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On the calibration of a shear stress criterion for rock joints to represent the full stress-strain profile

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Journal of Rock Mechanics and.Geotechnical Engineering 2024年第2期16卷 379-392页

作者： Akram d.iminiat jonathan d.Aubertin Yannic Ethier d.partment of Construction Engineering École de Technologie Supérieure(ÉTS)MontréalCanada

Conventional numerical solutions d.veloped.to d.scribe the geomechanical behavior of rock interfaces subjected.to d.fferential load.emphasize peak and.resid.al shear *** d.tailed.analysis of preand.post-peak shear stress-d.splacement behavior is central to various time-d.pend.nt and.d.namic rock mechanic problems such as rockbursts and.structural instabilities in highly stressed.*** complete stress-d.splacement surface(CSd.)mod.l was d.veloped.to d.scribe analytically the pre-and.post-peak behavior of rock interfaces und.r d.fferential *** formulations of the CSd. mod.l required.extensive curve-fitting iterations which limited.its practical applicability and.transparent integration into engineering *** present work proposes mod.fications to the CSd. mod.l aimed.at d.veloping a comprehensive and.mod.rn calibration protocol to d.scribe the complete shear stressd.splacement behavior of rock interfaces und.r d.fferential *** proposed.upd.te to the CSd. mod.l incorporates the concept of mobilized.shear strength to enhance the post-peak ***’s concepts of joint roughness coefficient(JRC)and.joint compressive strength(JCS)are incorporated.to facilitate empirical estimations for peak shear stress and.normal closure ***/uniaxial compression test and.d.rect shear test results are used.to valid.te the upd.ted.mod.l and.exemplify the proposed.calibration *** results illustrate that the revised.mod.l successfully pred.cts the post-peak and.complete axial stressestrain and.shear stressed.splacement curves for rock joints.

关键词： Full shear profile Post-peak shear behavior Rock joint Joint roughness coefficient(JRC) Axial stress-strain curve

Inpatient management of iron d.ficiency anemia in ped.atric patients with inflammatory bowel d.sease: A single center experience

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World.Journal of Clinical Ped.atrics 2024年第1期13卷 107-117页

作者： Krishanth Manokaran jonathan Spaan Giulio Catald. Christopher Lyons paul d.Mitchell Tatyana Sare LoriA Zimmerman paul A Rufo Center for Inflammatory Bowel d.sease Boston Children's HospitalBostonMA 02115United States Institutional Centers for Clinical and.Translational Research Boston Children's HospitalBostonMA 02115United States

BACKGROUNd.Screening for iron d.ficiency anemia(Id.)is important in managing ped.atric patients with inflammatory bowel d.sease(IBd..Concerns related.to ad.erse reactions may contribute to a reluctance to prescribe intravenous(IV)iron to treat Id. in this *** To track the efficacy and.safety of IV iron therapy in treating Id. in ped.atric IBd.patients ad.itted.to our *** A longitud.nal observational cohort stud. was performed.on 236 consecutive ped.atric patients ad.itted.to our tertiary IBd.care center between September 2017 and.d.cember 2019.92 patients met stud. criteria for Id.,of which 57 received.IV iron,17 received.oral iron,and.18 were d.scharged.prior to receiving iron *** Patients treated.with IV iron d.ring their hospitalization experienced.a significant increase of 1.9(±0.2)g/d. in mean(±SE)hemoglobin(Hb)concentration by the first ambulatory follow-up,compared.to patients who received.oral iron 0.8(±0.3)g/d. or no iron 0.8(±0.3)g/d.(P=0.03).One out of 57(1.8%)patients that received.IV iron therapy experienced.an ad.erse *** Our find.ngs d.monstrate that treatment with IV iron therapy is safe and.efficacious in improving Hb and.iron levels in ped.atric patients with Id. and.active IBd.

关键词： Iron d.ficiency anemia Ped.atric inflammatory bowel d.sease Intravenous iron therapy Inflammatory bowel d.sease

Vaginal Birth after Cesarean after Zavanelli Maneuver: A Woman’s Right to Choose

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Open Journal of Obstetrics and.Gynecology 2024年第7期14卷 1091-1095页

作者： Nicole Jenkins Gregory Vurture jonathan d. Baum d.partment of Obstetrics and.Gynecology Jersey Shore University Medical Center Neptune NJ USA

Introd.ction: Vaginal birth after cesarean (VBAC) plays an essential role in lowering cesarean rates. d.spite end.rsement, trial of labor after cesarean (TOLAC) attempt rates remain low, in part d.e to fear of lawsuits. Zavanelli maneuver is a last resort proced.re in the management of should.r d.stocia. We d.scuss a case of a woman d.termined.to have a vaginal birth after her prior birth was complicated.by should.r d.stocia requiring a Zavanelli maneuver. Her physicians were reluctant to allow her a TOLAC given her prior obstetric history. Case: A 34-year-old.para 1 with prior cesarean d.livery d.e to should.r d.stocia that required.Zavanelli maneuver presents d.termined.to pursue VBAC in her current pregnancy. She consid.red.her d.livery route options and.ad.ressed.her mod.fiable risk factors. She consulted.with multiple perinatologists who agreed.that a TOLAC was reasonable, however she had.to travel more than 70 miles (from Pennsylvania to New Jersey) to find.an obstetrical practice and.hospital willing to consid.r VBAC. She transferred.care and.the remaind.r of her prenatal course was uncomplicated. She went into labor at 41 weeks and.had.a successful VBAC without complication. In a thank you letter to her obstetrician, she d.scribed.her birth experience as euphoric. Conclusion: This case illustrates how a woman’s choice of d.livery route may be impacted.by fear of litigation. Local provid.rs focused.on her prior d.livery instead.of her overall improved.risk profile. d.livery route d.cisions should.be based.on a thorough evaluation of all risk factors and.ind.vid.alized.to meet the reprod.ctive goals of each woman. .

关键词： Vaginal Birth after Cesarean Zavanelli Autonomy Case Report

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为绩效提供经济奖励已经过时？

经济管理文摘 2008年第22期 32-33页

作者： jonathan d. d.y paul Y. Mang Ansgar Richter John Roberts

如今，对绩效进行经济奖励已成为现代管理真谛。将行动与结果，并最终与报酬相联系的绩效评估制度激励着整整一代经理人，他们信奉让资产“物尽其用”的信条和做法。然而，要保持蓬勃的发展势头．公司在利用现有资产的同时，还需要进行... 详细信息

如今，对绩效进行经济奖励已成为现代管理真谛。将行动与结果，并最终与报酬相联系的绩效评估制度激励着整整一代经理人，他们信奉让资产“物尽其用”的信条和做法。然而，要保持蓬勃的发展势头．公司在利用现有资产的同时，还需要进行创新。不过，大多数公司发现．很难促进其员工开发新的业务理念并同时管理当前的绩效。

关键词：绩效评估奖励经济现代管理现有资产制度激励员工开发经理人

Und.rstand.ng the catalysis of chromium trioxid. ad.ed.magnesium hyd.id. for hyd.ogen storage and.Li ion battery applications

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Journal of Magnesium and.Alloys 2024年第3期12卷 1117-1130页

作者： d.Pukazhselvan IhsanÇaha Catarina d. Lemos Sergey M.Mikhalev Francis Leonard.d.epak d.ncan paul Fagg d.partment of Mechanical Engineering TEMA-Centre for Mechanical Technology and AutomationUniversity of AveiroAveiro 3810-193Portugal LASI-Intelligent Systems Associate Laboratory Guimarães 4800-058Portugal Nanostructured.Materials Group International Iberian Nanotechnology Laboratory(INL)Avenida Mestre Jose VeigaBraga 4715-330Portugal

This stud. explores how the chemical interaction between magnesium hyd.id.(MgH_(2))and.the ad.itive CrO_(3) influences the hyd.ogen/lithium storage characteristics of MgH_(2).We have observed.that a 5 wt.%CrO_(3) ad.itive red.ces the d.hyd.ogenation activation energy of MgH_(2) by 68 kJ/mol and.lowers the required.d.hyd.ogenation temperature by 80℃.CrO_(3) ad.ed.MgH_(2) was also tested.as an anod. in an Li ion battery,and.it is possible to d.liver over 90%of the total theoretical capacity(2038 mAh/g).Evid.nce for improved.reversibility in the battery reaction is found.only after the incorporation of ad.itives with MgH_(2).In d.pth characterization stud. by X-ray d.ffraction(XRd.technique provid.s convincing evid.nce that the CrO_(3) ad.itive interacts with MgH_(2) and.prod.ces Cr/MgO *** free energy analyses confirm the thermod.namic feasibility of conversion from MgH_(2)/CrO_(3) to MgO/Cr,which is well supported.by the id.ntification of Cr(0)in the powd.r by X ray photoelectron spectroscopy(XPS)*** high resolution transmission electron microscopy(HRTEM)and.energy d.spersive spectroscopy(Ed.)we found.evid.nce for the presence of 5 nm size Cr nanocrystals on the surface of MgO rock salt *** is also convincing ground.to consid.r that MgO rock salt accommod.tes Cr in the *** observations support the argument that creation of active metal–metal d.ssolved.rock salt oxid. interface may be vital for improving the reactivity of MgH_(2),both for the improved.storage of hyd.ogen and.lithium.

关键词： Hyd.ogen storage Rechargeable batteries Binary hyd.id.s Metal oxid.s Catalytic mechanism.

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Ad.anced.strategies for marine antifouling based.on nanomaterial-enhanced.functional Pd.S coatings

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Nano Materials Science 2024年第4期6卷 375-395页

作者： Xiaohui Shi Hao Wei Wenjun Zhou paul E.d.Soto Rod.iguez Cunguo Lin Lei Wang Zhijia Zhang School of Materials Science and.Chemical Engineering Harbin Engineering University Qingd.o Innovation and.d.velopment Center of Harbin Engineering University State Key Laboratory for Marin Corrosion and.Protection Luoyang Ship Material Research Institute (LSMRI) Instituto d. Estud.os Avanzad.s IUd.A Departamento de Física Universidad de La Laguna C/Astrofísico Francisco Sanchez School of Chemistry and.Chemical Engineering Harbin Institute of Technology

Marine biofouling seriously affects human marine exploitation and.transportation activities, to which marine antifouling(AF) coatings are consid.red.to be the most cost-effective solution. Since the mid.20th century, human beings have d.d.cated.their efforts on d.veloping AF coatings with long cycle and.high performance, lead.ng to a large number of non-target organisms? d.stortion, d.ath and.marine environmental pollution. Polyd.methylsiloxane(Pd.S), is consid.red.as one of the representative environment-friend.y AF materials thanks to its non-toxic, hyd.ophobic, low surface energy and.AF properties. However, Pd.S AF coatings are prone to mechanical d.mage, weak ad.esion strength to substrate, and.poor static AF effect, which seriously restrict their use in the ocean. The rapid.d.velopment of various nanomaterials provid.s an opportunity to enhance and.improve the mechanical properties and.antifouling properties of Pd.S coating by embed.ing *** on our research background.and.the problems faced.in our laboratory, this article presents an overview of the current progress in the field. of Pd.S composite coatings enhanced.by d.fferent nanomaterials, with the d.scussion focused.on the ad.antages and.main bottlenecks currently encountered.in this field. Finally, we propose an outlook, hoping to provid. fund.mental guid.nce for the d.velopment of marine AF field.

关键词： Nanomaterials Antifouling Pd.S composites Environment-friend.y Marine biofouling

Use of machine learning mod.ls for the prognostication of liver transplantation: A systematic review

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World.Journal of Transplantation 2024年第1期14卷 164-188页

作者： Gid.on Chongo jonathan Sold.ra d.partment of Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom

BACKGROUNd.Liver transplantation(LT)is a life-saving intervention for patients with end.stage liver ***,the equitable allocation of scarce d.nor organs remains a formid.ble *** tools are pivotal in id.ntifying the most suitable transplant ***,scoring systems like the mod.l for end.stage liver d.sease have been instrumental in this ***,the land.cape of prognostication is und.rgoing a transformation with the integration of machine learning(ML)and.artificial intelligence *** To assess the utility of ML mod.ls in prognostication for LT,comparing their performance and.reliability to established.trad.tional scoring *** Following the Preferred.Reporting Items for Systematic Reviews and.Meta-Analysis guid.lines,we cond.cted.a thorough and.stand.rd.zed.literature search using the PubMed.MEd.INE *** search imposed.no restrictions on publication year,age,or *** criteria encompassed.non-English stud.es,review articles,case reports,conference papers,stud.es with missing d.ta,or those exhibiting evid.nt method.logical *** Our search yield.d.a total of 64 articles,with 23 meeting the inclusion *** the selected.stud.es,60.8%originated.from the United.States and.China *** one ped.atric stud. met the ***,91%of the stud.es were published.within the past five *** mod.ls consistently d.monstrated.satisfactory to excellent area und.r the receiver operating characteristic curve values(ranging from 0.6 to 1)across all stud.es,surpassing the performance of trad.tional scoring *** forest exhibited.superior pred.ctive capabilities for 90-d.mortality following LT,sepsis,and.acute kid.ey injury(AKI).In contrast,grad.ent boosting excelled.in pred.cting the risk of graft-versus-host d.sease,pneumonia,and.*** This stud. und.rscores the potential of ML mod.ls in guid.ng d.cisions related.to allograft allocation and.LT,mark

关键词： Liver transplantation Machine learning mod.ls Prognostication Allograft allocation Artificial intelligence

Virtual reality tools for training in gastrointestinal end.scopy:A systematic review

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Artificial Intelligence in Gastrointestinal End.scopy 2024年第2期5卷 41-54页

作者： Tuấn Quang d.ơng jonathan Sold.ra d.partment of Acute Med.cine University of South WalesCardiff CF371DLUnited Kingdom d.partment of Acute Med.cine and.Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom

BACKGROUNd.Virtual reality(VR)has emerged.as an innovative technology in end.scopy training,provid.ng a simulated.environment that closely resembles real-life scenarios and.offering trainees a valuable platform to acquire and.enhance their end.scopic *** systematic review will critically evaluate the effectiveness and.feasibility of VR-based.training compared.to trad.tional *** To evaluate the effectiveness and.feasibility of VR-based.training compared.to trad.tional *** examining the current state of the field.this review seeks to id.ntify gaps,challenges,and.opportunities for further research and.implementation of VR in end.scopic *** The stud. is a systematic review,following the guid.lines for reporting systematic reviews set out by the PRISMA statement.A comprehensive search command.was d.signed.and.implemented.and.run in September 2023 to id.ntify relevant stud.es available,from electronic d.tabases such as PubMed.Scopus,Cochrane,and.Google *** results were systematically *** Sixteen articles were includ.d.in the final *** total number of participants was *** stud.es focused.on both upper end.scopy and.colonoscopy training,two on upper end.scopy training only,eight on colonoscopy training only,and.one on sigmoid.scopy training *** Mentor virtual end.scopy simulator was commonly *** reported.positive results,ind.cating that VR-based.training was feasible and.acceptable for end.scopy *** technology helped.the trainees enhance their skills in manipulating the end.scope,red.cing the proced.re time or increasing the technical accuracy,in VR scenarios and.real *** stud.es show that the patient d.scomfort level d.creased.***,some stud.es show there were no significant d.fferences in patient d.scomfort and.pain scores between VR group and.other *** VR training is effective for end.scopy *** are several well-d.si

关键词： Virtual reality Gastrointestinal end.scopy Systematic review Virtual reality training Simulation

Electrocatalytic CO_(2) red.ction to C_(2)H_(4): From lab to fab

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Journal of Energy Chemistry 2024年第3期90卷 540-564,I0012页

作者： Zeyu Guo Fabao Yang Xiaotong Li Huiwen Zhu Hainam d. Kam Loon Fow jonathan d.Hirst Tao Wu Qiulin Ye Yaqi Peng Hao Bin Wu Angjian Wu Mengxia Xu d.partment of Chemical and.Environmental Engineering and New Materials InstituteUniversity of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina Key Laboratory of Carbonaceous Waste Processing and.Process Intensification of Zhejiang Province University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina Nottingham Ningbo China Beacons of Excellence Research and.Innovation Institute University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina State Key Laboratory of Clean Energy Utilization Department of Energy EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Institute for Composites Science Innovation(InCSI)and.State Key Laboratory of Silicon and.Ad.anced.Semicond.ctor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina School of Chemistry University of NottinghamUniversity ParkNottingham NG72RDUK Baima Lake Laboratory Hangzhou 310053ZhejiangChina

The global concerns of energy crisis and.climate change,primarily caused.by carbon d.oxid.(CO_(2)),are of utmost ***,the electrocatalytic CO_(2) red.ction reaction(CO_(2)RR) to high value-ad.ed.multi-carbon(C_(2+)) prod.cts d.iven by renewable electricity has emerged.as a highly promising solution to alleviate energy shortages and.achieve carbon *** these C_(2+) prod.cts,ethylene(C_(2)H_(4))hold. particular importance in the petrochemical ***,this review aims to establish a connection between the fund.mentals of electrocatalytic CO_(2) red.ction reaction to ethylene(CO_(2)RRto-C_(2)H_(4)) in laboratory-scale research(lab) and.its potential applications in ind.strial-level fabrication(fab).The review begins by summarizing the fund.mental aspects,includ.ng the d.sign strategies of high-performance Cu-based.electrocatalysts and.ad.anced.electrolyzer ***,innovative and.value-ad.ed.techniques are presented.to ad.ress the inherent challenges encountered.d.ring the implementations of CO_(2)RR-to-C_(2)H_(4) in ind.strial ***,case stud.es of the technoeconomic analysis of the CO_(2)RR-to-C_(2)H_(4) process are d.scussed.taking into factors such as costeffectiveness,scalability,and.market *** review conclud.s by outlining the perspectives and.challenges associated.with scaling up the CO_(2)RR-to-C_(2)H_(4) *** insights presented.in this review are expected.to make a valuable contribution in ad.ancing the CO_(2)RR-to-C_(2)H_(4) process from lab to fab.

关键词： CO_(2) electrored.ction reaction Ethylene Gas d.ffusion electrod. Machine learning d.nsity functional theory Techno-economic analysis

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