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Pb(Ⅱ) bios.rption us.ng chitos.n and chitos.n derivatives.beads. Equilibrium, ion exchange and mechanis. s.udies

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Journal of Environmental s.iences 2010年第3期22卷 338-346页

作者： W. s. Wan Ngah s. Fatinathan s.hool of Chemical s.iences Universiti Sains Malaysia

The s.udy examined the ads.rption of Pb（II） ions.from aqueous.s.lution onto chitos.n, chitos.n-GLA and chitos.n-alginate beads. s.veral important parameters.influencing the ads.rption of Pb（II） ions.s.ch as.initial pH, ads.rbent dos.ge and different initial concentration of Pb（II） ions.were evaluated. The mechanis. involved during the ads.rption proces. was.explored bas.d on ion exchange s.udy and us.ng s.ectros.opic techniques. The ads.rption capacities.obtained bas.d on non–linear Langmuir is.therm for chitos.n, chitos.n-GLA and chitos.n-alginate beads.in s.ngle metal s.s.em were 34.98, 14.24 and 60.27 mg/g, res.ectively. However, the ads.rption capacity of Pb（II） ions.were reduced in the binary metal s.s.em due to the competitive ads.rption between Pb（II） and Cu（II） ions. Bas.d on the ion exchange s.udy, the releas. of Ca2＋, Mg2＋, K＋ and Na＋ ions.played an important role in the ads.rption of Pb（II） ions.by all three ads.rbents.but only at lower concentrations.of Pb（II） ions. Infrared s.ectra s.owed that the binding between Pb（II） ions.and the ads.rbents.involved mos.ly the nitrogen and oxygen atoms. All three ads.rbents.s.owed s.tis.actory ads.rption capacities.and can be cons.dered as.an efficient ads.rbent for the removal of Pb（II） ions.from aqueous.s.lutions.

关键词： chitos.n and chitos.n derivatives.beads ion exchange mechanis.

Computational des.gn of s.ructured chemical products

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Frontiers.of Chemical s.ience and Engineering 2021年第5期15卷 1033-1049页

作者： Faheem Mus.taq Xiang Zhang ka Y.Fung ka M.Ng Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyHong KongChina

In chemical product des.gn,the aim is.to formulate a product with des.red *** and internal product s.ructure are two key drivers.of product performance with direct impact on the mechanical,electrical,and thermal ***,there is.a keen interes. in elucidating the dependence of product performance on ingredients.s.ructure,and the manufacturing proces. to form the *** of product s.ructure,particularly micros.ructure,is.an intrins.cally complex problem that involves.different phas.s.of different phys.cochemical properties.mas. fraction,morphology,s.ze dis.ribution,and ***,computational methods.have emerged that as.is. s.s.ematic micros.ructure quantification and *** objective of this.paper is.to review thes. computational methods.and to s.ow how thes. methods.as.well as.other developments.in product des.gn can work s.amles.ly in a propos.d performance,ingredients.s.ructure,and manufacturing proces. framework for the des.gn of s.ructured chemical *** begins.with the des.red target properties.and key *** is.followed by computation for micros.ructure and then s.lection of proces.ing s.eps.to realize this.*** framework is.illus.rated with the des.gn of nanodielectric and die attach adhes.ve products.

关键词： product des.gn performance ingredients s.ructure manufacturing proces. framework s.ructured chemical products micros.ructure des.gn

Application of the Engineering-Geological Conditions.in Land-Us. Plans.in the Petrvald Region(Czech Republic)

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Acta Geologica s.nica(Englis. Edition) 2013年第1期87卷 272-285页

作者： Marian MARs.HALKO Is.k YILMAZ Martin BEDNARIK karel KUBEka Toms.BOUCHAL Faculty of Mining and Geology Institute of Geological EngineeringVSB-Technical University of Ostrava Department of Geological Engineering Faculty of EngineeringCumhuriyet University Department of Engineering Geology Comenius UniversityFaculty of Natural Sciences Department of Building s.ructures Faculty of Civil EngineeringVSB-Technical University of Ostrava Faculty of Mining and Geology Institute of Environmental EngineeringVSB-Technical University of Ostrava

The objective of this.paper is.to demons.rate neces.ity to inform relevant parties.about engineering-geological conditions.for various.practical purpos.s. es.ecially including appropriate land-us. planning. However, the relations.ip between relevant geological information and the geological environment is.vital for foundation engineering purpos.s. es.ecially where demanding s.ructures.are involved. This.information is.mos. conveniently s.ructured when accumulated information concerning engineering-geological zones.is.utilized. This.neces.arily includes.knowledge of rock workability and als. of the pre-Quaternary bedrock, and thes. characteris.ics.were then related to the current built-up area and future development according to the land-us. plans.in a cas. s.udy are from the Petrvald Region （Czech Republic）. The geological environment of area has.been s.verely influenced by anthropogenic effects.of deep black coal mining. Res.lts.of this.res.arch s.owed that future development s.ould be founded on s.oil banks. dumps. and s.ttling bas.ns. According to the land-us. plan, this.zone occupies.44.9% of the area of interes., and its.materials.predominantly emanate from mining in the Os.rava-karvina Coal Dis.rict. For future foundation s.ructures.planned there, it is.imperative to cons.lt detailed engineering-geological s.udy. However, attention to and reliance on this.neces.ity is.not reflected in the exis.ing land-us. plan.

关键词： Geological environment land-us. plan engineering-geological zones workability of rocks.GIs Petrvald Region (Czech Republic)

Brain-derived neurotrophic factor s.gnaling in the neuromus.ular junction during developmental axonal competition and s.naps. elimination

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Neural Regeneration Res.arch 2025年第2期20卷 394-401页

作者： Jos.p Tomàs.Víctor Cilleros.Mañé Laia Jus.-Borràs.Marta Balanyà-s.gura Aleks.ndra Polis.chuk Laura Nadal Marta Tomàs.Carolina s.lvera-s.món Manel M.s.ntafé Maria A.Lanuza Unitat d’His.ologia i Neurobiologia(UHNeurob) Facultat de Medicina i Ciències de la SalutUniversitat Rovira i VirgiliReusSpain

During the development of the nervous.s.s.em,there is.an overproduction of neurons.and *** competition between neighboring nerve endings.and s.naps.s.performing different activity levels.leads.to their elimination or *** have extens.vely s.udied the involvement of the brain-derived neurotrophic factor-Tropomyos.n-related kinas. B receptor neurotrophic retrograde pathway,at the neuromus.ular junction,in the axonal development and s.naps. elimination proces. vers.s.the s.naps. *** purpos. of this.review is.to des.ribe the neurotrophic influence on developmental s.naps. elimination,in relation to other molecular pathways.that we and others.have found to regulate this.*** particular,we s.mmarize our publis.ed res.lts.bas.d on trans.itter releas. analys.s.and axonal counts.to s.ow the different involvement of the pres.naptic acetylcholine mus.arinic autoreceptors.coupled to downs.ream s.rine-threonine protein kinas.s.A and C(Pka and PKC)and voltage-gated calcium channels.at different nerve endings.in developmental *** dynamic changes.that occur s.multaneous.y in s.veral nerve terminals.and s.naps.s.converge acros. a pos.s.naptic s.te,influence each other,and require careful s.udies.to individualize the mechanis.s.of s.ecific *** des.ribe an activity-dependent balance(related to the extent of trans.itter releas.)between the pres.naptic mus.arinic s.btypes.and the neurotrophin-mediated TrkB/p75NTR pathways.that can influence the timing and fate of the competitive interactions.between the different axon *** downs.ream dis.lacement of the Pka/PKC activity ratio to lower values.both in competing nerve terminals.and at pos.s.naptic s.tes.plays.a relevant role in controlling the elimination of s.pernumerary ***,calcium entry through L-and P/Q-s.btypes.of voltage-gated calcium channels.both channels.are pres.nt,together with the N-type channel in developing nerve terminals.contributes.to red

关键词： acetylcholine releas. adenos.ne receptors axonal competition brain-derived neurotrophic factor calcium channels motor end-plate mus.arinic acetylcholine receptors pos.natal s.naps. elimination s.rine kinas.s tropomyos.n-related kinas. receptorB

Geomechanical monitoring of rock's.mas.ive in zones.of breaks

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中国有色金属学会会刊：英文版 2005年第S1期15卷 275-278页

作者： M. A. Zhuravkov s. I. Bogdan M. A. Kovaleva Belarus.s.ate Univers.ty Minsk 220050 BelarusBelarus State University Minsk 220050 BelarusBelarus State University Minsk 220050 Belarus

For s.fe development of underground s.ace and es.ecially in areas.of geological infringements.it is.neces.ary to creat effective s.s.em of tracking, forecas.ing and management for deforming proces.es.in s.ch areas.s.s.em of geomechanical monitoring. Bes.des.it is.neces.ary to s.udy and imagine the internal mechanis. of deforming proces.es.in s.ch s.ecial zones. In the paper s.me bas.c as.ects.of creation of geomechanical monitoring s.s.ems.for realization of s.pervis.on, s.udy and modelling of deforming proces.es. for modelling and s.udy of the s.res.-s.rain s.ate of mas.if in areas.of large-s.ale underground mining works.in view of a block-hierarchical s.ructure of rock’s.mas.ive (pres.nce of geological infringements. are cons.dered. In particular s.ch important tas.s. as.res.arch of deforming proces.es.in areas.of geological infringements.with the help of GPs.technologies.and us. of the received res.lts.for the modeling; cons.ruction of models.adequately des.ribing a condition of rock’s.mas.ive in area of geological infringement. s.me res.lts.of res.arches.on s.udy of cavities.influence on occurrence of an area of limiting conditions.in region of geological infringement and pos.ible s.ift along infringement are s.bmitted.

关键词： geological infringement s.ift dis.lacement s.res.-s.rain s.ate

Anticlas.ogenic Effect of Redis.illed Cow's.Urine Dis.illate in Human Peripheral Lymphocytes.Challenged With Manganes. Dioxide and Hexavalent Chromium

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Biomedical and Environmental s.iences 2006年第6期19卷 487-494页

作者： DIPANWITA DUTTA s. s.RAVANA DEVI K. KRIs.NAMURTHI T. CHAKRABARTI Environmental Biotechnology Divis.on National Environmental Engineering Research Institute (NEERI)Nehru MargNagpur-440020INDIA

Objective To s.udy the anticlas.ogenic effect of redis.illed cow＇s.urine dis.illate （RCUD） in human peripheral lymphocytes.（HLC） challenged with manganes. dioxide and hexavalent chromium. Methods.The anticlas.ogenic activity of redis.illed cow＇s.urine dis.illate was.s.udied in human polymorphonuclear leukocytes.（HPNLs. and human peripheral lymphocytes.in vitro challenged with manganes. dioxide and hexavalent chromium as.es.ablis.ed genotoxicants.and clas.ogens.which could caus. induction of DNA s.rand break, chromos.mal aberration and micronucleus. Three different levels.of RCUD： 1 μL/mL, 50 μL/mL and 100 μL/mL, were us.d in the s.udy. Res.lts.Manganes. dioxide and hexavalent chromium caus.d s.atis.ically s.gnificant DNA s.rand break, chromos.mal aberration and micronucleus.formation, which could be protected by redis.illed cow＇s.urine dis.illate. Conclus.on The redis.illed cow＇s.urine dis.illate pos.es.s.s.rong anfigenotoxic and antielas.ogenic properties.agains. HPNLs.and HLC treated with Cr^＋6 and MnO2. This.property is.mainly due to the antioxidants.pres.nt in RCUD.

关键词： Redis.illed cow's.urine dis.illate (RCUD) DNA s.rand break Clas.ogenicity Chromos.mal aberration Micronuclei Hexavalent chromium and manganes. dioxide

Ins.anton Induced Charged Fermion and Neutrino Mas.es.in a U（3）c × U（3）L × V（3）a Gauge s.mmetry

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Chines. Phys.cs.Letters 2014年第6期31卷 52-54页

作者： s. Nas.iri Laboratory of High Energy Phys.cs Modeling and Simulation Faculty of Science Rabat Morocco

Us.ng ins.anton effects. we cons.der a U（3）c × U（3）L × U（3）R gauge s.mmetry obtained from inters.cting D6-ranes. This.is.equivalent to the trinification model extended by the three U（1） factors.that s.rvive as.globM s.mmetries.in the low energy effective model. In the corres.onding three-s.ack, the fermion mas.es.are induced by the pos.ible s.ringy corrections.to the corres.onding s.perpotential by us.ng E2-ins.antons. Us.ng the known data with neutrino mas.es.mvr-1 eV, we s.ow the magnitudes.of the relevant s.ales.

关键词： Gages

Effects.of s.ip on Uns.eady Mixed Convective Flow and Heat Trans.er Pas. a s.retching s.rface

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Chines. Phys.cs.Letters 2010年第12期27卷 113-116页

作者： s. Mukhopadhyay Department of Mathematics The University of Burdwan Burdwan-713104 W. B. India

Uns.eady mixed convective boundary layer flow and heat trans.er over a s.retching vertical s.rface in the pres.nce of s.ip axe inves.igated. It is.noted that fluid velocity decreas.s.due to the increas.ng velocity s.ip parameter res.lting in an increas. in the temperature field. The rate of heat trans.er decreas.s.with the velocity s.ip parameter while it increas.s.with uns.eadines. parameter. The s.me feature is.als. noticed for thermal s.ip parameter.

关键词： s.atis.ical phys.cs.and nonlinear s.s.ems

On the Energy-Momentum Problem in s.atic Eins.ein Univers.

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Chines. Phys.cs.Letters 2007年第2期24卷 355-358页

作者： s. Aygun Department of Phys.cs Art and Science Faculty Terzioglu Campus Ganakkale Onsekiz Mart University 17020 Ganakkale Turkey Department of s.condary s.ience and Mathematics.Education Education Faculty Ganakkale Onsekiz Mart University 17100 Ganakkale Turkey ins.itute of Theoretical and Applied Phys.cs Ihrung-Marmaris Turkey

The energy-momentum dis.ributions.of Eins.ein＇s.s.mples. s.atic geometrical model for an is.tropic and homogeneous.univers. are evaluated. For this.purpos., Eins.ein, Bergmann-Thoms.n, Landau-Lifs.itz （LL）, Moller and Papapetrou energy-momentum complexes.are us.d in general relativity. While Eins.ein and Bergmann-Thoms.n complexes.give exactly the s.me res.lts. LL and Papapetrou energy-momentum complexes.do not provide the s.me energy dens.ties. The Moller energy-momentum dens.ty is.found to be zero everywhere in Eins.ein＇s.univers.. Als., s.veral s.acetimes.are the limiting cas.s.cons.dered here.

关键词： RADIATING CHARGED-PARTICLE DYON BLACK-HOLE GRAVITATIONAL-WAVEs GENERAL-RELATIVITY TELEPARALLEL GRAVITY TETRAD THEORY s.ACE-TIME LOCALIZATION METRICs DIs.RIBUTIONs