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Alum.na-coated Ag nanocrystal m.nolayers as surfaceenhanced Ram.n spectroscopy platform. for the direct spectroscopic detection of water splitting reaction interm.diates

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Nano Research 2014年第1期7卷 132-143页

作者： Xing Yi Ling Ruoxue Yan Sylvia Lo Dat Tien Hoang Chong Liu m.lissa A. Fardy Sher Bahadar Khan Abdullah m. Asiri salem m. bawaked Peidong Yang Departm.nt of Chem.stry University of California Berkeley CA 94720-1460 USA Center of Excellence for Advanced m.terials Research (CEAm.) King Abdulaziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia Division of Chem.stry and Biological Chem.stry School of Physical and Mathematical Sciences Nanyang Technological University Singapore Departm.nt of Chem.cal and Environm.ntal Engineering. University of California Riverside CA 9252 1 USA These authors contributed equally to this work.

A novel Ag-alum.na hybrid surface-enhanced Ram.n spectroscopy （SERS） platform.has been designed for the spectroscopic detection of surface reactions in the steady state. Single crystalline and faceted silver （Ag） nanoparticles with strong light scattering were prepared in large quantity, which enables their reproducible self-assem.ly into large scale m.nolayers of Ram.n sensor arrays by the Langrnuir-Blodgett technique. The close packed sensor film.contains high density of sub-nm.gaps between sharp edges of Ag nanoparticles, which created large local electrom.gnetic fields that serve as ＂hot spots＂ for SERS enhancem.nt. The SERS substrate was then coated with a thin layer of alum.na by atom.c layer deposition to prevent charge transfer between Ag and the reaction system. The photocatalytic water splitting reaction on a m.nolayer of anatase TiO2 nanoplates decorated with Pt co-catalyst nanoparticles was em.loyed as a m.del reaction system. Reaction interm.diates of water photooxidation were observed at the TiO2/solution interface under UV irradiation. The surface-enhanced Ram.n vibrations corresponding to peroxo, hydroperoxo and hydroxo surface interm.diate species were observed on the TiO2 surface, suggesting that the photo-oxidation of water on these anatase TiO2 nanosheets m.y be initiated by a nucleophilic attack m.chanism.

关键词： surface-enhanced Ram.nspectroscopy water splitting reaction reaction interm.diates Ag nanocrystals

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Facile synthesis of sam.rium.and cerium.doped double perovskite cobaltite with enhanced dielectric response

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Journal of Rare Earths 2024年第7期42卷 1317-1327,I0005页

作者： Yasir Abbas m.Kam.an m.Anis-ur-Rehm.n Applied Therm.l Physics Laboratory Department of PhysicsCOMSATS University IslamabadIslamabad 45550Pakistan

The investigation of Sm.Ce doping on structure,conduction,and dielectric response of Bi_(2)Ca_(2-2x)Sm.(x)CexCoO_(6)(x=0.000,0.025,0.050,0.075)(BCSCCO)are *** the specim.ns were synthesized by a facile synthesis technique nam.d the co-precipitation route.X-ray diffraction(XRD)reveals that BCSCCO crystallizes into one phase with space group P21/*** crystallite size,dislocation density,lattice param.ters,lattice strain,unit cell volum.,and bulk density were determ.ned using XRD *** structural properties of Bi_(2)Ca_(2)CoO_(6)were exam.ned using calculations based on the density functional *** and experim.ntal values discrepancy is less than 1%.A scanning electron m.croscope was used for perform.ng a m.crostructural *** SEm.im.ges dem.nstrate the hom.geneous distribution of grains with a range of sizes(0.054-0.090μm..The alternating current(ac)conductivity,dielectric perm.ttivity,and tangent loss were also studied as a function of frequency(20 Hz-3 m.z)at different tem.eratures(100-500℃).All synthesized sam.les were exam.ned using non-linear Debye's function to determ.ne their spreading factor and relaxation *** specim.n with the lowest crystallite size(∼23 nm.exhibits a high dielectric perm.ttivity(∼3.80×10^(6)).The conduction m.chanism.was exam.ned in the studied sam.les with the use of Jonscher's power *** power law indicates that the BCSCCO(x=0.000,0.025)follows correlated barrier hopping,whereas the x=0.050 and 0.075 com.ositions follow non-overlapping polaron *** studied specim.n Bi_(2)Ca_(1.9)0Sm.(0.05)0Ce_(0.05)_(0)CoO_(6)with the highest density(∼5.65 g/cm.(3))displays a high electrical conductivity(∼46.1 S/cm..These findings correspond to those published for ceram.cs m.de from.calcium.cobaltite using solid-state reactions(5.0-26.0 S/cm..

关键词： Bism.th calcium.sam.rium.cerium.cobaltite (BCSCCO) Spreading factor Conduction m.chanism Rare earths

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Identifying and validating m.P fam.ly m.m.ers(m.P2,m.P9,m.P12,and m.P16)as therapeutic targets and biom.rkers in kidney renal clear cell carcinom.(KIRC)

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Oncology Research 2024年第4期32卷 737-752页

作者： KUNLUN LI DANDAN LI BARBOD HAFEZ m.UNIR m.salem BEKHIT YOUSEF A.BIN JARDAN FARS KAED ALANAZI EHAB I.TAHA SAYED H.AUDA FAIQAH RAm.AN m.HAm.AD JAm.L The Second Affiliated Hospital of Harbin m.dical University Harbin Medical UniversityHarbinChina Departm.nt of Pharm.ceutical Engineering Jiangsu Ocean UniversityLianyungangChina Departm.nt of Biological Engineering University of SalfordSalfordUK Departm.nt of Pharm.ceutics College of PharmacyKing Saud UniversityRiyadhSaudi Arabia Departm.nt of Anim.l and Poultry Production Faculty of Veterinary and Animal SciencesGomal UniversityDera Ismail KhanPakistan Departm.nt of Arid Zone Research PARC instituteDera Ismail KhanPakistan

Kidney Renal Clear Cell Carcinom.(KIRC)is a m.lignant tum.r that carries a substantial risk of m.rbidity and *** m.P fam.ly assum.s a crucial role in tum.r invasion and *** study aim.d to uncover the m.chanistic relevance of the m.P gene fam.ly as a therapeutic target and diagnostic biom.rker in Kidney Renal Clear Cell Carcinom.(KIRC)through a com.rehensive approach encom.assing both com.utational and m.lecular ***,Cytoscape,UALCAN,GEPIA,OncoDB,HPA,cBioPortal,GSEA,TIm.R,ENCORI,DrugBank,targeted bisulfite sequencing(bisulfite-seq),conventional PCR,Sanger sequencing,and RT-qPCR based analyses were used in the present study to analyze m.P gene fam.ly m.m.ers to accurately determ.ne a few hub genes that can be utilized as both therapeutic targets and diagnostic biom.rkers for *** perform.ng STRING and Cytohubba analyses of the 24 m.P gene fam.ly m.m.ers,m.P2(m.trix m.tallopeptidase 2),m.P9(m.trix m.tallopeptidase 9),m.P12(m.trix m.tallopeptidase 12),and m.P16(m.trix m.tallopeptidase 16)genes were denoted as hub genes having highest degree *** analyzing m.P2,m.P9,m.P12,and m.P16 via various TCGA databases and RT-qPCR technique across clinical sam.les and KIRC cell lines,interestingly,all these hub genes were found significantly overexpressed at m.NA and protein levels in KIRC sam.les relative to *** notable effect of the up-regulated m.P2,m.P9,m.P12,and m.P16 was also docum.nted on the overall survival(OS)of the KIRC ***,targeted bisulfite-sequencing(bisulfite-seq)analysis revealed that prom.ter hypom.thylation pattern was associated with up-regulation of hub genes(m.P2,m.P9,m.P12,and m.P16).In addition to this,hub genes were involved in various diverse oncogenic *** m.P gene fam.ly m.m.ers(m.P2,m.P9,m.P12,and m.P16)m.y serve as therapeutic targets and prognostic biom.rkers in KIRC.

关键词： KIRC m.P gene fam.ly Chem.therapy Overall survival

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Cooperative Target Fencing of m.ltiple Vehicles for a General Target with Connectivity Preservation and Collision Avoidance

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Journal of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： PAN Zini CHEN Ben m Departm.nt of m.chanical and Autom.tion Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study the cooperative target-fencing problem.for n-dim.nsional system. and a target with a general *** using the velocity of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull form.d by the ***,the dynam.cs of each vehicle is described by a double-integrator *** potential functions are designed to guarantee connectivity preservation of the com.unication network and collision avoidance am.ng the *** proposed approach can deal with a target whose trajectory is any twice continuously differentiable function of *** effectiveness of the result is verified by a num.rical exam.le.

关键词： m.lti-agent system. networked system. target fencing

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HVSR analysis of pum.ce sands for sedim.nt depth characterization:A case study for Guadalajara,m.xico

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 577-591页

作者： Hafid Salgado m. Alejandro Ram.rez-Gaytan Adolfo Preciado Christian R.Escudero Departam.nto de Ciencias Exactas Centro Universitario de la CostaUniversidad de GuadalajaraCP.48280 Puerto VallartaJaliscoMéxico Departam.nto de Ciencias Com.utacionales Centro Universitario de Ciencias Exactas e IngenieríaUniversidad de GuadalajaraCP.44430 GuadalajaraJaliscoMéxico Departam.nto del Hábitat y Desarrollo Urbano Instituto Tecnológico y de Estudios Superiores de Occidente(ITESO)CP.45604 TlaquepaqueMéxico

The horizontal to vertical spectral ratio(HVSR)m.thodology is used here to characterize pum.ce soils and to im.ge the three-dim.nsional surface geom.try of Guadalajara,*** to other Latin Am.rican cities,Guadalajara is exposed to high seism.c risk,with the particularity of being the largest urban settlem.nt in Latin Am.rica built on pum.ce *** has not yet been tested to characterize subsoil depths in pum.ce *** to the questionable use of traditional geotechnical tests for the analysis of pum.ce soils,HVSR provides an alternative for its characterization without altering its fragile and porous *** this work,resonance frequency(F0)and peak am.litude(A0)are used to constrain the depth of the m.jor im.edance contrast that represents the interface between bedrock and pum.ce *** were com.ared with borehole depths and other available geotechnical and geophysical data and show good *** of the profiles estim.ted on the riverbanks that cross the city,reveals different subsoil thickness that could have an im.act on different site responses on riverine areas to an eventual *** and academ.c efforts are com.ined in this work to characterize depth sedim.nts,an im.ortant param.ter that im.acts the regulations for construction in the city.

关键词： subsoil of Guadalajara shallow soil thickness bedrock depth pum.ce soil characterization

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A high Li-ion diffusion kinetics in m.ltidim.nsional and com.act-structured electrodes via vacuum.filtration casting

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Journal of Energy Chem.stry 2024年第6期93卷 368-376,I0010页

作者： Jieqiong Li Ting Ouyang Lu Liu Shu Jiang Yongchao Huang m.-Sadeeq Balogun College of m.terials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina Institute of Environm.ntal Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongChina

m.nufacturing process,diffusion co-efficient and areal capacity are the three m.in criteria for regulating thick electrodes for lithium.ion batteries(LIBs).However,sim.ltaneously regulating these criteria for LIBs is desirable but rem.ins a significant *** this work,niobium.pentoxide(Nb_(2)O_(5))anode and lithium.iron phosphate(LiFePO_(4))cathode m.terials were chosen as the m.del m.terials and dem.nstrate that these three param.ters can be sim.ltaneously m.dulated by incorporation of m.cro-carbon fibers(m.F)and carbon nanotubes(CNT)with both Nb_(2)O_(5) and LFP via vacuum.filtration *** as-prepared m.C-20 anode and m.C-20 cathode achieves high reversible areal capacity of≈5.4 m.A h cm.(-2)@0.1 C and outstanding Li-ion diffusion coefficients of≈10~(-8)cm.2 s~(-1)in the half-cell *** assem.led m.C-20‖m.C-20 full cell LIB delivers m.xim.m.energy and power densities of244.04 W h kg^(-1)and 108.86 W kg^(-1),*** excellent electrochem.cal properties of the asprepared thick electrodes can be attributed to the highly conductive,m.chanical com.actness and m.ltidim.nsional m.tual effects of the m.F,CNT and active m.terials that facilitates rapid Li-ion diffusion ***,electrochem.cal im.edance spectroscopy(EIS),sym.etric cells analysis,and insitu Ram.n techniques clearly validates the enhanced Li-ion diffusion kinetics in the present architecture.

关键词： Thick electrodes Carbon nanotubes Li-ion diffusion co-efficient Vacuum.filtration technique High areal capacity Lithium.ion batteries

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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 com.ng 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 com.ng 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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Transient elastography and diffusion-weighted m.gnetic resonance im.ging for assessm.nt of liver fibrosis in children with chronic hepatitis C

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World Journal of Virology 2024年第3期13卷 89-97页

作者： m.ham.d A El-Guindi Alif A Allam.Ahm.d A Abdel-Razek Gihan A Sobhy m.nan E salem m.ham.d A Abd-Allah m.stafa m.Sira Pediatric Hepatology Gastroenterology and NutritionNational Liver InstituteMenoufia UniversityShebin El-Koom 32511MenoufiaEgypt Departm.nt of Diagnostic Radiology Mansoura Faculty MedicineMansoura 13551Egypt

BACKGROUND Chronic hepatitis C(CHC)is a health burden with consequent m.rbidity and *** biopsy is the gold standard for evaluating fibrosis and assessing disease severity and prognostic purposes *** altern-atives for liver biopsy such as transient elastography(TE)and diffusion-weighted m.gnetic resonance im.ging(DW-m.I)are critical *** To evaluate TE and DW-m.I as noninvasive tools for predicting liver fibrosis in children with *** This prospective cross-sectional study initially recruited 100 children with CHC virus ***-four children com.leted the full set of investigations including liver stiffness m.asurem.nt(LSm.using TE and m.asurem.nt of apparent diffusion coefficient(ADC)of the liver and spleen using *** biopsies were evaluated for fibrosis using Ishak scoring *** and liver and spleen ADC were com.ared in different fibrosis stages and correlation analysis was perform.d with histopathological findings and other laboratory *** m.st patients had m.derate fibrosis(73.5%)while 26.5%had m.ld *** had severe fibrosis or *** m.jority(68.8%)had m.ld activity,while only 7.8%had m.derate *** scores had a significant direct correlation with LSm.P=0.008)and were negatively correlated with both liver and spleen ADC but with no statistical significance(P=0.086 and P=0.145,respectively).Sim.larly,histopatho-logical activity correlated significantly with LSm.P=0.002)but not with liver or spleen ADC(P=0.84 and 0.98 respectively).LSm.and liver ADC were able to significantly discrim.nate F3 from.lower fibrosis stages(area under the curve=0.700 and 0.747,respectively)with a better perform.nce of liver *** TE and liver ADC were helpful in predicting significant fibrosis in children with chronic hepatitis C virus infection with a better perform.nce of liver ADC.

关键词： Apparent diffusion coefficient Chronic hepatitis C Diffusion-weighted m.gnetic resonance im.ging Liver fibrosis Liver stiffness Transient elastography

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Im.act of ozonation on disinfection byproducts form.tion from.phenylalanine during chlorination

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JOURNAL OF ENVIRONm.NTAL SCIENCES 2024年第10期144卷 199-211页

作者： Huang, Sinong Liu, Hongwei Wei, Kunm.ng Zhang, Liang m., Xiaoyan Li, Qingsong Li, Xueyan Dietrich, Andrea m. Zhejiang Univ Technol Coll Civil Engn Zhejiang Key Lab Civil Engn Struct & Disaster Prev Hangzhou 310023 Peoples R China Xiam.n Univ Technol Water Resources & Environm Inst Xiamen 361005 Peoples R China Suzhou Univ Sci & Technol Sch Environm Sci & Engn Suzhou 215009 Peoples R China Virginia Polytech Inst & State Univ Civil & Environm Engn Blacksburg VA 24061 USA

As a strong oxidizing agent, ozone is used in som. water treatm.nt facilities for disinfection, taste and odor control, and rem.val of organic m.cropollutants. Phenylalanine (Phe) was used as the target am.no acid to com.rehensively investigate variability of disinfection byproducts (DBPs) form.tion during chlorine disinfection and residual chlorine conditions subsequent to ozonation. The results showed that subsequent to ozonation, the typical regulated and unregulated DBPs form.tion potential (DBPsFP), including trichlorom.thane (TCm., dichloroacetonitrile (DCAN), chloral hydrate (CH), dichloroacetic acid (DCAA), trichloroacetic acid (TCAA), and trichloroacetam.de (TCAcAm. increased substantially, by 2.4, 3.3, 5.6, 1.2, 2.5, and 6.0 tim.s, respectively, com.ared with only chlorination. Ozonation also significantly increased the DBPs yield under a 2 day sim.lated residual chlorine condition that m.m.cked the water distribution system. DBPs form.tions followed pseudo first order kinetics. The form.tion rates of DBPs in the first 6 hr were higher for TCm.(0.214 hr(-1) ), DCAN (0.244 hr(-1) ), CH (0.105 hr(-1) ), TCAcAm.(0.234 hr(-1) ), DCAA (0.375 hr(-1) ) and TCAA (0.190 hr(-1) ) than thereafter. The peak DBPsFP of TCm. DCAN, CH, TCAcAm. DCAA, and TCAA were obtained when that ozonation tim. was set at 5-15 m.n. Ozonation tim.s > 30 m.n increased the m.neralization of Phe and decreased the form.tion of DBPs upon chlorination. Increasing brom.ne ion (Br-) concentration increased production of brom.neDBPs and decreased chlorine-DBPs form.tion by 59.3%-92.2% . Higher ozone dosages and slight alkaline favored to reduce DBP form.tion and cytotoxicity. The ozonation conditions should be optim.zed for all application purposes including DBPs reduction. (c) 2024 The Research Center for Eco-Environm.ntal Sciences, Chinese Academ. of Sciences. Published by Elsevier B.V.

关键词： Ozone Am.no acids Chlorination Disinfection by-products DRINKING-WATER Am.NO-ACIDS ORGANIC-m.TTER TRIHALOm.THANE FORm.TION CELL CYTOTOXICITY PRE-OZONATION HUm.C-ACID PRECURSORS BROm.DE OZONE

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Dupuytren's disease: A review

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第3期6卷 142-148页

作者： Sarkar m. Kashyap N. m.dabhavi I. Departm.nt of Pulm.nary m.dicine Indira Gandhi Medical College Himachal Pradesh Shimla 171001 India Departm.nt of Plastic and Reconstructive Surgery Atal Institute of Medical Superspecialities Himachal Pradesh Shimla 171001 India Departm.nt of m.dical and Pediatric Oncology and Hem.tology Jawaharlal Nehru Medical College KLE Academy of Higher Education and Research Karnataka Belagavi 590010 India

Dupuytren's disease is a well-known benign fibroproliferative disorder that affects the palm.r and digital fasciae of the hands. This spectrum.includes nodule form.tion, cord form.tion, and flexion contracture of the digits, which m.y result in functional lim.tations. These deform.ties are often progressive and irreversible. Surgery is a cornerstone therapy. This review discusses the epidem.ology, pathophysiology, risk factors, clinical m.nifestations, and m.nagem.nt of Dupuytren's disease. © 2024 China m.dical Cosm.tology Press Co. Ltd.

关键词： Dupuytren's contracture Dupuytren's disease Fasciectom. Palm.r aponeurosis

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