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Search Results: 1 - 10 of 4606 matches for " Beth Ann Crozier-Dodson "
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Evaluation of Potential for Translocation of Listeria monocytogenes from Floor Drains to Food Contact Surfaces in the Surrounding Environment Using Listeria innocua as a Surrogate  [PDF]
Jasdeep K. Saini, James L. Marsden, Daniel Y. C. Fung, Beth Ann Crozier-Dodson
Advances in Microbiology (AiM) , 2012, DOI: 10.4236/aim.2012.24073

Floor drains in processing environments harbor Listeria spp. due to continuous presence of humidity and organic substrates. Cleaning and washing activities in food-processing facilities can translocate the bacterial cells from the drain to the surrounding environment, thus contaminating food products still in production. This study evaluated the potential for translocation of Listeria monocytogenes from drains to food contact surfaces in the surrounding environment using Listeria innocua as a surrogate. A 7 × 7 × 8-foot polycarbonate flexi-glass chamber with a 10-inch-diameter drain mounted on an aluminum cabinet was used. Stainless steel coupons (6.4 × 1.9 × 0.1 cm, 12 per height) were hung at 1, 3, and 5 feet inside the chamber. Four treatment sets; non-inoculated, non-treated; non-inoculated, treated; inoculated, treated; inoculated non-treated; and two subtreatments of 8 h and 48 h were performed. For the inoculated sets, meat slurry (10 gof ground beef in 900 mL water) and a four-strain cocktail of Listeria innocua at 7 - 8 log CFU/mL were used. For the treated sets, in addition, a commercial cleaner and sanitizer was applied. The drain was cleaned using a pressure hose (40 - 50 psi) after 8 h and 48 h. Coupons were then removed and enriched in listeria enrichment broth to establish if any cell translocated from the drain onto the stainless steel coupons via aerosols generated during washing. Confirmation was done using VIP Listeria rapid test kits. Results indicated translocation at all three heights ranging from 2% - 25%. Significantly higher translocation (p < 0.05) was found at 1 foot (up to 25%), followed by 3 feet (up to 11%) and 5 feet (up to 2.7%). This research indicated that translocation of Listeria spp. from drains to food contact surfaces does occur and increases with increased proximity to the drain.

食品科学 , 2013,
Abstract: ?食品的微生物检测涉及到样品前处理和后续的均质。本实验对stomacher?、pulsifier?、bagmixer?和smasher?共4种拍击式均质机进行了四方面的比较:10种食品的活菌计数;距离5英尺远,人工和分贝计比较设备操作过程中的噪音强度;设备使用后清洗的难易程度;操作性。具体操作是从10种食品各取25g,加入装有224.5ml0.1%的蛋白胨水的样本袋中,再加入0.5ml大肠杆菌菌液。每种食品都用拍击式均质机均质60s。以拍击式均质机stomacher?作为参照,确定设备使用后清洗的难易程度及操作性。结果表明:4种拍击式均质机活菌计数的结果相似,smasher?和bagmixer?的噪音强度最低,stomacher?的噪音强度其次,pulsifier?的噪音强度最高。smasher?使用后清洗和操作最方便,依次分别是bagmixer?、stomacher?和pulsifier?。
食品科学 , 2010,
Abstract: ?牛奶预热后分装并分别接种体积分数3%的酸奶和2.15(lg(cfu/ml))的大肠杆菌o157:h7,在45℃下发酵5h后贮藏于4℃的冰箱中。利用pathatrix大体积循环系统中偶联了抗体的免疫磁珠特异性地捕获这些酸奶中的大肠杆菌o157:h7。免疫磁珠重悬于1%的蛋白胨水后涂布于添加了新生霉素(5mg/l)的山梨醇麦康凯固体培养基中,培养基在37℃恒温培养箱中放置24h。实验结果表明,酸奶中大肠杆菌o157:h7的数量逐渐减少,12d后才检测不到。因此乳制品加工及保存过程中,需要加强对大肠杆菌o157:h7污染的监测,以保证乳制品的安全性。
Development of a fall prevention protocol for replication in a virtual environment  [PDF]
Beth Ann Walker, Lesa L. Huber
Advances in Aging Research (AAR) , 2012, DOI: 10.4236/aar.2012.12006
Abstract: Several effective fall prevention exercise programs address the problem of falls. The primary challenge is not to develop effective programs, but to find ways to motivate older people to begin and maintain these programs while delivering these programs to as many older adults as possible. This short-term pilot study collected preliminary data on the design and testing of a balance rehabilitation protocol that could be replicated in a virtual gaming environment like the Wii Fit. The protocol, based on evidence- based practice, focused on strength, endurance, and functional reach. Eight older adults participated in twelve one hour sessions with an occupational therapist and exercise professional. Outcome measures included the Modified Falls Efficacy Scale, Life Space Questionnaire, and postural sway. Results suggest that the protocol was effective in improving postural sway (as measured by a force plate), reducing fear of falling, and increasing perceived life space.
Determining Determiner Sequencing: A Syntactic Analysis for English
Beth Ann Hockey,Dania Egedi
Computer Science , 1994,
Abstract: Previous work on English determiners has primarily concentrated on their semantics or scoping properties rather than their complex ordering behavior. The little work that has been done on determiner ordering generally splits determiners into three subcategories. However, this small number of categories does not capture the finer distinctions necessary to correctly order determiners. This paper presents a syntactic account of determiner sequencing based on eight independently identified semantic features. Complex determiners, such as genitives, partitives, and determiner modifying adverbials, are also presented. This work has been implemented as part of XTAG, a wide-coverage grammar for English based in the Feature-Based, Lexicalized Tree Adjoining Grammar (FB-LTAG) formalism.
Imaging of Disease Dynamics during Meningococcal Sepsis
Hong Sj?linder, Ann-Beth Jonsson
PLOS ONE , 2007, DOI: 10.1371/journal.pone.0000241
Abstract: Neisseria meningitidis is a human pathogen that causes septicemia and meningitis with high mortality. The disease progression is rapid and much remains unknown about the disease process. The understanding of disease development is crucial for development of novel therapeutic strategies and vaccines against meningococcal disease. The use of bioluminescent imaging combined with a mouse disease model allowed us to investigate the progression of meningococcal sepsis over time. Injection of bacteria in blood demonstrated waves of bacterial clearance and growth, which selected for Opa-expressing bacteria, indicating the importance of this bacterial protein. Further, N. meningitidis accumulated in the thyroid gland, while thyroid hormone T4 levels decreased. Bacteria reached the mucosal surfaces of the upper respiratory tract, which required expression of the meningococcal PilC1 adhesin. Surprisingly, PilC1 was dispensable for meningococcal growth in blood and for crossing of the blood-brain barrier, indicating that the major role of PilC1 is to interact with mucosal surfaces. This in vivo study reveals disease dynamics and organ targeting during meningococcal disease and presents a potent tool for further investigations of meningococcal pathogenesis and vaccines in vivo. This might lead to development of new strategies to improve the outcome of meningococcal disease in human patients.
Olfactory Nerve—A Novel Invasion Route of Neisseria meningitidis to Reach the Meninges
Hong Sj?linder,Ann-Beth Jonsson
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0014034
Abstract: Neisseria meningitidis is a human-specific pathogen with capacity to cause septic shock and meningitis. It has been hypothesized that invasion of the central nervous system (CNS) is a complication of a bacteremic condition. In this study, we aimed to characterize the invasion route of N. meningitidis to the CNS. Using an intranasally challenged mouse disease model, we found that twenty percent of the mice developed lethal meningitis even though no bacteria could be detected in blood. Upon bacterial infection, epithelial lesions and redistribution of intracellular junction protein N-cadherin were observed at the nasal epithelial mucosa, especially at the olfactory epithelium, which is functionally and anatomically connected to the CNS. Bacteria were detected in the submucosa of the olfactory epithelium, along olfactory nerves in the cribriform plate, at the olfactory bulb and subsequently at the meninges and subarachnoid space. Furthermore, our data suggest that a threshold level of bacteremia is required for the development of meningococcal sepsis. Taken together, N. meningitidis is able to pass directly from nasopharynx to meninges through the olfactory nerve system. This study enhances our understanding how N. meningitidis invades the meninges. The nasal olfactory nerve system may be a novel target for disease prevention that can improve outcome and survival.
Measuring Clothing Color and Design Symbolism Preferences and Purchase Intentions of Asian Indian Females at Different Levels of Acculturation
Ann Beth Presley,Whitney Upchurch Campassi
ISRN Textiles , 2013, DOI: 10.1155/2013/859419
Abstract: The purpose of this study was to develop a reliable and valid instrument to measure color, design clothing preferences, and purchase intentions of Asian-Indian female consumers; secondarily, to determine if westernized clothes with Asian-Indian ethnic dress elements might be purchased more often than westernized clothing with design attributes primarily symbolic of American culture at different levels of acculturation. The instrument included a modified acculturation scale, limited demographics, and the developed Clothing Preferences and Purchase Intention Instrument. The instrument consisted of four components: Color Symbolism and Purchase Intention, Design Symbolism and Purchase Intention, Symbolic Attributes Scale, and Clothing Preference and Purchase Intention for Mainstream American versus Asian-Indian Inspired. All of the scales had high reliability. Of the 30 colors in the instrument, red, magenta, orange gold, yellow, cobalt blue, and purple were symbolic of Asian-Indian dress; hunter green, navy blue, baby blue, and blue were considered western colors. Neutral colors were eliminated. Nine of the 27 tunics in the instrument were highly indicative of Asian-Indian clothing; 11 were indicative of westernized clothing. Secondarily, Asian-Indians preferred and showed intent to purchase westernized clothing with colors and designs associated with their native country’s traditional dress regardless of acculturation. 1. Introduction Study of Asian Indian immigrants to the (USA) and their clothing preferences and purchase intentions is an important area of research. Immigrants from India are at their highest rates in history [1]. According to the USA census, in 2010 there were 2.9 million people in the USA that classified themselves as Asian Indians. They have a growth rate of 38% since 2000, the highest rate for any Asian country [1]. Almost 67% of all Indians have a bachelor’s or higher degree (compared to 28% nationally and 44% on average for all Asian American groups). Almost 50% of Asian Indian immigrants have graduate or professional degrees [2]. In addition, the median family income for this group is $113,095 compared to $68,257 for the median overall household income in the USA [3] giving this ethnic group significantly higher purchasing power than many other consumers. Studying the clothing preferences and purchase behavior of this segment of the population is beneficial in providing a selection of apparel appealing to this market. In order to study an ethnic group as they move to the USA, one must first determine how well they have adapted to
The Development of an Inquiry-based Curriculum Specifically for the Introductory Algebra-based Physics Course
Beth Thacker,Abel Diaz,Ann Marie Eligon
Physics , 2007,
Abstract: We discuss an inquiry-based curriculum that has been developed specifically for the introductory algebra-based physics course, taking into account the needs, backgrounds, learning styles and career goals of the students in that class. The course is designed to be taught in a laboratory-based environment, however parts of the materials can be used in other settings. As instructors we found ourselves drawing on materials developed for the calculus-based course and for other populations (materials developed for pre-service teachers, for example), parts of which were appropriate, but not a complete curriculum as we would like to teach it, developed specifically for students in the introductory algebra-based physics course. So we have modified and adapted parts of existing materials and integrated them with our own new units and our own format, creating a course aimed specifically at these students.
Accuracy, Coverage, and Speed: What Do They Mean to Users?
Frankie James,Manny Rayner,Beth Ann Hockey
Computer Science , 2000,
Abstract: Speech is becoming increasingly popular as an interface modality, especially in hands- and eyes-busy situations where the use of a keyboard or mouse is difficult. However, despite the fact that many have hailed speech as being inherently usable (since everyone already knows how to talk), most users of speech input are left feeling disappointed by the quality of the interaction. Clearly, there is much work to be done on the design of usable spoken interfaces. We believe that there are two major problems in the design of speech interfaces, namely, (a) the people who are currently working on the design of speech interfaces are, for the most part, not interface designers and therefore do not have as much experience with usability issues as we in the CHI community do, and (b) speech, as an interface modality, has vastly different properties than other modalities, and therefore requires different usability measures.
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