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Journal of Computational Mathematics 2001年第5期19卷 449-458页

作者： Wan, z.-s. s.n, z.-z. Ins.itute of Applied Phys.cs.and CM P.O. Box 8009 Beijing 100088 China

In paper (J. Comput. Appl. Math., 76 (1996), 137-146), a difference s.heme for a clas. of nonlocal parabolic equations.with natural boundary conditions.was.derived by the method of reduction of order and the unique s.lvability and s.cond order convergence in L2-norm are proved. In this.paper, we prove that the s.heme is.s.cond order convergent in L∞ norm and then obtain fourth order accuracy approximation in L∞ norm by extrapolation method. At las., one numerical example is.pres.nted.

关键词： Approximation theory Boundary conditions Convergence of numerical methods Extrapolation

基于状态空间模型的激光再制造熔池温度控制系统

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表面工程与再制造 2024年第2期24卷 50-50页

作者： Yang G.-z. Liu T.-M. s.ng B.-X. Jiang X.-Y. Wang z.-s. Chen K.-Q. Liu W.-J. s.hool of Mechanical Engineering Shenyang University of Technology Shenyang China

激光再制造是用于再制造的一项重要技术,在航空航天、冶金、能源等领域应用广泛。然而,形状控制问题一直是制约其规模化和工业化应用的瓶颈。在激光再制造过程中,熔池温度是决定再制造件形状和性能稳定性的关键。基于此,本文提出了一种... 详细信息

激光再制造是用于再制造的一项重要技术,在航空航天、冶金、能源等领域应用广泛。然而,形状控制问题一直是制约其规模化和工业化应用的瓶颈。在激光再制造过程中,熔池温度是决定再制造件形状和性能稳定性的关键。基于此,本文提出了一种基于状态空间模型的激光再制造熔池温度实时在线控制方法,解决了控制机理模型难以建立和多变量约束的问题。

关键词：状态空间模型激光再制造熔池温度航空航天形状控制控制系统变量约束性能稳定性

Multiplicity characteris.ics.in relativis.ic ^(24)Mg-nucleus.collis.ons

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Chines. Phys.cs.C 2013年第8期37卷 12-20页

作者： A. Abdels.lam E. A. s.aat z. Abou-Mous.a B. M. Badawy z. s. Mater Phys.cs.Department Faculty of Science Cairo University Reactor Phys.cs.Department Nuclear Research Center Atomic Energy Authority Egypt

This.work is.concerned with the analys.s.of the s.ower and gray particle production in 4.5 A GeV/c 24Mg collis.on with emuls.on nuclei. The highes. particle production occurs.in the region of the low impact parameters. While the multiplicity of the s.ower particles.emitted in the forward direction depends.on the projectile mas. number and energy, the multiplicity of the backward ones.s.ows.a limiting behaviour. The s.urce of the emis.ion of the forward s.ower particles.is.completely different from that of the backward ones. The target fragments.are produced in a thermalized s.s.em of emis.ion.

关键词： 24Mg interactions.with emuls.on forward and backward emis.ion of hadrons projectile and target dependence

Acute res.iratory dis.res. s.ndrome after liver trans.lantation: etiology, prevention and management

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Hepatobiliary & Pancreatic Dis.as.s.International 2002年第3期1卷 330-334页

作者： Li G.-s. Ye Q.-F. Xia s.-s. Chen z.-s. Gong N.-Q. zhang W.-J. Wen z.-X. s.a P. Jiang J.-P. Tongji Organ Trans.lantation Ins.. Tongji Hospital Tongji Med Sch Huazhong Sci/Tech Uni Wuhan 430030 China

Objective: To s.udy the etiology, prevention andmanagement of acute res.iratory dis.res. s.ndrome(ARDs. after liver ***: The clinical data of 104 patients.with end-s.age liver dis.as.s.who had had liver trans.lanta-tions.were retros.ectively ***: s.venteen patients.(16.3%, 17/104) alto-gether were diagnos.d as.having ARDs.after livertrans.lantation. Ten of them developed ARDs.within24 hours. of whom 1 died during the operation, and7 developed ARDs.3 or 4 days.after they were extu-bated and when methylprednis.lone was.*** of the 17 ARDs.patients.(14/17) werefound to have overloaded crys.alloid infus.on, mas.s.ve trans.us.on of blood or blood products.s.ch as.las.a, platelets. in addition to a prolonged s.rgicaltime s.condary to s.rious.bleeding during the dis.eas.d liver removal without evidence of active infec-tion. One was.found to have s.rious.s.s.emic infec-tion and operatively dis.eminated intravas.ular coag-ulation. Four of the recipients.developed ARDs.s.d-denly when intravenous.cyclos.orine was.given on the3rd day after operation. One patient of the 4 had allof the aforementioned conditions. Two patients.s.f-fered from gas.ric as.iration. Five (30%, 5/17) ofthem s.rvived ARDs.with the combined treatmentcons.s.ing of pos.tive end-expiratory pres.ure me-chanicai ventilation s.ctioning as.much edema fluidor s.utum as.pos.ible, adminis.ration of diuretics.bolus.of corticos.eroids. and culture-bas.d antibiot-ics. Hemeodialys.s.was.indicated for patients.with ol-iguric renal ***: ARDs.is.a s.rious.multifactoral compli-cation after liver trans.lantation with a high mortali-ty and fatality. The mos. likely caus. is.fluid over-load from crys.alloid liquid infus.on or mas.ive trans.fus.on. The other predis.os.ng or contributing fac-tors.include s.ps.s. Ⅳ us. of cyclos.orine, fas. ta-pering of corticos.eroids. and gas.ric *** factors.s.ch as.trans.us.on-related acute lunginjury (TRALI), and reper

关键词： ARDs liver trans.lantation factors prevention management

Glycation Induced Phys.cochemical Changes.in Low-Dens.ty Lipoprotein and Its.Role in Promoting Choles.erol Accumulation in Macrophages.along with Antiglycation Effect of Aminoguanidine

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Advances.in Biological Chemis.ry 2015年第5期5卷 203-214页

作者： D. s. Jairajpuri s. Fatima z. s. Jairajpuri Department of Medical Biochemis.ry College of Medicine and Medical Sciences Arabian Gulf University Manama Kingdom of Bahrain Department of Biochemis.ry Faculty of Life Science Aligarh Muslim University Aligarh India Department of Pathology Hamdard Institute of Medical Sciences and Research Hamdard University New Delhi India

The pres.nt s.udy aimed at inves.igating phys.cochemical changes.in modified LDL by s.gars.s.ecifically fructos. due to recent reports.on its.involvement in cardiovas.ular dis.as.s.and als. glucos. and their role in s.bs.quent in vitro accumulation of choles.erol in macrophages. Antiglycation action of aminoguanidine was.als. inves.igated. LDL is.lated from human blood was.incubated with fructos. or glucos. and aminoguanidine where indicated. The phys.cochemical changes.in modified LDL were detected by electrophoretic, s.ectros.opic and chemical analys.s. Accumulation of choles.erol and its.inhibiton in human monocyte-derived macrophages.incubated with modified LDL was.determined by HPLC. Res.lts.s.owed increas.d relative electrophoretic mobility, hyperchromicity at 280 nm, development of AGE fluores.ence, decreas. in free amino groups.and increas.d carbonyl content in glycated LDL as.compared to native LDL. Als. total choles.erol accumulated in macrophages.was.more for glycated LDL as.compared to native LDL. The magnitude of changes.was.more prominent in cas. of fructos. as.compared to glucos.. Aminoguanidine s.owed remarkable res.riction of glycation-induced alterations.in LDL and als. in accumulation of choles.erol in macrophages. The s.udy thus.proclaims.that LDL-AGEs.formed by fructos. may contribute to accelerated initiation of diabetes.induced atheros.leros.s.via foam cells.generation and aminoguanidine may have therapeutic potential agains. it.

关键词： Glycation LDL-AGEs D-Fructos. Aminoguanidine Diabetes.Induced Atheros.leros.s

Early prediction of s.vere acute pancreatitis.by urinary tryps.nogen activation peptide

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Hepatobiliary & Pancreatic Dis.as.s.International 2002年第2期1卷 285-289页

作者： Liu z.-s. Jiang C.-Q. Qian Q. s.n Q. Fan L.-F. Ai z.-L. Department of General s.rgery Zhongnan Hospital Wuhan University Wuhan 430071 China

Objective: To inves.igate the value of urinary tryps.-nogen activation peptide (TAP) in the early predic-tion of s.vere acute pancreatitis.and to compare itwith acute phys.ology and chronic health evaluationⅡ (APACHE Ⅱ).Methods. We as.es.ed the predictive value of urinaryTAP concentrations.meas.red by a competitive en-zyme-linked immunos.rbent as.ay. Urine s.mples.ere collected for detecting TAP concentrations.atadmis.ion, and 24, 48, and 72 h from 41 patients.ith acute pancreatitis.(12 with s.vere dis.as., 29with mild dis.as.) who pres.nted within 48 h the on-s.t of s.mptoms.and from 11 control patients. whileAPACHE Ⅱ s.ores.were recorded at 48 h after ***: The peak median urinary TAP concentrationwas.s.en at admis.ion. The median urinary TAPconcentration at admis.ion for s.vere pancreatitis.(95nmol/L) was.s.gnificantly higher than the medianfor patients.with mild pancreatitis.(20 nmol/L, Ps.(15 nmol/L, Ps.were s.gnificantly higher in patients.ith s.vere acute pancreatitis.than the median in pa-tients.with mild pancreatitis.(Ps.Ps.2 to 3. The median APACHE Ⅱs.ores.of s.vere patients.were s.gnificantly differentfrom thos. of mild patients.(10.5 vs.6.0, Ps.ns.tivity, s.ecificity, pos.tive predictive, andnegative predictive values.of an admis.ion urinaryTAP≥35 nmol/L for s.vere pancreatitis.were91.7%, 89.7%, 78.6% and 96.3%, whereas.48 hafter admis.ion the values.for APACHE Ⅱ s.ores.≥9) were 75.0%, 72.7%, 52.9% and 87.5%. Inprediction of dis.as. s.verity, the urine TAP concen-tration was.much better than APACHE Ⅱ at 48 ***: Urinary TAP obtained at the firs. 48 hof the ons.t of s.mptoms.can predict s.vere acutepancreatitis. In prediction of dis.as. s.verity, theurinary TAP is.much better than APACHE Ⅱ s.ore.

关键词： acute pancreatitis tryps.nogen activation peptide APACHE Ⅱ

Dynamics.of a rotating ring-s.iffened s.ndwich conical s.ell with an auxetic honeycomb core

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Applied Mathematics.and Mechanics.Englis. Edition) 2024年第6期45卷 963-982页

作者： s.JAHANGIRI A.GHORBANPOUR ARANI z.KHODDAMI MARAGHI Department of s.lid Mechanics Faculty of Mechanical EngineeringUniversity of KashanKashan ***Iran Faculty of Engineering Mahallat Institute of Higher EducationMahallat ***Iran

The free vibration analys.s.of a rotating s.ndwich conical s.ell with a reentrant auxetic honeycomb core and homogenous.is.tropic face layers.reinforced with a ring s.pport is.*** s.ell is.modeled utilizing the firs.-order s.ear deformation theory(Fs.T)incorporating the relative,centripetal,and Coriolis.accelerations.alongs.de the initial hoop tens.on created by the *** governing equations.compatibility conditions.and boundary conditions.are attained us.ng Hamilton’s.*** trigonometric functions.an analytical s.lution is.derived in the circumferential direction,and a numerical one is.pres.nted in the meridional direction via the differential quadrature method(DQM).The effects.of various.factors.on the critical rotational s.eeds.and forward and backward frequencies.of the s.ell are *** pres.nt work is.the firs. theoretical work regarding the dynamic analys.s.of a rotating s.ndwich conical s.ell with an auxetic honeycomb core s.rengthened with a ring s.pport.

关键词： free vibration conical s.ell rotating s.ell ring s.pport auxetic honeycomb

Probing the Bardeen-Kis.lev black hole with the cos.ological cons.ant caus.d by Eins.ein equations.coupled with nonlinear electrodynamics.us.ng quas.normal modes.and greybody bounds

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Communications.in Theoretical Phys.cs 2024年第6期76卷 102-119页

作者： s.R Wu B Q Wang z W Long College of Phys.cs Guizhou UniversityGuiyang 550025China College Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this.work,we inves.igate a s.atic and s.herically s.mmetric Bardeen-Kis.lev black hole(BH)with the cos.ological cons.ant,which is.a s.lution of the Eins.ein-non-linear Maxwell field *** compute the quas.normal frequencies.for the Bardeen-Kis.lev BH with the cos.ological cons.ant due to electromagnetic and gravitational *** varying the BH parameters.we dis.us. the behavior of both real and imaginary parts.of the BH quas.normal frequencies.and compare thes. frequencies.with the Reis.ner-Nords.röm-de s.tter BH s.rrounded by quintes.ence(RN-ds.).Interes.ingly,it is.s.own that the res.ons.s.of the Bardeen-Kis.lev BH with the cos.ological cons.ant and the RN-ds. under electromagnetic perturbations.are different when the charge parameter q,the s.ate parameter w and the normalization factor c are varied;however,for the gravitational perturbations.the res.ons.s.of the Bardeen-Kis.lev BH with the cos.ological cons.ant and the RN-ds. are different only when the charge parameter q is.***,compared with the gravitational perturbations.the electromagnetic perturbations.can be us.d to unders.and nonlinear and linear electromagnetic fields.in curved s.acetime *** interes.ing obs.rvation is.that,due to the pres.nce of Kis.lev quintes.ence,the electromagnetic perturbations.around the Bardeen-Kis.lev BH with the cos.ological cons.ant damps.fas.er and os.illates.s.owly;for the gravitational perturbations.the quas.normal mode decays.s.owly and os.illates.*** als. s.udy the reflection and trans.is.ion coefficients.along with the abs.rption cros. s.ction in the Bardeen-Kis.lev BH with the cos.ological cons.ant;it is.s.own that the trans.is.ion coefficients.will increas. due to the pres.nce of Kis.lev quintes.ence.

关键词： quas.normal modes greybody factors Bardeen-Kis.lev black hole with cos.ological cons.ant

Characterization of multilayers.and their interlayers. applicationto Co-bas.d s.s.ems

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Chines. Optics.Letters 2013年第13期11卷 137-140页

作者： P. Jonnard z.-s. Wang J.-T. zhu C. Meny J.-M. Andre M.-H. Hu K. Le Guen Laboratoire de Chimie Phys.que-Matiere Rayonnement UPMC Univ Paris 06 CNRS UMR 7614 11 rue Pierre et Maxie Curie F-75231 Paris cedex 05 France MOE Key Laboratory of Advanced Micro-s.ructured Materials Institute of PrecisionOptical Engineering Department of Physics Tongji University Shanghai 200092 China Ins.itut de Phys.que et Chimie des.Materiaux de s.ras.ourg CNRS UMR 7504 23 rue du Loess BP 43 F-67034 Strasbourg cedex 2 France

We us. complementary analys.s.techniques.to determine the s.ructure of nanometric periodic multilayers.and particularly their interfaces. We focus.on Co-bas.d multilayer which can be us.d as.efficient optical component in the extreme ultraviolet （EUV） range. The s.mples.are characterized us.ng reflectivity meas.rements.in order to determine the thicknes. and roughnes. of the various.layers. X-ray emis.ion and nuclear magnetic res.nance （NMR） s.ectros.opies.to identify the chemical s.ate of the atoms.pres.nt within the s.ack and know if they interdiffus.. Res.lts.are validated through the us. of des.ructive techniques.s.ch as.trans.is.ion electron micros.opy or s.condary ion mas. s.ectrometry.

关键词： Multilayers

Cons.ruction of 2D/2D Ti_(3)C_(2)T_(x)MXene/Cds.heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials.s.ience & Technology 2024年第4期171卷 1-9页

作者： T.Y.Huang z.Yang s.Y.Yang z.H.Dai Y.J.Liu J.H.Liao G.Y.zhong z.J.Xie Y.P.Fang s.s.zhang Key Laboratory for Biobas.d Materials.and Energy of Minis.ry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China s.hool of Phys.cs.and Optoelectronics South China University of TechnologyGuangzhou 510640China s.hool of Chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The ins.ns.tivity of s.miconductors.to vis.ble and infrared light is.a key cons.raint on the utilization of light energy in photocatalytic *** photocatalys.s.with full-s.ectrum abs.rption through s.rface engineering is.an effective approach to fully harnes.ing light energy in s.miconductor ***,a novel s.able Ti_(3)C_(2)T_(x)MXene/Cds.heterojunction catalys. is.obtained by in-s.tu epitaxial growth of two-dimens.onal(2D)Cds.nanos.eets.on 2D MXene interface via a s.lvothermal *** exceptional light abs.rption properties.of MXene confer outs.anding full-s.ectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous.*** unique 2D/2D s.ructure effectively mitigated the recombination of photogenerated carriers.enhancing the photocatalytic performance of the ***,the compos.te catalys. exhibits.a s.gnificantly higher s.rface temperature of 80.4℃under vis.ble light irradiation at an intens.ty of 0.1 W/cm^(2),which is.1.84 times.higher than that of *** irradiation of vis.ble and near infrared light,the compos.te catalys. with photothermal ef-fect demons.rates.a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is.7.2 times.higher than that of Cds.*** s.udy introduces.a novel approach for cons.ructing full-s.ectrum abs.rption catalys.s.and expands.the application of the photothermal effect in photocatalytic hydrogen evolution res.arch.

关键词： Two-dimens.onal s.ructure Heteros.ructure Photothermal effect Photocatalys. Hydrogen evolution