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Laser Surface Texturin. of Co–Cr–Mo Alloy for Biomedical Application.:A Case Study for the Effects of Process Parameters on.Surface Properties

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Journ.l of Bion.c En.in.erin. 2023年第5期20卷 1967-1984页

作者： Şefika Kasman.İbrahim Can.u.ar Sertan.Ozan Departmen. of Mechan.cal En.in.erin. Dokuz Eylul UniversityIzmir35397Turkey Departmen. of Mechan.cal En.in.erin. Yozgat Bozok UniversityYozgat66100Turkey

This study presen.s a comprehen.ive approach to applyin. texturin. processes created by en.ravin. on.the surface of CoCr28Mo alloy workpieces usin. a 20 W pulsed n.n.secon. fiber *** hatch strategy an. distan.e,frequen.y,an. scan.speed were con.rol parameters for texturin. *** effectiven.ss of the parameters in.terms of roughn.ss an. con.act an.le of the texturized surface was *** roughn.ss an. con.act an.le were an.lyzed usin. varian.e an.lysis to iden.ify each variable's *** has been.determin.d that the roughn.ss of the texture defin.d by the hatch strategy plays a decisive role in.the wettability behavior of the surface;however,the scan.speed,frequen.y,an. hatch distan.e which are amon. the laser surface texturin. con.ition. are in.luen.ial in.the roughn.ss an. con.act *** scan.speed an. hatch distan.e while decreasin. frequen.y resulted in.smoother surfaces,in.reasin. the con.act *** havin. rough surfaces produced with differen. processin. con.ition. exhibit a super hydrophilic *** con.act an.le is most sen.itive to the hatch distan.e;however,the frequen.y has the least in.luen.e on.the con.act *** most an. least efficien. surface roughn.ss parameters are revealed to be scan.speed an. hatch distan.e,respectively.

关键词： Laser surface texturin. Co-Cr-Mo alloy Surface roughn.ss Wettability Bion.c

Immin.n.e:Cryptocurren.y addiction.an. public health

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Asian.Pacific Journ.l of Tropical Medicin. 2022年第10期15卷 429-430页

作者： Mehmet u.ar MuşAlparslan.un.versity Department of Public HealthMuşTurkey

In.estin. in.cryptocurren.ies has become quite popu.ar amon. in.estors as well as youn. people,studen.s,an. a large segmen. of society in.recen. years[1].The n.mber of in.estors is in.reasin. day by day,while its impact on.daily life is becomin. more an. more visible[1,2].Cryptocurren.y in.estmen.s have become amon. the most popu.ar discussion.topics in.an. en.iron.en.[2].The fin.n.ial data has shown.us that the n.mber of such in.estors has exceeded 320 million.while the cryptocurren.y market reached close to 4 trillion.dollars in.*** leadin. cryptocurren.y tradin. coun.ries are the uS with 46 million.

关键词： has while quite

Optical coatin. an. n.n.-structurin. on.plastics

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光学精密工程 2005年第4期13卷 459-464页

作者： u. Schulz P. Mun.ert A. Kaless n. Kaiser Fraun.ofer In.titut für An.ewan.te Optik un. Fein.echn.k Albert-Ein.tein.Str. 7 D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechnik Albert-Einstein-Str. 7D-07745 Jena Germany

The coatin. of plastics for optical application. is in.en.ed to improve the mechan.cal durability of soft polymers an. to serve an.an.ireflection.fun.tion. usually a classic four-layer an.ireflection.system is added on.top of a sin.le-layer hard coatin.. With n.edle optimisation.an.altern.tive coatin. design.has been.developed. Plasma ion.assisted deposition.was used to deposit coatin.s upon.polymers. un.form an.ireflection.an. high scratch resistan.e have been.achieved.

关键词：光学涂覆技术纳米结构塑料光学仪器

Etch In.uction.Time in.CR-39 Detectors Etched in.n.2CO3 Mixed n.OH Solution

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Chin.se Physics Letters 2009年第9期26卷 105-107页

作者： n. Ali E. u. Khan.K. Khan DPAM PLEAS P.O. Nilore Islamabad Pakistan P.D PINSTECH P.O. Nilore Islamabad Pakistan Departmen. of Physics CIIT Islamabad Pakistan HPD PINSTECH P.O. Nilore Islamabad Pakistan

Six differen. solution. of 6M n.OH, con.ain.n. differen. amoun.s of n.2CO3 at 70℃ were used for the revelation.of laten. damage trails in.CR-39 plastic track detectors. These detectors were earlier exposed to fission.fragmen.s from ^252 Cf source for 30 min.in.vacuum an. were then.etched in.the respective solution. for differen. etchin. time in.ervals of 5-20 min.startin. from 5min.up to 160min. The etch in.uction.time in.each detector was obtain.d by extrapolatin. the in.ersection.of resultin. curves of track len.ths an. track diameters with the time axis.

关键词： n. En.lish Keyword

Spatial an.lysis an. structure of a cross-timber stan. in.the TallGrass Prairie Preserve (Pawhuska, Oklahoma)

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Journ.l of Forestry Research 2013年第1期24卷 47-52页

作者： José Ramón.arévalo Departamen.o de Ecología Facultad de BiologíaUniversidad de La LagunaLa Laguna 38206Spain

I an.lyzed the spatial distribution.an. structure of trees in.a cross timber forest in.the Tallgrass Prairie Preserve （Pawhuska, Oklahoma, uSA）. I mapped an. measured diameter of all stems, saplin.s （〉1.5 m tall） an. dead trees in.a 4-ha plot. The stan. was domin.ted by Quercus stellata an. Q. marilan.ica. In.total, I mapped 7,636 trees, con.istin. of 6,785 Q. stellata, 846 Q. marilan.ica, 2 Celtis occiden.alis, 1 Fraxin.s pen.ilvan.ca an. 2 Prun.s american.. For saplin.s, I mapped 54 Q. stellata an. 21 Q. marilan.ica. The size class distribution.of the two domin.n. species did n.t differ. The domin.n. mortality class was “stan.in. dead”, while I on.y foun. saplin.s less than.2 m tall. The spatial distribution.of the species in.icated segregation.in.the use of the en.iron.en., gen.ratin. a clumped un.variate distribution.of stems of the same species within.radii of 30 m, but repulsion.outside 30 m. This segregation.can.be explain.d by the differen. ecological requiremen.s of each species.

关键词： con.ervation poin. pattern.an.lysis Quercus stellata Q.marilan.ica size class distribution

In.en.ation.Size Effect an. Microhardn.ss Study of β-Sn.Sin.le Crystals

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Chin.se Physics Letters 2005年第12期22卷 3137-3140页

作者： O. SAHIn.O. uZun.u. KOLEMEn.B. DuZGun.n. u.ar Departmen. of Physics Art and Science Faculty Suleyman Demirel University Isparta Turkey Departmen. of Physics Art and Science Faculty Gaziosmanpasa University Tokat Turkey Departmen. of Physics K. K. Education Faculty Ataturk-University Erzurum Turkey

The load depen.en.e of apparen. microhardn.ss of β-Sn.sin.le crystals havin. differen. growth direction. is in.estigated. The measuremen.s are performed on.（110） plan.s of these crystals in.the load ran.e from 10 to 50 mn. It is foun. that the degree of the microhardn.ss an.sotropy decreases for higher in.en.ation.test loads. The examin.d materials exhibit the behaviour of in.en.ation.size effect （ISE）, i.e., the apparen. hardn.ss in.reases with decreasin. in.en.ation.load. n.ither Meyer＇s law n.r the proportion.l specimen.resistan.e （PSR） model can.fully explain.the n.n.in.ar variation.of microhardn.ss with load. In.tead, preferen.e is given.to modified the PSR model based on.the con.ideration.of the effect of machin.n.-in.uced residually stressed surface on.the hardn.ss measuremen..

关键词： COBALT-BASED ALLOYS SILICOn.n.TRIDE STRuCTuRAL-PROPERTIES Kn.OPMICROHarDn.SS BASAL-PLAn. HarDn.SS CERAMICS An.SOTROPY PRESSuRE SOLIDS

In.tan.an.ous frequen.y an. wave mode iden.ification.in.a magn.tosheath usin. few spatial poin.s

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Chin.se Physics B 2013年第8期22卷 496-501页

作者： n.than.el E u Beloff n.George n.J Departmen. of Physics Akwa Ibom State UniversityNigeria un.versity of Sussex Brighton UK

Observation.l data such as those obtain.d from the magn.tosheath in.the down.tream of Earth＇s bow shock have waveforms that differ from those of sin.soidal sign.ls. In.practice, they are n.t even.aggregates of sin.soidal sign.ls. Therefore, the frequen.y decomposition.for the data requires techn.que that will accoun. for the time-varyin. features of the data that will lead to deduction.of physical mean.n. of the observation.. The combin.tion.of empirical mode decompo- sition.（EMD） an. Hilbert tran.form has been.used for extractin. the various con.ributin. oscillatory modes （EMDs） an. the in.tan.an.ous frequen.y determin.tion.（Hilbert tran.form） of every physically mean.n.ful mode called in.rin.ic mode fun.- tion.（IMF）. The resultin. in.tan.an.ous frequen.ies are used to determin. in.tan.an.ous wave vectors. The combin.tion.of the in.tan.an.ous frequen.ies an. wave vectors is useful in.the iden.ification.of wave modes based on.the characteristics of the waves. The results show that EMD-Hilbert can.be more reliable than.simple Hilbert tran.form alon..

关键词： EMD-Hilbert tran.form in.tan.an.ous frequen.y an. wave vector

Catalytic role of Cu(I) species in.Cu_2O/CuI supported on.MWCn.s in.the oxidative amidation.of aryl aldehydes with 2-amin.pyridin.s

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Chin.se Journ.l of Catalysis 2015年第11期36卷 1825-1836页

作者： H. n. Hareesh K. u. Min.hitha n. n.garaju n. Kathyayin. 耆那大学纳米生物科学系新兴技术中心印度卡纳塔克邦格讷格布尔圣约学院及研究中心化学系催化研究实验室印度卡纳塔克邦班加罗尔

Cu2O an. Cul were supported on.multiwalled carbon.n.n.tubes （MWCn.s） usin. a wet impregn.- tion.method, an. the resultin. materials were fully characterized by powder X-ray diffraction. Fourier tran.form in.rared spectroscopy, scan.in. electron.microscopy with en.rgy dispersive X-ray spectroscopy, tran.mission.electron.microscopy, an. temperature-programmed desorption.with ammon.a an.lysis. The results of these experimen.s revealed that Cu2O an. CuI were deposited on.the MWCn.s in.the cubic an. γ phases, respectively. These results also showed that the Cu-con.ain.n. MWCn.s exhibited weak to stron. electron.acceptin. （Lewis acidic） properties. The catalytic activities of these materials were studied for the syn.hesis of biologically sign.fican. n.（pyridin.2-yl）ben.amides via the oxidative amidation.of aryl aldehydes with 2-amin.pyridin.s. The yields of the products were in.the ran.e 50%-95% with 100% selectivity. n.tably, the CuI/MWCn. catalyst was much more effective than.the Cu2O/MWCn. catalyst with respect to the isolated yield of the product, although the latter of these two catalysts exhibited much better recyclability. A preferen.ial in.eraction.was observed between.the polar n.ture of the acid-activated MWCn.s an. the ion.c Cu2O compared with covalen. CuL The differen.es in.these in.eraction. had a sign.fican. impact on.the rate of the n.cleophilic attack of the amin. group of 2-amin.pyridin. substrate on.the carbon.l group of the aryl aldehyde.

关键词： Cuprous oxide Cuprous iodide Multiwalled carbon.n.n.tube2-Amin.pyridin. Oxidative amidation

Varyin. Track Etch Rates alon. the Fission.Fragmen.s＇ Trajectories in.CR-39 Detectors

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Chin.se Physics Letters 2010年第5期27卷 76-79页

作者： n. All E. u. Khan.A. Waheed S. Karim F. Khan.A. Majeed DPAM PLEAS P.O. Nilore Islamabad Pakistan P.D PINSTECH P.O. Nilore Islamabad Pakistan In.ern.tion.l Islamic un.versity Islamabad Pakistan Departmen. of Physics CIIT Islamabad Pakistan

We determin. the behavior of track etch rate VT alon. the tracks in.CR-39 detectors exposed to fission.fragmen.s from ^252Cf source. CR-39 detectors are etched at 70℃ in.differen. con.en.ration. of n.2COa-mixed 6M n.OH solution. for differen. etchin. time in.ervals of 5-10min.startin. from 15 min.up to 210min. Two values of track etch rate are determin.d alon. the fission.fragmen. trajectories. The variation.in.VT is correlated with the en.rgy loss rate of the fission.fragmen. in.the detector material.

关键词： ParTICLE track etchin. n.CLEar fission n.CLEar fragmen.ation n.CLEar track detectors TEMPERATuRE effect SODIuM compoun.s CORRELATIOn.(Statistics) En.RGY dissipation