线材硫酸盐连续光亮镀锌添加剂的最佳配比及其电化学性能

线材硫酸盐连续镀锌工艺常用于钢丝、钢管等型材的防腐蚀处理,应用广泛,但其镀层晶粒粗糙,光亮度欠佳,存在易变色、耐蚀性能下降等缺点。通过赫尔槽试验,用正交法确定了硫酸盐镀锌液添加剂中主光亮剂苄叉丙酮、载体光亮剂、苯甲酸钠、辅助光亮剂A和扩散剂NNO的最佳配比以及最大影响因子,研究了各组分的电化学性能。结果表明:组合添加剂组成的最佳配比为2:22:8:1:6,对镀层影响最大的因子是主光亮剂+载体以及辅助光亮剂A的量,其他组分与主光亮剂、载体及辅助光亮剂A产生协同效应,也能有效地提高镀液和镀层的综合性能。优化该添加剂的复配对减低生产成本具有一定的指导作用

碱性介质中甲醇在铂电极表面吸附和氧化的电化学原位FTIR反射光谱和EQCM研究

运用电化学循环伏安、原位FTIR反射光谱和石英晶体微天平(EQCM)等方法研究了碱性介质中甲醇在Pt电极表面吸附和氧化行为.结果表明:甲醇电氧化与溶液酸碱性有密切的关系.酸性介质中甲醇在Pt电极上的CV曲线有两个正向氧化峰,而碱性介质中只有一个正向氧化峰,第二个氧化峰的消失可能是由于碱性介质中Pt电极在高电位下形成高氧化态的氧物种毒化其表面引起的.碱性介质中甲醇解离吸附产物的数量比酸性介质的明显减少,对甲醇氧化的第一个氧化峰表现出更高的电催化活性.目前实验条件下,原位FTIR反射光谱检测到:碱性介质中甲醇电氧化的最终产物是CO_2和CO_3~(2-),反应中间体主要为HCOO~-物种.从电极表面质量定量变化的角度提供了甲醇反应机理的新数据

Adsorption and reduction of palladium (Pd2+) by Bacillus licheniformis R08

Preliminary study on the mechanism of Pd2+ biosorption by resting cells of Bacillus licheniformis R08 biomass has been carried out by means of chemical kinetics and AAS, TEM, XRD and FTIR methods. The results showed that at 30degreesC and PH 3.5, when dry R08 biomass powder (800 mg/L) was mixed with Pd2+ (100 mg/L) for 45 min, the rate constant k of biosorption of Pd2+ attained a maximum of 5.97 x 10(-2) min(-1) and the half life period of the reaction reached 12 min. The part of Pd2+ adsorbed by R08 biomass was reduced to elemental, cell-bound Pd-0 at the same condition. The cell wall of R08 biomass was the primary location for accumulating Pd2+, and aldoses, i. e. hydrolysate of a part of polysaccharides on the peptidoglycan layer in the acidic medium, serving as the electron donor, in situ reduced the Pd2+ to Pd-0

碱性介质中正丁醇在铂电极上吸附和氧化的电化学原位FTIR反射光谱和EQCM研究

运用电化学循环伏安(CV)、原位FTIR反射光谱和电化学石英晶体微天平(EQCM)等方法研究了碱性介质中正丁醇在Pt电极表面吸附和氧化行为。结果表明:正丁醇电氧化过程与溶液酸碱性有着密切的关系。酸性介质中正丁醇在Pt电极上的CV曲线有2个正向氧化峰,而碱性介质中只有1个正向氧化峰,第2个氧化峰的消失可能是由于碱性介质中Pt电极表面钝化引起的。原位FTIR反射光谱检测到,在实验条件下,碱性介质中正丁醇电氧化过程的最终产物只有丁酸根。EQCM研究还从电极表面质量定量变化的角度提供了正丁醇反应机理的新数据

The adsorption and oxidation of isopropanol at platinum electrode in alkaline media

The adsorption and oxidation of isopropanol in alkaline media at platinum electrode have been investigated by using electrochemical quartz crystal microbalance (EQCM) and in situ FTIR spectroscopy. The results show that there is no self-poisoning in the electrooxidation of isopropanol in alkaline media. Though no poison species, such as CO, are evidenced by in situ FTIR spectroscopy, the adsorption of isopropanol or its dissociative products on Pt surface is suggested by EQCM data. The final product of isopropanol oxidation is only acetone under experimental condition, which suggests that the oxidation of isopropanol into acetone takes place via dehydrogenation step. The EQCM studies provide quantitative results of surface mass variation and have thrown new light in the elucidating isopropanol oxidation

The Role Orientation and System Configuration of the Chief Prosecutor in Mainland China Comparing with Taiwan Region

施建清，福建省平潭综合实验区人民检察院党组副书记； 周孙章，福建省平潭综合实验区人民检察院检察官，首批全国检察机关检察调研骨干人才，两岸检察制度研究中心核心研究团队首批成员，厦门大学法学院2015级在职法律硕士研究生。【中文摘要】主任检察官办案责任制作为祖国大陆新一轮检察改革之核心备受关注，而台湾地区主任检察官制度已然颇为完备。通观两岸制度运作，祖国大陆试点意在建设新型办案组织，完成办案组织从人民检察院向检察官主体的历史过渡；台湾地区则意在建立检察长与众多检察官之间的管理环节，更多倾向构架业务管理部门而非办案组织。祖国大陆现今试点多少借鉴台湾地区制度运作，却也面临着认识和操作的现实困惑，尚需过渡阶段完成试点思考与完善。基于此，祖国大陆主任检察官制度之发展应区分过渡时期，明确自身角色定位进行相应设计，并行立法努力奠定制度根基。 【Abstract】Chief prosecutor handling the responsibility system as the core of a new round of reform in the Mainland China of concern, and Taiwan region, director of the prosecutor system is already quite complete. Compare the operation of the system between Taiwan region and Mainland China, the Mainland China pilot aimed at building new handling organization, complete handling organization transition from the history of the people's procuratorate to the main body of public procurators; Taiwan Area is intended to establish management link between attorney and many prosecutors, more tend to frame the business management department, rather than the organization handling the case. Nowadays, the pilot in Mainland China is faced with the reality of the operation of the system in Taiwan Area, but it also faces the reality of understanding and operation. Based on this, the development of the system of the chief prosecutor in the Mainland China should distinguish the transition period, make the corresponding design of the role orientation, and lay the foundation of the system

运用CVM评估濒危物种保护的经济价值及其可靠性分析——以哈尔滨市区居民对东北虎保护的支付意愿为例

利用当前国际上流行的评估资源经济价值的重要方法——条件价值评估法(CVM),支付卡式、二分式问卷各设计了340份,调查了哈尔滨市区居民对东北虎保护的支付意愿。结果表明,支付卡式问卷调查分析得到居民的平均支付意愿为7.38元/(户.月),二分式问卷调查结果为9.27元/(户.月),由支付卡式问卷调查分析得到哈尔滨市区居民20年内的总支愿意为是10.76×108元,二分式问卷调查结果为23.03×108元。支付卡式问卷的支付意愿与参与调查者的相关社会经济因素的相关性分析显示,文化程度、户月均收入、对东北虎的了解程度与居民的支付意愿呈正相关关系,年龄与居民的支付意愿呈负相关关系。二分式问卷支付意愿的主导因子是月收入。与3个月前的调查结果比较显示,前后两次调查结果无显著差异,支付卡式问卷前后两次调查支付意愿差值为1.61元/(户.月),二分式问卷前后两次调查支付意愿值的差异为0.56元/(户.月）

阵列光纤光栅频谱合束技术研究

文章提出一种新型的基于阵列光纤光栅（AFG）的频谱合束结构,该结构的优点是输出光斑具有较好的单模特性,且系统的可靠性和可扩展性较强。应用高斯模场近似的方法,对这种结构的性能做了仿真分析,仿真结果表明,这种结构的衍射效率高,输出光斑尺寸小,单模特性好