Topics: Nutrient requirement, nutrient, feeding, digestion, vertebrate gut

Topics: Forages, Grassland Agriculture, grass morphology, legume structure, legume morphology, carbon metabolism, Mineral Nutrient Acquisition, Metabolism, forage ecology, Climate, Climate-Change, Forage Adaptation, Plant Interactions, Plant-Herbivore Interactions, forage species, forbs, forage systems, forage production, forage management, Fertilization, Nutrient Management, Irrigation, Water Management, weed management, insect management, forage improvement, forage breeding, seed production, forage quality, Digestibility, plant chemistry, Predicting Forage Quality, Post-Harvest Physiology, forage harvesting, forage utilization, hay storage, silage production, biomass, pasture management, pasture design, grazing management, Grazing Animal Nutrition, Grazing Animal Behavior, Forage-Induced Animal Disorders, Grazing Systems, grazing strategies

Topics: Soil, rock weathering, soil formation, soil profile, soil classification, soil taxonomy, entisols, inceptisols, andisols, gelisols, histosols, Soil Architecture, soil color, soil texture, soil textural classes, mineral soils structure, tillage, soil density, soil water, soil water energy, soil water content, soil water potential, infiltration, percolation, water vapor movement, hydrologic cycle, soil-plant-atmosphere continuum, enhancing soil drainage, septic tank drain fields, soil aeration, redox potential, wetlands, soil temperature control, soil colloids, layer silicate clay structure, cation exchange capacity, soil acidity, soil ecology, soil organism, earthworms, ants, termites, soil algae, soil fungi, soil prokaryotes, soil organic, soil organic matter management, climate change, soil phosphorus, sulfur oxidation, sulfur retention, soil fertility maintenance, phosphorus cycle, ammonia volatilization, ammonia fixation, sulfur cycle, calcium, magnesium, silicon, trace elements, Practical Nutrient Management, chemical pollution, Geographic Soils Information

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: soil science, soil habitat, soil mineral components, soil organisms, soil organic matter, soil structure, soil micromorphology, soil porosity, soil-forming factors, climate, hydrologic cycle, soil temperature, evaporation, cation exchange, Anion adsorption, Clay–organic matter interactions, soil aeration, soil respiration, soil profile, Hydromorphic soils, Salt-affected soils, nutrient cycling, phosphorus, sulphur, potassium, calcium, magnesium, trace elements, soil management, soil acidity, liming, soil erosion, fertilizers, pesticides, nitrogen fertilizers, phosphate fertilizers, plant protection, problem soils, soil drainage, soil information systems, soil survey methods, soil quality

Topics: Materials Design, Atomic Structure, Atomic Bonding, interatomic spacing, amorphous materials, lattice, basis, unit cells, crystal structure, Allotropic Transformation, Polymorphic Transformation, Crystal Structures, unit cell, Covalent Structures, diffusion, Fick’s Law, Mechanical Properties, Tensile Test, stress, strain, Nanoindentation, Fracture Mechanics, Fatigue, Fatigue Test, creep, rupture, stress corrosion, Strain Hardening, Annealing, Hot Working, Nucleation, cooling curves, cast structure, casting, Directional Solidification, Single Crystal Growth, Epitaxial Growth, Phase Diagram, Phase Equilibrium, Dispersion Strengthening, Eutectic Phase Diagrams, Eutectoid Reaction, Martensitic Reaction, Tempering, Nonferrous Alloys, Glass-Ceramics, Polymers, Polymerization, Thermoplastics, elastomers, rubbers, adhesives, Composites, Particulate Composites, Fiber-Reinforced Composites, plywood, concrete, asphalt, Electronic Materials, semiconductors, insulators, Electrostriction, Piezoelectricity, Ferroelectricity, Magnetic Materials, Magnetization

Topics: Materials Design, Atomic Structure, Atomic Bonding, interatomic spacing, amorphous materials, lattice, basis, unit cells, crystal structure, Allotropic Transformation, Polymorphic Transformation, Crystal Structures, unit cell, Covalent Structures, diffusion, Fick’s Law, Mechanical Properties, Tensile Test, stress, strain, Nanoindentation, Fracture Mechanics, Fatigue, Fatigue Test, creep, rupture, stress corrosion, Strain Hardening, Annealing, Hot Working, Nucleation, cooling curves, cast structure, casting, Directional Solidification, Single Crystal Growth, Epitaxial Growth, Phase Diagram, Phase Equilibrium, Dispersion Strengthening, Eutectic Phase Diagrams, Eutectoid Reaction, Martensitic Reaction, Tempering, Nonferrous Alloys, Glass-Ceramics, Polymers, Polymerization, Thermoplastics, elastomers, rubbers, adhesives, Composites, Particulate Composites, Fiber-Reinforced Composites, plywood, concrete, asphalt, Electronic Materials, semiconductors, insulators, Electrostriction, Piezoelectricity, Ferroelectricity, Magnetic Materials, Magnetization

Topics: chemistry, measurement, atoms, molecules, chemical formulas, chemical reactions, gaseous state, thermochemistry, quantu, theory, electron configuration, periodicity, ionic bonding, covalent bonding, molecular geometry, chemical bonding theory, states of matter, solutions, rates of reaction, chemical equilibrium, acid, bases, acid-base equilibria, solubility, complex-ion equilibria, thermodynamics, equilibrium, electrochemistry, nuclear chemistry, Main-group elements, transition elements, coordination compounds, organic chemistry, polymer materials

Topics: DC Circuits, Operational Amplifier, Nonlinear Passive Circuit Elements, independent sources, dependent sources, time-varying sources, voltmeter, circuit law, network theorem, circuit analysis, power transfer, Operational Amplifier, Amplifier Models, Transient Circuit, Dynamic Circuit Elements, AC Circuits, Steady-State AC Circuit, filter circuit, bode plot, frequency response, Fourier transform, RLC circuit, AC Power, power distribution, transformer, inductor, digital circuit, switching circuit, analog-to-digital conversion, embedded computing, Diode, Transistor Circuits, Bipolar Junction Transistor, BJT Circuits, MOS Field-Effect Transistor, MOSFET

Topics: Periodicity, representative elements, transition elements, lanthanide series, actinide series, Ionization Energy, Electronegativity, Atomic Radius