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991.
Joan J. Soldevila-Barreda Andrea Pettenuzzo Maria Azmanova Laia Rafols Amr A. A. Attia Alexandru Lupan Luca Ronconi Nicolas P. E. Barry Anaïs Pitto-Barry 《Helvetica chimica acta》2023,106(8):e202300064
The synthesis by transmetallation and in-depth characterisation by IR spectroscopy of five half-sandwich ruthenium and osmium dithiocarbamato isonipecotamide glycoconjugate complexes are presented herein. The evaluation of their in vitro cytotoxicity and of the zinc precursors’ in vitro cytotoxicity towards ovarian cancer (A2780 and A2780cisR) and normal prostate (PNT2) cells is reported. While the cytotoxicity of the compounds is rather limited, some selectivity is observed. 相似文献
992.
(n × 1) reconstructions and facetting of the (1 1 0) polar surface of SrTiO3 are studied by means of a combination of shell model and density functional calculations. The polarity compensation can be achieved through the formation of {1 0 0} nano-facets, which play a crucial role in the reconstruction process. The behaviors of various possible terminations (Sr, Ti, and O) are analyzed, as well as their atomic structure and energetics. Their stability in different chemical environments is discussed, with respect to previous formulations and experimental results. The Sr-terminated surface tends to expose large facets, while the TiO and O terminations are marginally stabilized or even destabilized by (n × 1) reconstructions, respectively. Trend to facetting results from a subtle competition between the thermodynamic stability of the ideal non stoichiometric (n × 1) surfaces, and huge atomic relaxations that contribute to the lowering of the surface energy differently for each termination. 相似文献
993.
真彩色彩虹全息图图像合成技术 总被引:3,自引:0,他引:3
介绍了真彩色虹全息图图像的合成技术,讨论了合成的记录光路和两个物体的相对位置随H1的记录光波长而变化所应满足的关系,以防止两个物体的再现像因错位而发生互相干扰的现象。 相似文献
994.
995.
利用对称空间的对偶性,本文建立局部强凸对称等仿射球之集与某复空间形式中的极小对称Lagrange子流形之集间的对应关系,在自然定义的等价意义下,这是一一对应关系.作为这种对应关系的直接应用,本文用完全不同的方法重新证明胡泽军等人最近建立的一个重要定理.该定理对具有平行Fubini-Pick形式的局部强凸等仿射球进行了完全分类. 相似文献
996.
ZHANG Qiuying LI Fadong LIU Mengy SONG Xianfang OU Guoqiang 《武汉大学学报:自然科学英文版》2006,11(4):870-874
In order to understand the effect of different land use on soil physics and nutrients properties of the debris flow bottomland, a case study at Daqing gully (in Xiaojiang Basin, Yunnan) was conducted in 2004. Soil samples were taken at depth of 0-10,10-20,20-40,40-60,60-80 cm under three land use patterns crop bottomland (CL), forest bottomland (FL), and barren bottomland(BL). The results showed that the developing bottomland to CL promoted soil toaccumulate total phosphorus (TP) and available phosphorus (AP), pH value transferred from neutral to alkalescency, and organic matter decreased significantly. Furthermore, the contents of total nitrogen (TN) and available nitrogen (AN) in CL were lower than that of FL and BL because the growth of crops consumed more nutrients in soil. The results also showed that the contents of TP, AP and available potassium (AK) in soil were positively correlated with soil particle. 相似文献
997.
通过水热方法合成了2个夹心型磷钼簇基有机-无机杂化化合物(C4H14N3)(C4H15N3)4{Na[Mo6ot5(H2PO4)4]2)·8H2O(化合物1)和{Ni[Mo6O15(H2PO4)4]2}(4,4'-bipy)3·H2O(化合物2,其中4,4'-bipy为4,4'-联吡啶),并对其进行元素分析、红外光谱和... 相似文献
998.
《Mathematische Nachrichten》2017,290(2-3):349-366
In this paper, we give a new characterization for the boundedness of weighted differentiation composition operator from logarithmic Bloch spaces to Bloch‐type spaces and calculate its essential norm in terms of the n‐th power of induced analytic self‐map on the unit disk. From which a sufficient and necessary condition of compactness of this operator follows immediately. 相似文献
999.
ON COMPACT COMPOSITION OPERATORS ON A CLASS OF HOLOMORPHIC FUNCTION SPACES OVER THE UNIT BALL IN C~n
龙素娟 《数学物理学报(B辑英文版)》2011,(4)
In this paper, a general function space X(B n ) over the unit ball in C n with norm · X(Bn) is introduced. It contains all Hardy space, Bergman space, Besov space etc. The author gives a formulation of a compact composition operator on X(B n ), related to works of [8] and [10]. 相似文献
1000.
In this paper, we study some properties of composition operators on Hilbert spaces of Dirichlet series, which include the Fredholmness, Hilbert-Schmidtness, spectra, cyclic and hypercyclic phenomenons, and also answer a norm question raised by Cowen and MacCluer. 相似文献