Environment terminology · MLC-0121
Environment terms: P (2,670)
- Protein renaturationThe process of restoring the activity and quaternary structure of a native polypeptide through folding and...
- Protein secondary structureThe level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of...
- Protein secretionVectorial transport of proteins across a cell membrane to the extracellular environment.
- Protein sequence alterationAny subcellular or molecular event, process, or condition that produces a divergence from the usual wild-type...
- Protein splicingExcision of internal protein sequences (inteins) of a precursor protein, coupled with ligation of the...
- Protein synthesisProtein synthesis is the group of processes that are involved in generation of mature protein molecules...
- Protein synthesis inhibitorCompounds which inhibit the synthesis of proteins. They are usually antibiotics or toxins.
- Protein transportThe process of moving proteins from one cellular compartment (including extracellular) to another by various...
- Protein truncationTermination of the translation process at a stop codon.
- Protein turnoverThe normal "downside" of protein steady state metabolism in cells, involving conjugation, transport...
- Protein-carbohydrate interactionProtein-Carbohydrate Interaction is a molecular interaction between protein and carbohydrate molecules.
- Proteinogenic amino acidsAmino acids are a set of 20 different molecules used to build proteins. Proteins consist of one or more...
- Protein-protein interactionTemporary, non-covalent binding between protein molecules. Protein-protein interactions occur as a result of...
- Proteins1. Complex nitrogenous organic compounds of high molecular weight made of amino acids; essential for growth...
- Proteins by functionProteins organized by the functions they perform in a living organism.
- ProteinuriaAn excess of serum proteins in the urine; also called albuminuria
- ProteobacteriaA phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the...
- ProteoglycansGlycoproteins which have a very high polysaccharide content.
- ProteolysisProteolysis typically involves hydrolysis of specific peptide bond(s) with formation of smaller polypeptides...
- Proteolysis regulationBiochemical and cellular mechanisms involved in Regulation of Proteolysis ensure that hydrolysis of one or...
- Proteolytic processingGenerally irreversible, Proteolytic Processing involves removal of peptide segments from proteins, usually...
- Proteomics1. Study of the function of all expressed proteins.
- Proteus infection(Infection with a member of) a genus of Gram-negative, oxidase-negative, but catalase- and nitrase-positive...
- Protocol1. Describes the exact procedures to be followed with respect to sample receipt and handling, analytical...
- Proton1. The nucleus of a hydrogen atom; a positively charged nuclear particle with a mass of one; see neutron.
- Proton pump interactionProton Pump Interaction consists of temporary non-covalent binding of a molecule through intermolecular...
- Proton-transfer-reaction mass spectrometry1. Method of determining concentration of a component in a gas mixture by attaching to it a proton, the...
- ProtoplastA membrane-bound cell from which the outer wall has been partially or completely removed. The term often is...
- Protozoa1. One-celled animals that are larger and more complex than bacteria.
- Protozoal infectionsInfections with unicellular organisms of the subkingdom PROTOZOA.
- Protozoan organismOne of a large, diverse group of unicellular (one-celled) animals.
- PROTRACThe software system which tracks work through the Product Review process.
- Protracted exposureContinuous or intermittent exposure to radiation over a long period of time.
- Protracted radiation exposureContinuous or intermittent exposure to radiation over a long period of time.
- Proven emission control system1. Emission control component or system (and fuel metering systems) that have completed full durability...
- Provide accounting policies, guidance & trainingActivities to develop and maintain sound financial management and accounting policies and procedures; improve...
- Provide budget & finance policies, guidance & trainingActivities to develop and maintain sound budget and finance policies and procedures; improve existing...
- Provide compensation managementActivities to provide compensation management.
- Provide contracts & IAG accountingProvide accounting services for contracts and interagency agreements.
- Provide core internal accountingProvide accounting services for core Agency activities, including salaries and expenses, operations, and...
- Provide employee development & performance management policies, guidance & trainingActivities to establish and maintain Agency-specific policies, procedures, guidance, and training for...
- Provide grants accountingProvide accounting services for EPA grant activities.
- Provide payments policies, guidance & trainingActivities to establish and maintain payment policies, procedures, guidance, and training to increase...
- Provide payroll & expense reimbursement managementActivities to manage Agency expense reimbursement policies.
- Provide personnel acquisition policies, guidance & trainingActivities to establish and maintain Agency-specific policies, procedures, guidance, and training for...
- Provide public & agency web accessOperations of the Agency's public and intranet web sites (Agency Webmaster).
- Provide public information, education & outreachAll other activities that provide information to the public and Agency stakeholders, including support by the...
- Provide safety, health & environmental servicesActivities to establish and develop internal safety, health and environmental management program policies...
- Provide skills & competency managementActivities to capture and maintain information related to the skills and competencies of Agency Personnel.
- Proving ringDevice used to measure static force based on the linear relationship between stress and strain in an elastic...
- Provisional indirect cost rateA temporary rate established for a given period to permit interim reimbursement of indirect costs pending the...
- Proximate cause1. The cause that induces the effect through direct exposure. Compare to an indirect cause.
- Proximate stressor1. The stressor that directly induces the biological effect of concern. This is equivalent to causal agent...
- PrPSc proteinsAbnormal isoform of prion proteins ( PRIONS) resulting from a posttranslational modification of the cellular...
- Prussian blueA blue paste or liquid (often on a paper like carbon paper) used to show a contact area. Used to determine if...
- Psammolittoral beachThe sandy area where the lake and the land constantly interact.
- P-saturationThe amount of phosphorus in soil divided by the amount of phosphorus that can be fixed by the soil.
- PSCPoint Source Category (PSC) is an industrial category of facilities that are grouped by specific industrial...
- PseudomonasA genus of gram-negative, motile, non-spore-forming, rod-shaped bacteria in the phylum Proteobacteria.
- Pseudomonas fluorescensPseudomonas fluorescens is a gram negative, rod shaped bacterium, which can be used to control soil pathogens...
- Pseudomonas fluorescens A506Some bacteria normally found on plant surfaces initiate formation of frost, which damages crops. However, if...
- Pseudoreplication1. The treatment of multiple samples from the same sample unit as replicates for statistical purposes. For...
- PseudosectionA cross section showing the distribution of a geophysical property, such as seismic travel time, from which...
- Psidium cattleianumStrawberry guava, also called purple guava and pineapple guava, is a shrub or small tree reaching up to 15...
- Psilocybe cubensisA psychedelic mushroom
- PsittacosisInfection with Chlamydophila psittaci (formerly Chlamydia psittaci), transmitted to man by inhalation of...
- Psychiatric disordersA disorder characterized by behavioral and/or psychological abnormalities, often accompanied by physical...
- Psychogenic illnessThis syndrome has been defined as a group of symptoms that develop in an individual (or a group of...
- Psychological factorsPsychological, organizational, and personal stressors that could produce symptoms similar to poor indoor air...
- PsychologyThe science dealing with the study of mental processes and behavior in man and animals.
- PsychosisAny major mental disorder characterized by derangement of the personality and loss of contact with reality
- Psychosocial factorsPsychological, organizational, and personal stressors that could produce symptoms similar to those caused by...
- PsychotropicExerting an effect upon the mind; capable of modifying mental activity
- PsychrophileMicroorganism that lives and grows between temperatures of 54°F and 64°F (12°C and 18°C).
- PsychrophilicOperationally between 54°F and 64°F (12°C and 18°C).
- Psychrophilic bacteriaBacteria that live or thrive at low temperatures.
- Psychrophilic fungusFungi that live or thrive at low temperatures.
- Psychrotrophic bacteriaBacteria that can grow at low temperatures but grow optimally between 15° and 20°C.
- p-tert-ButylbenzaldehydeSubstance p-tert-butylbenzaldehyde, also identified as 4-(1,1-dimethylethyl)benzaldehyde, CAS No. 939-97-9.
- p-tert-Butylbenzoic AcidSubstance p-tert-butylbenzoic acid, also identified as 4-(1,1-dimethylethyl)benzoic acid, CAS No. 98-73-7.
- p-tert-ButyltolueneSubstance p-tert-butyltoluene, also identified as 1-(1,1-dimethylethyl)-4-methylbenzene, CAS No. 98-51-1.
- p-Type SemiconductorA semiconductor in which holes carry the current; produced by doping an intrinsic semiconductor with an...
- PubertyTime of first estrus in sows, usually occurring at 6 mo. of age.
- Public1. The term "the public" is used in the Policy in the broadest sense, meaning the general population of the...
- Public accessThe servers that make up EPA's Internet presence. These servers contain and share information that is...
- Public administrationThe Public Administration sector consists of establishments of federal, state, and local government agencies...
- Public affairsPublic Affairs involves the exchange of information and communication between the Federal Government...
- Public benefit fundA pool of resources typically created by levying a small fee or surcharge on customers' electricity rates...
- Public benefit fund for clean energy supplyPublic benefits funds (PBFs), or clean energy funds, are typically created by levying a small fee or...
- Public benefit fund for energy efficiencyPublic benefit funds (PBFs) for energy efficiency are a pool of resources used by states to invest in energy...
- Public benefit funds for clean energy supplyPublic benefits funds (PBFs), or clean energy funds, are typically created by levying a small fee or...
- Public benefit funds for energy efficiencyPublic benefit funds (PBFs) for energy efficiency are a pool of resources used by states to invest in energy...
- Public benefits fundsA pool of resources typically created by levying a small fee or surcharge on customers' electricity rates...
- Public cloudThe cloud infrastructure is provisioned for open use by the general public. It may be owned, managed, and...
- Public comment period1. The time allowed for the members of an affected community to express views and concerns regarding an...
- Public comment trackingPublic Comment Tracking involves the activities of soliciting, maintaining, and responding to public comments...
- Public contactA person who can respond to questions from the public about the form.
- Public contact siteLand with a high potential for contact by the public. This includes, but is not limited to, public parks...
- Public dataThe data available to the general public through the NEI public website.
- Public domainLand owned, controlled, or heretofore disposed of by the U.S. government.
- Public drinking water system by EPA typeEPA has defined three types of public water systems: Community Water System (CWS): A public water system that...
- Public goodsGoods that are nonrival in consumption and nonexclusive.
- Public goods creation & managementPublic Goods Creation and Management includes the construction, manufacturing, administration, and/or...
- Public HealthOrganized measures to prevent disease, promote health and prolong life.
- Public health advisoriesFish consumption advisories are applicable to sport fish and are recommended consumption levels to protect...
- Public health approachRegulatory and voluntary focus on effective and feasible risk management actions at the national and...
- Public health authorityAgency or authority of the United States, a state, a territory, a political subdivision of a state or...
- Public health contextThe incidence, prevalence, and severity of diseases in communities or populations and the factors that...
- Public health emergencyA natural disaster, act of terrorism, or disease outbreak.
- Public health surveillance1. The ongoing, systematic collection, analysis, and interpretation of health data. This activity also...
- Public hearing1. A formal meeting wherein EPA officials hear the public's views and concerns about an EPA action or...
- Public housing1. Housing subsidized by tax funds, usually intended for low income persons or families.
- Public information & outreachPrograms and projects that provide general information to the public either through ongoing services or in...
- Public involvement1. The opportunity for maximum feasible participation by citizens in rulemaking, decision making and land use...
- Public key infrastructureEnables users of a basically unsecure public network, such as the Internet, to securely and privately...
- Public land1. The part of the U.S. public domain to which title is still vested in the federal government and that is...
- Public notice1. Notification by EPA informing the public of Agency actions such as the issuance of a draft permit or...
- Public notice publishedPublication in the local newspaper of the availability of documents for public review, such as the...
- Public notification1. An advisory that USEPA or the state requires a water system to distribute to affected consumers when the...
- Public receptor1. Offsite residences, institutions (e.g., schools, hospitals), industrial, commercial, and office buildings...
- Public records1. In general usage, records accumulated by Government agencies.
- Public recreation areaPublicly- or privately-owned area used for recreation by individuals not evaluated as workers in the resident...
- Public rental motor vehicleVehicle that is owned or controlled primarily for the purpose of short-term rental or extended-term leasing...
- Public right of way1. Any sidewalk, planting strip, alley, street, or pathway, improved or unimproved, that is dedicated to...
- Public roadRoad or street owned and maintained by a public authority and open to public travel. (23 U.S.C. 101(a).
- Public service announcementA brief presentation of a message by a non-profit organization via broadcast media. The term "public service"...
- Public service waste disposalProvision of landfill waste disposal services to individual members of the general public, publicly-owned...
- Public trust doctrineA legal principle derived from English Common Law which holds that the waters of a state are a public...
- Public utility commissionState agency that regulates utilities. In some areas known as Public Service Commission (PSC).
- Public vessel1. As defined by section 311(a)(4) of the CWA, means a vessel owned or bareboat-chartered and operated by the...
- Public voluntary initiativeNon-mandatory collaboration open to all stakeholders to accomplish a goal
- Public water supplyWater distributed from a public water system.
- Public water system1. Any water system that regularly supplies piped water to the public for consumption, serving at least an...
- Public water system IDUniquely identifies a Public Water System.
- Public Water System ID (PWSID), see Public water system ID
- Public water system inventoryThe count of public water system facilities serving a specific geographic area.
- Public water system projectOne or more activities that are eligible for assistance under section 603(c) of the Federal Water Pollution...
- Public water system status (PWS activity)A value that verifies that the water system and the water system facility are active.
- Public water useWater supplied from a public-water supply and used for such purposes as firefighting, street washing, and...
- Publication rotogravure pressRotogravure press used for publication rotogravure printing. A publication rotogravure press may include one...
- Publication rotogravure printingProduction, on a rotogravure press, of the following saleable paper products:(1) Catalogues, including mail...
- Publication rotogravure printing pressAny number of rotogravure printing units capable of printing simultaneously on the same continuous web or...
- PUBLICATIONSDocuments printed or otherwise produced for wide distribution inside or outside an agency. Include annual...
- Publicly owned treatment works1. A waste-treatment works owned by a state, unit of local government, or Indian tribe, usually designed to...
- Publicly-owned treatment workPublicly-owned treatment works (POTWs) are public wastewater treatment facilities that receive wastewater...
- PubMedThe National Library of Medicine's repository of research publication abstracts.
- PubMed Central1. National Library of Medicine's electronic archive of more than 3 million full-text journal articles...
- PubMed Central IDA unique identifier assigned to papers submitted to PubMed Central.
- Puccinia graminisP. graminis f. sp. tritici. is a macrocyclic heteroecious rust with uredinia and telia occurring on wheat...
- PuccinialesThe order of fungi that cause rust diseases in plants
- Pueraria montana var. lobataKudzu ia a climbing, semi-woody, perennial vine in the pea family. Deciduous leaves are alternate and...
- Puerto RicoThe drainage and associated waters within the Commonwealth of Puerto Rico. Puerto Rico. Area = 3480 sq.mi.
- Puget SoundThe drainage within the United States that discharges into: (a) Puget Sound and the Straits of Georgia and of...
- PugmillA chamber in which water and soil are mixed together. Typically mixing is aided by an internal mechanical...
- Pull plug pit1. A series of one or more pits where manure is collected until it is utilized or transferred to a storage or...
- PullbackIn horizontal directional drilling, the stage of drilling a surface-to-surface well in which the well...
- PulletA laying hen before it lays its first egg.
- PulmonaryPertaining to the lungs
- Pulmonary agentChemical that causes severe irritation or swelling of the respiratory tract (lining of the nose, throat, and...
- Pulmonary alveoliSmall polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal bronchioles...
- Pulmonary blood flowBlood flow in the lungs
- Pulmonary emphysema1. A subcategory of chronic obstructive pulmonary disease (COPD). It occurs in people who smoke and suffer...
- Pulmonary function(Function) pertaining to the lungs.
- Pulmonary gas exchangeThe exchange of oxgen and carbon dioxide between alveolar air and pulmonary capillary blood that occurs...
- Pulp and paper millIndustrial plants that are classified by the Department of Commerce under North American Industry...
- Pulp millManufacturing plant that uses substances containing plant fibers such as wood chips to make fiberboard which...
- Pulp mill lime kiln1. Unit used to calcine lime mud, which consists primarily of calcium carbonate, into quicklime, which is...
- Pulp washing systemAll equipment used to wash pulp and separate spent cooking chemicals following the digester system and prior...
- Pulping lineGroup of equipment arranged in series such that the wood chips are digested and the resulting pulp progresses...
- Pulping liquor recovery furnaceChemical and heat recovery boiler used in pulp and paper manufacturing
- Pulping systemAll process equipment, beginning with the digester system, and up to and including the last piece of pulp...
- Pulse field gel electrophoresisPulsed-field gel electrophoresis (PFGE) is a method used to separate high molecular weight linear DNA...
- Pulse jet fabric filterType of filtration system that uses a short duration pulse of compressed air injected on the "clean side" of...
- Pulse-width-modulated wave inverterType of power inverter that produce a high quality (nearly sinusoidal) voltage, at minimum current harmonics...
- Pulverized coal boilerEGU in which pulverized coal is introduced into an air stream that carries the coal to the combustion chamber...
- Pulverized coal-fired steam generating unitSteam generating unit in which pulverized coal is introduced into an air stream that carries the coal to the...
- Pulverized Coal/RDF Mixed Fuel-Fired CombustorCombustor that fires coal and RDF simultaneously, in which pulverized coal is introduced into an air stream...
- Pulverized Coal/Refuse-Derived Fuel Mixed Fuel-Fired Combustor1. Combustor that fires coal and refuse-derived fuel simultaneously, in which pulverized coal is introduced...
- PulvinusA mass of large thin-walled cells forming a cushionlike swelling at the base of petiole or petiolule and...
- PumpDevice used to raise pressure, drive, or increase flow of liquid streams in closed or open conduits.
- Pump sealAny seal on a pump drive shaft used to keep methane and/or carbon dioxide containing light liquids from...
- Pump seal emissionHydrocarbon gas released from the seal face between the pump internal chamber and the atmosphere.
- Pump sprayPackaging system in which the product ingredients are expelled only while a pumping action is applied to a...
- Pump spray systemPackaging system in which the product ingredients are expelled only while a pumping action is applied to a...
- Pumpage dataA measure of the volume of water per unit of time discharged from a well, or collected within an intake...
- Pump-and-treat methodA common method for cleaning up groundwater contaminated with dissolved chemicals, including industrial...
- Pumped storageType of hydropower that works like a battery, pumping water from a lower reservoir to an upper reservoir for...
- Pumped storage hydroelectric plantPlant that usually generates electric energy during peak load periods by using water previously pumped into...
- Pumping station1. Mechanical devices installed in sewer or water systems or other liquid-carrying pipelines that move the...
- Pumping test1. A test that is conducted to determine aquifer or well characteristics. A test made by pumping a well for a...
- Pumping water levelThe vertical distance in feet from the centerline of the pump discharge to the level of the free pool while...
- Punk knotAn overgrown knot filled with old conk material or the beginning of a new conk, also called blind conk...
- PupariationFormation of the puparium.
- PupariumThe hardened integume within which the pupa is formed from the skin of the last larval instar, as in dipteran...
- PurchaseTo procure through a contract (including work assignments, delivery orders, task orders, GSA schedules...
- Purchase cardA government charge card used for small purchases not requiring competition or other detailed requirements of...
- Purchase cards, see Purchase card
- PurchaserAny panel producer, importer, fabricator, distributor, or retailer that acquires composite wood products...
- PurchasingAct of and the function of responsibility for the acquisition of equipment, materials, supplies, and...
- Pure substanceA material in which, as nearly as can be determined, there is only one chemical substance
- PurgeCoating material expelled from the spray system when clearing it.
- Purge and trap (device)Analytical technique (device) used to isolate volatile (purgeable) organics by stripping the compounds from...
- Purge captureCapture of purge solvent and materials into a closed collection system immediately after purging the system...
- Purge gasGas introduced between a flare's water seal and a flare's tip to prevent oxygen infiltration (backflow) into...
- Purge materialCoating and associated cleaning solvent materials expelled from the spray system during the process of...
- Purge/Clean OperationProcess of flushing paint out and cleaning the spray lines when changing colors or to remove undesired...
- PurgingRemoving stagnant air or water from sampling zone or equipment prior to sample collection.
- Purine synthesis inhibitionPurine Synthesis Inhibition involves interference with, or restraint of, the activities of biologic molecules...
- Purple sulfur bacteriaBacteria which oxidize inorganic sulfur compounds to use as electron donors in fixating carbon dioxide in...
- Purposive sampleInstances appropriately selected to answer different evaluation questions, on various systematic bases, such...
- Purveyor, water(purr-VAY-or) An agency or person that supplies water (usually potable water).
- PushPush" (or "server-push") is the delivery of information on the Web that appears to be initiated by the...
- Push outA type of road drainage structure that drains topographic lows or saddles on a road by directing runoff away...
- Push outs, see Push out
- Pushing1. Process of removing the coke from the coke oven at the end of the coking cycle. Pushing begins when coke...
- Putrefaction1. (PEW-truh-FACK-shun) Biological decomposition of organic matter, with the production of ill-smelling and...
- PutrescibleAble to rot quickly enough to cause odors and attract flies.
- P-Value1. In testing a hypothesis, the probability of a type I error (false positive). The probability that the...
- PVC pipe1. A hollow plastic pipe generally used for plumbing in home construction.
- PycnidiumA rounded or flask-shaped asexual fruiting body containing conidia or spores found in certain fungi, e.g...
- Pycnocline1. The zone or boundary where the fresher water layer on the surface meets the saltier water layer below. The...
- Pyranometer1. A pyranometer is an instrument for measuring the solar reflectance, or albedo, of materials. The American...
- PyrethrinsPyrethrins are naturally-occurring coµmpounds with insecticidal properties that are found in pyrethrum...
- Pyrethroids1. Pyrethroids are manufactured chemicals that are very similar in structure to the pyrethrins, but are often...
- PyrheliometerInstrument used for measuring direct beam solar irradiance. Uses an aperture of 5.7° to transcribe the solar...
- Pyrimidine synthesis inhibitionPyrimidine Synthesis Inhibition involves interference with, or restraint of, the activities of biologic...
- PyrimidinesA family of 6-membered heterocyclic compounds occurring in nature in a wide variety of forms. They include...
- Pyrite1. Iron sulfide mineral (FeS). Forms silvery to brassy metallic cubes or masses. Common in many rocks. Known...
- PyrogenSubstances capable of increasing body temperature and cause fever and may be used for fever therapy. They may...
- Pyrogenic infectionAn infection caused by pus-producing organisms.
- Pyrolysis1. Decomposition of a chemical by extreme heat.
- Pyrolysis/Combustion Unit1. Unit that produces gases, liquids, or solids through the heating of MSW, and the gases, liquids, or solids...
- Pyrometallurgical treatmentHigh temperature processing used in metal casting.
- Pyrrolizidine alkaloidsA group of alkaloids, characterized by a nitrogen-containing necine, occurring mainly in plants of the...
- Pyrrolizidine alkaloids poisoningPyrrolizidine alkaloid intoxication is caused by consumption of plant material containing these alkaloids...
2,670 of 29,894 terms in Environment terminology (MLC-0121). Request the full dataset.