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SILk DYEING IN A MIXTURE OF ACID DYES

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苏州大学学报（工科版） 1992年第S2期17卷 51-57页

作者：三石贤 M. Mitsuishi T. Yagi k. hamada T. Ishiwatari

The equilibrium and kinetic studies for the mixture dyeing of silk with acid dyes have been made. The results of the binary mixture dyeing of silk suggested that so-called”blocking phenomenon”took place in the similar manner to the nylon dyeing. The rate constants of silk dyeing and diffusion coefficient of the dye in silk were obtained. the presence of sodium slkysulfate in the dyeing was found to slow the dyeing rate,but accelerat thedye diffusion.

关键词： silk dyeing mixture dyeing

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波拉型电解质对蚕丝纤维吸附酸性染料的影响

国外纺织技术（纺织针织服装化纤染整） 2000年第4期 11-14页

作者： k.hamada 蔡翔沈煜如

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波拉型电解质对蚕丝纤维吸附酸性染料的影响

国外纺织技术 2000年第4期 11-14页

作者： k.hamada 蔡翔沈煜如

NANOPOROUS MATERIALS BASED ON SPIROkETAL AND SPIROTHIOkETAL POLYMERS FOR SEPARATING METHANOL-TOLUENE MIXTURE

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Chinese Journal of Polymer Science 2011年第4期29卷 450-455页

作者： hamada hamada Abdel-Razik Zeinhom Mohamed El-Bahy Chemistry Department Faculty of Science and Education(Alkhurma Branch)Taif UniversitySaudi Arabia

Organic microporous materials based on spiroketal and spirothioketal polymers were synthesized through 1,3- dioxol-forming polymerization reaction between pentaerythritol or pentaerythritol tetrathiol and different types of cyclohexa- 1,4-dione derivatives. The structure of the prepared polymers was confirmed by NMR spectroscopy and molecular mass measurements. Nitrogen adsorption/desorption isotherms of the prepared polymers show a large amount of nitrogen adsorbed at low relative pressure indicating microporosity. These polymers have Brunauer Emmitt and Teller （BET） surface areas in the range from 492 （m^2g^-1） to 685 （m^2 g^-1）. The prepared polymers were found to be useful for pervaporation separation of methanol-toluene mixture with a separation factor up to 12.5 and fluxes, varying between 6.7×10-3 kg/（m^2 h） and 13.4 × 10^-3 kg/（m^2 h）.

关键词： Spiroketal polymers Nanoporous materials Separation membranes.

Bloch-type spaces and extended Cesàro operators in the unit ball of a complex Banach space

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Science China Mathematics 2019年第4期62卷 617-628页

作者： Hidetaka hamada Faculty of Science and Engineering Kyushu Sangyo University

Let B be the unit ball of a complex Banach space X. In this paper, we generalize the Bloch-type spaces and the little Bloch-type spaces to the open unit ball B by using the radial derivative. Next, we de?ne an extended Ces`aro operator T_φ with the holomorphic symbol φ and characterize those φ for which T_φ is bounded between the Bloch-type spaces and the little Bloch-type spaces. We also characterize those φ for which T_φ is compact between the Bloch-type spaces and the little Bloch-type spaces under some additional assumption on the symbol φ. When B is the open unit ball of a ?nite dimensional complex Banach space X, this additional assumption is automatically satis?ed.

关键词： Bloch-type space complex Banach space extended Cesaro operator little Bloch-type space

Support points for families of univalent mappings on bounded symmetric domains

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Science China Mathematics 2020年第12期63卷 2379-2398页

作者： Hidetaka hamada Gabriela kohr Faculty of Science and Engineering Kyushu Sangyo UniversityFukuoka 813-8503Japan Faculty of Mathematics and Computer Science Babecs-Bolyai UniversityCluj-Napoca 400084Romania

In this paper,we study some extremal problems for the family Sg^0(BX)of normalized univalent mappings with g-parametric representation on the unit ball BX of an n-dimensional JB*-triple X with r≥2,where r is the rank of X and g is a convex(univalent)function on the unit disc U,which satisfies some natural *** obtain sharp coefficient bounds for the family Sg^0(BX),and examples of bounded support points for various subsets of Sg^0(BX).Our results are generalizations to bounded symmetric domains of known recent results related to support points for families of univalent mappings on the Euclidean unit ball B^n and the unit polydisc U^n in C^*** questions will be also ***,we point out sharp coefficient bounds and bounded support points for the family Sg^0(B^n)and for special compact subsets of Sg^0(B^n),in the case n≥2.

关键词： bounded symmetric domain Carathéodory family g-Loewner chain parametric representation starlike mapping support point

Sharp Growth Theorems and Coefficient Bounds for Starlike Mappings in Several Complex Variables

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Chinese Annals of Mathematics,Series B 2008年第4期29卷 353-368页

作者： Hidetaka hamada Tatsuhiro HONDA Faculty of Engineering kyushu Sangyo University Department of Architectural Engineering Hiroshima Institute of Technology

Let B be the unit ball in a complex Banach space. Let S^＊k＋1（B） be the family of normalized starlike mappings f on B such that z = 0 is a zero of order k ＋ 1 of f（z） - z. The authors obtain sharp growth and cov... 详细信息

关键词： Sharp coefficient bound Sharp covering theorem Sharp growth theorem Starlike mapping Zero of order k

Developed correlations between sound wave velocity and porosity, permeability and mechanical properties of sandstone core samples

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Petroleum Research 2020年第4期5卷 326-338页

作者： Ghareb hamada Veronique Joseph Petroleum Engineering depuroment College of Engineering American University of KurdistanKurdistanlrag Petroleurm Enginering Department Faculty of Engineering University Teknologi PetronasMalaysia

In the evaluation of a petroleum reserve,it is necessary to accurately determine certain petrophysical properties such as porosity and permeability of the reservoir rocks and rock mechanical *** properties are key factors in the reservoir descniption and geomechanical properties are determining parameters in drilling operations and in stimulation and hydraulic fracturing jobs and also the development plans for given *** is more convenient to use homogenous rock samples with nearly constant initial permeability;however,obtaining such cores is very *** this paper a simulated natural and homogeneous compacted sandstone rock with known physical and petrophysical propertie were *** properties of reservoir rocks incude pore size distribution;grain size,cementing material concentration,and confining pressure affect rock porosity and *** wave velocity was measured using an ultra sound tool on different sandstone core *** cor-relations have been developed between sound wave velocity(Vp and Vs)the petrophysical properties mainly porosity and *** correlations have been found between seismic wave ve-locity(Vp,Vs and VpVs)and mechanical parameters namely Young's modulus,shear modulus,bulk modulus and Poison's atio for sandstone core *** study has been carried out on dry core samples and core samples with different water saturations and results showed that there are changes in the correlation between seismic wave velocity and mechanical and ptrophysical properties as function of water saturation change from dry rock to water wet rock.

关键词： Seismic wave Porosity Permeability Mechanical parameters Sand core Samples Water saturation

Linear Gyro-kinetic Response Function for Zonal Flows

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Plasma Science and Technology 2011年第2期13卷 157-161页

作者： T.WATARI Y.hamada National Institute for Fusion Science

A linear response function for zonal flows is obtained by solving the gyro-kinetic equation. This is an extension of a previous work which adopted the method of ＂integrating along particle orbit＂ to solve the drift kinetic equation. The formula derived in this paper is used to calculate the dispersion relation of geodesic acoustic mode, which is then compared with that of the gyro-kinetic analytic formula.

关键词： zonal flow geodesic acoustic mode integrating along particle orbits