Made available in DSpace on 2014-06-11T19:22:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-22Bitstream added on 2014-06-13T20:28:21Z : No. of bitstreams: 1 gatto_ar_me_botfm.pdf: 1016238 bytes, checksum: 8616d5f78187c09a64363d4593887258 (MD5) / A dificuldade de deglutição é um déficit comum em pacientes após Acidente Vascular Encefálico (AVE). Estudos com esta população evidenciam atraso no início da resposta faríngea e um aumento do tempo de trânsito oral, quando comparada com indivíduos normais. Verificou-se que a redução destes tempos poderia reduzir o risco de penetração e/ou aspiração laringotraqueal e, consequentemente, diminuir o risco de complicações broncopulmonares. Portanto este estudo tem por objetivo verificar o efeito do sabor azedo e da temperatura fria no tempo de trânsito oral da deglutição, no tempo de resposta faríngea e no escape oral posterior. Participaram deste estudo 52 indivíduos após Acidente Vascular Encefálico isquêmico hemisférico, tanto com lesão à direita (D) como à esquerda (E), e disfagia orofaríngea de grau leve a moderado, sendo 28 do gênero masculino e 24 do gênero feminino, de 50 a 80 anos (66 anos). Para a análise dos tempos de deglutição foi realizada a videofluoroscopia da deglutição. Cada indivíduo foi avaliado durante a deglutição de bolo na consistência pastosa, oferecido em colher, com 5 ml cada, sendo ao todo 4 estímulos diferentes (natural, gelado, azedo e azedo-gelado). Os indivíduos foram divididos em dois grupos conforme a seqüência dessa oferta: Grupo 1- estímulos oferecidos aleatoriamente (24 indivíduos), grupo 2 - estímulos oferecidos na seguinte ordem: natural, gelado, azedo e azedogelado (28 indivíduos). Após o exame, através de software específico, foram realizadas as medidas de deslocamento do bolo alimentar. Foram mensurados o tempo de trânsito oral (TTO), o tempo de trânsito oral total (TTOT), o tempo de início da resposta faríngea (IRF) e o escape posterior. Os resultados mostraram que a associação entre os estímulos azedo e gelado provocou mudanças significantes no TTOT e no TTO, no grupo de indivíduos... / Dysphagia is a common deficit in patients after stroke. Comparing with normal subjects, studies in this population show both a delay in swallowing initiation and an increase in oral transit time. It is postulated that the remediation of, or reduction of these times could reduce the bronchopulmonary complications risk. Therefore, the goal of this study is to verify the effect of sour taste and cold temperature in the oral phase of swallow, swallow response time, and measure the position of the head of the bolus at the swallowing initiation (posterior oral spillage). Participated in these study 52 patients with hemisphere stroke, as with right lesion as with left lesion, with mild to moderate oropharyngeal dysphagia, being 28 males and 24 females, 50 to 80 years (median 66 years). The stroke ictus ranged from 1 to 30 days (median 6 days). All subjects were assessed by objective examination of swallowing. To measure the swallow times a videofluoroscopic exam was used. During the videofluoroscopic, 4 spoons were offered, with 5 milliliters each of thickened substance (natural, cold, sour and sour-cold). The subjects were divided in two specific groups according to the offering sequence: group 1 – random offer (24 subjects), group 2 – sequential offer: natural, cold, sour and sour-cold (28 subjects). The videofluoroscopic images were digitalized and the measurement of the time of displacement of the bolus in oral phase of swallowing was done by specific software. It was measured the oral transit time (OTT), the total oral transit time (TOTT), the swallow response time (SRT), and the posterior oral spillage. The results showed that, in subjects from group 2, the OTT as well as the TOTT of swallowing were significantly lower during swallowing of the bolus with sour-cold stimulus, than when other stimulus offered separately. Spite of the tendency of reduction in both initial swallow response... (Complete abstract click electronic access below)

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Hops are one of the four main ingredients used to produce beer. Many studies have been done to analyze the science behind growing and harvesting hops, creating hop hybrids, and how to brew beer with hops. However, there has been little research done revolving around the economic demand and supply model of the hop market. The objectives of this study are to create an econometric model of supply and demand of hops in the United States from 1981 to 2012, and to identify important exogenous variables that explain the supply and demand of hops using the two-stage least squares (2SLS) method of analysis. Using the 2SLS method, the demand model yielded that the US beer production variable is significant at the 10 percent level. For every 1 percent change in US beer production, there will be a 6.25 percent change in quantity of hops demanded in the same direction. The supply model showed that US acreage is significant at the 1 percent level. For every 1 percent change in US acreage, there will be a 0.889 percent change in quantity of hops supplied in the same direction. The implications of this study are viewed in relation to both producers and consumers.

Breast cancer is the 2nd leading cause of death among women. While a significant amount of research has been done to understand the different disparities related to this disease, there is still more to learn about the relationship between a person's nationality and the staging of breast cancer. Using the Surveillance, Epidemiology, and End Results Program as the data source, this retrospective cohort study was aimed at assessing late-stage breast cancer among Caribbean immigrants, specifically comparing Haitian women with Americans and other immigrant populations in the United States. The research questions addressed the link between nationality and the likelihood of late-stage breast cancer diagnosis as well as the risk factors associated with an advanced stage of breast cancer. Findings from logistic regression analyses indicated no statistically significant difference in Stage IV diagnosis between women born in Haiti and U.S.-born women, while the converse was true for women born in other foreign countries. The results also suggested that race, Hispanic ethnicity, marital status, insurance coverage, being unemployed, and language isolation were significant predictors of late-stage breast cancer diagnosis (p < 0.05). When stratifying the analyses by nationality, marital status and poverty were the common predictors of advanced breast cancer diagnosis among Haitian, foreign-born, and U.S.-born women. The observed disparities confirm the need for additional efforts that seek to improve screening rates among underserved groups and ultimately reduce the burden of late-stage breast cancer.

acase@tulane.edu

A comprehensive portfolio by Cassandra Malmquist with a focus in Lighting Design in theatre and dance at the University of Iowa.

Rome Sweet Rome, written, directed, composed, and choreographed by the Q Brothers Collective, is a hip-hop musical adaptation of William Shakespeare’s Julius Caesar. The University of Iowa Department of Theatre Arts produced Rome Sweet Rome in the fall of 2016 as part of the Mainstage season and the 2016-2017 Partnership in the Arts production. This thesis explores the unique production process of Rome Sweet Rome from the stage manager’s perspective. Since leadership, communication, and organization are essential attributes of stage managers, Samantha Paradis’ personal leadership, communication, and organization goals and outcomes for this production are addressed. Because theatre and life can be unpredictable this paper includes the analysis of new challenges that arose. Paradis concludes her exploration with final thoughts on the production and her development as a Graduate Stage Manager at the University of Iowa.

Seed, written by Scott Bradley and directed by Patrick Du Laney, is a play that was written to explore the legacy of suicide in the Midwest Region and its specific correlation to the disappearance of the family farm. The University of Iowa Department of Theatre Arts selected Seed to appear as a part of the annual Iowa New Play Festival in May of 2017. This thesis examines the specific challenges faced during the production process as relates to the production as a whole and those faced from the stage management perspective. This was an influential production to the stage manager, Lindsay Warnick, so connections between these challenges are looked at in two ways: how they played a role in Lindsay’s development as a stage manager and her growth as an individual.

Lima bean.is one of the important vegetable crops in most of the countries where it is grown, including the United States of America. This crop is harvested for its green beans, which can also be processed, or allowed to mature as "dry beans." The practice of growing lima beans !or processing has indicated that quality and yield are influenced by many factors, among which the stage of maturity at time of harvest is possibly the most important. Lima beans continue to increase in size until fully matured, but most processors agree th.at the green beans attain maximum quality prior to that stage, after which the yield increases while the quality decreases. In actual practice, harvesting should occur at the time the greatest yield of acceptable quality could be obtained. Maturity is thus an extremely important factor to processors interested in satisfying the consumer's demand !or high quality. The canning trade (16) still has no further measurements !or grading the quality of raw lima beans than the visual test, which depends upon the flavor, texture, and freedom from defects. It would seem, therefore, th.at more exact information is needed on the relationship of maturity to edible quality in lima beans. In studies with other vegetables it has been shown that certain chemical and physiological changes are involved as the crop matures. Pollard, Wilcox, and Peterson (5) found with peas that the starch content increased as the peas advanced in maturity, while ascorbic acid content decreased with maturity. Henry, Wilcox, Pollard, and Lindquist (15) found that in sweet corn the total and reducing sugars decreased as sweet corn advanced in maturity while the total solids and alcohol insoluble solids increased. These changes often influence quality adversely. To determine more fully the factors affecting the relationship of stage of maturity and quality in lima beans, this experiment was conducted in 1953 at the Farmington Field Station of the Utah Agricultural Experiment Station.

Membrane processes have found increasing industrial applications worldwide. For membrane processes to deliver their desired performances and mitigate the effect of disturbances, automatic controllers must be installed. Before the installation of controllers, operability analysis is a crucial step to evaluate how well the processes can be controlled, and to determine how process design can be improved for better control. However, existing applications of operability analysis in membrane processes are limited. This thesis extends the application of operability analysis to a multiple-stage membrane process, exemplified by a detailed case study of a 12-stage industrial whey ultrafiltration (UF) process. Process dynamic models are determined to describe the transient behaviour of process performance caused by disturbances and long-term fouling. Steady-state nonlinear operability analysis is conducted to identify inherent limitations of the process. Using the process dynamic models, dynamic operability analysis is performed to determine the effects of dynamic behaviour on process and controller design. Steady-state operability analysis shows that the whey UF process is not able to mitigate the effects of high concentrations of true protein in the fresh whey feed. The ability of the process to mitigate the effects of disturbances is also adversely affected by long-term membrane fouling. Mid-run washing is therefore necessary to restore control performance after long periods of operation. Besides demonstrating the adverse effects of long-term membrane fouling on operability, dynamic operability analysis identifies the manipulated variables that can deliver the best control performance. It also indicates that control performance can be improved by installing equipment (e.g. buffer tanks) upstream of the process. Dynamic operability analysis shows that recycling of the retentate stream has a profound effect on the plant-wide dynamics and reduces significantly the achievable speed of process response under automatic control. However, retentate recycling is essential during operation to minimize membrane fouling. Although reducing the number of stages in the whey UF process can improve the achievable speed of process response under automatic control, process performance will fluctuate significantly from its desired level. A trade-off therefore exists between process performance and control performance that should be addressed during process and controller design.