Topics: population, expansive population pyramids, stationary population pyramids, population pyramid, population size, population density, population abundance, population growth, community, ecosystem, energy flow, decomposition, nutrient cycling, biodiversity, environment, ecological niche

Topics: Environmental management, pollution pays principle, carbon tax, user pay principle, environmental sustainability, social sustainability, human development index, gender-related development index, index of social health, index of economic well being, happy planet index, genuine progress indicator

Topics: space, time, kinematics, scalar, vectors, vector operations, speed, velocity, acceleration, rectilinear motion, circular motion, dynamics, inertia mass, weight, force friction, incline plane, linear momentum, statics, work, enrgy, gravitation, weightlessness, Kepler's law, rotational dynamics, angular momentum, oscillatory motion, simple harmonic motion, damped oscillation, forced oscillation

Topics: organic chemistry, bonding, homologous series, functional group, organic compounds classification, Alkanes, alkenes, alkynes, alkanols, halogenoalkanes, alkanals, alkanones, alkanoic acid, alkanoates, acid chloride, acid anhydride, acid amide, amines, nitrides, cyclocompunds, qualitative analysis, quantitative analysis

Topics: Computer aided engineering, operators

Topics: Materials science, Metallurgy, Metallography, Crystal physics, Neumann’s symmetry principle, Equilibrium thermodynamics, phase diagrams, Gibbs phase rule

Topics: Geometric Drawing, Engineering Drawing, scales, Representative Fraction, plain scales, diagonal scales, proportional scales, triangle, quadrilateral, polygons, Isometric Projection, Conventional Isometric Projection, Isometric Drawing, tangency, Oblique Projection, loci, Trammels, Orthographic Projection, First Angle Orthographic Projection, Third Angle Orthographic Projection, prisms, pyramids, cylinders, cones, Auxiliary Elevations, Auxiliary Plans, Conic Sections, Ellipse, Parabola, Hyperbola, Fillet Curves, straight line, inclined plane, oblique plane, developments, prisms, cylinders, cones, Cycloid, trochoid, involute, Archimedean Spiral, helix, Freehand Sketching, Pictorial Sketching, Simple Cam Design, Screw Threads, Dimensioning, Conventional Representations, Framing, Title Block, Assembly Drawings

Topics: Entropy

Topics: Constant volume process, polytropic process

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