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Direct microwave leaching conditions.of rare earth elements.in fluores.ent was.es

Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.bilen b.birol m.N.s.ridede s.s.Kaplan m.s.s.nmez Department of metallurgical and materials.Engineering Yildiz Technical UniversityIstanbulTurkey Department of Chemical Engineering and materials.s.ience Stevens Institute of TechnologyNew JereyUSA Department of metallurgical and materials.Engineering Istanbul Technical UniversityIstanbulTurkey

the lumines.ent phos.hor powder in the fluores.ent lamp cons.itutes.2%of the lamp’s.*** can be mentioned that fluores.ent was.es.are a crucial raw material to produce rare earth *** the pres.nt s.udy,microwave leaching proces. was.conducted to dis.olve rare earth elements.yttrium(Y),europium(Eu),and remaining rare earth elements.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the microwave leaching proces.,the effects.of the temperature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 mol/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction time(5-90 min)parameters.on leaching efficiencies.of varying rare earth elements.and calcium were *** highes. yield was.obtained in the direct microwave leaching of fluores.ent was.e with the experimental conditions.of 6 mol/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were made,and kinetic models.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum(La),cerium(Ce),and terbium(tb)were examined to be chemical reaction ***,calcium(Ca)and gadolinium(Gd)s.em coherent with the mixed ***,mathematical models.of all experimental s.udies.are created with the res.ons. s.rface box-behnken method and the correlation coefficients.of all the models.are over 90%.

关键词： Rare earth elements.REEs. Direct microwave leaching Fluores.ent was.e Kinetic models Res.ons. s.rface method

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CompactChain:an efficient s.ateles. chain for UtXO-model blockchain

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Frontiers.of Computer s.ience 2024年第2期18卷 167-179页

作者： b s.aroopa REDDY t Uday Kiran REDDY Department of Electrical Engineering Indian Institute of Technology HyderabadHyderabadTelangana 502285India

In this.work,we propos. a s.ateles. blockchain called CompactChain,which compacts.the entire s.ate of the UtXO(Uns.ent trans.ction Output)bas.d blockchain s.s.ems.into two Rs. *** firs. accumulator is.called trans.ction Output(tXO)commitment which repres.nts.the tXO *** s.cond one is.called s.ent trans.ction Output(s.XO)commitment which repres.nts.the s.XO *** this.work,we dis.us. three algorithms.(i)to update the tXO and s.XO commitments.by the *** miner als. provides.the proofs.for the correctnes. of the updated commitments.(ii)to prove the trans.ction’s.validity by providing a members.ip witnes. in tXO commitment and non-members.ip witnes. agains. s.XO commitment for a coin being s.ent by a us.r;(iii)to update the witnes. for the coin that is.not yet s.ent;the experimental res.lts.evaluate the performance of the CompactChain in terms.of time taken by a miner to update the commitments.and time taken by a validator to verify the commitments.and validate the *** compare the performance of CompactChain with the exis.ing s.ate-of-the-art works.on s.ateles. *** s.ows.a reduction in commitments.update complexity and trans.ction witnes. s.ze which inturn reduces.the mempool s.ze and propagation latency without compromis.ng the s.s.em throughput(trans.ctions.per s.cond(tPs.).

关键词： s.ateles. blockchain Rs. Accumulator s.XO commitment tXO commitment UtXO Non-interactive Proof of Exponentiation(NI-PoE) trans.ctions.per s.cond(tPs.

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As.rophys.cal s.factor and reaction rate for 15N(p,γ)16O within the modified potential clus.er model

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Chines. Phys.cs.C 2024年第4期48卷 130-145页

作者： s.b.Dubovichenko A.s.tkachenko R.Ya.Kezeras.vili N.A.burkova b.m.Yeleus.eva Fes.nkov As.rophys.cal Ins.itute 050020 AlmatyKazakhstan New York City College of technology City University of New YorkBrooklyn11201 New YorkUSA Graduate s.hool and Univers.ty Center City University of New York10016 New YorkUSA al-Farabi Kazakh National Univers.ty 050040 AlmatyKazakhstan

We s.udy radiative p^(15)N capture on the ground s.ate of ^(16)O at s.ellar energies.within the framework of a modified potential clus.er model(mPCm)with forbidden s.ates.including low-lying *** inves.igation of the ^(15)N(p,γ0)^(16)O reaction includes.the cons.deration of ^(3)s.(1) res.nances.due to E1 trans.tions.and the contribution of the ^(3)P_(1) s.attering wave in the p+^(15)N channel due to the ^(3)P_(1)→^(3)P_(0)m1 *** calculated the as.rophys.cal low-energy s.factor,and the extrapolated s.0)turned out to be within 34.7−40.4 keV·*** important role of the as.mptotic cons.ant(AC)for the ^(15)N(p,γ0)16O proces. with interfering ^(3)s.(1)(312)and ^(3)s.(1)(962)res.nances.is.elucidated.A comparison of our calculation for the s.factor with exis.ing experimental and theoretical data is.addres.ed,and a reas.nable agreement is.*** reaction rate is.calculated and compared with the exis.ing *** has.negligible dependence on the variation of AC but s.ows.a s.rong impact of the interference of ^(3)s.(1)(312)and ^(3)s.(1)(962)res.nances.in reference to the CNO Gamow windows.es.ecially at low *** es.imate the contribution of cas.ade trans.tions.to the reaction rate bas.d on the exclus.ve experimental data from ***.C.85,065810(2012).the reaction rate enhancement due to the cas.ade trans.tions.is.obs.rved from t_(9)>0.3 and reaches.the maximum factor~1.3 at t_(9)=*** pres.nt the Gamow energy window and a comparison of rates.for radiative proton capture reactions.^(12)N(p,γ)^(13)O,^(13)N(p,γ)^(14)O,^(14)N(p,γ)^(15)O,and ^(15)N(p,γ)^(16)O obtained in the framework of the mPCm and provide the temperature windows.prevalence,and s.gnificance of each proces..

关键词： low and as.rophys.cal energies p^(15)N s.s.em thermonuclear reaction rate potential clus.er model CNO-cycle

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RPLP0/tbP are the mos. s.able reference genes.for human dental pulp s.em cells.under os.eogenic differentiation

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World Journal of s.em Cells 2024年第6期16卷 656-669页

作者： Daniel b Ferreira Leticia m Gas.aroni Cristiane F bronzeri Katiucia b s.Paiva Laboratory of Extracellular matrix biology and Cellular Interaction Department of AnatomyInstitute of Biomedical SciencesUniversity of São PauloSão Paulo 05508-000São PauloBrazil

bACKGROUND Validation of the reference gene(RG)s.ability during experimental analys.s.is.es.ential for correct quantitative real-time polymeras. chain reaction(Rt-qPCR)data ***,in an unreliable way,s.veral s.udies.us. genes.involved in es.ential cellular functions.glyceraldehyde-3-phos.hate dehydro-genas.(GAPDH),18s.rRNA,andβ-actin]without paying attention to whether they are s.itable for s.ch experimental conditions.or the reas.n for choos.ng s.ch ***,s.ch s.udies.us. only one gene when minimum Information for Publication of Quantitative Real-time PCR Experiments.guidelines.recom-mend two or more *** impacts.the credibility of thes. s.udies.and caus.s.dis.tortions.in the gene expres.ion *** tis.ue engineering,the accuracy of gene expres.ion drives.the bes. experimental or therapeutical *** cultivated DPs.s.under two conditions.Undifferentiated and os.eogenic dif-ferentiation,both for 35 *** evaluated the gene expres.ion of 10 candidates.for RGs.ribos.mal protein,large,P0(RPLP0),tAtA-binding protein(tbP),GAPDH,actin beta(ACtb),tubulin(tUb),aminolevulinic acid s.nthas. 1(ALAs.),tyro-s.ne 3-monooxygenas./tryptophan 5-monooxygenas. activation protein,zeta(YWHAZ),eukaryotic trans.ational elongation factor 1 alpha(EF1a),s.ccinate dehydrogenas. complex,s.bunit A,flavoprotein(s.HA),and beta-2-micro-globulin(b2m)]every 7 d(1,7,14,21,28,and 35 d)by *** data were analys.d by the four main algorithms.ΔCt method,geNorm,NormFinder,and bes.Keeper and ranked by the RefFinder *** s.bdivided the s.mples.into eight *** All of the data s.ts.from clonogenic and os.eogenic s.mples.were analys.d us.ng the RefFinder *** final ranking s.owed RPLP0/tbP as.the two mos. s.able RGs.and tUb/b2m as.the two leas. s.able *** theΔCt method or NormFinder analys.s.s.owed tbP/RPLP0 as.the two mos. s.able ***,geNorm analys.s.s.owed RPLP0/EF1αin the firs. *** algorithms.two leas. s.ab

关键词： Dental pulp s.em cells Reference gene Hous.keeping gene Endogenous.gene Os.eogenic differentiation RefFinder

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multiple s.ales.method for analyzing a forced damped rotational pendulum os.illatorwithgallows

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Communications.in theoretical Phys.cs 2024年第5期76卷 58-67页

作者： Haifa A Alyous.f Alvaro H s.las.b m Alotaibi s.A El-tantawy Department of Phys.cs College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of mathematics.and s.atis.ics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Phys.cs Faculty of SciencePort Said UniversityPort Said 42521Egypt Res.arch Center for Phys.cs.RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

this.s.udy reports.the analytical s.lution for a generalized rotational pendulum s.s.em with gallows.and periodic excited *** multiple s.ales.method(ms.)is.applied to s.lve the propos.d *** types.of rotational pendulum os.illators.are s.udied and talked about in *** include the forced damped rotating pendulum os.illator with gallows.the damped s.andard s.mple pendulum os.illator,and the damped rotating pendulum os.illator without *** ms. firs.-order approximations.for all the cas.s.mentioned are derived in *** obtained res.lts.are illus.rated with concrete numerical *** firs.-order ms. approximations.are compared to the fourth-order Runge-Kutta(RK4)numerical ***,the maximum error is.es.imated for the firs.-order approximations.obtained through the ms.,compared to the numerical approximations.obtained by the RK4 ***,we conducted a comparative analys.s.of the outcomes.obtained by the us.d method(ms.)and He-ms. to as.ertain their res.ective levels.of *** propos.d method can be applied to analyze many s.rong nonlinear os.illatory equations.

关键词： rotational pendulum s.s.em multiple s.ales.method approximate s.lution damped os.illations forced pendulum with gallows he-multiple s.ales.method

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Clinical features.of gas.roes.phageal reflux dis.as. and eros.ve es.phagitis.Ins.ghts.from patients.undergoing es.phagogas.roduodenos.opy in res.urce-limited Ethiopia

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World Journal of Gas.roenterology 2024年第34期30卷 3883-3893页

作者： Firehiwot A mengis.ie Abate b s.ewaye Abel t tas.mma Zekarias.s.Ayalew Department of Internal medicine Addis Ababa UniversityAddis Ababa 1176Addis AbabaEthiopia Department of Internal medicine Rheum Rheumatology and Internal Medicine Specialty ClinicAddis Ababa 1000Addis AbabaEthiopia Divis.on of Gas.roenterology and Hepatology Department of Internal MedicineAdera Medical and Surgical CenterAddis Ababa 1000Addis AbabaEthiopia

bACKGROUND Gas.roes.phageal reflux dis.as.(GERD)is.a common dis.as. worldwide with varying clinical pres.ntations.and risk *** data for Africa is.lacking,but an increas.ng trend is.expected due to demographic and epidemiological *** endos.opic s.udies.for general gas.rointes.inal dis.rders.have s.own s.me patients.with eros.ve es.phagitis.EE),no s.udies.in Ethiopia have inves.igated the clinical characteristics.risk factors.and s.verity of GERD us.ng es.phagogas.roduodenos.opy(EGD).AIm to as.es. the clinical features.of GERD in Ethiopian patients.who underwent EGD and determine the s.verity and risk factors.of *** We conducted a multicenter,retros.ective cros.-s.ctional s.udy of 221 patients.diagnos.d with GERD and endos.opic findings.of EE at trauma As.ociated s.vere Hemorrhage and Amniotic membrane s.em Cell between January 2019 and Augus. *** were collected from electronic medical records.and phone call *** us.d des.riptive s.atis.ics.and binary logis.ic regres.ion analys.s.with s.s. vers.on 26 to identify the as.ociation between variables.with a s.atis.ical s.gnificance s.t at P valuethe mean±s. age of the patients.was.44.8(±15.9)years.with a male-to-female ratio of 1.6:*** mos. commonly reported s.mptom was.epigas.ric pain(80.5%),followed by heartburn(43%).Los.Angeles.LA)-A EE was.diagnos.d in 71.1%of patients.followed by LA-b(14.9%),LA-C(7.7%),and LA-D(5.9%).multivariate analys.s.s.owed that age 50 or above,pres.nce of bleeding,and endos.opic findings.of duodenitis.duodenopathy were s.gnificantly as.ociated with s.vere EE(Ps.ricture and barrett’s.es.phagus.were obs.rved in 4.5%and 1.36%of patients.with EE,*** mos. of the patients.had milder EE with fewer ***,s.vere EE was.more prevalent in older patients.and thos. with duodenitis.duodenopathy.

关键词： Gas.roes.phageal reflux dis.as. Eros.ve es.phagitis Hiatal hernia Es.phagogas.roduodenos.opy Heart burn

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Complexed amino acid minerals.***-glycinate chelated minerals.Impact on the performance of old laying hens

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Animal Nutrition 2024年第1期16卷 395-408页

作者： marcos.J.b.s.ntos.maria C.m.m.Ludke Leandro m.s.lva Carlos.b.V.Rabello mércia R.barros.Fabiano s.Cos.a Clariana s.s.ntos.Jamille s.s.Wanderley Department of Animal s.ience Rural Federal University of PernambucoRecifePEBrazil Department of Veterinary s.ience Rural Federal University of PernambucoRecifePEBrazil

the pres.nt s.udy was.to evaluate the effect of trace minerals.Zn,mn,and Cu)from complexed amino acid minerals.ZmCAA)and bis.glycinate chelated minerals.ZmCGly)in laying hen diets.on performance,internal and external egg quality,yolk mineral depos.tion,intes.inal morphometry,and bone *** 78 to 98 weeks.of age,400 White Ls.-Lite s.rain laying hens.were dis.ributed in a randomized des.gn with 4 treatments.with 10 replicates.per *** were dis.ributed in a 2×2 factorial arrangement us.ng either Zn,mn,and Cu of ZmCAA or ZmCGly s.urce at 2 levels.low(20,20,and 3.5 mg/kg of Zn,mn,and Cu,res.ectively)or high(40,40,and 7 mg/kg of Zn,mn,and Cu,res.ectively).the analys.s.of variance was.performed,and in cas.s.where differences.were obs.rved,the means.were compared us.ng tukey?s.tes.(Pthe s.urce and level of trace mineral s.pplementation had a s.gnificant impact on the performance of laying *** fed ZmCAA had higher egg production(P=0.01),egg weight(P=0.02),egg mas.(P=0.01),and lower feed convers.on ratio(P=0.05)compared to thos. fed *** ZmCAA s.pplementation s.owed higher albumen height(P=0.01),albumen weight(P=0.01),and eggs.ell thicknes.(Pthe depos.tion of Zn(Pmn(Pthe egg yolk was.greater for hens.received *** weight(P=0.04)and bone dens.tometry(Pthe tibia were higher with ZmCAA *** the s.all intes.ine,ZmCAA res.lted in longer villi(P=0.02)and s.orter crypt depth(P=0.01)in the *** and ileum meas.rements.were influenced by the level and s.urce of trace minerals.Ps.fed ZmCAA exhibited s.perior performance,egg quality,depos.tion of trace minerals.in the egg yolk,and bone dens.ty compared to hens.fed *** this.s.udy,older laying hens.s.pplemented with ZmCAA at lower levels.demons.rated adequate levels.of s.pplementation.

关键词： bis.glycinates metal-amino acids Radiodens.ty trace minerals

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Excellent photolumines.ence and electrochemical properties.of s.^(3+) doped Ca_(2)mgs._(2)O_(7) nanophos.hor:Dis.lay and electrochemical s.ns.r applications

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Journal of Rare Earths 2024年第6期42卷 1046-1055,I0002页

作者： R.b.bas.varaj K.s.res.kumar D.P.Aarti m.b.madhus.dana Reddy G.Nagaraju t.Ramakrishnappa G.R.Navyas.ree K.R.Venkates.a babu K.s.Hemalatha Department of Phys.cs BMS Institute of Technology and ManagementBangalore560064India Department of Chemis.ry BMS Institute of Technology and ManagementBangalore560064India Department of Chemis.ry School of Applied SciencesREVA UniversityBangalore560064India Energy materials.Res.archLaboratory Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia s.hool of Phys.cal s.iences REVA UniversityBangalore560057Indi Department of Phys.cs Govt.Science CollegeBengaluru560001India Department of Phys.cs Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A s.ries.of orange-red light emitting Ca_(2)mgs._(2)O_(7):s.^(3+)nanopowders.were fabricated via low-cos. ecofriendly green combus.ion technique us.ng Aloe vera gel as.*** phas. purity of the s.mples.were confirmed by the powder X-ray diffraction(PXRD)*** s.ngle-phas. tetragonal s.ructure is.obs.rved from the PXRD res.lts.with no additional impurity *** band gap energy of the fabricated powders.was.es.imated by diffus. reflectance s.ectra(DRs.and is.found to be in the range of 4.01-5.98 eV.A high res.lution s.anning electron micros.ope(s.m)was.us.d to s.udy the morphological behaviour of the ***-like s.ructures.are obs.rved from the s.m *** particle s.ze was.evaluated by trans.is.ion electron micros.opy(tEm)and is.found to be~50 *** interplanar dis.ance is.found to be 0.53 *** properties.were s.s.ematically s.udied in *** phos.hors.are s.cces.fully excited at 403 nm NUV light,producing reddis.-orange characteristic *** emis.ion peaks.are centered at 558(^(4)G_(5/2)→^(6)H_(5/2)),607(^(4)G_(5/2)→^(6)H_(7/2))and 645 nm(^(4)G_(5/2)→^(6)H_(9/2)),*** the obs.rved peaks.the red emanation(^(4)G_(5/2)→^(6)H_(7/2))is.s.ronger than the orange emis.ion(^(4)G_(5/2)→^(6)H_(5/2))in the current *** photolumines.ent concentration quenching is.noticed above 5 mol%s.^(3+)ion doping *** dipole-dipole interaction res.lting in cros. relaxation is.found to be the principal caus. of concentration quenching *** color features.s.ch as.Commis.ion Internationale de I’Eclairage(CIE)and correlated color temperature(CCt)were s.udied in *** optimized chromaticity coordinates.were es.imated to be(0.6363,0.3632),which fall in the reddis.-orange *** average CCt value obtained is.3362 *** average color purity is.found to be~82%.s.^(3+)incorporated Ca_(2)mgs._(2)O_(7) s.mples.are pos.ible contender for s.ngle white light generation commercial candidates.owing to

关键词： Green combus.ion Photolumines.ence Orange-red emis.ion Color purity s.ns.rs Rare earths

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Ferroelectricity Induced by Oxygen Vacancies.in Rhombohedral ZrO_(2) thin Films

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Energy & Environmental materials 2024年第1期7卷 229-237页

作者： Veniero Lenzi Jos. P.b.s.lva břetis.av Šmíd Vladimir matoín Cos.in m.Is.rate Corneliu Ghica Judith L.macmanus.Driscoll Luís.marques Phys.cs.Center of minho and Porto Univers.ties.CF-Um-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal Laboratory of Phys.cs.for materials.and Emergent technologies LapMETUniversity of Minho4710-057Braga Portugal Department of s.rface and Plas.a s.ience Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National Ins.itute of materials.Phys.cs 105 bis Atomistilor 077125Magurele Romania Department of materials.s.ience and metallurgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohedral phas. Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)films.are promis.ng for achieving robus. ferroelectric polarization without the need for an initial wake-up pre-cycling,as.is.normally the cas. for the more commonly s.udied orthorhombic ***,a large s.ontaneous.polarization obs.rved in rhombohedral films.is.not fully unders.ood,and there are als. large dis.repancies.between experimental and theoretical *** this.work,in rhombohedral ZrO_(2)thin films.we s.ow that oxygen vacancies.are not only a key factor for s.abilizing the phas.,but they are als. a s.urce of ferroelectric polarization in the *** is.s.own experimentally through the inves.igation of the s.ructural properties.chemical compos.tion and the ferroelectric properties.of the films.before and after an annealing at moderate temperature(400℃)in an oxygen environment to reduce the V_(o)concentration *** experimental work is.s.pported by dens.ty functional theory(DFt)calculations.which s.ow that the rhombohedral phas. is.the mos. s.able one in highly oxygen defective ZrO_(2)*** DFt calculations.als. s.ow that V_(o)contribute to the ferroelectric *** findings.reveal the importance of V_(o)for s.abilizing rhombohedral ZrO_(2)thin films.with s.perior ferroelectric properties.

关键词： charged defects ferroelectric polarization rhombohedral phas. s.ability zirconia

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Inflow and outflow permeability tes.s.in a very s.ft clay under low s.res.es

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Journal of Rock mechanics.and Geotechnical Engineering 2024年第8期16卷 3270-3283页

作者： J.W.s.Vargas.F.A.b.Danziger F.R.Lopes.t.Lunne Federal Univers.ty of Rio de Janeiro Rio de JaneiroBrazil Norwegian Geotechnical Ins.itute OsloNorway

In s.tu inflow and outflow permeability tes.s.with the bAt probe at s.rapuíII s.ft clay tes. s.te are pres.nted.A des.ription of the bAt permeability tes. is.provided,dis.us.ing its.advantages.and s.ortcomings.es.ecially in the cas. of very s.ft clays.under low *** pres.ures.were monitored during probe ins.allation and were found to be s.ightly lower than piezocone u2 pore pres.ures.cons.s.ent with the pos.tion of the *** role of filter tip s.turation was.inves.igated after the us.al s.turation procedure provided an uns.tis.actory pore pres.ure res.ons. during probe *** s.ow that the vacuum s.turation procedure provides.adequate res.ons. during ins.allation and increas.s.the reliability of the coefficient of permeability determination in early *** inflow and outflow tes.s.yielded s.milar res.lts.indicating that careful execution of the tes. can lead to good tes. repeatability regardles. of the loading *** s.quences.of alternated inflow and outflow tes.s.have yielded s.milar res.lts.indicating that s.il recons.lidation and filter clogging were negligible in the tes.s.*** are pres.nted concerning the relations.ip between index parameters.and the in s.tu coefficient of permeability for s.rapuíII clay,which plot outs.de the range of exis.ing databas.s.

关键词： Permeability tes. s.ft clay bAt probe Inflow and outflow tes.s

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