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11.
Prus Wojciech Fabia Janusz Dobosz Cezary Szlosarczyk Bernardeta Strzadala Anna Kowalska Teresa 《平面色谱法杂志一现代薄层色谱法》2001,14(5):378-383
JPC – Journal of Planar Chromatography – Modern TLC - In this paper we report our most recent experimental results relating to the thermal instability of selected alkyl chemically... 相似文献
12.
Rajind Mendis Cezary Sydlo Jochen Sigmund Michael Feiginov Peter Meissner Hans L. Hartnagel 《International Journal of Infrared and Millimeter Waves》2005,26(2):201-207
We report on a completely coherent, tunable, continuous-wave THz system where, for the first-time, both the transmitter and receiver are log-periodic-antenna coupled LTG-GaAs based finger-photomixers. This compact room-temperature system exhibits signal-to-noise ratios (> 103) comparable to or better than what is reported in the literature, and has potential applications in high-resolution spectroscopy and imaging. For the purpose of demonstration, we also present results of spectroscopy measurements carried out on fused silica, which are in agreement with previously published THz-TDS measurements. 相似文献
13.
Inta Liepina Paul A. Janmey Cezary Czaplewski Adam Liwo 《Journal of Molecular Structure》2003,630(1-3):309-313
Gelsolin is an actin-severing protein whose action is promoted by Ca2+ ions and inhibited by binding to lipid phosphoinositides incorporated in the inner leaflet of the plasma membrane inner lipid bilayer. In this study, we carried out molecular dynamics (MD) simulations to investigate the influence of calcium cations on the conformation of gelsolin S2 domain. First, gelsolin S2 domain taken from the crystal structure of apo-gelsolin (PDB code: 1D0N) was subjected to three 1100 ps MD simulations in a periodic water box with the
5.0 force field at T=298 K. In the first simulation (S2_Ca2+) excess concentration of Ca2+ was applied, in the second one (S2_phys) the concentration of Ca2+ ions was physiological and in the third one (S2_w) no Ca2+ ions were added. The results of MD simulations showed high conformational flexibility of the N-terminal part of the S2 domain. S2_w deviated from the starting structure considerably more that S2_phys and S2_Ca2+ suggesting that Ca2+ ions stabilize the conformation of the S2 domain of gelsolin. 相似文献
14.
Wojciech J. Kinart Cezary M. Kinart Izabela Tylak 《Journal of organometallic chemistry》1999,590(2):1441-260
The effect of the influence on the increase of polarity of the solvent on the selectivity and rate of metalloene reactions of different allyltin compounds with singlet oxygen, 4-phenyl-1,2,4-triazoline-3,5-dione (TD) and diethyl azodicarboxylate has been studied. 相似文献
15.
16.
Cezary Pietraszuk Bogdan Marciniec Szymon Rogalski Helmut Fischer 《Journal of molecular catalysis. A, Chemical》2005,240(1-2):67-71
Effective homo-metathesis of a series of dichloro-substituted vinylsilanes H2C = C(H)SiCl2R (where R = Me, OSiMe3, C6H5, C6H4–Me-4, C6H4–CF3-4) in the presence of second generation Grubbs catalyst [Cl2(PCy3)(IMesH2)Ru(=CHPh)] (I) and Hoveyda–Grubbs catalyst (II) leads to selective formation of E-1,2-bis(silyl)ethenes and ethene. On the basis of the results of experiments with deuterium-labelled reagents, a metallacarbene mechanism has been suggested for these reactions. 相似文献
17.
Katarzyna Guzow Magda Milewska Cezary Czaplewski Wiesław Wiczk 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2010,75(2):773-781
The structure and spectroscopic properties of 5-methyl-2-(8-quinolinyl)benzoxazole and its complexes with Zn(II) ion were studied using a DFT and TD DFT methods with def2-TZVP basis set. It was shown that the type of functional used (B3-LYP or pbe0) implemented in TURBOMOLE package does not have essential influence on the geometry (small differences in bond length, valence and dihedral angles) of studied compounds in both ground and excited states. However, significant differences were obtained for the position of vertical absorption and emission transition but not for the oscillator strength of transition. Application of pbe0 functional seems to reproduce better the experimental spectrum. 相似文献
18.
Marek Cezary Zdun 《Aequationes Mathematicae》2013,85(1-2):1-15
Let ${U \subset \mathbb{R}^{N}}$ be a neighbourhood of the origin and a function ${F:U\rightarrow U}$ be of class C r , r ≥ 2, F(0) = 0. Denote by F n the n-th iterate of F and let ${0<|s_1|\leq \cdots \leq|s_N| <1 }$ , where ${s_1, \ldots , s_N}$ are the eigenvalues of dF(0). Assume that the Schröder equation ${\varphi(F(x))=S\varphi(x)}$ , where S: = dF(0) has a C 2 solution φ such that dφ(0) = id. If ${\frac{log|s_1|}{log|s_N|} <2 }$ then the sequence {S ?n F n (x)} converges for every point x from the basin of attraction of F to a C 2 solution φ of (1). If ${2\leq\frac{log|s_1|}{log|s_N|} }$ then this sequence can be diverging. In this case we give some sufficient conditions for the convergence and divergence of the sequence {S ?n F n (x)}. Moreover, we show that if F is of class C r and ${r>\big[\frac{log|s_1|}{log|s_N|} \big ]:=p \geq 2}$ then every C r solution of the Schröder equation such that dφ(0) = id is given by the formula $$\begin{array}{ll}\varphi (x)={\lim\limits_{n \rightarrow \infty}} (S^{-n}F^n(x) + {\sum\limits _{k=2}^{p}} S^{-n}L_k (F^n(x))),\end{array}$$ where ${L_k:\mathbb{R}^{N} \rightarrow \mathbb{R}^{N}}$ are some homogeneous polynomials of degree k, which are determined by the differentials d (j) F(0) for 1 < j ≤ p. 相似文献
19.
Nebeluk Robert Zarzycki Krzysztof Seredyński Dawid Chaber Patryk Figat Maksym Domański Paweł D. Zieliński Cezary 《Nonlinear dynamics》2023,111(9):8383-8395
Nonlinear Dynamics - Moving-object tracking using a pan–tilt camera setup is quite a well-known task in robotics. However, the presented research addresses specific properties of the tracked... 相似文献
20.
Marek Cezary Zdun 《Results in Mathematics》1994,26(3-4):403-410
We give a necessary and sufficient condition for conjugacy of disjoint iteration groups of continuous functions defined on open real intervals. Moreover, we determine all homeomorphisms γ such that γ o ?t = g t o γ, t ∈ R, where {?t, t R} and {g1, t ∈ R} are given disjoint iteration groups. 相似文献