223 research outputs found
Thermal management of electronics: An experimental analysis of triangular, rectangular and circular pin-fin heat sinks for various PCMs
No full textThis study implies experimental investigation for optimization of heat transfer in electronic integrated circuits using close packed phase change materials (PCMs) filled pin-fin heat sinks. The aim of this study is to find the most efficient pin-fin configuration filled with optimum PCM to extend the operating range of electronic circuits. The experimental methodology is based upon variation of pin-fin configurations in rectangular, round and triangular cross-sections. Each configuration is allowed a pin-fin volumetric percentage of 9%. For analysis using PCM a volume fraction of 90% is maintained and six PCMs with different thermo-physical properties (varying melting temperatures, latent heats and heat capacities) are selected. These include paraffin wax, RT-54, RT-44, RT-35HC, SP-31 and n-eicosane. Moreover, the power levels mimicking heat input range between 5 W and 8 W. The resulting information is analyzed for the performance of a heat sink with and without PCM. Besides that, PCM ascendency is manipulated in terms of operational time, enhancement ratios, Stefan number and storage ratio. The outcomes suggest that triangular pin-fins are found to be the most effective pin-fin configuration for heat transfer both with and without PCM
Идея антропологии ислама
Full text linkIn his article The Idea of an Anthropology of Islam, written in 1986, Talal Asad focuses on the conceptual basis of the literature on this problem. What, he asks, exactly, is the anthropology of Islam? What is its object of investigation? There appear to be at least three common answers to the question, according to the author: (1) that in the final analysis there is no such theoretical object as Islam; (2) that Islam is the anthropologist’s label for a heterogeneous collection of items, each of which has been designated Islamic by informants; (3) that Islam is a distinctive historical totality which organizes various aspects of social life. We will look briefly at the first two answers, and then examine at length the third, which is in principle the most interesting, even though it is not acceptable. Talal Asad criticises the textualization of social life, and redirects analysis away from the interpretation of behaviors and toward inquiry into the relation of practices to a discursive tradition. Asad’s new concept became important not only for anthropology of Islam, but also for a number of fields, concerned with ethics and religion in modernity: anthropology, religious studies, postcolonial studies, critical theory. Despite it was written three decades ago, the article is still a must read for any scholar in the field of Islamic Studies, especially in Russia.На протяжении десятилетий Талал Асад, в данное время занимающий должность профессора антропологии в Городском университете Нью-Йорка, в своих работах о религии и её взаимосвязи с острыми вопросами современной жизни постоянно опровергал доминирующие парадигмы антропологии. Критикуя текстуализацию социальной жизни, Асад переориентировал направление анализа от интерпретации поведения к проблеме отношений между практиками и тем, что он назвал «дискурсивной традицией». Асад создал эту концепцию в рамках исследований антропологии ислама, но она приобрела важную роль во множестве областей, связанных с этикой и религией эпохи модерна (антропология, религиоведение, постколониальные исследования, критическая теория). Впервые концепция получила развитие в публикуемой ниже статье, написанной в 1986 году. Несмотря на то, что прошло более 30 лет с момента публикации, текст до сих пор более чем актуален, особенно в российском контексте, не избалованном качественными антропологическими и социологическими работами в области исламоведения. Перевод статьи печатается с любезного согласия самого автора и Центра современных арабских исследований Джорджтаунского университета, для которого она было подготовлена
Treating Pulmonary Arterial Hypertension With Sotatercept: A Meta-Analysis
Full text link: Pulmonary arterial hypertension (PAH) results from proliferative remodeling and narrowing of the pulmonary vasculature. Sotatercept is a first-in-class fusion protein that has recently garnered attention for showing improvements in patients with PAH. This meta-analysis of randomized controlled trials (RCTs) assesses the overall efficacy of Sotatercept in treating PAH. PubMed, Google Scholar, and Clinicaltrials.gov were searched using relevant keywords and MeSH terms. Studies were included if RCTs compared Sotatercept with placebo in patients with PAH. Our comprehensive literature search yielded 3,127 results, of which two RCTs with 429 patients were included in this meta-analysis. The patients were on background therapy for PAH. Results of the meta-analysis show that when compared with placebo, Sotatercept improved the six-minute walk distance (mean difference [MD] 34.99; 95% confidence interval [CI] 19.02-50.95; P < 0.0001), the World Health Organization (WHO) functional class (odds ratio [OR] 2.50; 95% CI 1.50-4.15; P = 0.0004), and pulmonary vascular resistance (PVR, MD -253.90; 95% CI -356.05 to -151.75; P < 0.00001). However, reduction in N-terminal pro-B-type natriuretic peptide (NT-proBNP, MD -1563.14; 95% CI -3271.93 to 145.65; P = 0.07) was not statistically significant in the Sotatercept group versus placebo. In conclusion, Sotatercept improves the six-minute walk distance, WHO functional class, and PVR in patients with PAH receiving background therapy. However, the effect on NT-proBNP levels was not statistically significant. More research is needed to assess the clinical relevance of these findings
Prediction of CRR using dynamic cone penetrometer
No full textCalifornia Bearing Ratio (CBR) value is very popular among highway engineers as a soil support value for pavement design. However, since CBR cannot be easily determined in the field, prediction of CBR values from other soil support tests such as Dynamic Cone Penetrometer (DCP) is a valuable alternative. In this study penetration depth (D) of the dynamic cone penetrometer from the laboratory prepared samples were correlated with laboratory CBR's for a number of different soil types ranging from clay to gravely sand. Unique models were found for each type of soil with good coefficient of determination (R2) and low standard error of estimate. The combined data gave also a correlation between CBR and D which compare very well with those obtained from other studies.Corresponding Author:
Prof. Talal Obeid Al-Refeai, Civil Engineering Department, College of Engineering, P.O. Box 800, Riyadh-11421, Saudi Arabia.
Email: [email protected]
Investigating the platinum electrode surface during Kolbe electrolysis of acetic acid
Full text linkPlatinum is commonly applied as the anode material for Kolbe electrolysis of carboxylic acids thanks to its superior performance. Literature claims that the formation of a barrier layer on the Pt anode in carboxylic acid electrolyte suppresses the competing oxygen evolution and promotes anodic decarboxylation. In this work, we show by using a combination of complementary in situ and ex situ surface sensitive techniques, that the presence of acetate ions also prevents the formation of a passive oxide layer on the platinum surface at high anodic potentials even in aqueous electrolyte. Furthermore, Pt dissolves actively under these conditions, challenging the technical implementation of Kolbe electrolysis. Future studies exploring the activity-structure-stability relation of Pt are required to increase the economic viability of Kolbe electrolysis
Tren Berjilbab Kalangan Muda Muslimah Urban di Yogyakarta: Tinjauan Antropologi Islam Talal Asad
Full text linkThis article examines the hijab trend among young urban Muslim women in Yogyakarta. This trend in practice is not only related to religious practice. This trend is also related to the existentialist aspect, namely identity as a true Muslim woman. The choice of urban Muslim women's hijab, both size, and model, is an indicator of the relationship of existentialist aspects to this trend. This research uses qualitative methods with this type of field study. To see it, the author uses the Islamic anthropology Talal Asad. Two points are outlined; first, what and how is the basis of Islamic reason (Qur'an and Hadith) when talking about hijab; second, how and to what extent discourse and social relations affect the meaning of the veiled trend. As a result, Q. 24:31 and Q. 33:59 are two verses of the Qur'an that specifically speak of this term. Both are used in legitimizing the legal status of the hijab (closing the aurat). Understanding the two verses has two tendencies, some interpret the verse in a strict sense; textual, others tend to be more adjective; non-textual. The trend of hijab among young urban Muslim women in Yogyakarta has a meaning not only limited to the problem of carrying out religious orders as stated in the Qur'an, but also related to identity status, the ideology that accompanies it, and the process of commodification
Human rights and the collateral damage of neoliberalism
No full textThis article is a commentary on the article: “What do Human Rights Do? An Anthropological Inquiry” by Talal Asad, Theory & Event, Vol. 4, No. 4 (2000). Talal Asad’s essay was published in the year 2000 in the immediate aftermath of the NATO bombing campaign against Serbia. The author examines Asad’s essay on human rights in the context of an account of the transformation of human rights discourses in the period since its publication
Improving piezoelectric energy harvesting power bandwidth with the bias-flip method
No full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019Cataloged from student-submitted PDF version of thesis.Includes bibliographical references (pages 130-131).Vibration energy harvesters may be used as robust and reliable sources of energy for low-power devices such as wireless sensors. Of the many type of vibration energy harvesters, the piezoelectric energy harvesting device (PEHD) is favored for its high energy density and ability to self-start. As a high-Q resonant system, however, a PEHD delivers substantial power only when the ambient vibration frequency matches the PEHD's resonant frequency. Unfortunately, manufacturing uncertainties, and variations in ambient vibration frequency make this frequency match an unrealistic pursuit. The bias-flip style of power electronics is examined as a means to extend the frequency range over which considerable power can be harvested. Comprised of a switch and small inductor, bias-flip power electronics act as a much larger tunable inductor that can come very close to cancelling out the PEHD net capacitive impedance, thereby implementing a nearly complex-conjugated matched load. The bias-flip electronics showed a power improvement of ~2.5x at resonance and ~5.6x at 5 Hz away from resonance, when compared to the optimal resistive load at the end of a full-bridge rectifier. This thesis examines the Bias-flip method in detail and experimentally evaluates its effectiveness in extending power bandwidth. In the final section we test the bias-flip power electronics' resiliency in an environment with multiple vibration frequencies.by Faysal Talal Shair.M. Eng.M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Scienc
Treatment Options for Iron Deficiency Anemia in Children in Saudi Arabia
No full textAbstract: Methods: To assess the diagnostic criteria and therapeutic modalities for pediatric IDA employed by physicians in a major public healthcare facility in Riyadh, a validated questionnaire including demographic data and patient case scenarios related to diagnosis and treatment of IDA was employed. Robust regression analysis was used to identify factors associated with overall score of participants. Wide variability was observed in IDA diagnosis and therapy practices. For nutritional IDA, only 15.6% recommended no other laboratory tests in addition to CBC. The majority preferred treatment with ferrous sulfate (77.6%) divided into two doses (57.1%), but the total daily elemental iron doses varied widely from 2 to 6 mg/kg. Of all assessed factors, median score was significantly highest in pediatric hematologists compared with pediatricians, family medicine specialists and GPs; p = 0.007, and those work in tertiary care compared with those in primary care; p = 0.043. However, in multivariate robust regression analysis, overall score was only significantly associated with professional qualification [pediatric hematologist β = 13.71,95%CI 2.48–24.95, p = 0.017; pediatrician β = 1.77,95%C (− 6.05–9.59, p = 0.66; family medicine β = 2.66,95%CI-4.30-9.58, p = 0.45 compared with general practitioner]. Conclusion: Wide variations exist among physicians in diagnosis and treatment of pediatric IDA.
Keywords: Iron deficiency anemia, Treatment, Diagnosis, Assessment, Pediatric.
Title: Treatment Options for Iron Deficiency Anemia in Children in Saudi Arabia
Author: Moneerah Mohammed Alzoman, Kassem Jawad Alobaid, Norah alnashmi Alshalwi, Bedah Doujain alsuhali, Qamra Saud Alshlwai, Sally faisal alharbi, Talal ali alenazi, hessah Falah AlTamimi, Talal Marui Adiri
International Journal of Healthcare Sciences
ISSN 2348-5728 (Online)
Vol. 11, Issue 1, April 2023 - September 2023
Page No: 262-269
Research Publish Journals
Website: www.researchpublish.com
Published Date: 12-September-2023
DOI: https://doi.org/10.5281/zenodo.8337379
Paper Download Link (Source)
https://www.researchpublish.com/papers/treatment-options-for-iron-deficiency-anemia-in-children-in-saudi-arabiaInternational Journal of Healthcare Sciences, ISSN 2348-5728 (Online), Research Publish Journals, Website: www.researchpublish.co
Author Correction: Trading contact tracing efficiency for finding patient zero (Scientific Reports, (2022), 12, 1, (22582), 10.1038/s41598-022-26892-7)
No full textThe original version of this Article contained an error in Affiliation 1, which was incorrectly given as ‘New York University Abu Dhabi, Abu Dhabi, UAE’. The correct affiliation is listed below: Computer Science, Science Division, New York University Abu Dhabi, Abu Dhabi, UAE. The original Article and accompanying Supplementary Information file have been corrected.</p
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