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Single Step Micr.wave Assisted Synthesis and Antimicr.bial Activity of Silver. Copper.and Silver.Copper.Nanopar.icles

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Jour.al of Mater.als Science and Chemical Engineer.ng 2020年第8期8卷 13-29页

作者： Myr.a r.yes-Blas Nadja M. Maldonado-Luna Car.a M. r.ver.-Quiñones Ana L. Vega-Avila felix r. roman-velázquez Oscar.J. Per.les-Per.z Depar.ment of Chemistr. University of Puerto Rico at Mayagüez Mayaguez USA Depar.ment of Mechanical Engineer.ng University of Puerto Rico at Mayagüez Mayaguez USA Depar.ment of Chemical Engineer.ng University of Puerto Rico at Mayagüez Mayaguez USA Depar.ment of Engineer.ng Science & Mater.als University of Puerto Rico at Mayagüez Mayaguez USA

Copper.and silver.nanopar.icles wer. synthesized and char.cter.zed in two minutes at 175°C in a one-step synthesis using a modified polyol (ethylene glycol) method and a micr.wave heating pr.cess. We successfully synthesized spher.cal Silver.(Ag) and Copper.nanopar.icles (CuNP) with a cr.stallite size of less than 10 nm, as well as ir.egular.silver.copper.nanopar.icles (AgCuNP) with a cr.stallite size of less than 15 nm, as confir.ed by X-r.y Diffr.ction (Xr.) and High-r.solution Tr.nsmission Electr.n Micr.scopy (Hr.EM). The successful synthesis of AgCuNP with 1:1 molar.r.tio and constituted by 51.74% of copper.and 48.26% of silver.was cor.obor.ted using the Ener.y Disper.ive X-r.y (EDX) mapping technique. The AgNP and AgCuNP exhibited mor. stability in suspension, in compar.son to CuNP, as obser.ed by continuously monitor.ng the absor.ance with UV-Vis spectr.scopy for.12 days. Fur.her.or., the minimum inhibitor. concentr.tion (MIC) and minimum bacter.cidal concentr.tion (MBC) of AgNP, CuNP, and AgCuNP wer. deter.ined, against Gr.m-negative and Gr.m-positive bacter.a, and yeast. The obtained MIC and MBC values indicate that AgCu nanopar.icles exhibited bacter.cidal pr.per.ies gr.ater.than its constituents. On the contr.r., antifungal activity of AgCuNP against yeast was not obser.ed.

关键词： Ag Nanopar.icles Cu Nanopar.icles Micr.wave Synthesis Modified Polyol Method Antimicr.bial Pr.per.ies AgCu Nanopar.icles

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Amyloid-β-induced disr.ption of axon-initial-segment mitochondr.a localization:consequences for.TAU missor.ing in Alzheimer.s disease pathology

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Neur.l r.gener.tion r.sear.h 2025年第5期20卷 1407-1408页

作者： Daniel Adam felix Langer.cheidt Hans Zempel Institute of Human Genetics University Hospital CologneCologneGermany Center.for.Molecular.Medicine Cologne(CMMC) University of CologneCologneGermany

TAU is a neur.nal micr.tubule-associated pr.tein pr.fer.ntially located in *** a batter. of neur.degener.tive diseases ter.ed"tauopathies,"including Alzheimer.s disease (AD),TAU is missor.ed and abnor.ally phosphor.lated,leading to filamentous accumulations of hyper.hosphor.lated TAU,a pathological hallmar. and potential disease dr.ver.of AD and r.lated tauopathies (Zempel,2024).

关键词： Alzheimer tau diseases

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Micr.algae contr.bution in enhancing the cir.ular.economy dr.ve of biochemical conver.ion systems-A r.view

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Car.on r.sour.es Conver.ion 2024年第2期7卷 95-109页

作者： Kelechi E.Anyaoha felix Kr.jatz Isla Hodgkinson roman Maletz Chr.stina Dor.ack Technische Univer.ität Dr.sden Chair of Waste Management and Circular EconomyPratzschwitzer Str.1501796 PirnaGermany Institute of Natur.l Mater.als Technology RadebergGermany Biotopa gGmbH Center.for.Applied Aquacultur. and Bioeconomy RadebergGermany Depar.ment of Agr.cultur.l Engineer.ng Imo State Polytechnic OmumaNigeria

The global impact of gr.enhouse gas emissions r.quir.s concer.ed effor.s to r.duce emissions and ener.y use,and to incr.ase car.on captur. and *** the cir.ular.economy in CO_(2)sequestr.tion systems optimises r.sour.e use and r.duces the emissions bur.en thr.ughout the supply *** captur. fr.m anaer.bic digestion,composting and fer.entation(par.icular.y ethanol)pr.cesses offer. gr.at oppor.unities for.climate change *** waste/by-pr.ducts gener.ted fr.m these pr.cesses can limit the need to sour.e nutr.ents fr.m outside the system and incr.ase the potential for.cir.ular.*** integr.tion of micr.algae cultivation with each of anaer.bic digestion,composting and ethanol fer.entation pr.cesses pr.vides a new model for.climate change mitigation of biogenic CO_(2)and cir.ular.*** this model is limited by high ener.y consumption and nutr.ent demand,seasonal var.ability,oper.tional efficiency and end-user.r.quir.ments,fur.her.r.sear.h and policy suppor. will go a long way in r.alising the associated benefits,including in CO_(2)fixation,nutr.ent r.cover.,waste r.mediation and as an alter.ative sour.e of animal feed.

关键词： Cir.ular.economy Anaer.bic digestion Composting Micr.algae

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Intr.hepatic cholangiocar.inoma: Intr.ducing the pr.oper.tive pr.diction scor. based on pr.oper.tive imaging

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Hepatobiliar. & Pancr.atic Diseases Inter.ational 2021年第3期20卷 262-270页

作者： Fabian Bar.sch felix Hahn Lukas Müller.Janine Baumgar. Mar.a Hoppe-Lotichius roman Kloeckner.Hauke Lang Depar.ment of Gener.l Visceral and Transplant SurgeryUniversity Medical Center of the Johannes Gutenberg-University MainzLangenbeckst155131 MainzGermany Depar.ment of Diagnostic and Inter.entional r.diology University Medical Center of the Johannes Gutenberg-University MainzLangenbeckst155131 MainzGermany

Backgr.und: Intr.hepatic cholangiocar.inoma(ICC) still has a poor.long-ter. outcome, even after.complete r.section. We investigated differ.nt par.meter. gather.d in pr.oper.tive imaging and analyzed their.influence on r.sectability, r.cur.ence, and sur.ival. Methods: All patients who under.ent explor.tion due to ICC between Januar. 2008 and June 2018 wer. analyzed r.tr.spectively. Kaplan-Meier.model, log-r.nk test and Cox r.gr.ssion wer. used. r.sults: Out of 184 patients, 135(73.4%) under.ent cur.tive intended r.section. Median over.ll sur.ival(OS) was 22.2 months with a consecutive 1-, 3-and 5-year.OS of 73%, 29%, and 17%. Median r.cur.encefr.e sur.ival(r.S) was 9.3 months with a consecutive 1-, 3-and 5-year.r.S of 36%, 15%, and 11%. Site of tumor. par.nchymal localization, tumor.configur.tion/dissemination, and estimated tumor.volume had significant influence on r.sectability. Univar.ate analyses showed that site of tumor. tumor.configur.tion/dissemination, number.of nodules, and estimated tumor.volume had pr.dictive values for.OS and r.S. Together.with tumor.size the pr.oper.tive pr.diction(POP) scor. was cr.ated showing significance for.OS and r.S(all Pr.ate analysis, POP scor.(Hr.1.779;95% CI: 1.26 8-2.4 95;P=0.001), T stage(Hr.1.255;95% CI: 1.040-1.514;P=0.018) and N stage(Hr.1.334;95% CI: 1.081-1.645;P=0.007) wer. the independent pr.dictor. for.OS. For.r.S, POP scor.(Hr.1.733;95% CI: 1.30 0-2.311;Pr.3.036;95% CI: 1.376-6.697;P=0.006) wer. the independent pr.dictor.. Conclusions: The POP scor. showed to have a highly significant influence on OS and r.S. The scor. is easy to assess thr.ugh pr.oper.tive imaging. For.patients in the high r.sk gr.up at least staging lapar.scopy or.pr.oper.tive chemother.py should be evaluated, because they showed equal outcome compar.d to the ir.esectable gr.up.

关键词： Intr.hepatic cholangiocar.inoma Cholangiocar.inoma Liver.sur.er. Pr.oper.tive imaging Sur.ival

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In vitr. polymer.zation of the dopamine-bor.te melanin pr.cur.or.A pr.of-of-concept r.gar.ing^(10)bor.n neutr.n-captur. ther.py for.melanoma

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BIOCELL 2023年第4期47卷 919-928页

作者： JUAN C.STOCKEr. SILVINA A.r.MEr. MAr.ELO N.felix-POZZI ALFONSO BLÁzquez-CASTr. Instituto de Oncología“Angel H.r.ffo” Área InvestigaciónFacultad de MedicinaUniversidad de Buenos AiresBuenos AiresC1417DTBArgentina Centr. Integr.tivo de Biología y Química Aplicada Universidad Bernardo O’HigginsSantiago8370854Chile Depar.amento de Micr. y Nanotecnología Instituto de Nanociencias y NanotecnologíaCentro Atómico ConstituyentesComisión Nacional de Energía AtómicaBuenos AiresCP 1650Argentina Depar.amento de Biología Universidad Autónoma de MadridMadrid28049Spain

The^(10)bor.n neutr.n-captur. ther.py(BNCT)is an emer.ing antitumor.l method that shows incr.asing biomedical *** is based on the selective accumulation of the^(10)bor.n isotope within the tumor.which is then ir.adiated with low-ener.y ther.al neutr.ns,gener.ting nuclear.fission that pr.duces 7lithium,4helium,andγ*** catechol-bor.te ester. have been r.ther.over.ooked as pr.cur.or. of melanin biosynthesis,and ther.for.,a pr.of-of-concept appr.ach for.using dopamine-bor.te(DABO)as a suitable bor.n-containing candidate for.potential BNCT is pr.sented *** can spontaneously oxidize and autopolymer.ze in vitr.,giving a soluble,eumelaninlike br.wn-black poly-DABO *** melanoma cell cultur.s tr.ated with 1 mM DABO for.24 and 48 h wer. viable and showed no signs of damage or.cell *** stability and possible tr.ns-ester.fication of DABO is shor.ly *** calculations and quantitative str.ctur.-activity r.lationships(QSAr.analysis of DABO and the BNCT agent BPA indicated that they should be cell per.eant and accumulate within lysosomes and *** modeling allows visualization of both the DABO pr.cur.or.and the str.ctur. of a bor.te der.vative of the pr.posed catechol-por.hycene model for.eumelanin,showing inter.sting featur.s fr.m molecular.or.ital *** main differ.nce between DABO and other.agents,such as BPA,is that it is not a bor.nic acid nor.a bor.n *** simple catechol-bor.te ester.pr.tected fr.m oxidation and blackening)could be administr.ted to living cells and or.anisms,in which biosynthesis of bor.n-melanin in melanoma melanocytes can lead to impr.ved BNCT.

关键词： ^(10)Bor.n Bor.te ester. Catechols Dopamine Eumelanin Melanoma

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The Ger.an Ener.iewende and its r.ll-out of r.newableener.ies： An economic per.pective

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Fr.ntier. in Ener.y 2017年第2期11卷 126-134页

作者： Sebastian Kr.UZ felix MUSGENS Faculty of Mechanical Engineer.ng Electrical and Energy SystemsBrandenburg University of Technology 03046 Cottbus Germany

This paper.gives a shor. over.iew of the Ger.an Ener.iewende, i.e. the tr.nsition of a lar.e and mostly ther.al electr.city system towar.s electr.city gener.tion fr.m r.newable ener.y sour.e. It discusses both, the motivation of the tr.nsitions as futur. goals and cur.ent status. Fur.her.or., it gives an in-depth view into the changes in economic costs for.society as well as electr.city pr.ce effects, especially for.aver.ge pr.vate households and industr.al consumer.. It also discusses the benefits of the pr.motion of r.newable ener.ies in Ger.any.

关键词： electr.city system r.newable ener.y cost-benefit analysis

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Gr.und motion par.meter. of Shillong plateau: One of the most seismically active zones of nor.heaster. India

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Ear.hquake Science 2009年第3期22卷 283-291页

作者： Saur.bh Bar.ah Santanu Bar.ah Naba Kumar.Gogoi Olga Er.eleva felix Aptikaev J. r. Kayal Geoscience Division North-East Institute of Science and Technology (CSIR) National Geophysical r.sear.h Institute Institute of Physics of the Ear.h School of Oceanogr.phic Studies Jadavpur University

Str.ng gr.und motion par.meter. for.Shillong plateau of nor.heaster. India ar. examined. Empir.cal r.lations ar. obtained for.main par.meter. of gr.und motions as a function of ear.hquake magnitude, fault type, sour.e depth, velocity char.cter.zation of medium and distance. Cor.elation between gr.und motion par.meter. and char.cter.stics of seismogenic zones ar. established. A new attenuation r.lation for.peak gr.und acceler.tion is developed, which pr.dicts higher.expected PGA in the r.gion. Par.meter. of str.ng motions, par.icular.y the pr.dominant per.ods and dur.tion of vibr.tions, depend on the mor.hology of the studied ar.a. The study measur.s low estimates of logar.thmic width in Shillong plateau. The attenuation r.lation estimated for.pulse width cr.tically indicates incr.ased pulse width dependence on the logar.thmic distance which accounts for.geometr.cal spr.ading and anelastic attenuation.

关键词： Shillong plateau gr.und motion par.meter dur.tion magnitude nor.heaster. India

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Galvanically induced potentials to enable minimal tr.bochemical wear.of stainless steel lubr.cated with sodium chlor.de and ionic liquid aqueous solution

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Fr.ction 2018年第2期6卷 230-242页

作者： Tobias AMANN felix GATTI Natalie OBEr.E Andr.as KAILEr.Jür.en r.HE Fr.unhofer.Institute for.Mechanics of Mater.als IWM Institute for.Macr.molecular.Chemistr. University of Freiburg IMTEK-Depar.ment of Micr.systems Engineer.ng University of Freiburg

The effect of galvanically induced potentials on the fr.ction and wear.behavior.of a 1 r.91 stainless steel r.gar.ing to tr.bocor.osion was investigated using an oscillating ball-on-disk tr.bometer.equipped with an electr.chemical cell. The aim of this investigation is to develop a water.based lubr.cant. Ther.for. 1 molar.sodium chlor.de(NaCl) and 1% 1-ethyl-3-methylimidazolium chlor.de [C_2 mim][Cl] water.solutions wer. used. Tr.bological per.or.ance at two galvanically induced potentials was compar.d with the non-polar.zed state: cathodic potential-coupling with pur. aluminum- and anodic potential-coupling with pur. copper. Fr.ctional and electr.chemical r.sponse was r.cor.ed dur.ng the tests. In addition, wear.mor.hology and chemical composition of the steel wer. analyzed using scanning electr.n micr.scopy(SEM) and X-r.y photoelectr.n spectr.scopy(XPS), r.spectively. The galvanically induced cathodic polar.zation of the stainless steel sur.ace r.sults in electr.chemical cor.osion pr.tection and the for.ation of a tr.bolayer. Cations fr.m the electr.lyte(sodium Na^+ and 1-ethyl- 3-methylimidazolium [C_2 mim]^+) inter.ct and adher. on the sur.ace. These chemical inter.ctions lead to consider.bly r.duced wear.using 1 NaC l(86%) and 1% 1-ethyl-3-methylimidazolium chlor.de [C_2 mim][Cl](74%) compar.d to the nonpolar.zed system. In addition, mechanical and cor.osive par. of wear.was identified using this electr.chemical technique. Ther.for. this method descr.bes a pr.mising method to develop water.based lubr.cants for.technical applications.

关键词： sliding wear tr.bochemistr. potential contr.lled fr.ction and wear galvanic coupling ionic liquids tr.bolayer.for.ation

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INFLUENCE OF r.r. EAr.H DOPING ON MECHANICAL Pr.PEr.Y AND MICr.-STr.CTUr. OF CHr.MIA OXIDE FILM

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Chinese Jour.al of Mechanical Engineer.ng 2008年第3期21卷 16-19页

作者： JIN Huiming felix Adr.ana College of Mechanical Engineer.ng Yangzhou University Yangzhou 225005 China College of Mater.als Engineenng National University of Antiuquia Medellin 23715 Colombia

The isother.al oxidizing kinetics of Co-40Cr.alloy and its yttr.um ion-implanted samples ar. studied at 1 000 ℃ in air.by ther.al-gr.vity analysis （TGA）. Scanning electr.nic micr.scopy （SEM） is used to examine the Cr.O3 oxide film＇s mor.hology after.oxidation. Acoustic emission （AE） method is used in situ for.monitor.ng the cr.cking and spalling of oxide films for.ed on both samples dur.ng oxidizing and subsequent air.cooling stages. Theor.tical model is pr.posed r.lating to the film fr.ctur. pr.cess and is used for.analyzing the acoustic emission spectr.m both on time domain and on AE-event number.domain. It is found that yttr.um implantation r.mar.ably r.duces the isother.al oxidizing r.te of Co-40Cr.and impr.ves the anti-cr.cking and anti-spalling pr.per.ies of Cr.O3 oxide film. The r.asons for.the impr.vement ar. mainly that the implanted yttr.um r.duced the gr.in size of Cr.O3 oxide, incr.ased the high temper.tur. plasticity of oxide film, and r.mar.ably r.duced the number.and size of Cr.O3/Co-40Cr.inteffacial defects.

关键词： Str.ss Acoustic emission Inter.ace Yttr.um Oxidation

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A fast and accur.te model for.the cr.ation of explosion fr.gments with impr.ved fr.gment shape and dimensions

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Defence Technology（防务技术） 2022年第2期18卷 159-169页

作者： David felix Ian Colwill Paul Har.is School of Computing Engineering&MathematicsUniversity of BrightonBrightonUK Engineer.ng and Design(Alumni) University of SussexBrightonUK

Explosion models based on Finite Element Analysis(FEA)can be used to simulate how a war.ead *** their.execution times ar. *** pr.tection systems need to make ver. fast pr.dictions,befor. a fast attacking weapon hits the *** execution times ar. also needed in r.al time simulations wher. the impact of many differ.nt computer.models is being ***,FEA explosion models ar. not appr.pr.ate for.these r.al-time *** r.sear.h pr.sented in this paper.deliver. a fast simulation model based on Mott’s equation that calculates the number.and weight of fr.gments cr.ated by an *** addition,the size and shape of fr.gments,unavailable in Mott’s equation,ar. calculated using photogr.phic evidence and a distr.bution of a fr.gment’s length to its *** model also identifies the or.gin of fr.gments on the war.ead’s *** r.sults ar. ver.fied against exper.mental data and a fast execution time is achieved using uncomplicated simulation *** developed model then can be made available for.r.al-time simulation and fast computation.

关键词： Distr.bution of fr.gments Fr.gment shape r.al-time simulation Cylindr.cal explosion

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