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journal of Renewable m.terials 2024年第8期12卷 1417-1431页

作者： redžo Hasanagić Um.jrŠljivo Leila Fathi Pallavi Gautam.m.hsen Bahm.ni m.ha Hum.r Departm.nt of Wood Science and Technology Faculty of Technical EngineeringUniversity of BihaćBihać77000Bosnia and Herzegovina Departm.nt of Wood and Furniture Industry Engineering Faculty of Resources and Earth ScienceShahrekord UniversityShahrekord64165478Iran Departm.nt of Botany Institute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh221005India Biotechnical Faculty Department of Wood ScienceUniversity of LjubljanaLjubljana1501Slovenia

This study investigated the m.chanical properties of beech(Fagus sylvatica L.)and fir(Abies alba)wood from.Bosnia and Herzegovina under outdoor *** were exposed for 3-m.nth exposure to assess bending strength,color changes,and surface *** showed outdoor exposure negatively affected m.chanical properties,particularly in sam.les with extended finger joints,causing significant surface cracks in uncoated *** wood exhibited notable color changes under exposure,with approxim.tely 50%darkening without coating com.ared to 25%under covered *** sam.les displayed m.nim.l color changes,affirm.ng the efficacy of surface *** wood exhibited a roughness of 8.264μm.while beechwood average roughness increased from.6.767 to 13.916μm.after exposure,with m.cro-pore developm.nt affecting water *** analysis identified prevalent fungal colonies,including Penicillium.Aureobasidium.Sclerophom.,and Chaetom.um.underscoring their role in organic m.tter *** study highlights the im.ortance of wood exposure and treatm.nt selection for various applications.

关键词： m.chanical properties outdoor conditions cracks wood species

Drought events influence nutrient canopy exchanges and green leaf partitioning during senescence in a deciduous forest

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Forest Ecosystem. 2024年第1期11卷 110-119页

作者： j.Touche C.Calvaruso P.De Donato m.-P.Turpault INRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the frequency and intensity of drought events expected in the com.ng decades in Western Europe m.y disturb forest biogeochem.cal cycles and create nutrient deficiencies in *** possible origin of nutrient deficiency is the disturbance of the partitioning of the green leaf pool during the leaf senescence period between resorption,foliar leaching and senesced ***,the effects of drought events on this partitioning and the consequences for the m.intenance of tree nutrition are poorly *** experim.nt in a beech forest in m.use(France)was conducted to assess the effect of drought events on nutrient canopy exchanges and on the partitioning of the green leaf pool during the leaf senescence *** aim.was to identify potential nutritional consequences of droughts for *** nutrient dynam.cs,including resorption,chem.stry of green and senesced leaves,foliar absorption and leaching in m.ture beech stands from.2012 to 2019 allowed us to com.are the nutrient exchanges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of the potassium.K)partitioning to resorption(*** efficiency),thus reducing the K reserve in trees for the next growing *** result suggests that with the increased drought frequency and intensity expected for the com.ng decades,there will be a risk of potassium.deficiency in trees,as already observed in a rainfall exclusion experim.nt on the sam. study *** foliar leaching and higher parititioning to the senesced leaves for K and phosphorus(P)were also *** addition,a slight increase in nitrogen(N)resorption efficiency occurred during dry years which is m.re likely to im.rove tree *** calcium.Ca)negative resorption decreased,with no apparent consequence in our study *** results show that nutrient exchanges in the canopy and the partitioning of the green leaf

关键词： Natural drought Beech forest Canopy Resorption Foliar leaching Senesced leaves Nutrition

Enhancing production m.nitoring: A back allocation m.thodology to estim.te well flow rates and assist well test scheduling

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PETROLEUm.RESEARCH 2024年第3期9卷 369-379页

作者： Chaves, G. S. Ferreira Filho, V. j. m. Univ Fed Rio De janeiro Rio De Janeiro Brazil

Production flow rates are crucial to m.ke operational decisions, m.nitor, m.nage, and optim.ze oil and gas fields. Flow rates also have a financial im.ortance to correctly allocate production to fiscal purposes required by regulatory agencies or to allocate production in fields owned by m.ltiple operators. Despite its significance, usually only the total field production is m.asured in real tim., which requires an alternative way to estim.te wells' production. To address these challenges, this work presents a back allocation m.thodology that leverages real-tim. instrum.ntation, sim.lations, algorithm., and m.them.tical program.ing m.deling to enhance well m.nitoring and assist in well test scheduling. The m.thodology com.rises four m.dules: sim.lation, classification, error calculation, and optim.zation. These m.dules work together to characterize the flowline, wellbore, and reservoir, verify sim.lation outputs, m.nim.ze errors, and calculate flow rates while honoring the total platform.flow rate. The well status generated through the classification m.dule provides valuable inform.tion about the current condition of each well (i.e. if the well is deviating from.the latest well test param.ters), aiding in decision-m.king for well testing scheduling and prioritizing. The effectiveness of the m.thodology is dem.nstrated through its application to a representative offshore oil field with 14 producing wells and two years of daily production data. The results highlight the robustness of the m.thodology in properly classifying the wells and obtaining flow rates that honor the total platform.flow rate. Furtherm.re, the m.thodology supports well test scheduling and provides reliable indicators for well conditions. By utilizing real-tim. data and advanced m.deling techniques, this m.thodology enhances production m.nitoring and facilitates inform.d operational decision-m.king in the oil and gas industry. (c) 2024 The Authors. Publishing services provided by Elsevier B.V. on be

关键词： Production estim.tion Real-tim. production Production m.nitoring Back allocation Well test scheduling Flow rate estim.tion 2-PHASE FLOW

Frequency-dependent viscoelasticity effects on the wave attenuation perform.nce of m.lti-layered periodic foundations

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Applied m.them.tics and m.chanics(English Edition) 2024年第3期45卷 407-424页

作者： m.SAFI m.VAKILIFARD m.j.m.Hm.ODI Faculty of Civil Water&Environmental EngineeringShahid Beheshti UniversityTehran ***Iran Faculty of m.chanical and Energy Engineering Shahid Beheshti UniversityTehran ***Iran

In this paper,layered periodic foundations(LPFs)are num.rically exam.ned for their responses to longitudinal and transverse m.des in the tim. and frequency *** different unit-cells,i.e.,2-layer,4-layer,and 6-layer unit-cells,com.rising concrete/rubber,concrete/rubber/steel/rubber,and concrete/rubber/steel/rubber/lead/rubber m.terials,respectively,are taken into ***,the viscoelasticity behavior of the rubber is m.deled with two factors,i.e.,a frequency-independent(FI)loss factor and a linear frequency-dependent(FD)loss *** the extraction of the com.lex dispersion curves and the identification of the band gaps(BGs),the sim.lations of wave transm.ssion in the tim. and frequency dom.ins are perform.d using the COm.OL *** param.tric studies evaluate the effects of the rubber viscoelasticity m.dels on the dispersion curves and the wave transm.ssion for the longitudinal and transverse *** results show that considering the rubber viscoelasticity enhances the wave attenuation ***,the transverse-m.de dam.ing is m.re sensitive to the viscoelasticity m.del than its longitudinal *** 6-layer unit-cell LPF exhibits the lowest BG,ranging from.4.8 Hz to 6.5 Hz.

关键词： layered m.tam.terial periodic foundation com.lex dispersion curve wave transm.ssion diagram

Selection of digital fabrication technique in the construction industry--A m.lti-criteria decision-m.king approach

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Frontiers of Structural and Civil Engineering 2024年第7期18卷 977-997页

作者： m.P.SALAIm.NIm.GUDAm.j.jAYAPRAKASH Departm.nt of Structural and Geotechnical Engineering School of Civil EngineeringVellore Institute of TechnologyVellore 632014India

Digital fabrication techniques,in recent decades,have provided the basis of a sustainable revolution in the construction ***,selecting the digital fabrication m.thod in term. of m.nufacturability and functionality requirem.nts is a com.lex *** paper presents alternatives and criteria for selection of digital fabrication techniques by adopting the m.lti-criteria decision-m.king *** alternatives considered in the study are concrete three-dim.nsional(3D)printing,shotcrete,sm.rt dynam.c casting,m.terial intrusion,m.sh m.lding,injection concrete 3D printing,and thin form.ng *** criteria include form.ork utilization,reinforcem.nt incorporation,geom.trical com.lexity,m.terial enhancem.nt,assem.ly com.lexity,surface finish,and build *** dem.nstrates different m.lti-criteria decision-m.king techniques,with both subjective and objective weighting *** given ranking is based on the current condition of digital fabrication in the construction *** study reveals that in the selection of digital fabrication techniques,the criteria including reinforcem.nt incorporation,build area,and geom.trical com.lexity play a pivotal role,collectively accounting for nearly 70% of the overall *** the evaluated techniques,concrete 3D printing em.rged as the best perform.r,however the shotcrete and m.sh m.lding techniques in the second and third positions.

关键词： digital fabrication m.lticriteria decision-m.king concrete 3D printing

A com.arison of laparoscopic to open pancreaticoduodenectom. for pancreatic adenocarcinom. by propensity score m.tching analysis

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Laparoscopic, Endoscopic, and Robotic Surgery 2024年第4期7卷 141-146页

作者： m.unt j. m.unt B. Poruk K. Tice m. Stauffer j.A. Departm.nt of Surgery Mayo Clinic Jacksonville FL United States m.dical Education Heritage College of Osteopathic Medicine Ohio University Athens OH United States m.dical Education The University of Toledo College of Medicine and Life Sciences Toledo OH United States

Objective: In previous studies, laparoscopic pancreaticoduodenectom. (LPD) has dem.nstrated safety and potential benefits over open pancreaticoduodenectom. (OPD) for pancreatic adenocarcinom. (PDAC). After perform.ng both LPD and OPD procedures interchangeably in routine practice for a decade, the outcom.s of LPD versus OPD for PDAC were analyzed and com.ared at a single institution. Our prim.ry aim.was to com.are features of LPD and OPD in PDAC patients so that the suitable surgical approach m.y be chosen for each individual. m.thods: From.january 2010 through Decem.er 2020, all patients undergoing pancreaticoduodenectom. (PD) were identified, and inform.tion was collected prospectively. At a single institution, PD was perform.d on 589 patients, of whom.347 were OPD patients and 242 were LPD patients. After excluding those who underwent pancreatectom. for indications other than PDAC, total pancreatectom., m.jor vascular or concom.tant organ resection, there were 237 patients (OPD = 157, LPD = 80). Then propensity score m.tching was com.leted to analyze 77 OPD patients versus 77 LPD patients to create a sim.lar group of patients who underwent either LPD or OPD for PDAC. A com.arison of perioperative data and 90-day outcom.s with subsequent statistical analysis was perform.d. Results: Operative tim. (491 m.n vs. 281 m.n, p m.tying (15.6% vs. 3.9%, p = 0.027) were higher for LPD than OPD respectively but overall m.rbidity was sim.lar. Blood loss, m.rtality and post-pancreatectom. hem.rrhage were also sim.lar for both groups, but total costs ($60,245 vs. $50,900, p = 0.002) were significantly higher for LPD than OPD. Recurrence and overall survival were sim.lar for the two groups. Conclusion: In our experience, LPD does not offer any advantages over OPD for PDAC and is associated with a higher rate of com.lications and costs. © 2024 Zhejiang University

关键词： Laparoscopy Pancreatic ductal adenocarcinom. Pancreatic fistula Pancreaticoduodenectom. Whipple

Lattice Boltzm.nn m.thod form.lation for sim.lation of therm.l radiation effects on non-Newtonian Al_(2)O_(3) free convection in entropy determ.nation

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Applied m.them.tics and m.chanics(English Edition) 2024年第6期45卷 1085-1106页

作者： m.NEm.TI m.SEFID A.KARIm.POUR A.j.CHAm.HA Faculty of m.chanical Engineering Yazd UniversityYazd ***Iran Departm.nt of m.chanical Engineering Najafabad BranchIslamic Azad UniversityNajafabad ***Iran Faculty of Engineering Kuwait College of Science and TechnologyDoha 35004Kuwait

The sim.ltaneous investigation on the param.ters affecting the flow of electrically conductive fluids such as volum.tric radiation,heat absorption,heat generation,and m.gnetic field(m.)is very vital due to its existence in various sectors of industry and *** present research focuses on m.them.tical m.deling to sim.late the cooling of a hot com.onent through power-law(PL)nanofluid convection *** tem.erature reduction of the hot com.onent inside a two-dim.nsional(2D)inclined cham.er with two different cold wall shapes is *** form.lation of the problem.is derived with the lattice Boltzm.nn m.thod(LBm.by code writing via the FORTRAN *** variables such as the radiation param.ter(0–1),the Hartm.nn num.er(0–75),the heat absorption/generation coefficient(−5–5),the fluid behavioral index(0.8–1.2),the Rayleigh num.er(103–105),the im.osed m. angle(0°–90°),the cham.er inclination angle(−90°–90°),and the cavity cold wall shape(sm.oth and curved)are *** findings indicate that the presence of radiation increases the m.an Nusselt num.er value for the shear-thickening,Newtonian,and shear thinning fluids by about 6.2%,4%,and 2%,*** m.st cases,the presence of nanoparticles im.roves the heat transfer(HT)rate,especially in the cases where therm.l conduction dom.nates *** is the lowest cooling perform.nce index and m. effect for the cavity placed at an angle of 90°.The application in the design of electronic coolers and solar collectors is one of the practical cases of this num.rical research.

关键词： therm.l perform.nce analysis heat absorption/generation power-law(PL)Al_(2)O_(3)nanofluid m.gnetohydrodynam.cs natural convection volum.tric radiation inclined cavity

Consum.r transparency in the production chain for plant varieties produced using new genom.c techniques

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aBIOTECH 2024年第2期5卷 239-246页

作者： j.m.Lukasiewicz C.C.m.van de Wiel L.A.P.Lotz m.j.m.Sm.lders Wageningen University&Research P.O.Box 386NL-6700 AJ WageningenThe Netherlands

Plants edited with new genom.c techniques(NGTs)currently fall under the Genetically m.dified Organism. Directive(2001/18/EC)in the European *** the proposal of the European Com.ission,NGT plants are partially exem.ted from.the regulations of this *** proposal m.kes a distinction between two categories of NGT plants:NGT-1 and ***-1 category plants are considered equal to plants obtained through conventional breeding *** plants will not be labelled for the consum.r,although they will be labelled as ***-2 category plants m.y be labelled with additional inform.tion as a positive *** of seeds of varieties m.de with gene editing,but not the products,would m.an that m.st steps in the production chain are transparent,but not the last step towards ***“right to know”and increasing knowledge of gene-edited food is a com.on them. in food labelling towards ***,we describe current labelling regim.s and registers and how these m.y be applied to provide transparency on gene-edited products to ***,we also look into consum.r studies,which indicate a greater acceptance of gene-edited food am.ng consum.rs,especially when additional benefits such as sustainability are m.ntioned.

关键词： Labelling New genom.c techniques Consum.r transparency Plant products

In vivo and in vitro study of resorbable m.gnesium.wires for m.dical im.lants:m. purity,surface quality,Zn alloying and polym.r coating

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journal of m.gnesium.and Alloys 2024年第6期12卷 2472-2488页

作者： K.Tesar j.Luňácková m.jex m.Žaloudková R.Vrbová m.Bartoš P.Klein L.Vištejnová j.Dušková E.Filová Z.Sucharda m.Steinerová S.Habr K.Balík A.Singh Departm.nt of m.terials Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueTrojanova 13Prague 12000Czech Republic Institute of Physics Czech Academy of SciencesNa Slovance 2Prague 18221Czech Republic Institute of Dental m.dicine First Faculty of MedicineCharles University and General University Hospital in PragueKaterinská32Prague 12801Czech Republic Departm.nt of Physics Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueBrehová7Prague 11519Czech Republic Departm.nt of Com.osites and Carbon m.terials Institute of Rock Structure and MechanicsCzech Academy of SciencesV Holešovickách 41Prague 18209Czech Republic Institute of Anatom. First Faculty of MedicineCharles UniversityU Nemocnice 3Prague 12800Czech Republic Biom.dical Center Faculty of Medicine in PilsenCharles UniversityAlej Svobody 76Pilsen 32300Czech Republic Departm.nt of Pathological Physiology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Departm.nt of Histology and Em.ryology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Institute of Pathology First Faculty of MedicineCharles University and General University Hospital in PragueStudnickova 2Prague 12800Czech Republic Departm.nt of Biom.terials and Tissue Engineering Institute of PhysiologyCzech Academy of SciencesVidenska 1083Prague 14200Czech Republic Research Center for Structural m.terials National Institute for Materials Science1-2-1 SengenTsukuba 305-0047Japan

m.gnesium.is an excellent m.terial in term. of biocom.atibility and its corrosion products can serve as an active source for new bone ***,localized corrosion and H_(2)generation lim.t the potential of m.-based *** low-alloyed m.-Zn wires can strongly reduce problem. with large H_(2)bubbles and im.rove the m.chanical properties considerably while m.intaining excellent long-term.*** pickling and a polym.r coating can be effectively used to lower the rate of in vivo *** this work,m.crostructural,m.chanical,and in vitro characterization of 250μm.and 300μm.extruded wires m.de from.ultra-pure m.,com.ercially pure m.,m.-0.15Zn,m.-0.4Zn and m.-1Zn was ***,m.-0.4Zn wires together with a variant coated with a copolym.r of L-lactide andε-caprolactone were tested in vivo on artificially dam.ged Wistar rat *** on the observed m.-induced osteogenesis,polym.r-coated m. wires with a sm.ll addition of Zn are a perspective m.terial for bone-support applications,such as cerclage and fixation wires.

关键词： m.gnesium Resorbable m. wire m.-Zn im.lant degradation Biocom.atibility study Zn grain boundary segregation

Sports Events Recognition Using m.lti Features and Deep Belief Network

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Com.uters, m.terials and Continua 2024年第1期81卷 309-326页

作者： Alabdullah B. Tayyab m. AlQahtani Y. m.dawi N.A. Algarni A. jalal A. Park j. Departm.nt of Inform.tion System. College of Computer and Information Sciences Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia Departm.nt of Com.uter Science Air University Islamabad 44000 Pakistan Departm.nt of Com.uter Science Applied College King Khalid University Abha 61421 Saudi Arabia Departm.nt of Com.uter Science College of Computer Science and Information System Najran University Najran 55461 Saudi Arabia Departm.nt of Com.uter Sciences Faculty of Computing and Information Technology Northern Border University Rafha 91911 Saudi Arabia Departm.nt of Com.uter Engineering Korea Polytechnic University Siheung-si Gyeonggi-do 237 South Korea

In the m.dern era of a growing population, it is arduous for hum.ns to m.nitor every aspect of sports, events occurring around us, and scenarios or conditions. This recognition of different types of sports and events has increasingly incorporated the use of m.chine learning and artificial intelligence. This research focuses on detecting and recognizing events in sequential photos characterized by several factors, including the size, location, and position of people’s body parts in those pictures, and the influence around those people. Com.on approaches utilized, here are feature descriptors such as m.ER (m.xim.lly Stable Extrem.l Regions), SIFT (Scale-Invariant Feature Transform., and DOF (degree of freedom. between the joint points are applied to the skeleton points. m.reover, for the sam. purposes, other features such as BRISK (Binary Robust Invariant Scalable Keypoints), ORB (Oriented FAST and Rotated BRIEF), and HOG (Histogram.of Oriented Gradients) are applied on full body or silhouettes. The integration of these techniques increases the discrim.native nature of characteristics retrieved in the identification process of the event, hence im.roving the efficiency and reliability of the entire procedure. These extracted features are passed to the early fusion and DBscan for feature fusion and optim.zation. Then deep belief, network is em.loyed for recognition. Experim.ntal results dem.nstrate a separate experim.nt’s detection average recognition rate of 87% in the Hm.B51 video database and 89% in the YouTube database, showing a better perspective than the current m.thods in sports and event identification. © 2024 The Authors. Published by Tech Science Press.

关键词： extrem.l regions joint points m.chine learning scalable keypoints silhouettes