Inter-Phase Mass Transport: Modelling Of Air-Water Movement Of Organic Chemicals,
2010
Chulalongkorn University
Inter-Phase Mass Transport: Modelling Of Air-Water Movement Of Organic Chemicals, Darryl Hawker, Benjalak Karnchanasest
Applied Environmental Research
Air-water inter-phase mass transport of organic contaminants is often an important factor in their environmental fate and behaviour. The equilibrium situation is given by the Henry's Law Constant of the compound, but is rarely attained under environmental conditions. Approach to equilibrium is commonly described by the two-film theory involving molecular (Fickian) diffusion through thin stagnant films adjacent to the air-water interface. This theory is formulated in terms of mass transfer coefficients and fugacity transport parameters. Penetration and Surface Renewal Theories of mass transfer are also discussed. The importance of the Henry's Law Constant (H) is shown. Compounds such as phenol …
Durian Peel As Biosorbent For Removal Of Cadmium Ions From Aqueous Solution,
2010
Chulalongkorn University
Durian Peel As Biosorbent For Removal Of Cadmium Ions From Aqueous Solution, Wanna Saikaew, Pairat Kaewsarn
Applied Environmental Research
The ability of durian peel to remove Cd(II) ions from aqueous solution by biosorption was investigated. The sorption capacities at different solution pH, agitation speed, temperatures, initial cadmium ions concentrations and contact time were evaluated on a batch scale basis. At pH 5 and agitation speed 150 rpm, the cadmium ions removal reached at a maximum value. Increases in cadmium capacity with increasing temperature indicated endothermic nature of the biosorption process. The equilibrium was better described by the Langmuir isotherm model, with a maximum biosorption capacity of 18.55 mg g-1. The biosorption was relatively quick about 15 min to reach …
Trends In Temperature And Rainfall Extreme Changes In Bangkok Metropolitan Area,
2010
Chulalongkorn University
Trends In Temperature And Rainfall Extreme Changes In Bangkok Metropolitan Area, Sangchan Limjirakan, Atsamon Limsakul, Thavivongse Sriburi
Applied Environmental Research
Trends in temperature and rainfall extremes in the Bangkok Metropolitan area were analyzed on the basis of 3 high-quality series of daily data. A set of core climate extreme indices recommended by the WMOCCL/ CLIVAR Expert Team on Climate Change Detection, Monitoring and Indices (ETCCDMI) that measures many aspects of a changing climate including changes in intensity, frequency and duration of temperature and rainfall events was computed. Analysis of these indices provided clear evidence that different aspects of temperature and rainfall extremes in the Bangkok Metropolis exhibited significant changes during 1965- 2006. The region has been clearly warming over the …
Observed Changes In Daily Rainfall Extreme Along Thailand's Coastal Zones,
2010
Chulalongkorn University
Observed Changes In Daily Rainfall Extreme Along Thailand's Coastal Zones, Atsamon Limsakul, Sangchan Limjirakan, Thavivongse Sriburi
Applied Environmental Research
Trends in daily rainfall extreme along Thailand's coastal zones were examined, based on 28 high-quality series of daily rainfall data observed at the stations along the Andaman Sea Coast (ASC), the Gulf of Thailand's western coast (GoTw) and the Gulf of Thailand's eastern coast (GoTe). A set of core climate extreme indices recommended by the WMO-CCL/CLIVAR Expert Team on Climate Change Detection, Monitoring and Indices (ETCCDMI) that measures different aspects of rainfall extreme events such as wetness and dryness conditions, frequency and intensity rainfall events was calculated. Analysis of these indices revealed notable changes in rainfall extreme events along Thailand's …
Air Pollutant Emissions From The Burning Of Incense, Mosquito Coils, And Candles In A Small Experimental Chamber,
2010
Chulalongkorn University
Air Pollutant Emissions From The Burning Of Incense, Mosquito Coils, And Candles In A Small Experimental Chamber, Maneerat Ongwandee, Wilas Pipithakul
Applied Environmental Research
Combustion of incense, candles, and mosquito coils produces a variety of air pollutants, which may cause adverse health effects. This study was to characterize emissions of particulate matter (PM2.5) and carbon monoxide (CO) from the burning process of three selected types of emitters: incense, candles, and mosquito coils. The experiments were conducted in an aluminum foil-lined wall chamber with a dimension of 1x1x1 m3. Emission rates and emission factors of the test emitters were obtained from fitting time-dependent concentrations of the measured pollutants to a single-compartment mass balance model. The emission rates and emission factors of incense combustion were: PM2.5 …
Suppression Of Pyrite Oxidation With Iron-Phosphate Coating: Technique For Prevention Of Acid Mine Drainage,
2010
Chulalongkorn University
Suppression Of Pyrite Oxidation With Iron-Phosphate Coating: Technique For Prevention Of Acid Mine Drainage, Chantra Tongcumpou, Nipon Kongmak, Chakkaphan Sutthirat
Applied Environmental Research
This study was aimed to evaluate the feasibility of an iron-phosphate coating on pyrite surfaces for inhibiting an oxidation that is expected to prevent acid mine drainage (AMD). Prior to the experiments, pyrite samples (av. 425-850 µm in size) were mixed with sand (av. 1-2 mm in size) with a ratio of 1:4. Coating process was conducted in batch experiments that were treating with various concentrations of coating solutions, i.e., hydrogen peroxide (H2O2), sodium acetate (NaAc) and potassium dihydrogen phosphate (KH2PO4) at different contact times. Subsequently, leaching test was performed in columns (10 mm in diameter) using 0.145 M of …
Contents,
2010
University of Arkansas, Fayetteville
Contents, Discovery Editors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Letter From The Dean,
2010
University of Arkansas, Fayetteville
Letter From The Dean, Michael Vayda
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Instructions For Authors,
2010
University of Arkansas, Fayetteville
Instructions For Authors, Discovery Editors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Extractive Reserves,
2010
University of Richmond
Extractive Reserves, David S. Salisbury
Geography and the Environment Faculty Publications
Extractive reserves are territories dedicated to environmental protection and the sustainable use of nature resources by traditional populations. Reserves follow a traditional land tenure model based on individual family and communal property rights to common areas, such as forest trails used to extract or harvest nontimber forest products. Although the extractive reserve concept originates in the tropical forests of the Brazilian Amazon, reserves have also been created in aquatic, floodplain, and savanna landscapes throughout Brazil. There are now 50 extractive reserves covering more than 10 million hectares, an area larger than Portugal, and more continue to be created. Despite their …
Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 11 2010,
2010
University of Arkansas, Fayetteville
Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 11 2010, Several Authors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
A Values Framework For Students To Develop Thoughtful Attitudes About Citizenship And Stewardship,
2010
West Chester University of Pennsylvania
A Values Framework For Students To Develop Thoughtful Attitudes About Citizenship And Stewardship, Tim Lutz, Leeann Srogi
Earth & Space Sciences Faculty Publications
No abstract provided.
Female Humpback Whale (Megaptera Novaeangliae) Reproductive Class And Male-Female Interactions During The Breeding Season,
2010
Antioch University of New England
Female Humpback Whale (Megaptera Novaeangliae) Reproductive Class And Male-Female Interactions During The Breeding Season, Meagan E. Jones
Antioch University Dissertations & Theses
This study examined whether female reproductive class (i.e., presence or absence of a calf) in humpback whales (Megaptera novaeangliae) affects female behavior and male-female interactions on the Hawaiian breeding grounds. From 2003-2008, 295 female-calf groups (with or without a male escort) and 256 female no-calf groups (with a male) were observed. Forty-one female no-calf groups were confirmed male-female pairs by genetic sexing or photo-identification. Focal follows of 36 male-female pairs and 50 female-calf groups (29 escorted and 21 unescorted female-calf groups) were analyzed for time budget and movement estimates. Relative fluke size (fluke photogrammetry, n=30) and sighting histories …
Participatory Planning For A Promised Land: Citizen-Led, Comprehensive Land Use Planning In New York’S Adirondack Park,
2010
Antioch University of New England
Participatory Planning For A Promised Land: Citizen-Led, Comprehensive Land Use Planning In New York’S Adirondack Park, Ann Hope Ruzow Holland
Antioch University Dissertations & Theses
New York’s Adirondack Park is internationally recognized for its biological diversity. Greater in size than Yellowstone, Everglades, Glacier, and Grand Canyon National Park combined, the Adirondacks are the largest protected area within the Northern Appalachian/Acadian Eco-Region and within the contiguous United States. Ecologists, residents of the Park, and others are concerned about rapid land use change occurring within the borders of the Park. Almost half of the six million acres encompassed by the Park boundary is privately-owned, where 80% of land use decisions fall within the jurisdiction of local governments. The comprehensive planning process of one such local government, the …
Continuing Studies In Rio Grande Valley History,
2010
The University of Texas Rio Grande Valley
Continuing Studies In Rio Grande Valley History, Milo Kearney, Anthony K. Knopp, Antonio Zavaleta
Studies in Rio Grande Valley Regional History Series
Coming to the Valley, a poem / Vivian Kearney -- The ghosts of historic Palmito Hill Ranch / Antonio N. Zavaleta -- Against the odds : Dr. Juliet V. García, border educator / Manuel F. Medrano -- Lucile Champion's Brownsville : remembrances of another time / Frank Champion Murphy -- The restored courthouse and Judge Oscar Dancy / Anthony Knopp -- Francesco Voltaggio and the Port Isabel shrimp industry / Virginia Voltaggio Wood -- Mario Barrera : a border success story / Milo Kearney -- Selected figures from the Sierra/Valerio family history / Luciano Valerio Sierra and Amy Sierra Frazier …
