MeSH ID: T167

Related Concepts:

  • Air [M0000592]
    The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.
  • Airborne Particulate Matter [M0488312]
  • Alveolar Lavage Fluid [M0002974]
  • Balsams [M0002163]
    Resinous substances which most commonly originate from trees. In addition to resins, they contain oils, cinnamic acid and BENZOIC ACID.
  • Beechwood Creosote [M0005305]
  • Bezoars [M0002451]
    Concretions of swallowed hair, fruit or vegetable fibers, or similar substances found in the alimentary canal.
  • Carbon Black [M0003366]
  • Chemicals and Ingredients [M0004012]
  • Chewing Gum [M0004036]
    A preparation of chicle, sometimes mixed with other plastic substances, sweetened and flavored. It is masticated usually for pleasure as a candy substitute but it sometimes acts as a vehicle for the administration of medication.
  • Coal [M0004658]
    A natural fuel formed by partial decomposition of vegetable matter under certain environmental conditions.
  • Coke [M0004731]
    A residue of coal, left after dry (destructive) distillation, used as a fuel.
  • Compost [M0448252]
  • Cosmic Dust [M0028926]
    Finely divided solid matter with particle sizes smaller than a micrometeorite, thus with diameters much smaller than a millimeter, moving in interplanetary space. (NASA Thesaurus, 1994)
  • Cotton Fiber [M0400803]
    A TEXTILE fiber obtained from the pappus (outside the SEEDS) of cotton plant (GOSSYPIUM). Inhalation of cotton fiber dust over a prolonged period can result in BYSSINOSIS.
  • Creosote [M0005306]
    A greasy substance with a smoky odor and burned taste created by high temperature treatment of BEECH and other WOOD; COAL TAR; or resin of the CREOSOTE BUSH. It contains CRESOLS and POLYCYCLIC AROMATIC HYDROCARBONS which are CARCINOGENS. It has been widely used as wood preservative and in PESTICIDES and had former use medicinally in DISINFECTANTS; LAXATIVES; and DERMATOLOGIC AGENTS.
  • Dust [M0006895]
    Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
  • Emulsifying Agents [M0007996]
    SURFACE-ACTIVE AGENTS that induce a dispersion of undissolved material throughout a liquid.
  • Fossil Fuels [M0008782]
    Any hydrocarbon deposit that may be used for fuel. Examples are petroleum, coal, and natural gas.
  • Fossils [M0008784]
    Remains, impressions, or traces of animals or plants of past geological times which have been preserved in the earth's crust.
  • Fresh Water [M0008841]
    Water containing no significant amounts of salts, such as water from RIVERS and lakes.
  • Ganja [M0003271]
  • Gas, Natural [M0008783]
  • Hair Balls [M0002452]
  • Hashish [M0003272]
  • Hemp [M0003274]
  • House Dust [M0006896]
    DUST mixture of many specific substances which may include fabric fibers, human SKIN particles, animal dander, MITES; BACTERIA; FUNGAL SPORES; food particles, and/or parts of COCKROACHES.
  • Humus [M0448251]
    Decomposed organic matter. It consists of numerous breakdown substances from plants including SUGARS; AMINO ACIDS; LIGNIN; FATS; and HUMIC SUBSTANCES.
  • Industrial Oils [M0011255]
    Oils which are used in industrial or commercial applications.
  • Kerosene [M0011978]
    A refined petroleum fraction used as a fuel as well as a solvent.
  • Lubricants [M0012714]
  • Manure [M0013016]
    Accumulations of solid or liquid animal excreta usually from stables and barnyards with or without litter material. Its chief application is as a fertilizer. (From Webster's 3d ed)
  • Micelles [M0013754]
    Particles consisting of aggregates of molecules held loosely together by secondary bonds. The surface of micelles are usually comprised of amphiphatic compounds that are oriented in a way that minimizes the energy of interaction between the micelle and its environment. Liquids that contain large numbers of suspended micelles are referred to as EMULSIONS.
  • Oral Tobacco [M0021606]
  • Particulate Matter [M0488311]
    Particles of any solid substance, generally under 30 microns in size, often noted as PM30. There is special concern with PM1 which can get down to PULMONARY ALVEOLI and induce MACROPHAGE ACTIVATION and PHAGOCYTOSIS leading to FOREIGN BODY REACTION and LUNG DISEASES.
  • Peat [M0020129]
    Decomposing SPHAGNUM.
  • Petroleum [M0016438]
    Naturally occurring complex liquid hydrocarbons which, after distillation, yield combustible fuels, petrochemicals, and lubricants.
  • Photons [M0026875]
    Discrete concentrations of energy, apparently massless elementary particles, that move at the speed of light. They are the unit or quantum of electromagnetic radiation. Photons are emitted when electrons move from one energy state to another. (From Hawley's Condensed Chemical Dictionary, 11th ed)
  • Plant Exudates [M0491660]
    Substances released by PLANTS such as PLANT GUMS and PLANT RESINS.
  • Plant Gums [M0491661]
    Polysaccharide gums from PLANTS.
  • Seawater [M0019579]
    The SALINE water of OCEANS AND SEAS that provides habitat for marine organisms.
  • Snow [M0019992]
    Frozen water crystals that fall from the ATMOSPHERE.
  • Snuff [M0021607]
  • Soil [M0020130]
    The loose surface material of the earth in which plants grow. (Webster, 3d ed)
  • Soot [M0003367]
    A dark powdery deposit of unburned fuel residues, composed mainly of amorphous CARBON and some HYDROCARBONS, that accumulates in chimneys, automobile mufflers and other surfaces exposed to smoke. It is the product of incomplete combustion of carbon-rich organic fuels in low oxygen conditions. It is sometimes called lampblack or carbon black and is used in INK, in rubber tires, and to prepare CARBON NANOTUBES.
  • Tobacco, Smokeless [M0021608]
    The powdered leaves of Nicotiana tabacum which are either inhaled through the nose, chewed, or stored in cheek pouches. It includes any product of tobacco that is not smoked.
  • Waste Products [M0022882]
    Debris resulting from a process that is of no further use to the system producing it. The concept includes materials discharged from or stored in a system in inert form as a by-product of vital activities. (From Webster's New Collegiate Dictionary, 1981)
  • Wood [M0023004]
    A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products.
  • Wool [M0023005]
    The hair of SHEEP or other animals that is used for weaving.