196,753 research outputs found
The development of high field magnets utilizing Bi-2212 wind & react insert coils
No full textWind & react Bi-2212 inserts have been manufactured and tested inside a wide-bore NbTi-Nb3Sn magnet providing a background field up to 20T at 4.2K. A pair of six-layer concentric coils both achieved critical currents of 350 A (JE = 200 A/mm2) in a 20T background field. A thicker 14-layer insert made from 119m of round wire had a critical quench current IQ of 287A (JE = 162 A/mm2) at the same field and contributed to a combined central field of 22.5 T. This is a record for a fully superconducting magnet at 4.2 K. The 14-layer coil, equipped with an external protective shunt, was used for an extensive series of quench measurements and endured >150 quenches without damage. Minimum quench energies were found to be in the range of 200-500mJ in background fields of 15-20T when the coil carried 70-95% of its critical quench current
The impact of the blockade in creating and strengthening dominant positions that may violate the competition law in Qatar
No full textبدأت آثار الحصار الذي فرضته بعض الدول على دولة قطر تظهر ملامحه عن قرب. واحدة من هذه الآثار هي ما نتج عن إغلاق للحدود البرية والجوية من قطع لتدفق البضائع والمنتجات إلى دولة قطر بهدف إرباك الأسواق وتفريغها من المنتجات وإشاعة الهلع بين المواطنين والمقيمين. مما لا شك فيه أنّ توقّف حركة السّلع والبضائع "من" و"عبر" دول الحصار سيُساهمُ في تقليل الموارد الواردة للشركات القطريّة، وسَيُقلِّلُ كذلك من فرص المنافسة، مِمّا يعني تِباعًا خلق أو تعزيز فرضيّات إنشاء مراكز مهيمنة قد تكون مخالفة لقانون المنافسة إذا أسيء استغلال هذه المراكز المهيمنة. لكلّ ذلك؛ لا بد من بيان الدور الجوهري الذي يلعبه الحصار في خلق وتعزيز المراكز المهيمنة، مع إبراز الدور الواجب اتّخاذه من طرف سلطات المنافسة في دولة قطر لمنع إساءة استغلال هذه المراكز بما يُخالف القانون لقطري لحماية المنافسة ومنع الممارسات الاحتكارية.The features of the effects of the blockade imposed by some countries on the State of Qatar have begun to show. One of these effects is the results of the land, sea and air blockade from the disruption of the flow of goods and products to the State of Qatar in order to disrupt the markets, unload them of products, and spread panic among citizens and residents. Undoubtedly, the cessation of the transaction of goods and products “from” and “through” the blockading states may contribute to reducing the resources received by the Qatari market and will reduce the chances of competition. This will lead to creating or strengthening the presumptions of establishing dominant positions that may be contrary to the competition law if these dominant positions were abused. Thus, the fundamental role played by the blockade in creating and strengthening dominant positions must be clarified, while highlighting the role to be taken by the competition authorities in the State of Qatar to prevent the misuse of these positions in contravention of the Qatari law of Protection of Competition and Prevention of Monopolistic Practices
sj-jpg-1-cpc-10.1177_10556656211066435 - Supplemental material for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications
No full textSupplemental material, sj-jpg-1-cpc-10.1177_10556656211066435 for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications by Omar S. Al Abyad, Beyhan Annan, Antonio Melhem, Elsa M. Chahine, Elie P. Ramly, Raj M. Vyas and Usama S. Hamdan in The Cleft Palate-Craniofacial Journal</p
sj-jpg-3-cpc-10.1177_10556656211066435 - Supplemental material for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications
No full textSupplemental material, sj-jpg-3-cpc-10.1177_10556656211066435 for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications by Omar S. Al Abyad, Beyhan Annan, Antonio Melhem, Elsa M. Chahine, Elie P. Ramly, Raj M. Vyas and Usama S. Hamdan in The Cleft Palate-Craniofacial Journal</p
sj-jpg-4-cpc-10.1177_10556656211066435 - Supplemental material for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications
No full textSupplemental material, sj-jpg-4-cpc-10.1177_10556656211066435 for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications by Omar S. Al Abyad, Beyhan Annan, Antonio Melhem, Elsa M. Chahine, Elie P. Ramly, Raj M. Vyas and Usama S. Hamdan in The Cleft Palate-Craniofacial Journal</p
sj-jpg-2-cpc-10.1177_10556656211066435 - Supplemental material for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications
No full textSupplemental material, sj-jpg-2-cpc-10.1177_10556656211066435 for Application of Safety Protocols for International Cleft Outreach Programs During the COVID-19 Pandemic: Global Smile Foundation Precaution Guidelines and Implications by Omar S. Al Abyad, Beyhan Annan, Antonio Melhem, Elsa M. Chahine, Elie P. Ramly, Raj M. Vyas and Usama S. Hamdan in The Cleft Palate-Craniofacial Journal</p
Multiple sclerosis: identification of temporal changes in brain lesions with computer-assisted detection software.
No full textMultiple sclerosis (MS) is a chronic disease with a progressing and evolving course. Serial imaging with MRI is the mainstay in monitoring and managing MS patients. In this work we demonstrate the performance of a locally developed computer-assisted detection (CAD) software used to track temporal changes in brain MS lesions. CAD tracks changes in T2-bright MS lesions between two time points on a 3D high-resolution isotropic FLAIR MR sequence of the brain acquired at 3 Tesla. The program consists of an image-processing pipeline, and displays scrollable difference maps used as an aid to the neuroradiologist for assessing lesional change. To assess the value of the software we have compared diagnostic accuracy and duration of interpretation of the CAD-assisted and routine clinical interpretations in 98 randomly chosen, paired MR examinations from 88 patients (68 women, 20 men, mean age 43.5, age range 21-75) with a diagnosis of definite MS. The ground truth was determined by a three-expert panel. In case-wise analysis, CAD interpretation showed higher sensitivity than a clinical report (87% vs 77%, respectively). Lesion-wise analysis demonstrated improved sensitivity of CAD over a routine clinical interpretation of 40%-48%. Mean software-assisted interpretation time was 2.7 min. Our study demonstrates the potential of including CAD software in the workflow of neuroradiology practice for the detection of MS lesional change. Automated quantification of temporal change in MS lesion load may also be used in clinical research, e.g., in drug trials
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
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