确定局部损失系数的实验方法 例用U形压差计测量水平放置弯管的局部损 失系数。已知d=0.25m,Q=0.04m3/s,U 形管工作液体的密度P=1600kg/m3。如果 测得△h=70mm,试计算5 解忽略沿程损失,对1和2断面列出伯努利方程

1 复习自由能、平衡常数的概念 2 辨别热力学稳定性和动力学稳定性 3 能计算离子键形成时的能量变化 4 能正确使用理论模型和热力学循环方法计算晶格能 5 熟悉晶格能在无机化学中的应用 6 能正确建立玻恩－哈伯热化学循环并用以计算各种 热力学量 7 冠醚的命名和结构特征 8 冠醚的配位性能和冠醚配合物的结构 9 影响冠醚配合物稳定性的因素

Few events obtain the same instant national and even worldwide news coverage as when several people are shot and killed in a public place. The worst examples in the United States come readily to mind Colin Ferguson killed 6 people during his rampage on the Long Island(NY) Railroad in December 1993: 22 people were killed during the October 1991 shooting in Luby's Cafeteria in Killeen, Texas; 5 persons died at the Cleveland Elementary School

通过检测分析钙处理前后钢中夹杂物的形貌和成分的变化,探讨钢液钙处理过程中夹杂物演变规律.利用热力学计算,优化钙处理工艺.结果表明,钙处理可以将钢液中不规则固态夹杂物改性为球形液态夹杂物;1873 K下,当[Al]为0.030%时,[O]控制在5×10-617×10-6,[Ca]控制在0.7×10-630×10-6,钢中夹杂物变性效果良好;当[Al]为0.030%时,[S]控制在6×10-619×10-6,既能使钢中Al2O3夹杂生成液态铝酸钙夹杂物,同时又可以减少CaS生成

基于Johnson-Mehl-Avrami相变动力学模型和Koistinen-Marburger方程,建立了硼钢22Mn B5车门防撞梁热冲压过程的热机械-相变耦合有限元模型,得到了车门防撞梁热冲压过程中板料温度、微观组织及维氏硬度的分布特征,研究了保压压力和保压时间对防撞梁热冲压零件的性能影响.仿真结果表明:车门防撞梁顶部冷却速度为137.3℃·s-1,侧壁冷却速度为69.8℃·s-1,冷却速度决定了防撞梁各个部位的微观组织和维氏硬度;随着保压压力的增大,获得95%以上马氏体的防撞梁的保压时间缩短,可加快生产节拍.进行了防撞梁热冲压试验,对微观组织及维氏显微硬度进行了检测.结果表明:车门防撞梁保压10 s后,顶部及侧壁均已转化为板条状马氏体组织,且顶部硬度为508 HV,侧壁硬度为474 HV

光栅扫描显示下画直线存在的问题: (1)显示速度问题: 例:分辨率:1024×768,24Bit彩色,帧存容量:1024×768×3=2,359,296Byte刷新率85Hz:85×2,359,296=200,540,160(Byte/S)存储器读出时间:~5n

Chapter 1 Introduction Chapter 2 Entropy & Mutual Information (Shannon’s measure of information) Chapter 3 The Asymptotic Equipartition Property (渐进等同分割性) Chapter 4 Entropy Rates of a Stochastic Process Chapter 5 Coding for Discrete Sources Chapter 6 Channel Capacity Chapter 7 The Gaussian Channel Chapter 8 Rate Distortion Theory Chapter 9 复习

1 Software and Software Engineering 2 Process Models 3 Agility and Process 4 Recommended Process Model 5 Human Aspects of Software Engineering 6 Principles That Guide Practice 7 Understanding Requirements 8 Requirements Modeling—A Recommended Approach 9 Design Concepts 10 Architectural Design—A Recommended Approach 11 Component-Level Design 12 User Experience Design 13 Design for Mobility 14 Pattern-Based Design 15 Quality Concepts 16 Reviews—A Recommended Approach 17 Software Quality Assurance 18 Software Security Engineering 19 Software Testing—Component Level 20 Software Testing—Integration Level 21 Software Testing—Specialized Testing for Mobility 22 Software Configuration Management 23 Software Metrics and Analytics 24 Project Management Concepts 25 Creating a Viable Software Plan 26 Risk Management 27 A Strategy for Software Support 28 Software Process Improvement 29 Emerging Trends in Software Engineering 30 Concluding Comments

1. 掌握原子核外电子分布的一般规律（描述核外电子运动状态的四个量子数的物理意义和可能取值，核外电子排布原理，电子排布式和轨道表示式）及其与元素周期表的关系； 2. 了解原子核外电子运动的基本特征，s,p,d 轨道波函数与电子云的空间分布情况； 3. 了解化学键的本质及共价键键长、键角等概念； 4. 熟悉杂化轨道理论，能用该理论判定某些分子的空间构型； 5. 了解分子间力和晶体结构及对物理性质的影响； 6. 了解原子光谱和分子振动光谱的基本原理及应用情况

UNIT I: Protein Structure and Function Chapter 1: Amino Acids Chapter 2: Structure of Proteins Chapter 3: Globular Proteins Chapter 4: Fibrous Proteins Chapter 5: Enzymes UNIT II: Intermediary Metabolism Chapter 6: Bioenergetics and Oxidative Phosphorylation Chapter 7: Introduction to Carbohydrates Chapter 8: Glycolysis Chapter 9: Tricarboxylic Acid Cycle Chapter 10: Gluconeogenesis Chapter 11: Glycogen Metabolism Chapter 12: Metabolism of Monosaccharides and Disaccharides Chapter 13: Pentose Phosphate Pathway and NADPH Chapter 14: Glycosaminoglycans, Proteoglycans, and Glycoproteins UNIT III: Lipid Metabolism Chapter 15: Metabolism of Dietary Lipids Chapter 16: Fatty Acid and Triacylglycerol Metabolism Chapter 17: Complex Lipid Metabolism Chapter 18: Cholesterol and Steroid Metabolism UNIT IV: Nitrogen Metabolism Chapter 19: Amino Acids: Disposal of Nitrogen Chapter 20: Amino Acid Degradation and Synthesis Chapter 21: Conversion of Amino Acids to Specialized Products Chapter 22: Nucle