Evaluation of distributed gas cooling of pressurized PAFC for utility power generation

A proof-of-concept test for a gas-cooled pressurized phosphoric acid fuel cell is described. After initial feasibility studies in short stacks, two 10 kW stacks are tested. Progress includes: (1) completion of design of the test stations with a recirculating gas cooling loop; (2) atmospheric testing of the baseline stack

Radius Stabilization in a Supersymmetric Warped Compactification

A supersymmetric (SUSY) model of radius stabilization is constructed for the S^1/Z_2 warped compactifications with a hypermultiplet in five dimensions. Requiring the continuity of scalar field across the boundaries, we obtain radius stabilization preserving SUSY, realizing the SUSY extension of the Goldberger-Wise mechanism. Even if we allow discontinuities of the Z_2 odd field across the boundary, we always obtain SUSY preservation but obtain the radius stabilization only when the discontinuity is fixed by other mechanism.Comment: 6 pages, revtex, Errors of the products of distributions are corrected and the results are reanalyzed, references added, final version to appear in PR

Posterior approach for hip arthroplasty: a single surgeon series

Background: Approaches for hip arthroplasty are varied dependent on surgeon training and each have their postulated advantages and disadvantages.Objective: Presentation of a case series of primary and revision arthroplasty utilizing the posterior approach.Design: Retrospective case series.Methodology: Records of arthroplasties performed by the primary author at Kikuyu Orthopaedic Rehabilitation Centre over a period of one year were queried and data extracted and recorded.Results: A total of 36 arthroplasties were performed using the posterior approach. The average age was 66 years with a 1:1.6 male female ratio. The most common indication was osteoarthritis. Two complications were  encountered; surgical site infection and post-operative cerebrovascular accident. There were no dislocations.Conclusions: The posterior approach is a viable approach for hip arthroplasty for use in Kenya with low complication rates

Calcium, Magnesium, Iron, Zinc and Copper, Compositions of Human Milk from Populations with Cereal and ‘Enset’ Based Diets

Backround: As breast milk is normally the only source of food in the early stages of life, the dietary levels of the essential elements in the milk of lactating mothers are significantly important. Ethiopia is a country of many nations and nationalities with distinct dietary habits. This variation in food habit may result in the variation of the nutritional quality of milk of lactating mothers who live in different part of the country, which in turn may affect the intake of nutrients by breast-fed infants. Therefore, a cross-sectional study of the levels of Ca, Mg, Fe, Zn and Cu in milk of mothers from societies with cereal and ‘enset’ based dietary habits was carried out to assess the influence of maternal diet on the levels of the elements in human milk.Methods: Milk samples were collected from 27 voluntary mothers in Jimma and in 18 rural areas of Welkite. Breast milk samples were collected within four days postpartum and the concentrations of the elements were determined by using FAAS.Results: Average concentrations (mg/L) of the elements determined in the milk of mothers from Jimma and rural Welkite respectively were: Ca (758 ± 107, 579 ± 168); Mg (22.6 ± 7.87, 30.5 ± 13.4); Fe (0.50 ± 0.08, 0.41 ± 0.17); Zn (2.3 ± 1.2, 2.49 ± 0.88) and Cu (0.28 ± 0.14, 0.16 ± 0.08).Conclusions: Milk samples from Jimma were found to have significantly higher levels of Ca and Cu than those of rural Welkite (P < 0.05). Breast milk Ca and Cu levels were thus found to be influenced by dietary intake.Keywords: Human milk, Ethiopia, Welkite, Jimma, Essential elements, ‘Teff’, ‘Enset’

“I’m Going to Live My Life Freely”: Authenticity as an Indicator of Belonging Among Urban Latinx LGBTQ+ Youth

While there is a growing body of scholarship on the experiences of LGBTQ+ youth in school and community settings, less is known about Latinx LGBTQ+ youth specifically. In response, this phenomenological study examined the experiences of eight Latinx LGBTQ+ youth relative to school and community belonging, with a specific focus on urban environments, using intersectionality and minority stress frameworks, and Lee and Robbins’ operational definition of belongingness. Three overarching themes emerged from the data: (a) navigating challenges, (b) the importance of an inclusive climate, and (c) thriving through adversity. Further, authenticity was identified as an additional indicator of belonging among Latinx LGBTQ+ youth. This article reviews the study’s findings, explores implications for Extension research and practice, and suggests strategies for educators and youth-serving professionals

Perubahan Penggunaan Lahan Kota Makassar Tahun 1990-2010

ABSTRAK: Pertumbuhan penduduk yang sangat pesat berimplikasi terhadap peningkatan berbagai kebutuhan seperti perumahan, industri, kesehatan, pendidikan, dan lain-lain. Selanjutnya, peningkatan berbagai kebutuhan hidup tersebut menyebabkan terjadinya perubahan penggunaan lahan/ruang perkotaan, seperti rahan terbuka (RT) dan ruang terbuka hijau (RTH) menjadi lahan perumahan, lahan industri, perkantoran, sekolah dan lain-lain. Analisis perubahan penggunaan lahan di Kota Makassar dilakukan dengan menggunakan sistim informasi geografi (SIG). Data yang digunakan adalah Citra Landsat tahun 1990, 2000, dan 2010. Hasil kajian menunjukkan bahwa perubahan penggunaan lahan di Kota Makassar dalam kurun waktu 30 tahun menunjukkan hasil signifikan, dengan perubahan penggunaan lahan terbesar terjadi pada lahan tegalan/ladang menjadi kawasan terbangun dengan keluasan adalah 10.000 Ha atau 23.91%. Keadaan ini berlangsung terus hingga masa kini. Oleh karena itu, ia memberi dampak yang besar terhadap lingkungan sekitar seperti terjadinya peningkatan suhu kota, yang menyebabkan semakin berkurangnya tingkat kenyamanan penduduk Kota Makassar. Oleh karena itu, perlu dilaksanakan pembangunan yang berkelanjutan, sehingga lingkungan tetap lestari

Product Evaluation of Carbamazepine 200mg Controlled Release Tablets using an in vitro-in vivo Correlation Simulation Model

Evaluation of the dissolution characteristics of drugs and their bioavailability can be conducted using an in vitro-in vivo correlation model. This can help in assessing the products available in the market for quality. Random testing in post-marketing surveillance would gauge the quality of the drug products. This study involved evaluation of three batches of controlled-release carbamazepine, Tegretol 200mg CR® tablets through dissolution tests from which a dissolution profile and blood concentration-time profile were derived. The in vitro-in vivo correlation simulation model was used to determine the Area Under Curve and Maximum Plasma Concentration and demonstrate bioequivalence of the product batches. The three batches exhibited similarity upon statistical analysis. The results also correspond to the values obtained in literature from bioequivalence studies. In vitro-in vivo correlation can thus be a useful instrument in pharmacovigilance for marketed drug products. Keywords: IVIVC, carbamazepine, bioavailability, pharmacokinetic parameters, dissolutio

Anti-inflammatory sesquiterpenes from Curcuma zedoaria

This is a preprint of an article whose final and definitive form has been published in the NATURAL PRODUCT RESEARCH © 2006 copyright Taylor & Francis; NATURAL PRODUCT RESEARCH is available online at: http://www.informaworld.com/openurl?genre=article&issn=1478-6419&volume=20&issue=7&spage=680ArticleNATURAL PRODUCT RESEARCH. 20(7): 680-685 (2006)journal articl

Koori voices: Self-harm, suicide attempts, arrests and substance use among Aboriginal and Torres Strait Islander adolescents following residential treatment

Background: Complex interacting social, economic and historical factors influence the availability and uptake of alcohol and drugs, including among Indigenous communities. Self-harm and suicide as well as homelessness and incarceration, can both precede and result from drug and alcohol use. Rates of self-harm, suicide and incarceration among Aboriginal and Torres Strait Islander people in Australia are among the highest in the world and drug and alcohol treatment programs need to address these underlying complexities. This study examines whether an 'holistic' residential drug and alcohol treatment program for adolescents, with over 30% of clients identifying as Aboriginal and Torres Strait Islander, can improve outcomes post-discharge, including reducing self-harm, suicide attempts, arrests and alcohol and drug use. The program addresses substance use, mental health, employment, accommodation, social/community and family life. Program admission and 3 months' post-discharge data from 2007 to 2016 were analysed. Results: From 2007 to 2016, 619 Aboriginal and Torres Strait Islander young people were admitted to the program; 247 stayed in the program for 30 days or more; 89 were successfully followed up three months post-discharge to determine whether there was a significant improvement from baseline using the McNemar's Test and the Wilcoxon Signed Ranks Test. On admission, 18 people (20%) of the study population reported attempting suicide in the last 3 months and 23 people (30%) reported self-harm. Most had been engaged in the criminal justice system, with 67 people (75%) having been to court and 62 people (70%) arrested one or more times in the past 3 months, with 35 people (41%) in unstable housing, reporting having lived in three or more places in the previous 6 months. At 3 months post-treatment, all (n = 18) who reported suicide attempts in the 3 months prior to admission reported no attempts in the prior 3 months at follow-up. There was also a significant reduction in self-harm with 23 young people out of the 27 who reported self-harm at baseline not reporting self-harm at follow up (85%) and in the proportion of adolescents who reported using cannabis, amphetamines and alcohol, as well as a reduction in the proportion who reported being arrested. Conclusions: The findings provide support for an 'holistic' residential treatment program as an approach to improve health and related outcomes for Aboriginal and Torres Strait Islander young people. In addition to a focus on multiple aspects of a young person's life in treatment, culturally relevant modes of treatment and support should be a future focus to further strengthen programs when Aboriginal and Torres Strait Islander young people are over-represented in the client group

Recurrent traumatic posterior hip dislocation in labral avulsion: case report

Recurrent traumatic hip dislocation in adults is very rare. It is often associated with fractures of the acetabulum wall and or column. There have been very few cases of recurrent traumatic hip dislocation secondary to avulsion of the acetabular labrum. We report a patient with traumatic recurrent posterior hip dislocation who had acetabular labrum avulsion, with torn short external rotators, who benefitted from surgical repair of the labrum, with plate augmentation. Clinicians should be wary of post traumatic labral tears as a rare cause of recurrent posterior hip dislocation in the absence of acetabular fractures. They are amenable to surgical repair.Key words: Recurrent hip dislocation, Labrum avulsio