Topics: Soil Fertility, Soil Productivity, Essential Soil Nutrient Elements, Soil Acidity, soil Basicity, Liming, Liming Materials, Soil Alkalinity, salinity, sodicity, soil fertility evaluation, Soil Fertility maintenance, Soil Fertility Management Practices, crop productivity, irrigation, soil tillage, soil organic matter, crop rotation, Continuous Cropping, animal manure, green manure, cover cropping

Topics: Agriculture, Land use, land tenure system, crop production, crop plants classification, Pasture, Forage Crops, agriculture production soils, farm animals production, ruminants, cattle management system, farm animal production, pigs production, poultry production, poultry management, chicks management, broilers management, cockerels management, layers management, Agricultural Extension Services, forest production, wildlife production, fish production

Topics: Criminology, Security Studies, Climate of Nigeria, Drainage of Nigeria, Population Migration, Rural Settlements, Urban Settlements, mining, fishing, animal husbandry, food crop agriculture, export crop agriculture, irrigated agriculture, modern manufacturing, internal trade, rail transport, road transport

Topics: Soil Conservation, Water Conservation, erosion, Soil Erosion and Civilization, Geologic Erosion, Sedimentation, Landscape Development, rock types, Sedimentary Landforms, Mass Movement Deposits, Glacial Landscapes, Water Erosion, erosion damage, Vegetation, Soil Properties, Soil Erodibility, pollution, Water-Erosion Control, Wind Erosion, wind erosion process, Windbreaks, Shelterbelts, Wind-Erosion Control, Predicting Soil Loss, Tolerable Soil Loss, Universal Soil Loss Equation, Computer-Based Soil Loss Prediction Models, Wind-Erosion Prediction Equation, Wind Erosion Prediction System, Soil Map Unit Interpretations, soil survey, Land Use Planning, managing land, cropping systems, Managing Monocultures, crop rotations, Multiple Cropping, Evaluating Cropping Systems, strip cropping, tillage, Conservation Tillage, deep tillage, Contour Cultivation, Emergency Wind-Erosion Control, Gully-Control Structures, road ditches, culverts, Earthen Dams, Streambank Protection, flood control, Wind Erosion-Control Structures, Pastureland Management, Rangeland Management, Forestland Management, water cycle, drought, Soil Drainage, wetlands, Irrigation, Irrigation Methods, Land Reclamation, Conservation Irrigation, soil pollution, pollutants, industrial wastes, agricultural wastes, aerosols, polluted soil, Hazardous Sites, Soil Remediation, Water Quality, water Pollution, Water acidification, Farm Service Agency

Topics: Genetics, breeding, Cell Organisation, cell division, heredity, inheritance, Breeding Self-Pollinated Crops, crop breeding methods, Breeding Cross-Pollinated Crops, Breeding Asexually-Pollinated Crops, Animal Breeding

Topics: Biochemical Calculations, acid-base chemistry, aqueous solutions, equilibrium constants, acids, bases, laboratory buffers, amino acids, peptides, blood buffers, carbohydrates, lipids, nucleotides, nucleic acids, biochemical energetics, energy yielding, energy requiring reactions, oxidation-reduction reactions, metabolism, photosynthetic phosphorylation, active transport, enthalpy, entropy, activation energy, enzymes, enzyme kinetics, enzyme inhibition, enzyme assays, multisubstrate enzymes, kinetic mechanisms, multisite enzymes, allosteric enzymes, enzyme turnover, spectrophotometry, fluorometry, optical rotation, isotopes

Topics: property rights, functional ownership, renewable and non renewable resources, maximum sustainable yield

Topics: Tensile Testing, Stress-Strain Curve, stress, strain, Ductility, Anisotropy, Tensile Loads, Uniaxial Tensile Testing, Tensile Testing Equipment, Strain Sensors, Gripping Techniques, Environmental Chambers, Product Design, Hardness-Strength Correlation, elastic modulus, mechanical testing, Sheet Formability, Formability Tests, Plane-Strain Tensile Testing, Anelasticity, Proportional Limit, damping, Fracture Characterization, Yield Point, Elastomers, plastic, ceramic, ceramic-matrix, Fiber-Reinforced Composites, High-Strain Rates, Hot Tensile Testing, temperature control, High Strain Rate Tensile Testing, Conventional Load Frames, Expanding Ring Test, Flyer Plate Loading, Short Duration Pulse Loading, Split-Hopkinson Pressure Bar Technique, Rotating Wheel Test

Topics: investment, credit, interest rate, interest rate measurement, compound interest, simple interest, accumulated amount function. treasure bills, annuities, yield rates, reinvestment rates, depreciation method, capitalized cost, book value, market value, loan repayment, amortization, bond valuation, profitability index, cash flow duration, stock valuation, options, options strategies, foreign currency exchange rates

Topics: disease frequency, disease distribution, etiology, disease processes, disease prevention, morbidity, mortality, death certificate, epidemiological methods, Case Report, Case Series, analytic studies, Case-control studies, Cohort studies, interventional study, screening, False positives, False Negatives, Predictive value, yield, Communicable Disease, infection, infection control, disease surveillance, Epidemiologic surveillance, Active surveillance, Passive surveillance, Nutritional surveillance, Demographic surveillance, Sentinel surveillance, epidemics, pandemic, endemic, epidemic curve