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Silicon nitride passivation layer existed in standard CMOS process is used as hydrogenous ions sensitive layer, ISFET with multi-layer floating electrode structure works as the sensing unit.

介绍了一种基于上华0.6μmCMOS工艺实现的pH值传感器集成电路的设计和研究,它采用标准CMOS工艺提供的Si3N4钝化层作为氢离子敏感层,并以多层浮栅结构的ISFET作为传感单元。

The Diels-Alder cycloadditions of [60] fullerene for preparation of optical limitingmaterials are discussed in chapter 3 and 6. Soluble cycloaddition derivatives of 〓aresynthesized by the reaction of 〓 with indene,1,1'-biindene andcyclopentadiene derivatives.〓Particular, the Diels-Alder cycloaddition of 〓 with1,1'-biindene under controlled conditions affords the stable monoadduct 〓〓of novel structure, which was confirmed by HPLC, FTIR, FD-MS,〓NMR,〓 NMR, HMQC and HMBC spectra, Its two bridgehead cage carbons resonate at70.91ppm, The 〓 NMR spectra showed 38 lines consistent with the 〓 symmetryassociated with [6,6] addition. The 〓 shows similar optical limitingproperties to that of 〓 in toluene for 8ns laser at wave length 532nm. Moreover, thehigh solubility of this adduct in polar solvents such as THF, acetone enables itsincorporation into sol-gel glass matrix. The thin films prepared via the sol-gel methodshow improved OL behaviour compared to those of 〓. The langmuir-Blodgett filmformation and uv-visible absorption of 〓 are also investigated. LBmonolayer of this compound is prepared on the air-water interface at 〓 mol/l. In chapter 4, three water-soluble derivatives of [60] fullerene: fullerol(1), theaddition product (2)of fullerol (1)with polyvinylpyrrolidone and fumaric acidderivative of 〓(3) are synthesized and characterized.

通过Diels-Alder环加成反应,用茚〓和1,1'-联茚〓及取代茂合成了一系列可溶性的〓环加成衍生物,发现可控制反应条件,使1,1'-联茚与〓反应,并高产率地得到具有新颖结构的单加成物,用HPLC、FTIR、FD-MS 及〓、HMQC、HMBC等多种波谱技术对其结构进行表征,测得它的两个〓杂化的桥头碳的化学位移为〓ppm,证明生成的衍生物为6∶6闭式环加成,〓NMR谱中共给出38个信号,表明〓联茚衍生物分子具有〓对称性;在波长532nm,脉冲宽度8ns的激光下,〓联茚衍生物的甲苯溶液的光限幅性能与〓的甲苯溶液相近,由于〓联茚单加成衍生物熱稳定性好,在四氢呋喃,丙酮等极性溶剂中溶解性好,能分别均匀地掺入溶胶-凝胶中,已发现它的溶胶(so1)光限幅性能优于纯〓的光限幅性能;使用Langmuir-Blodgett技术将〓联茚衍生物在空气和水的界面进行了LB单层膜和多层膜实验以及UV-Vis吸收谱研究,通过等温压缩曲线测试,证明浓度为〓〓时,〓联茚衍生物能够形成单层膜。

The pigment in colored cotton fibers was extracted by methanol at room temperature. The results of color reactions HCl-Mg reaction, NaBH4 reaction, NaOH reaction, FeCl3 reaction and Pb(Ac2 reaction of the pigment extractive showed that the pigment extracted by methanol was flavone or flavonol with two adjacent hydroxide groups (Table 2, Fig. 1). The results of UV spectral analysis further proved that the pigment extracted by methanol from brown fiber belonged to flavone with two adjacent hydroxide groups in B ring, and that from the green fiber contained not only flavone but also flavonols with two adjacent hydroxide groups both in A ring and B ring and indican replaced a hydroxide group at 3-site of A ring Fig.

通过盐酸-镁粉反应、四氢硼钠还原反应、碱反应、醋酸铅反应、氯化铁反应和紫外光谱吸收的分析表明,甲醇室温提取的棕色棉纤维色素可能是黄酮类化合物,B环上带有邻二酚羟基;甲醇室温提取的绿色棉纤维色素除黄酮类化合物外,还含有3-位羟基被糖甙化的黄酮醇类化合物,A、B环上都带有邻二酚羟基。

A new system of microscale inorganic chemical experiment s and its teaching effect

系统探讨碱土金属氢氧化物及其盐的溶解性、碱土金属元素的焰色反应、碱土金属离子的分离和鉴定等微型化实验,并将其设计成新的微型实验应用于无机化学实验教学,效果良

It is suggested that the intermolecular hydrogen bonding is responsiblefor the conformation change of PS-C.

我们认为羧化PS主链构象的改变是由于分子间氢键造成的。

The technique has isomerization of 1,2,4-trimethylbenzen and precise distillation as a union, which is unique and feasible.

该工艺采用偏三甲苯非临氢催化异构化技术与精密精馏的分离手段有机结合的方法,工艺独特可行。

Nitrogen was used as carrier gas and the area normalization method was applied to calculate the content of the crude lactide.

采用TP-5毛细管柱,以氢火焰离子化检测器检测,N2为载气,以校正面积归一化法计算粗品丙交酯中各组分的含量。

According to the VESs analysis, the intrinsic brittleness of Fe〓Al is due to less lattice electrons, bondcomplex distribution heterogeneity, hydrogen-induced embrittlement, and the difficulty in recovery of the lattice symmetry, while various alloying elements have strengthening and toughening effects through altering the VES parameters.

运用固体与分子经验电子理论建立起Fe〓Al合金各相的价电子结构,在计算中,首次尝试利用TFD模型确定Fe〓Al的原子杂阶,针对不完全有序的B2-Fe〓Al提出"局部平均原子模型",对Fe〓Al的室温脆性从电子理论上进行了系统的阐述,认为较少的晶格电子、键络分布不均匀、氢致脆性和难以恢复晶体的对称性使Fe〓Al具有本质脆性,合金化元素可以在一定程度上改变价电子结构参数而改善强度和韧性。

The method is right tall lipemia group (81) contrast with normal blood fat group (65), with analysis of appearance of gas phase color atlas all sorts of armour ester change the content of fatty acid of plaque phosphatide film, determine with standard method the thrombosis in blood endangers factor, serum is the same as model half Guang ammonia is acerbity and element of 11- dehydrogenation thrombus B2(TXB2), analyse the dependency between both with multivariate and linear regression.

方法对高脂血症组(81例)和正常血脂对照组(65例),用气相色谱仪分析各种甲酯化血小板磷脂膜脂肪酸的含量,用标准方法测定血液中血栓形成危害因子,血清同型半胱氨酸及11-脱氢血栓素B2(TXB2),并用多元线性回归分析二者之间的相关性。

The radiated samples of yeast mannan and their control were measured by FT-IR, Vis-UV and scanning electron microscope, then they were observed and analyzed, and compared with the above two data.

它们既是糖分子内、分子间形成氢键和糖苷键的结构基础部件,又是甘露聚糖糖基化其他生物大分子进而影响它们在生物信息流中作用的重要结构部件。

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这一模式非常关注商人的网络信用基础。

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