1,291 research outputs found
Construction and measurements of a vacuum-swing-adsorption radon-mitigation system
Long-lived alpha and beta emitters in the Rn decay chain on (and
near) detector surfaces may be the limiting background in many experiments
attempting to detect dark matter or neutrinoless double-beta decay, and in
screening detectors. In order to reduce backgrounds from radon-daughter
plate-out onto the wires of the BetaCage during its assembly, an
ultra-low-radon cleanroom is being commissioned at Syracuse University using a
vacuum-swing-adsorption radon-mitigation system. The radon filter shows
~20 reduction at its output, from 7.470.56 to 0.370.12
Bq/m, and the cleanroom radon activity meets project requirements, with a
lowest achieved value consistent with that of the filter, and levels
consistently < 2 Bq/m.Comment: 5 pages, 3 figures, Proceedings of Low Radioactivity Techniques (LRT)
2013, Gran Sasso, Italy, April 10-12, 201
Need For Leadership: Empirical Evidence From Pakistan
Abundant research has been carried out throughout the years to explore the moderator effect of situational variables in leadership literature around the globe. However, this area is the most neglected area among the behavioral scientists of Pakistan. Therefore, the present study seeks to find out the moderator effect of need for leadership in relation with leadership characteristics on subordinates’ behavioral outcomes using the need for leadership framework of de Vries (1997) in Pakistani work settings. As a result, the practical implications of the findings are discussed
Lafora Disease Masquerading as Hepatic Dysfunction
Lafora disease is fatal intractable progressive myoclonic epilepsy. It is frequently characterized by epileptic seizures, difficulty walking, muscle spasms, and dementia in late childhood or adolescence. We chronicle here an unusual case of an asymptomatic young male soccer player who presented with elevated liver enzymes. Neurological examination was unremarkable. The diagnostic workup for hepatitis, infectious etiologies, autoimmune disorders, hemochromatosis, Wilson\u27s disease, alpha-1 antitrypsin deficiency, and other related diseases was inconclusive. He subsequently underwent an uneventful percutaneous liver biopsy. Based on the pathognomonic histopathological findings, Lafora disease was considered the likely etiology. The present study is a unique illustration of this rare disorder initially manifesting with abnormal liver enzymes. It underscores the importance of clinical suspicion of Lafora disease in cases with unexplained hepatic dysfunction. Prompt liver biopsy and genetic testing should be performed to antedate the onset of symptoms in these patients
Penerapan Metode Electrical Resistivity Tomography (Ert) Untuk Mengetahui Bidang Longsor Pada Model Lereng
Longsoran yang terjadi pada lereng merupakan salah satu permasalahan utama di bidang geoteknik. Untuk melakukan perbaikan maupun perkuatan pada lereng perlunya dilakukan penyelidikan tanah guna memprediksi bidang longsor pada lereng tersebut sehingga perbaikan dan perkuatan yang dilakukan dapat dilakukan secara efektif. Salah satu alternatif metode yang dapat dipakai adalah penggunan metode geofisika, seperti geolistrik khususnya Electrical Resistivity Tomography (ERT). Penyelidikan ini diwujudkan dengan dembuatan suatu model fisik lereng dengan variasi keretakan dan diberikan pembebanan sebanyak 5 macam pembebanan. Tujuan utama dari penelitian ini adalah untuk mengetahui penggunaan metode penyelidikan geolistrik untuk mengetahui bidang longsor. Berdasarkan penelitian ini bidang longsor ataupun retakan terdapat pada lapisan dengan nilai resistivitas yang memiliki nilai resistivitas berbeda cukup signifikan
- …