二氧化氯制备方法及相关产品在我国的研究进展

<正>一、二氧化氯制备方法的研究我国应用还原法制备二氧化氯方法的现状:用氯酸钠作原料的还原法制备二氧化氯的方法,因还原剂不同而有很多种方法,但在我国工业上真正应用较多的有以SO2为还原剂的R1法,以盐酸为还原剂的R2和R5法及以甲醇为还原剂的R8法和以过氧化氢为还原剂     

化学法二氧化氯发生器转化率测定方法的研究

为衡量化学法二氧化氯发生器运行费用,分析发生器产物的成分、计算产率、二氧化氯转化率等性能指标,本文设计研究了化学法二氧化氯发生器的二氧化氯转化率、氯酸钠耗率等的测定方法.采取恒定进口原料溶液的流量,时监测出口吸收水溶液流量和取样分析各组分浓度,以抵消原料在反应器停留时间的影响,对商品化学法复合型二氧化氯发生器在应用现场进行了实际测定.结果显示出口溶液流量波动也会影响个别结果.选择的两个分析方法测定有效氯结果无显著性差异.整体试验结果在可接受范围     

一元固体二氧化氯泡腾片的工艺研究

本文对几种一元固体二氧化氯的片剂配方进行了研究,通过稳定性实验优选出较稳定的五种配方,对这五种配方压片后形成泡腾片.通过对泡腾片的质量检测得出配方五和六是较理想的一元固体二氧化氯泡腾片配方.     

二氧化氯处理含氰废水的研究

二氧化氯的反应活性是氯的2.6倍,与水中的有机物反应以氧化还原反应为主,在废水处理中取得了较好的效果,本文讨论了二氧化氯破氰的机理,并通过试验法研究了二氧化氯处理咖啡因生产过程中含氰废水影响因素。     

整体固相萃取材料的制备及应用研究

本文采用异丁烯酸甲酯作为整体柱单体,乙二醇二甲基丙烯酸甲酯作为交联剂,异丙醇和1,4-丁二醇混合作为致孔剂,偶氮二异丁腈作为引发剂制备新型有机整体固相萃取材料,探究了各组成分对整体固相萃取效果的影响,以期为日后新技术在我国发展食品检测、药物分析等领域应用提供帮助.     

聚乙烯醇骨架型水凝胶的制备方法以及产品

本发明是一种聚乙烯醇骨架型水凝胶的制备方法以及产品，该方法是将一定浓度的聚乙烯醇水溶液与或不与适当的增稠剂、增塑剂、填充剂混合后浇铸于适宜的模型中，在低温下胶凝反应而形成富有弹性的水凝胶。用该方法制作的产品成型及脱膜性能好，柔软、无毒、无刺激、无致敏反应；产品可重新胶凝成型，凝胶中含有药品，从而为贴膏剂、皮肤含水膜剂提供了一种新基质。     

立方晶型三氧化二锑的制备及其对软质PVC阻燃性能的研究

研究了超细立方品锑白的制备方法,采用TEM（透射电镜）、XRD（X射线衍射）等测试手段对产物的晶型进行了鉴定,并将其应用到软质PVC（聚氯乙烯）体系中测定其对体系阻燃性能和机械力学性能的影响。实验结果表明,制备的三氧化二锑属于立方晶型,粒径大约200nm;添加到软质PVC中,可以大幅度提高体系的阻燃性能。     

盐酸丁卡因凝胶剂的工艺制备及质量管理

目的:探讨盐酸丁卡因凝胶剂的工艺制备方法及质量管理.方法:以卡波姆941、氢氧化钠、甘油为辅料制备盐酸丁卡因凝胶,并采用紫外分光光度法进行盐酸丁卡因含量的测定.结果:盐酸丁卡因检测浓度在2.009～20.091g·ml范围内具有良好的线性关系;样品溶液在8h内稳定;计算含量及其回收率,得回收率为100.57%,RSD为0.41%(n=7);微生物限度检查合格,涂展性良好.经离心试验(300r/min)无分层现象.结论:盐酸丁卡因凝胶剂工艺制备简单、稳定,质量可控.     

半速率的建模研究

提出了一种基于二维马氏链的半速率话务模型,从理论上分析并计算了不同话务量时的阻塞概率、半速率承载话务比例及半速率的最佳开启门限.分析表明,随着半速率开启门限和话务量的增大,半速率信道承载话务量比例也将相应增加,从而会影响系统服务质量.文中提出的业务模型和分析方法为实际系统动态调整半速率开启门限提供了理论指导,所得到的不同载波数下、对应不同开启门限的最优话务量范围计算结果也可直接用于实际系统配置.     

Terms of trade and exchange rate regimes in developing countries

Since Friedman [Essays in Positive Economics, University of Chicago Press, Chicago (1953) 157-203] an advantage often attributed to flexible exchange rate regimes over fixed regimes is their ability to insulate more effectively the economy against real shocks. I use a post-Bretton Woods sample (1973-96) of 75 developing countries to assess whether the responses of real GDP, real exchange rates, and prices to terms-of-trade shocks differ systematically across exchange rate regimes. I find that responses are significantly different across regimes in a way that supports Friedman’s hypothesis. The paper also examines the importance of terms-of-trade shocks in explaining the overall variance of output and prices in developing countries.     

我国货币中性的实证研究

国际金融危机爆发以来,降低利率、增加流通中货币成了各国政府解决金融危机的共同做法,货币对于经济的积极作用再次引起人们的关注。过于宽松的货币政策能持续多久,会不会造成严重的通货膨胀,进而破坏经济的健康发展,也同样引起人们的关注。本文对我国1978-2009年的流通中货币、利率、物价指数对GDP的影响进行了实证研究,结果表明流通中货币不是实际GDP增长的格兰杰原因,货币是中性的;GDP的实际增长率是实际利率的格兰杰原因,名义利率和GDP没有因果关系;GDP和物价指数没有格兰杰因果关系,通货膨胀不能促进经济的增长。     

我国生产率测算与经济潜在增长率预测研究

生产率是影响一国参与全球竞争的关键要素。本文基于全周期和子周期两种视角,利用C-D生产函数对我国生产率进行测算并预测了未来的经济潜在增长率,研究结果显示:21世纪以来,我国全要素生产率呈现下降趋势,但对经济的贡献率仍处于较高水平,经济呈现科技与资本双轮驱动特征;未来我国将跨越上中等收入阶段,步入高收入国家行列;预测结果显示:2036-2050年间我国经济增长主要靠全要素生产率拉动,经济增长动力的有效转换,将更加接近党的十九大提出的"两阶段"战略目标,更加适应新时代下的高质量发展需求。     

房地产税立法中的税基与税率选择研究

在我国推进全面税收改革的新阶段,房地产税立法势在必行。通过介绍当前我国房地产税的税基和税率现状,分析了当前我国房地产税税基和税率存在的问题,结合沪渝房产税改革试点情况和发达国家实践经验提出相关建议。     

The rate of seat belt use and its related factors among car drivers in Tehran,Iran after imposing new regulations

The incidence of road crash deaths is high in Iran. Seat belts can reduce the risk of death or serious injury. This study aimed to estimate the rate of seat belt use and its related factors for car drivers in Tehran, Iran after proclamation of the 2011 legislation. A roadside observational study was conducted in 2012 and 10,752 cars and taxis commuting in different streets of Tehran were screened in regard to drivers' seat belt wearing. Other variables including gender, age range, type of street, district, time of day and day of week were also collected. The rate of seat belt use was 70.9%, and was significantly higher in females, elders and on freeways and significantly less in afternoon hours, side streets and in taxi drivers. The rate of seat belt use in Tehran (a representative of Iran) is still low despite the implementation of new legislations. More initiatives are needed to increase this rate especially in certain groups and areas.     

Exchange rate versus inflation targeting: a theory of output fluctuations in traded and non-traded sectors

This paper develops a basic model for output fluctuations in traded and non-traded sectors under two alternative monetary policy regimes; exchange rate targeting (or monetary union) and inflation targeting. The conventional wisdom from one-sector models says that inflation targeting gives better output stabilization than exchange rate targeting when demand shocks occur, but the opposite when supply shocks occur. In a model with a traded and a non-traded sector, we show that the conventional wisdom holds for the non-traded sector. However, for the traded sector, we show that inflation targeting destabilizes output compared with exchange rate targeting when both supply and demand shocks occur. The only shocks where inflation targeting provides the better output stability for the traded sector are shocks to world market prices. The two-sector structure introduces new mechanisms that may turn around earlier results for aggregate production. For instance, a demand shock may induce higher aggregate output fluctuations with inflation targeting than with exchange rate targeting. Furthermore, a positive demand shock may prove to be contractionary under inflation targeting.     

对内蒙古农村劳动力转移影响因素的实证分析

随着劳动力逐渐被解放,农村剩余劳动力所面临的问题得以显现。本文针对此问题,对内蒙古农村剩余劳动力转移的影响因素加以分析,从而提出相关的政策意见。影响农村剩余劳动力转移的影响因素有很多,本文主要选取了城乡居民收入差距、城镇人口占总人口比重、第二产业占GDP的比重、城镇登记失业率四个指标作为影响农村剩余劳动力转移的主要影响因素,进而建立多元线性回归模型进行实证分析,最后针对农村剩余劳动力转移问题,提出了相关政策和意见。     

The impact of parallel market exchange rate volatility and oil exports on real GDP in Syria: Evidence from the ARDL approach

This paper investigates the impact of parallel market exchange rate volatility and trade on real GDP and real GDP growth in the Syrian economy over the period of 1990Q1–2010Q4. To this end, we first construct a parallel market exchange rate volatility indicator. Second, we estimate an autoregressive distributed lag (ARDL) model where we include our indicator of volatility among the main determinants of real GDP. Our findings imply that real GDP can be explained by three main variables: parallel market exchange rate, money supply, and oil exports. The long-run equilibrium reveals that parallel market exchange rate volatility has a negative impact on real GDP compared to the positive impact of money supply and oil exports. In contrast, the short-run impact of parallel market exchange rate volatility on real GDP growth is positive and very small counter to the long-run impact. Furthermore, the coefficient of the error correction term of the estimated ARDL model indicates that real GDP deviation from the equilibrium level will be corrected by about 10% after each quarter.     

高校中层干部教育培训质量评价研究

为了进一步解决目前高校中层干部教育培训考核评价中存在的问题,根据我国高校中层干部教育培训的客观实际,运用PDCA理论,从教育培训的策划、实施、检查和改进四个方面建立一套完善的考核评价指标体系,并针对高校中层干部教育培训组织情况的复杂性和模糊性,运用层次分析法确定了指标权重,采用模糊综合评价法进行实证评价。对中国民航大学中层干部教育培训实际情况进行实证分析的研究结果表明,按照对高校中层干部教育培训情况的影响程度,排在前七位的影响因素依次为培训课程开发、培训的内容、需求调查、老师讲课效果、培训课程的安排、培训的改进、培训的总结;中国民航大学中层干部教育培训整体情况处于一般和较好之间。这与实际情况基本符合。