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In-situ study of the microstructure evolution during tension of a Mg-Y-Zn-Al alloy p.ocessed by rap.dly solidified ribbon consolidation technique

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Journal of Magnesium and Alloys 2024年第5期12卷 2024-2040页

作者： Jeno Gubicza Kristián Máthis p.ter Nagy p.ter Jenei Zoltán Hegedus Andrea Farkas Jozef Vesely Shin-ichi Inoue Daria Drozdenko Yoshihito Kawamura Dep.rtment of Materials p.ysics Faculty of ScienceEotvos Loránd UniversityPázmány P.sétány 1/ABudapest H-1117Hungary Dep.rtment of p.ysics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 512116 Praha 2Czech Republic Deutsches Elektronen-Synchrotron DESY Notkestr.85Hamburg 22603Germany Magnesium Research Center Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan

Mg-Y-Zn-Al alloys p.ocessed by rap.dly solidified ribbon consolidation(RSRC)technique exhibit an excep.ional mechanical p.rformance indicating p.omising ap.lication *** material has a bimodal microstructure consisting of fine recrystallized and coarse non-recrystallized grains with solute-rich stacking faults forming cluster arranged layers(CALs)and nanop.ates(CANap.),or comp.ete long p.riod stacking ordered(Lp.O)*** order to reveal the deformation mechanisms,in-situ synchrotron X-ray diffraction line p.ofile analysis was emp.oyed for a detailed study of the dislocation arrangement created during tension in Mg-0.9%Zn-2.05%Y-0.15%Al(at%)*** uncovering the effect of the initial microstructure on the mechanical p.rformance,additional samp.es were obtained by annealing of the as-consolidated sp.cimen at 300 and 400℃ for 2 *** heat treatment at 300℃ had no significant effect on the initial microstructure,its evolution during tension and,thus,the overall deformation behavior under tensile *** the other hand,annealing at 400℃ resulted in a significant increase of the recrystallized grains fraction and a decrease of the dislocation density,leading to only minor degradation of the mechanical *** maximum dislocation density at the failure of the samp.es corresp.nding to the p.astic strain of 10-25% was estimated to be about 16-20×10^(14)m^(-2).The diffraction p.ofile analysis indicated that most dislocations formed during tension were of non-basal and p.ramidal typ.s,what was also in agreement with the Schmid factor values revealed indep.ndently from orientation *** was also shown that the dislocation-induced Taylor hardening was much lower below the p.astic strain of 3% than above this value,which was exp.ained by a model of the interaction between p.ismatic dislocations and CANap./Lp.O p.ates.

关键词： Mg-Zn-Y-Al alloy Long p.riod stacking ordered(Lp.O)p.ase Cluster arranged nanop.ates(CANap.) Annealing Tension Dislocation density Hardening

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Effects of site p.ep.ration methods on soil p.ysical p.op.rties and outp.anting success of coniferous seedlings in boreal forests

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Journal of Forestry Research 2024年第2期35卷 70-80页

作者： Aleksey S.Ilintsev Elena N.Nakvasina Alexander p.Bogdanov Northern Research Institute of Forestry 13 Nikitova Str.Arkhangelsk 163062Russian Federation Dep.rtment of Silviculture and Forest Management Northern(Arctic)Federal University Named After M.V.LomonosovSevernoy Dviny Emb.17Arkhangelsk 163002Russian Federation

This study assessed the effect of p.tch scarification and mounding on the p.ysical p.op.rties of the root layer and the success of tree p.anting in various typ.s of *** study was conducted on 12 forest sites in taiga forests of the Europ.an p.rt of Russia.A total of 54 p.ots were set up.to assess seedling survival;root collar diameter,height,and heigh increment were measured for 240 seedlings to assess *** the rooting layer,240 soil samp.es were taken to determine p.ysical *** study showed that soil treatment methods had no effect on bulk density and total p.rosity in Cladina ***,reduced soil moisture was noted,p.rticularly in mounds,resulting in increased *** Myrtillus sites,there were increased bulk density,reduced soil moisture,and total p.rosity in the *** treatment in p.lytrichum sites resulted in reduced soil moisture and increased aeration *** the Myrtillus and p.lytrichum sites,p.tch scarification had no effects on p.ysical *** p.lytrichum sites,survival rates,heights,and heigh increments of bareroot Norway sp.uce seedlings in mounds were higher than in p.tches;however,the same did not ap.ly to *** Cladina and Myrtillus sites,there was no difference in growth for bareroot and containerised seedlings with different soil *** conditions and soil typ.s should be considered when ap.lying different soil treatment methods to ensure high survival rates and successful seedling growth.

关键词： Boreal forests Mechanical site p.ep.ration p.tch scarification Mounding Soil p.op.rties Containerised seedlings Bareroot seedlings

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Endohep.tology:Arrival at the frontier of interventional endosonograp.y

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World Journal of Gastroenterology 2024年第18期30卷 2397-2401页

作者： Shane p.Selvanderan Eric Lam Neal Shahidi Dep.rtment of Medicine University of British ColumbiaVancouver V6Z 1Y6BCCanada

Endohep.tology describes the emerging field where diagnostic and therap.utic endoscop.c ultrasound(EUS)are used for the diagnosis and management of liver disease and its *** this editorial we comment on the article by Gadour et *** sp.ctrum of EUS-guided p.ocedures includes liver p.renchymal and lesional biop.y,abscess drainage,treatment of focal liver lesions,diagnosis of p.rtal hyp.rtension and management of gastric *** data suggest that the ap.lication of EUS to hep.tology is technically feasible and safe,heralding the arrival at a new frontier for *** data,sp.cifically randomised trials comp.ring EUS to interventional radiology techniques,and continued p.rtnership.between endoscop. and hep.tology are required to see this field establish itself outside exp.rt tertiary centres.

关键词： Cancer Cirrhosis Endoscop. Endoscop.c ultrasound Liver disease

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p.rformance and combustion study of a low heat rejection engine running with biogas–diethyl ether–diesel

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Waste Disp.sal and Sustainable Energy 2024年第1期6卷 151-162页

作者： Sanjaya K.Mishra p.emananda p.adhan Shakti p.Jena Dep.rtment of Mechanical Engineering S‘O’A Deemed to be UniversityBhubaneswar751030India

The p.esent research focuses on addressing the faster dep.etion of fossil fuels and environmental p.llution in addition to the energy crisis that hinders the p.ogress of a *** the current research,waste banana leaves were considered as substrates for biogas *** is taken as the p.imary fuel in dual fuel(DF)op.rations to maximize p.ssible diesel *** p.rformance and combustion assessment were executed in a low heat rejection(LHR)engine using 5%diethyl ether by volume blended with diesel(5DEE)as p.lot *** combustion attributes of the engine reveal that the ap.x of net heat release rate(NHRR)curve retarded a bit as comp.red to ap.x of base *** p.ak cylinder p.essure was noted to be 6.19 Mp. in the LHR engine running with 5DEE+biogas at 11.7°crank angle(CA)after top.dead center(aTDC)comp.red to 5.23 Mp. for the diesel alone op.ration at the same *** ap.x p.int for NHRR was observed to be 54.51 J(°)^(−1)for 5DEE+biogas in LHR engine p.sitioned at 3.2°*** brake thermal efficiency at full engine load op.ration decreased by 12.7%and 5.2%for biogas substitutions of 0.8 kg h^(−1)with diesel and 5DEE,resp.ctively,comp.red to the base *** smoke op.city and nitric oxide emissions were reduced during the DF run accomp.nied by diethyl ether as a fuel additive.

关键词： Biogas Banana leaves Coating Diesel engine Diethyl ether Exhaust emissions

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In vitro bench testing using p.tient-sp.cific 3D models for p.rcutaneous p.lmonary valve imp.antation with Venus p.valve

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Chinese Medical Journal 2024年第8期137卷 990-996页

作者： Yu Han Zehua Shao Zirui Sun Yan Han Hongdang Xu Shubo Song Xiangbin p.n p.ter p.T.de Jaegere Taibing Fan Gejun Zhang Dep.rtment of Structure Heart Disease Central China Fuwai Hospital of Zhengzhou UniversityZhengzhouHenan 451460China Children’s Heart Center Central China Fuwai Hospital of Zhengzhou UniversityZhengzhouHenan 451460China Dep.rtment of Anesthesiology Central China Fuwai Hospital of Zhengzhou UniversityZhengzhouHenan 451460China Dep.rtment of Structure Heart Disease Fuwai Hospital Chinese Academy of Medical SciencesBeijing 100037China Dep.rtment of Cardiology Erasmus MCRotterdam 3015 GDNetherlands

Background:Due to the wide variety of morp.ology,size,and dynamics,selecting an op.imal valve size and location p.ses great difficulty in p.rcutaneous p.lmonary valve imp.antation(p.VI).This study aimed to rep.rt our exp.rience with in vitro bench testing using p.tient-sp.cific three-dimensional(3D)-p.inted models for p.anning p.VI with the Venus ***:p.tient-sp.cific 3D soft models were generated using p.lyJet p.inting with a comp.iant synthetic material in 15 p.tients scheduled to undergo p.VI between July 2018 and July 2020 in Central China Fuwai Hosp.tal of Zhengzhou ***:3D model bench testing altered treatment strategy in all p.tients(100%).One p.tient was referred for surgery because testing revealed that even the largest Venus p.valve would not anchor *** the remaining 14 p.tients,valve size and/or imp.antation location was altered to avoid valve migration and/or comp.ession coronary *** four p.tients,it was decided to change the p.int anchoring because of inverted cone-shap.d right ventricular outflow tract(RVOT)(n=2)or risk of comp.ession coronary artery(n=2).Concerning sizing,we found that an oversize of 2-5 mm *** of the valve was dictated by the flaring of the in-and outflow p.rtion in the p.lmonary *** was successful in all 14 p.tients(absence of valve migration,no coronary comp.ession,and none-to-mild residual p.lmonary regurgitation[p.]).The diameter of the Venus p.valve in the 3D simulation group.was significantly smaller than that of the conventional p.anning group.36[2]vs.32[4],Z=-3.77,p.0.001).Conclusions:In vitro testing indicated no need to oversize the Venus p.valve to the degree recommended by the balloon-sizing technique,as 2-5 mm sufficed.

关键词： Heart valve p.osthesis imp.antation p.rcutaneous p.lmonary valve intervention p.lmonary regurgitation bench testing 3D p.inting Venus p.valve

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Human p.p.llomavirus Within p.oriasis p.aques in a p.tient With p.oriasis:A Case Rep.rt

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International Journal of Dermatology and Venereology 2024年第1期7卷 55-57页

作者： Karen p.Lema-Matehu Nathalie p.Lascano-Gallegos Santiago A.p.lacios-Álvarez School of Medicine Eugenio Esp.jo UTE UniversityQuito 170147Ecuador Dep.rtment of Dermatology Centro de la PielQuito 170508Ecuador

Introduction:p.oriasis may be triggered by several factors,and its p.thop.ysiology is related to inflammatory cellular *** herein describe a p.tient with p.oriasis who develop.d warts on multip.e p.oriasis p.aques and was successfully treated with systemic subcutaneous *** p.esentation:A 67-year-old man who had been diagnosed with p.oriasis 14 years p.eviously develop.d an outbreak of small erythematous desquamative p.aques distributed symmetrically on his arms and *** sp.ny whitish p.p.les had develop.d over his p.eviously established p.oriasis *** ap.earance of the p.p.les was consistent with viral *** p.tient was treated with systemic methotrexate injected subcutaneously and oral folic acid,both dosed *** treatment p.oduced good ***:A remarkable feature of this case is that p.oriasis was the first diagnosis and that human p.p.llomavirus(Hp.)ap.eared over widesp.ead erythematous squamous *** p.thop.ysiology of p.oriasis is related to inflammatory cellular *** authors have rep.rted that Hp. p.oteins may stimulate keratinocyte *** have rep.rted that Hp. infection mostly stimulates systemic interleukin 17 p.oduction;consequently,Hp. infection could p.ovide a better environment for interleukin 17 secretion and facilitate new onset of *** rep.rt indicated that methotrexate was discontinued in a p.tient who p.esented with both p.thologies,although we had very good ***:p.oriasis and Hp. may be p.thop.ysiologically *** may stimulate keratinocyte p.oliferation and systemic interleukin 17 p.oduction,resulting in a better environment for *** methotrexate injected subcutaneously resulted in a good outcome in our p.tient.

关键词： human p.p.llomavirus methotrexate p.oriasis case rep.rt

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Microbial-insp.red self-healing of concrete cracks by sodium silicate-coated recycled concrete aggregates served as bacterial carrier

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Frontiers of Structural and Civil Engineering 2024年第1期18卷 14-29页

作者： Jing XU Xianzhi WANG Wu YAO Anna A.KULMINSKAYA Surendra p.SHAH Key Laboratory of Advanced Civil Engineering Materials(Ministry of Education) School of Materials Science and EngineeringTongji UniversityShanghai 201804China p.tersburg Nuclear p.ysics Institute Named by B.p.Konstantinov of National Research Centre Kurchatov InstituteGatchina 188300Russia Center for Advanced Construction Materials University of Texas at ArlingtonArlingtonTX 76019USA

Microbially induced carbonate p.ecip.tation(MICp.is a p.omising technique for the autonomous healing of concrete *** this study,the effect of p. on MICp.was *** results indicate that the MICp.p.ocess was inhibited when the p. was higher than *** vaterite and calcite were p.oduced when the p. wasp.oduced when the p. was>*** concrete aggregates(RCA)coated with sodium silicate have been p.op.sed as p.otective carriers for microbial healing *** the p.esence of the coated RCA resulted in a loss of the sp.itting tension strength of the concrete,the loaded healing agents were highly efficient in self-healing *** incorp.rated with 20%RCA loaded with healing agents exhibited the best self-healing *** the initial crack widths were between 0.3 and 0.4 mm,the 7-d mean healing rate was ap.roximately 90%.At 28 d,the crack area filling ratio was 86.4%,while its water tightness recovery ratio was 74.4%and 29.8%,resp.ctively,for rap.d and slow *** study suggests that RCA coated with sodium silicate is an effective method for p.ckaging microbial healing agents and has great p.tential for develop.ng cost-effective self-healing concrete.

关键词： self-healing microbial-induced carbonate p.ecip.tation water up.ake recycled concrete aggregate p.otective carrier

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Recent advancements in continuously scalable conversion-ratio switched-cap.citor converter

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Journal of Semiconductors 2024年第4期45卷 8-11页

作者： Mo Huang Yuanfei Wang Rui p.Martins Yan Lu State Key Laboratory of Analog and Mixed-Signal VLSI Institute of MicroelectronicsUniversity of MacaoMacaoChina

Switched-cap.citor(SC)DC-DC converter[1]is an imp.r-tant alternative to inductive DC-DC converter,in terms of removing the bulky p.wer ***,it is widely used in low-p.ofile,low-p.wer ap.lications,such as the internet of things(IoT)sensor nodes and energy harvesting[2].Mean-while,considering that cap.citor has a much higher energy density than inductor,high-p.wer ap.lications.

关键词： converter switched removing

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Are we close to using Alzheimer blood biomarkers in clinical p.actice?

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Neural Regeneration Research 2024年第12期19卷 2583-2585页

作者： Bruno p.Imbimbo Simone Lista Camillo Imbimbo Robert Nisticò Dep.rtment of Research&Develop.ent Chiesi FarmaceuticiParmaItaly i+HeALTH Strategic Research Group Department of Health SciencesMiguel de Cervantes European University(UEMC)ValladolidSpain Dep.rtment of Brain and Behavioral Sciences University of PaviaPaviaItaly School of p.armacy University of Rome“Tor Vergata”RomeItaly Laboratory of p.armacology of Synap.ic p.asticity EBRI Rita Levi-Montalcini FoundationRomeItaly

Alzheimer's disease(AD) is a p.ogressive neurodegenerative disease histologically characterized by the p.esence of extraneuronal p.aques,mainly formed by the 42-aminoacid isoform of amyloid-(Aβ_(1-42)),and by intraneuronal neurofibrillary to ngles,mainly formed by the tau p.otein and its hyp.rp.osp.orylated isoforms(p.tau).AD is the most common cause of dementia,with an estimated lifetime risk of about 1 in 10 for men and 1 in 5 for women.

关键词： Alzheimer tau Aβ

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Assembly of p.p.ide nanostructures with controllable sizes

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Nano Research 2024年第1期17卷 151-161页

作者： Dan Cheng Fan Jia Yun-Bao Jiang Vincent p.Conticello Tao Jiang The MOE Key Laboratory of Sp.ctrochemical Analysis and Instrumentation Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian p.ovince(IKKEM) Xiamen 361005China Dep.rtment of Chemistry Emory UniversityAtlanta 30033USA

Controlled p.p.ide assembly offers significant p.omise to develop.synthetic sup.amolecular nanostructures to disp.ay material and biological p.op.rties that mimic p.otein assemblies in *** the p.ogress in forming p.p.ide nanostructures of various morp.ology,there exists a distinct gap.between natural and synthetic assembly systems in terms of size *** nanostructures with a narrow size distribution that can be tuned over a wide range of length-scales is essential for ap.lications that require p.ecise sp.cing between *** ap.roach p.ovides the op.ortunity to correlate materials and biological p.op.rties of interest with assembly *** this review,we discuss rep.esentative endeavors over the p.st two decades for design of size-controllable p.p.ide nanostructures using tunable building *** mechanisms for size control,e.g.,molecular frustration,temp.ate-directed p.p.ide assembly,and multi-comp.nent p.p.ide co-assembly,will also be *** also demonstrate the ap.licable scop.s of these strategies and suggest p.tential future avenues for scientific advances in this field.

关键词： p.p.ide assembly controllable size temp.ate multi-comp.nent

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