中小电镀企业如何摆脱困境

中小企业要在激烈的市场竞争中生存与发展,可靠的产品质量与人性化的管理是关键。结合笔者在小型电镀厂从事技术与管理工作的经验,论述了"以质量求生存,以质量求发展"的理念。强调对农民工的技能培训、严格而人性化的管理,是企业获取高品质产品及发展壮大的首要条件。     

浅谈如何进行发酵罐的设计

本文简述了发酵罐的作用、组成、特点、工作要求、设计依据、设计要求、设计步骤及具体的设计内容。     

探讨让PVC中小树脂厂走出困境的途径

介绍了笔者研制出的性价比较高的神奇纳米碳酸钙、低铅稳定剂和改性钛白粉,以这3种加工助剂为基础投建加工助剂厂,并与树脂厂、加工厂合办,其PVC-U制品的原料成本比单办加工厂的原料成本降低800～850元/t。     

施工企业如何实施成本管理

主要介绍了施工企业成本管理存在问题以及如何进行工程项目成本管理赢取最大经济效益的一些方法。     

如何在高职英语教学中开展创新教育

英语教学质量直接关系到学生的职业能力和就业竞争力的提高,将创新教育融入高职院校英语教学势在必行.本文就如何在英语教学中开展创新教育这一问题进行论述,并探讨了创新教育对英语教师业务素质的要求.     

如何在我国商业银行中有效实施CRM的研究

实施切实有效的客户关系管理(CRM)是增强我国商业银行市场竞争力,应对国内和国际银行业激烈竞争的必然选择。本文着重阐述了我国商业银行实施CRM的必要性和我国商业银行实施CRM存在的一些问题,提出了成功实施CRM的对策建议。     

乙炔清净废水除磷技术的研究

在常温条件下,以次氯酸钠为氧化剂对乙炔清净废水进行氧化处理并以人工配置的石灰浆为反应介质。研究了对应处理效果的最佳pH值、氧化时间、有效氯含量和中和pH值等工艺条件,并在此基础上提出了清净废水总磷的治理工艺,分析了治理成本。     

硫酸装置尾气冒烟原因排查经验点滴

根据实际经验并结合具体案例,介绍对硫酸装置尾气冒烟原因的排查方法。强调首先应对产生冒烟的相关因素有较为清晰的认识,其次排查过程要仔细。对吸收操作温度、酸浓度和喷淋量等工艺操作参数对尾气冒烟的影响提出看法。     

Studies on the preparation and properties of conductive polymers. III. Metallized polymer films by retroplating out

A novel method to prepare polymer metallized films was found by using polymer metal chelate films treated with wetted metal plates (or metal powders). The polymer metal chelate films were prepared by metal salts mixed with the polymers containing a functional group, such as poly(vinyl alcohol) (PVA), polyamide, polyacrylamide (PAAm), and polyurethane (PU). This novel method is called the retroplating-out method. Polymer metallized films exhibited low surface resistivity around 10^?1 Ω/cm² by using this novel method. The surfaces of these films were shown to be metallized by means of X-ray analysis. The conduction mechanism was verified reasonably well by using scanning electron microscope (SEM) and UV-visible absorption data.     

Studies on the preparation and properties of conductive polymers. XI. Metallized polymer films by plating out

Metallized films were prepared from the plating‐out method. Various metal powders with lower reduction potential were dispersed in poly(vinyl alcohol) (PVA) aqueous solution dried to form a film, then treated with metal salt solutions having metal ions in the metal salt with higher reduction potential. Metallized PVA films exhibited low surface resistivity around 10⁰–10¹ Ω/cm² when using the plating‐out method. The surfaces of these films were shown to be metallized by means of X‐ray analysis. Scanning electron microscopy (SEM) was also studied. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 71: 1361–1365, 1999     

2种担子菌对磷矿中磷的浸提效果

研究木蹄层孔菌和桦剥管菌发酵液对低品位磷的浸出效果.结果表明,术蹄层孔菌的解磷能力显著强于桦剥管菌.最佳浸磷条件为:(1)木蹄层孔菌:矿液比为1∶3,浸矿时间为4 d,初始pH 1.88,提取液中磷最大质量浓度为34.95 mg/L,最大提取率为1.6%.(2)桦剥管菌:矿液比为1∶3.5,初始pH为2.51,提取液中磷最大质量浓度为8.12 mg/L,最大提取率为0.24%.     

涂料企业如何走出品牌塑造的误区

分析了涂料企业在品牌塑造过程中的种种误区,并对如何塑造、培育品牌提出了建议。     

如何解决乙炔发生系统蝶阀泄漏乙炔气的问题

蝶阀装置在乙炔生产中具有安全密封作用,但加料操作过程易对其造成损伤,不仅影响生产,而且是造成乙炔气大量泄漏的主要原因。根据长期生产实践,分别从材质到操作等细节问题进行了分析,为避免蝶阀泄漏找到了比较妥善的解决办法,降低了蝶阀装置的维修率。     

Studies on the lipids of sheep red blood cells. II. The incorporation of phosphorus into phospholipids of HK and LK cells

The incorporation of inorganic phosphate (as NaH₂PO₄) into the phospholipids of sheep red blood cells was studied in vitro in blood samples from five highpotassium (HK) and five low-potassium (LK) sheep. The erythrocytes from HK sheep incorporated more activity in 4 hr than those from the LK sheep. However no activity was incorporated into the major phospholipids of the cells (phosphatidyl ethanolamine, phosphatidyl serine, and sphingomyelin) of either group. The phosphatidic acid fraction was labeled in both groups and to a significantly greater extent in the HK samples. However the highest activity in the phospholipid of sheep red-cells was located in three unknown compounds not previously detected. Their specific activities were the same in the HK and the LK samples although they were present in slightly larger amounts in the HK samples. In general, incorporation was at a rather low level, and from stoichiometric considerations it was concluded that the metabolism in the red-cell phospholipids could not be directly involved in the active transport of ions across the cell membrane. This work also confirmed a previous report that no quantitative differences exist among the major phospholipid classes in the two types of cells.     

14家安全环保清洁生产先进企业受表彰行业安全环保清洁生产自律标准将起草

今年是中国橡胶工业协会成立20周年,也是中国橡胶工业协会废橡胶综合利用分会成立20周年。经过20年的建设和发展,中国橡胶工业协会及所属各分会已成为团结全行业的中枢,成为会员企业乃至全行业权益的代表,成为沟通政府与企业的桥梁和纽带。随着橡胶工业的持续、快速、健康地发展,废橡胶综合利用行业也涌现出一批大公司、大企业集团和骨干企业,成为废橡胶综合利用行业的领头羊,为我国废橡胶综合利用事业的发展作出了较大的贡献。在废橡胶综合利用分会成立20周年之际,中国橡胶工业协会决定对南通回力橡胶有限公司等14家安全环保清洁生产先进企…     

二段转化器出口氯化氢气体两种分析方法的探讨

介绍了用化学滴定法和气相色谱法分析二段转化器出口氯化氢气体的含量,得出氯化氢气体含量高时用化学滴定法测定,氯化氢气体含量低时用气相色谱法测定更精确。     

Studies on the thermal degradation of phosphorus containing polymers: 7. Thermal degradation of phosphorylated poly(vinyl alcohol)

The thermal degradation of phosphorylated poly(vinyl alcohol) was investigated using thermogravimetric analysis, infra-red spectroscopy and gas chromatography. The introduction of phosphoric acid groups changed the course of the thermal degradation of the polymer. The dehydration was accelerated and the scission of the polymer chain was inhibited. The cis-β-elimination mechanism of the phosphorus ester group was proposed for the accelerated dehydration.     

蓬勃发展的中国磷肥工业如何面对磷矿资源瓶颈

指出目前我国高浓度磷复肥实物年生产能力已达1 300万t以上,其中DAP年生产能力已达650万t,到2005年底将达960万t。在庆贺成绩之余,应看到高浓度磷复肥已经到了必须进行限制其发展的时候了,否则,将带来巨大的风险和隐忧。为此,提出6点建议,希望国家重视并采取有力的调控措施解决酸肥基地的用矿问题,解决“酸肥基地”与“矿肥基地”的协调发展问题,解决合理开发利用我国磷矿资源,严禁出口磷矿。     

Studies on sublimation of disperse dye out of dyed polymers. II. Rate of sublimation and amorphous transition of polypropylene

The diffusion coefficient D of disperse dyes through unmodified polypropylene (dyed at 120° and 137°C) was measured at 50°–160°C in the dry system. The diffusion transition points indicated by the breaks in the log D versus 1/T°K were obtained at about 70°, 90°, and 115°C. The 70° and 115°C transitions are in good accordance with the transition temperature of smectic into monoclinic phase and with the temperature of abrupt change in lattice expansion of monoclinic crystal, respectively. These phenomena were explained on the basis of the intimate correspondence between amorphous and crystalline transitions, as expressed by one of us for poly(ethylene terephthalate). The 115°C transition was confirmed by the same sort of diffusion transition occurring, expectedly, at 83°C in the case of polyethylene, an abrupt increase in lattice expansion of which had been found at about 80°C. The diffusion transitions were also confirmed by dilatometry and shrinkage measurement. The 90°C transition has never been reported and it cannot be explained at present.     

提高行业实力化“危”为“机” 依靠企业创新柳暗花明——中国涂料工业关键经济指标解析

通过对2007年、2008年全国主要各省市涂料企业关键经济指标统计数据的汇集,利用美国著名经济学家索罗(R·M Solow)的"投入产出法数学模型"进行定性、定量分析,得出了当前我国涂料企业的产能过剩、企业规模小、效率差异大的症结,只有依靠创新、提高集约度、提高效率和效益才是企业和行业发展的必然出路。