Cr3+-H3PO4光度法测定磷酸体系中的Cr3+

Cr3 与H3PO4生成绿色配合物,其最大吸收峰在660nm,摩尔吸光系数为1.4×102L·mol-1·cm-1,Cr3 在0～0.5mg/30ml范围内符合比尔定律,用加入法直接测定磷酸体系中的Cr3 ,结果满意。     

Administración del riesgo crediticio al menudeo en México: una mejora econométrica en la selección de variables y cambios en sus características

The early prediction of bad debtors in revolving loans in Mexico is a relevant current issue. The proposed econometric model of behavioral scoring considers the changes in the characteristics of consolidated clients and produces better results than those obtained with methodology used by the CNBV on provisions. The obtained results show the possibility of replacing the current model, minimizing the expected loss and increasing the ROA of Mexican financial institutions in 2.20% complying the methodology and statistical testing criteria according to the Unique Banking Dispositions and the guidelines of Basel II on credit risk.     

Role of banks in financial inclusion in India

Financial inclusion is emerging as a new paradigm of economic growth that plays major role in driving away the poverty from the country. It refers to delivery of banking services to masses including privileged and disadvantaged people at an affordable terms and conditions. Financial inclusion is important priority of the country in terms of economic growth and advanceness of society. It enables to reduce the gap between rich and poor population. In the current scenario financial institutions are the robust pillars of progress, economic growth and development of the economy. The present study aims to examine the impact of financial inclusion on growth of the economy over a period of seven years. Secondary data is used which has been analyzed by multiple regression model as a main statistical tool. Results of the study found positive and significant impact of number of bank branch and Credit deposit ratio on GDP of the country, whereas an insignificant impact has been observed in case of ATMs growth on Indian GDP.     

不锈钢供水管道中铬元素迁移及防控技术

选择国内企业生产的不锈钢供水管道,用余氯和硬度分别为2、100 mg/L的浸泡液浸泡24 h,并检测水质中六价铬的变化。结果显示,浸泡液中的六价铬变化与不锈钢供水管道的工艺有很大关系,焊缝处理、打磨抛光、酸洗钝化三个条件都对六价铬的迁移有很大影响。     

明代地方官府赋役核算体系的早期发展

明洪武到弘治年间,州县官府的赋役管理从基本不依赖核算向需要且能够进行核算的状态转变。洪武、永乐时期,在官府体系内部,只有田赋被部分地纳入核算管理,其他赋役征发则完全或绝大部分无法计量,也没有计划性。宣德以降,地方官员吸收民间粮里阶层分担赋役负担的经验,在此基础上进行旨在“均平”的改革,以确保赋役的可持续征发。在探索均平之道的过程中,不同地方官员多采取量化赋役负担、预定征收计划、将派征对象标准化并进行摊派核算的方式。其中,田赋额等开始扮演摊派对象的角色。这开启了州县层面赋役征收核算体系的发展之路,也导致府、州、县与户、工等部及布政使司之间产生了赋役核算信息不对称,出现了二重会计结构。     

电感耦合等离子体-原子发射光谱法测定龟苓膏中镉、铬和锌的含量

龟苓膏试样经干法灰化后,采用电感耦合等离子体-原子发射光谱法(ICP-OES)测定其中的镉、铬和锌的含量。方法的加标回收率在93.9%~105.1%,相对标准偏差在0.85%~3.03%,具有良好的准确度和精密度。因此,该方法可用于龟苓膏中重金属含量检测和控制。     

蔗渣改性吸附剂对Cr(Ⅵ)的吸附研究

采用蔗渣纤维素改性吸附剂对Cr(Ⅵ)进行吸附处理,研究了吸附剂用量、吸附时间、pH值和吸附温度对吸附效果的影响。结果表明,最佳的吸附条件为吸附剂用量0.3g、pH值1、吸附温度30℃、时间2h,相应的吸附容量和吸附率分别为1.7mg/g和99.8%。在单因素实验的基础上进行正交实验,由数据分析得到影响蔗渣改性吸附剂对Cr(Ⅵ)吸附效果的因素主次顺序为:pH吸附时间吸附温度吸附剂用量。对吸附剂进行解吸再生实验,结果表明,蔗渣改性吸附剂具有较好的重复使用性及稳定性。     

白灵菇产业发展现状、问题及对策

白灵菇是我国具有自主知识产权和明确原产地的品种,以独特的风味、细嫩的质感、丰富的营养以及保健功能受到大众喜爱,栽培规模越来越大。该文对白灵菇产业发展现状、市场前景和存在的问题进行了阐述和分析,并提出了白灵菇产业持续、健康、快速发展的对策。     

Financial and economic performance of major Brazilian credit cooperatives

The credit union's main functions are the provision of individual financial loans based on collective savings, reaching up to provide full banking services, with expansion of its social function. Cooperatives are an alternative to supply a credit demand in the market, because a third of the municipalities have no bank branches. Although the participation of cooperatives in credit operations is still small compared to the Brazilian national banking system, its continued growth demonstrates the importance of this sector. In this sense, the analysis of the performance of these cooperatives becomes relevant to the extent that incentives to industry expansion differ from other financial institutions. In this context, this study aimed to analyze which the financial and economic performance of Brazil's largest credit unions. This performance analysis was performed using the indicators proposed by the CAMEL model, then the data envelopment analysis (DEA). It can be seen that there is a positive relationship between the use of variables in the model and the measurement of financial performance of credit unions. Moreover, according to the results, it can be observed that Uniprime Northern Paraná, Sicoob Cocred and Sicredi North RS/SC were cooperatives that stood out as efficient.     

法国高等教育和科研部推出科研新政

2013年,法国新政府在教育和科研领域将逐步推进各项改革,其教研部拟推进的主要措施有：取消“盖昂通函”,推行决策会商工作机制,实施超级联合大学计划,颁布新高等教育和科研法,确定未来科研优先领域,强化对欧盟科研影响力和加强科研人才队伍建设等。法国政府希望通过采取以上措施,继续保持法国的世界科技强国地位和优势。