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PREPARATION OF Cr-POLYSTYRENE COMPLEX BY METALVAPOR SYNTHESIS

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Chinese Chemical Letters 1996年第7期7卷 679-680页

作者： Wu, sh Zhu, CY Huang, WP NANKAI UNIV DEPT CHEMTIANJIN 300071PEOPLES R CHINA

Chromium atom-hexane solution prepared in a metal atom reactor was transferred into a solution containing polystyrene in diethylene glycol dibutyl ether at -78 degrees C, followed by gently warming the mixture to 0 degrees C to react for two hows, yielding a brown-green solid product Ultraviolet-visible and infrared spectra showed that the product was a bi- (eta(6)-arene) chromium complex.

关键词： Cr PREPARATION OF Cr-POLYSTYRENE COMPLEX BY METALVAPOR SYNTHESIS

Comparison of anti-vascular endothelial growth factors, laser treatments and a combination of the both for treatment of central retinal vein occlusion

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International Journal of Ophthalmology(English edition) 2016年第3期9卷 431-433页

作者： Yoav Y.Pikkel Adi sharabi-nov Itzchak Beiran Joseph Pikkel Tzameret Medical Track Hebrew University Jerusalem 91120 Israel Research Wing Ziv Medical Center Safed Israel and Tel-Hal Academic College Kiryat Shmona 12208 Israel Department of Ophthalmology Rambam Medical Center Haifa 3525408 Israel The B. Rappaport Faculty of Medicine Israel Institute of Technology Haifa 3525427 Israel Departrnent of Ophthalmology Ziv Medical Center Safed 13100 Israel Bar Ilan University Faculty of Medicine Safed 13101 Israel

AIM：To compare changes in visual acuity and macular edema in patients with central retinal vein occlusion（CRVO）treated with intravitreal injections of bevacizumab,macular grid photocoagulation combined with pan retinal photocoagulation（PRP）,or both（bevacizumab＋grid＋PRP）.· METHODS：Our study is a retrospective cohort clinical study that examined patients that suffered from ischemic CRVO with macular *** inclusion criteria were ischemic CRVO with macula edema and the availability of complete medical records for at least 12 mo after *** were patients with diabetes or any other retinal *** reviewed the medical records of patients treated in one ophthalmology departmentcomparing changes in visual acuity and macular edema in patients treated with intravitreal injections of bevacizumab vs those that were treated with macular grid photocoagulation and PRP or *** main outcome measures were the differences in best corrected visual acuity（BCVA） and in macular thickness,as assessed by optical coherence tomography,between the enrollment and the final follow up visits.· RESULTS：Sixty-five patients met inclusion *** were no statistically significant differences among the three groups in the mean changes in macular thickness as measured by ocular coherence tomography（131.5±41.2,108.6±29.2,and 121.1±121.1,P=0.110）,or in visual acuity（0.128±0.077,0.088±0.057,and 0.095±0.065）,for intravitreal injections,macular grid photocoagulation＋PRP and a combination of the treatments,respectively,P =*** proportions of patients with macular edema after treatment were：26.1%,28.6%,and 14.3%,respectively,P=0.499.· CONCLUSION：Similar benefit was observed for intravitreal injections,laser photocoagulation,or a combined regimen in the treatment of CRVO.A nonstatistically significant trend for reduction in macular edema was observed following combined treatment.

关键词： bevacizumab grid laser photocoagulation macular edema optical coherence tomography retinal veinocclusion

Discontinuous Sturm-Liouville Problems Containing Eigenparameter in the Boundary Conditions

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Acta Mathematica Sinica,English Series 2006年第5期22卷 1519-1528页

作者： M.KADAKAL O.sh.MUKHTAROV Ondokuz Mayis University Science and Arts Faculty Department of MathematicsKurupelit 55139 Samsun Turkey Gaziosmanpasa University Science and Arts Faculty Department of MathematicsTokat 60000 Turkey

In this paper, discontinuous Sturm-Liouville problems, which contain eigenvalue parameters both in the equation and in one of the boundary conditions, are investigated. By using an operatortheoretic interpretation we extend some classic results for regular Sturm-Liouville problems and obtain asymptotic approximate formulae for eigenvalues and normalized eigenfunctions. We modify some techniques of [Fulton, C. T., Proc. Roy. Soc. Edin. 77 （A）, 293-308 （1977）], [Walter, J., Math. Z., 133, 301-312 （1973）] and [Titchmarsh, E. C., Eigenfunctions Expansion Associated with Second Order Differential Equations I, 2nd edn., Oxford Univ. Pres, London, 1962], then by using these techniques we obtain asymptotic formulae for eigenelement norms and normalized eigenfunctions.

关键词： Sturm-Liouville problem discontinuous boundary-value problem eigenvalue and eigenfunction eigenelement normalized eigenfunctions

Photoelectrochemical Study of Passive Films on Sensitized Stainless Steel

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Journal of Materials Science & Technology 1996年第5期12卷 381-384页

作者： Du, TB Chen, sh Yang, MZ Chen, L BEIJING UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA

Passive films formed on sensitized stainless steel in sulphuric acid solutions have been studied using photoelectrochemical techniques. The results of the photocurrent measurement indicate that the passive films on sensitized stainless steel are characterised with n-type or p-type semiconductor in different potential regions. The difference in the photoelectrochemical behaviour can be interpreted assuming that the passive film is an iron-chromium oxide solid solution associated with various hydration degrees of the Cr(III)-oxides at various potentials.

关键词： Protective coatings

Lower Bounds for Local Cohomology Modules with Respect to a Pair of Ideals

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Algebra Colloquium 2016年第2期23卷 329-334页

作者： M. Lotfi Parsa sh. Payrovi Faculty of Science Sayyed Jamaleddin Asadabadi University Postal code: 65418-3-5583 Asadabad Iran Department of Mathematics Imam Khomeini International University Postal code: 34149-1-6818 Qazvin Iran

Let R be a Noetherian ring, I and J two ideals of R, M an R-module and t an integer. Let S be a Serre subcategory of the category of R-modules satisfying the co ondition CI, and N be a finitely generated R-module with SuppRN= V（a） for some a ∈ W（I, J）. It is shown that if ExtR^J（N,HI^i,J（M）） ∈ S for all i 〈 t and all j 〈 t - i, then Ha^i（M） ∈ S for all i 〈 t. Let S be the class of all R-modules N with divmR N ≤ k, where k is an integer. It is proved that if Ha^i（M） ∈ S for all i 〈 t and all a ∈ W（I, J）, then HI^i,j（M） ∈ S for all i 〈 t. It follows that inf{i ： HI^i,j（M） S} = inf（inf{i ： Ha^i（M） S）： a ∈W（I,J）}.

关键词： extension functor local cohomology Serre subcategory

The s-Ordered Fock Space Projectors Gained by the General Ordering Theorem

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Chinese Physics Letters 2012年第9期29卷 5-7页

作者： Farid shähandeh Mohammad Reza Bazrafkan Mahmoud Ashrafi Department of Physics Faculty of ScienceI.K.I.UniversityQazvinIran

Employing the general ordering theorem(GOT),operational methods and incomplete 2-D Hermite polynomials,we derive the t-ordered expansion of Fock space *** the result,the general ordered form of the coherent state projectors is *** indeed gives a new integration formula regarding incomplete 2-D Hermite *** addition,the orthogonality relation of the incomplete 2-D Hermite polynomials is derived to resolve Dattoli's failure.

关键词： incomplete ordered Fock

Interaction of a Two-Level Atom with the Morse Potential in the Framework of Jaynes-Cummings Model

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Chinese Physics Letters 2009年第9期26卷 169-172页

作者： M. R. Setare sh. Barzanjeh Department of Science Payame Noor University Bijar Iran Department of Physics Faculty of Science University of Isfahan Hezar Jerib Isfahan Iran

A theoretical study of the dynamical behaviors of the interaction between a two-level atom with a Morse potential in the framework of the Jaynes Cummings model （JCM） is discussed. We show that this system is equivalent to an intensity-dependent coupling between the two-level atom and the non-deformed single-mode radiation field in the presence of an additional nonlinear interaction. We study the dynamical properties of the system such as, atomic population inversion, the probability distribution of cavity-field, the Mandel parameter and atomic dipole squeezing. It is shown how the depth of the Morse potential can be affected by non-classical properties of the system. Moreover, the temporal evolution of the Husimi-distribution function is explored.

关键词： No English Keyword

Deriving some quantum optical identities using the general ordering theorem

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Chinese Physics B 2012年第11期21卷 233-236页

作者： Farid shhandeh Mohammad Reza Bazrafkan Elahe Nahvifard Physics Department Faculty of ScienceImam Khomeini International University

Using the newly introduced general ordering theorem by sh/ihandeh and Bazrafkan, we derive and generalize some quantum optical identities and give their applications.

关键词： s-ordered expansion of operators general ordering theorem

High Preformation SiC-AlN Composites

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Journal of Materials Science & Technology 1997年第4期13卷 342-344页

作者： Chen, ZM Tan, sh Zhang, ZQ Jiang, DL shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

High performance SiC-AlN composites were fabricated by hot-pressing with Y2O3 as additive via liquid phase sintering. The SiC-AlN composites containing 5 vol. pet AIN exhibit superior mechanical properties with flexural strength, fracture toughness and Vickers hardness of 1131 MPa, 6.1 MPa.m(1/2) and 28.6 GPa respectively. Microstructure observations indicate that the grain size of the composites is obviously inhibited due to the formation of solid solution. TEM-EDS analysis demonstrates the existence of the solid solution. In addition, subgrain boundaries induced by dislocations in the matrix SiC grains, seem to divide a large grain into numerous nano-sized small grains, which significantly increase the mechanical properties of the composites.

关键词： Ceramic matrix composites