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 23 for “"exposure level"”.
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Prevalence of musculoskeletal symptoms and ergonomic risk assessment among production workers in manufacturing industries
… Rapid Entire Body Assessment (REBA) and Quick Exposure Check (QEC) as a direct observational tool. A total of 252 production workers from various manufacturing industries were selected as samples in this case study. Mostly, the age of production workers working there were between 21-30 years …
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Foliar Symptoms of Acute Ozone Injury and Exposure Response Characteristics of Select Native Perennials
… species native to the Eastern Temperate Forests Level I Ecoregion were exposed to an acute ozone (O3) treatment consisting of a target peak O3 concentration of 2.0 ppm for 30 minutes in a closed chamber environment, during the summer of 2010. Plants were evaluated for visible foliar injury …
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Exposure heterogeneity, host immunity and virulence evolution in a wild bird-bacterium system
… in free-living host populations is the degree of exposure to a pathogen, as well as a host's history of exposure to a pathogen, which can create variation in standing immunity. We sought to determine the role of exposure heterogeneity on host susceptibility and immunity to secondary infection, and …
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Evaluation of Neurotoxic Effect for the Low-Dose Mixed Organic Solvents Exposed Workers by using Posturography
… workers exposed to mixed solvents under the TLV level in Korea. Forty-one workers (mean age 41.5) from 4 factories exposed to mixed organic solvents and 82 non-exposed referents (mean age 42.9) were examined. The duration of the exposure ranged from 0.2-30 years (mean 4.2 years) and the life-time …
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Population pharmacokinetics: model-free approach and nonlinear mixed-effects modelling
… It introduces a model-free measure of patient's exposure to drugs, and then investigates the relationships between the exposure level and covariates using various statistical techniques. Classification tree models (CART) and regression analysis are used to study various subpopulations of …
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E-banking operational risk assessment. A soft computing approach in the context of the Nigerian banking industry.
… tools for identifying OR, and measuring OR exposure level. In addition, a new ORA methodology is proposed which consists of four major steps: a risk model, assessment approach, analysis approach and a risk assessment process. Further, a new ORA framework and measurement metrics are proposed …
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E-banking operational risk assessment. A soft computing approach in the context of the Nigerian banking industry.
… tools for identifying OR, and measuring OR exposure level. In addition, a new ORA methodology is proposed which consists of four major steps: a risk model, assessment approach, analysis approach and a risk assessment process. Further, a new ORA framework and measurement metrics are proposed …
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Topics in odds ratio estimation in the case-control studies and the bioequivalence testing in the crossover studies.
… are classified into groups by disease and exposure levels using a fallible test, and second, some individuals are classified into a subset using a ``gold standard" test. The parameter of interest in our study is the odds ratio as an association between disease level and exposure level. Here …
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ASSESSING THE GENOTOXICITY OF TRICLOSAN IN TADPOLES OF THE AMERICAN BULLFROG, LITHOBATES CATESBEIANUS.
… waters. Eight replicates of each of the three levels of Triclosan contamination were prepared, as well as eight replicates per control group. Each replicate contained three tadpoles in a glass aquarium, from which one tadpole per tank was sampled after 1, 8, or 15 days following initial …
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Developing a framework of non-fatal occupational injury surveillance for risk control in palm oil mills
… by using epidemiological data, noise exposure data and NFOI data among palm oil mills’ workers. A total of 420 respondents who assigned in operation and processing areas (OP) (n=333) and general or office workers (n=87) had voluntary participated in this research. A questionnaire …
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Analysis of rbd palm olein abrasive blasting as new metal surface cleaning method
… performance of cleaning process, personal dust exposure reduction, emission rate reduction and corrosion inhibition. In this research, the performance of RBD palm olein abrasive blasting was evaluated using ISO 8501-1 visual assessment method. Abrasive blasting workers’ exposure level to the …
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Ecotoxicology and ecophysiology of mysids, with special reference to copper toxicity in Praunus flexuosus
… was insignificant after 10 days of copper exposure (0, 5,25, 75 and 200µg 1<sup>-1</sup>) in winter, lethal effects occurred at every copper exposure level after 24 hours (96h LC<sub>50</sub> =30.8 µg 1<sup>-1</sup>) in summer. The effects of copper on metabolism (respiration and excretion) …
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Nonparametric Statistical Approaches for Benchmark Dose Estimation in Quantitative Risk Assessment
… quantifies the relationship between exposure level (dose) and response (adverse endpoint) is fit to experimental data. The objective of this dissertation is to estimate adverse risks encountered in settings when the statistical model is formally defined and developed. From this, …
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An assessment of dust exposure levels and factors associated with the occurrence of respiratory symptoms among workers in the road construction industry in Lusaka, Zambia
Research into dust exposure in the road construction industry and the prevalence of respiratory symptoms in Zambia has not been extensively conducted despite the respiratory symptoms forming the primary burden of occupational illnesses in Zambia. The absence of literature in this industry on …
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An assessment of dust exposure levels and factors associated with the occurrence of respiratory symptoms among workers in the road construction industry in Lusaka, Zambia
Research into dust exposure in the road construction industry and the prevalence of respiratory symptoms in Zambia has not been extensively conducted despite the respiratory symptoms forming the primary burden of occupational illnesses in Zambia. The absence of literature in this industry on …
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Electromagnetic Exposure In A Phantom In the Near and Far Fields of Wire and Planar Antennas
… on scientific research on electromagnetic (EM) exposure from wireless devices and antennas. The metric that quantifies the exposure level is called the Specific Absorption Rate (SAR). Wireless devices must satisfy the regulatory standards before being marketed. In the past, researchers have …
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Attitudes and Moral Development During a College Course on Human Sexuality
… the four topics were coded for evidence of level of moral development and factors contributing to cognitive effort and commitment to one's opinion. Demographic influences on attitudes included sex, in which women scored higher on average attitudes than men in the topics of gender, sexual …
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Estrogenic and androgenic endocrine disrupting activity and risk assessment of phytoestrogens in Kenyan soya-based weaning flours
… cell line revealed potent estrogenicity. The exposure level of genistein and daidzein in baby gruel flours was above the acceptable daily intake ADI for phytoestrogens which is I mg/Kgbw/day for each phytoestrogen. The total estrogenicity due to genistein and daidzein in the flour was below …
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Investigating the role of CD56⁻ ‘atypical’ NK cells in Gambian children with asymptomatic malaria
… regions, individuals endure repeated exposure to and are infected with the parasite throughout their lives. Despite this high exposure level, complete parasitic clearance from the bloodstream, known as sterile immunity, is rarely achieved. Instead, individuals from highly endemic …
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Interactions of Environmental Pollutants with Human Gut Bacteria
… a wide concentration range from ng/L to mg/L exposure levels until an equilibrium was reached. The abundant gut bacterium Bacteroides uniformis showed 50-fold enrichment of PFNA in the bacterial pellet compared to the exposure level. Escherichia coli, which accumulated PFAS to a much lesser …
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