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Articles 6241 - 6270 of 25097
Full-Text Articles in Entire DC Network
Mass Production Of Entomopathogens In Less Industrialized Countries, David Grzywacz, Sean Moore, Belinda Luke, Sevgan Subramanian, David Moore, R. J. Rabindra
Mass Production Of Entomopathogens In Less Industrialized Countries, David Grzywacz, Sean Moore, Belinda Luke, Sevgan Subramanian, David Moore, R. J. Rabindra
All Peer-Reviewed Publications
Production of entomopathogenic agents as biopesticides, mainly fungal and some viral agents, has been established in many countries of Asia, South America and Africa using low technology approach, often by small to medium scale producers. While these reduced technology systems can generate effective products, these systems require the application of appropriate production methodology and rigorous monitoring if the appropriate quality and safety standards are to be reached. The role of governments in creating and maintaining a policy and regulatory environment that promotes local entomopathogen (EP) production, marketing and use remains important for success. The wider adoption of EP products in …
Integrated Pest Management Of Tuta Absoluta: Practical Implementations Across Different World Regions, Nicolas Desneux, Peng Han, Ramzi Mansour, Judit Arnó, Thierry Brévault, Mateus R. Campos, Anais Chailleux, Raul N.C. Guedes, Javad Karimi, Kouassi Arthur J. Konan, Anne Violette Lavoir, María G. Luna, Meritxell Perez-Hedo, Alberto Urbaneja, François J. Verheggen, Lucia Zappalà, Khaled Abbes, Abid Ali, Yunus Bayram, Fernando Cantor, Andrew G.S. Cuthbertson, Raf De Vis, Fedai Erler, Dnyaneshwar M. Firake, Khalid Haddi, M. Jamal Hajjar, Khasan Ismoilov, Coline C. Jaworski
Integrated Pest Management Of Tuta Absoluta: Practical Implementations Across Different World Regions, Nicolas Desneux, Peng Han, Ramzi Mansour, Judit Arnó, Thierry Brévault, Mateus R. Campos, Anais Chailleux, Raul N.C. Guedes, Javad Karimi, Kouassi Arthur J. Konan, Anne Violette Lavoir, María G. Luna, Meritxell Perez-Hedo, Alberto Urbaneja, François J. Verheggen, Lucia Zappalà, Khaled Abbes, Abid Ali, Yunus Bayram, Fernando Cantor, Andrew G.S. Cuthbertson, Raf De Vis, Fedai Erler, Dnyaneshwar M. Firake, Khalid Haddi, M. Jamal Hajjar, Khasan Ismoilov, Coline C. Jaworski
All Peer-Reviewed Publications
The South American tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), has invaded most Afro-Eurasian countries and is threatening worldwide tomato production. Various strategies have been developed and implemented to manage this pest. Here, we present a timely review on the up-to-date development and practical implementation of integrated pest management (IPM) programs for tomato crops across different world regions infested by T. absoluta. While insecticide resistance is a growing concern, biological control via releasing or conserving arthropod natural enemies and sex pheromone-based biotechnical control are the most successful management practices. Agronomic control-related research is an emerging area where the soil fertilization …
Impacts Of Plastic Pollution On A Pelagic Marine Mammal, The Northern Elephant Seal, Lauren M. Kashiwabara
Impacts Of Plastic Pollution On A Pelagic Marine Mammal, The Northern Elephant Seal, Lauren M. Kashiwabara
University of the Pacific Theses and Dissertations
As plastic pollution increases, top marine predators such as marine mammals are becoming increasingly susceptible to plastic particles and their additives. Plastic particles have been found in gastrointestinal tracts and scat of many marine mammals, and quantifying plastic pollution in those that are pelagic can provide insight into plastic pollution in mesopelagic ecosystems that are just beginning to be analyzed. Adapting well-developed laboratory techniques for microplastic (MP) isolation (i.e. density separation and chemical digestion), I isolated MPs from the scat of the deepest diving pinniped, the northern elephant seal (NES), and found that100% of scat samples (n=11) contained high counts …
Developing An Open Database To Support Forensic Investigation Of Disasters In South East Asia: Forinsea V1.0, Andres Payo, Raushan Arnhardt, Angelo Carlo R. Galindo, Pham Van Dong, Ma. Aileen Leah G. Guzman, Yasmin O. Hatta, Andrew Bevan, Jose Claro N. Monje
Developing An Open Database To Support Forensic Investigation Of Disasters In South East Asia: Forinsea V1.0, Andres Payo, Raushan Arnhardt, Angelo Carlo R. Galindo, Pham Van Dong, Ma. Aileen Leah G. Guzman, Yasmin O. Hatta, Andrew Bevan, Jose Claro N. Monje
Electronics, Computer, and Communications Engineering Faculty Publications
This article describes the development of a bespoke database, FORINSEA1.0, created to address the need for a systematic curation of information needed for the descriptive phase of the FORIN approach and its application to two study areas in the South East Asia region. FORINSEA1.0 allows researchers, for the first time, to explore and make use of subnational, geocoded data on major disasters triggered by natural hazards (flooding, earthquake, landslide and meteorological hazards) since 1945 until 2020 in the hydrological catchment of the Red River in Vietnam and the Marikina Basin in the Philippines. FORINSEA1.0 also contains relevant subnational information on …
Examining Soil Microbial Diversity In Transition Zones Between Corn Fields And Restored Prairie In The Upper Midwest, Anna M. Burns
Examining Soil Microbial Diversity In Transition Zones Between Corn Fields And Restored Prairie In The Upper Midwest, Anna M. Burns
Scripps Senior Theses
Prairies were once the largest ecosystem in North America, but agriculture and settlement has destroyed up to 99% of their pre-colonization extent. Prairie restorations are a strategy to recover the biodiversity and carbon sequestration functions of these grasslands, but typically occur in isolated strips between agricultural fields. My thesis analyzes how effective prairie restorations in the Liberty Prairie (northeastern Illinois) are at recovering the diversity of the prairie soil microbiome, focusing on verrucomicrobia abundance, alpha diversity, and soil physical characteristics.
Footprints On The Prairie: Examining The Interlocking Land Histories Of The Liberty Prairie Reserve, Illinois, Anna M. Burns
Footprints On The Prairie: Examining The Interlocking Land Histories Of The Liberty Prairie Reserve, Illinois, Anna M. Burns
Scripps Senior Theses
This thesis begins with the local history of the Liberty Prairie, the land where I conducted the ecological field-work that I later discuss in my second thesis on soil microbiome diversity (“Examining Soil Microbial Diversity in Transition Zones Between Corn Fields and Restored Prairie in the Upper Midwest"). I examine the Indigenous histories of the land, and the conflicts between the Bodwéwadmi and Euro-American settlers that resulted in the land being farmed for cattle, corn, and soy for over a hundred and fifty years. I then take a step back and analyze the broader historical contexts of Midwestern Corn Belt …
Negotiating The Bbnj Agreement : Exploring The Caribbean Community's Engagement From A Blue Economy Perspective With Special Focus On Environmental Impact Assessment Provisions, Kahlil Hassanali
World Maritime University Ph.D. Dissertations
The countries of the world are engaged in negotiations to develop an international legally binding instrument under the United Nations Convention on the Law of the Sea (UNCLOS) on the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction (The BBNJ agreement). In the BBNJ process, the member States of the Caribbean Community (CARICOM) participate as a regional bloc and have been actively involved in the negotiations. This thesis applies an action research methodology along with a mix of methods, including the reading of primary, secondary and grey literature; document content analysis; interviews and informal conversations; …
A Systematic, Holistic And Transdisciplinary Energy Management Framework To Promote Environmentally Sustainable Shipyards, Seyedvahid Vakili
A Systematic, Holistic And Transdisciplinary Energy Management Framework To Promote Environmentally Sustainable Shipyards, Seyedvahid Vakili
World Maritime University Ph.D. Dissertations
Shipbuilding is an energy-intensive industry and has negative environmental impacts. Given the contribution of the production phase to ships' air emissions throughout their life cycle, there is no international regulation to monitor, control or reduce air emissions during this phase. However, it may be covered by State’s Nationally Determined Contributions (NDC) under the Paris Agreement. Achieving a zero-emission shipping industry requires a broader, holistic, systematic and "cradle to grave" approach that takes into account the life cycle of the ship, from production to scrapping.
The aim of the study is to develop to a holistic and systematic approach to reducing …
Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit, Pioneer Technical Services, Inc.
Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit, Pioneer Technical Services, Inc.
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Healthcare Management Strategies For Achieving Sustainable Departmental Productivity Improvements, Timothy Hargrove
Healthcare Management Strategies For Achieving Sustainable Departmental Productivity Improvements, Timothy Hargrove
Walden Dissertations and Doctoral Studies
Healthcare organizations’ leaders' lack of strategies to effectively deploy and monitor departments’ productivity goals affect overall organizations’ performance. Healthcare leaders who fail to deploy and monitor departmental productivity strategies effectively are limited to enhancing healthcare organizations’ performance outcomes. Grounded in transformational leadership theory, the purpose of this qualitative multiple case study was to explore strategies healthcare organizations’ leaders use to effectively identify, deploy, and monitor departments’ goals for improving their overall organization's performance. The participants were 20 healthcare leaders who successfully demonstrated success in improving their organizations’ departmental-specific productivity performance. Data were collected using semistructured interviews and a review of …
Effects Of Indoor Air Pollutants On Childhood Asthma: African American Parents’ Perspective, Marcia Maureen Haughton Lewis
Effects Of Indoor Air Pollutants On Childhood Asthma: African American Parents’ Perspective, Marcia Maureen Haughton Lewis
Walden Dissertations and Doctoral Studies
AbstractIndoor air pollution has been implicated in many chronic health conditions, including childhood asthma, which is more prevalent among African American children. Children are more susceptible than adults to the effects of exposure to indoor air pollution; however, many parents may not be aware of the polluting impacts of products in their homes and are inadvertently placing their families at risk for adverse health outcomes. Understanding parents’ perceptions and experiences is essential for planning and developing educational programs and interventions for improving indoor environment management as part of asthma management in children. This descriptive phenomenological study aimed to explore parents’ …
Evaluation Of Tidal Fresh Forest Distributions And Tropical Storm Impacts Using Sentinel-2 Msi Imagery, Galen Costomiris
Evaluation Of Tidal Fresh Forest Distributions And Tropical Storm Impacts Using Sentinel-2 Msi Imagery, Galen Costomiris
College of Graduate Studies: Theses & Dissertations
Situated in the transitional zone between non-tidal forests upstream and tidal fresh marshes downstream, tidal fresh forests occupy a unique and increasingly precarious habitat. The threat of intensifying anthropogenic climate change, compounded by the effects of historical logging and drainage alterations, could reduce the extent of this valuable ecosystem. The overall goals of this project were to identify forest communities present in the Altamaha tidal fresh forest; develop satellite imagery-based classifications of tidal fresh forest and tidal marsh vegetation along the Altamaha River, Georgia; and to quantify changes in vegetation distribution in the aftermath of hurricanes Matthew and Irma. Based …
Inter-Population Variation And Phenotypic Plasticity In Kairomone Use By A Poly-Specialist Spider-Eating Predator, Ana M. Cerveira, Robert R. Jackson
Inter-Population Variation And Phenotypic Plasticity In Kairomone Use By A Poly-Specialist Spider-Eating Predator, Ana M. Cerveira, Robert R. Jackson
All Peer-Reviewed Publications
Previous research on Cyrba algerina (Araneae, Salticidae) has shown this jumping spider expresses predatory specialisation with respect to spiders as prey as well as inter-population variation in responsiveness to prey-spider odour. However, this earlier research pertained to a single prey species (Oecobius machadoi) and only field-collected C. algerina individuals were tested. Here we extend the previous research by using laboratory-reared, as well as field-collected, individuals of C. algerina and also by using another prey-spider species, Zelotes thorelli, as well as O. machadoi. Two localities in Portugal are considered, Sintra where C. algerina and both prey species are abundant and Tavira …
Red Spruce Ecological Sites, Ecological States, And Restoration Pathways Quantified Through Soil Organic Carbon, James Edward Leonard
Red Spruce Ecological Sites, Ecological States, And Restoration Pathways Quantified Through Soil Organic Carbon, James Edward Leonard
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tools used by agencies and organizations like the Forest Service (FS), the Natural Resource Conservation Service (NRCS), the Nature Conservancy (TNC), and the Central Appalachian Spruce Restoration Initiative (CASRI) to help guide red spruce (Picea rubens) ecosystem restoration within Central Appalachia could better address outcomes from management practices implemented in terms of soil organic carbon (SOC) stock changes. These high-elevation landscapes have a natural capacity to produce diverse ecosystem services that affect humans, animals, and plants alike. Ecological site descriptions (ESD) are an important tool used to restore impacted landscapes and provide detailed management prescriptions specific to red spruce ecological …
Using Drones To Evaluate Revegetation Success On Natural Gas Pipelines, Anthony Nelson Mesa
Using Drones To Evaluate Revegetation Success On Natural Gas Pipelines, Anthony Nelson Mesa
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Appalachian region of the United States has significant growth in the production of natural gas. Developing the infrastructure required for this resource creates significant disturbances across the landscape, as both well pads and transportation pipelines must be created in this mountainous terrain. Midstream infrastructure, which includes pipeline rights-of-way and associated infrastructure, can cause significant environmental degradation, especially in the form of sedimentation. The introduction of this non-point source pollutant can be detrimental to freshwater ecosystems found throughout this region. This ecological risk has necessitated the enactment of regulations related to midstream infrastructure development. Weekly, inspectors travel afoot along pipeline …
A Pivotal New Approach To Groundwater Quality Assessment, M. L. Cherry, T. Gilmore, T. Messer, Y. Li, J. Westrop
A Pivotal New Approach To Groundwater Quality Assessment, M. L. Cherry, T. Gilmore, T. Messer, Y. Li, J. Westrop
School of Natural Resources: Faculty Publications
No abstract provided.
Plague Risk In The Western United States Over Seven Decades Of Environmental Change, Colin J. Carlson, Sarah N. Bevins, Boris V. Schmid
Plague Risk In The Western United States Over Seven Decades Of Environmental Change, Colin J. Carlson, Sarah N. Bevins, Boris V. Schmid
United States Department of Agriculture Wildlife Services: Staff Publications
After several pandemics over the last two millennia, the wildlife reservoirs of plague (Yersinia pestis) now persist around the world, including in the western United States. Routine surveillance in this region has generated comprehensive records of human cases and animal seroprevalence, creating a unique opportunity to test how plague reservoirs are responding to environmental change. Here, we test whether animal and human data suggest that plague reservoirs and spillover risk have shifted since 1950. To do so, we develop a new method for detecting the impact of climate change on infectious disease distributions, capable of disentangling long-term trends (signal) and …
Wild Pig Removal Reduces Pathogenic Bacteria In Low-Order Streams, Sara A. Bolds, B. Graeme Lockaby, Latif Kalin, Stephen S. Ditchkoff, Mark D. Smith, Kurt Vercauteren
Wild Pig Removal Reduces Pathogenic Bacteria In Low-Order Streams, Sara A. Bolds, B. Graeme Lockaby, Latif Kalin, Stephen S. Ditchkoff, Mark D. Smith, Kurt Vercauteren
United States Department of Agriculture Wildlife Services: Staff Publications
Invasive wild pig populations have undergone enormous increases in the United States and particularly across the southern U.S. in recent years. High fecundity rates and abilities to adapt quickly to varied habitats have enabled pig populations to become entrenched and difficult to eliminate. The pigs cause many negative impacts on ecosystems including degradation of water quality through infusion of fecal contamination and other non-point source pollutants. Our goal was to determine the effects of pig removal on water quality in streams that were known to be significantly polluted by pig activity Bolds (J Environ Qual 50: 441–453, 2021). We compared …
A Model For Leveraging Animal Movement To Understand Spatio-Temporal Disease Dynamics, Mark Q. Wilber, Anni Yang, Raoul Boughton, Kezia R. Manlove, Ryan S. Miller, Kim M. Pepin, George Wittemyer
A Model For Leveraging Animal Movement To Understand Spatio-Temporal Disease Dynamics, Mark Q. Wilber, Anni Yang, Raoul Boughton, Kezia R. Manlove, Ryan S. Miller, Kim M. Pepin, George Wittemyer
United States Department of Agriculture Wildlife Services: Staff Publications
The ongoing explosion of fine-resolution movement data in animal systems provides a unique opportunity to empirically quantify spatial, temporal and individual variation in transmission risk and improve our ability to forecast disease outbreaks. However, we lack a generalizable model that can leverage movement data to quantify transmission risk and how it affects pathogen invasion and persistence on heterogeneous landscapes. We developed a flexible model ‘Movement-driven modelling of spatio-temporal infection risk’ (MoveSTIR) that leverages diverse data on animal movement to derive metrics of direct and indirect contact by decomposing transmission into constituent processes of contact formation and duration and pathogen deposition …
Review Of Loon Lessons: Uncommon Encounters With The Great Northern Diver, By James D. Paruk, Kristin Bianchini
Review Of Loon Lessons: Uncommon Encounters With The Great Northern Diver, By James D. Paruk, Kristin Bianchini
The Prairie Naturalist
Gavia immer Brunnich (Common Loon) is a bird that has captivated bird watchers, wildlife enthusiasts, campers, cottagers, and others interested in the natural world for centuries. The loon also features prominently in Native American mythology. For many, the loon symbolizes the wildness of the north, and it is often used as a sentinel of lake health. Indeed, the Common Loon has inspired a wealth of literature, both scientific and popular, describing this species’ ecology, behavior, and fitness in the face of environmental changes. To this literature, Loon Lessons: Uncommon Encounters with the Great Northern Diver adds a complete and accurate …
Combining Green Metrics And Digital Twins For Sustainability Planning And Governance Of Smart Buildings And Cities, Casey R. Corrado, Suzanne M. Delong, Emily G. Holt, Edward Y. Hua, Andreas Tolk
Combining Green Metrics And Digital Twins For Sustainability Planning And Governance Of Smart Buildings And Cities, Casey R. Corrado, Suzanne M. Delong, Emily G. Holt, Edward Y. Hua, Andreas Tolk
VMASC Publications
Creating a more sustainable world will require a coordinated effort to address the rise of social, economic, and environmental concerns resulting from the continuous growth of cities. Supporting planners with tools to address them is pivotal, and sustainability is one of the main objectives. Modeling and simulation augmenting digital twins can play an important role to implement these tools. Although various green best practices have been utilized over time and there are related attempts at measuring green success, works in the published literature tend to focus on addressing a single problem (e.g., energy efficiency), and a comprehensive approach that takes …
Re-Storying Grant Creek: A Case Study Of Relational Dynamics On A Degraded Montana Stream, Seamus Rucci Land
Re-Storying Grant Creek: A Case Study Of Relational Dynamics On A Degraded Montana Stream, Seamus Rucci Land
Graduate Student Theses, Dissertations, & Professional Papers
The UN Decade on Ecosystem Restoration began in 2021, and after a history of contentious ethical debates, ecological restoration is increasingly portrayed as a viable framework for combating environmental degradation and supporting more healthy and stable social-ecological systems. The proposed ecological restoration of Grant Creek, a degraded stream near Missoula, Montana, offers an opportunity to connect a restoration site to the broader, rapidly growing field of restoration practice. It also allows the opportunity to forward the ‘relational turn’ proposed by many in the sustainability sciences as an ontological and methodological means to move beyond positivist portrayals of social-ecological systems, which …
Disentangling The Complex Evolutionary History Of Invasive Russian Thistle: Phylogenetic Relationships, The Role Of Hybridization, And Public Engagement, Deva Raj Khanal
Disentangling The Complex Evolutionary History Of Invasive Russian Thistle: Phylogenetic Relationships, The Role Of Hybridization, And Public Engagement, Deva Raj Khanal
Electronic Theses and Dissertations
Invasive species are forces of environmental, economic, and social change with detrimental impacts on ecosystems, commerce, agriculture, and human health. However, we still have a poor understanding of the processes that could be driving invasive potential. Hybridization may contribute to the establishment and spread of invasive lineages, as it may enhance genetic variation and facilitate rapid adaptation. Focusing on Russian thistle (Salsola tragus s.l., family Amaranthaceae) and closely related species, my thesis aims to clarify phylogenetic relationships and investigate how hybridization has shaped the invasion dynamics of these lineages. Known as one of the fastest plant invasions in the United …
A Post-Pneumonia Epizootic Evaluation Of The Rapid City, South Dakota Bighorn Sheep Herd, Amanda N. Ensrud
A Post-Pneumonia Epizootic Evaluation Of The Rapid City, South Dakota Bighorn Sheep Herd, Amanda N. Ensrud
Electronic Theses and Dissertations
Pneumonia is a major factor affecting populations of free-ranging bighorn sheep (Ovis canadensis) across western North America. Pneumonia can occur in large-scale epizootics, during which greater than half of the population typically dies. After these epizootics, surviving ewes continue to conceive and bear lambs. However, lamb recruitment may remain low due to periodic or annual pneumonia outbreaks causing high lamb mortality rates, sometimes greater than 90%. Our study focused on the Rapid City, South Dakota bighorn sheep (BHS) herd that has recorded pneumonia-induced population decline since 2009. The first objective was to improve lamb health and survival by identifying and …
Knowledge, Attitude And Practices On Potato Pest Management Of Ethnic Farmers In Southern Shan State, Myanmar, Pyae Pa Pa Aung
Knowledge, Attitude And Practices On Potato Pest Management Of Ethnic Farmers In Southern Shan State, Myanmar, Pyae Pa Pa Aung
Chulalongkorn University Theses and Dissertations (Chula ETD)
Potato is cultivated as the main tuber crop which is essential for ethnic farmers’ household income in Southern Shan State, Myanmar. Most ethnic farmers use chemical pesticides widely to enhance crop yield and to control pests in the farm. The use of chemical pesticides could lead to a series of health impacts of the farmers and environmental issues. The main aim of the study is to explore farmers’ knowledge, attitude and current farm practices on pest management in potato production. The participants of 100 farmers were chosen from each village with a cluster and purposive sampling technique using structured questionnaires …
The Potential Risk And Occupational Exposure Of Pesticides Among Rice Farmers In Delta Ayeyarwady Division, Myanmar, Moe Thu Khin
The Potential Risk And Occupational Exposure Of Pesticides Among Rice Farmers In Delta Ayeyarwady Division, Myanmar, Moe Thu Khin
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study aims to assess the potential risk and occupational exposure of pesticides among rice farmers in the Delta Ayeyarwady Region, Myanmar. A cross-sectional study was carried out with 454 rice farmers from March-April 2022. Data collection was done through face-to-face interviews used with a semi-structured questionnaire. The study showed that the mean age of farmers was 44.36 years old while the range was 16 and 74 years old. Rice farmers' average weight (± standard deviation) was 56.86 (± 7.30) kg. In this study, over two-thirds of the rice farmers (77 %) had a moderate level of knowledge regarding environmental …
Degradation Of Di (2-Ethylhexyl) Phthalate By Marine Sediment Bacteria And Identification Of Key Degraders And Degradative Genes, Ritu Ningthoujam
Degradation Of Di (2-Ethylhexyl) Phthalate By Marine Sediment Bacteria And Identification Of Key Degraders And Degradative Genes, Ritu Ningthoujam
Chulalongkorn University Theses and Dissertations (Chula ETD)
Di (2-ethylhexyl) phthalate (DEHP) is a toxic phthalate ester (PAE) plasticizer that is predominantly detected in marine sediment and biota. DEHP degradation by bacteria from several environments has been studied, but very little is known about marine sediment bacteria that can degrade DEHP and other PAEs. Therefore, in this study, we enriched a bacterial consortium C10 that can degrade four PAEs of varying alkyl chain lengths (DEHP, dibutyl phthalate, diethyl phthalate, and dimethyl phthalate ; separately and as a mixture) from marine sediment. The major bacterial genera in C10 during the degradation of the PAEs were Glutamicibacter, Ochrobactrum, Pseudomonas, Bacillus, …
Strengthening Local Government To Enhance Flood Risk Management:A Case Study Of Xay District, Lao Pdr., Souksamay Manhmanyvong
Strengthening Local Government To Enhance Flood Risk Management:A Case Study Of Xay District, Lao Pdr., Souksamay Manhmanyvong
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Xay district of Lao PDR is vulnerable to flooding because around 80% of the total geographic area consists of mountains, rivers, and tributaries. While the district has limited coping capability. Therefore, strengthening the local government to enhance flood risk management was investigated in the present study with the following four objectives. Desk research, on-site observation, in-depth interviews, and expert focus group were used for data collection. The study found that local people always suffer from flooding in the Xay district almost every year because the district locates on a high mountain surrounded by canals and a high population along …
ความสัมพันธ์ระหว่างประสิทธิภาพการใช้น้ำกับปัจจัยทางสิ่งแวดล้อมของพรรณไม้ในเมืองในพื้นที่สีเขียวเขตเมือง บริเวณจุฬาลงกรณ์มหาวิทยาลัย, นิศาชล กุลสิริลักษณ์
ความสัมพันธ์ระหว่างประสิทธิภาพการใช้น้ำกับปัจจัยทางสิ่งแวดล้อมของพรรณไม้ในเมืองในพื้นที่สีเขียวเขตเมือง บริเวณจุฬาลงกรณ์มหาวิทยาลัย, นิศาชล กุลสิริลักษณ์
Chulalongkorn University Theses and Dissertations (Chula ETD)
ปัจจุบันมีการพัฒนาพื้นที่สีเขียวในเมืองเพื่อเป็นที่พักผ่อนหย่อนใจและให้บริการเชิงนิเวศอย่างต่อเนื่อง ทำให้เกิดพื้นที่สีเขียวที่มีอายุการก่อตั้งแตกต่างกัน อันประกอบด้วยพืชพรรณและไม้ต้นที่มีขนาดและอายุต่างกัน ซึ่งอาจมีการตอบสนองต่อการเปลี่ยนแปลงของปัจจัยสิ่งแวดล้อมต่างกัน ได้แก่ สภาพอากาศและความชื้นในดิน การทราบรูปแบบการตอบสนองของต้นไม้ในสวนสาธารณะที่มีอายุนับตั้งแต่ก่อตั้งต่างกันอาจช่วยเป็นข้อมูลในการดูแลต้นไม้รวมถึงการเลือกพันธุ์ไม้ที่เหมาะสมต่อวัตถุประสงค์ของพื้นที่สีเขียวให้พื้นที่นั้นมีประสิทธิภาพมากยิ่งขึ้น งานวิจัยนี้จึงสนใจศึกษาประสิทธิภาพการใช้น้ำ ซึ่งหมายถึงปริมาณคาร์บอนที่สังเคราะห์ได้ต่อหน่วยหนึ่งการใช้น้ำ หรือน้ำที่รดให้แก่ต้นไม้ โดยศึกษาเบื้องต้นในระดับใบ คำนวณจากอัตราส่วนระหว่างการสังเคราะห์ด้วยแสงต่อการคายน้ำของใบของจามจุรี ชมพูพันธุ์ทิพย์ และปีบ ในสองพื้นที่ที่มีอายุในการก่อตั้งแตกต่างกัน ได้แก่ พื้นที่สีเขียวบริเวณจุฬาลงกรณ์มหาวิทยาลัย (CU) ซึ่งมีอายุในการก่อตั้งมากกว่า 80 ปี และ อุทยาน 100 ปี จุฬาลงกรณ์มหาวิทยาลัย (CU100) ซึ่งเป็นสวนสาธารณะแห่งใหม่ที่เพิ่งสร้างได้ประมาณ 5 ปี โดยมีวัตถุประสงค์เพื่อศึกษาการแลกเปลี่ยนแก๊สและประสิทธิภาพการใช้น้ำ และความสัมพันธ์ของค่าเหล่านี้กับปัจจัยทางสิ่งแวดล้อมของต้นไม้ทั้ง 3 ชนิดที่กล่าวมา ผลการศึกษาพบว่า จามจุรีและชมพูพันธุ์ทิพย์ในพื้นที่ CU100 มีอัตราการแลกเปลี่ยนแก๊สสูงกว่าพื้นที่ CU ในฤดูฝน อาจเป็นเพราะต้นไม้ในพื้นที่ CU มีอายุมากกว่า ประกอบด้วยขนาดต้นไม้ใหญ่กว่า และดินในพื้นที่ CU มีน้ำขัง ทำให้ค่าดังกล่าวต่ำกว่าพื้นที่ CU100 แต่ไม่พบความแตกต่างของค่าดังกล่าวของปีบใน 2 พื้นที่ ซึ่งอาจเป็นเพราะปีบเป็นไม้ที่ทนต่อสภาพแวดล้อมที่ต่างกันได้ดี รูปแบบความสัมพันธ์ระหว่างการแลกเปลี่ยนแก๊สและประสิทธิภาพการใช้น้ำกับภาวะพร่องความดันไอระหว่างใบกับอากาศเป็นไปตามรูปแบบสมการลอการิทึมในต้นไม้ทั้ง 3 ชนิด และมีรูปแบบการตอบสนองของค่าประสิทธิภาพการใช้น้ำนั้นเหมือนกันในสองพื้นที่ แม้จะมีค่าต่างกันระหว่างพื้นที่ในจามจุรีและชมพูพันธุ์ทิพย์ก็ตาม แสดงให้เห็นว่าต้นไม้ทั้ง 3 ชนิดอาจมีการปรับตัวให้เข้ากับสภาพแวดล้อมมาในช่วงเวลาหนึ่งแล้วจึงมีรูปแบบตอบสนองต่อสภาพอากาศที่คล้ายคลึงกันของสองพื้นที่ ดังนั้น หากจะพิจารณาถึงชนิดไม้ที่จะเลือกมาปลูกในพื้นที่สีเขียวแห่งใหม่ อาจพิจารณาเพียงค่าประสิทธิภาพการใช้น้ำที่สูง กล่าวคือให้ผลผลิตเชิงคาร์บอนได้มากต่อหน่วยปริมาณน้ำที่รดเท่ากัน โดยต้นไม้เหล่านี้สามารถปรับตัวให้เข้ากับสภาพแวดล้อมได้เมื่อให้เวลาเติบโตสักระยะ
Assessment Of Emissions From Cement Plants Using Aermod Modeling, Atef I. Abdel-Gawad, Mahmoud Noureldeen, Hamada Mahmaoud, Asmaa S. Hamouda
Assessment Of Emissions From Cement Plants Using Aermod Modeling, Atef I. Abdel-Gawad, Mahmoud Noureldeen, Hamada Mahmaoud, Asmaa S. Hamouda
Applied Environmental Research
Coal combustion generates many gases and emissions which are harmful to public health and the environment. So, it is necessary to assess the health risks for the people living in the nearby cement plants that use coal as a fuel. In this article, a health risk assessment HRA was carried out concerning the air emissions from a cement plant in the heavy industry area located at Beni Suef governorate - Egypt. The article handles the assessment of the health risks for pollutants classified as non-carcinogenic i.e. sulfur dioxide - mercury and the health risks for pollutants classified as carcinogenic i.e. …