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Study on the Photofading of Near-Infrared Absorbing Indolenine Cyanines Dyes

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Chinese Chemical Letters 1996年第12期7卷 1121-1124页

作者： Li, J Chen, P Hu, XJ Zheng, DS okasaki, t Hayami, M CHINESE ACAD SCI INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA NIPPON KANKHO SHIKISO KENKYUSHO OKAYAMA 701JAPAN

the spectroscopic properties and photostability of three near-infrared absorbing indolenine cyanine dyes have been studied. It was found that photofading of cyanine dyes was mainly caused by photooxidation, and their ... 详细信息

关键词： Study on the Photofading of Near-Infrared Absorbing Indolenine Cyanines Dyes

ESR Study on the Photooxidation Mechanism of Near-Infrared Absorbing Benzothiazolone Cyanine Dye

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Chinese Chemical Letters 1997年第8期8卷 711-714页

作者： Li, J Chen, P Zhao, J Zheng, DS okasaki, t Hayami, M ACAD SINICA INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA NIPPON KANKAH SHIKISO KENKYUSHO OKAYAMA 701JAPAN

In this paper, the direct photooxidation mechanism of near-infrared absorbing benzothiazolone cyanine dye has been studied by VIS absorption spectroscopy and Electron Spin Resonance (ESR). the technique of spin trapping has been successfully applied to the detection of the photoinduced formation of singlet oxygen (O-1(2)) and superoxide (O-2(-)). It was reveled that the singlet oxygen and superoxide anion all contributed to the photofading of cyanine dye.

关键词： ESR Study on the Photooxidation Mechanism of Near-Infrared Absorbing Benzothiazolone Cyanine Dye

transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 177-192页

作者： M.NAVEED M.IMRAN t.ASGHAR Z.ABBAS Department of Mathematics Division of Science and TechnologyUniversity of Education Department of Mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAM).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

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Free vibration and transient response of double curved beams connected by intermediate straight beams

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-tALOOKOLAEI H.GHANDVAR E.JUMAEV S.KHAtIR t.CUONG-LE School of Mechanical Engineering Babol Noshirvani University of Technology Department of Mechanical Engineering Faculty of Engineering New Uzbekistan University University of Business and Science Center for Engineering Application and technology Solutions Ho Chi Minh City Open University

this paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. the strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. the curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. Subsequently, the natural frequencies and transient response of the system are determined. the accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANSYS, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

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Prognostic value of post-treatment ^(18)F-FDG PEt/Ct for advanced head and neck cancer after combined intra-arterial chemotherapy and radiotherapy

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Chinese Journal of Cancer Research 2014年第1期26卷 30-37页

作者： Kimiteru Ito Keigo Shimoji Yoko Miyata Kouhei Kamiya Ryogo Minamimoto Kazuo Kubota Momoko okasaki Miyako Morooka Jyunkichi Yokoyama Department of Radiology National Center of Neurology and Psychiatry Department of Radiology Juntendo University Graduate School of Medicine Division of nuclear Medicine International Medical Center of Global Health Department of Otolaryngology Head and Neck SurgeryJuntendo University Graduate School of Medicine

Objective：to clarify the prognostic value of post-treatment 18F-fluorodeoxyglucose （FDG） positron emission tomography （PEt）/computed tomography （Ct） in patients with advanced head and neck squamous cell carcinoma （HNSCC） after combined intra-arterial chemotherapy and radiotherapy （IACR）.Methods：thirty-six patients with HNSCC who underwent IACR were *** period from the end of IACR to the last post-treatment 18F-FDG PEt/Ct examination was 8-12 *** patient-based and lesion-based analyses were used to evaluate the PEt/Ct *** lesion-based analysis,36 regions （12 lesions of recurrences and 24 scars at primary sites） were *** Kaplan-Meier method was used to assess the overall survival （OS） stratified by 18F-FDG uptake or visual interpretation ***：twelve patients with recurrence were identified by six months after *** sensitivity and specificity in the patient-based analysis were 67％（8/12） and 88％（21/24）,*** mean OS was estimated to be 12.1 months （95％ CI,6.3-18.0 months） for the higher maximum standardized uptake value （SUVmax） group （n=7） and 44.6 months （95％ CI,39.9-49.3 months） for the lower SUVmax group （n=29）.OS in the higher SUVmax group （cut-off point,6.1） or positive visual interpretation group was significantly shorter than that in the lower SUVmax or negative visual interpretation group （P＜0.001 and P＜0.05,respectively）.Conclusions：the SUVmax and visual interpretation of HNSCC on post-IACR 18F-FDG PEt/Ct can provide prognostic survival estimates.

关键词： 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PEt)/computed tomography (Ct) head and neck cancer recurrence survival time intra-arterial chemotherapy and radiotherapy (IACR)

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