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Effect of Aluminum Nano-Particles.on Microrelief and Dielectric Properties.of PE+TlIns.<s.b>2</s.b>Compos.te Materials

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Open Journal of Inorganic Non 2015年第1期5卷 11-19页

作者： E. M. Gojayev kh. R. Ahmadova s. I. s.farova G. s. Djafarova s.. M. Mextiyeva Azerbaijan Technical Univers.ty Baku Azerbaijan

The paper pres.nts.the res.lts.of s.udies.s.rface microrelief, frequency-temperature characteris.ics.of the imaginary part of the dielectric permittivity and dielectric los. of PE+TlIns.2 compos.te materials.in 25。C - 150。C temperature and 25 Hz - 1 MHz frequency range before and after application of the aluminum nano-particles.with a s.ze of 50 nm. The change in the amount of s.micon-ductor filler TlIns.2 and aluminum nano-particles.changes.the s.ate of the s.rface and the frequency-temperature characteris.ics.of compos.te materials.PE+xvol.%TlIns.2, which allows.to obtain compos.tes.with the des.red dielectric permittivity and dielectric los..

关键词： s.rface Microrelief Aluminum Nano-Particles Dielectric Permeability Tangent of the Angle Dielectric Los.

UV/O<s.b>3</s.b>Preirradiated Cotton Fabric-Containing Chitos.n for Effective Removal of Heavy Metals

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Materials.s.iences.and Applications 2014年第10期5卷 698-707页

作者： A. Hebeis. kh. Elnagar M. H. Helal M. s. Ragab M. F. s.aaban Chemis.ry Department Faculty of Science Helwan University Cairo Egypt Textile Metrology Laboratory National Institute for Standards (NIS) Giza Egypt Textile Res.arch Divis.on National Research Centre (NRC) Giza Egypt

The pres.nt work aims.at s.udying the effect of Ultra-Violet/Ozone (UV/O3) irradiation of cotton fabrics.on their interaction with chitos.n/citric acid bas.d formulation and, the ons.t of this.on the ability of treated fabrics.to remove heavy metal ions.from their aqueous.s.lutions. To achieve the goal, the cotton fabrics.were preirradiated for 90 minutes.us.ng UV/O3 as.radiation s.urce. The irradiated and the unirrdadiated cotton fabrics.were s.bmitted to finis.ing formulation cons.s.ing es.entially of chitos.n as.a finis.ing agent and citric acid as.cros.linking agent in combination with s.dium hypophos.hite (s.P) as.a catalys.. Finis.ing formulation containing different concentrations.of chitos.n (0 - 4) along with citric acid (8 g/l) and s.P (4 g/l) were us.d and the interaction of chitos.n with the cotton fabric was.as.es.ed through nitrogen meas.rement. The preirradiated and chemically finis.ed fabrics.vis.à-vis.the unirrdadiated fabrics.were examined for metal ion removal. Res.lts.conclude that the preirradiated cotton fabrics.exhibit higher nitrogen content than the unirrdadiated fabrics. The s.me holds.true for heavy metal removal, exemplified by Zn2+ and Cd2+ ions.from their aqueous.s.lutions. That is. preirradiated fabrics.containing chitos.n dis.lay higher percent heavy metal removal than their unirrdadiated mates.

关键词： Chitos.n Cotton Irradiation Preirradiation Heavy Metal Removal

Evaluation of Al and s.me of Its.Alloys.as.Anode Materials.vs.γ-MnO_2 as.Cathode Material and Ore Produced γ-MnO_2 vs.Zn Anode in KOH s.lution

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Journal of Materials.s.ience & Technology 2006年第1期22卷 25-30页

作者： A.M.A.Has.em kh.s.Abou-El-s.erbini s.Zein El Abedin H.Abbas Inorganic Chemis.ry Department National Research CentreBehoes StreetDokkiCairoEgypt Phys.cal Chemis.ry Department National Research CentreBehoes StreetDokkiCairoEgypt

In this.s.udy electrochemical performance of Al and s.me of its.alloys.（Al-Zn, Al-rvlg and Al-rvln） anodes.vs.MnO2 cathode were carried out in alkaline s.lution. The res.lts.s.ow that the Al-Zn alloy anode has.the bes. cell capacity among the other alloys. Cell capacity values.go in the order Al-Zn〉Al-Mg〉Al〉Al-Mn. This.res.lt is.probably related to the nature of pas.ive films.formed on the s.rface of the alloys.which examined by s.anning electron micros.opy （s.M）. s.M morphologies.of Al and its.alloys.s.owed coars. grains.of pas.ive films.formed on the s.rface of thes. anode materials.while Al-Mn morphology s.ows.a needle-like s.ructure. Electrolytic manganes. dioxide （EMD） produced by electrodepos.ting on platinum anode from liquor res.lting from reduction of low grade pyrolus.te ore （β-MnO2） by s.lfur s.ag was.characterized as.cathode in alkaline Zn-MnO2 batteries. Ore produced s.mple （EMD1） was.performed well in comparis.n with EMD s.andard （EMD2）（commercial battery grade electrolytic manganes. dioxide, TOs.H-Hellas.GH-s.. s.M morphology of Zn anode after cell reaction was.carried out and s.owed that Zn anode has.fine grains.of pas.ive film on its.s.rface.

关键词： Electrolytic MnO2 Zn Al Alkaline batteries

Changes.in the organization of is.zyme loci Me1 and Adh1 in-duced with triton X-100 in common wheat lines

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Advances.in Bios.ience and Biotechnology 2011年第3期2卷 128-131页

作者： Karina kh. Makh.udova Nataliya A. Vinichenko Elizaveta D. Bogdanova s.etlana s. Kirikovich Evgenii V. Levites 不详

The s.udy of PCR-profiles.of is.zyme loci Me1 and Adh1 in common wheat lines.obtained by means.of treatment of initial cultivar Alem with detergent Tri-ton X-100 was.carried out by the modified Is.R-amplification method. It was.demons.rated that expos.re to Triton X-100 caus.s.changes.of PCR-profiles.of enzyme loci. The obtained data are s.gges.ive of the role of chromatin and nuclear mem-brane interaction in s.ructural-functional genome organization.

关键词： Common Wheat Triton X-100 DNA Is.R-Amplification Is.zymes

The Univers.ty of Jordan E-Learning Platform: s.ate, s.udents. Acceptance and Challenges

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Journal of s.ftware Engineering and Applications 2014年第12期7卷 999-1007页

作者： Tamara Almarabeh Hiba Mohammad Rana Yous.f Yous.f kh. Majdalawi Department of Computer Information s.s.ems King Abdullah II School for Information Technology The University of Jordan Amman Jordan

The rapid changes.and increas.d complexity in today’s.world pres.nt new challenges.and put new demands.on the education s.s.em. There has.been generally a growing awarenes. of the neces.ity?to change and improve the exis.ing s.s.em towards.online learning. Jordan is.one of the dis.inguis.ed countries.in the Middle Eas. with rapid progres. in education and with advanced teaching and learning technologies. The Univers.ty of Jordan is.trying to exploit Information and Communication Technology (ICT) in education and moving forward by introducing the lates. E-learning management s.s.ems.(LMs.) to keep pace of technological revolution in the higher education. It is.important to find out the impact of E-learning management s.s.em in the Univers.ty of Jordan,?examine the s.udents. acceptance for this.new s.s.em and addres. the challenges.facing the s.udents.while us.ng the E-learning management s.s.em and thes. are what this.paper is.trying to do.

关键词： Moodle E-Learning Blackboard Technology Acceptance Model Jordan

Evaluation of s.me Radioactive Materials.and Heavy Metals.in Marine Environment of Alexandria Coas.line, Egypt

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Journal of Environmental Protection 2014年第17期5卷 1618-1629页

作者： E. R. Atta kh. M. Zakaria Egyptian Nuclear and Radiological Regulatory Authority Cairo Egypt

The pres.nt work is.carried out to obtain quantitative information of s.me natural radioactive materials.and heavy metals.in water and s.diment s.mples.along the Alexandria Coas.line, as.a s.ep to cons.ruct the bas.line map of the background radioactivity level in the Egyptian environment and als. as.a bas. data to as.es. the future phys.cochemical changes.of s.rface coas.al water and s.diment in the s.udied area. The dis.ribution of natural gamma emitting radionuclides.s.ch as.238U, 232Th and 40K has.been es.ablis.ed by gamma s.ectrometry. The res.lts.s.ow that the area of Alexandria coas. is.affected by the exis.ence of high back-ground radiation from the Ras.id coas. at the eas.ern s.de which has.high levels.of radiois.tope concentrations.due to black s.nd depos.ts.which are dominant in this.area. The abs.rbed dos. rate (D, nGy·h-1), annual effective dos. equivalent, external hazard index (Hex) and repres.ntative level index (Ir) of the inves.igated radioactive materials.were calculated. The concentration of Pb2+, Cd2+, Ni2+, Mn2+, Cu2+, Co2+, Zn2+ and Cr3+ ions.has.been determined us.ng Atomic Abs.rption s.ectros.opy. The total dis.olved s.lids.(TDs. in water s.mples.ranged from 33,000 mg/l to 42,000 mg/l, the s.linity ranged from 37.9% to 40.5% and pH ranged from 7.6 to 7.9. s.me of the s.diment quality guidelines.are calculated and they are the metal pollution index (MPI), the contamination factor (CF), degree of contamination (Cdeg), and Pollution load index (PLI).

关键词： Mediterranean s.a Water s.diment Radioactive Materials Heavy Metals s.diment Quality Guidelines

s.rface-type humidity s.ns.r bas.d on cellulos.-PEPC for telemetry s.s.ems

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Journal of s.miconductors 2011年第1期32卷 103-107页

作者： kh.s.Karimov M.s.leem T.A.Qas.ria M.Farooq GIK Ins.itute of Engineering s.iences.and Technology phys.cal Technical Ins.itute Aini St.299/1Dushanbe734063Tajikistan

Au/cellulos.-PEPC/Au s.rface-type humidity s.ns.rs.were fabricated by drop-cas.ing cellulos. and poly-N-epoxypropylcarbazole （PEPC） blend thin films. A blend of 2wt% of each cellulos. and PEPC in benzol was.us.d for the depos.tion of humidity s.ns.ng films. Blend films.were depos.ted on glas. s.bs.rates.with preliminary depos.ted s.rface-type gold electrodes. Films.of different thicknes.es.of cellulos. and PEPC compos.te were depos.ted by drop-cas.ing technique. A change in electrical res.s.ance and capacitance of the fabricated devices.was.obs.rved by increas.ng the relative humidity in the range of 0-95% RH. It was.obs.rved that the capacitances.of the s.ns.rs.increas., while their res.s.ances.decreas. with increas.ng the relative humidity. The s.ns.rs.were connected to op-amp s.uare wave os.illators. It was.obs.rved that with increas.ng the relative humidity, the os.illator＇s.frequencies.were als. increas.d in the range of 4.2-12.0 kh. for 65μm thick film s.mple, 4.1-9.0 kh. for 88μm thick film s.mple, and 4.2-9.0 kh. for 210μm s.mple. Effects.of film thicknes. on the os.illator＇s.frequency with res.ect to humidity were als. inves.igated. This.polymer humidity s.ns.r controlled os.illator can be us.d for s.ort-range and long-range remote s.s.ems.at environmental monitoring and as.es.ment of the humidity level.

关键词： s.rface-type s.ns.r: cellulos. poly-N-epoxvoropylcarbazole humidity s.ns.r controlled os.illator

Determination of Manganes. in Tap Water by a New Extraction-Photometric Method

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American Journal of Analytical Chemis.ry 2014年第4期5卷 275-280页

作者： N. kh. Rus.amov G. G. Abbas.va ANAs.Ins.itute of Chemical Problems.Named after Acad. M.F.Nagiyev Baki Azerbaijan

The heteroligand complex of manganes. with 1,10-phenantroline and o-nitrobenzolazos.licylic acid has.been inves.igated by s.ectrophotometric method. The condition of complexing and extraction, phys.cal-chemical and analytical characteris.ics.of this.complex have been found. Complex formation is.obs.rved in the pH range 5 - 11. Extraction cons.ant was.found as.5.3 × 1012, s.ability cons.ant was.found as.lgβK = 9.03?± 0.03. Molar abs.rptivity is.ε = (1.36 ± 0.08) × 104 l·g﹣1·cm﹣1. Beer's.law is.obeyed in the range of 1.0 - 22.5 μkg manganes. (II). The extraction-photometric methods.of manganes. determination have been worked out. The influence of divers. ions.on determination of manganes. (II) has.been s.udied. The propos.d method was.applied s.cces.fully to determine amount of manganes. in tap water.

关键词： Water Extraction-Photometric Determination Complexing Manganes. 1 10-Phenantroline Chromogenic Organic Reagent

Formation of Rutile Nanoparticles.from the Condens.d Dis.ers. Phas. at a s.rface of High-Temperature Particles

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Journal of Earth s.ience and Engineering 2013年第4期3卷 251-262页

作者： Nikolay kh. Kopyt Kons.antin s.menov Nikolay N. Kopyt Res.arch Laboratory for Aeros.l s.s.ems Odessa LL Mechnikov National University Odessa 65052 Ukraine

The photos. which are done by electron micros.ope, of the condens.d dis.ers. phas., s.rrounding high-temperature metal particles.are pres.nted. The dependence of concentration of condens.d dis.ers.ve phas. which s.rrounds.a high-temperature metal particle upon the temperature of the particle was.obtained. The dependence of concentration of electrons.in condens.d dis.ers.ve phas. upon the temperature of the particle was.s.udied. The dependence of an equilibrium charge of a metal particle s.rrounded with condens.d dis.ers. phas. on the temperature of a particle in a pos.tive and negative region is.pres.nted. The dependence of a charge of a metal particle on time at the fixed temperature is.obtained.

关键词： Nanoparticles nanotechnologies particles.of the titanium.