AI SearchAir pollutant emission and its influence on visibility in Kathmandu Valley (Record no. 3501)
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| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162018.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 050499s1994 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10063985 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. EV-94-26 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Shrestha, Shyam |
| 245 10 - TITLE STATEMENT | |
| Title | Air pollutant emission and its influence on visibility in Kathmandu Valley |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1994 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 110 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-94-26 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in the partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources & Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1994 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | As visibility is directly related to air pollution, visibility data were analyzed for the period of 1975-1993 in light of meteorological factors to detect the air quality trend in Kathmandu Valley. It can be concluded that the visibility in Kathmandu Valley is deteriorating most likely due to man made activities i.e air pollution emissions. Meteorological influence on annual visibility trend are not paramount. Detailed emission inventory as a function of time and space has also been made for 1992/93 to estimate the contribution of different sources on air quality deterioration in the valley. Fuelwood/biomass combustion for Total Suspended Particulate (TSP) and Carbon monoxide (CO), automobiles for Nitrogen Oxides (NOJ and Hydrocarbons (HC), and coal combustion in brick and cement industries for Sulfur Dioxide (S02) are the major sources of emission. Estimation of emission for past year (1984/85) and a future year (2002/03) were also made. It shows that per capita emission of TSP is decreasing whereas Nitrogen Oxides (NOx) and Sulfur Dioxide (S02) are increasing considerably. Annual visibility trend shows strong negative correlation with air pollution emissions, specially Sulfur Dioxide (S02) and Nitrogen Oxides (NOJ. Among the visibility reducing species, sulfate and nitrate particle are expected to be the major contributor in the visibility change in the valley and the particulate concentration in Kathmandu Valley might exceed WHO standard most of the time in recent years. Much higher particulate concentration can be expected in urban centers. As the air quality of the valley is deteriorating rapidly, it is an urgent need to establish emission regulations and control strategies. This study provides an input to the modelling work, an important tool for air quality management, and source reduction strategies. Since actual measurement of air pollution concentration are unavailable, this type of study is appropriate to detect the air quality trend and to estimate sources contribution in most of the cities of the developing countries. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Pollutants |
| Geographic subdivision | Kathmandu Valley |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Weihan, Su, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Reutergardh, Lars Bertil, |
| Relator term | Ecamination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shrestha, Ram M., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Government of Austria, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-94-26 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B15791">http://203.159.5.9/ait-thesis/detail.php?q=B15791</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10063985 |
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| a | 240409 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003047957 |
| CREATED | CREATED : 1994-05-16 |
| RECORD Id | RECORD # : i10060510 |
| LPATRON | LPATRON : 0 |
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| Barcode | Barcode : 30050004250394 |
| CREATED | CREATED : 1994-05-16 |
| RECORD Id | RECORD # : i10060522 |
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| Barcode | Barcode : 30050160055363 |
| CREATED | CREATED : 2016-11-05 |
| RECORD Id | RECORD # : i12975564 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 10.00 | AIT Thesis no. EV-94-26 | 30050003047957 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 10.00 | AIT Thesis no. EV-94-26 | 30050004250394 | 17/08/2026 | 2 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no. EV-94-26 | 30050160055363 | 17/08/2026 | 17/08/2026 | 40-Archives |