14-1 Simple Harmonic Motion (SHM)简谐振动 14-2 Amplitude Period Frequency phase简谐振动的振幅,周期,頻率和位相 14-3 The Energy of SHM简谐振动的能量 14-4 Damped Vibration& Forced Vibration Resonance阻尼振动受迫振动共振 14-5 Superposition of two SHM with same Frequency in same Direction同方向同頻率的简谐振动的合成 14-6 Superposition of two Perpendicular SHM相互垂直的简谐振动的合成

History of Agricultural Development Food Gathering Domestication of Crops Organic Farming Transgenic Farming since Green Revolution) High inputs of energy subsidies including fertilizers, pesticides, fossil fuels, mechanization, irrigation advanced technology High outputs at the expense of environmental integrity Contamination of ground water surface water by agrochemicals sediments Hazards to human and animal health(e.g. residual effect of methamidophos in vegetables, Agent orange in Vietnam, cross-Atlantic DDT contamination Loss of genetic diversity in plants and animals

1 Definitions The details of the velocity profile u() at any x location are rarely significant in engineering applications. The most significant quantities are integral thicknesses which describe the mass Alux, momentum flux, and kinetic energy flux in the shear layer:

1. Lipids encompass a large and diverse group of organic compounds 1.1 Lipids are broadly defined as biological molecules that are soluble in organic solvents. 1.1.1 Lipids are usually extracted from biological materials by nonpolar solvents like ether, chloroform(氯仿), benzene(苯). 1.2 The biological functions of lipids are diverse. 1.2.1 Certain lipids(e.g., triacylglycerols(三脂酰甘油), commonly called fats) serve as efficient reserves for the storage of energy

67.1 Introduction 67.2 Power System Data Acquisition and Control 67.3 Automatic Generation Control Load Frequency Control. Economic Dispatch.Reserve K. Neil Stanton Monitoring. Interchange Transaction Scheduling Stanton Associates

一、将下列专业术语译成汉语(每个1分,共10分) 1. agroecology 2. ecosystem 3. energy flow 4. food chain 5.habitat 6. decomposer 7. niche 8. ecotype

In the chapter we shall study the properties of second-order circuits, i.e., circuits containing two energy-storage elements. Such circuits will, in general, be characterized by second-order differential equations

R. Ramakumar Oklahoma State University 60.1 Distributed Power Generation Allen M.Barnett Photovoltaics- Wind-Electric Conversion. Hydro AstroPower, Inc. Geothermal. Tidal Energy. Fuel Cells.Solar-Thermal-Electric

59 Conventional Power Generation G.G. Karady Fossil Power Plants. Nuclear Power Plants. Geothermal Power Plants. Hydroelectric Power Plants

The zeroth law of thermodynamics: The expression of the fundamental experiment fact. The first law of thermodynamics: The a statement of conservation of energy for pure thermodynamic system. The second law of thermodynamics: Why we need the second law of thermodynamics?