Nitrous OxideSoilSoil MicrobiologySoil PollutantsAnesthetics, InhalationAnesthesia, InhalationNitric Oxide SynthaseDenitrificationIsofluraneXenonMethyl EthersAnesthetics, CombinedBody PatterningNitric Oxide Synthase Type IIAnesthesia, GeneralPositron-Emission TomographyNitritesOxidesOtoacoustic Emissions, SpontaneousNitrificationNitratesFentanylNitrogenEnfluraneAnesthesia, DentalFertilizersMontanaGas ScavengersNitric Oxide Synthase Type IIIOxidoreductasesNitrogen OxidesAnestheticsPropofolGreenhouse EffectMethane5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseCarbon DioxideAnesthesia Recovery PeriodVehicle EmissionsAnesthetics, IntravenousNitric Oxide Synthase Type ISoil Pollutants, RadioactiveAgricultureAcetyleneFluorodeoxyglucose F18AlfentanilPreanesthetic MedicationAnalgesics, Non-NarcoticOxygenRadiopharmaceuticalsAnesthesia, IntravenousNitrogen CycleEnvironmental MonitoringEthersZinc OxidePseudomonasEcosystemBacteriaGasesManureOligochaetaTomography, Emission-Computed, Single-PhotonIris PlantDose-Response Relationship, DrugTreesAtmosphereThiopentalCarbonNitrite ReductasesBiodegradation, EnvironmentalOxidation-ReductionTime FactorsAnesthesiaBrainAir PollutantsNeuromuscular Nondepolarizing AgentsConscious SedationCerebrovascular CirculationMethoxyfluranePhylogenyDNA, RibosomalIntubation, IntratrachealHypnosis, AnestheticMolecular Sequence DataAerobiosisNG-Nitroarginine Methyl EsterPlant RootsEuphoriaEthyl ChlorideAmmoniaBiomassFluorine RadioisotopesCrops, AgriculturalThiamylalMonitoring, IntraoperativeSequence Analysis, DNAIntraoperative PeriodAtracuriumDNA, BacterialSpectrometry, Fluorescence