X
Search Filters
Format Format
Format Format
X
Sort by Item Count (A-Z)
Filter by Count
Journal Article (169888) 169888
Newspaper Article (13140) 13140
Publication (9012) 9012
Newsletter (2230) 2230
Trade Publication Article (1796) 1796
Magazine Article (1777) 1777
Conference Proceeding (1633) 1633
Patent (1294) 1294
Book Chapter (1284) 1284
Report (1249) 1249
Dissertation (482) 482
Book / eBook (469) 469
Book Review (405) 405
Web Resource (385) 385
Transcript (227) 227
Government Document (182) 182
Paper (122) 122
Journal / eJournal (49) 49
Data Set (27) 27
Reference (24) 24
Technical Report (20) 20
more...
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
nitrogen (108185) 108185
environmental sciences (37311) 37311
index medicus (36221) 36221
ecology (24617) 24617
analysis (24567) 24567
phosphorus (22131) 22131
carbon (21248) 21248
soils (16782) 16782
nutrients (15411) 15411
plant sciences (14897) 14897
biomass (14894) 14894
fertilizers (13832) 13832
life sciences (13601) 13601
agronomy (13036) 13036
growth (12948) 12948
air pollution (12923) 12923
soil science (12673) 12673
research (12382) 12382
ecosystems (12130) 12130
agriculture (11908) 11908
bacteria (11900) 11900
animals (11564) 11564
soil (11239) 11239
plants (11128) 11128
ammonia (11046) 11046
engineering, environmental (10874) 10874
water resources (10709) 10709
management (10118) 10118
denitrification (10010) 10010
nitrogen dioxide (9737) 9737
nitrates (9011) 9011
humans (8975) 8975
microbiology (8959) 8959
nitrification (8910) 8910
emissions (8884) 8884
nitrogen - metabolism (8713) 8713
environmental aspects (8682) 8682
temperature (8674) 8674
environment (8444) 8444
studies (8247) 8247
biotechnology & applied microbiology (8045) 8045
water quality (7969) 7969
water (7856) 7856
microorganisms (7173) 7173
stickstoff (7142) 7142
dynamics (7121) 7121
eutrophication (7051) 7051
nitrogen oxide (6904) 6904
chemistry (6847) 6847
marine & freshwater biology (6520) 6520
energy & fuels (6470) 6470
wheat (6234) 6234
pollutants (6229) 6229
climate change (6075) 6075
oxidation (6050) 6050
crops (6029) 6029
proteins (6022) 6022
fertilization (5938) 5938
yield (5928) 5928
nitrogen removal (5926) 5926
nitrate (5855) 5855
nitrogen - analysis (5831) 5831
ecosystem (5830) 5830
carbon dioxide (5822) 5822
wastewater treatment (5749) 5749
multidisciplinary sciences (5734) 5734
removal (5719) 5719
forestry (5657) 5657
male (5613) 5613
corn (5596) 5596
ammonium (5590) 5590
sediments (5586) 5586
soil science & conservation (5554) 5554
nitrogen oxides (5521) 5521
metabolism (5423) 5423
physiological aspects (5411) 5411
pollution (5391) 5391
quality (5378) 5378
decomposition (5286) 5286
geosciences, multidisciplinary (5273) 5273
organic chemistry (5248) 5248
photosynthesis (5245) 5245
vegetation (5239) 5239
female (5231) 5231
organic-matter (5131) 5131
nitrogen fixation (5097) 5097
sludge (5071) 5071
meteorology & atmospheric sciences (5027) 5027
productivity (4917) 4917
oxygen (4897) 4897
enzymes (4849) 4849
leaves (4812) 4812
rivers (4804) 4804
forests (4760) 4760
science (4709) 4709
fungi (4681) 4681
algae (4676) 4676
medicine (4549) 4549
environmental monitoring (4542) 4542
forest soils (4519) 4519
more...
Library Location Library Location
Library Location Library Location
X
Sort by Item Count (A-Z)
Filter by Count
Online Resources - Online (96) 96
Gerstein Science - Stacks (80) 80
Engineering & Comp. Sci. - Stacks (39) 39
Earth Sciences (Noranda) - Stacks (36) 36
UTL at Downsview - May be requested (32) 32
UofT at Mississauga - Stacks (23) 23
UofT at Scarborough - Stacks (17) 17
Collection Dvlpm't (Acquisitions) - Closed Orders (13) 13
Collection Dvlpm't (Acquisitions) - Vendor file (10) 10
Robarts - Stacks (10) 10
Robarts - Government Pubs (4) 4
Engineering & Comp. Sci. - May be requested in 6-10 wks (2) 2
Robarts - Course Reserves (2) 2
Aerospace - Stacks (1) 1
Chemistry (A D Allen) - Stacks (1) 1
Dentistry (Harry R Abbott) - Stacks (1) 1
Earth Sciences (Noranda) - Microtexts (1) 1
Faculty of Information - Stacks (1) 1
Physics - Stacks (1) 1
Royal Ontario Museum - Stacks (1) 1
St. Michael's College (John M. Kelly) - 2nd Floor (1) 1
St. Michael's College (John M. Kelly) - 3rd Floor (1) 1
Trinity College (John W Graham) - Stacks (1) 1
UofT at Mississauga - Not Returned (1) 1
Victoria University E.J. Pratt - Stacks (1) 1
more...
Language Language
Language Language
X
Sort by Item Count (A-Z)
Filter by Count
English (190837) 190837
Chinese (1585) 1585
French (553) 553
Portuguese (494) 494
Japanese (392) 392
German (381) 381
Spanish (295) 295
Korean (89) 89
Russian (76) 76
Persian (41) 41
Lithuanian (35) 35
Polish (32) 32
Turkish (25) 25
Czech (17) 17
Croatian (12) 12
Norwegian (12) 12
Vietnamese (11) 11
Swedish (10) 10
Arabic (9) 9
Danish (9) 9
Hebrew (9) 9
Italian (8) 8
Slovak (8) 8
Dutch (7) 7
Bulgarian (6) 6
Finnish (6) 6
Hungarian (6) 6
Indonesian (5) 5
Greek (4) 4
Slovenian (4) 4
Ukrainian (4) 4
Romanian (3) 3
Serbian (2) 2
Catalan (1) 1
Malay (1) 1
Urdu (1) 1
more...
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


2008, ISBN 0821377434, 91
The countries of Eastern Europe and Central Asia urgently need to accelerate the integration of environmental concerns into their agricultural and forestry... 
Environmental aspects | Forest management | Environmental policy | Agriculture and state | Europe, Eastern | Asia, Central | ORGANIC CROPS | POLLUTANTS | INCINERATORS | SPECIES | ENVIRONMENTAL POLICIES | SALINIZATION | LOGGING | RESOURCE CONSERVATION | AGRICULTURAL EXTENSION | ORGANIC FARMING | CROP PROTECTION | CROPS | NATIONAL INCOME | ECONOMIC ANALYSIS | FLOODING | ENVIRONMENTAL SUSTAINABILITY | SALINITY | ECOSYSTEMS | COTTON | CLIMATE | MARKET PRICES | ECONOMIC GROWTH | BIOLOGICAL PEST CONTROL | CONSERVATION TILLAGE | TREE PLANTING | SOIL CONSERVATION | AQUIFERS | NUTRIENT POLLUTION | POLLUTION | COMPARATIVE ADVANTAGE | PERSISTENT ORGANIC POLLUTANT | AGRICULTURAL PRACTICE | INPUT USE | ADVERSE EFFECTS | ENVIRONMENTAL | ENVIRONMENTAL CONDITIONS | NUTRIENT LEVELS | ECONOMIC IMPACT | FORESTRY RESEARCH | WATERSHED | CLIMATE CHANGE | AGRICULTURAL PRODUCTIVITY | LEGISLATION | GRAIN | DECISION MAKING | PRODUCTION PROCESSES | FOREST FIRES | CROP MIX | AGRICULTURAL COMMODITIES | AVIAN FLU | INTEGRATED PEST MANAGEMENT | NITROGEN FERTILIZER | ACIDIFICATION | PUBLIC GOODS | AGRICULTURAL AREA | WATERSHEDS | STREAMS | SEDIMENT | AGRICULTURAL OUTPUT | RISK MANAGEMENT | AGRICULTURE RESEARCH | FISH | MANURE MANAGEMENT | CARBON SEQUESTRATION | CENTRAL PLANNING | ENVIRONMENTAL BENEFITS | EMISSIONS | CROP ROTATION | EROSION | ENVIRONMENTAL IMPACTS | WETLAND | CROP | FORESTRY MANAGEMENT | AGRICULTURAL PRODUCTION | SUSTAINABLE PRODUCTION SYSTEMS | POULTRY | CEREAL YIELDS | INVENTORIES | DRINKING WATER | DOWNSTREAM WATER BODIES | BIOLOGICAL DIVERSITY | DRAINAGE | DRYLANDS | POULTRY PRODUCTION | FOREST MANAGEMENT | FARM PRODUCTS | FRESHWATER | EXTENSION PROGRAMS | ECONOMIC BENEFITS | FOREST LAND | RESOURCE ALLOCATION | GLOBAL WARMING | AGRICULTURAL LANDS | CONVENTION ON BIOLOGICAL DIVERSITY | LABOR COSTS | BENEFIT ANALYSIS | MANURE | ENVIRONMENTAL PROTECTION | ECONOMIC CONSEQUENCES | IMPORTS | SUSTAINABLE USE | UNITED NATIONS | LIVESTOCK | AGRICULTURAL SUBSIDIES | ENVIRONMENTAL ISSUES | SUSTAINABLE DEVELOPMENT | LAKES | FOOD SAFETY | PUBLIC EXPENDITURES | PESTICIDE | PESTICIDES | DRAINAGE SYSTEMS | INSTITUTIONAL CHANGE | CLEAN DEVELOPMENT MECHANISM | FAO | GRANT PROGRAMS | PESTICIDE APPLICATION | GRASSLANDS | BASINS | GENETIC RESOURCE | SOILS | AVIAN INFLUENZA | ECOSYSTEM DIVERSITY | LAND OWNERSHIP | LOCAL AUTHORITIES | PUBLIC PARTICIPATION | WATER RESOURCES | CHEMICAL FERTILIZERS | CROPPING | GRAIN HARVEST | SUSTAINABLE FORESTRY | ENVIRONMENTAL INFORMATION | GREENHOUSE GASES | INSECTS | GREENHOUSE GAS | ENVIRONMENTAL POLICY | FARMS | AGRICULTURE | BIOLOGICAL METHODS | ORGANIC PRODUCTION | FISH PRODUCTION | ENVIRONMENTAL TARGETS | PESTICIDE USE | SUSTAINABLE MANAGEMENT | AGRICULTURE ORGANIZATION | MITIGATION | NITROGEN | AGRICULTURAL BIODIVERSITY | MANURE PRODUCTION | EUTROPHICATION PROBLEMS | LAND DEGRADATION | RIVER | ENVIRONMENTAL IMPACT | INCOME | POLLUTERS | FLOOD CONTROL | SOIL EROSION | FORESTRY | FINANCIAL RESOURCES | PHOSPHORUS | SOIL MANAGEMENT | CARBON | ENVIRONMENTAL PROGRAMS | WETLAND RESTORATION | NASH | GENETIC RESOURCE CONSERVATION | BIOLOGICAL CONTROLS | ADAPTIVE RESEARCH | DISEASES | FARMLAND | GREENHOUSE GAS EMISSIONS | UPLAND AREAS | ENVIRONMENTAL MANAGEMENT | PESTS | WETLANDS | CROPLAND | MEAT PRODUCTION | BIODIVERSITY | DEFORESTATION | LIVESTOCK GRAZING | WATERSHED MANAGEMENT | TIMBER | CAPACITY BUILDING | IRRIGATION | NUTRIENT MANAGEMENT | EROSION CONTROL | IRRIGATION SYSTEMS | METHANE | RURAL DEVELOPMENT | RANGELANDS | HERBICIDES | MANURE STORAGE | POVERTY REDUCTION | EUTROPHICATION | FORESTS | TIMBER VOLUMES | BIOLOGICAL PEST CONTROL METHODS | SUSTAINABLE AGRICULTURE | BIOLOGICAL PEST | RUNOFF | AGRICULTURAL POLLUTION | CROP YIELDS | ADVERSE IMPACTS | FORESTRY PRACTICES | AGRICULTURAL LAND | DAIRY PRODUCTS | WATER USE EFFICIENCY | FARMERS | NATURAL RESOURCES | ACCESS TO INFORMATION | SOIL PROTECTION | POLICY INSTRUMENTS | AGRICULTURAL POLICY | POLLUTION CONTROL | FOREST | MEAT | PERVERSE INCENTIVES | AGRICULTURAL PRACTICES | PUBLIC AWARENESS | POLICY MAKERS | NUTRIENT RUNOFF | PRODUCTIVITY | RURAL COMMUNITIES | AGRICULTURAL DEVELOPMENT | AGRICULTURAL RESEARCH
eBook
1994, Journal of soil and water conservation, Volume 40, no. 2, supp., 94
Book
Journal Article
Journal Article
Nature, ISSN 0028-0836, 10/2012, Volume 490, Issue 7419, pp. 254 - 257
Journal Article
Nature Geoscience, ISSN 1752-0894, 06/2019, Volume 12, Issue 6, pp. 403 - 404
Nitrogen deposition in China has stabilized over the past decade, thanks to efficient regulation of fertilizer use, suggests an analysis of wet and dry... 
Nitrogen deposition | Nitrogen | Dry deposition | Wet and dry deposition | Deposition | Fertilizers
Journal Article
2001, 1st ed., ISBN 9780444504869, xviii, 520
"Nitrogen in the Environment: Sources, Problems, and Management" is the first volume to provide a holistic perspective and comprehensive treatment of nitrogen... 
Environmental aspects | Engrais azotés | Nitrogen fertilizers | Aspect de l'environnement | Chemistry
Book
2001, ISBN 9780821348635, xv, 157
This report serves as a guide to the utility and relevance of water quality prediction modeling. It draws upon examples from recent World Bank water resources... 
Water quality management | Mathematical models | Water quality | LAND USE | SURFACE WATER | WATER CHARACTERISTICS | WATER QUALITY MONITORING | EFFLUENT | WATER QUALITY | PROGRAMS | BOD | SUSTAINABLE WATER MANAGEMENT | SALINITY | HYDROLOGY | DISSOLVED OXYGEN | RIVER BASIN | STORM WATER | SPRING | WATER QUALITY MANAGEMENT | WATER QUALITY MONITORING PROGRAM | MANAGING WATER RESOURCES | WATER MANAGEMENT STRATEGIES | WATER MOVEMENT | WATER QUALITY PROBLEMS | OCEANS | WASTEWATER TREATMENT | COST SAVINGS | WATER LEVELS | RESERVOIRS | POLLUTION | WASTEWATER | WATER AVAILABILITY | FRESHWATER | NITROGEN | INDUSTRIAL PROCESSES | WATER MANAGEMENT MODEL | HYDRAULICS | WATER QUALITY OBJECTIVES | GROUNDWATER | SURFACE WATERS | PERMITS | WASTEWATER DISCHARGE | CALIBRATION | WATER QUALITY MODELING | WATER PROJECTS | HYDRODYNAMICS | SUSTAINABLE WATER | COPPER | DEMAND FOR WATER | WATER USES | ENVIRONMENTAL IMPACT | SURFACE WATER RESOURCES | WATER QUALITY MONITORING DATA | WATER USERS | ESTUARIES | POINT SOURCES | NATURAL RESOURCES | FLOW MEASUREMENTS | SURFACE RUNOFF | INTAKES | CURRENT VELOCITY | MODELING | WATER QUALITY DEGRADATION | WATER ALLOCATION | WATER SUPPLY | WASTEWATER TREATMENT SYSTEMS | LOW TIDE | LAKES | METEOROLOGY | CURRENTS | WATER QUALITY DATA | WASTE MANAGEMENT | WATER WITHDRAWALS | WATER RESOURCE | WATER MANAGEMENT | WASTEWATER MANAGEMENT | WATER RESOURCE MANAGEMENT | SEDIMENT | WATER USE | CONSTRUCTION | GRID SYSTEM | NUTRIENTS | USE OF WATER | QUALITY OF WATER | RIVERS | STRATIFICATION | AVAILABLE WATER | SURFACE WATER QUALITY
Book
2009, ISBN 0821378252, xxxiii, 160
This report reviews China's water scarcity situation, assesses the policy and institutional requirements for addressing it, and recommends key areas for... 
Water-supply | Water resources development | LOCAL COMMUNITIES | CENTRAL GOVERNMENT | COST RECOVERY POLICIES | RESOURCE CONSERVATION | WATER POLLUTION CONTROL | REMOTE SENSING | FRESHWATER RESOURCES | RIVER BASIN | WATER QUANTITY | SEAS | EFFICIENT WATER USE | SAFE DRINKING WATER | DEMAND MANAGEMENT | SEA | CHANNEL | GROUNDWATER MANAGEMENT | RENEWABLE WATER RESOURCES | URBAN AREAS | RECHARGE | ALLOCATION PROCESS | LITERS PER CAPITA PER DAY | WATER TABLES | ENVIRONMENTAL | WATER RECYCLING | SUSTAINABLE WATER | ENVIRONMENTAL IMPACT ASSESSMENT | SCIENCES | CLIMATE CHANGE | CIVIL SOCIETY | WATER UTILITIES | LEGISLATION | WATER TRANSFER | SURFACE RUNOFF | DECISION MAKING | WATER ALLOCATION | LOW-INCOME HOUSEHOLDS | MUNICIPAL SEWAGE | RAINFALL PATTERNS | POPULATION GROWTH | AGRICULTURAL WATER | WATER REUSE | WATER QUALITY DATA | SURFACE WATER BODIES | WATERSHEDS | RIVER BASINS | EXPLOITABLE WATER | ALLOCATION OF WATER | WATER MANAGEMENT SYSTEM | HOUSEHOLDS | AVAILABLE WATER | SURFACE WATER QUALITY | PIPED WATER | CANCER | ADEQUATE WATER SUPPLY | PROGRAMS | WATER ABSTRACTION | WATER RESOURCES MANAGEMENT | EVAPOTRANSPIRATION | WATER ALLOCATIONS | DRINKING WATER | CUBIC METER | WATER QUALITY MANAGEMENT | NONPOINT SOURCES | QUALITY STANDARDS | MUNICIPAL WATER SUPPLY | WATER REQUIREMENTS | ENVIRONMENTAL DEGRADATION | TARIFF STRUCTURE | VARIABLE RAINFALL | WATER AVAILABILITY | AQUATIC ECOSYSTEMS | TOWN | GAS | TOXIC CHEMICALS | DISTRIBUTION OF WATER | GLOBAL WARMING | WATER SOURCES | INTEGRATED WATER MANAGEMENT | WASTEWATER DISCHARGE CONTROL | WATER SUPPLY ACTIVITIES | GROUNDWATER WITHDRAWALS | ANNUAL BUDGETS | INFORMATION DISCLOSURE | WATER GOVERNANCE | WATER EXPLOITATION | SUSTAINABLE WATER USE | WATER USERS | WATER DEVELOPMENT | ENVIRONMENTAL PROTECTION | SMALL CITIES | SUSTAINABLE USE | POLLUTION CONTROL REQUIREMENTS | WATER SECTOR | LAKES | WATER SYSTEM | RESIDENTIAL CONSUMERS | WATER RESOURCE | ADEQUATE WATER | WATER PRICING | ECOSYSTEM | RIVER BASIN MANAGEMENT | ENVIRONMENTAL ASSESSMENTS | CLEAN-UP | GROUNDWATER DEPLETION | WATER SCARCITY | LOCAL AUTHORITIES | PUBLIC PARTICIPATION | SURFACE WATER | WATER RESOURCES | ALLOCATION OF WATER RIGHTS | ENVIRONMENTAL FLOWS | MUNICIPAL WASTEWATER | WATER SYSTEMS | BIOCHEMICAL OXYGEN DEMAND | WATER TARIFFS | WASTEWATER TREATMENT | RESERVOIRS | WATER MARKETS | NITROGEN | TRANSFER OF WATER RIGHTS | WATER MONITORING | WATER CONTENT | GROUNDWATER | PUBLIC HEALTH | WASTEWATER DISCHARGE | FOOD SECURITY | WATER SUPPLY SERVICES | MUNICIPAL WATER | SEWAGE TREATMENT | WATER CONSERVATION | WATER DEMAND | WATER USER | DEMAND FOR WATER | WATER USES | ENVIRONMENTAL IMPACT | WATER QUALITY INDEX | WATER POLLUTION | WASTE DISPOSAL | SUPPLY OF WATER | MORTALITY RATE | FLOOD CONTROL | COD | BASIN ECOSYSTEMS | WATER SUPPLY | CONCEPTUAL FRAMEWORK | LOCAL WATER | COST RECOVERY | SERVICE QUALITY | WASTEWATER SERVICES | WATER WITHDRAWALS | WATER MANAGEMENT | WATER RESOURCE MANAGEMENT | INDUSTRIAL WASTEWATER | INDUSTRIAL DISCHARGES | ENVIRONMENTAL MANAGEMENT | AGRICULTURAL WATER USE | URBAN WATER | PROTECTION OF WETLANDS | ACCESS TO SAFE DRINKING WATER | LAND USE | WATER MARKET | ENVIRONMENTAL QUALITY | IRRIGATION SYSTEMS | POLLUTION DISCHARGE | EFFLUENT | WATER LAW | WATER QUALITY | BOD | WATER TARIFF | NATIONAL WATER RESOURCES | ENFORCEABLE RIGHTS | WATER POLICY | PERSISTENT ORGANIC POLLUTANTS | WATER SHORTAGES | SCARCITY OF WATER | WATER CONSUMPTION | SMALL TOWNS | COST OF WATER | SCARCE WATER | PERMITS | TARIFF REFORM | WASTEWATER TREATMENT CAPACITY | SCARCE WATER RESOURCES | WATER ENTITLEMENTS | DESALINATION | QUALITY OF SERVICE | WATER CRISIS | EFFICIENT USE OF WATER | FARMERS | TRANSPARENCY | WATER RIGHTS | ACCESS TO INFORMATION | CHANNELS | WATER WITHDRAWAL | CONSUMPTIVE USE | MANAGEMENT OF WATER | IRRIGATION DISTRICT | POLLUTION CONTROL | WATER AFFAIRS | WATER SHORTAGE | QUOTAS | SUBSIDENCE | ANNUAL PRECIPITATION | WATER USE | CONSTRUCTION | URBAN WATER UTILITIES | SERVICE PROVIDERS | ALLOCATION SYSTEM | RIVERS | WATER SUPPLIES | AVAILABLE WATER RESOURCES
Book
SAE technical paper series, Volume 2007-01-4097.
A study has been undertaken on a boosted single cylinder research engine with direct injection of hydrogen. In order to reduce NOx emissions and tendency to... 
Exhaust gas recirculation (EGR) | Exhaust emissions | Nitrogen oxides | Hydrogen fuel | Fuel injection | Spark ignition engines | Alternative fuels
eJournal
SAE technical paper series, Volume 2009-01-1616.
The future worldwide emission regulations will request a drastic decrease of Diesel engine tailpipe emissions. Depending on the planned application and the... 
Electronic control systems | Exhaust gas recirculation (EGR) | Systems engineering | Nitrogen oxides | Diesel exhaust emissions control | Adaptive control | Electrical systems
eJournal