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101.
We study pseudosymmetric lightlike hypersurfaces of an indefinite Sasakian space form, tangent to the structure vector field. We obtain sufficient conditions for a lightlike hypersurface to be pseudosymmetric, pseudoparallel and Ricci-pseudosymmetric in an indefinite Sasakian space form. We also find certain conditions for a pseudosymmetric lightlike hypersurface of an indefinite Sasakian space form to be totally geodesic and check the effect of Weyl projective pseudosymmetry conditions on the geometry of a lightlike hypersurface of an indefinite Sasakian space form. Moreover we give some physical interpretations of pseudo-symmetry conditions. 相似文献
102.
Periodica Mathematica Hungarica - We introduce sequential warped product submanifolds of Kaehler manifolds, provide examples and establish Chen’s inequality for such submanifolds. The... 相似文献
103.
Kilic Bayram Simsek Esra Bilgin Turkdogan Sunay Demircivi Pelin Tuna Özlem Mucur Selin Pravadili Berek Dusan 《Journal of nanoparticle research》2020,22(2):1-13
Journal of Nanoparticle Research - A comprehensive study of the antibacterial (bacteriostatic and bactericidal) properties of non-doped carbon nanodots (CNDs), nitrogen-doped (N-doped), and... 相似文献
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Ahmad Poursattar Marjani ;Bayram Parsa Habashi ;Hojjatollah Rahchamani ;Jabbar Khalafy ;Alireza Dadrass ;Hooman Yaghoobnejad Asl 《结构化学》2014,(10):1460-1466
A new series of quinoxalinophenazine derivatives were synthesized in good yields by the reaction of 2,3-dibromonaphthalene-1,4-dione with different aryl-1,2-diamines in DMF as solvent at 120~130℃ or under reflux conditions. 3,12-dimethylbenzo[a]quinoxalino[2,3-c] phenazine with bidentate character reacts with mercury(II) bromide to give suitable crystals. All products were confirmed by IR, 1H and 13 C NMR, and the metal complex by single-crystal X-ray method. The crystal(C24H16Br2HgN4, Mr = 720.82) belongs to the triclinic system, space group P1 with a = 10.186(6), b = 10.421(6), c = 11.470(7) , α = 98.670(7), β = 95.069(7), γ = 109.831(7)o, V = 1119.4(12) 3, Z = 2, Dc = 2.139 Mg/m3, μ = 10.46 mm-1, F(000) = 676, R = 0.043 and wR = 0.115 for 3982 observed reflections with I 2σ(I). 相似文献
107.
For practical purposes the calculation of rate constants is not particularly valuable, since their physical significance is not clear. Of greater practical use are metabolic control coefficients and elasticities. Given the definition of the flux control coefficients , concentration control coefficient and elasticity . We can calculate symbolic formulae for these using computer algebra techniques. These are then functions of Vmax, Km, Ki enzyme and concentrations. Having derived estimates of Vmax, Km, Ki using the fitting method we can then calculate values of the control coefficients and elasticities. Furthermore we can calculate the metabolic control parameters using symbolic values for the conventional kinetic parameters. Using these we have verified the summation and connectivity theorems. This is a useful cross check on the reliability of the calculations. 相似文献
108.
In this paper, we introduce real lightlike hypersurfaces of indefinite
quaternion Kaehler manifold. Fundamental properties of real lightlike
hypersurfaces of an indefinite quaternion Kaehler manifold are
investigated. We prove the non existence of real lightlike hypersurfaces
in indefinite qaternionic space form under some conditions.
Received 31 October 2000; revised 20 June 2001. 相似文献
109.
The purpose of the paper is to introduce Stancu‐type linear positive operators generated by Dunkl generalization of exponential function. We present approximation properties with the help of well‐known Korovkin‐type theorem and weighted Korovkin‐type theorem and also acquire the rate of convergence in terms of classical modulus of continuity, the class of Lipschitz functions, Peetre's K‐functional, and second‐order modulus of continuity by Dunkl analogue of Szász operators. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
110.
Melike Bayram Sebastian Gondzik Dieter Bläser Christoph Wölper Stephan Schulz 《无机化学与普通化学杂志》2016,642(15):847-852
Reactions of bis(phosphinimino)methanes H2C(PPh2NR)2 [R = SiMe3 (L1H), Ph (L2H), 2,6‐iPr2‐C6H3 (DIPP) (L3H)] with ZnR2 (R = Me, Et) yielded the corresponding bis(phosphinimino)methanide zinc complexes LZnMe [L2 ( 1 ), L3 ( 2 )] and LZnEt [L1 ( 3 ), L2 ( 4 ), and L3 ( 5 )]. Complexes 1 – 5 were characterized by heteronuclear NMR (1H, 13C, 31P) and IR spectroscopy, elemental analysis, and single‐crystal X‐ray diffraction. 相似文献