Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (811)
- Environmental Studies (650)
- Physical Sciences and Mathematics (396)
- Environmental Sciences (335)
- Arts and Humanities (305)
-
- Life Sciences (252)
- Anthropology (217)
- Geography (194)
- History (171)
- Public Affairs, Public Policy and Public Administration (146)
- Education (144)
- Sociology (129)
- American Studies (128)
- History of Art, Architecture, and Archaeology (126)
- Archaeological Anthropology (125)
- Sustainability (124)
- United States History (122)
- Environmental Policy (118)
- Other American Studies (117)
- Other Arts and Humanities (117)
- American Material Culture (115)
- Other History of Art, Architecture, and Archaeology (115)
- Environmental Education (111)
- Medicine and Health Sciences (85)
- Other Environmental Sciences (83)
- Physical and Environmental Geography (80)
- Engineering (79)
- Environmental Indicators and Impact Assessment (79)
- Communication (78)
- International and Area Studies (74)
- Institution
-
- Stephen F. Austin State University (119)
- University of Nebraska - Lincoln (72)
- University of Montana (69)
- SIT Graduate Institute/SIT Study Abroad (51)
- Wofford College (46)
-
- University of Louisville (42)
- Montclair State University (37)
- Ohio University (36)
- Claremont Colleges (33)
- Gettysburg College (32)
- Portland State University (30)
- San Jose State University (29)
- Lindenwood University (28)
- University of Richmond (28)
- Utah State University (28)
- University of New Hampshire (27)
- Chulalongkorn University (25)
- Fordham University (25)
- Wilfrid Laurier University (24)
- University of South Florida (21)
- Bates College (20)
- City University of New York (CUNY) (20)
- Edith Cowan University (20)
- University of New Mexico (19)
- Valparaiso University (19)
- Virginia Commonwealth University (18)
- Clark University (17)
- Universitas Indonesia (17)
- Boise State University (15)
- Cal Poly Humboldt (14)
- Keyword
-
- Archaeology (116)
- Texas (102)
- Climate change (61)
- Environment (59)
- Sustainability (59)
-
- Envirome (40)
- Sustain (40)
- Agriculture (19)
- Conservation (19)
- Climate Change (15)
- Pollution (14)
- Renewable energy (14)
- Bexar County (12)
- Caddo (12)
- Conservation of natural resources -- Economic aspects (12)
- Environmental economics (12)
- GIS (12)
- Gettysburg College (12)
- Hydrology (12)
- Newspaper (12)
- Climate (11)
- Community (11)
- History (11)
- United States (11)
- Center for Southeast Asian Studies (10)
- College of Arts & Sciences Themes (10)
- Environmental justice (10)
- Flooding (10)
- Policy (10)
- Solar energy (10)
- Publication
-
- Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State (115)
- Independent Study Project (ISP) Collection (49)
- Sustain Magazine (40)
- Department of Environmental Studies: Undergraduate Student Theses (28)
- Journal of International and Global Studies (28)
-
- The Fierce Green Fire (28)
- Graduate Student Theses, Dissertations, & Professional Papers (26)
- United States National Park Service: Publications (26)
- Applied Environmental Research (24)
- Student Theses 2015-Present (24)
- Theses and Dissertations (20)
- Theses and Dissertations (Comprehensive) (18)
- Midwest Social Sciences Journal (17)
- Forest Collaborative Research (16)
- Department of Earth and Environmental Studies Faculty Scholarship and Creative Works (15)
- OHIO News Articles Archive (15)
- University of Montana Course Syllabi (15)
- Theses & ETDs (14)
- All Forum Articles (13)
- Faculty Publications (13)
- Community Engaged Research Reports (12)
- Honors Theses (12)
- Master's Theses (12)
- Commencement Programs (11)
- Electronic Theses and Dissertations (11)
- Environmental Studies Faculty Publications (11)
- Landscapes: the Journal of the International Centre for Landscape and Language (11)
- Media Guides (11)
- Pomona Senior Theses (11)
- Sustainability and Social Justice (11)
- Publication Type
- File Type
Articles 1711 - 1740 of 1772
Full-Text Articles in Entire DC Network
Campus-Wide Student Learning Assessment: Campus Student Learning Outcomes Academic Year 2018-2019, University Of Minnesota-Morris
Campus-Wide Student Learning Assessment: Campus Student Learning Outcomes Academic Year 2018-2019, University Of Minnesota-Morris
Institutional Effectiveness and Research Reports
No abstract provided.
Impact Of Selected Infrared Wavelengths On Inactivation Of Microbes On Rough Rice, Rebecca L. Bowie, Griffiths Atungulu, Abass Oduola, Shantae Wilson, Zeinab Mohammadi-Shad
Impact Of Selected Infrared Wavelengths On Inactivation Of Microbes On Rough Rice, Rebecca L. Bowie, Griffiths Atungulu, Abass Oduola, Shantae Wilson, Zeinab Mohammadi-Shad
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Formation of harmful microbes and their associated mycotoxins on rough rice during storage presents negative socioeconomic impacts to producers and consumers. The objective for this study was to investigate the impact of treating rough rice with selected infrared (IR) wavelengths at different IR intensities and heating durations, followed by a tempering step for further inactivation of microbes (mold and bacteria) on the grain. Freshly-harvested long-grain, hybrid, rough rice (XL 745) with initial moisture content (IMC) of 18.4% wet basis (w.b.) was used. Two-hundred grams (200 g) samples of rice were treated at different IR wavelengths (λ), 3.2, 4.5, and 5.8 …
The Effects Of Eicosapentaenoic Acid (Epa) And Docosahexaenoic Acid (Dha) On Brown Adipogenesis In Stem Cell Culture, Darynne A. Dahlem, Yan Huang
The Effects Of Eicosapentaenoic Acid (Epa) And Docosahexaenoic Acid (Dha) On Brown Adipogenesis In Stem Cell Culture, Darynne A. Dahlem, Yan Huang
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Polyunsaturated fatty acids (PUFAs), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are major maternal dietary supplements due to their positive benefits on neurological tissue growth during the first 12 weeks of gestation. Previous studies show that EPA and DHA inhibit muscle formation but promote adipogenesis. However, no research has addressed the question whether high intake of EPA and DHA affects brown fat development during gestation. The objective of this study was to measure the effect of EPA and DHA supplement on brown adipogenesis and potential pathways related to mitochondrial biosynthesis using fibroblasts as in vitro model. Using Oil-Red-O staining …
Evaluating Rice Straw As A Substitute For Barley Straw In Inhibiting Algal Growth In Farm Ponds, Jacob O. Maris, Mary Savin, Lisa S. Wood
Evaluating Rice Straw As A Substitute For Barley Straw In Inhibiting Algal Growth In Farm Ponds, Jacob O. Maris, Mary Savin, Lisa S. Wood
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Algal blooms disrupt aquatic ecosystems and are more common in lakes, ponds, and rivers during the summer months due to nutrient pollution. Livestock production can contribute increased quantities of nutrients to water bodies from runoff of manure. Commonly used mechanical and chemical control methods may have limited success because algae are small and propagate quickly. Barley (Hordeum vulgare) straw has been shown to inhibit the growth of algae as the straw decomposes aerobically in ponds. Therefore, barley represents a natural option for algal biomass control. However, the small amount of barley production in Arkansas limits the availability of …
Toward A Model Of Destination Resident–Environment Relationship: The Case Of Gulangyu, China, Lujun Su, Songshan (Sam) Huang, Joanna Pearce
Toward A Model Of Destination Resident–Environment Relationship: The Case Of Gulangyu, China, Lujun Su, Songshan (Sam) Huang, Joanna Pearce
Research outputs 2014 to 2021
This study tested an integrative model to better understand residents’ environmentally responsible behaviour (RERB) and willingness to sacrifice for the environment (WTS) using a sample of 430 residents on Gulangyu Island in China. Results show that destination environmental quality and eco-friendly reputation directly affected resident environmental identification and environmental commitment. Destination eco-friendly reputation directly influenced RERB and WTS. Both resident environmental identification and commitment directly affected RERB and WTS. Furthermore, environmental identification and environmental commitment fully mediate the effects of environmental quality on RERB and WTS, and partially mediate the effects of destination eco-friendly reputation on RERB and WTS. © …
Green-Tinted Glasses: How Do Pro-Environmental Citizens Conceptualize Environmental Sustainability?, Hannah V. Uren, Peta L. Dzidic, Lynne D. Roberts, Zoe Leviston, Brian J. Bishop
Green-Tinted Glasses: How Do Pro-Environmental Citizens Conceptualize Environmental Sustainability?, Hannah V. Uren, Peta L. Dzidic, Lynne D. Roberts, Zoe Leviston, Brian J. Bishop
Research outputs 2014 to 2021
Recent research has shown that many Australians see pro-environmental behaviour as desirable and identify as being green. However when compared to other countries, Australians score poorly on pro-environmental behaviour measures, engaging mostly in tokenistic pro-environmental actions, and demonstrate low levels of concern for the environment. In this article, we examine this tension through exploring the meaning of the term sustainability to Australian participants who self-identify as pro-environmental. Twenty-six interviews were conducted and analysed using a causal layered analysis. Through the examination of participants’ environmental discourse and practices, some of the deeper socio-psychological processes influencing pro-environmental behaviour are revealed. While participants …
Environmental Predictors For The Distribution Of The Caspian Green Lizard, Lacerta Strigata Eichwald, 1831, Along Elevational Gradients Of The Elburz Mountains In Northern Iran, Anooshe Kafash, Sohrab Ashrafi, Annemarie Ohler, Benedikt Rudolf Schmidt
Environmental Predictors For The Distribution Of The Caspian Green Lizard, Lacerta Strigata Eichwald, 1831, Along Elevational Gradients Of The Elburz Mountains In Northern Iran, Anooshe Kafash, Sohrab Ashrafi, Annemarie Ohler, Benedikt Rudolf Schmidt
Turkish Journal of Zoology
Within its range, the Caspian green lizard, Lacerta strigata, occurs in the Elburz Mountains (northern Iran) at elevations from below sea level to approximately 2700 m a.s.l. To determine the environmental factors affecting the distribution of this lizard, we used an ensemble approach to model the distribution of the Caspian green lizard (Lacerta strigata) in Iran using four algorithms (generalized boosted model, maximum entropy, generalized linear model, random forest). Results revealed that low-elevation habitats between the Elburz Mountains and the Caspian Sea are the most suitable habitats for the species. The normalized difference vegetation index (NDVI), annual precipitation (both with …
The Effects Of Mistletoe (Viscum Album L.) On The Physiological Properties Of Some Drupetrees In Turkey, Tamer Üstüner
The Effects Of Mistletoe (Viscum Album L.) On The Physiological Properties Of Some Drupetrees In Turkey, Tamer Üstüner
Turkish Journal of Agriculture and Forestry
In the present study, the effects of mistletoe (Viscum album L.) on the physiological properties of drupe trees were investigated. In order to achieve this goal, sulfhydryl, chlorophyll a and b, total chlorophyll, ascorbic acid, total amino acid, proline, carotenoid, glucose, and fructose levels, as well as leaf proportional water contents were determined in both mistletoe and its hosts under laboratory conditions. According to the results, mistletoe caused a significant decrease in water content and reduced total ascorbic acid content in apricot, almond, and plum. Additionally, mistletoe did not affect the total amino acid, glucose, and fructose concentrations of the …
Group Development In Natural Resource Collaboration In The Crown Of The Continent: Forming, Storming, Norming & Performing, Meghan Rene Neville
Group Development In Natural Resource Collaboration In The Crown Of The Continent: Forming, Storming, Norming & Performing, Meghan Rene Neville
Graduate Student Portfolios, Professional Papers, and Capstone Projects
This portfolio brings together three experiences of natural resource collaborative groups each in a different stage of development. Researcher, Bruce Tuckman, theorized that collaborative groups go through different stages in order to grow, face new challenges, tackle problems, deliver results, and become an effective team (1965). These stages of development are called Forming, Storming, Norming, and Performing. The application of Bruce Tuckman’s model can help both collaborative organizers and outsiders appreciate the complex dynamics of collaborative groups. The overarching goal for my portfolio is to provide new ways to examine natural resource collaborative groups, so that there is a better …
Assessing Synergy Between Climate And Development Projects: Which One Is More Effective, Efficient And Transparent?, A.K. Enamul Haque, Estiaque Bari, Md Rumi Shammin
Assessing Synergy Between Climate And Development Projects: Which One Is More Effective, Efficient And Transparent?, A.K. Enamul Haque, Estiaque Bari, Md Rumi Shammin
Faculty & Staff Scholarship
This study was designed to understand whether projects funded through development window of finance in Bangladesh like the Annual Development Programme(ADP) is different or similar to that of climate window of finance like Bangladesh Climate Change Trust Fund (BCCTF). The BCCTF is managed primarily by the Ministry of Environment, Forests and Climate Change whereas the ADP is managed by the Ministry of Planning and Ministry of Finance. It was, therefore, studied also to understand whether the new window of financing climate projects is more efficient, effective and sustainable. On the contrary, if they are both similar in nature then a …
Time And Transitions As Predictors Of Effective Postdeployment Resilience, Ricarlos Marcell Caldwell
Time And Transitions As Predictors Of Effective Postdeployment Resilience, Ricarlos Marcell Caldwell
Walden Dissertations and Doctoral Studies
Since 9/11 over 2.77 million U.S. service members have deployed 5.4 million times to a theater of war with the majority serving in the U.S. Army. The increased stress inherent in a single combat deployment grows exponentially with each subsequent deployment, resulting in behavioral issues and suicide attempts and ideations. This study's purpose, following resilience theory, was to explore the associations of military life experiences (permanent changes of station, promotions, retirements, etc.) and deployment characteristics (number of deployments, operational specialties, combined lengths of deployments, etc.) to postdeployment resilience in U.S. military personnel. The study's design was a quantitative correlational research …
“Out Of The Mother . . . And Home To The Mother”: Essays On Medieval Literature And Climate Crisis, Rachel Kuhr Smith
“Out Of The Mother . . . And Home To The Mother”: Essays On Medieval Literature And Climate Crisis, Rachel Kuhr Smith
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Moderators Of Positive And Negative Spillover, Sara Rose Smith
Moderators Of Positive And Negative Spillover, Sara Rose Smith
UNF Graduate Theses and Dissertations
Two studies explored individual difference moderators of spillover. Positive spillover occurs when one prosocial behavior leads to an increase in subsequent prosocial behavior, whereas negative spillover or moral licensing occurs when one prosocial behavior leads to a decrease in prosocial behaviors. The moderators of interest were internal motivation, external motivation, and preference for consistency. It was predicted that those who exhibit high external motivation would demonstrate negative spillover, those who exhibit internal motivation would demonstrate positive spillover, and those with high preference for consistency would demonstrate positive spillover. Although these moderation predictions were not supported, Study 1 replicated previous work …
Attitudes About Acceptable Risk In The Context Of The Biodiversity Crisis, Thomas Offer-Westort
Attitudes About Acceptable Risk In The Context Of The Biodiversity Crisis, Thomas Offer-Westort
Dissertations, Master's Theses and Master's Reports
Crafting and enforcing conservation policy requires making normative judgements about what levels of risk are acceptable. These judgements include crucial decisions that impact which species qualify as “endangered.” If a government’s policies are going to represent the values of the public they govern, then public attitudes should be understood. Unfortunately, essentially nothing is known about public attitudes as they pertain to acceptable risk and the biodiversity crisis.
My research aims to address this gap using data from an internet-based survey (n=1050). I focused on the Endangered Species Act of 1973 which defines an endangered species as “any species which is …
Perceptions Of Forest Change In The Governmental Region Of Kaffrine, Senegal, Rhiley E. Allbee
Perceptions Of Forest Change In The Governmental Region Of Kaffrine, Senegal, Rhiley E. Allbee
Dissertations, Master's Theses and Master's Reports
Sénégal is a semi-arid West African country with a diverse ethnic makeup and a rapidly growing population that is largely rural, predominantly employed within the agricultural sector, and heavily reliant on the harvesting of forest products within state owned forests where populations have usufruct rights. The country experienced significant changes in land cover throughout the 20th century due to a series of major droughts and large expansions in agriculture. These changes were partially concentrated throughout the region of Kaffrine, where the wooded savannas of the early 20th century were systematically replaced by agriculture and converted to a shrub …
The Archaeology Of The Postindustrial: Spatial Data Infrastructures For Studying The Past In The Present, Daniel Trepal
The Archaeology Of The Postindustrial: Spatial Data Infrastructures For Studying The Past In The Present, Daniel Trepal
Dissertations, Master's Theses and Master's Reports
Postindustrial urban landscapes are large-scale, complex manifestations of the past in the present in the form of industrial ruins and archaeological sites, decaying infrastructure, and adaptive reuse; ongoing processes of postindustrial redevelopment often conspire to conceal the toxic consequences of long-term industrial activity. Understanding these phenomena is an essential step in building a sustainable future; despite this, the study of the postindustrial is still new, and requires interdisciplinary connections that remain either unexplored or underexplored. Archaeologists have begun to turn their attention to the modern industrial era and beyond. This focus carries the potential to deliver new understandings of the …
Assessing Soil Compaction Following A Winter Timber Harvest In The Western Upper Peninsula Of Michigan, Rafia Rahman
Assessing Soil Compaction Following A Winter Timber Harvest In The Western Upper Peninsula Of Michigan, Rafia Rahman
Dissertations, Master's Theses and Master's Reports
Harvesting during winter is encouraged as a best management practice to protect soil during logging operations. The western Upper Peninsula of Michigan typically experiences early and persistent snowfall, which insulates the forest floor and prevents soils from freezing. The objective of this study is to assess the effects of slash volume, snow depth, overstory treatment, and machine traffic intensity on soil bulk density following a winter harvest of a northern hardwood forest on cobbly silt-loam soils. The harvest was conducted at the Ford Forest in Alberta, Michigan using cut-to-length harvest systems (i.e. harvester and forwarder) during which the soil remained …
Fortune And Failure - Gold And Silver Smelting In The Colorado Rockies 1861 To 1900, Andrew Mueller
Fortune And Failure - Gold And Silver Smelting In The Colorado Rockies 1861 To 1900, Andrew Mueller
Dissertations, Master's Theses and Master's Reports
This dissertation is a study of small-scale smelting in Colorado during the nineteenth century. Many small smelting enterprises were established throughout the mountains of the state from the mid-1860s to the mid-1880s. The smelters helped to revitalize a flagging mining industry by fostering its growth and, consequently, the development of the state before being outcompeted by larger smelting establishments developing in the growing cities on the Front Range. However, the life of these smelters was brief, and the majority failed within a few years. The role of these smelters in Colorado’s history has been largely overlooked but provide a rich …
Ecotourism And Women's Empowerment: A Case Study In Quintana Roo Mexico, Mayra Sanchez Morgan
Ecotourism And Women's Empowerment: A Case Study In Quintana Roo Mexico, Mayra Sanchez Morgan
Dissertations, Master's Theses and Master's Reports
Globally, women make up a relatively large proportion of the tourism workforce; however, they usually do menial jobs and earn lower wages than men doing the same job. Traditional gender expectations and unequal power relations between women and men persist, limiting women’s opportunities. Ecotourism could be a tool for sustainable development and might be expected to empower women, given its explicit attention to social justice, grassroots development, and empowering local people. However, it may primarily empower groups that already have power, and not those who already are in disadvantaged positions, including women. Without explicitly considering gender and power complexities, ecotourism …
Military Applications Of Geological Engineering, Stephen H. Tupper
Military Applications Of Geological Engineering, Stephen H. Tupper
Doctoral Dissertations
"This work examines the premise that military engineering and geological engineering are intellectually paired and overlapped in practice to a significant extent. Geological engineering is an established, albeit young, academic discipline that enjoys wide industry and civil demand and is supported by many professional organizations. In contrast, military engineering is an ancient, empirically derived training or "OJT" program with practice-based trade-associations that has narrow government-only utility. The premise is formed by decades-long observation of U. S. Army military engineer officers completing a Master of Science degree in geological engineering as a complement to their practice-based training in military engineering at …
Social Integration Of Foreign Students In Korean Higher Education : A Case Study Of Southeast Asian Student In Seoul National University, Supatcha Thubsook
Social Integration Of Foreign Students In Korean Higher Education : A Case Study Of Southeast Asian Student In Seoul National University, Supatcha Thubsook
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study aims to understand social integration of Southeast Asian students who studied in Seoul National University by using Bosswick & Heckman social integration theory in order to understand social integration and how important of language towards foreign students help them in specially adjust themselves into Korean society. The important of language is used to examine social integration. The qualitative approach was applied in this study. Four dimensions of social integration theory are acknowledged as the central components of successful integration: structural, cultural, interactive, and identification. And the samples were 20 Southeast Asian students in Seoul National University. The research …
Impact Of Hurricane Katrina On The Coastal Systems Of Southern Louisiana, Wen-Ching Chuang, Tarsha Eason, Ahjond Garmestani, Caleb Roberts
Impact Of Hurricane Katrina On The Coastal Systems Of Southern Louisiana, Wen-Ching Chuang, Tarsha Eason, Ahjond Garmestani, Caleb Roberts
Department of Agronomy and Horticulture: Faculty Publications
Natural disasters, such as hurricanes and forest fires, could trigger collapse and reorganization of social-ecological systems. In the face of external perturbations, a resilient system would have capacity to absorb impacts, adapt to change, learn, and if needed, reorganize within the same regime. Within this context, we asked how human and natural systems in Louisiana responded to Hurricane Katrina, and how the natural disaster altered the status of these systems. This paper discusses community resilience to natural hazards and addresses the limitations for assessing disaster resilience. Furthermore, we assessed social and environmental change in New Orleans and southern Louisiana through …
The Octopus Mind And The Argument Against Farming It, Jennifer Jacquet, Becca Franks, Peter Godfrey-Smith
The Octopus Mind And The Argument Against Farming It, Jennifer Jacquet, Becca Franks, Peter Godfrey-Smith
Animal Sentience
Mather is convincing about octopuses having ‘a controlling mind, motivated to gather information,’ but stops short of asking what having that mind means for octopus moral standing. One consequence of understanding the octopus mind should be a refusal to subject octopuses to mass production. Octopus farming is in an experimental phase and supported by various countries. We argue that it is unethical because of concerns about animal welfare as well as environmental impacts.
Just Preservation, Adrian Treves, Francisco J. Santiago-Ávila, William S. Lynn
Just Preservation, Adrian Treves, Francisco J. Santiago-Ávila, William S. Lynn
Animal Sentience
We are failing to protect the biosphere. Novel views of conservation, preservation, and sustainability are surfacing in the wake of consensus about our failures to prevent extinction or slow climate change. We argue that the interests and well-being of non-humans, youth, and future generations of both human and non-human beings (futurity) have too long been ignored in consensus-based, anthropocentric conservation. Consensus-based stakeholder-driven processes disadvantage those absent or without a voice and allow current adult humans and narrow, exploitative interests to dominate decisions about the use of nature over its preservation for futurity of all life. We propose that authentically non-anthropocentric …
The Intrinsic Value Of Nature, Joanna E. Lambert
The Intrinsic Value Of Nature, Joanna E. Lambert
Animal Sentience
Treves et al. explain the need to preserve the rights of nonhuman species, human youth, and future generations. Although conservation biology has claimed to have an intrinsic valuation ethic since its inception in the 1980s, many aspects of the field have taken a decidedly anthropocentric and instrumentalist trajectory. This has important consequences for conservation-related policy and practice at all scales: local, regional, and global.
Mobilizing Heads And Hearts For Wildlife Conservation, Valérie A. M. Schoof, Simon L'Allier
Mobilizing Heads And Hearts For Wildlife Conservation, Valérie A. M. Schoof, Simon L'Allier
Animal Sentience
Highlighting the shared evolutionary relationships between humans and animals — and recognizing that all species, including humans, are unique in their own way — may facilitate caring for and conserving animals by tapping into a human emotion: empathy.
Microbial Synthesis And Characterization Of Silver Nanoparticles Using Alternaria Alternata, Sarafadeen O. Kareem, Oluwagbenga T. Familola, Adejare R. Oloyede, Enock O. Dare
Microbial Synthesis And Characterization Of Silver Nanoparticles Using Alternaria Alternata, Sarafadeen O. Kareem, Oluwagbenga T. Familola, Adejare R. Oloyede, Enock O. Dare
Applied Environmental Research
In this study, extracellular biosynthesis of silver nanoparticles (AgNPs) was carried out using Alternaria alternata. AgNPs were synthesized using vegetative and cell-free filtrate methods. Silver nitrate (AgNO3) solution was reduced with fungal mycelial mass and cell-free filtrate at a ratio of 1:4 (v/v). Further, the effects of biosynthesis parameters (reaction time, reaction temperature, light and dark incubation, and static and agitated conditions) were determined. The structural integrity of the synthesized AgNPs was investigated through UV-visible spectrophotometry, X-ray diffraction (XRD) analysis, and transmission electron microscopy (TEM). Parameter optimization revealed that cell-free filtrate AgNP synthesis at 40 °C with constant agitation and …
Assessment Of Hearing Loss Among Workers In A Power Plant In Thailand, Pensri Watchalayann, Laksana Laokiat
Assessment Of Hearing Loss Among Workers In A Power Plant In Thailand, Pensri Watchalayann, Laksana Laokiat
Applied Environmental Research
Noise exposure in the working environment is a major cause of hearing impairment for workers; an audiogram hearing threshold level above 20 dB is considered irregular. In this study, audiometric data were analyzed with the objective of assessing hearing loss among power plant workers based on their age, noise exposure level, years of working, and work characteristics. A cross-sectional study was conducted to assess hearing level data for 672 workers reserved by the Health Care Unit of the power plant. The most recent audiometric data presented during 2013-2015 were used in the statistical analysis at 5 % level of significance. …
Synthesis Of Calcium Oxide From River Snail Shell As A Catalyst In Production Of Biodiesel, Sasiprapha Kaewdang, Rotjapun Nirunsin
Synthesis Of Calcium Oxide From River Snail Shell As A Catalyst In Production Of Biodiesel, Sasiprapha Kaewdang, Rotjapun Nirunsin
Applied Environmental Research
This research studied synthesis of calcium oxide from river snail shells by calcination at 700,800 and 900 °C for 4 h, and its subsequent use as a catalyst for biodiesel production. The calciumoxide fraction in calcined river snail shell was analyzed by X-ray fluorescence (XRF), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRF result showed calciumoxide levels of 59.499 %, 70.113 % and 73.88 1%, respectively, at corresponding calcination temperatures of 700, 800 and 900 °C. The SEMimages revealed porous, rough, and fragile surfaces which became agglomerated at elevated temperatures. The calcium oxide obtained from each calcination temperature …
Reduction Of Ghg Emissions Using Zeolite 4a Under Different Fertilizer Usages In Rice Cultivation, Patthanant Natpinit, Borisut Chantrawongphaisal, Rewadee Anuwattana, Thitirat Ditkaew, Chotika Kongsomboon, Phavit Thapnui, Phongsak Hongcharoensri
Reduction Of Ghg Emissions Using Zeolite 4a Under Different Fertilizer Usages In Rice Cultivation, Patthanant Natpinit, Borisut Chantrawongphaisal, Rewadee Anuwattana, Thitirat Ditkaew, Chotika Kongsomboon, Phavit Thapnui, Phongsak Hongcharoensri
Applied Environmental Research
This investigation examined the potential of zeolite 4A to reduce emission of greenhouse gases (GHGs) in rice cultivation under different fertilizer regimes. A completely randomized design was used with four treatments (different fertilizer application method) and 2 blocks (zeolite 4A application, using rice variety RD-41 sown at a seed rate of 15.625 g m-2, and harvested in 105 d in Lam Ta Khong Research Station, Nakhon Ratchasima. The experimental results demonstrated that significant reduction in GHG emissions in zeolite 4A treated plots, either alone or in combination with chemical fertilizers, with GHG reduction of 43.27 % and 34.69 %, respectively. …