4,639 research outputs found
Influence of bicrystal microstructural defects on high-transition-temperature direct-current superconducting quantum interference device
No full textFlux pinning in superconducting YBCO thin films with an artificial magnetic pinning lattice
No full textLinear regressions between the relative stimulation of TCO<sub>2</sub> efflux and sediment O<sub>2</sub> uptake (SOU) and bioirrigation intensity in flooded uncultivated (UC) and cultivated (C) soils with polychaetes added (Mar: <i>Marenzelleria viridis</i>, Ner: <i>Nereis diversicolor</i> and Sco: <i>Scoloplos armiger</i>).
No full textLinear regressions between the relative stimulation of TCO2 efflux and sediment O2 uptake (SOU) and bioirrigation intensity in flooded uncultivated (UC) and cultivated (C) soils with polychaetes added (Mar: Marenzelleria viridis, Ner: Nereis diversicolor and Sco: Scoloplos armiger).</p
Reduced port surgery for UC
Full text linkIntroduction: Reduced-port laparoscopic surgery is a novel minimally invasive surgery. However, reduced-port surgery for ulcerative colitis (UC) remains controversial. Here, we describe the clinical outcomes of single-incision plus one port laparoscopic surgery (SILS + 1) for medically uncontrolled UC. Methods: Between May 2011 and September 2014, 10 UC patients underwent SILS + 1 port surgery. All procedures were performed with the use of a SILS port and either a 5-mm or a 12-mm port placed at the planned ileostomy site. Results: The median age of patients was 32 years (range, 22-53 years). Six patients underwent two-stage SILS + 1 port restorative proctocolectomy with ileal pouch-anal anastomosis, two patients underwent SILS + 1 total proctocolectomy, and the remaining two patients underwent SILS + 1 subtotal colectomy with subsequent three-stage SILS + 1 ileal pouch-anal anastomosis. The median operative time was 363.1 min (range, 253-465 min) and the median estimated blood loss was 29 mL (range, 0-100 mL). There were no conversions or additional ports required. Two patients previously underwent SILS + 1 subtotal colectomy, and in one of those patients, SILS + 1 ileal pouch-anal anastomosis was performed successfully 6 months after the previous surgery. There were no intra-abdominal adhesions, and no extra wounds were necessary because the previous stoma site had been used to access the SILS port. The median postoperative period was 24 months, during which five patients had their ileostomies closed. No patients reported occasional minor daily soiling or the need to wear a pad. Conclusion: Reduced-port laparoscopic surgery for medically uncontrolled UC is a feasible and safe procedure when performed by skilled surgeons
In the Padded Closet: Thoughts on a Secret Life
Full text linkThe author highlights their personal experience with several mental issues as a law student as UC Hastings. This piece explains one\u27s approach to the battling the societal and legal issues through their secret battle against mental illness
Power-Capacity and Ramp-Capability Reserves for Wind Integration in Power-Based UC
No full textThis paper proposes a power-based network-constrained unit commitment (UC) model as an alternative to the traditional deterministic UCs to deal with wind generation uncertainty. The formulation draws a clear distinction between power-capacity and ramp-capability reserves to deal with wind production uncertainty. These power and ramp requirements can be obtained from wind forecast information. The model is formulated as a power-based UC, which schedules power-trajectories instead of the traditional energy-blocks and takes into account the inherent startup and shutdown power trajectories of thermal units. These characteristics allow a correct representation of unit's ramp schedule which define their ramp availability for reserves. The proposed formulation significantly decreases operation costs compared to traditional deterministic and stochastic UC formulations while simultaneously lowering the computational burden. The operation cost comparison is made through 5-min economic dispatch simulation under hundreds of out-of-sample wind generation scenarios
Who Or What Is Werethekau ‘Great of Magic’? A Problematic Inscription (UC 16639)
No full textIn this paper, I investigate the identity of Werethekau through a previously unpublished limestone block at the Petrie Museum (UC 16639). It is not recorded when or where this block was found; the context, a central and identifying feature for the archaeological discipline, is lost (Johnson 1999: 107). The Petrie Museum records do not include the method or date of acquisition. I will focus here on the following questions: What does this object represent? Who is Werethekau? Is it an epithet for a goddess, or a name for a material object, or for a goddess frequently associated with the coronation of the king? The discussion also introduces the approach on which I rely for the identification of the object and its chronology. A further aim in this publication is to bring the object to the attention of a wider readership of scholars of Egyptian archaeology in an attempt to find the missing parts
In the Padded Closet: Thoughts on a Secret Life
No full textThe author highlights their personal experience with several mental issues as a law student as UC Hastings. This piece explains one\u27s approach to the battling the societal and legal issues through their secret battle against mental illness
The Author, the IRS and Prepublication Expenditures
Full text linkAuthors have customarily deducted expenditures incurred in preparing a book for publication. The IRS has taken the position that such expenditures should be capitalized and then amortized. In the recent case of Faura v. Commissioner, the Tax Court allowed authors to deduct prepublication expenditures rather than capitalize them. In 1976, section 280 was added to the Internal Revenue Code by the 1976 Tax Reform Act. This section appears to require authors to capitalize prepublication expenditures for books. The Tax Reform Act of 1976 also contained section 2119 which allows authors to deduct prepublication expenditures until regulations are promulgated concerning them. To date, there is no solid authority on whether an author should capitalize post-1976 prepublication expenditures
Impact on Reserves and Energy Delivery of Current UC-based Market-Clearing Formulations
Full text linkReserves are playing each time a more important role due to the massive penetration of renewable energy sources nowadays. Operating reserves must be used for unforeseen events. All predictable events must be directly considered in the scheduling stage otherwise there will be an inefficient and unnecessary use of reserves that increases system operation costs and can even endanger the power system security. This paper presents a qualitative assessment of some widely used implicit assumptions in Unit Commitment (UC)-based Market-Clearing (MC) formulations. We show evidence of the impact on reserves and system security due to considering the use of energy blocks in the MC. In addition to this, we present the consequences on the reserve deployment due to the underlying accepted assumptions in UC-based MC formulations. Finally, we give some recommendations which must be incorporated in UC-based MC formulations in order to schedule and use the operating reserves efficiently
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