bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recording duration of ambient vibration monitoring for system identification of tall telecommunication towers
Authors: Yahyai Mahmood , Amiri Mohammad Mahdi 
Published: October 2013

SUMMARYIt is necessary to have reliable field measurement records for estimation of dynamic characteristics. Increasing duration of the record is one of the common methods for reduction of such errors in the results. Dynamic characteristics of telecommunication towers in higher modes are important for designers, but these parameters could be obtained from ambient vibration monitoring during typhoons in which duration of vibration is not long enough for reducing measurement errors.This paper suggests a procedure for obtaining the duration of recording time for more reliable determination of structural characteristics of telecommunication towers. It is suggested to record the vibration of towers in the form of a set of long‐term and short‐term duration recordings for lower and higher modes, respectively. This procedure was verified with field measurement of Milad telecommunication tower. The results show that natural frequencies determined by this procedure are in good agreement with finite element model analysis. Copyright © 2013 John Wiley & Sons, Ltd.
Long‐Term Survival and Quality of Life After Open Abdominal Aortic Aneurysm Repair
Authors: Timmers Tim K. , van Herwaarden Joost A. , de Borst Gert‐Jan , Moll Frans L. , Leenen Luke P. H. 
Published: October 2013

AbstractBackgroundOpen repair of abdominal aortic aneurysm (AAA) generally involves postsurgery admission to the intensive care unit (ICU). Few studies have evaluated the impact of surgery for either ruptured or nonruptured AAA (with postoperative ICU treatment) on long‐term survival and quality of life. The primary aim of this study was to quantify long‐term survival and health‐related quality of life (HrQpL) of a cohort of patients undergoing open AAA repair after hospital discharge.MethodsConsecutive patients undergoing open elective or acute AAA reconstruction with postoperative admission to the ICU and discharged alive from the hospital during 2009 were identified. Primary outcome measures were 1‐year and long‐term mortality. The secondary outcome was the HrQoL using the EuroQol‐6D (EQ‐6D) questionnaire at the end of the follow‐up period.ResultsA total of 263 patients were treated and postoperatively discharged alive: 56 had a ruptured AAA (rAAA), 35 a symptomatic AAA, and 172 an asymptomatic AAA. The 1‐year mortality after open AAA repair was 8 %. Overall, 39 % of patients died within 10 postoperative years (mean 6.0 ± 2.8 years). Long‐term survival of patients with a ruptured or symptomatic aneurysm was similar to that of patients undergoing elective aneurysm repair. Long‐term HrQoL of the total study population was worse than that of an age‐matched general Dutch population on the EQ‐us (range 0–1, difference 0.12). This decrease in HrQoL was mainly seen in mobility, self‐care, usual activities, and cognition.ConclusionsTen years after open AAA repair, the overall survival rate was 59 %. Long‐term survival and HrQoL were similar for patients with a repaired ruptured or symptomatic aneurysm and those who underwent elective aneurysm repair. There were also no differences in patients with infrarenal versus juxtarenal/suprarenal aneurysms. Surviving patients had a lower HrQoL than the age‐matched general Dutch population, especially regarding mobility, self‐care, usual activities, and cognition.
Ultrasound‐Guided Methylene Blue Dye Injection for Parathyroid Localization in the Reoperative Neck
Authors: Candell Leah , Campbell Michael J. , Shen Wen T. , Gosnell Jessica E. , Clark Orlo H. , Duh Quan‐Yang 
Published: October 2013

AbstractBackgroundThe goal of this study was to review a single institution’s experience using intraoperative ultrasound‐guided (ioUSG) methylene blue dye injection for the localization and removal of enlarged parathyroid glands in patients with primary hyperparathyroidism and a history of previous neck surgery.MethodsWe performed a retrospective review of nine consecutive patients who underwent reoperative parathyroidectomy using ioUSG methylene blue dye injection.ResultsAll patients had successful resolution of their hyperparathyroidism, with at least a 50 % decrease in intraoperative parathyroid hormone level after resection. One patient had transient recurrent laryngeal nerve paresis. There were no permanent recurrent laryngeal nerve injuries or cases of permanent hypoparathyroidism.ConclusionsBlue dye injection is a safe and effective method of localizing diseased parathyroid glands in the reoperative neck.
Mandatory Resection of Strangulation Marks in Small Bowel Obstruction?
Authors: Käser Samuel Andreas , Willi Niels , Maurer Christoph Andreas 
Published: October 2013

AbstractBackground
No evidence is available on how to treat intraoperatively detected band‐shaped strangulation marks of the bowel wall originating from an adhesive band or hernia ring. The authors prefer to resect these hazardous strangulation marks to avoid secondary small bowel perforation. This retrospective study investigated the prevalence of intraoperatively unrecognized ulceration and transmural necrosis at the site of the strangulation marks.MethodsFrom July 2003 to July 2011, a total of 31 of 461 patients with acute bowel obstruction underwent small bowel resection due to strangulation marks, exclusively. Seven patients had two strangulation marks, resulting in 38 strangulation marks to be analyzed.ResultsFrom 38 examined strangulation marks, 14 (36.8 %) exhibited deep ulceration or transmural necrosis. Four (10.5 %) necrotic lesions had already been recognized intraoperatively, while 7 (18.4 %) unsuspicious strangulation marks showed deep ulceration and 3 (7.9 %) showed transmural necrosis exclusively at final histopathologic examination. The number of strangulation marks that needed to be resected for prevention of one missed deep ulceration and/or transmural necrosis of the small bowel was 3.4. The presence of deep ulceration or transmural necrosis is associated with an obvious decrease in bowel diameter caudad to the strangulation mark. No anastomotic leak occurred.ConclusionThe severity of small bowel damage at the site of band‐shaped strangulation marks may be underestimated by surgeons. The present series showed favorable results with a resection‐per‐principle policy for these strangulation marks. If an obvious decrease of bowel diameter aborally to the strangulation mark is present, resection or seromuscular invagination of the later is particularly recommended.
Influence of Preoperative Chemotherapy on CT Volumetric Liver Regeneration Following Right Hemihepatectomy
Authors: Dello Simon A.W.G. , Kele Petra G. Serbanescu , Porte Robert J. , van Dam Ronald M. , Klaase Joost M. , Verhoef Cees , van Gulik Thomas , Molenaar Quintus , Bosscha Koop , van der Jagt Eric J. , Dejong Cornelis H.C. , de Boer Marieke T. 
Published: October 2013

AbstractBackgroundAn increasing number of patients undergo major liver resection following preoperative chemotherapy. Liver regeneration may be impaired in these patients, predisposing them to postoperative liver dysfunction. The aim of the present study was to evaluate the effects of preoperative chemotherapy on liver regeneration after partial liver resection.MethodsPatients planned to receive right hepatectomy either with (group B) or without (group A) prior chemotherapy were identified retrospectively from a prospective multi‐institutional database created in the conduct of a national randomized controlled trial (RCT). Prior chemotherapy was neither an inclusion nor an exclusion criterion of the trial. Future remnant liver volume (FRLV) was calculated by measuring total functional liver volume and resection specimen on preoperative computed tomography (CT) scans. Remnant liver volume after 7 days (VRLV7days) was measured on scheduled postoperative CT scans. The early regeneration index 7 days after surgery (RIearly) was calculated as [(VRLV7days − FRLV) / FRLV] × 100 %. Data are expressed as median (interquartile range).ResultsA total of 72 patients were enrolled: 45 in group A and 27 in group B. For the whole group, the liver remnant showed a 58 % (39 %) increase in volume at day 7 (1) day. The RIearly was not significantly different between groups A and B, 60 % (36 %) and 50 % (43 %), respectively (p = 0.47). The RIearly was significantly lower in patients who had undergone more than six cycles of chemotherapy.ConclusionsPreoperative chemotherapy does not seem to have a negative impact on early liver regeneration after partial liver resection.
The Past and Present of Liver Suture
Authors: Komorowski Andrzej L. , Lukashenko Andriy , Chang Yu‐Chung 
Published: October 2013

AbstractSince the first attempts at resecting parts of diseased livers in the late nineteenth century, hemorrhage has been the main obstacle for surgeons. One of the first hemostasis techniques in liver resection was liver suture. The idea of suturing the liver in order to perform resection was proposed by a team of Russian and Polish surgeons from Kharkiv University in today’s Ukraine. The liver suture became widely popular and has been used in various forms throughout the surgical world. Further into the twentieth century, it has lost much of its popularity; however, over more than 100 years of existence it has seen several peaks in interest. Currently, it is still being used by some liver surgeons as it is one of the cheapest ways of obtaining a bloodless liver parenchyma transection.
Stroke Volume Response to Liver Graft Reperfusion Stress in Cirrhotic Patients
Authors: Escobar Bibiana , Taurá Pilar , Martínez‐Palli Graciela , Fondevila Constatino , Balust Jaume , Beltrán Joan , Fernández Javier , García‐Pagán Juan Carlos , García‐Valdecasas Juan Carlos 
Published: October 2013

AbstractIntroductionIn patients with advanced cirrhosis, stressful stimuli may reveal a silent reduced cardiac performance. During liver transplantation (LT), graft reperfusion strongly stresses the heart and may unmask latent myocardial dysfunction.AimThe objective of this study was to assess heart response to acutely increased preload after liver graft reperfusion and correlate this response with preoperative data and outcome.MethodsPreoperative clinical, echocardiographic, and hemodynamic data, and patient outcome were retrospectively recorded for 235 liver recipients who had no known cardiac disease. Myocardial dysfunction was defined as less than 10 % increase of stroke volume after graft reperfusion (non‐responder).ResultsWe found 84 (35.7 %) non‐responder patients. The non‐responders showed higher Model for end‐stage liver disease scores (p = 0.046), left atrial diameter (LAD) (p = 0.040), hepatic vein pressure gradient (p = 0.055), and hyperdynamic state than responders. The percentages of patients with hyponatremia (p = 0.048) and alcohol etiology (p = 0.025) were also higher among non‐responders. Independent predictors of inadequate cardiac response in the multivariate analysis were low preoperative systemic vascular resistance (SVRI) [odds ratio (OR) 3.09, 95 % CI 1.15–4.82; p = 0.027] and enlargement of LAD (OR 2.08, 95 % CI 1.49–2.74; p = 0.044). Non‐response was associated with higher rates of early cardiovascular events [hazard ratio (HR) 2.84, 95 % CI 1.09–4.22; p = 0.039] and higher length of intensive care unit stay (p = 0.038). No differences were found in 1‐year survival rates.ConclusionsLatent cardiac dysfunction among LT recipients, considered to be abnormal stroke volume response to unclamping of portal vein, is very prevalent. SVRI and LAD were independent predictors of inadequate responses. This condition deserves special attention since it may aggravate the early postoperative course of LT.
Prognostic Impact of Microscopic Tumor Involved Resection Margin in Advanced Gastric Cancer Patients after Gastric Resection
Authors: Woo Jung‐Woo , Ryu Keun Won , Park Ji Yeon , Eom Bang Wool , Kim Mi Jung , Yoon Hong Man , Park Sook Ryun , Kook Myeong‐Cherl , Choi Il Ju , Kim Young‐Woo , Park Young‐Iee 
Published: October 2013

AbstractBackgroundThe prognosis of patients with positive surgical resection margins is dismal in gastric cancer. However, the influence of positive margin itself on prognosis is still uncertain, especially in advanced gastric cancer (AGC). The aims of the present study were to evaluate the prognostic impact of microscopic tumor involved resection margins in stage III–IV AGC after gastric resection in comparison with other well‐known factors.MethodsAmong 1,536 consecutive gastric cancer patients who received intentional curative resection for stage III–IV AGC between April 2001 and December 2011 at the National Cancer Center, 35 patients (2.28 %) had positive resection margins on their final histology. A comparison of clinicopathologic characteristics, recurrence pattern, overall survival (OS), and disease‐free survival (DFS) was made between positive margin (PM) patients and negative margin (NM) patients.ResultsAmong the 35 PM patients, 15 (42.9 %) had proximal involved margins, 21 (60.0 %) had distal involved margins, and one (2.9 %) had both involved margins. Twenty‐eight PM patients (80.0 %) were stage III, and 7 (20.0 %) were stage IV. Recurrence was significantly higher in PM than NM (63.6 % vs. 39.7 %, respectively; p = 0.005). The OS and DFS rates were significantly lower in the PM group than in the NM group (14.9 vs. 36.3 months, p < 0.001 and 11.6 vs. 27.1 months, p = 0.005, respectively). The presence of PM was an independent risk factor for both OS and DFS.ConclusionsThe presence of PM is an independent risk factor for OS and DFS. Considering the prognostic impact of PM, a sufficient resection margin should be ensured when determining the resection line in gastrectomy with curative intent. The reoperation to secure clear resection margins should be considered as a treatment of choice in the case of PM.
Injury Patterns in Recreational Alpine Skiing and Snowboarding at a Mountainside Clinic
Authors: Coury Tim , Napoli Anthony M. , Wilson Matthew , Daniels Jeff , Murray Ryan , Milzman Dave 
Published: October 2013

Objective The purpose of this study was to examine the demographic and injury characteristics of skiing and snowboarding at a mountainside clinic. Methods Prospectively collected data of all acutely injured patients at the Big Sky Medical Clinic at the base of Big Sky Ski Area in the Northern Rocky Mountains were reviewed. A total of 1593 patients filled out the study questionnaire during the 1995–2000 and 2009–2010 ski seasons. Injury patterns by sport, demographics, and skill level were analyzed and compared over time. Results The mean overall age was 32.9 ± 14.9 years, 35.4 ± 15.2 for skiers and 23.6 ± 9.5 for snowboarders ( P < .01). The knee accounted for 43% of all skiing injuries, the shoulder 12%, and the thumb 8%. The wrist accounted for 18% of all snowboarding injuries, the shoulders 14%, and the ankle and knee each 13%. Beginner snowboarders were more likely to present with wrist injuries compared with intermediate ( P = .04) and advanced snowboarders ( P < .01). Demographic and injury patterns did not significantly change over time. Conclusions At this mountainside clinic, the most frequent ski injuries are to the knee and shoulder, regardless of skill level. Beginning snowboarders most frequently injure their wrists whereas shoulder injuries remain frequent at all skill levels. Knowledge of these injury patterns may help manage patients who present for medical care in the prehospital setting as well as help in designing targeted educational tools for injury prevention.
Thin power-law film flow down an inclined plane: consistent shallow-water models and stability under large-scale perturbations
Authors: Noble Pascal , Vila Jean-Paul 
Published: October 2013

AbstractIn this paper we derive consistent shallow-water equations for the flow of thin films of power-law fluids down an incline. These models account for the streamwise diffusion of momentum, which is important to describe accurately the full dynamics of thin-film flows when instabilities such as roll waves arise. These models are validated through a comparison with the Orr–Sommerfeld equations for large-scale perturbations. We consider only laminar flow for which the boundary layer issued from the interaction of the flow with the bottom surface has an influence all over the transverse direction to the flow. In this case the concept itself of a thin film and its relation with long-wave asymptotics leads naturally to flow conditions around a uniform free-surface Poiseuille flow. The apparent viscosity diverges at the free surface, which, in turn, introduces a singularity in the formulation of the Orr–Sommerfeld equations and in the derivation of shallow-water models. We remove this singularity by introducing a weaker formulation of the Cauchy momentum equations. No regularization procedure is needed, nor any distinction between shear thinning and thickening cases. Our analysis, though, is only valid when the flow behaviour index $n$ is larger than $1/ 2$, and strongly suggests that the Cauchy momentum equations are ill-posed if $n\leq 1/ 2$.
Modeling Global Wine Markets to 2018: Exchange Rates, Taste Changes, and China's Import Growth
Authors: Anderson Kym , Wittwer Glyn 
Published: October 2013

AbstractIn this paper, we use a revised, expanded, and updated version of a global model first developed by Wittwer et al. (2003) to project the wine markets of its 44 countries plus seven residual country groups to 2018. Because real exchange rate (RER) changes have played a key role in the fortunes of wine market participants in some countries in recent years, we use the model to analyze their impact, first retrospectively during 2007–11 and then prospectively during the period to 2018 under two alternative sets of RERs: no change, and a halfway return to 2009 rates. In both scenarios, we assume a return to the gradual trend toward premium wines and away from nonpremium wines. The other major development expected to affect the world's wine trade is growth in China's import demand. Alternative simulations provide a range of possibilities, but even the low-growth scenario suggests that China's place in global wine markets is likely to become increasingly prominent. (JEL Classifications: C53, F11, F17, Q13).
Diversification in Private Equity Funds: On Knowledge Sharing, Risk Aversion, and Limited Attention
Authors: Humphery-Jenner Mark 
Published: October 2013

AbstractThis paper examines diversification as a source of value creation and destruction in private equity (PE) funds. Previous literature has focused on the “diversification discount” in corporations. However, in PE funds, diversification might increase returns by ameliorating managerial risk aversion and facilitating knowledge sharing. I examine a sample of 1,505 PE funds and show that industry and geographic diversification can increasePE fund returns. This is likely due to knowledge sharing and learning, not merely risk reduction. Diversification can reduce returns if it spreads staff too thinly across industries or is motivated by risk aversion rather than performance bonuses.
Age-Friendly Rural Communities: Conceptualizing ‘Best-Fit’
Authors: Keating Norah , Eales Jacquie , Phillips Judith E. 
Published: October 2013

RÉSUMÉLa littérature sur les communautés amies des aînés est axé principalement sur un modèle de vieillissement en un milieu urbain, en omettant ainsi de refléter la diversité des communautés rurales. Dans cet article, nous abordons cette lacune en se concentrant sur la notion de la communauté dans un contexte rural et en demandant ce qui crée une bonne adaptation entre les personnes âgées et leur environnement. Cela se fait grace à (1) comptes autobiographiques et biographiqus de deux environnements géographiques très différents de subsistence: les communautés bucoliques et contournées, et à (b) l’analyse des besoins et des ressources différents des deux groupes de personnes: les personnes âgées marginalisées et actives qui vivent dans ces deux communautés rurales différentes. Nous affirmons que la définition originale de 2007 de l’Organisation mondiale de la Santé (OMS), de “amie des aînés” doit être repensée pour tenir compte des besoins et ressources explicitement différents de la communauté, pour être plus inclusive ainsi que plus interactive et dynamique en intégrant les changements qui sont survenus au fil du temps chez les personnes et les lieux.
Dynamics of Schmallenberg virus infection within a cattle herd in Germany, 2011
Authors: WERNIKE K. , SILAGHI C. , NIEDER M. , PFEFFER M. , BEER M. 
Published: October 2013

SUMMARYIn late 2011, the insect-transmitted Schmallenberg virus (SBV) emerged in Europe. In this study, a cattle farm located in the core region of the epidemic was closely monitored between May 2011 and January 2012. Up to the end of September every tested serum sample was negative by an SBV-specific antibody ELISA, suggesting the absence of an infection before autumn 2011. Around the end of September/beginning of October SBV genome was detected in blood samples of some animals, and a few cows exhibited fever during that period. Starting at the end of September the first cows seroconverted; the within-herd prevalence reached 100% within barely 1 month. Consequently, SBV spread rapidly in the tested herd during the vector season of 2011.
Yersinia enterocoliticainfections associated with improperly pasteurized milk products: southwest Pennsylvania, March–August, 2011
Authors: LONGENBERGER A. H. , GRONOSTAJ M. P. , YEE G. Y. , JOHNSON L. M. , LANDO J. F. , VOORHEES R. E. , WALLER K. , WELTMAN A. C. , MOLL M. , LYSS S. B. , CADWELL B. L. , GLADNEY L. M. , OSTROFF S. M. 
Published: October 2013

SUMMARYIn July 2011, a cluster ofYersinia enterocoliticainfections was detected in southwestern Pennsylvania, USA. We investigated the outbreak's source and scope in order to prevent further transmission. Twenty-two persons were diagnosed with yersiniosis; 16 of whom reported consuming pasteurized dairy products from dairy A. Pasteurized milk and food samples were collected from this dairy.Y. enterocoliticawas isolated from two products. Isolates from both food samples and available clinical isolates from nine dairy A consumers were indistinguishable by pulsed-field gel electrophoresis. Environmental and microbiological investigations were performed at dairy A and pasteurization deficiencies were noted. Because consumption of pasteurized milk is common and outbreaks have the potential to become large, public health interventions such as consumer advisories or closure of the dairy must be implemented quickly to prevent additional cases if epidemiological or laboratory evidence implicates pasteurized milk as the outbreak source.