Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1854 for “"Harmful"”.
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Harmful events in guardrail crashes
… and provide data on injury distributions and harmful events in guardrail-related accidents.;Recognizing these limitations, reported guardrail accidents from Highway Safety Information System (HSIS) databases were examined. Data analysis was done using two-way and three-way contingency …
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The bio-optical detection of harmful algal blooms
… algorithm designed for the detection of harmful algal blooms. The adopted framework focuses on establishing quantitative relationships between optically important algal intracellular properties and inherent optical properties (IOPs), such as the absorption and backscattering coefficients, …
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Molecular insights into the niche of harmful brown tides
Recurrent brown tide blooms caused by the harmful alga Aureococcus anophagefferens have decimated coastal ecosystems and shellfisheries along the Eastern U.S. and South Africa. The exact mechanisms controlling bloom formation, sustenance, and decline are unclear, however bottom-up factors such as …
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Nitrogen nutrition of harmful algal blooms in upwelling systems
Blooms of toxic, or otherwise harmful phytoplankton species are known to occur in eastern boundary upwelling systems, coincident with the relaxation of upwelling in late<br/>summer/autumn. Field studies were carried out in 3 consecutive summers (March/April 06-08)<br/>in the Benguela and in the …
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Predictors of harmful sexual behaviors in a normative population
<p>In order to identify important predictors of high-risk and aggressive sexual behavior, this study examined the relationships between problematic sexual behavior, aberrant sexual experiences, family environment, parental monitoring, delinquency, and peer relatedness. Participants were 344 college …
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Molecular insights into the niche of harmful brown tides
Recurrent brown tide blooms caused by the harmful alga Alureococcus anophagefferens have decimated coastal ecosystems and shellfisheries along the Eastern U.S and South Africa. The exact mechanisms controlling bloom formation, sustenance, and decline are unclear, however bottom-up factors such as …
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Assessing the risk to aquaculture from Harmful Algal Blooms (HABs)
Harmful Algal Blooms (HABs) occur worldwide with regionally based differences in their<br/>occurrences. Some of these events have human health consequences due to associated<br/>shellfish poisoning symptoms after consumption of contaminated organisms. Negative<br/>economic implications from HABs …
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Landscape and climate drivers of harmful algal blooms in Iowa
1 PDF file (viii, 74 pages)
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College Student Vulnerability to Harmful Religious Groups Based on Perceptions.
<p>This study was conducted in an attempt to understand which, if any, groups of college students are susceptible to cult influence based on false perceptions. Religion is a powerful practice that, if used for the wrong reasons, can influence a person to dissolve social and financial relationships …
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Improving the predictability of harmful algal blooms around the Shetland Islands
Toxin producing harmful algal blooms (HABs) are one of the principal challenges facing the shellfish aquaculture industry. This is important because biotoxins are a serious threat to human health. Symptoms of algal toxin poisoning can range from the embarrassing and debilitating to neurological …
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“Down Your Drink” (DYD): a digital intervention to reduce harmful drinking
Excessive alcohol consumption contributes to significant individual and societal harms. Screening and Brief Interventions are effective in reducing consumption and digital versions, delivered online, have the potential to reach large numbers of people, who would not otherwise receive help, at low …
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Effects of hydrothermal liquefaction on algal toxins from harmful algae blooms
The formation of harmful algae blooms (HABs) in natural waters is an intensifying issue throughout the world and poses risks to the environment due in part to the toxins they release. A promising mitigation technique is to physically collect the HABs from the environment and convert them into …
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Environmental Monitoring of Cyanobacterial Harmful Algal Blooms Using Small Unmanned Aerial Systems
Cyanobacterial harmful algal blooms (CHABs) degrade water quality and may produce toxins. The distribution of CHABs can change rapidly due to variations in population dynamics and environmental conditions. Biological and ecological aspects of CHABs were studied in order to better understand CHABs …
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Mating interactions of the harmful dinoflagellate alexandrium tamarense from UK coastal waters
… isolates. Toxic isolates are associated with harmful algal blooms (HAB’s) due to their ability to produce powerful neurotoxins, which are responsible for outbreaks of paralytic shellfish poisoning in areas of shellfish production. Sexual reproduction in A. tamarense has important implications …
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A Phenomenological Examination of How Counseling Students Define Harmful And Healthy Spirituality
… is the lack of consensus on what defines harmful and healthy spirituality and how to prepare future counselors to address this issue in the counseling setting. This study interviewed seven counseling students, at a large school located in the Southeast, to measure how they defined these …
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Exploring undergraduate students’ topic interest, topic knowledge, and attitudes regarding harmful algal blooms
<p>Harmful algal blooms (HABs) are a growing concern in the US and abroad. Persistent misconceptions regarding HABs can increase the negative effects of bloom events by decreasing the effectiveness of communication efforts and impeding mitigation, monitoring, and recovery efforts. Addressing the …
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Cyanobacterial Harmful Algal Blooms Vary Within and Across Years at Lake Fayetteville, Arkansas
<p>The occurrence of cyanobacterial harmful algal blooms (HABs) and toxins are a nationwide concern. Although Lake Fayetteville likely experienced HABs for many years, microcystin, an algal toxin, was not monitored until 2019. The objectives of this study were to: 1) observe temporal variation in …
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The Constitutionality of Ex Post Facto Authorisation for Environmentally Harmful Activities in South Africa
Environmental activities that have been listed as harmful under the National Environmental Management Act (NEMA) must be authorised prior to commencement in South Africa. The process of authorisation (EA) requires an Environmental Impact Assessment (EIA) to be commissioned before a listed activity …
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Chitosan Graphene Composite Fabrication and Characterization for Treatment of Harmful Algal Blooms and Toxins
… and characterized as a management strategy for harmful algal blooms (HABs) caused by various species of cyanobacteria. These chitosan graphene materials were compared to previously studied chitosan graphene-oxide composites in both material properties and HAB treatment. In previous studies, …
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