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p.tativ. metabolic roles of the mitochondria in asexual blood stages and gametocytes of p.asmodium falcip.rum

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Asian p.cific Journal of Trop.cal Medicine 2008年第1期1卷 31-49页

作者： Krungkrai J Kanchanap.um p.p.ngsabut S Krungkrai sr Dep.rtment of Biochemistry Faculty of MedicineChulalongkorn UniversityRama 4 RoadBangkok 10330Thailand Unit of Biochemistry Department of Medical ScienceFaculty of ScienceRangsit UniversityPaholyothin RoadPatumthani 12000Thailand

Up.n infection into human red cell,p.asmodium falcip.rum differentiates into asexual and sexual(gametocyte) *** mitochondrion is a tubular-cristate organelle,functionally and structurally different between the two *** and p.oteins inv.lv.ng metabolic and functional roles,p.otein targeting and imp.rt to this organelle, are comp.ehensiv.ly *** genes and p.oteins of the electron transp.rt system are identified, p.rtially characterized in human and rodent malaria p.rasites consisting of a single subunit of NADH dehydrogenase, two subunits of succinate dehydrogenase,cytochrome C reductase and cytochrome *** of the p.imary functional roles of the mitochondrion in the p.rasite is the coordination of p.rimidine biosynthesis, the electron transp.rt system and oxygen utilization through dihydroorotate *** enzymes of tricarboxylic acid cycle,p.ruv.te dehydrogenase comp.ex and some enzymes of ATp.synthase,are identified and p.rtially characterized using the comp.eted *** *** metabolic and functional roles of the organelle include oxidativ. p.osp.orylation,ubiquinone and heme biosynthesis,antioxidant defense and redox *** p.ysiological studies inv.lv. membrane p.tential maintenance,cellular signaling and cation *** organelle is a target for antimalarial drug,*** on the lines of ev.dence, we hyp.thesize that the p.rasite exhibits metabolic adap.ation of the underdev.lop.d mitochondrial organelle to life in the mosquito v.ctor and the human host.

关键词： malaria mitochondrion metabolism electron transp.rt system oxygen utilization p.rimidine biosynthesis tricarboxylic acid cycle heme biosynthesis ubiquinone biosynthesis p.otein synthesis antimalarial drug target

AC Conductiv.ty and Dielectric Relaxation Behav.or of Sol-gel Ba_xsr_(1-x)TiO_3 Thin Films

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Journal of Materials Science & Technology 2011年第9期27卷 802-808页

作者： Ala eddin A. Saif p. p.op.lan Microfabrication Cleanroom School of Microelectronic Engineering University Malaysia Perlis (UniMAP)

Baxsr1-xTiO3 sol-gel thin films with x--0.5, 0.7 and 0.8 hav. been fabricated as AI/BST/p. cap.citor. The AC conductiv.ty and dielectric p.op.rties ov.r a frequency rang of 10 Hz and I MHz hav. been studied in order to exp.ore the ion dynamics and relaxation mechanisms in the films. The frequency dep.ndent conductiv.ty p.ots show three regions of conduction p.ocesses. Dielectric results show that ε＇ at low frequencies increases as sr content decreases, whereas at high frequencies, it shows op.osite v.riation, which is attributed to the dip.le dynamics. The electric modulus p.ots rev.al the relaxation p.aks which are not observ.d in the ε＂ p.ots and the contribution of the grains, grain boundaries and electrode to the relaxation mechanisms.

关键词： Barium strontium titanate (BST) thin film AC conductiv.ty Dielectric relaxation Electric modulus

Imp.ct of lanthanum on the modification of HfO_2 films structure

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Journal of Rare Earths 2015年第8期33卷 857-862页

作者： T.p.Smirnov. L.v.Yakov.ina v.O.Borisov Nikolaev.Institute of Inorganic Chemistry SB RAS

LaxHf1-xOy thin films with v.rious concentrations of La, homogeneous and nonhomogeneous distributions of elements throughout the films thickness was p.rp.sefully grown by Cv.. The comp.sition of the films and their chemical structures were characterized throughout the films thickness by X-ray p.otoelectron sp.ctroscop. （Xp.） and energy-disp.rsiv. X-ray sp.ctrometry （EDXA）. A full p.cture of the film crystallinity was p.ov.ded by the combination of grazing incidence X-ray diffraction （GIXRD） synchrotron radiation （sr） and high resolution transmission electron microscop. （HR TEM）. It was shown that La acted as ＂molar v.lume modulator＂ and stabilized the nonequilibrium at T≤1300 ℃ cubic p.ases. The samp.es with La content in range of 7 at.%〈CLa〈22 at.% were materials with fluorite-typ. （Fm-3m） structure. The p.roehlore p.ase formation was observ.d at -18 at.% La content. The correlation between the La-dop.d content and the films microstructure was rev.aled.

关键词： Hf1-xLaxOy films solid solutions X-ray diffraction microstructure rare earths

Effect of Thickness of SnO_2:F ov.r Layer on Certain p.ysical p.op.rties of ZnO:Al Thin Films for Op.o-electronic Ap.lications

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Journal of Materials Science & Technology 2012年第11期28卷 999-1003页

作者： p. Rav.kumar K. Rav.chandran B. Sakthiv.l p.G and Research Dep.rtment of p.ysics AVVM Sri Pushpam College (Autonomous)

Bilayered FTO/AZO （fluorine dop.d tin oxide/aluminium dop.d zinc oxide） films were fabricated using a simp.e, cost effectiv. sp.ay p.rolysis technique. X-ray diffraction （XRD） p.ofiles of bilayered films showed that in the case of lower thickness FTO ov.r layers, （002） p.ane of ZnO p.ase had the highest intensity, whereas the p.edominance was changed in fav.ur of （200） p.ane of SnO2 p.ase for higher thickness FTO ov.r layer. Uv.studies showed that bilayered FTO/AZO films exhibited a sharp.absorp.ion edge as that of AZO film. The decrease in the p.otoluminescence （p.） p.ak at 420 nm with increasing FTO ov.r layer thickness indicated a reduction in the zinc v.cancies which caused a reduction in the sheet resistance （Rsh）. Electrical studies rev.aled that, ev.nthough the Rsh v.lue （916Ω/□） of bilayered FTO （313 nm）/AZO （314 nm） film was found to be higher than that of FTO single layer film （72Ω/□）, it was much lower than that of AZO single layer film （5661Ω/□））. The atomic force microscop. （AFM） images reflect the characteristic features of both zinc oxide and tin oxide films.

关键词： ZnO thin films Sn02 Semiconductor materials Op.ical p.op.rties Electricalp.op.rties Atomic force microscop. (AFM)

Systematic study on heav.-p.rticle radioactiv.ty of sup.rheav. nuclei ^(297–300)119

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Nuclear Science and Techniques 2024年第11期35卷 108-123页

作者： Megha Chandran v.K.Anjali K.p.Santhosh Dep.rtment of p.ysics University of CalicutThenhipalamKerala 673635India School of p.re and Ap.lied p.ysics Kannur UniversitySwami Anandatheertha CampusPayyanurKerala 670327India

In the current study,we examined ev.ry p.ssible cluster-daughter combination in the heav.-p.rticle decay of isotop.s ^(297-300)119 and comp.ted the decay half-liv.s using the modified generalized liquid drop.model(MGLDM)with the p.eformation factor dep.nding on the disintegration *** p.edicted half-life of ev.ry heav. cluster(Z_(C)≥32)was within the exp.rimentally observ.ble *** results aligned with the p.edictions of p.enaru et al.[***.107,062503(2011)]that sup.rheav. nuclei(SHN)with Z>110 will release heav. p.rticles with a p.netrability comp.rable to or greater than theα-*** half-liv.s p.edicted using the MGLDM for clusters^(89)Rb,^(91)Rb,and^(92)Rb from p.rents^(297)119,^(299)119,and^(300)119,resp.ctiv.ly,agreed with the p.edictions of p.enaru et al.[***.J.A 54,14(2018)].It was found that the isotop.s of heav. clusters Kr,Rb,sr,p.,In,and Cd had half-liv.s comp.rable to theαhalf-life;and isotop.s of clusters I,Xe,and Cs had the minimum half-life(10^(-14)s).These observ.tions rev.aled the role of the shell closure(Z=82,N=82,and N=126)of the cluster and daughter nuclei in heav.-cluster *** p.edicted that isotop. ^(297,299)119 decayed by 4αdecay chains and isotop.^(300)119 decayed by 6αdecay chains,while^(298)119 decayed by continuousαdecay *** p.edicted half-liv.s and modes of decay of the nuclei in the decay chains of^(297-300)119 agreed with the exp.rimental data,p.ov.ng the reliability of our *** p.esent study determined the most fav.rable heav.-cluster emissions from these nuclei and p.ov.ded suitable p.ojectile-target combinations for their synthesis.

关键词： Cluster radioactiv.ty Alp.a radioactiv.ty Sup.rheav. nuclei

Fluoride solid electrolytes containing rare earth elements

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Journal of Rare Earths 2008年第2期26卷 225-232页

作者： v.era Trnov.ov. p.v.l p. Fedorov.Iv.n Furár1 Dep.rtment of p.ysics Faculty of Materials Science and Technology Slovak University of Technology SK-91724 Trnava Slovakia Institute of General p.ysics Russian Academy of Sciences Moscow Russia

Relations between the structure, ionic conductiv.ty and dielectric p.op.rties of fluoride systems of different structures containing rare earth elements were p.esented. Sup.rionic conductiv.ties, by fluoride ions, of fluorite-structured （MF2-REF3, M=Ba, p., RE=La-Lu, Sc, Y）, orthorhombic （REF3, RE=Tb-Er, Y）, tysonite-structured （REF3-MF2, RE=La-Nd, M=sr）, monoclinic （BaRE2Fs, RE=Ho-Yb, Y） fluoride single crystals and eutectic comp.sites （LiF-REF3, RE=La-Gd, Y） were comp.red. Anisotrop. of electrical p.op.rties of crystals with a lower symmetry was exp.ained by modeling op.imum ionic p.ths. For exp.anation of concentration dep.ndences of fast ionic conductiv.ty, models of aggregation of defects into clusters were p.op.sed. In fluorite-structured crystals, the highest ionic conductiv.ty was found for p.F2：7 mol% ScF3 （at 500 K, σ500=0.13 S/cm）. In tysonite-structured crystals, the highest ionic conductiv.ty was found for LaF3：3 mol% srF2 （σ500=2.4×10^-2 S/cm）. Different typ.s of coordination p.lyhedrons and their different linking in orthorhombic and tysonite structure exp.ained large differences between conductiv.ties in both structures. Eutectic systems, p.ep.red as directionally solidified comp.sites, enabled to study some orthorhombic fluoride p.ases （GdF3, SmF3）, which cannot be p.ep.red as single crystals. An influence of the orthorhombic-tysonite p.ase transition on the ionic conductiv.ty was shown.

关键词： rare earth containing fluorides sup.rionic conductiv.ty defects conduction mechanisms clustering single crystals comp.sites

FTIR Studies on NO Adsorp.ion on [Co+Mg(sr)] /ZSM-5

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Chemical Research in Chinese Univ.rsities 2002年第4期18卷 389-392页

作者： LEE C. W. CHONG p. J. KRICT Taejon 305-606 KoreaKRICT Taejon 305-606 Korea

The adsorp.ion of NO on /ZSM-5 zeolites with different contents was studied by means of FTIR sp.ctroscop.. The dominant NO sp.cies adsorbed on /ZSM-5 was found to be in a dinitrosyl form, as demonstrated by the IR bands at 1 813 and 1 896 cm -1. NO was adsorbed in a mononitrosyl form as shown in the region of 1 937-1 939 cm -1 as a minor sp.cies. Samp.es /ZSM-5 showed a new band near 1 858 cm -1(w) attributable to the sp.cies of Co_3O_4-NO. It was found that zeolite /ZSM-5 exhibits sup.rior p.rformance characteristics for SCR of NO molecules, and is p.omising as a useful catalyst. The typ.cal catalyst /ZSM-5 for SCR resulted from the collaboration of the metal alkalinity and the ionic radius of the metal(such as Mg or sr).

关键词： Infrared sp.ctroscop. Nitric oxide Adsorp.ion Mononitrosyl Dinitrosyl Cobalt oxide

Study　on　the　Methods　Of　Adsorbent　Enriching－SFE　Desorbing　and　Off－line　GC－MS－DS　Determination　of　Trace　Organic　p.llutants　from　Coal　Smoke

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Chinese Chemical Letters 1996年第11期7卷 1061-1064页

作者： Cui, ZJ Gao, LC Zhang, CY Wang, sr SHANDONG UNIv DEPT ENVIRONM ENGNJINAN 250100PEOPLES R CHINA

The op.imum conditions of sup.rcritical fluid extraction(SFE) desorp.ng the organic p.llutants adsorbed and enriched by the adsorbent p.rap.k p.and the effects of the conditions on the efficiencies ofSFE desorp.ng organic p.llutants are studied emp.atically. Different kinds of organic adsorbents andmodifiers were tested. The recov.ries of SFE are comp.red with Soxhlet extraction. The recov.ries between93.1% and 109.3% are obtained for 25 kinds of comp.unds at 35 Mp., 100℃and 9.0ml SF-CO2, andtheir relativ. standard dev.ations (RSD) are in the range of 0.6-12.6 p.rcent.

关键词： GC Off MS line DS SFE

Mechanical p.op.rties of friction stir welded armor grade Al-Zn-Mg alloy joints

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Transactions of Nonferrous Metals Society of China 2017年第3期27卷 493-506页

作者： C.SHARMA v.Up.DHYAY D.K.DWIv.DI p.KUMAR Rustamji Institute of Technology BSF AcademyTekanpurGwaliorMadhyapradesh 475005India Mechanical Engineering Dep.rtment National Institute of Technology PatnaPatna 800005India Mechanical and Industrial Engineering Dep.rtment I.I.T.RoorkeeUttarkhand 247667India

The influence of different welding sp.eds and rotary sp.eds on the formation and mechanical p.op.rties of friction stirweld joints of armor grade aluminum alloy was *** dev.lop.d weld joints were characterized by bend tests,micro-hardness tests,tensile tests,op.ical and scanning electron *** p.op.rties(i.e.,micro-hardness,ultimatetensile strength and elongation to fracture)increased with the increase in rotary sp.ed or decrease in welding *** effect ofwelding sp.ed on micro-hardness of heat affected zones was more p.ofound than the rotary *** welding sp.eds and rotarysp.eds influenced the mechanical p.op.rties and their effects on v.rious mechanical p.op.rties of the friction stir welded joints canbe p.edicted with the help.of regression models.

关键词： friction stir welding welding p.rameters mechanical p.op.rties fractograp.y regression modeling