Topics: Metallic Materials, metal, alloy, Ceramic Materials, Polymeric Materials, polymers, Composite Materials, chemical bonds, bonding, covalent bond, ionic bond, metallic bond, crystal structure, crystallography, atomic packing, Bravais lattices, crystal, unit cell, lattice point, crystallographic planes, density, Geometrical arrangement, solubility

Topics: Soil Tests analysis Laboratory Guide, Plant Analysis Laboratory Guide, soil analysis, soil testing, Sample Aliquot Determination, Soil pH, Soil Storage, Soil Buffer pH, Adams–Evans Buffer, Mehlich Buffer, Titratable Acidity, Exchangeable Acidity, Liming Materials, Extractable Phosphorus, Olsen’s Sodium Bicarbonate, Ammonium Bicarbonate–DTPA, Plasma Emission Spectrometry, UV-VIS Spectrophotometry, Cation Determination, Micronutrients, Trace Heavy Metals, Extractable Nitrate–Nitrogen, Extractable Sulfate–Sulfur, Monocalcium Phosphate, Humic Matter Content Determinations, Wet Digestion, Soluble Salt Determination, Soil Texture, plant analysis, Sample Preparation, Petioles, Decontamination, Tissue Testing, Nitrate–Nitrogen Test, Nitrate–Nitrogen Stalk Test, Instrumental Analysis, Emission Spectrophotometry, Flame Emission Spectrophotometry, Atomic Absorption Spectrophotometry, Inductively Coupled Plasma Emission Spectrometry

Topics: atoms, radiation, atomic spectra, quantum theory, uncertainty principle, atomic orbitals, electron spin, hydrogen atom, chemical bonds, ionic bonds, covalent bonds, VSEPR model, valence-bond theory, molecular orbital theory, Gas laws, gas density, molecular motion, real gases, liquid, solids, intermolecular forces, liquid structure, solid structure, liquid crystals, inorganic materials, metallic materials, hard materials, nanomaterials, thermodynamics, enthalpy, heating curves, Born-Haber cycle, bond enthalpies, entropy, Gibbs free energy, physical equilibria, solubility, colligative properties, binary liquid mixtures

Topics: Geology, Earth's Surface, Earth's Dimensions, Surface Relief, Earth's Interior, Temperature gradient, Earth's Density, Earthquakes, Isostasy, Continental Drift, Oceanic Ridges, Rock Magnetism, Drift Mechanism, Geological History, Strati-graphical column, Plate Tectonics, Earth age, Earth origin, Precambrian, Phanerozoic, Surface Processes, Weathering, Erosion, Deposition, Minerals, Igneous Rocks, Sedimentary Rocks, Metamorphic Rocks, Geological Structures, Strength of Geological materials, In-situ investigations, Laboratory investigations, Geological Maps, Ground-water, Slope Stability, Reservoirs, Dams, Excavations, Ground water treatment, Nuclear waste, Foundations, Construction materials, Water supplies, Retaining walls, Thermal treatment, Consolidation, Grouting, Dewatering, Underground excavations, Disposal of excavated materials, Surface excavations, Ground-water control, Underground reservoir, Reservoirs, Dams, Slope Stability, Slope Failure, Water levels, Aquifers, Aquicludes, Hydrological Cycle

Topics: structure of metals, mechanical behavior of metals, manufacturing properties of metals, metal alloys, heat treatment, ferrous metals, alloy, Nonferrous metals, alloys, polymers, ceramic, glass, graphite, diamond, nano materials, composite materials, metal-casting processes, metal-casting equipment, metal casting, metal-rolling, metal-forging, metal extrusion, drawing processes, sheet-metal forming processes, powder metal, superconductors, plastics, rapid-prototyping processes, machining, cutting-tool materials, cutting fluids, machining processes, machining centers, machine-tool structures, machining economics, abrasive finishing, finishing operations, micromanufacturing, microelectronics devices, solid-welding processes, brazing, soldering, adhesive-bonding, mechanical fastening, surface technology, engineering metrology, instrumentation, quality assurance, computer-integrated manufacturing, computer-aided manufacturing

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: Inorganic chemistry, atomic structure, atomic orbitals, molecular structure, bonding, Lewis structure, valence bond theory, Molecular orbital theory, ionic solids, ionic bonding, semiconduction, acid, base, Brønsted acidity, Lewis acidity, oxidation, reduction, reduction potentials, redox stability, Molecular symmetry, isomerism, coordination compounds, chirality, spectroscopy, chemical analysis, Magnetometry, periodic trends, Group 1 elements, Group 2 elements, hydrogen, Group 13 elements, Group 15 elements, Group 14 elements, Group 16 elements, d-Block elements, Representative compounds, Electronic spectra, Magnetism, Coordination chemistry, Ligand substitution reactions, Ligand substitution, Redox reactions, Photochemical reactions, Lanthanoid chemistry, Actinoid chemistry, ligands, Solid-state chemistry, materials chemistry, Metal oxides, nitrides, fluorides, Chalcogenides, intercalation compounds, Hydrides, inorganic pigments, Semiconductor chemistry, Molecular materials, fullerides, catalysis, Homogeneous catalysis, Heterogeneous catalysis, Hybrid catalysis, Characterization, fabrication, Nanomaterials, nanoscience, nanotechnology, Self-assembled nanostructures, Bioinorganic nanomaterials, Biological inorganic chemistry, Catalytic processes, Biological cycles, Chelation therapy, nitrogen cycle, hydrogen cycle, acid-base catalysis, Tethered catalysts, Electrocatalysis, Alkene polymerization, Ammonia synthesis, Hydroformylation, Alkene metathesis

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: Simple stress, simple strain, Shear stress, Saint-Venant's principle, Stress, strain, Modulus of elasticity, Modulus of Rigidity, Bar elongation, Superposition principle, Tapering section Bars, Elongation due to self-weight, Uniform strength column, Statically indeterminate systems, Temperature stresses, Shrinking on, Strain analysis, Tensile test diagram, Elastic constants, Three-Dimensional stress systems, Compound stress, compound stress, Principal stresses, Maximum shear stresses, Mohr's Stress cycle, Three coplanar stress, Ellipse of Stress, Strain Analysis, Principal Strain, Principal shear strain, Mohr's Strain cycle, Strain Energy, Shear force, Bending moment, Supports types, Bending stress in beams, Simple bending theory, Moment of inertia, Flitched beams, composite beams, Unsymmetrical bending, Ellipse of inertia, Shear stress in beams, Shear stress variation, Built-up beams, Shear centre, Deflection, Beam differential equation, Deflection at a point, Macaulay's method, Moment-Area method, Strain energy due to bending, Castigliano's First theorem, Deflection by castigliano's Theorem, Impact loading on beams, conjugate beam method, Betti's reciprocal deflections theorem, Maxwell's Reciprocal Deflection theorem, Fixed beams, Continuous beams, Fixidity Effects, Clapeyron's three moment equation, Torsion, Springs, Columns, Struts, Failure Theories, Plastic bending, Plane frame structures, Materials properties, Materials testing, Tensile testing, Compression testing, Torsion testing, Hardness testing, Impact testing, Fatigue testing

Topics: Electronics, Power Electronics, Optoelectronics, Microwaves, Electromagnetics, Radar, semiconductors, diodes, semiconductor manufacturing, Microlithography, transistors, Junction Field-Effect Transistors, Bipolar Transistors, Metal-Oxide Semiconductor Field-Effect Transistor, Single Electron Transistors, integrated circuits, integrated circuit technology, Surface Mount Technology, amplifier, signal analysis, active filters, power electronics, Power Semiconductor Devices, power conversion, Lasers, Electromagnetic Fields, magnetism, magnetic fields, magnetic recording, wave propagation, space propagation, wave guides, antennas, Fresnel Zone Plate Antenna, Microwave Devices, Lightning, pulse radar, continuous radar, Electroacoustic Transducers, Ferroelectric Materials, Piezoelectric Materials, Electrostriction, hall effect, superconductivity, dielectric, insulators