A NEW FAST-GROWING RAW MATERIAL FOR PULP PAPERMAKING-GUANGYECHU

A new pulp papermaking raw material, Guangyechu,is introduced in this paper, including material characteristics and ultilization of bast, wood pole and leaf. The fiber morphological characteristics,chemical composition of wood pole and feasibility of pulping and papermaking by APMP process are studied in the laboratory. The results show that wood pole can be put to use in papermaking industry. The APMP pulp is produced using 5.2% sodium hydroxide and 5.0% hydrogen peroxide. The novel technology has offered breaking length of 4.74km,tearing index 3.08mN @m2 @g-1, brightness of 71.6%ISO, bursting index 2.07 KPa@m2@ g-1, opacity 84.5%and yield of 75.7%. As a pulp for newsprint, offset point paper and information paper, the Guangyechu APMP shows its advantages both quality and cost-efficienty. It is significative to apply the pole of Guangyechu, which is only firing at present to the paper industry.     

巩固和发展基础课教学实验室评估成果的探讨

本文结合实验室评估中的有关问题,探讨新办本科高师如何巩固和发展基础课教学实验室评估成果。     

PID控制参数的整定方法

在分析常用的ＰＩＤ（比例积分微分）控制器控制参数的整定方法（扩充临界比例度法、扩充响应曲线法、模型识别法）的同时，给出了其中几种方法的操作步骤。用微机对典型对象进行实验研究，通过改变被控对象的参数，分别研究了用上述三种方法整定控制器参数的适应能力。提出了用模型识别法确定控制器整定参数的规则，给出了识别系统特征参数的方法。实验结果表明，模型识别法参数调整方便，适应能力强，应用范围广，较其他方法控制效果优越。     

用工业钡盐下脚料生产“钡餐”新工艺

研究了应用废料生产“钡餐”,即胃肠道X光透视用造影剂——药用硫酸钡的新工艺。该法将工业氯化钡及氢氧化钡的下脚料用盐酸浸溶后,调整pH值以除砷、硫等杂质,控制反应温度、酸度等条件,最终获得合格产品。     

COMPARATIVE STUDY OF SELECTED BPR TOOLS

Modeling and simulation tools are essential to success of attempts at business process reengineering(BPR). This paper reviews the support tools used in earlier BPR practice and directs out the needs for more comprehensive and integrated tools. A conceptual framework to specify a BPR tool is proposed within which the key features are discussed. Five typical software packages are selected as samples to be tested and compared based on the framework. The result of this comparative review can serve as suggestion for purchasing a off-the-shelf product or requirement specification to develop a customized tool.     

由α—酸基—硫代半缩醛合成2—取代喹喔啉

利用Pummerer重排合成酰基—硫代半缩醛[RCOCH(OH)SCH_3],并将它们与邻苯二胺反应生成2—取代喹喔啉。     

浅谈企业如何确定应收帐款的信用期间

从当今赊销促销的经营方法中，简述企业应收帐款的作用和成本，并引伸出应收帐款信用期优劣取舍的计算公式，且通过一系列实例说明其运用方法。     

密封继电器内气样提取技术的研究

介绍了自制的气体取样技术，这项技术成功地解决了国内外存在的处于工作环境温度和动作过程中提取密封继电器罩内气样的技术难题．它不仅可靠地提取密封继电器的气样，而且还可对其它充气密封元器件的气样进行卓有成效的提取，也可对各种材料释放的气体进行取样，供高灵敏度的四极质谱计分析．从而为我国的密封元器件按ＧＪＢ５４８第１０１８条规定的实施检测创造了有利条件     

封闭疗法在骨科门诊的应用

根据医院骨科门诊及高校卫生所门诊，因腰腿痛、肩周疼痛、关节痛而来就诊的患者为数不少的特点，讨论骨科门诊的几种封闭治疗。