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对硫化铜和黄铁矿浮选捕收剂的评价：II.非巯基捕收剂

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国外锡工业 1989年第2期17卷 10-16页

作者： acke.,PK 樊雪萍

维普期刊数据库评论

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维普期刊数据库

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股票期权行权价格的局限与修订研究

中央财经大学学报 2007年第3期 81-84页

作者：聂丽洁尹英西安交通大学管理学院西安710049

股票期权计划在国内外受到广泛关注,并日益成为公司经理人激励的主要手段。但由于我国股票市场的弱式性,以股价为基础的股票期权并不能真正反映经理人的业绩表现。为此,本文引入超额EVA增长率和行业股票价格参数对现行以股票价格为基础... 详细信息

股票期权计划在国内外受到广泛关注,并日益成为公司经理人激励的主要手段。但由于我国股票市场的弱式性,以股价为基础的股票期权并不能真正反映经理人的业绩表现。为此,本文引入超额EVA增长率和行业股票价格参数对现行以股票价格为基础的股票期权行权价格进行修订,以使经理人的激励报酬和业绩贡献变动相结合。与此同时,本文还引入行业分类指数变动率以消除股市波动对行权日行权价格的影响。调整后的行权价格更加真实的反映了经理人的业绩。论文最后指出该方案所具有的优势,认为经过修订的股票期权行权价格在我国更具有现实意义。

关键词：股票期权行权价格超额EVA增长率行业股票价格参数

Leveraging ROtI map derived from Indonesian GNSS receiver network for advancing study of Equatorial Plasma Bubble in Southeast/East Asia

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Earth and Planetary Physics 2025年第1期9卷 101-116页

作者： Prayitno Abadi Ihsan N.Muafiry teguh N.Pratama Angga Y.Putra Suraina Gatot H.Pramono Sidik t.Wibowo Febrylian F.Chabibi Umar A.Ahmad Wildan P.tresna Asnawi Research Center for Climate and Atmosphere Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia School of Electrical Engineering Telkom UniversityBandungIndonesia Directorate of Laboratory Management Facilities and Science and technology Park Indonesian National Research and Innovation Agency(BRIN)PontianakIndonesia Geophysics Laboratory Master Program in PhysicsUniversitas Gadjah Mada(UGM)YogyakartaIndonesia Research Center for Space Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia Indonesian Geospatial Information Agency(BIG) JakartaIndonesia Research Center for Photonics Indonesian National Research and Innovation Agency(BRIN)Tangerang SelatanIndonesia Department of Earth and Planetary Sciences Hokkaido UniversitySapporoJapan

this paper highlights the crucial role of Indonesia’s GNSS receiver network in advancing Equatorial Plasma Bubble(EPB)studies in Southeast and East Asia,as ionospheric irregularities within EPB can disrupt GNSS signals and degrade positioning *** by the Indonesian Geospatial Information Agency(BIG),the Indonesia Continuously Operating Reference Station(Ina-CORS)network comprises over 300 GNSS receivers spanning equatorial to southern low-latitude ***-CORS is uniquely situated to monitor EPB generation,zonal drift,and dissipation across Southeast *** provide a practical tool for EPB research,by sharing two-dimensional rate of total Electron Content(tEC)change index(ROtI)derived from this *** generate ROtI maps with a 10-minute resolution,and samples from May 2024 are publicly available for further scientific *** preliminary findings from the ROtI maps of Ina-CORS are ***,the Ina-CORS ROtI maps reveal that the irregularities within a broader EPB structure persist longer,increasing the potential for these irregularities to migrate farther ***,we demonstrate that combined ROtI maps from Ina-CORS and GNSS receivers in East Asia and Australia can be used to monitor the development of ionospheric irregularities in Southeast and East *** have demonstrated the combined ROtI maps to capture the development of ionospheric irregularities in the Southeast/East Asian sector during the G5 Geomagnetic Storm on May 11,*** observed simultaneous ionospheric irregularities in Japan and Australia,respectively propagating northwestward and southwestward,before midnight,whereas Southeast Asia’s equatorial and low-latitude regions exhibited irregularities *** sharing ROtI maps from Indonesia and integrating them with regional GNSS networks,researchers can conduct comprehensive EPB studies,enhancing the understanding of EPB behavior across Southeast and East Asia and contributing significantly to ionosphe

关键词： Equatorial Plasma Bubble(EPB) GNSS receivers’network Indonesia Continuously Operating Reference Station(Ina-CORS) ionospheric map Rate of tEC change index(ROtI)map

MICROStRUCtURES AND MECHANICAL PROPERtIES OF IN-SItU Al_2O_3/tiAl COMPOSItES BY EXOtHERMIC DISPERSION MEtHOD

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Acta Metallurgica Sinica(English Letters) 2008年第6期21卷 437-443页

作者： t.t. Ai Department of Materials Science and Engineering Shaanxi University of Technology Hanzhong 723003 China

In-situ Al2O3/tiAl composites were fabricated by pressure-assisted exothermic dispersion （PAXD） method from elemental powder mixtures of ti, Al, tiO2, and Nb2O5. the microstructures and mechanical properties of the as-sintered composites are investigated. the results show that the as-sintered products consist of γ-tiAl, α2-ti3Al, Al2O3, and NbAl3 phases. Microstructure analysis indicates that Al2O3 particles tend to disperse on the grain boundaries. Application of a moderate pressure of 35 MPa at 1200℃ yields Al2O3/tiAl composites with fine Al2O3 reinforcement and a discontinuous network linking by Al2O3 particles. the aluminide component has a fine submicron γ ＋α2 lamellar microstructure. With increasing Nb2O5 content, Al2O3 particles are dispersed uniformly in the matrix. the hardness of the composites increases gradually, and the bending strength and fracture toughness of the composites reach to the maximum value, respectively.

关键词： Al2 O3/tiAl composites Microstructure Mechanical properties

Effect of Aluminum on FOX-7 Structure

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火炸药学报 2019年第3期42卷 223-231,I0001页

作者： Lemi türker Middle East technical University Department of Chemistry üniversiteler

the effect of aluminum on FOX-7 structure was considered. Density functional approach at the level of unrestricted B3LYP/6-311++G(d,p) level was adopted. the model considered 1-4 aluminum atoms per FOX-7 molecule. the results show that the molecular geometries as well as many molecular orbital characteristics of FOX-7 molecule are subjected multiplicity of the composites, FOX-7 + n Al ( n =1-4). In the case of n =1-2, some conformational changes occur. In the presence of three aluminum atoms, the quartet state of the composite is stable but in the doublet state, one of the N—O bonds ruptures. As for the n =4 case the singlet and triplet states are stable but in the quintet state one of the N—O bonds cleaves. As the number of aluminum atoms increases, the HOMO-LUMO energy gap decreases generally.

关键词： FOX-7 1,1-diamino-2,2-dinitroethylene DADNE explosives aluminum DFt

Effect of Magnesium Atom on CL-20------A DFt treatment

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火炸药学报 2017年第6期40卷 17-22页

作者： Lemi türker Department of Chemistry Universiteler Middle East Technical University Ankara Turkey 06231

the effect of magnesium atom on 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtizane(HNIW,CL-20)explosive is considered within the constraints of density functional theory at the level of B3LYP/6-31++G(d,p).the Mg atom transfers some electron population to CL-20and one of the nitro groups linked to 6-membered piperazine ring system(base)is expelled in the prenitrite *** total Mulliken charges on the NO2group reveals that the respective nitramine bond in CL-20is the most susceptible one to *** calculated IR and UV-VIS spectra are *** effect of Mg atom on the molecular orbital energies,especially the HOMO and LUMO has been *** of the interfrontier molecular orbital energy gap(Δε)in the composite system ***,the composite system is more susceptible to impact compared to CL-20.

关键词： CL-20 hexanitro hexaazaisowurtizane explosives magnesium density functional theory

Effect of size on biaxial flexural strength for cement-based materials by using a triangular plate method

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Frontiers of Structural and Civil Engineering 2022年第8期16卷 1017-1028页

作者： Hakan t tURKER Department of Civil Engineering Bursa Uludag UniversityBursa 16059Turkey

the effect of size on the biaxial flexural strength(BFS)of Portland cement mortar was investigated by using the recently proposed triangular plate method(tPM).An experimental program was conceived to study the size effect by keeping a constant water-cement ratio of 0.485,cement-sand ratio of 1:2.75,and using unreinforced triangular mortar plates of five different thicknesses and seven different side *** BFS of the produced specimens was tested,and variations of BFS depending on specimen thickness and side length were *** results indicated that increases in triangular plate specimen side length and specimen thickness led to a decrease in the BFS of Portland cement *** effect of specimen length increase on BFS was more significant than on the effect of the specimen *** variations in specimens’thickness indicated a deterministic type I size effect,while the variations in specimens’length showed an energetic-statistical type I size effect.

关键词： testing apparatus&methods plain concrete tensile properties biaxial flexural strength triangular plate method

Interaction of 1,3,3-trinitroazetidine(tNAZ)and Zinc——A DFt treatise

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火炸药学报 2020年第5期43卷 477-483,I0001页

作者： Lemi türker Middle East technical University Department of ChemistryüniversitelerEskisehir Yolu No.106800 ankaya/AnkaraTurkey

In order to investigate whether zinc atom is compatible with 1, 3, 3-trinitroazetidine(tNAZ) structure, tNAZ+Zn and 2 tNAZ+Zn composite systems have been considered within the constraints of density functional theory at the level of B3 LYP/6-31++G(d,p) and ωB97 X-D/6-31++G(D,P). In the case of tNAZ+Zn composite the both level of calculations resulted that one of the C-NO2 bonds of tNAZ undergoes bond cleavage. However, as the zinc content decreases by increasing the tNAZ content, C-NO2 bond elongation considerably decreases, although it is still longer than the similar bonds in 2 tNAZ+Zn composite in which zinc, by weight, is 7.14%. In all the cases the zinc atom acquires positive charge. the results indicate that the interfrontier molecular orbital energy gaps(HOMO-LUMO energy difference) of the composites decrease as the zinc content decreases.

关键词： quantum chemistry 1,3,3-trinitroazetidine tNAZ explosive zinc DFt

Quire Interaction of Certain Nitramine type Explosives with Proton--A DFt Study

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火炸药学报 2017年第1期40卷 1-6页

作者： Lemi türker Department of Chemistry Middle East technical University Ankara Turkey 06231

the composites of certain nitramine type explosives,tEtRYL,RDX and EDNA,with proton in vacuum have been considered within the constraints of density functional theory at the level of B3LYP/6-31++G(d,p)(restricted and unrestricted).the results indicate that unexpectedly hydrogen molecule production occurs by the interaction of proton and a hydrogen of CH3(tEtRYL)and CH2(RDX and EDNA)*** a result,a carbocation is generated on the explosive ***,tEtRYL which potentially has many protonation sites were investigated in more detail in vacuum and aqueous *** data reveals that the composite system(tEtRYL+proton)is less stable than tEtRYL protonated on nitramine NH or oxygen of the nitro groups.

关键词： nitramines tEtRYL RDX EDNA proton DFt