1,028 research outputs found
Carpal scaphoid fracture in the skeletally immature: a single centre one-year prospective study.
No full textWe report up-to-date one-year prospective data on the incidence of scaphoid fracture in skeletally immature patients managed in a Fracture Clinic of a Level I Trauma Centre in a University Hospital in the UK. All scaphoid fractures were immobilised until union was achieved. One hundred twenty one skeletally immature patients were referred for a suspected fracture of the scaphoid. Fourteen patients (11.5%) did have a scaphoid fracture, an incidence of 15 per 100,000 (0.55% of all paediatric injuries referred). Mean delay in being seen was 2.6 days, and mean follow-up time was 52.3 days. Only plain radiography was used to diagnose and follow up scaphoid fractures. Fractures of the scaphoid in skeletally immature individuals are uncommon, are usually undisplaced, occur more commonly in the distal portion of the bone, and carry a good prognosis
Direct numerical simulation of turbulent Couette-Poiseuille flow with zero skin friction
No full textThe near-wall scaling of mean velocity U(y) is addressed for the case of zero skin friction on one wall of a fully turbulent channel flow. The present DNS results can be added to the evidence in support of the conjecture that U is proportional to √yw in the region just above the wall at which the mean shear dU/dy = 0
Structure of the DMF5 YW double mutant in complex with ELA/HLA-A2.
No full text<p>(a) Superposition of the YW/ELA/HLA-A2 and the DMF5/ELA/HLA-A2 complexes. DMF5 α chain is yellow, β chain is tan, peptide is magenta (shown as sticks), MHC is green, and β2m is cyan; residues that were mutated are shown as sticks. Close-ups of (b) wild-type αD26, (c) mutant αY26, (d) wild-type βL98, (e) mutant βW98 are shown. In (b–e), residues proximal to the mutation sites are shown as sticks, and in (c) hydrogen bonds involving the αY26 side chain and a bound water molecule are shown as dashed lines.</p
Combination Of Cfd And Csd Packages For Fluid-Structure Interaction
No full textIn this article the UDF script file in the Fluent software was rewritten as the "connecting file" for the Fluent and the ANSYS/ABAQUS in order that the joined file can be used to do aero-elastic computations. In this way the fluid field is computed by solving the Navier-Stokes equations and the structure movement is integrated by the dynamics directly. An analysis of the computed results shows that this coupled method designed for simulating aero-elastic systems is workable and can be used for the other fluid-structure interaction problems
Comparative analysis between a proxy-based climate reconstruction and GCM-based simulation of temperatures over the last millennium in China
No full textNational Natural Science Foundation of China [90502009]; Chinese Academy of Sciences [KZCX2-YW-316, KZCX2-YW-315]; National Basic Research Program of China [2006CB400503, 2004CB720208
Changes in Soil Properties Under the Influences of Cropping and Drip Irrigation During the Reclamation of Severe Salt-Affected Soils
No full textChinese Academy of Sciences [KZCX2-XB2-13, KSCX2-YW-N-080
The antiemetic prophylaxis of dexamethasone improved the anesthetic efficacy of sevoflurane in spontaneously breathing patients undergoing outpatient anorectal surgery
No full textABSTRACT
Purpose: Dexamethasone provides potent analgesic and antiemetic effects. Sevoflurane are associated with an increased incidence of postoperative nausea and vomiting (PONV) and delayed patient discharge compared to propofol. This study was designed to evaluate whether the prophylatic use of dexamethasone with sevoflurane could minimize the incidence of PONV and facilitate early recovery after outpatient anorectal surgery.
Methods: Forty outpatients undergoing anorectal surgery were randomly assigned to receive either dexamethasone (5 mg IV; n=20) or an equal volume of saline (n=20) before the induction of anesthesia. Anesthesia was induced with sevoflurane 8% and N2O 67% in oxygen (at 6 L/min) followed by placement of laryngeal mask. Anesthesia was maintained with sevoflurane 2-4% end-tidal in combination with N2O 50% in oxygen 3 L/min. All patients were allowed to breathe spontaneously during the operation. The postoperative nausea and vomiting (PONV), VAS pain score and patient satisfaction were recorded.
Results: The incidence of PONV and VAS pain score were significant lower in dexamethasone-treated patients compared with saline-treated ones. The time required for discharge was significantly shorter in dexamethasone-treated patients. Above all, the dexamethasone-treated patients expressed higher satisfaction index. There was no significant difference in recovery time for eye opening, response to commands, orientation, and ambulatory.
Conclusions: The prophylactic administration of dexamethasone reduces the incidence of PONV andVAS pain score, promotes recovery to home readiness, and improves the satisfaction after the anesthesia with spontaneously breathing of sevoflurane through laryngeal mask in outpatients undergoing anorectal surgery
Finite-Sample Bias Propagation in Autoregressive Estimation With the Yule–Walker Method
No full textThe Yule-Walker (YW) method for autoregressive (AR) estimation uses lagged-product (LP) autocorrelation estimates to compute an AR parametric spectral model. The LP estimates only have a small triangular bias in the estimated autocorrelation function and are asymptotically unbiased. However, using them in finite samples with the YW method for AR estimation can give a strong distortion in the weak parts of the power spectral density. The distortion is shown to be influential in an example without strong spectral peaks. The true biased AR model, which is computed by applying the triangular bias to the true autocorrelation function, has an infinite order. A new objective measure is introduced to determine the smallest sample size for which the unbiased asymptotic theory can be considered as a fair approximation.Multi-Scale PhysicsApplied Science
Propeller jet flow scour around different quay wall configurations
No full textLimanlara yanaşan/ayrılan gemilerin pervanelerinden çıkan jet akımları yapı etrafında meydana getirdikleri taban oyulma mekanizması ile yapı stabilitelerinin bozulmasına önemli ölçüde katkı sağlar. Günümüzde değişen gemi tipleri, kapasiteleri, büyüklüklerinde meydana gelen bu oyulmanın mertebesini etkilemektedir. Bu çalışmada, tekil ve çift pervane olmak üzere farklı gemi çeşitlerini temsil etmek üzere değişen pervane tipleri kullanılarak pervane jet akımı etkisinde meydana gelen yapı etrafında oyulma durumu deneysel olarak araştırılmıştır. Kapalı tip yanaşma yapısı etrafında meydana gelen oyulmanın araştırıldığı bu çalışmada oyulma üzerinde etkili önemli birçok parametre dikkate alınmıştır. Bu nedenle deneylerde 10 cm çapında tekil ve çift olmak üzere iki farklı tip pervane ve kapalı tip yanaşma yapısının farklı konumları için pervaneye olan uzaklıkları (Xw, Yw), pervane dönüş hızları (n), pervanenin tabandan yüksekliği (açıklık:G) gibi parametreler değiştirilerek oyulma mekanizması üzerindeki etkileri detaylı şekilde incelenmiştir. Değişen bu koşullar altında oyulma profilleri belirlenmiştir.Berth structures stability may effected by erosion due to berthing/unberthing maneuvering ship's propeller flow. In recent years, changing ship size, type and capacity related to amount of seabed scouring. In this study, laboratory experiments were carried out to investigate changing scouring profiles around berth structure as quay wall due to single and twin propellers jets that corresponds different types of ships. The experiments were carried out by considering effective parameters on scouring process. For this purpose, two different type of single and twin propeller with 10 cm diameters, propeller rotation speed (n), gap of the propeller (G) and changing (perpendicular and parallel) quay wall positions with different distances from propeller (plane or rotation axis) to the perpendicular and parallel quay walls (Xw and Yw) were used to detailed investigation on scour mechanism. The scour profiles were obtained experimentally under determined conditions for changing parameteres that are effective on the process
XML approach to communication design of WebGIS
No full textXML can describe the concept model of inclusion relationship conveniently. Also, it can directly express the concept model in an understandable way, and the expression format is so flexible that no useless element will be included there. While describing communication protocols by XML, we can not only give a common format for data and control commands, but also reuse the existing XML-parsers, so as to facilitate the expansibility and integration of protocols in a system, W3C had proposed Simple Object Access Protocol (SOAP) [1], which is a light weight protocol based on XML used to build information exchange framework under distributed environments. ArcInfo's ArcIMS also used ArcXML as the fundamental command and data transmission protocols to communicate between users' web pages and backend spatial data servers [2]. Our idea of XML based communication protocols for WebGIS benefits from the SOAP model, but we basically focus on the application in WebGIS. With the aid of UML, the typical requiring and responding protocols of WebGIS are analyzed firstly. Then the mechanism of designing communication protocols following W3C's XML Schema specification is illustrated.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000231171300077&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Computer Science, Information SystemsComputer Science, Theory & MethodsSCI(E)CPCI-S(ISTP)
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