A Health and Physical Education Program for the Mineola School

To set up a health and physical education program for Negro youth at the Southward School, Mineola, Texas. A health program that is concerned with the development of healthful behavior, desirable attitudes, and the understanding of such knowledge as will give a basis for intelligent self-direction. A physical education program planned for the instruction and participation in big muscle activities. The program is planned to take in all health and physical activities for boys and girls covering the nine months school term. This thesis will be limited to fit the desired needs of the Negro youth at the Mineola Public School, Mineola, Texas, grades from the first through the tenth. The sources of data were records of the Mineola School, the homes of some of the students, and medical records. 1. Examining of present school records 2. Questioning of parents 3. Examining of home medical records 4. Discussion with teachers 5. References of the Prairie View and Jarvis College Librarie

The effects of physical exertion on simultaneous cognitive performance

M.S.Rodney K. Schut

Absorption tails and extinction in luminescent solar concentrators

Non-ultraviolet (UV) photoexposure of luminescent solar concentrators (LSCs) can produce photoproducts that cause additional extinction at wavelengths somewhat longer than the main dye absorption peak. This photo-induced 'tails' extinction is deleterious to luminous output in collectors of useful lengths. An experimental method that enables the subdivision of tails extinction in an LSC into absorbed and scattered components is described. The relevant theory is outlined, and experimental results are presented for a polymethyl methacrylate (PMMA) LSC containing Lumogen F083 dye. For this sample, tails absorption increased significantly with outdoor exposure, while tails scattering remained constant. Further measurements indicate that LSC luminous output is around five times more sensitive to tails absorption than to fluorescence quenching. This work also indicates that merely checking for dye quenching, as is often done, can be a misleading indicator of long-term LSC output. © 2010 Elsevier B.V. All rights reserved

Uniform white light distribution with low loss from coloured LEDs using polymer doped polymer mixing rods

Colour mixing of red, green and blue (RGB) LEDs is demonstrated for a 6 cm long PMMA cylindrical rod with a transparent refractive index matched micro particle (TRIMM) diffuser sheet at the output end. Ray tracing simulations have been performed, and the output light distributions, transmittances and losses modelled and compared with experiment. Photographed and modelled colour mixing results are presented for rods with and without TRIMM sheet mixers. The TRIMM particles homogenize the light output of plain PMMA rods to form white light, with negligible backscattering. A simple method for measuring the concentration of the particles in the diffuser sheet is described, and computer modeling and analysis of TRIMM particle systems is discussed

Extraction of trapped light from luminescent solar concentration

In modern light sources such as Luminescent Solar Concentrators (LSC's) and Light Emitting Diodes (LED's), light is emitted within a light-guiding structure of high refractive index. Some of this light is trapped and will not be able to escape. Similar problems are observed when collecting fluorescent radiation in waveguides (1) and scintillation detectors (2). For lighting applications, this trapped light should be ablet o escape the light-guiding structure. In LED's this is commonly achieved witha special profile in the active zone. However, inLSC's the small light-emitting zone is remote from the large light collector so a different approach must betaken. This paper will focus on the extraction of emitted light from rectangular LSc's and propose a way of extracting a large fraction of the trapped light

Characterization of growth and antibiotic resistance in Burkholderia cepacia complex organisms

Introduction: Isolates are opportunistic pathogens within the Burkholderia cepacia Complex (Bcc). One key characteristic is that they are gram-negative, thereby making them generally resistant to hydrophobic molecules.Hypothesis: Exclusionary properties of the gram-negative outer membrane for hydrophobic substances are at least partially responsible in cases where clinical isolates of Bcc species are intrinsically resistant to hydrophobic antibacterial agents.Study Design: This hypothesis will be tested using turbidimetric growth and disk agar diffusion and bioassays.Methods: Test samples were cultivated in a shaking incubator for six hours at 180 rpm and 37 degrees Celsius to determine their respective growth rates. Spectrophotometric readings were taken every half hour to measure optical density at 620 nm wavelength. Test samples were also grown to 0.1 optical density and then streaked onto a Petri dish containing Mueller Hinton agar. Eight different antibiotic discs were dispensed onto the seeded agar surfaces and compounds were allowed to diffuse at three degrees Celsius for one hour, and then samples were incubated for 24 hours at 37 degree Celsius.Results: All Bcc isolates exhibited similar sigmoid growth curves and yielded similar amounts of biomass. Overall, they were slightly susceptible to triclosan and rifampin, and moderately to very susceptible to clindamycin and novobiocin.Conclusion: The Bcc isolates were pure cultures and exhibited similar in vitro growth characteristics. Their similar patterns of resistance and susceptibility to hydrophobic antibacterial agents suggests phenotypic outer membrane exclusion properties for hydrophobic molecules is largely conserved among the Burkholderia species examined

A Comparative Study on The Stress Levels of Black, White, Asian, and Latino Undergraduate Students

Research found that undergraduates who had poor academic performance and experienced depression and anxiety were reported to have encountered higher levels of stress than those students who persisted (Andrews & Wilding, 2004; Bennett, 2003). It also was found that minority students had a higher tendency to experience stress than their counterparts. Although, universities allocate resources to recruit minority undergraduates and provide various types of support, many universities tend to be limited in the resources for handling and detecting stressors among college students. The purpose of this research was to investigate the different levels of stress faced by minority college students and also to take a systematic look at levels of stress as reported by Black, White, Asian, and Latino students at a major urban university on the East Coast of the United States. The findings indicated no significant differences in the stress levels in regards to students’ ethnicity. It is imperative that college recruiters understand that although students may be diverse in their ethnicity, they also arrive on campus from diverse family backgrounds, meaning that a large percentage come from low income homes and many are first-generation college students. Therefore, academic leaders should consider creating programs and interventions that would provide support for students who are members of these underrepresented groups

Living Within Opaque Worlds: The Balkanized Experiences of Collegiate Minority Student-Athletes

A long-term study yielded recommendations for college-wide policies to enhance mainstreaming and ameliorate against institutional balkanization of minority student-athletes

Tailored interventions based on exhaled nitric oxide versus clinical symptoms for asthma in children and adults

BackgroundThe measurement of severity and control of asthma in both children and adults can be based on subjective or objective measures. It has been advocated that fractional exhaled nitric oxide (FeNO) can be used to monitor airway inflammation as it correlates with some markers of asthma. Interventions for asthma therapies have been traditionally based on symptoms and/or spirometry.ObjectivesTo evaluate the efficacy of tailoring asthma interventions based on exhaled nitric oxide in comparison to clinical symptoms (with or without spirometry/peak flow) for asthma related outcomes in children and adults.Search strategyWe searched the Cochrane Airways Group Specialised Register of Trials, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE and reference lists of articles. The last search was completed in February 2009.Selection criteriaAll randomised controlled comparisons of adjustment of asthma therapy based on exhaled nitric oxide compared to traditional methods (primarily clinical symptoms and spirometry/peak flow).Data collection and analysisResults of searches were reviewed against pre-determined criteria for inclusion. Relevant studies were independently selected in duplicate. Two authors independently assessed trial quality and extracted data. Authors were contacted for further information with response from one.Main resultsTwo studies have been added for this update, which now includes six (2 adults and 4 children/adolescent) studies; these studies differed in a variety of ways including definition of asthma exacerbations, FeNO cut off levels, the way in which FeNO was used to adjust therapy and duration of study. Of 1053 participants randomised, 1010 completed the trials. In the meta-analysis, there was no significant difference between groups for the primary outcome of asthma exacerbations or for other outcomes (clinical symptoms, FeNO level and spirometry). In post-hoc analysis, a significant reduction in mean final daily dose inhaled corticosteroid per adult was found in the group where treatment was based on FeNO in comparison to clinical symptoms, (mean difference -450 mcg; 95% CI -677 to 223 mcg budesonide equivalent/day). However, the total amount of inhaled corticosteroid used in one of the adult studies was 11% greater in the FeNO arm. In contrast, in the paediatric studies, there was a significant increase in inhaled corticosteroid dose in the FeNO strategy arm (mean difference of 140 mcg; 95% CI 29 to 251, mcg budesonide equivalent/day).Authors' conclusionsTailoring the dose of inhaled corticosteroids based on exhaled nitric oxide in comparison to clinical symptoms was carried out in different ways in the six studies and found only modest benefit at best and potentially higher doses of inhaled corticosteroids in children. The role of utilising exhaled nitric oxide to tailor the dose of inhaled corticosteroids cannot be routinely recommended for clinical practice at this stage and remains uncertain