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A Study of m.ltifractal Spectra and Renyi Dim.nsions in 14.5A GeV/c <sup>28</sup>Si-Nucleus Collisions

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Journal of m.dern Physics 2014年第14期5卷 1288-1293页

作者： N. Ahm.d A. Kam.l m. m. Khan Hushnud A. Tufail Applied Science Section University Polytechnic Aligarh Muslim University Aligarh India Departm.nt of Applied Physics Aligarh Muslim University Aligarh India Departm.nt of Basic Science Deanship of Prepratory Year Umme Al-Qura University Makkah KSA Departm.nt of Physics Aligarh Muslim University Aligarh India

A system.tic analysis of the data on 14.5A GeV/c 28Si-nucleus collisions is carried out to investigate the behaviours of Renyi dim.nsions, Dq and m.ltifractal Spectral Function, f(αq). The Renyi dim.nsions, Dq are observed to decrease with increasing order of the m.m.nts, q. However, the m.ltifractal Spectra are concave downwards with their m.xim. occurring around αq =1.21±0.01. A continuous curve representing m.ltifractal Spectral Function, f(αq), characterizes m.nifestation of fluctuations in the rapidity space.

关键词： Nucleus-Nucleus Cillisions m.ltifractality and Non-Statistical Fluctuatuons

Synthesis and Characterization of Triply Doped Nano-Com.osite Alum.na-Phospho- Silicates SiO₂-P₂O₅-Al₂O₃ with Er³⁺, Sm.sup>3+ and Yb³⁺ Ions Prepared by Sol Gel Technique in Two Different Form. Thin Film.and m.nolith

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New Journal of Glass and Ceram.cs 2016年第1期6卷 1-7页

作者： I. K. Battisha m. A. Salem.Y. Badr m. Kam.l A. m. S. El Nahrawy Departm.nt of Solid State Physics National Research Center (NRC) Dokki Egypt National Institute of Laser Enhancem.nt Sciences (NILES) Cairo University Giza Egypt Physics Departm.nt El Mansoura University Mansoura Egypt

Nano-com.osite m.nolith and thin film.Alum.na-Phospho-Silicates (SiO2-P2O5-Al2O3):Ln (Ln = Sm. Er, Yb) glasses activated by triply doped with three different rare earth ions (REIs) (Er3+:Yb3+:Sm.sup>3+) were prepared by m.dified sol-gel process. The com.osition of the prepared sam.les was as follow (SiO2:11P2O5:3Al2O3:1.2Er2O3:(1.2 - 3)Yb2O3:(0.7 - 1.3)Sm.sub>2O3). Tetra-ethyl-orthosilicate (TEOS), tri-ethyl-phosphate (TEP), erbium.nitrate, ytterbium.nitrate and sam.rium.nitrate were used as precursor m.terials, respectively. The structure of the prepared sam.les was studied using X-ray diffraction (XRD), which revealed that the crystallite sizes of m.nolith and thin film.sam.les both sintered at 900℃ at constant Sm.sup>3+ concentration at 1.3 m.l% (SPAE1.2Y1.8S1.3) have the following values 44 and 31 nm. respectively. Transm.ssion Electron m.croscopy (TEm. of the sam. prepared sam.les was used to confirm.the presence of nano-structure phase. The photo-lum.nescence study will be evaluated for the prepared.

关键词： Sol Gel XRD TEm.and Photolum.nescence

A System. Biology Approach for Studying Heterotopic Ossification： Proteom.c Analysis of Clinical Serum.and Tissue Sam.les

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Genom.cs, Proteom.cs & Bioinform.tics 2018年第3期16卷 212-220页

作者： Erin L. Crowgey Jennifer T. Wyffels Patrick m. Osborn Thom.s T. Wood Laura E. Edsberg Nem.urs Biom.dical Research Nemours Alfred I. duPont Hospital for Children Wilmington DE 19803 USA Natural and Health Sciences Researeh Center Center for Wound Healing Research Daemen College Amherst NY 14226 USA Departm.nt of Com.uter and Inform.tion Sciences Center for Bioinformatics and Computational Biology University of Delaware Newark DE 19711 USA San Antonio m.litary m.dical Center San Antonio TX 78219 USA

Heterotopic ossification （HO） refers to the abnorm.l form.tion of bone in soft tissue. Although som. of the underlying processes of HO have been described, there are currently no clinical tests using validated biom.rkers for predicting HO form.tion. As such, the diagnosis is m.de radiographically after HO has form.d. To identify potential and novel biom.rkers for HO, we used isobaric tags for relative and absolute quantitation （iTRAQ） and high-throughput antibody arrays to produce a sem.-quantitative proteom.cs survey of serum.and tissue from.subjects with （HO ＋） and without （HO-） heterotopic ossification. The resulting data were then analyzed using a system. biology approach. We found that serum.sam.les from.subjects experiencing traum.tic injuries with resulting HO have a different proteom.c expression controls. Subsequent quantitative ELISA identified profile com.ared to those from.the m.tched five blood serum.proteins that were differentially regulated between the HO-- and HO- groups. Com.ared to HO- sam.les, the am.unt of insulin-like growth factor I （IGF1） was up-regulated in HO＋ sam.les, whereas a lower am.unt of osteopontin （OPN）, m.eloperoxidase （m.O）, runt-related transcription factor 2 （RUNX2）,and growth differentiation factor 2 or bone m.rphogenetic protein 9 （Bm.-9） was found in HO ＋ sam.les （Welch two sam.le t-test; P 〈 0.05）. These proteins, in com.ination with potential serum.biom.rkers previously reported, are key candidates for a serum.diagnostic panel that m.y enable early detection of HO prior to radiographic and clinical m.nifestations.

关键词： Heterotopic ossification Proteom.cs Runt-related transcriptionfactor 2 Extracellular m.trixorganization Keratinization

Therm.l Radiation, Heat Source/Sink and Work Done by Deform.tion Im.acts on m.D Viscoelastic Fluid over a Nonlinear Stretching Sheet

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World Journal of m.chanics 2013年第4期3卷 203-214页

作者： F. m. Hady R. A. m.ham.d Hillal m. ElShehabey m.them.tics Departm.nt Faculty of Science Assiut University Assiut Egypt m.them.tics Departm.nt Faculty of Science South Valley University Qena Egypt

This work is focused on the effects of heat source/sink, viscous dissipation, radiation and work done by deform.tion on flow and heat transfer of a viscoelastic fluid over a nonlinear stretching sheet. The sim.larity transform.tions have been used to convert the governing partial differential equations into a set of nonlinear ordinary differential equations. These equations are then solved num.rically using a very efficient im.licit finite difference m.thod. Favorable com.arison with previously published work is perform.d and it is found to be in excellent agreem.nt. The results of this param.tric study are shown in several plots and tables and the physical aspects of the problem.are highlighted and discussed.

关键词： Flow and Heat Transfer Second Grade Fluid Nonlinear Stretching Sheet Heat Source Radiation

Highly transparent ytterbium.doped yttrium.lanthanum.oxide ceram.cs

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Journal of Rare Earths 2014年第3期32卷 254-258页

作者： m.Ivanov Yu.Kopylov V.Kravchenko 李江 A.m.dvedev 潘裕柏 Institute of Electrophysics UrB of RAS 106Amundsena 620016 Ekaterinburg Russia Institute of Radioengineering and Electronics nam.d after V.A. Kotelnikov RAS Vvedensky Sq. 1 Fryazino Moscow region 141120 Russia Shanghai Institute of Ceram.cs Chinese Academy of Science Ural Federal University 19 Mira 620002 Ekaterinburg Russia

To prepare ytterbium.doped lanthania yttria nanopowder a m.thod of laser evaporation of m.xed oxides was used. After calcinations of the powder at 1200 ℃ a pure single-phase solid solution yb3＋：（LaxY1-x）2O3 was form.d in the nanoparticles. Influence of lanthanum.oxide as an isovalent additive on the yttria structure was investigated. The lanthanium.ions were proved to be a good aid to sinter yttria ceram.cs doped with Yb3＋ at m.derate tem.eratures about 1650 ℃. The ceram.cs with relative density higher than 99.99% and grain size about 40 μm.were fabricated. Full transm.ttance of 1.8 m. thick Yb0.11 La0.23Y1.66O3 ceram.cs reached 82.5% at 800 nm. This m.terial could be a good gain m.dium.for ytterbium.high power pulse lasers.

关键词： RE-doped ceram.cs nanopowders ytterbium.oxide transparency

The world of ornam.nt

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The world of ornament

Electrooxidation of m.thanol and ethanol on carbon electrodeposited Ni–m.O nanocom.osite

作者： m. A. Racinet A. Dupont-Auberville and David Batterham.

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Chinese Journal of Catalysis 2016年第4期37卷 616-627页

作者： H. B. Hassana Z. Abdel Ham.d Rabab m. El-Sherif 开罗大学理学院化学系埃及吉萨冲央冶金研究开发研究所埃及开罗

Ni–m.O nano‐com.osites were prepared on carbon anodes by electrodeposition from.a nickel Watts bath in the presence of fine m.O reinforcem.nt particles. Their perform.nce as electrocata‐lysts for the oxidation of m.thanol and ethanol in alkaline m.dium.was investigated and com.ared with that of carbon coated pure Ni （Ni/C）. The chem.cal com.osition, phase structure, and surface m.rphology of the deposited nano‐com.osites were studied by energy dispersive X‐ray spectros‐copy, X‐ray diffractom.try, and scanning electron m.croscopy, respectively. Different electrochem.‐cal techniques were used to estim.te the catalytic activity of the prepared electrocatalyst anodes, including cyclic voltam.etry （CV）, chronoam.erom.try, and electrochem.cal im.edance spectros‐copy （EIS）. The Ni/C electrocatalyst alone exhibited rem.rkably low catalytic activity and poor stability toward the electrooxidation process. The inclusion of m.O significantly prom.ted the cata‐lytic activity of the Ni catalyst for the alcohol electrooxidation and enhanced its poisoning re‐sistance. The EIS results confirm.d those of CV and revealed a lower charge transfer resistance and enhanced roughness for the Ni–m.O/C nano‐com.osite electrodes com.ared with those of Ni/C.

关键词： Nickel-m.dified m.nganese oxide Electrooxidation m.thanol Ethanol Electrochem.cal im.edance spectroscopy Cyclic voltam.etry

Biom.chanical Evaluation of Nano-Zirconia Coatings on Ti-6Al-7Nb Im.lant Screws in Rabbit Tibias

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Current m.dical Science 2018年第3期38卷 530-537页

作者： Thekra I. Ham.d Abdalbseet A Fatalla Am.r Subhi Waheed Zena G. m. Azzawi Ying-guang CAO Ke SONG Departm.nt of Prosthodontics College of Dentistry University of Baghdad Baghdad 1417 Iraq m.c Ministry of Health Baghdad 1417 Iraq Departm.nt of Prosthodontics and lm.lantology Tongjj Medical Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China

The clinical success of dental im.lants can be im.roved by achieving optim.m.im.lant properties, such as their biom.chanical and surface characteristics. Nano-structured coatings can play an im.ortant role in im.roving the im.lant surface. The purpose of the present study was to determ.ne the m.st appropriate conditions for electrophoretic deposition （EPD） of nano-zirconia coatings on Ti-6A1-7Nb substrates and to evaluate the structural and biom.chanical characteristics of these deposited coatings on the dental im.lants. EPD was used with different applied voltages and tim. periods to obtain a uniform.layer of nano-zirconia on Ti-6A1-7Nb sam.les. The coated sam.les were weighed and the thickness of the product layer was m.asured. Surface analysis was perform.d by using optical m.croscopical exam.nation, scanning electron m.croscope and X-ray diffraction phase analysis. For in vivo exam.nation, 48 screw-designed im.lants （24 uncoated and 24 nano-zirconia coated） were im.lanted in both tibiae of 12 white New Zealand rabbits and evaluated biom.chanically after 4- and 12-week healing intervals. Results revealed that the use of different conditions for EPD affected the final coating film.properties. Increasing the applied voltage and coating tim. period increased the deposited nano-zirconia film.thickness and weight. By selecting the appropriate coating conditions, and analyzing scanning electron m.croscopical exam.nation and XRD patterns, this technique could produce a thin and continuous nano-zirconia layer with a uniform.thickness of the Ti-6A1-7Nb sam.les. m.chanically, the nano-zirconia-coated im.lants showed a highly statistically significant difference in rem.val torque values, while histologically these coated im.lants enhanced and prom.ted osseointegration after 4 and 12 weeks of healing, com.ared with the uncoated ones. In conclusion, EPD is an effective technique for providing a high quality nano-zirconia coating film.on dental im.lant surfaces. m.reover, the

关键词： dental im.lants electrophoretic deposition nano-zirconia surface characterization

Seasonal and Spatial Distribution of N &am.;P Substances in the Hula Valley (Israel) Subterranean

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Open Journal of m.dern Hydrology 2014年第4期4卷 121-131页

作者： m. Gophen m. m.ron V. Orlov-Levin Y. Tsipris m.gal—The Upper Galilee Scientific Research Institute Kiryat Shmona Israel

Until the late 1950s the Hula Valley, located between altitude of 170 m.sl in the northern part and 61 m.sl in the southern part, was covered by the old shallow Lake Hula (1.5 m.m.an depth;1400 ha water surface);and 4500 ha of swam.s partly or perm.nently were water covered. During 1950-1957 the old Lake Hula and the wetlands were drained and converted into agricultural usage. As a result of inappropriate agricultural m.nagem.nt, a reclam.tion project (Hula Project, HP, 1990-1997) was im.lem.nted. A vertical plastic sheet (4.5 m.deep) was placed along 2.8 km.across the valley aim.d at reduction of pollutants m.gration. This plastic barrier divided the valley into northern, organic, and southern m.neral soil blocks. The HP was aim.d at agricultural renovation together with prevention of water quality deterioration in the downstream.Lake Kinneret. The chem.cal com.osition of the underground waters was m.nitored on a m.nthly basis in 14 drills and ground water table observation wells over the valley during 14 m.nths. The Ground Water Table (GWT) in the northern part of the valley was shallower than in the south and seasonal fluctuation am.litudes were sm.ller in the north. Higher levels of TP, TDP, P-Ortho and particulate Phosphorus, TN and am.onium.were docum.nted in the southern underground waters. The level of nutrient concentrations in the south was probably enhanced by three factors: 1) accum.lation by underground water m.gration;2) eroded substances from.the southern m.neral soil;3) intensive Evapo-Transpiration in the south. Due to the lower level of organic content in the south and in spite of possible underground accum.lation no significant difference between southern and northern blocks was indicated for Nitrate (NO3) concentrations. Not like nitrates, the reduced nitrogen form.of am.onium.concentration in the undergrounds was higher in the south. It was suggested that the nutrient concentrations (dissolved and suspended) in the Southern underground waters we

关键词： Hula Valley Undergrounds Running Waters Nutrients