一、自然界中的氮循环( The Nitrogen Cycle)

Government Debt 1. Is budget deficit correctly measured? （1)Inflation （2)Capital Assets （ 3)Uncounted liabilities （ 4) Business cycle

▪ 系统开发的系统开发策略与开发计划 • 接收式的开发策略 • 直接式的开发策略 • 迭代式的开发策略 • 实验式的开发策略 （要求掌握各种方法的基 本细想，实施步骤，优缺点和适用范围） ▪ 1.生命周期法（Life Cycle Approach ） ▪ 2.原型法（Prototyping Approach） ▪ 3.面向对象法（ Object-Oriented Approach）

Handout 19: More about Dual-input describing functions- Limit cycle stability analysis Eric Feron April 16, 2004 Dual-input describing functions for Toggle switch Another servo-motor application

Main Idea Nominal Rigidity nominal price rigidity nominal wage rigidity Real Rigidity Real price rigidity Real wage rigidity Unemployment, Economic Cycle and Policy Suggestion

Section M Nitrogen Metabolism M1. Nitrogen Fixation and Assimilation M2. Amino acid metabolism M3. The urea cycle M4. Hemes and chlorophylls

The cellular respiration (complete oxidation of fuels) can be divided into three stages Stage I All the fuel molecules are oxidized to generate a common two-carbon unit, acetyl-CoA. Stage II The acetyl-CoA is completely oxidized

16.1 Water circulates through the hydrologic cycle (水文循环) The Earth's water is constantly circulating, powered by the heat of the sun and the force of gravity. Water evaporated from ocean precipitates(降水) into the ocean: direct route. Water evaporated from ocean is blown by winds until it is over the land and precipitates: (1) evaporates beck into atmosphere, (2). Infiltrate

3.1 Common feature of spontaneous change 3.2 The second law of thermodynamics 3.3 Carnot cycle and Carnot principle 3.4 Definition of entropy 3.5 Clausius inequality ; principle of increase of entropy 3.6 Calculate the change of entropy 3.7 Statistical view of entropy 3.9 Direction of change and conditions in equilibrium 3.10 Calculate of G 3.11 Relations of thermodynamic functions 3.12 Clapeyron equation 3.13 The third law and conventional entropy 3.8 Helmholtz function and Gibbs function

Images removed due to copyright considerations. See the following: Figure 1 and Table 1 in Reed SI. 2003. Ratchets and clocks: The cell cycle nover ubiquitylation and protein turnover. Nat Rev. Mol. Cell Biol. 4: 855-864. Figure 1 in Bartek J, Lukas J. Mammalian G1-and S-phase checkpoints in response to DNA damage. Curr Opin Cell