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61.
Aleksander Rutkowski 《Order》1992,9(1):31-42
Let X and Y be fences of size n and m, respectively and n, m be either both even or both odd integers (i.e., |m-n| is an even integer). Let \(r = \left\lfloor {{{(n - 1)} \mathord{\left/ {\vphantom {{(n - 1)} 2}} \right. \kern-0em} 2}} \right\rfloor\) . If 1<n<-m then there are \(a_{n,m} = (m + 1)2^{n - 2} - 2(n - 1)(\begin{array}{*{20}c} {n - 2} \\ r \\ \end{array} )\) of strictly increasing mappings of X to Y. If 1<-m<-n<-2m and s=1/2(n?m) then there are a n,m+b n,m+c n of such mappings, where $$\begin{gathered} b_{n,m} = 8\sum\limits_{i = 0}^{s - 2} {\left( {\begin{array}{*{20}c} {m + 2i + 1} \\ l \\ \end{array} } \right)4^{s - 2 - 1} } \hfill \\ {\text{ }}c_n = \left\{ \begin{gathered} \left( {\begin{array}{*{20}c} {n - 1} \\ {s - 1} \\ \end{array} } \right){\text{ if both }}n,m{\text{ are even;}} \hfill \\ {\text{ 0 if both }}n,m{\text{ are odd}}{\text{.}} \hfill \\ \end{gathered} \right. \hfill \\ \end{gathered} $$ 相似文献
62.
Letn>1. The number of all strictly increasing selfmappings of a 2n-element crown is
. The number of all order-preserving selfmappings of a 2n-element crown is
相似文献
63.
H. Strauβ R. Rutkowski J. Brandštetr I. Sajó 《Journal of Thermal Analysis and Calorimetry》1986,31(2):463-479
Zusammenfassung Die vorliegende Arbeit gibt eingangs einen Überblick von Publikationen, die sich mit der thermochemischen Bestimmung von SiO2 und Al2O3 aus flußsaurer Lösung befassen. Davon ausgehend werden Versuche beschrieben und Ergebnisse diskutiert, die mit konstanten Einwaagen von 700 mg SiO2 und etwa 100 mg Al2O3 aus flußsaurer Lösung und verschiedenen Kombinationen von Injektionsreagenzien erhalten wurden und die auf die Belange der Analyse von gefällten Natriumaluminiumsilicaten abgestimmt waren. Die vorgenommenen Untersuchungen führen zu den Schluß, daß Al2O3 und SiO2 in Natriumaluminiumsilicaten aus flußsaurer Lösung mit der Injektionsreagenskombination SrCl2KCl bestimmt werden sollten.
The first part of the paper gives a review of the literature dealing with thermochemical determinations of SiO2 and Al2O3 in hydrofluoric acid solution. The results of experiments with constant samples weights of 700 mg SiO2 and about 100 mg Al2O3 in hydrofluoric acid solution with differently combined injection reagents are discussed. The determinations were based on the analysis of precipitated sodium aluminium silicates.The investigations revealed that combined SrCl2/KCl solution should be used as injection reagent for determination of the Al2O3 and SiO2 contents of sodium aluminium silicates in hydrofluoric acid. , . , (700 ) ( 100 ) , . . , SrCl2-KCl .相似文献 64.
The surface melting is regarded in terms of the order parameter profiles which characterise phases extended inside a whole sample. The characterisation of the phase is, however, due to the order parameter behavior at the surface. The phase really observed is predicted by means of the thermodynamic conditions; thus, the surface melting phase is in competition to the softening modes at the surface. The presented idea is based on the discussion concerning the possible results of the leading theories, a modified van der Waals approach and an Ising type model for pseudospins. The experimental evidence is reviewed and interpreted. 相似文献
65.
Optics and Spectroscopy - The IR absorption spectra of solutions of mixtures of halothane (C2HBrClF3) and trimethylamine ((CD3)3N) in liquefied krypton were obtained and analyzed. Bands assigned to... 相似文献
66.
Amany M. Ghanim David W. Knight Piotr M. Rutkowski Nermine A. Osman Hanan A. Abdel-Fattah Azza M. Kadry 《Tetrahedron letters》2017,58(4):294-297
Carbenium ions generated from substituted benzhydryls using acid catalysis undergo smooth intramolecular trapping by pendant sulfonamide groups to provide excellent yields of 1-aryltetrahydroisoquinolines. 相似文献
67.
68.
P. Rutkowski L. Stobierski G. Górny 《Journal of Thermal Analysis and Calorimetry》2014,116(1):321-328
This study concerns new Si3N4–graphene composites manufactured using the hot-pressing method. Because of future applications of silicon nitride for cutting tools or specific parts of various devices having contact with high temperatures there is a need to find a ceramic composite material with good mechanical and especially thermal properties. Excellent thermal properties in the major directions are characteristic of graphene. In this study, the graphene phase is added to the silicon nitride phase in a quantity of up to 10 mass%, and the materials are sintered under uniaxial pressure. The mixture of AlN and Y2O3 is added as sintering activator to the composite matrix. The studies focus on thermal stability of produced composites in argon and air conditions up to the temperature of 1,000 °C. The research also concerns the influence of applied uniaxial pressure during the sintering process on the orientation of graphene nanoparticles in the Si3N4 matrix. The study also presents research on anisotropy of thermal diffusivity and following thermal conductivity of ceramic matrix composites versus the increasing graphene quantity. Most of the presented results have not been published in the literature yet. 相似文献
69.
70.
Marek Rutkowski 《Applied Mathematical Finance》2013,20(3):151-163
A term structure model proposed by Flesaker and Hughston (1996a,b) is analysed within the general framework of arbitrage-free term structure modelling. Basic valuation formulae for caps and swaptions are presented. 相似文献
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