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Acidic polysaccharides including glycosaminoglycans(GAGs)and non-GAGs containing uronic acid may be involved in biologic......
To optimize the preparation process of chitosan microspheres and study its loading capacity, chitosan microsphere was pr......
A series of CeO_2-Co_3O_4 mixed oxide catalysts with different Co/(Co+Ce) atomic ratios were synthesized by citric acid ......
The experiments were conducted in compound channels with vegetated floodplains for investigating the influence of vegeta......
A simple method of balun synthesis is proposed to estimate the balun structure in the operating frequency band.Then,a ca......
A new 22-element small signal equivalent circuit model for the AlGaN/G N high electron mobility transistor(HEMT) is pres......
Electrostatic chucks are one of the core components of semiconductor devices. As a key index of electrostatic chucks, th......
The increased use of platinum group elements (PGE) as automobile catalysts has led to concern over potential environment......
We propose a depolarizer based on the principle of a collection of half-wave plates with randomly distributed optic axes......
Graphene-Mn3O4 (GMNO) hybrid porous material is prepared by a hydrothermal method and its performance in carbon dioxide ......
The thermal features of the nanograin boundary were described by a developed thermodynamic model.Using the nanocrystalli......
CuO nanowire arrays were prepared by oxidation of copper nanowires embedded in anodic aluminum oxide (AAO) membranes. Th......
Raman spectroscopy has been widely used to identify the physical properties of carbon nanotubes(CNTs),and to assess thei......
The gold(Au) nanorods with various aspect ratios are obtained by a seed-media method in low pH growth solution.Transmiss......
Metsulfuron-methyl is one of the widely used sulfonylurea herbicides.However,approximately half of the ap- plied metsulf......
In this paper,we propose a political-economy model of China that explains both the rapid economic growth and frequent ra......
A player displays his sartorial splendor while inspecting his hand, during one of the many regular Sunday morning card g......
Wireless sensor networks are envisioned to be an integral part of cyber-physical systems,yet wireless networks are inher......
In underwater optical wireless communication(UOWC),a channel is characterized by abundant scattering/absorption effects ......
以三嵌段共聚物F127为模板剂,Na2SiO3·9H2O作为硅源,Ce(NO3)3·6H2O为铈源,在酸性条件下,微波辅助一步合成了三维有序介孔CeO2-SB......
以[Zn(NH3)4]2+为前驱体,在不同的溶剂热条件下合成了多刺球状、镂空球状、花状、铅笔状、棒状等微观形貌的氧化锌, XRD结果显示氧......
构建了携带鸡白细胞介素2（IL-2）编码基因的重组真核表达质粒,通过复凝聚法制备了含有该重组真核表达质粒的壳聚糖纳米粒子。对制备的......
在碱性条件下,以十六烷基三甲基溴化铵为模板剂,正硅酸乙酯为硅源,硝酸锶为无机源,用水热法合成了新型介孔分子筛Sr-MCM-41,对其用......
[目的]制备薯蓣皂苷元微胶囊并对其性能进行表征,探讨微胶囊的体外抗肿瘤活性。[方法]通过喷雾干燥技术制备薯蓣皂苷元微胶囊,采用......
通过对碳纳米管氧化，合成了L-半胱氨酸修饰碳纳米管。运用红外、差热-热重分析、透射电镜对该复合物进行了表征。借助循环伏安法研......
数字图书馆只有特色化才能在网络环境下拥有一席之地.文章对数字图书馆的馆藏特色化、服务特色化、管理特色化和网站建设特色化四......
在当前教育界形成了一阵多媒体网络热潮的时候,本文以一分为二的观点,简要分析其特征,并介绍了国外有关构建网络学习环境的四条原......
通过对叔丁基苯酚的聚合反应,再脱去叔丁基,依次得到两种有用的杯[4]芳烃,它们是大多数杯芳烃衍生物的合成子.本文参考现有文献,将......
采用水热合成法制备La3＋掺杂后的锶铁氧体（LaxSr1-xFe12O19）颗粒,其中掺杂比x分别为0.00、0.05、0.10、0.15、0.20、0.30。借助X射线......
合成了苯乙酮水杨酰肼Schiff碱,通过红外,元素分析,质谱,紫外,对合成的标题化合物进行了表征,还对其荧光活性进行了研究。......
以吡啶-2，6-二甲酸、噻吩-2，5-二甲酸和1，2，4，5-苯四酸为原料，经酯化反应得到吡啶-2，6-二甲酸二甲酯（L1）、噻吩-2，5-二甲酸二甲酯（L2）和1，2，4，5-苯......
以氮杂杯[6]芳烃和迭氮化钠为原料，四氢呋喃为溶剂，在为40～45℃合成了氮杂杯[6]芳烃迭氮化衍生物，通过薄层色谱分析法、红外光谱分析法......
研究了氢氧化钠介质皂化条件下,用草酸溶液从负载铈的P507有机相中直接反萃取沉淀铈的试验结果。利用红外光谱（IR）、X射线衍射（XRD）、......
以廉价的2-氨基-噻唑-4-甲酸甲酯为原料,经NaNO2重氮化后脱去氨基,次磷酸还原制得噻唑-4-甲酸甲酯,再用KBH4/LiCl还原,次氯酸钠氧......
文化是一个比较复杂的事物，具有多种属性，是政治属性和经济属性的统一，也是意识表态和经济基础的统一，文化的经济属性重要表现在五个方......
研究了低水胶比下粉煤灰的掺量对自密实混凝土的流动性、稳定性、坍落度损失及强度的影响规律，根据试验结果，探讨了粉煤灰掺量对自密......
以偶氮二异丁腈作引发剂，N-（1-萘基）马来酰亚胺和苯乙烯为原料，采用溶液聚合法合成了N-（1-萘基）马来酰亚胺／苯乙烯共聚物，分析了原料配比、......
利用恒电位电化学沉积方法在ITO导电玻璃基底上制备了纳米ZnO薄膜，并利用原子力显微镜进行了形貌表征。结果显示，当沉积电压为-0．8V时......
用自制的5-硝基水杨醛设计合成5-硝基,N(2-磺酸基乙基)水杨醛亚胺Schiff碱,用元素分析和红外光谱表征其组成和结构,并进行抑菌活性......
