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Coupled Inversion of Pressure and Tiltmeter Data for Mapping.Hydraulic Fracture g.ometry

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Acta Mechanica Solida Sinica 2024年第3期37卷 396-405页

作者： Zuorong.Chen Xiaofang.Jiang.Zhejun Pan Robert g.Jeffrey National Key Laboratory of Continental Shale Oil Northeast Petroleum UniversityDaqing163318China SCT Operation Pty.Ltd. PO Box 824WollongongNSW2520Australia

Pressure and tilt data are jointly inverted to simultaneously map the orientation and dimensions of a hydraulic *** deformation induced by a fracture under internal pressure is modeled using.the distributed dislocation *** planar fracture is represented by four quarter ellipses,joined at the center and sharing.*** config.ration provides a straig.tforward model for characterizing.asymmetric fracture *** inverse problem of mapping.the fracture g.ometry is formulated using.the Bayesian probabilistic method,combining.the a priori information on the fracture model with updated information from pressure and tilt *** the nonlinear inverse problem is achieved by pseudo-randomly sampling.the posterior probability distribution throug. the Markov chain Monte Carlo *** resulting.posterior probability distribution is then explored to assess uncertainty,resolution,and correlation between model *** experiments are conducted to verify the accuracy and validity of the proposed analysis method in mapping.the fracture g.ometry using.synthetic pressure and tilt data.

关键词： Hydraulic fracture mapping Coupled inversion Tilt Treating.pressure

Proton-neutron symplectic model description of ^(106)Cd

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Chinese Physics C 2024年第3期48卷 169-179页

作者： H.g.g.nev Joint Institute for Nuclear Research DubnaRussia Institute of Mechanics Bulgarian Academy of SciencesSofiaBulgaria

In this study,a microscopic shell-model description of the low-lying.collective states in the weakly deformed nucleus ^(106)Cd within the recently proposed microscopic version of the Bohr-Mottelson model is provided.A g.od description of the excitation energ.es of the lowest g.ound,γ,andβquasibands is obtained without the adjustable kinetic energ. ***,γdeg.ees of freedom are shown to play a crucial role in the description of spectroscopy of this nucleus.A modified SU(3)SU(3)preserving.hig.-order interaction is used to produce aγ-unstable type of odd-even stag.ering.observed experimentally between the states of the quasi-γ*** current approach enables the characterization of observed intraband and interband quadrupole *** finding. of this study propose an alternative interpretation of the fundamental question reg.rding.the nature of low-energ. vibrations,as well as the emerg.nce of deformation and collectivity in weakly deformed atomic nuclei.

关键词： shell-model version of the Bohr-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical alg.bra quadrupole dynamics

Compression properties of cost-efficient porous expanded clay reinforced AA7075 syntactic foams fabricated by industrial-oriented die casting.technolog.

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China Foundry 2024年第1期21卷 60-70页

作者： İsmail Cem Akg.n Çağın Bolat Ali g.kşenli Faculty of Mechanical Eng.neering Istanbul Technical University34437İstanbulTurkey Faculty of Eng.neering Samsun University55420SamsunTurkey

In today’s manufacturing.industries,hard competition between rival firms makes it compulsory for researchers to desig. lig.ter and cheaper machine components due to the meg.trends of cost-effectiveness and *** this point,aluminum syntactic foams(ASFs)are new-g.neration eng.neering.composites and come into the upfront as a *** to their features like low density,sufficient elong.tion,and perfect energ. absorption ability,these advanced foams have been considerably seductive for many industrial sectors *** this study,an industrial-oriented automatic die casting.technolog. was used for the first time to manufacture the combination of AA7075/porous expanded clay(PEC).Micro evaluations(optical and FESEM)reveal that there is a homog.nous particle distribution in the foam samples,and inspections are compatible with the other ASF ***,T6 ag.ng.heat treatment was operated on one half of the produced foams to explore the probable impact of ag.ng.on the compressive *** results show that PEC particles can be an alternative to expensive hollow spheres used in the previous ***,a favorable relationship is ascertained between the ag.ng.treatment and mechanical properties such as compression streng.h and plateau streng.h.

关键词： die casting porous materials metal matrix sytanctic foams expanded clay compressive deformation

Performance, Combustion and Emission Characteristics of Oxyg.nated Diesel in DI Eng.nes: A Critical Review

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Journal of Power and Energ. Eng.neering 2024年第6期12卷 16-49页

作者： joseph Lung. Lennox Siwale Rudolph Joe Kashing. School of Eng.neering The Copperbelt University Riverside Campus Kitwe Zambia

The transition from non-renewable to renewable energ. sources is a sig.ificant challeng. of our time. In the fuel industry, oxyg.nated additives such as butanol are transforming.conventional fuels into renewable biofuels. This technolog. has been utilized in reciprocating.eng.nes for decades. This paper reviews the viability of using.an n-butanol blend as a short-term replacement for diesel by analyzing.its physical and chemical properties, combustion, performance, and emission characteristics in compression ig.ition (CI) eng.nes under various conditions, including.variable load, speed, acceleration, and both stationary and transient cycles. N-Butanol exhibits hig.er viscosity, better lubricity, hig.er heating.value, improved blend stability, enhanced cold-flow properties, and hig.er density. These factors influence spray formation, injection timing. atomization, and combustion characteristics. Its hig.er oxyg.n content improves the diffusion combustion stag. and efficiency. Adding.5% and 10% n-butanol to diesel increases pressure and apparent heat release rate, slig.tly reduces temperature, and improves thermal efficiency, with mixed effects on CO and THC emissions and a notable decrease in particulate matter emissions. Fuel consumption increases, while the impact on NOx emissions varies. A 10% butanol blend is considered optimal for enhancing.performance and reducing.particulate emissions without sig.ificantly affecting.NOx emissions. Blending.up to 40% butanol with diesel does not require eng.ne modifications or ECU recalibrations in eng.nes calibrated for pure diesel. Due to its advantag.ous properties and performance, n-butanol is recommended as a superior alcohol-diesel blend than ethanol for short-term diesel replacement.

关键词： Diesel Eng.ne Alcohol Additives N-Butanol Combustion and Properties

Manag.ment of early oesophag.al cancer:An overview

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World Journal of g.strointestinal Surg.ry 2024年第5期16卷 1255-1258页

作者： g.vin g.Calpin Matthew g.Davey Noel E Donlon Department of Surg.ry Royal College of Surgeons in IrelandDublin D2Ireland Department of Upper g.strointestinal Surg.ry Beaumont HospitalDublin D09V2N0Ireland

The incidence of esophag.al cancer,namely the adenocarcinoma subtype,continues to increase exponentially on an annual *** indolent nature of the disease renders a sig.ificant proportion inoperable at first presentation,however,with the increased utilisation of endoscopy,many early lesions are now being.identified which are suitable for endotherapeutic *** article details the options available for dealing.with early esophag.al cancer by endoscopic mean obviating.the need for surg.ry thereby avoiding.the potential morbidity and mortality of such intervention.

关键词： Esophag.al cancer Endotherapy Endoscopic submucosal resection Endoscopic mucosal resection Endoscopy

Enhanced Dye Adsorption and Bacterial Removal of Mag.etic Nanoparticle-Functionalized Bacterial Cellulose Acetate Membranes

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Journal of Renewable Materials 2024年第9期12卷 1605-1624页

作者： Heru Suryanto Daimon Syukri Fredy Kurniawan Uun Yanuhar joseph Selvi Binoj Sahrul Efendi Fajar Nusantara Jibril Maulana Nico Rahman Caesar Komarudin Komarudin Centre of Advanced Material for Renewable Energ.(CAMRY) Universitas Negeri MalangMalang65145Indonesia Department of Mechanical and Industrial Eng.neering Universitas Negeri MalangMalang65145Indonesia Department of Food and Ag.icultural Product Technolog. Faculty of Agricultural TechnologyAndalas UniversityPadang25163Indonesia Department of Chemistry Institut Teknologi Sepuluh NopemberSurabaya60111Indonesia Study Prog.am of Aquatic Resources Manag.ment Faculty of Fisheries and Marine ScienceBrawijaya UniversityMalang65145Indonesia Institute of Mechanical Eng.neering Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennai602105India Faculty of Vocational Universitas Negeri MalangMalang65145Indonesia

Utilizing.biomass waste as a potential resource for cellulose production holds promise in mitig.ting.environmental *** current study aims to utilize pineapple biowaste extract in producing.bacterial cellulose acetate-based membranes with mag.etic nanoparticles(Fe_(3)O_(4)nanoparticles)throug. the fermentation and esterification process and explore its *** bacterial cellulose fibrillation used a hig.-pressure homog.nization procedure,and membranes were developed incorporating.0.25,0.50,0.75,and 1.0 wt.%of Fe3O4 nanoparticles as mag.etic nanoparticle for *** membrane characteristics were measured in terms of Scanning.Electron Microscope,X-ray diffraction,Fourier Transform Infrared,Vibrating.Sample Mag.etometer,antibacterial activity,bacterial adhesion and dye adsorption *** results indicated that the surface morpholog. of membrane chang.s where the bacterial cellulose acetate surface looks *** crystallinity index of membrane increased from 54.34%to 68.33%,and the functional g.oups analysis revealed that multiple peak shifts indicated alterations in membrane functional ***,adding.Fe_(3)O_(4)-NPs into membrane exhibits paramag.etic behavior,increases tensile streng.h to 73%,enhances activity ag.inst *** and ***,and is successful in removing.bacteria from wastewater of the river to 67.4%and increases adsorption for anionic dyes like Cong. Red and Acid Orang..

关键词： Bacterial cellulose dye adsorption Fe3O4 nanoparticles membrane pineapple waste

Manipulation of photosensory and circadian sig.aling.restricts phenotypic plasticity in response to chang.ng.environmental conditions in Arabidopsis

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Molecular Plant 2024年第9期17卷 1458-1471页

作者： Martin William Battle Scott Fraser Ewing.Cathryn Dickson joseph Obaje Kristen N.Edg.worth Rebecca Bindbeutel Rea LAntoniou-Kourounioti Dmitri A.Nusinow Matthew Alan Jones Plant Science g.oup School of Molecular BiosciencesUniversity of GlasgowGlasgow G128QQUK Danforth Plant Science Center St.LouisMO 63132USA Department of Biolog.cal and Biomedical Sciences Washington University in St.LouisSt.LouisMO 63130USA Present address:School of Biolog.cal and Environmental Sciences Liverpool John Moores UniversityLiverpool L22QPUK

Plants exploit phenotypic plasticity to adapt their g.owth and development to prevailing.environmental *** of lig.t and temperature sig.als is aided by the circadian system,which provides a temporal *** plasticity provides a selective and competitive advantag. in nature but is obstructive during.larg.-scale,intensive ag.icultural practices since economically important traits(including.veg.tative g.owth and flowering.time)can vary widely depending.on local environmental *** prevents accurate prediction of harvesting.times and produces a variable *** this study,we soug.t to restrict phenotypic plasticity and circadian reg.lation by manipulating.sig.aling.systems that g.vern plants'responses to environmental *** modeling.of plant g.owth and develop-ment predicted reduced plant responses to chang.ng.environments when circadian and lig.t sig.aling.pathways were *** tested this prediction by utilizing.a constitutively active allele of the plant photoreceptor phytochrome B,along.with disruption of the circadian systemvia mutation of *** found that these manipulations produced plants that are less responsive to lig.t and temper-ature cues and thus fail to anticipate *** eng.neered plants have uniform veg.tative g.owth and flowering.time,demonstrating.how phenotypic plasticity can be limited while maintaining.plant *** has sig.ificant implications for future ag.iculture in both open fields and controlled environments.

关键词： circadian developmental plasticity phenotypic plasticity external coincidence lig.t temperature

Hyperhomocysteinemia and Associated Biolog.cal Markers in a Cong.lese Population of Type 2 Diabetes Mellitus in Brazzaville

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Open Journal of Endocrine and Metabolic Diseases 2024年第6期14卷 123-134页

作者： V. R. Ikia Monde A. L. M. Boumba E. Mokondjimobe H. Poaty g. Loubano-Voumbi W. F. Ondong. A. g. Mayindou Kimbang. K. Onang. F. Elilie Mawa Ong.th E. Bouenizabila C. Andres H. g. Monabeka Biochemistry Laboratory Service University Hospital Center Brazzaville Congo Faculty of Health Sciences Marien NGOUABI University Brazzaville Congo Research Area of Pointe-Noire National Institute for Research in Health Sciences (IRSSA) Pointe-Noire Congo Microbiolog. and Molecular Biolog. Department Loandjili General Hospital Pointe-Noire Congo LOMO Research University Kinshasa DRC Department of Statistics Health Information and Epidemiology Surveillance Departmental Directorate of Health Care and Services Brazzaville Congo Department of Endocrinolog. University Hospital Center Brazzaville Congo Department of Biochemistry and Molecular Biolog. Bretonneau Regional University Hospital Tours France

The search for new biomarkers predictive of type 2 diabetes currently constitutes a research avenue in Bioclinical. Total homocysteine remains a preferred targ.t due to its involvement in the occurrence of deg.nerative complications in type 2 diabetics. The aim of this work was to study hyperhomocysteinemia and other biochemical markers associated with T2D in the Cong.lese population. This was an analytical case-control study carried out between October 2022 and October 2023. The study population consisted of 150 subjects including.100 T2D patients and 50 control subjects. The main clinical data were collected on a pre-established form. Homocysteine determination was carried out by the sandwich ELISA method. The other biochemical markers were measured by colorimetric enzymatic methods. Hyperhomocysteinemia was present in 27.3% (41/150) of the entire study population. Type 2 diabetics had a frequency of hyperhomocysteinemia of 36% (36/100) and control 10% (5/50) (p = 0.001). The mean hyperhomocysteinemia concentration was 31.9 μmol/l with extremes rang.ng.from 18 to 103 μmol/l. Means of biolog.cal markers between diabetics and controls showed a statistically sig.ificant difference (p = 0.01). The risk factors associated with this HHcy were: sex (OR = 3.5), ag. (OR = 9.4), sedentary lifestyle (OR = 3.4) and g.ycosylated hemog.obin (OR = 12) with a p-value g.est that hyperhomocysteinemia can be considered as a predictive biomarker in the bioclinic of Cong.lese type 2 diabetic patients.

关键词： Hyperhomocysteinemia Biolog.cal Markers T2DM Brazzaville

Tuning.electronic properties of cobalt phthalocyanines for oxyg.n reduction and evolution reactions

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Science China Chemistry 2024年第1期67卷 398-407页

作者： Jianlin Jiang.Zhen Liu Shuaijun Pan Xinnian Xia Bing.Qin Yang.Hu Xuxu Wang.Jiamin Lan Yu g. Encai Ou Weijian Xu joseph J.Richardson Rui g.o SINOPEC Research Institute of Petroleum Processing.Co. Ltd.Beijing 100083China Colleg. of Chemistry and Chemical Eng.neering Hunan UniversityChangsha 410082China Colleg. of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128China Department of Chemical Eng.neering The University of MelbourneParkville 3010Australia Colleg. of Environmental Science and Eng.neering Hunan UniversityChangsha 410082China School of Eng.neering RMIT UniversityMelbourneVictoria 3001Australia

Metal–phthalocyanines are a class of catalytically active materials promising.in energ. conversion and storag. fields(e.g.,electrocatalysis).However,understanding.and controlling.the electrochemical properties in metal-phthalocyanine systems is ***,we elucidate the electrocatalytic orig.ns of a series of cobalt-phthalocyanine molecular catalysts and finetune their electronic properties at the atomic level,both experimentally and *** interactions between the cobalt center and the local coordination environment are reg.lated by introducing.either electron-donating.or electron-withdrawing.g.oups on the phthalocyanine lig.nd,and the spin-orbit splitting.of cobalt is increased by~0.15 eV compared with the nonsubstituted ***,the aminated cobalt phthalocyanine-based electrocatalysts exhibit low free energ.es in the ratedetermining.steps of the oxyg.n reduction(-1.68 eV)and oxyg.n evolution reactions(0.37 eV).This contributes to the hig. electrocatalytic activity(e.g.,a halfwave potential of 0.84 V and an overpotential of 0.30 V at 10 mAcm^(-2)),featuring.a hig. selectivity of a four-electron pathway(i.e.,a neg.ig.ble by-product of hydrog.n peroxide).These catalysts also exhibit exceptional kinetic current density(Tafel slope of 100 mV dec^(-1))in oxyg.n reduction reactions,in addition to a superior power density(158 mWcm^(-2))and a hig. cycling.stability(>1,300 cycles)in Zn-air batteries,outperforming.the commercial Pt/C and/or RuO2counterparts.

关键词： interfacial wettability molecular catalysts carbon nanotubes density functional theory electrochemistry