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比O电负性小的原子与O形成的化合物 (一)氧化物性质与陶瓷材料 1、氧化物的熔点
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M的物理意义是力学量O的平均值变化一个标准方差△O所需的时间
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探索了以二次铝灰为原料,通过低温碱性熔炼-浸出-晶种分解制备α-Al2O3工艺.研究了碱灰比、盐灰比、熔炼温度、熔炼时间、浸出温度、浸出时间和固液比等因素对铝及硅浸出率的影响.探讨了使用晶种分解法处理浸出液制取氧化铝的工艺的可行性.结果表明:优化制备条件为碱灰比1.3,盐灰比0.7,熔炼温度500℃,熔炼时间60 min,浸出温度60℃,浸出时间30 min,固液比1:4;铝浸出率最高可达92.71%;晶种分解法处理浸出液的后续工艺可行有效
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Reading Assignments: Lectures #1-2& PS#1: Chapter 1 of Oppenheim and Willsky(O& W), including (see p. 71) Lectures #3-4 PS#2: Chapter 2 of Oppenheim and Willsky(O&w)
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Reading Assignments Lectures #5-6& PS#2: Chapter 3 of Oppenheim and Willsky(O& w) Lectures #3-4 &z PS#3: Chapters 3&4 of Oppenheim and Willsky(O&w) Exercise for home study (not to be turned in, although we will provide solutions)
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PROBLEM SET 7 Issued: October 28. 2003 Due: November 5. 2003 REMINDER: Computer Lab 2 is also due on November 7 Reading Assignments Lectures #14-15 PS#7: Chapter 7(through Section 7. 4)and Chapter 8(through Section 8.4) of o&W Lectures #16-18 PS#8: Section 7.5 and Chapters 8 and 9(through Section 9.6)of O&W Exercise for home study(not to be turned in, although we will provide solutions)
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Problem set SolutioN Exercise for home study o&W8.35 (a) From the system diagram, we see that a(t)=a(t)cos(wet) Using the multiplication property ZGu)= o(X(u)* FT(cos wct)) FT of cos wt is two impulses with area T at +wc. Therefore, Z(w)is the spectrum
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1. Classification y Ideal or perfect crystal real or defect crystal According to dimension o point defect: vacancies, interstitial atoms s line defect dislocation planar defect: stacking fault o volume defect mosaic structure
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1 An introduction to biotechnological innovations Industry G. Mijnbeek and C. K. Leach 2 Biocatalyst in organic chemical synthesis R O. Jenkins 3 Efficiency of growth and product formation R.O. Jenkins
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以氯化氨水溶液的凝固模拟了钢锭的凝固过程。通过NH4Cl-H2O系模拟凝固试验,研究了凝固过程中温度的分布和凝固规律,实测结果与理论计算结果基本上是一致的。用着色方法直接观测了模拟模内液流运动型式和宏观偏析沟槽的形成过程,同时指出采用模内吹氩气措施可以影响两相区的结构和偏析沟槽的形成
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