Abstract:报道了一种以芳基卟吩和铁盐为原料大批量合成μ-氧代双铁卟啉的一步合成新方法,并以对氯四苯基卟吩Tp-ClPPH2和FeCl2·4H2O合成μ-氧代对氯四苯基双铁卟啉(Tp-ClPPFe)2O为例,采用均匀设计并结合偏最小二乘方法优化了(Tp-ClPPFe)2O的合成条件.当DMF为35 mL,FeCl2·4H2O用量为0.3 g,加入FeCl2·4H2O后反应20 min,NaOH用量为0.35 g,加入NaOH后反应30 min,可获得94.08%的(Tp-ClPPFe)2O.偏最小二乘回归结果表明,在考察范围内,反应条件对反应影响的大小为FeCl2·4H2O用量＞加入FeCl2·4H2O反应时间＞NaOH用量＞加入NaOH后反应时间＞Tp-ClPPH2浓度.

Abstract:用循环伏安法对NiSO4 与PdCl2 混合溶液合成钯镍合金纳米线的电化学沉积条件进行了研究 .结果表明 ,钯镍离子混合液中钯的析出对镍、氢的电极过程有很强的去极化作用 ,使镍的析出电势正移 ,减小了钯、镍析出电势的差距 .钯离子浓度为 2mmol·L- 1,镍离子浓度为 0 .32mol·L- 1时 ,有利于形成钯镍合金 .高超电势和大电流密度下可以实现钯、镍共沉积 .但高浓度和高超电势下 ,电沉积的电流密度大 ,使金属的沉积速度过快 ,不利于形成钯镍合金纳米线 .钯镍析出电势相差较大 ,在低超电势条件下 ,难于实现共沉积 ,需通过加入添加剂或络合剂等其它方法来改变钯、镍的析出电势 ,使二者析出电势更进一步接近以达到共沉积的目的 .

Abstract:Ring-opening of cyclic glycerothiophospholipid-Tegefur conjugated by triethylamine produces the title compounds. This paper studies the compound anti-tumor activity against urianyl bladder cancer and toxicity activity against embargo cell of human being a

Abstract:以烯丙基氯作烷基化试剂，在常压、不加催化剂的情况下合成了二乙基烯丙基胺，并对原料配比、水浴温度、加料方式与时间、以及沸腾反应时间对产率的影响进行了研究。结果表明，在烯丙基氯与二乙胺摩尔比为1．1：1、总加料时间2h及沸腾反应1h时，二乙基烯丙基胺的产率可达78％。

Abstract:This study, by testing the zata potentials of acqueous silica nanoparticles and the composite system of silica nanoparticles and acrylate emulsion respectively, formed the optimal condition of adding silica nanoparticles into acrylate emulsion system. The

Abstract:开发了一种新型热塑 热固性粘结剂RG1 2 ,该粘结剂可直接应用于热塑性注射机 ,喂料的低温流变性能好 ,粉末临界装载量达到 5 9% .注射生坯强度和固化后成形坯强度分别达到 5 .8MPa和 17.6MPa .采用该粘结剂及相应的注射成形工艺制备的YG8,YT5硬质合金强度分别达到 2 4 80MPa和 2 10 0MPa ,硬度分别达到HRA89.7和HRA90 .4 ,制品最小尺寸偏差达到± 0 .0 2mm ,尺寸精度及保形性优于传统蜡基粘结剂 .

Abstract:This paper presents a new fluorescence oxygen sensor with Pt-T(p-Br)PP as its sensing material and PVC polymer as its support system. When the maximal activated wavelength of the sensitivity film of this sensor is 402 nm and the maximal emitting wavelengt

Abstract:以籼稻、粳稻两种类型的成熟种子为外植体研究了不同浓度的AgNO3在水稻农杆菌转化中的作用。结果表明，在农杆菌转化前添加AgNO3可以提高愈伤组织诱导率，最适浓度为8～10mg／L，但对愈伤组织的分化没有明显促进作用；转化后添加低浓度的AgNO3可以减轻愈伤组织的褐化，提高抗性愈伤率和绿苗分化率，最适浓度为2-8mg／L。同时发现，无论是转化前还是转化后，添加高浓度的AgNO3对水稻愈伤组织的分化均具有毒害作用。

Abstract:Through experiments, we studied the biological sand filter ripening process and the manganese removal of the Dongting lake groundwater, and investigated the relations among the pH value, oxidation-reduction potential (ORP), ferrous ions and biological ma

Abstract:从流体力学实验角度 ,研究了不同液气比情况下的旋流板阻力特性 .由试验结果 ,分析了旋流塔板压降与其结构、液气比、气体密度和气体塔板穿透速度等影响因子的无因子量化关系 ,利用回归分析手段 ,推导出了主要参数对旋流板阻力的回归并联式 ,提出了一个新的多参数旋流板阻力公式 .并将此公式与传统的旋流板阻力公式进行了比较 .发现 :传统的旋流板阻力公式只有穿孔动能因子F0 在 11kg0 .5/m0 .5·s左右时 ,计算误差较小 ,否则 ,计算误差非常大 .新的旋流板阻力计算公式适用范围广 ,不同液气比 ,不同穿孔动能因子情况下的计算误差在 10 %以内 .

Abstract:The mirror phenomenon of two-dimensional steady river water quality model was studied with the computer simulation of river pollution straps. The pollution straps of one-side mirror model and two-side mirror model were simulated and compared by using the

Abstract:LS-DYNA, a finite element (FE) analysis software were used to build the FE model of w-beam guardrail whose posts were columniform. The materials of beam and post were both steel, bolts were used to connect beams and posts. Based on the model, two factors,

Abstract:针对土工实验中标准击实试验数据处理存在的问题，提出了利用最小二乘法进行高次多项式插值的一般准则：若残差χ^2值最小及χ^2分布的累积概率较小，则通过其选取的多项式阶数是适宜的,用MATLAB实现之，简单易行，从而为求解岩土的最大干密度和最佳含水量提供了理论依据，它可望在土工试验数据处理中得到推广和应用。

Abstract:Guided by the theory of CIM, we designed an integrated plant maintenance and management system, which could overcome the deficiency of the decentralization and the lack of process and resource optimization in the traditional plant maintenance and manageme

Abstract:The difficulty of truing and dressing of superabrasive grinding wheels is the key problem to restrain their application. Turing and dressing of superabrasive grinding wheels by acoustic-optic Q-switched YAG pulsed laser in wheels radial orientation are st

Abstract:针对某省2002年实际背景电网，提出了在合理配置无功功率补偿容量前提下，基于变比及补偿容量调节对母线电压变化灵敏度的大小安排变比和补偿容量调整顺序和调整量的电压／无功控制策略、仿真分析表明，基于该策略制定的调整方案电压调整范围大，调压效果显著；满足同样调压要求所需的变比和补偿设备调整次数少、调整量小，不仅能提高电压合格率和系统电压稳定性，而且能显著降低系统网损，提高运行经济性、本文所提出的电压／无功控制策略，对于合理解决现代复杂电网的电压一无功综合协调控制具有较大的理论及实际意义，对于制定电力系统自动电压控制(AVC)方案具有普遍借鉴意义。

Abstract:Based on neural-network, this paper describes a new adaptive scheme for linear-phase finite-impulse response (FIR) digital filters. According to the amplitude-frequency response characteristic of type-4 FIR filter, the paper presents a corresponding neura

Abstract:The electromagnetic transient process was analyzed and studied for single phase grounding fault in small current grounding systems. The study focused on the distribution characteristics of the currents in the capacitor and inductor when the neutral point

Abstract:A new kind of steel-concrete composite slab is proposed. Forty-three specimens of this kind of slab with different parameters have been studied. Their behaviors during construction and use are analyzed, including the load-defection relationship, the strai

Abstract:After analyzing the effect of grip manner on the stress distribution in tensile specimen, a glued double-plated grip manner was adopted, and a new test method for evaluating the tensile strength of concrete in uniaxial direct tension was developed. A larg

Abstract:Through the discussion of the resistance properties of natural ventilation induced by wind force, a method of local pressure loss superposition was proposed to calculate the pressure loss. Airflow through buildings is composed of the sudden contraction se

Abstract:对冲击载荷作用下复合材料梁-板脱层前后的非线性动力学响应进行了分析，基于四分区梁板脱层模型，利用Galerkin法和Wilson-θ法对梁板在脱层前后的非线性动力响应进行了求解．分析表明在冲击荷载作用下产生突然脱层的梁扳，其在脱层前后的动力学性态有明显变化：脱层后系统的频率比脱层前系统频率低；系统的各种动力响应量(位移、速度、加速度)均增大，而且这种变化在脱层的区域比在未脱层的区域显著。最后，将有限元方法和本文的方法进行了对比，结果表明二者相当吻合。

Abstract:We applied the Element-Free Galerkin Method (EFGM) to solve the incompressible Navier-Stokes equation. The discrete formulation of Element-Free Galerkin was obtained by the weighted residual method, and the fraction step method in time domain was adopted

Abstract:The elastic wave transmission of two different homogeneous materials in a continuous transitional inhomogeneous zone was studied. The general equations of the elastic wave transmission in inhomogeneous zone were established. Based on delay-time transforma

Abstract:The frequency band gaps of one-dimensional comb-like waveguide photonic crystals were investigated. This kind of photonic crystal was formed by periodically grafting branches along an infinite monomode waveguide. The dispersion relation was obtained in a

Abstract:This paper defines a new type of matrix, i.e. anti-symmetric orthogonal anti-symmetric matrix, and studies the existence of the solution of this matrix and its optimal approximation in a typical kind of linear matrix equation.By applying the generalized s

Abstract:This paper proposes a new definition of exceptional family for variational inequality for the study of the existence problem of variational inequality, and has proved that the variational inequality has at least one solution, or there exists an exceptiona