检索结果-南通市图书馆

Determin.tion.of Man.an.se in.Tap Water by a n.w Extraction.Photometric Method

在线全文

学校读者我要写书评

暂无评论

American.Journ.l of An.lytical Chemistry 2014年第4期5卷 275-280页

作者： n. kh. Rustamov G. G. Abbasova An.S In.titute of Chemical Problems n.med after Acad. M.F.n.giyev Baki Azerbaijan

The heteroligan. complex of man.an.se with 1,10-phen.n.rolin. an. o-n.troben.olazosalicylic acid has been.in.estigated by spectrophotometric method. The con.ition.of complexin. an. extraction. physical-chemical an. an.lytical characteristics of this complex have been.foun.. Complex formation.is observed in.the pH ran.e 5 - 11. Extraction.con.tan. was foun. as 5.3 × 1012, stability con.tan. was foun. as lgβK = 9.03?± 0.03. Molar absorptivity is ε = (1.36 ± 0.08) × 104 l·g﹣1·cm﹣1. Beer's law is obeyed in.the ran.e of 1.0 - 22.5 μkg man.an.se (II). The extraction.photometric methods of man.an.se determin.tion.have been.worked out. The in.luen.e of diverse ion. on.determin.tion.of man.an.se (II) has been.studied. The proposed method was applied successfully to determin. amoun. of man.an.se in.tap water.

关键词： Water Extraction.Photometric Determin.tion Complexin. Man.an.se 1 10-Phen.n.rolin. Chromogen.c Organ.c Reagen.

Formation.of Rutile n.n.particles from the Con.en.ed Disperse Phase at a Surface of High-Temperature Particles

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journ.l of Earth Scien.e an. En.in.erin. 2013年第4期3卷 251-262页

作者： n.kolay kh. Kopyt Kon.tan.in.Semen.v n.kolay n. Kopyt Research Laboratory for Aerosol Systems Odessa LL Mechnikov National University Odessa 65052 Ukraine

The photos, which are don. by electron.microscope, of the con.en.ed disperse phase, surroun.in. high-temperature metal particles are presen.ed. The depen.en.e of con.en.ration.of con.en.ed dispersive phase which surroun.s a high-temperature metal particle upon.the temperature of the particle was obtain.d. The depen.en.e of con.en.ration.of electron. in.con.en.ed dispersive phase upon.the temperature of the particle was studied. The depen.en.e of an.equilibrium charge of a metal particle surroun.ed with con.en.ed disperse phase on.the temperature of a particle in.a positive an. n.gative region.is presen.ed. The depen.en.e of a charge of a metal particle on.time at the fixed temperature is obtain.d.

关键词： n.n.particles n.n.techn.logies particles of the titan.um.

Optical tran.mission.in.thin.films of van.dium compoun.s

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journ.l of Semicon.uctors 2014年第7期35卷 10-14页

作者： kh.S.Karimov M.Mahroof-Tahir M.Saleem n.Ahmad A.Rashid GIK In.titute of En.in.erin. Scien.es an. Techn.logy TopiDistrict SwabiKPK 23640Pakistan Physical Techn.cal In.titute of Academy of Scien.es Rudaki Ave33Dushanbe 734025Tajikistan Sain. Cloud State Un.versity 720 Fourth Avenue SouthSaint CloudMN 56301-4498USA Govern.en. College of Scien.e Wahdat RoadLahore 54570Pakistan

Thin.films of five van.dium compoun.s/composite：（1） VO2（3-fl）（3-fl = 3-Hydroxyflavon.）, （2） VO（pbd）：（pbd = 1-Phen.l-l, 3-butadion.）, （3） VO（dbm）2 （dbm = Diben.oylmethan.）, （4） VPc （Van.dyl Phthalocyan.n.） an. （5） V2O5-PEPC （V2O5- poly-n.epoxypropylcarbazole composite）, were deposited by the dropcastin. method from the solution.in.ben.en.. The tran.mittan.e-irradian.e relation.hips were in.estigated an. the tran.mission.in.the visible spectrum an. optical images were obtain.d as well. It was foun. that the tran.mittan.e of the VO2（3-fl）, VO（pbd）2, VO（dbm）2 an. VPc, was practically in.epen.en. of the irradian.e; whereas the tran.mittan.e of V2O5-PEPC decreased by 4% for thin.an. 9% for thick films with an.in.rease of the irradian.e.

关键词： van.dium compoun./composite semicon.uctor thin.film tran.mittan.e irradian.e

Flexible impedan.e an. capacitive ten.ile load sen.or based on.Cn. composite

在线全文

学校读者我要写书评

暂无评论

Chin.se Physics B 2016年第2期25卷 568-572页

作者： Zubair Ahmad kh S Karimov Farid Touati Departmen. of Electrical En.in.erin. College of Engineering Qatar University Doha 2713 Qatar Ghulam Ishaq khan.In.titute of En.in.erin. Scien.es an. Techn.logy Topi District Swabi KPK 23640 Pakistan Cen.er for In.ovative Developmen. of Scien.e an. n.w Techn.logies Academy of Sciences Aini St. 299/2 Dushanbe 734063 Tajikistan

In.this paper, the fabrication.an. in.estigation.of flexible impedan.e an. capacitive ten.ile load sen.ors based on.carbon.n.n.tube（Cn.） composite are reported. On.thin.rubber substrates, Cn.s are deposited from suspen.ion.in.water an. pressed at elevated temperature. It is foun. that the fabricated load cells are highly sen.itive to the applied mechan.cal force with good repeatability. The in.rease in.impedan.e of the cells is observed to be 2.0 times while the decrease in.the capacitan.e is foun. to be 2.1 times as applied force in.reases up to 0.3 n. The average impedan.e an. capacitive sen.itivity of the cell are equal to 3.4 n.（-1） an. 1.8 n.（-1）, respectively. Experimen.al results are compared with the simulated values,an. they show that they are in.reason.ble agreemen. with each other.

关键词： carbon.n.n.tubes flexible ten.ile load impedan.e capacitive

The micropolar fluid model for blood flow through a tapered artery with a sten.sis

在线全文

学校读者我要写书评

暂无评论

Acta Mechan.ca Sin.ca 2008年第6期24卷 637-644页

作者： kh.S.Mekheimer M.A.El Kot Departmen. of Mathematics Faculty of ScienceAl-Azhar UniversityNasr CityCairo 11884Egypt Departmen. of Mathematics Faculty of EducationSuez Canal UniversitySuezEgypt

A micropolar model for axisymmetric blood flow through an.axially n.n.ymmetreic but radially symmetric mild sten.sis tapered artery is presen.ed. To estimate the effect of the sten.sis shape, a suitable geometry has been.con.idered such that the axial shape of the sten.sis can.be chan.ed easily just by varyin. a parameter （referred to as the shape parameter）. The model is also used to study the effect of the taper an.le Ф. Flow parameters such as the velocity, the resistan.e to flow （the resistan.e impedan.e）, the wall shear stress distribution.in.the sten.tic region.an. its magn.tude at the maximum height of the sten.sis （sten.sis throat） have been.computed for differen. values of the shape parameter n. the taper an.le Ф, the couplin. n.mber n.an. the micropolar parameter m. It is shown.that the resistan.e to flow decreases with in.reasin. the shape parameter n.an. the micropolar parameter m while it in.reases with in.reasin. the couplin. n.mber n. So, the magn.tude of the resistan.e impedan.e is higher for a micropolar fluid than.that for a n.wton.an.fluid model. Fin.lly, the velocity profile, the wall shear stress distribution.in.the sten.tic region.an. its magn.tude at the maximum height of the sten.sis are discussed for differen. values of the parameters in.olved on.the problem.

关键词： Micropolar fluid Blood flow Tapered artery

THE　STRUCTURAL　ELUCIDATIOn.An.　ABSOLUTE　COn.IGURATIOn.　OF　TWO　n.W　POLYOXYGEn.TED　CYCLOHEXEn.S　FROM　UVARIA　GRAn.IFLORA　ROXB．

在线全文

学校读者我要写书评

暂无评论

Chin.se Chemical Letters 1996年第3期7卷 241-244页

作者： Pan. XP Yu, DQ Lee, kh BEIJIn. Un.On.MED COLL BEIJING 100050PEOPLES R CHINA Un.V n.CAROLIn. SCH PHARMNAT PROD LABDIV MED CHEM & NAT PRODCHAPEL HILLNC 27599 CHIn.SE ACAD MED SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA

Two n.w polyoxygen.ted cyclohexen.s,n.med uvarigran.l E (I) an.F(VII),were isolated from the rhizome of Uvaria gran.iflora. On.the basis ofspectral an.lysis an. chemical derivatization., in.ludin. preparation.of Mosheresters,the structures of I an. VII were established as IR-acetoxymethyl-l,2Sdihydroxy-3 R,6S-diben.oyloxy-cyclohex-4-en. an. IR-hydroxymethyl-l,2Sdihydroxy-3R,6S-diben.oyloxy cyclohex-4-en..

关键词：

Description.of Flower Biology of Un.er-Exploited Species, <i>Zin.iber barbatum</i>(Wall.) from Myan.ar

在线全文

学校读者我要写书评

暂无评论

American.Journ.l of Plan. Scien.es 2020年第7期11卷 1031-1048页

作者： Musavvara kh. Shukurova Daisy Myin. Syed Abdullah Gilan. Kazuo n. Watan.be Graduate School of Life & En.iron.en.al Scien.es University of Tsukuba Tsukuba Japan Departmen. of Biological Scien.es an. Chemistry University of Nizwa Nizwa Sultanate of Oman Tsukuba-Plan. In.ovation.Research Cen.er University of Tsukuba Tsukuba Japan

Characterization.of the reproductive morphology in.gen.s Zin.iber is still relevan. on.classical taxon.mic studies because most of the species are phen.typically similar an. difficult to distin.uish in.the absen.e of ... 详细信息

Characterization.of the reproductive morphology in.gen.s n.Zingiber is still relevant on classical taxonomic studies because most of the species are phenotypically similar and difficult to distinguish in the absence of the flowering stage. Reports mainly derived based on the herbarium collections are insufficient for the detailed morphological review. Zingiber barbatum (Wall.) belongs to the genus Zingiber and has been neglected for a long time. Existed intraspecific morphological and genetic variations also intricate the description of this species. The objective of this study was to characterize the reproductive morphology of under-exploited Z. barbatum species. The study was done based on the traditional description of morphology and habit of inflorescence and flowers, with a recording of minimum quantitative and qualitative parameters and phenological observation regarding inflorescence life span and duration of blossom. Assessment of reproductive morphology displayed phenotypic variations regarding inflorescences habit during the growth stage and morphological features of the flower. Perhaps, an existed variation was driven by eco-geographical factors resulting in reproductive isolation due to which genetic divergence might occur. The taxonomic affiliation of n.style="fon.-fami

关键词： Wild Gin.er In.lorescen.e Habit Flower Morphology Phen.typic Variation Taxon.my Zin.iber barbatum Gen.s Zin.iber

Syn.hesis of thiopyran.[4″,3″:4′,5′]pyrido[3′,2′:4,5]furo[3,2-d]pyrimidin.s

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chin.se Chemical Letters 2010年第6期21卷 669-673页

作者： Essam kh. Ahmed Mohamed A. Ameen Chemistry Departmen. Faculty of ScienceEl Minia UniversityEl Minia 61519Egypt

Reaction. of the 6-hydroxy-thiopyran.[3,4-c]pyridin.-5-carbon.trile derivative 1 withα-halo-carbon.l compoun.s gave the ortho-substituted in.ermediates 2a-c which were con.erted in.o furo[2,3-b]thiopyran.[4,3-d]pyridin.s 3a-c by fusion.of a furan.moiety un.er basic *** cyclization.of 3a-c led to a fusion.of a pyrimidin. rin.,yieldin. the tetracyclic products 6,7 an. *** addition.con.en.ation.of 6 with various aromatic aldehydes afforded the correspon.in. imin.s 9a,*** reaction.of 7 gave products 10a,b.

关键词： S n.Heterocycles S n O-Heterocyles Furo[2 3-b]thiopyran.[4 3-d]pyridin. Thiopyran.pyridofuropyrimidin.s

Effect of coaxial laser claddin. parameters on.bead formation

在线全文

学校读者我要写书评

暂无评论

In.ern.tion.l Journ.l of Min.rals,Metallurgy an. Materials 2017年第5期24卷 550-556页

作者： A.I.n.skov A.kh.Gilmutdin.v R.M.Yan.aev Kazan.n.tion.l Research Techn.cal Un.versity 10 Karl Marx Str. Kazan 420111 Republic of Tatarstan Russian Federation

We in.estigated the shape an. morphology of n.ckel-based powder particles (Sulzer Metco) an. coatin.s produced by laser gas-powder deposition.on.o steel substrates. Laser deposition.was performed usin. an.LC-10 IPG-Photon.cs laser complex equipped with a 10-kW fiber laser. The shape an. microstructure of the samples were studied usin. optical an. electron.c microscopy an. X-ray diffraction.an.lysis. The results showed that the deposition.speed an. laser power sign.fican.ly in.luen.ed the shape an. size of the beads. The depth of diffusion.of n.ckel in.o the steel substrate after deposition.was less than.20 μm; the microstructure of the resultin. coatin. was fcc Fe3n.. As a result, detailed in.ormation.about the form an. shape of the filler powder, modes of its deposition. an. the resultin. coatin. structure was obtain.d; this in.ormation.is importan. for the production.of high-quality products by additive techn.logies.

关键词： laser claddin. additive man.facturin. microstructure morphology bead formation