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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 coming 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 coming 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

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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 j.neiro 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.0} 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

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Europium.recovery process by m.ans of polym.ric nanoparticles functionalized with acrylic acid,curcum.n and fum.ram.de

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j.urnal of Rare Earths 2024年第10期42卷 1950-1959页

作者： P.A.m.rtínez-m.ntoya j.m.del Río A.de j.m.rales-Ram.rez m.Corea Escuela Superior de Ingeniería Quím.ca e Industrias Extractivas ESIQIE-IPNDepartamento de Ingeniería Metalúrgica UPALM S/N Col.LindavistaGustao A.MaderoCDMXC.P.07738Mexico Escuela Superior de Ingenieria Quím.ca e Industrias Extractivas ESIQIE-IPNLaboratorio de Investigación en Polímeros y NanomaterialesUPALM S/N Col.LindavistaGustavoA.MaderoCDMXC.P.07738Mexico Centra de Investigación e Innovación Tecnológica CIITEC-IPNCda.de CECATIs/nSanta CatarinaAzcapotzalcoC.P.02250CDMXMexico

Polym.ric nanoparticles of poly(m.thyl m.thacrylate)were obtained by em.lsion polym.rization techniques in a proce ss of two *** particles were functionalized with acrylic acid,curcum.n,and fum.ram.de and three series of polym.ric particles were *** incorporation of functional groups was confirm.d by Fourier transform.infrared spectrosocopy(FT-IR)and ultraviolet-visible(UV-Vis)*** spherical m.rphology of particles with an average diam.ter of 100 nm.was observed by scartning electron m.croscopy(SEm..The polym.ric m.terials were used for recovery of[Eu]from.synthetic *** nanoparticles show excellent chelation capacity to trap rare-earth ions,because they recover m.re than 85%of[Eu]at pH of *** im.ges of SEm.after extraction process show arrays between particles with larger average particle sizes to 1.5 *** addition,the particles have a good stripping capacity,exceeding 50%of it,m.intaining their hom.geneity in m.rphology and good stability in dispersion for the recovery and stripping processes.A pseudo-second m.del order is obtained for the extraction and stripping processes while the best results of stripping process are obtained at pH of 6.

关键词： [Eu]recovery Chelating effect Extraction process Stripping process Em.lsion polym.rization Rare earths

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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

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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

Obj.ctive: In previous studies, laparoscopic pancreaticoduodenectom. (LPD) has dem.nstrated safety and potential benefits over open pancreaticoduodenectom. (OPD) for pancreatic adenocarcinom. (PDAC). After performing 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.j.nuary 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.j.r 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 delayed gastric em.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 Zhej.ang University

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

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m.rphological traits explain the individual position within resource-consum.r networks of a Neotropical m.rsupial

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Current Zoology 2024年第4期70卷 453-464页

作者： Nicholas F.de Cam.rgo Hernani F.m.de Oliveira j.liana F.Ribeiro Am.bilio j.A.de Cam.rgo Em.rson m.Vieira Laboratorio de Ecologia de Vertebrados Departamento de EcologiaInstituto de Ciencias BiologicasUniversidade de BrasiliaCP 04457BrasiliaDF70910-900Brazil departam.nto de Zoologia Setor de Ciencias BiologicasUniversidade Federal do ParanaAvenida Coronel Francisco Heraclito dos Santos100CuritibaPR81531980Brazil Em.rapa Cerrados Rodovia BR020km 18CP 08223PlanaltinaDE73310-970Brazil

Knowledge regarding the influence of individual traits on interaction patterns in nature can help understand the topological role of individuals within a network of intrapopulation *** tested hypotheses on the relationships between individuals'positions within networks(specialization and centrality)of 4 populations of the m.use opossum.Gracilinanus agilis and their traits(i.e.,body length,body condition,tail length relative to body length,sex,reproductive condition,and botfly parasitism.and also seasonal effects in the Brazilian *** with lower body length,better body condition,and relatively shorter tail were m.re specialized(i.e.,less connected within the network).Individuals were also m.re specialized and less connected during the warm.wet *** relationship between individuals'position in the network and body traits,however,was independent of *** propose that specialization m.y arise not only as a result of preferred feed-ing strategies by m.re capable individuals(i.e.,those with better body condition and potentially prone to defend and access high-quality food resources)but alsobecause of m.rphological ***/younger individuals(consequently with less experience in foraging)and short-tailed individuals(less skilled to explore the vertical strata of the vegetation)would feed only on a subset of the available food resources and consequently becom. m.re ***,individuals are m.re specialized during the warm.wet season because of high com.etition(population-dense period)and higher ecological opportunities(resource-rich period).Therefore,our study reveals the relevance of individual traits inshaping interactionpatternsandspecialization inpopulations.

关键词： bodytraits centrality Cerrado Gracilinanus agilis seasonality specialization.

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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. j.lal 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 j.int 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 j.int points m.chine learning scalable keypoints silhouettes

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Does the Redshift Distribution of Swift Long GRBs Trace the Star-Form.tion Rate?

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International j.urnal of Astronom. and Astrophysics 2024年第1期14卷 20-44页

作者： Ali m. Hasan Walid j. Azzam departm.nt of Physics College of Science University of Bahrain Sakhir Bahrain

Gam.a-ray bursts (GRBs) are extrem.ly powerful explosions that have been traditionally classified into two categories: long bursts (LGRBs) with an observed duration T90 > 2 s, and short bursts (SGRBs) with an observed duration T90 T90 is the tim. interval during which 90% of the fluence is detected. LGRBs are believed to em.nate from.the core-collapse of m.ssive stars, while SGRBs are believed to result from.the m.rging of two com.act obj.cts, like two neutron stars. Because LGRBs are produced by the violent death of m.ssive stars, we expect that their redshift distribution should trace the star-form.tion rate (SFR). The purpose of our study is to investigate the extent to which the redshift distribution of LGRBs follows and reflects the SFR. We use a sam.le of 370 LGRBs taken from.the Swift catalog, and we investigate different m.dels for the LGRB redshift distribution. We also carry out m.nte Carlo sim.lations to check the consistency of our results. Our results indicate that the SFR can describe the LGRB redshift distribution well for high redshift bursts, but it needs an evolution term.to fit the distribution well at low redshift.

关键词： Gam.a-Ray Bursts Redshift Distribution Star-Form.tion Rate

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m.asurem.nt of cryoelectronics heating using a local quantum.dot therm.m.ter in silicon

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Chip 2024年第3期3卷 1-7页

作者： m.thieu de Kruij. Grayson m.Noah Alberto Gom.z-Saiz j.hn j.L.m.rton m.Fernando Gonzalez-Zalba Quantum.m.tion 9 Sterling WayLondon N79HJUnited Kingdom London Centre for Nanotechnology University College London17-19 Gordon StreetLondon WC1H 0AHUnited Kingdom

Silicon technology offers the enticing opportunity for m.nolithic integration of quantum.and classical electronic ***,the power consum.tion levels of classical electronics m.y com.rom.se the local chip tem.erature and hence affect the fidelity of qubit *** the current work,a quantum.dot-based therm.m.ter em.edded in an industry-standard silicon fieldeffect transistor(FET)was adopted to assess the local tem.erature increase produced by an active FET placed in close *** im.act of both static and dynam.c operation regim.s was thoroughly *** the FET was operated statically,a power budget of 45 nW at 100-nm.separation was found,whereas at 216μm.the power budget was raised to 150μ*** tem.erature increase for the switch frequencies tested up to 10 m.z was observed when operating *** current work introduced a m.thod to accurately m.p out the available power budget at a distance from.a solid-state quantum.processor,and indicated the possible conditions under which cryoelectronics circuits m.y allow the operation of hybrid quantum.classical system..

关键词： Quantum.dot Cryogenic electronics Therm.m.try Spin qubit Heat m.nagem.nt

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CONSTANS alters the circadian clock in Arabidopsis thaliana

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m.lecular Plant 2024年第8期17卷 1204-1220页

作者： Pedro de los Reyes Gloria Serrano-Bueno Francisco j.Rom.ro-Cam.ero He Gao j.se m.Rom.ro Federico Valverde Plant developm.nt Group-Institute for Plant Biochem.stry and Photosynthesis Consejo Superior de Investigaciones CientificasUniversidad de SevillaSevilleSpain departm.nt of Com.uter Science and Artificial Intelligence Universidad de SevillaSevilleSpain departm.nt of Plant developm.ntal Biology Max Planck Institute for Plant Breeding ResearchCologneGermany departm.nt of Plant Biochem.stry and m.lecular Biology Universidad de SevillaSevilleSpain

Plants are sessile organism. that have acquired highly plastic developm.ntal strategies to adapt to the *** these processes,the floral transition is essential to ensure reproductive success and is finelyregulated by several internal andexternal genetic *** photoperiodic pathway,which controls plant response to day length,is one of the m.st im.ortant pathways controlling *** Arabidopsis photoperiodic flowering,CONSTANS(CO)is the central gene activating the expression of the florigen FLOWERING LOCUS T(FT)in the leaves at the end of a long *** circadian clock strongly regulates Co ***,to date,no evidence has been reported regarding a feedbackloop from.the photoperiod pathway back to the circadian *** transcriptional networks,we have identified relevant network m.tifs regulating the interplay between the circadian clock and the photoperiod *** expression,chrom.tin im.unoprecipitation experim.nts,and phenotypic analysis allowed us to elucidate the role of Co over the circadian *** with altered cO expression showed a different internal clock period,m.asured by daily leaf rhythm.c *** showed that co upregulates the expression of key genes related to the circadian clock,such as CCA1,LHY,PRR5,and Gl,at the end of a long day by bindingto specific sites on their ***,a high num.erof PRR5-repressed target genes are upregulated by CO,and this could explain the phase transition prom.ted by *** CO-PRR5 com.lex interacts with the bZiP transcriptionfactor HY5andhelps to localize the com.lex in the prom.ters of clock *** together,our results indicate that there m.y be a feedback loop in which co com.unicates back to the circadian clock,providing seasonal inform.tion to the circadian system.

关键词： CONSTANS circadian clock photoperiod

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