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.
Results
Showing 1 to 20 of 73 for “"Cross-contamination"”.
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Effect of Poor Sanitation Procedures on Cross-Contamination of Animal Species in Ground Meat Products
… of intentional mislabeling as opposed to cross-contamination, the actual percent of undeclared species resulting from cross-contamination has not been experimentally determined. The objective of this study was to quantify the effect of sanitation procedures on the crosscontamination of …
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Examining cross contamination pathways for foodborne pathogens in a retail deli environment using an abiotic surrogate
Understanding potential cross contamination pathways is essential to reducing the risk of food product contamination. The use of a fluorescing abiotic surrogate (GloGermTM) to visualize the potential spread of bacteria may be beneficial to researchers. To quantify cross contamination during …
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Investigation into the effects of chromium cross-contamination in niobium sputter deposited coatings using a multi-target PVD system.
… individual target shutters, the possibility of crosscontamination between targets of different metals therefore arises.This thesis describes research into the existence and possible effects of Cr cross-contamination on the physical properties of Nb coatings on M2 High Speed Steel (HSS) and 304 …
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Evaluating the Cross-Contamination Risks of Salmonella and Generic Escherichia coli on Agricultural Ground Covers in Produce Pre-Harvest Production
… fruits and vegetables due to potential microbial contamination. Under the FSMA PSR dropped produce includes (i) produce that has detached from the parent plant and unintentionally contacts the ground and (ii) produce that is attached to the parent plant and unintentionally contacts the ground. Due …
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Addressing Genetic Pollution from Pollen Drift on a Heterogeneous Landscape
… that spatial variability affects the degree of cross-contamination between GM and non-GM crops, no spatial analysis has been carried out to investigate how heterogeneity of landscapes influences the possibility for GM and non-GM crops to coexist. We aim with this research to analyze how spatial …
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Understanding South African herbicide workers’ residual take-home exposure risks from personal protective equipment cleaning and storing practices
… work clothes home, those items pose a risk of cross-contamination. Agriculture employers are recommended to make facilities available for workers to clean and store contaminated items at the workplace to reduce the risk of cross-contamination. However, little research has been conducted on …
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Development and Evaluation of Food Safety Signs
… food safety concepts developed into images were: cross-contamination, proper use of thermometer to check temperatures of foods, proper cooling of foods, and do not work with food if ill. The four food safety concepts were designed into three different formats: pictures and words (English/Spanish), …
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Metal complexes with biological activity
… neural networks to evaluate the cell culture cross-contamination. I selected a new family of copper(II) complexes with 1,10-phenanthroline (phen), 1,10-phenanthrolin-5,6-dione (phendione), and 1,10-phenanthrolin-5,6-diol (phendiol) for the synthesis of new antiproliferative agents. Considering …
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Influence of Polyolefin Contamination on the Thermal Characteristics of Bottle Grade Recycled Polyethylene Terephthalate
… and separation process of bottle grade PET, cross contamination with polyolefin is inevitable. Very small number of polyolefin bottles, caps and closures pass through the separation process and get recycled with PET bottles and affect the final characteristics of the recyclate. The effect of …
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Production of AAV vectors for gene therapy : a cost-effectiveness and risk assessment
… for this project were to decrease the biological contamination and cross-contamination risk associated with the biologic manufacturing process for viral gene therapy vectors and to adjust the process in order to optimize commercial profit. The project also included documenting the different …
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Enhancing the injectability of high concentration drugs via core annular flows
… problem face several challenges ranging from cross contamination and high cost to needle clogging and protein inactivation. Here we report a simple method to enhance formulation injectability through a core annular flow that lubricates viscous transport through a needle. We study the …
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EVALUATING METHODS OF CLEANING AND CLEANING VERIFCATION FOR THE REMOVAL OF ENVIRONMENTAL PATHOGENS IN FOOD PROCESSING PLANTS
… environment increases the risk of their cross-contamination into food products. Indeed, many epidemiological investigations have linked outbreaks of foodborne illness to environmental contamination from the food processing environment. This collection of works aims to address this issue …
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Sequence Detection and Comparative Analysis of the Hv1 and Hv2 Control Regions of Human Mitochondrial DNA by Denaturing High-Performance Liquid Chromatography
… assay-to-assay variability. In addition, cross-contamination on the DHPLC columns demonstrated very low level DNA carryover between a high-abundance sample and subsequent zero-volume injections.</p> <p>The accuracy with which DHPLC technology can be used to screen both evidence and control …
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Using Pedigree Reconstruction to Test Head-Starting Efficiency for Endangered Amphibians: Field Tested in the Houston Toad (Bufo Houstonensis)
… events, indirect fertilization, or physical cross contamination of egg strands either in captivity or upon collection from the wild. I estimated the over winter survivorship of post-metamorphosed juveniles to be 0.001. Given the low survivorship and low frequency of head-starts on the …
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Effect of different marinade treatments on survival and morphology of pathogens in beef jerky
… effective thermal processing, and avoidance of cross - contamination is considered ideal for ensuring the safety of beef jerky for consumers.
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Quantitative dynamics of T-cell receptor repertoires and their use for cancer patient stratification
… them. The suspicion of relatively high levels of cross-contamination in this longitudinal dataset and others led us to the development of a systematic contamination detection and cleaning framework for TCR repertoire data. In Chapter 4 we describe the steps of the framework and showcase its use in …
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Social and Behavioral Characteristics of Individuals with Celiac Disease
… access to medical testing, and issues of cross contamination can be a problem for this population.
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Assessment of Educational Needs and Current Practices of Front-line Grocery Employees in the Deli and Bakery
… data collection focused on glove use, cross-contamination, and hand washing. The results showed that most grocery food handlers desired hands-on, interactive and one-on-one training that occurs frequently, but is short: less than two hours in length. Overall, most grocery food handlers …
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Niche-adaptive evolution in Campylobacter jejuni
… through consumption of undercooked products, cross contamination from raw meats, or through direct contact with birds or their faecal matter, however it is established that poultry is not the sole cause of C. jejuni infection in humans. This research reveals new information on the MLST ST403 …
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Airborne Campylobacter in a Poultry Processing Plant
… and raw poultry products. Identifying areas of contamination or modes of transmission during commercial processing can lead to strategies to reduce the level of Campylobacter on finished products. Monitoring levels of airborne Campylobacter may be useful for identifying the presence or relative …
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