Topics: Engineering Thermodynamics, Work, Heat Transfer, Thermodynamic properties, temperature, Law of Thermodynamics, Non-Flow Processes, Constant volume process, Constant pressure process, Polytropic process, Adiabatic process, Isothermal process, Flow Processes, Nonsteady-flow processes, Boiler, condenser, Throttling, Reciprocating compressor, Cycle efficiency, Reversibility, irreversibility, Exergy, Gibbs function, steady-flow system, Properties of Fluids, Vapour Power Cycles, carnot cycle, rankine cyclel, reheat cycle, regenerative cycle, economiser, air preheater, steam cycles, Gas Power Cycle, gas turbine cycle, Closed-cycle gas turbine, Intercooling, reheating, Combined gas, steam cycles, Reciprocating engine cycles, Heat Pump, Refrigeration Cycles, Reversed Carnot cycle, Practical refrigeration cycles, Water refrigerator, Absorption refrigerators, Gas cycles, Hygrometry, psychrometry

Topics: Thermodynamics, steady-flow equation, working fluid, reversible process, polytropic process, heat engine, entropy, exergy, heat engine cycle, carnot cycle absolute temperature scale, constant pressure cycle, air standard cycle. Otto cycle, diesel cycle, dual combustion cycle, combustion, fuels, combustion equations, enthalpy, power plant thermal efficiency, steam cycles, rankine cycle, gas turbine cycles, nozzles, jet propulsion, rotodynamic machinery, reciprocating internal-combustion engines, engine output, engine efficiency, supercharging, refrigeration, heat pumps, reversed heat engine cycles, vapour-compression cycles, gas cycles, psychrometry, air-conditioning, heat transfer, conduction equation, conduction, convection, heat exchangers, black-body radiation, combined cycles

Topics: soil properties, soil management, tropical environment, temperature, solar radiation, rainfall, tropical climates, vegetation, physiography, Anthropocene, biodiversity, climate change, demographics, Green Revolutions, Tropical Agroecosystems, land use, land-use change, Pedology, Physics, Chemistry, Biology, Laterite Paradigm, tropical soils, tropical soil research, Soil Taxonomy, soil classification systems, soil physical properties, soil temperature, soil structure, soil compaction, soil water, soil erosion, conservation, conservation agriculture, water, rainfed agriculture, irrigated agriculture, irrigation, mineralogy, clay minerals, mineralogy families, Anion Exchange Capacity, soil acidity capacity, Acid Soil Infertility, Liming, overliming, subsoil acidity, secondary acidity, soil biology, soil biodiversity, comminution, decomposition, nutrient elements transformation, soil structure regulation, organic carbon, carbon pools, carbon fractions, animal manures, composts, biochars, organic farming, soil fertility, nutrient cycling, nutrient uptake, determining fertilizer needs, nitrogen cycle, nitrogen pools, atmospheric deposition, biological nitrogen fixation, mineral fertilizers, organic nitrogen mineralization, soil nitrogen fertilizer reactions, Phosphorus Cycle, Phosphorus, Total Soil Phosphorus, inorganic Phosphorus, Phosphorus sorption, Phosphorus release, plant Phosphorus requirements, Phosphorus fertilization, sulfur cycle, sulfur sorption, Sulphur fertilization, Forest–Soil Nutrient Cycles, land clearing, Mechanized Land Clearing, Crop Yield Declines, Field Abandonment, Secondary Forest Fallows, puddling, flooding, rice cultivation systems, Nutrient Management, Yield Stagnation, Nitrogen Sequestration, Livestock-Based Tropical Systems, tropical pastures, Tropical Livestock Management Systems, pastoralism, Smallholder Mixed Crop–Livestock Systems, Extensive Pasture-Based Beef Production, Pasture Degradation, Crop–Pasture Integration, Tropical Tree-Based Systems, Plantation Forestry, Plantation Forestry Species, Agroforestry, Agroforestry Tree Species, Agroforestry Systems, Simultaneous Agroforestry, Sequential Agroforestry, tree crops

Topics: Soil Fertility, Fertilizers, global population growth, food consumption, food production, agricultural land use, crop yields, nutrient use, Crop Yield Limiting Factors, buffering capacity, mineral solubility, soil acidity, soil alkalinity, Soil pH Buffering, Reducing Soil Acidity Effects, Calcareous Soils, Saline Soils, Sodic Soils, Saline-Sodic Soils, nitrogen, Biological Fixation, Phosphorus, Phosphorus cycle, soil Phosphorus forms, Phosphorus sources, Potassium cycle, soil Potassium forms, Potassium sources, Sulfur, Calcium, Magnesium, Micronutrients, iron, zinc, coper, Manganese, Boron, chloride, Molybdenum, Nickel, Beneficial Elements, soil fertility evaluation, plant nutrient-deficiency symptoms, plant analysis, greenhouse tests, soil testing, nutrient management, soil characteristics, nutrient placement, Nutrient Interactions, nutrient Economics, Agricultural Productivity, Environmental Quality

Topics: biogeochemical cycles, Water cycle, carbon cycle, fast cycle, slow cycle, biofuel, tilman's principle, nitrogen cycle, haber-bausch process

Topics: water cycle, nitrogen cycle, food chain, food web, carbon cycle, energy, thermodynamics, ammonification, biomes, freshwater biome, aquatic biome

Topics: Ovarian Cycle, Menstrual Cycle

Topics: Biogeochemical Cycle, water cycle, Phosphorous Cycle, carbon cycle, Saltpeter, Thermocline, Algae Growth

Topics: Transport Systems, Absorption of Fat, Active Transport

Topics: Thermodynamics, energy, energy transfer, energy analysis, closed systems, mass analysis, second law of thermodynamics, entropy, exergy, gas power cycles, refrigeration cycles, thermodynamic properties relations, gas mixtures, gas-vapor mixtures, air-conditioning, chemical reactions, chemical equilibrium, phase equilibrium, compressible flow, renewable energy