO氧化催化剂抗水性和抗硫性能差等问题,采用silicalite-1分子筛为催化剂,在NO进口浓度为0.06%条件下,考察了相对湿度(0%~......