我国能源建设新构想

能源危机以及由于大量燃烧碳及烃类引起的环境问题,正在对现代社会构成越来越大的威胁。本文根据我国的资源实际,提出了发展液氨(LSA)燃料的设想,并与烃燃料和氢能源进行了比较。同时,对发展LSA燃料与推广洁净煤技术的结合进行了探讨。     

太阳能光电化学电池分解水制氢技术及其研究发展

主要介绍了太阳能光电化学电池分解水制氢技术的基本原理以及发展历史和研宄现状，并在此基础上分析了影响该技术发展的一些因素，包括迭层电池的各结之间的能带匹配、催化电极的制备、电阻的减小以及电池的结构等一系列问题。     

三硫化二砷溶解性的探讨

通过实验讨论三硫化二砷在无氧化性强酸、强碱溶液中的溶解性。提出三硫化二砷由于存在水解平衡导致难溶于无氧化性强酸而易溶于强碱溶液中。     

H_2O_2-抗坏血酸均相催化氧化法处理甲基橙

采用一种新的均相催化氧化体系——H2O2-抗坏血酸体系处理高浓度甲基橙模拟偶氮染料废水。通过改变过氧化氢、抗坏血酸投加量及溶液pH值、反应温度、时间等影响因素的实验与分析,研究了该体系对甲基橙脱色率的影响,并初步探讨了氧化降解的机理。结果表明,该体系能有效地使高浓度(1900mg/L)甲基橙溶液脱色,脱色率大于98%。     

Hydrogen sulfide from a NaHS source attenuates dextran sulfate sodium (DSS)-induced inflammation via inhibiting nuclear factor-κB

This study investigated the alleviating effects of hydrogen sulfide (H₂S), derived from sodium hydrosulfide (NaHS), on inflammation induced by dextran sulfate sodium (DSS) in both in vivo and in vitro models. We found that NaHS injection markedly decreased rectal bleeding, diarrhea, and histological injury in DSS-challenged mice. NaHS (20 µmol/L) reversed DSS-induced inhibition in cell viability in Caco-2 cells and alleviated pro-inflammation cytokine expression in vivo and in vitro, indicating an anti-inflammatory function for H₂S. It was also found that H₂S may regulate cytokine expression by inhibiting the nuclear factor-κB (NF-κB) signaling pathway. In conclusion, our results demonstrated that H₂S alleviated DSS-induced inflammation in vivo and in vitro and that the signal mechanism might be associated with the NF-κB signaling pathway.     

催化氢波法测定美洛昔康

应用线性扫描极谱法和循环伏安法对美洛昔康的极谱行为进行了研究.在0.08mol·L-1HAc-NaAc(pH4.5)支持电解质中,美洛昔康于-1.20V(vs.SCE)处产生一灵敏的极谱催化氢波,其二阶导数峰峰电流与美洛昔康浓度在2.0×10-8～1.6×10-6mol·L-1范围内呈线性关系(r=0.9996,n=8),检测限为1.0×10-8mol·L-1.10次测定1.0×10-6mol·L-1美洛昔康峰电流相对标准偏差RSD为0.6%,回收率在92.6%～101.2%之间.该方法可用于药剂中美洛昔康的测定.本文对美洛昔康的反应机理进行了探讨.     

The Kinetics of Hydrogen Diffusion in Ti_3Al-Based Alloy

lIntroductionAIloysbasedOI1inter111etanicsTi3AlI1avebee11stndied..inconsiderabledetaiIinrecentvearsI"'1.Theyarelegiti111ateca11didaten1ateriajsforaerospaccsysten1s,suCI1asenginesa11dairti-al11esofahydrogen-burl1ingpropulsion'syste111.Tl1erefore,theinterac…     

经典一维非谐振子系统的热容量

讨论了非简谐振动对经典一维振子系统内能和热容量的影响，得到该影响的一级修正表达式．并以氢分子系统为例，利用Morse势能函数进行具体讨论．结果表明，对于一维非谐振子系统，在讨论系统的内能、熵、热容量等一些与温度有关的热力学性质的问题时，若涉及的温度较低，这时可近似地用简谐理论处理；若温度较高，则应考虑非简谐效应．     

Fe(Ⅲ)-H2O2-甲基紫体系催化褪色光度法测定痕量铁(Ⅲ)

研究了Fe(Ⅲ)在酸性介质中催化双氧水甲基紫体系的氧化褪色反应,提出一种测定痕量Fe(Ⅲ)的新方法,体系的最大吸收波长为566nm,Fe(Ⅲ)含量在4～12μg*ml-1符合朗伯-比耳定律,回归方程为ΔA=0.00775C+0.05,相关系数γ=0.9930,最低检出限为2.75×10-7g*ml-1,相对标准偏差为1.83%,结果令人满意.     

Synergetic effect of stannate with o-aminophenol on inhibiting H2 evolution of A1 anode in strong alkaline media

The performance of Al-alloy anode in 4 mol/L KOH with and without stannate and o-aminophenol at 25℃ and 55℃ was studied by hydrogen collection, potentiodynamic polarization and electrochemical impedance spectrum, o-aminophenol acts as a perfect inhibitor because of its adsorbability and forming chelate complex at its optimum concentration of 0.4 mol/L. Stannate enhances the inhibition of o-aminophenol and improves the activity of Al-alloy because of its reduction to tin. There is synergetic effect of stannate with o-aminophenol on the behavior of Al-alloy, and the inhibitive efficiency at 55℃ is better than that at 25 ℃.