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Usefulness of serum c-reactive protein and calprotectin for the early detection of colorectal anastomotic leakage:A prospective observational study

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World Journal of Gastroenterology 2022年第24期28卷 2758-2774页

作者： Nuno J G Rama Marlene c c Lages Maria Pedro S Guarino Óscar Lourenço Patrícia c Motta Lima Diana Parente cândida S G Silva Ricardo castro Ana Bento Anabela Rocha Fernando castro-Pocas João Pimente colorectal Surgical Division Leiria Hospital CentreLeiria 2410-021Portugal Abel Salazar Biomedical Institute(IcBAS) University of OportoOporto 4099-002Portugal center for Innovative care and Health Technology(ciTechcare) Polytechnic of LeiriaLeiria 2410-541Portugal Faculty of Economics CeBERUniversity of CoimbraCoimbra 3000-137Portugal clinical Pathology Division Leiria Hospital CentreLeiria 2410-541Portugal Surgical Division Oporto Hospital CentreOporto 4099-001Portugal Department of Gastroenterology Santo António HospitalPorto Hospital CenterPorto 4099-001Portugal Institute of Biomedical Sciences Abel Salazar University of PortoPorto 4099-001Portugal Faculty of Medicine University of CoimbraCoimbra 3004-531Portugal Surgical Division Montes Claros HospitalCoimbra 3030-320Portugal

BAcKGROUND colorectal anastomotic leakage(cAL)is one of the most dreaded complications after colorectal surgery,with an incidence that can be as high as 27%.This event is associated with increased morbidity and mortality;therefore,its early diagnosis is crucial to reduce clinical consequences and *** biomarkers have been suggested as laboratory tools for the diagnosis of *** To assess the usefulness of plasma c-reactive protein(cRP)and calprotectin(cLP)as early predictors of *** A prospective monocentric observational study was conducted including patients who underwent colorectal resection with anastomosis,from March 2017 to August *** were divided into three groups:G1–no complications;G2–complications not related to cAL;and G3–*** biomarkers were measured and analyzed in the first 5 postoperative days(PODs),namely white blood cell(WBc)count,eosinophil cell count(Ecc),cRP,cLP,and procalcitonin(PcT).clinical criteria,such as abdominal pain and clinical condition,were also *** correlation between biomarkers and cAL was *** operating characteristic(ROc)curve analysis was used to compare the accuracy of these biomarkers as predictors of cAL,and the area under the ROc curve(AUROc),specificity,sensitivity,positive predictive value,and negative predictive value(NPV)during this period were *** In total,25 of 396 patients developed cAL(6.3%),and the mean time for this diagnosis was 9.0±6.8 *** operative characteristics,such as surgical approach,blood loss,intraoperative complications,and duration of the procedure,were notably related to the development of *** length of hospital stay was markedly higher in the group that developed cAL compared with the group with complications other than cAL and the group with no complications(median of 21 d vs 13 d and 7 d respectively;Pctive performance was on POD4 and POD5,with the largest AUROc of 0.84 on ***

关键词： Anastomotic leakage colorectal Surgery Biomarkers c-reactive protein calprotectin

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Ophthalmologic complications of antiviral therapy in hepatitis c treatment

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World Journal of Gastroenterology 2013年第45期19卷 8227-8237页

作者： Roderick O'Day Mark c Gillies Golo Ahlenstiel Department of Gastroenterology and Hepatology Westmead Hospital Westmead NSW 2145Australia clinical Ophthalmology and Eye Health The University of Sydney Sydney NSW 2000Australia Storr Liver Unit Westmead Millennium Institute The University of Sydney Sydney NSW 2145 Australia

Antiviral therapy consisting of interferon-alpha and ribavirin for chronic hepatitis c infection is associated with multi-system *** complications are common and can be classified into two groups:interferon-associated retinopathy and atypical adverse ***-associated retinopathy has been investigated by multiple observational studies that have found widely divergent *** clinical importance of this complication is,consequently,*** review examines the literature with the specific goal of identifying the most important ophthalmologic issues facing the hepatologist prescribing antiviral ***,it assesses the incidence of interferon-associated retinopathy,as well as its risk factors,pathogenesis,clinical manifestations and options for management using data from the observational *** likely benefit of a screening program,especially one targeting patients with the highest risk of developing interferon-associated retinopathy,is *** ophthalmologic adverse events occur less frequently than interferon-associated retinopathy during antiviral therapy for chronic hepatitis c *** often,however,lead to irreversible vision *** examine the reports of these adverse events-in individual case reports or case series and in the observational studies investigating interferon-associated retinopathy-to describe the spectrum of these adverse events,the likely outcome for patients and to highlight the most important areas of future clinical research.

关键词： Interferon Hepatitis c Ocular complications Retinopathy

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Genotypic diversity of a dominant c_(4) grass across a long-term fire frequency gradient

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Journal of Plant Ecology 2013年第6期6卷 448-458页

作者： cynthia c.chang Melinda D.Smith Department of Ecology and Evolutionary Biology Yale UniversityNew HavenCT 06511USA Department of Biology University of WashingtonSeattleWA 98195USA Department of Biology Colorado State UniversityFort CollinsCO 80523USA

Aims and Methods Diversity-disturbance research has focused on community diversity,but disturbance frequency could impact diversity within species as well,with important consequences for community diversity and ecosystem *** examined patterns of genetic diversity of a dominant grass species,Andropogon gerardii,in native North American tallgrass prairie sites located in eastern Kansas that have been subjected to a gradient of fire frequency treatments(burned every 1,2,4 or 20 years)since the *** addition,we were able to assess the relationships between genetic diversity of ***,species diversity and productivity across this range of fire *** Findings We found no significant relationships between genetic diversity of *** at the local scale(1 m^(2) plot level)and disturbance frequency(burned 2 to 32 times over a 38-year period).However,at the site level(*** all plots sampled within a site,~100 m^(2))there were differences in genotype richness and composition,as well as genomic dissimilarity among individuals of *** richness was greatest for the site burned at an intermediate(4-year)frequency and lowest for the infrequently(20-year)burned *** addition,genotypes found in the frequently burned sites were more similar from each other than expected by random chance than those found in the infrequently burned *** composition of *** was not significantly different between the frequently burned sites(annual vs.2 year)but did differ between frequently burned and infrequently burned sites(1 and 2 year vs.4 and 20 year,etc.).Together,these results suggest site-level ecological sorting of genotypes in intact prairie across a broad gradient of disturbance frequencies,likely driven by alterations in environmental *** fire promotes the abundance of dominant grass species,reduces plant community diversity and impacts ecosystem processes such as *** study suggests that

关键词： Andropogon gerardii disturbance frequency genetic relatedness genetic-species diversity relationship genotype richness intermediate disturbance hypothesis productivity tallgrass prairie

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Detection of Breaking Waves Using X-Band Pulse Radar in the Nearshore Region

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china Ocean Engineering 2013年第4期27卷 549-556页

作者： Y.c.Lin c.c.chang M.c.Lee H.c.chan J.M.Leu Department of Hydraulic and Ocean Engineering National Cheng-Kung University Department of Soil and Water conservation National Chung Hsing University Department of Hospitality Management Taiwan Shoufu University

An X-band pulsed Doppler microwave radar has been used to determine the characteristics of breaking waves. Field experiments were conducted at the Shuang-Si estuary in the north of Taiwan in the winter of 2005. Analyses on maxima radar cross section and Doppler frequency shift are done to characterize wave breaking zones. Based on observations of breaking waves, the wave breaking zones are shown to be located at water depths of 1.8 to 2.2 m in the experimental site. In general, the results indicate that a radar system has the potential to delineate the spatial variation of breaking waves clearly and that this is sufficient to achieve a measurement operation for near-shore air-sea interaction events.

关键词： radar Doppler effect wave breaking coastal zone

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Oxidation Protective c/Sic/Si-Sic Multilayer coating for carbon/carbon composites Applying at 1873 K

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Journal of Materials Science & Technology 2010年第12期26卷 1139-1142页

作者： Yulei Zhang,Hejun Li,Xinfa Qiang and Kezhi Li c/c composites Research center,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi an 710072,china [a] c/c composites Research center State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi(an 710072 china

A c/Sic/Si-Sic multilayer coating for protecting carbon/carbon （c/c） composites against oxidation was prepared by slurry and pack cementation. X-ray diffraction （XRD） and energy dispersive spectroscopy （EDS） analysis showed that the inner coating obtained from the slurry and pack cementation was a c/Sic gradient layer acting as bonding layer, and the exterior coating formed in the second pack cementation was a Si-Sic double phase coating. Oxidation tests at 1873 K in air showed that the coating exhibited excellent oxidation protective ability and thermal shock resistance. The coating could effectively protect c/c composites from oxidation at 1873 K in air for 170 h and undergo the thermal cycling between 1873 K and room temperature for 8 cycles. The weight loss of the coated c/c composites is due to the formation of cracks and holes in the coating and the volatilization of SiO2 glass at high temperature.

关键词： carbon/carbon composites Oxidation coating

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New method for rekindling the explosive waves in Maxwellian space plasmas

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Plasma Science and Technology 2020年第12期22卷 48-58页

作者： G c DAS Kalikadas Road Byelane HazraparaCoochbehar-736101West BengalIndia

Our interest is to study the nonlinear wave phenomena in complex plasma constituents with Maxwellian electrons and ions. The main aim is to use a new method known as the(G′/G)method to exhibit the effects of dust charge fluctuations on the evolution of nonlinear waves. The coherent features of the shock and solitary waves along with the generation of high-energy waves have been amplified through the solution of the Korteweg–de Vries–Burgers equation,and the different natures of the waves were found successfully. Results are discussed graphically with the thoughtful choice of typical plasma parameters from different space plasma environments, exactly those found in cosmic dusty plasmas laden in ionospheric auroral region,radial spokes of Saturn's rings, planetary nebulae and solar F-corona region. All conclusions are in good accordance with the actual occurrences and could be of interest to further investigations of space. Moreover, the applicability of the present method is hoped to be a great enhancement by its use as ingenious mechanism used to evaluate the soliton dynamics and Burgers shock waves.

关键词： Maxwellian complex plasma nonlinear waves soliton and shock propagation (G′/G)method space plasmas

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Pushover analysis of reinforced concrete frames considering shear failure at beam-column joints

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Earthquake Engineering and Engineering Vibration 2013年第3期12卷 373-383页

作者： Y.c.Sung T.K.Lin c.c.Hsiao M.c.Lai Bridge Division Center for Research on Earthquake EngineeringTaipei University of Technology (NTUT) chiao Tung University Taipei University of Technology (NTUT)

Since most current seismic capacity evaluations of reinforced concrete （Rc） frame structures are implemented by either static pushover analysis （PA） or dynamic time history analysis, with diverse settings of the plastic hinges （PHs） on such main structural components as columns, beams and walls, the complex behavior of shear failure at beam-column joints （BcJs） during major earthquakes is commonly neglected. This study proposes new nonlinear PA procedures that consider shear failure at BcJs and seek to assess the actual damage to Rc structures. Based on the specifications of FEMA-356, a simplified joint model composed of two nonlinear cross struts placed diagonally over the location of the plastic hinge is established, allowing a sophisticated PA to be performed. To verify the validity of this method, the analytical results for the capacity curves and the failure mechanism derived from three different full-size Rc frames are compared with the experimental measurements. By considering shear failure at BcJs, the proposed nonlinear analytical procedures can be used to estimate the structural behavior of Rc frames, including seismic capacity and the progressive failure sequence of joints, in a precise and effective manner.

关键词： Rc frame beam-column joint pushover analysis capacity curve plastic hinge performance-based seismic evaluation

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Roles of soil-structure interaction and damping in base-isolated structures built on numerous soil layers overlying a half-space

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Earthquake Engineering and Engineering Vibration 2016年第2期15卷 387-400页

作者： c.S.Tsai c.I.Hsueh H.c.Su Department of civil Engineering Feng Chia University Graduate Institute of civil & Hydraulic Engineering Feng Chia University Department of Water Resources Engineering and conservation Feng Chia University

This study examines the roles of soil-structure interaction （SSI）, higher modes, and damping in a base-isolated structure built on multiple layers of soil overlying a half space. closed-form solutions for the entire system, including a superstructure, seismic isolator, and numerous soil layers overlying a half-space, were obtained. The formulations obtained in this study simply in terms of well-known frequencies and mechanical impedance ratios can explicitly interpret the dynamic behavior of a base-isolated structure interacting with multiple soil layers overlying a half-space. The key factors influencing the performance of the isolation system are the damping ratio of the isolator and the ratio of the natural frequency of the fixed-base structure to that of the isolated structure by assuming that the superstructure moves as a rigid body. This study reveals that higher damping in the base isolator is unfavorable to higher mode responses that usually dominate the responses of the superstructure and that the damping mechanism plays an important role in transmitting energy in addition to absorbing energy. It is also concluded that it is possible to design a soft soil layer as an isolation system for isolating vibration energy.

关键词： base isolation seismic isolation soil-structure interaction closed- form solution higher-mode effects soilstratum passive control damping effects

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Equivalent series system to model a multiple friction pendulum system with numerous sliding interfaces for seismic analyses

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Earthquake Engineering and Engineering Vibration 2014年第1期13卷 85-99页

作者： c.S.Tsai H.c.Su T.c.chiang Department of civil Engineering Feng Chia University Department of Water Resources Engineering and conservation Feng Chia University Earthquake Proof Systems Inc.

current structural analysis software programs offer few if any applicable device-specifi c hysteresis rules or nonlinear elements to simulate the precise mechanical behavior of a multiple friction pendulum system(MFPS) with numerous sliding *** on the concept of subsystems,an equivalent series system that adopts existing nonlinear elements with parameters systematically calculated and mathematically proven through rigorous derivations is *** aim is to simulate the characteristics of sliding motions for an MFPS isolation system with numerous concave sliding interfaces without prior knowledge of detailed information on the mobilized forces at various sliding *** MFPS with numerous concave sliding interfaces and one articulated or rigid slider located between these interfaces is divided into two subsystems: the fi rst represents the concave sliding interfaces above the slider,and the second represents those below the *** equivalent series system for the entire system is then obtained by connecting those for each subsystem in *** equivalent series system is validated by comparing numerical results for an MFPS with four sliding interfaces obtained from the proposed method with those from a previous study by Fenz and ***,these numerical results demonstrate that an MFPS isolator with numerous concave sliding interfaces,which may have any number of sliding interfaces,is a good isolation device to protect structures from earthquake damage through appropriate designs with controllable mechanisms.

关键词： seismic isolation base isolation earthquake engineering multiple friction pendulum system structural control mathematical modeling equivalent series system

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Nonlinear dynamic analysis of multi-base seismically isolated structures with uplift potentialⅡ:verification examples

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Earthquake Engineering and Engineering Vibration 2010年第1期9卷 83-91页

作者： Panayiotis c.Roussis Panos c.Tsopelas Michael c.constantinou Department of civil and Environmental Engineering University of Cyprus Department of civil Engineering University of Thessaly Department of civil Structural and Environmental EngineeringUniversity at BuffaloState University of New York

The work presented in this paper serves as numerical verification of the analytical model developed in the companion paper for nonlinear dynamic analysis of multi-base seismically isolated structures. To this end, two numerical examples have been analyzed using the computational algorithm incorporated into program 3D-BASIS-ME-MB, developed on the basis of the newly-formulated analytical model. The first example concerns a seven-story model structure that was tested on the earthquake simulator at the University at Buflhlo and was also used as a verification example for program SAP2000. The second example concerns a two-tower, multi-story structure with a split-level seismic-isolation system. For purposes of verification, key results produced by 3D-BASIS-ME-MB are compared to experimental results, or results obtained from other structural/finite element programs. In both examples, the analyzed structure is excited under conditions of bearing uplift, thus yielding a case of much interest in verifying the capabilities of the developed analysis tool.

关键词： seismic isolation nonlinear dynamic analysis uplift verification multiple superstructures/bases

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