《电子商务 E-business》阅读文献：Model business processes for flexibility and re-use A component-oriented approach

对高固含体系下Intermig桨搅拌槽内的桨叶搅拌性能以及颗粒的混合与悬浮特性进行实验研究.采用光导纤维技术对不同桨径、搅拌转速和桨叶离底距离下搅拌槽内底部以及轴向颗粒密度进行测量，同时对临界悬浮转速和搅拌功率进行测定.实验结果表明：对高固含液-固搅拌体系，所采用的Intermig搅拌桨具有很好的轴向混合特性，该桨适合在较大的桨径和较低的桨叶离底距离下应用，可在促进颗粒悬浮与均匀分布的同时，大大降低功率消耗.通过对实验结果的分析和拟合得出底部均匀度与搅拌槽内弗劳德数有关，Q=0.58Fr-0.35，Intermig搅拌桨功率准数在0.2~0.3之间，且与雷诺数关系为NP=2.1Re-0.2

为了尽可能的去除钢中大颗粒的夹杂物, 在实验条件下通过向GCr15轴承钢中添加适量镁、稀土对夹杂物进行改性, 并利用Aspex夹杂物自动分析仪和扫描电镜对钢中改性后的夹杂物尺寸、类型、形貌等进行了观察、分析, 研究了稀土-镁复合处理对夹杂物的影响规律.研究结果表明, 对轴承钢中加入微量镁处理, 可将未进行镁处理钢中的MnS-Al2O3、MnS、Al2O3夹杂改性为以含硫、镁复合夹杂物为主, 同时包含少量Al2O3、镁铝尖晶石夹杂.进一步采用稀土-镁复合处理后, 钢中的夹杂物转变为主要以含Re-S-O夹杂物为主, Al2O3、MnS、镁铝尖晶石夹杂逐步消失, 且夹杂物成球状分布, 绝大多数夹杂物在5 μm以下.稀土-镁复合处理轴承钢后, 10 μm以上的大颗粒夹杂物大大降低, 钢中的夹杂物明显得到细化.钢中镁含量不变时, 随着稀土含量的增加, 大颗粒夹杂物比例明显下降.而在稀土含量相近的情况下, 增加钢中的镁含量也有利于大颗粒夹杂物的去除.稀土-镁的相互作用进一步促进了夹杂物的细化

Foreword 2 Introduction 4 Risk tradition and risk trading 6 From conjecture to calculation 8 The birth of modern insurance 10 Global expansion 16 Reinsurance 24 San Francisco 26 Swiss Re History 30 Money matters 38 World War II 44 Booming economy and growing problems 46 More money matters 50 A poor start for the 21st century 54 Natural catastrophes 56 Financial catastrophes, regulation, and a positive outlook 60

10.1 概述 10.2 镧系元素重要化合物 10.3 稀土元素(RE)

Recently I wrote about 10 qualities of a good employee, which prompted quite a few people to ask about the attributes of a good manager. There isn’t a magic formula for good management, of course, but if you’re a manager, perhaps these tips will help you be more effective. 1. Choose a field thoughtfully. Make it one you enjoy. It’s hard to be

a sign of progress in the management of China is faced with the problem of To solve the problem, the Re-em- laid-off workers. By the end of June 1998, according to official reports, there government, most important of all, needs were 7. 1 million layoffs nationwide

引理1: 设P为数域A,B∈Pn,若有P,Q∈P\\, 使-=p(e-B)Q① 则A与B相似. 证:由(ae-B)Q=aQ-PBQ =APL-PBO =RE-A 得PQ=E,PBQ=A 即P=Q,A=QBQ∴A与B相似

6.6 Coalescing bed-type oily water separators The coalesce is capable of forming oil globules up to l2 mm diameter and the heavier fuel oils usually form long 'stalagmites' which grow to a considerable size before they are released. Because of the 1ow velocities employed the collected oil can flow past the water screen without becoming re-entrained and carried through into the outlet

(Harvard University and NBER) October 1, 2002 Abstract There are two dierent types of media bias. One bias, which we refer to as ideology, re ects a news outlet's desire to aect reader opinions in a particular direction. The second bias, which we refer to as spin