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Homomorphisms between JC~*-algebras and Lie C(?)-algebras

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Acta Mathematica Sinica,English Series 2005年第6期21卷 1391-1398页

作者： Chun gil PARK Jin Chuan HOU Sei Qwon OH Department of Mathematics Chungnam National University Daejeon 305 764 South Korea Department of Mathematics Shanxi Teachers University Linfen 041004 P. R. China Department of Mathematics Shanxi University Taiyuan 030006 P. R. China

It is shown that every almost ＊-homomorphism h ： A→B of a unital JC＊-algebra A to a unital JC＊-algebra B is a ＊-homomorphism when h（rx） = rh（x）（r 〉 1） for all x∈A, and that every almost linear mapping h ： A→B is a ＊-homomorphism when h（2^nu o y） - h（2^nu） o h（y）, h（3^nu o y） - h（3^nu） o h（y） or h（q^nu o y） = h（q^nu） o h（y） for all unitaries u ∈A, all y ∈A, and n = 0, 1,.... Here the numbers 2, 3, q depend on the functional equations given in the almost linear mappings. We prove that every almost ＊-homomorphism h ： A→B of a unital Lie C＊-algebra A to a unital Lie C＊-algebra B is a ＊-homomorphism when h（rx） = rh（x）（r 〉 1） for all x ∈A.

关键词： *-homomorphism JC*-algbera Lie C*-algebra Stability Linear functional equation

Influence of undissolved second-phase particles on dynamic recrystallization behavior of Mg–7Sn–1Al–1Zn alloy during low-and high-temperature extrusions

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Journal of Materials Science & Technology 2021年第12期71卷 87-97页

作者： Hyun Ji Kim Sang-Cheol Jin Jae-gil Jung Sung Hyuk Park School of Materials Science and Engineering Kyungpook National UniversityDaegu41566Republic of Korea Implementation Research Division Korea Institute of Materials ScienceChangwon51508Republic of Korea

This study investigates the effects of fine and coarse undissolved particles in a billet of the Mg–7 Sn–1 Al–1 Zn(TAZ711)alloy on the dynamic recrystallization(DRX)behavior during hot extrusion at low and high temperatures and the resultant microstructure and mechanical properties of the *** this end,partially homogenized(PH)and fully homogenized(FH)billets are extruded at temperatures of250 and 450°*** PH billet contains fine and coarse undissolved Mg_(2) Sn particles in the interdendritic region and along the grain boundaries,*** fine particles(<1μm in size)retard DRX during extrusion at 250°C via the Zener pinning effect,and this retardation causes a decrease in the area fraction of dynamically recrystallized(DRXed)grains of the extruded *** addition,the inhomogeneous distribution of fine particles in the PH billet leads to the formation of a bimodal DRXed grain structure with excessively grown grains in particle-scarce *** contrast,in the FH billet,numerous nanosized Mg_(2) Sn precipitates are formed throughout the material during extrusion at 250°C,which,in turn,leads to the formation of small,uniform DRXed grains by the grain-boundary pinning effect of the *** the PH billet is extruded at the high temperature of 450°C,the retardation effect of the fine particles on DRX is weakened by their dissolution in theα-Mg matrix and the increased extent of thermally activated grain-boundary *** contrast,the coarse Mg_(2) Sn particles in the billet promote DRX during extrusion through the particle-stimulated nucleation phenomenon,which results in an increase in the area fraction of DRXed *** both low and high extrusion temperatures,the extruded material fabricated using the PH billet,which contains both fine and coarse undissolved particles,has a lower tensile strength than that fabricated using the FH billet,which is virtually devoid of second-phase *** lower strength of the former is attributed mai

关键词： Mg–Sn alloy Second-phase particle Extrusion Homogenization Dynamic recrystallization

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Cancer Drug Resistance 2023年第4期6卷 838-857页

作者： gil Kozalak Ali Kosar Faculty of Engineering and Natural Science Sabanci UniversityIstanbul 34956Turkey Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics(EFSUN) Sabanci UniversityIstanbul 34956Turkey Turkish Academy of Sciences(TUBA) CankayaAnkara 06700Turkey

Multiple myeloma(MM)is a type of hematological cancer that occurs when B cells become *** drugs such as proteasome inhibitors,immunomodulators,and compounds that cause DNA damage can be used in the treatment of ***,a type 2 cell death mechanism,plays a crucial role in determining the fate of B cells,either promoting their survival or inducing cell ***,autophagy can either facilitate the progression or hinder the treatment of MM *** this review,autophagy mechanisms that may be effective in MM cells were covered and evaluated within the contexts of unfolded protein response(UPR),bone marrow microenvironment(BMME),drug resistance,hypoxia,DNA repair and transcriptional regulation,and *** genes that are effective in each mechanism and research efforts on this subject were discussed in *** pathways targeted by new drugs to benefit from autophagy in MM disease were *** efficacy of drugs that regulate autophagy in MM was examined,and clinical trials on this subject were ***,among the autophagy mechanisms that are effective in MM,the most suitable ones to be used in the treatment were *** importance of 3D models and microfluidic systems for the discovery of new drugs for autophagy and personalized treatment was ***,this review aims to provide a comprehensive overview of MM disease,encompassing autophagy mechanisms,drugs,clinical studies,and further studies.

关键词： Autophagy multiple myeloma unfolded protein response bone marrow microenvironment drug resistance hypoxia DNArepairandtranscriptional regulation apoptosis

Adsorption recovery of Ag(Ⅰ) and Au(Ⅲ) from an electronics industry wastewater on a clay mineral composite

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International Journal of Minerals,Metallurgy and Materials 2019年第6期26卷 673-680页

作者： Youness Rakhila Abdellah Elmchaouri Allal Mestari Sophia Korili Meriem Abouri Antonio gil UniversitéHassan II de Casablanca Facultédes Sciences et TechniquesLaboratoire de Chimie Physique et de Chimie BioorganiqueBP 146Mohammedia 20650Morocco INAMAT-Science Department Los Acebos BuildingPublic University of NavarraCampus of ArrosadiaPamplona E-31006Spain

The aim of this work is to investigate the ability of an adsorbent of a clay mineral composite to remove and recover gold and silver ions from *** composite was prepared by mixing phosphogypsum(PG),obtained from an industrial waste,and a natural clay *** materials were characterized before and after use in adsorption by several *** adsorption experiments were carried out,and the effects of the contact time and the pH and temperature of solution on the removal processes were *** optimum pH for the adsorption was found to be *** adsorption of these metal ions reached equilibrium after 2 h of *** pseudo-first-and the pseudo-second-order kinetic models,as well as the Freundlich and the Langmuir isotherm equations,were considered to describe the adsorption *** maximum adsorbed amount of 85 mg·g^-1 Ag(I)and 108.3 mg·g?1 Au(III)was *** recovery of the adsorbed gold and silver ions from the adsorbent was also *** acids appeared to be the best desorption agents to recover gold and silver *** use of aqua regia gave regeneration rates close to 95.3%and 94.3%for Ag(I)and Au(III),***,the removal of gold and silver ions from an industrial wastewater was tested in batch experiments,and percentage recoveries of 76.5%and 79.9%for Ag(I)and Au(III),respectively,were *** carry out the industrial application of the proposed methodology,an economic viability study is required.

关键词： adsorption clay composite industrial wastewater gold silver

Microstructure and Mechanical Properties of TiB-Containing Al–Zn Binary Alloys

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Journal of Materials Science & Technology 2016年第7期32卷 653-659页

作者： Sang-Soo Shin gil-Yong Yeom Tae-Yang Kwak Ik-Min Park Department of Materials Science and Engineering Pusan National University Busan 609-735 Republic of Korea Liquid Processing & Casting Technology R&BD Group Korea Institute of Industrial Technology Incheon 21999 Republic of Korea

The microstructure and mechanical properties of newly developed Al-35Zn cast alloys with TiB refiner addition were evaluated by X-ray diffractometry, optical microscopy, and scanning electron microscopy coupled with energy dispersive spectrometry. The microstructure of these alloys featured α-Al den- drites surrounded by AI-Zn （α ＋ rI） eutectic structures. After the addition of TiB refiner, the alloy grain sizes decreased, and its morphology abruptly changed from dendritic to equiaxed grains. Such an im- proved microstructure of the modified alloys was accompanied by a significant increase in the tensile strength and elongation percentage compared to those of the AI-Zn or Zn-Al-based alloys. The results showed that with the increase of TiB content up to 0.05%, the morphology of α-Al dendrites and α ＋ T1 phases changed from coarse dendrite and lamellar structures into independent and fine ones. Based on these results, the effect of TiB refiner addition on the microstructure and mechanical properties of the AI-35Zn binary alloys was investigated.

关键词： Al-Zn(-Cu) alloyEutectic structureHigh strengthTiB2

Rescuing agroforestry as strategy for agriculture in Southern Brazil

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Journal of Forestry Research 2016年第4期27卷 739-746页

作者： Alexandre Siminski Karine Louise dos Santos Juliano gil Nunes Wendt Universidade Federal de Santa Catarina Centro de Curitibanos

Knowledge about agricultural ecosystems, as well as about ecological and social interactions that occur in an agricultural context, is essential to promote a balanced environment for production. Incorporating the forest landscape into farming systems has promoted the development of integrated production systems such as agroforestry. However, many aspects of the relationship between farming and the forest landscape have changed since the modernization of agriculture introduced by the Green Revolution. The objectives of this review are：（1） to contribute to the understanding of the changes in cultivation strategies and in the dynamics of agricultural systems,particularly in the context of farming in Santa Catarina State, Brazil;（2） to contribute to the understanding of agroforestry systems as a strategy to reintroduce the element of forestry into agricultural production systems; and（3） to compile a list of forest plant species that could be used in agroforestry. The approach adopted in this manuscript seeks to highlight the potential of agroforestry systems to conserve natural resources and thereby to support agricultural development by connecting environmental conservation with income for farmers.

关键词： agriculture agricultural farming Brazil landscape cultivation modernization highlight income compile

Improvements of model-test method for cavitation-induced pressure fluctuation in marine propeller

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Journal of Hydrodynamics 2013年第4期25卷 599-605页

作者： LEE Jeung-Hoon HAN Jae-Moon PARK Hyung-gil SEO Jong-Soo Samsung Ship Model Basin (SSMB) Marine Research Institute Samsung Heavy Industries Science Town

Although the prediction of propeller cavitation-induced pressure fluctuation strongly depends on the model-scalemeasure- ment in a cavitation tunnel, there is still a lack of correlation with full-scale data. This paper deals with the enhancement of such a correlation deficiency by improving the conventional model-test technique, two majors of which are in the following. One is to take into account the boundary layer effect of wooden fairing plate at the ceiling of water cavitation tunnel. The other is to avoid the reso- nance frequency range of model-ship via adjusting the revolution speed of model propeller. Through a case study, for which both model and full-scale test data are available, the improved method in this study shows its validness, and furthermore a close correla- tion with full scale measurement.

关键词： cavitation boundary layer resonance

Ruled Real Hypersurfaces of A Complex Space Form

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Acta Mathematica Sinica,English Series 1994年第4期10卷 401-409页

作者： Ki, U-Hang Kim, Nam-gil Department of Mathematics Kyungpook University Taegu Korea Department of Mathematics Chosun University Kwangju Korea

The purpose of this paper is to define a ruled real hypersurface of a complex space form M_n(c),c≠0,and to give characterizations of this hypersurface by the infinitesimal affine transformation of the structure vecto... 详细信息

关键词： Math real Ruled Real Hypersurfaces of A Complex Space Form

Application of signal processing techniques to the detection of tip vortex cavitation noise in marine propeller

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Journal of Hydrodynamics 2013年第3期25卷 440-449页

作者： LEE Jeung-Hoon HAN Jae-Moon PARK Hyung-gil SEO Jong-Soo Samsung Ship Model Basin (SSMB) Marine Research Institute Samsung Heavy Industries Science TownDaejeon 305-380 Korea

The tip vortex cavitation and its relevant noise has been the subject of extensive researches up to now. In most cases of experimental approaches, the accurate and objective decision of cavitation inception is primary, which is the main topic of this paper. Although the conventional power spectrum is normally adopted as a signal processing tool for the analysis of cavitation noise, a faithful exploration cannot be made especially for the cavitation inception. Alternatively, the periodic occurrence of bursting noise induced from tip vortex cavitation gives a diagnostic proof that the repeating frequency of the bursting contents can be exploited as an indication of the inception. This study, hence, employed the Short-Time Fourier Transform （STFT） analysis and the Detection of Envelope Modulation On Noise （DEMON） specmma analysis, both which are appropriate for finding such a repeating frequency. Through the acoustical measurement in a water tunnel, the two signal processing techniques show a satisfactory result in detecting the inception of tip vortex cavitation.

关键词： tip vortex cavitation inception Short-Time Fourier Transform (STFT) Detection of Envelope Modulation On Noise(DEMON)