Wydział Nauk Ścisłych i Przyrodniczych (WMFT): Recent submissions
Now showing items 521-540 of 932
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Sur quelques problèmes ouverts
(2001)On pose les problèmes au sujet de la raréfaction des ensembles, des prolongements de la mesure de Jordan et des homomorphismes, de la stabilité de l’équation de translation, de la décomposition des fonctions et sur les ... -
Sur les généralisations du wronskien
(2001)En généralisant le wronskien on montre que l’évanouissement de ce wronskien est équivalent à la dépendance linéaire du système des fonc tions. Le théorème analogue est donné pour la décomposition d’une fonc tion $h(x, y)$ ... -
General continuous solution of a nonlinear functional inequality
(2001)In this paper we present theorems on the existence of continuous solutions of the functional inequality (1) in the case where the continuous solution of the corresponding functional equation (2) is not unique. -
Ternary semigroups of linear mappings and matrices
(2001)Following the classical Green’s equivalences we examine, by means of some equivalence relations, the structure of the ternary semigroup of linear mappings. The suitable results for the ternary semigroup of matrices are ... -
Wpływ niestechiometrii na zmiany czasowe i temperaturowe prądu depolaryzacji ceramiki niobianu sodu
(1986)Time and temperature changes of polarisation and depolarisation currents of the $NaNbO_3$ ceramics samples assumed to have correct stoichiometric content and of the samples $NaNbO_3$ having the excess of niobium or sodium ... -
Zjawiska fotoelektryczne w monokryształach BaTiO[3] w obszarze niskotemperaturowych przejść fazowych
(1986)This work concerns ferroelectric phenomena in monocrystals BaTiO[3]. Influence of light illumination on electric conductivity and on phase transition temperature was studied in particular. It was found that illumination ... -
Wpływ stałego pola elektrycznego i magnetycznego na zmiany temperaturowe przenikalności elektrycznej w BaTiO[3]
(1986)Influence of the constant electric field on temperature changes of electric permeability in BaTiO[3] were studied. It was found that the Curie temperature shifts towards higher value and that the value of max decreases ... -
Urządzenie do mierzenia fotoindukowanej luminescencji
(1986)The construction of a simple device for measurements of photoinduced, slowly decaying luminescence from biological samples is described. Construction elements and subsystems available at the domestic market are mainly ... -
Zmiany temperaturowe współczynnika przewodnictwa ciepła niobianu sodu
(1986)Construction of the vacuum thermostat intended for measuring the heat conductivity of ferroelectrics and its temperature changes is presented. The properties of $NaNbO_3$ are studied in order to apply it in building the ... -
Wysokotemperaturowe ciepło właściwe tytanianu boru
(1986)It has been measured the specific heat c[p] of ceramic samples of BaTiO[3] using a cooling method in the temperature range 330-430°K. It found the phase transition at about 392°K what was seen as a peak on the plot c [p]= ... -
Cyfrowy teslomierz hallotronowy
(1986)The block diagram of the digital Hall – effect teslometer intended to the fast determination of magnetic induction is presented and its functioning is described. Its possible application and some characteristics B(x) ... -
Własności elektryczne niestechiometrycznego $NaNbO_3$
(1986)Electric properties of the compound $Na_{1-x}NbO_{3-0.5x}$ for 0<x<0.1 were studied. Influence of $Na_2O$ deficit on the sinter temperature on phase transition on dielectric and semiconducting properties of the ceramic ... -
Planowanie pomiarów i eksponowanie celów ćwiczenia w I pracowni fizycznej
(1986)The role of the emphasis of the aims of the experiment and planning of measurement in didactic process is described. Their positive influence on the level of the student experimental work connected with the increase of ... -
Wpływ pola magnetycznego na własności $BaTiO_3$
(1986)Influence of the constant magnetic field on temperature changes of the dielectric constant and on the electric conductivity of $BaTiO_3$. It was shown for this material that together with the increase of the magnetic ... -
Otrzymywanie i własności optyczne cienkich warstw układu ZnO-SnO[2]
(1986)The amorphous SnO[2]-ZnO thin films were obtained by dc reactive sputtering of alloy targets Zn[x]Sn[1-x]. The atomic ratio (Zn/Sn)[w], was determinated for films prepared from various targets. Optical constants n and k ... -
Wpływ domieszek na własności elektryczne $NaNbO_3$
(1986)Influence of the modifiers Ba, Ca, La and Ti on electric properties of $NaNbO_3$ was studied. Data concerning their influence on electric conductivity, dielectric permeability and Curie point are presented. Dependance ... -
Некоторые вопросы оптимизации организационных структур промышленных предприятии
(1985)Methods of optimization of organisation structures of the plants are nearly the most complex problems of the whole theory of control of large scale systems of technological process. Taking into consideration the complexity ...