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In this paper, we compare the structure and dielectric properties of the samples of barium titanate ceramics that have been sintered at temperatures of 1100, 1150, 1200, 1250 and 1350 °C and dielectric characteristics of the samples of barium titanate (80 vol.%) — barium ferrite (20 vol.%). It is shown that only samples sintered at the temperature of 1250 and 1350 °C have polarization sufficient for the existence of the piezoelectric effect. For the same samples, the pyroelectric coefficient and reversal polarization significantly exceed those for samples sintered at lower temperatures. Analysis of the samples structure confirmed the dependence of the dielectric properties of the barium titanate ceramics on the grain size and, as a consequence, on the sintering temperature. Based on the studies carried out, the optimal temperature (1250 °С) for obtaining composite samples of barium titanate (80 vol.%) — barium ferrite (20 vol.%) was selected. The temperature dependence of the dielectric constant for the composite samples based on barium ferrite — barium titanate with a sintering temperature of 1250 °C is similar to the dependence for the BaTiO3 ceramic samples sintered at 1350 °C. At room temperatures, the permittivity of the composite samples is also significantly higher than that of the barium titanate ceramic samples obtained at the same sintering temperatures. The addition of barium ferrite to the barium titanate not only increased the permittivity of the composite, but also led to a diffusing of the ferroelectric phase transition and a shift in the temperature of the maximum of the dielectric constant by 10 degrees towards high temperatures.

Samples of ceramics based on barium ferrite (FB) and sodium potassium niobate (KNN) are obtained and studied. The elemental composition of the obtained composite is analyzed. A study of pyroelectric properties and magnetic hysteresis loops showed that the composite based on barium ferrite and sodium potassium niobate ceramics obtained in this work had magnetic and ferroelectric properties.

A comparative analysis is performed of temperature waves passing through matter when initiated by a sinusoidally modulated heat flux and a meandering heat flux. An increase in the thermal conductivity of the material in the dynamic mode is shown to reduce the amount of heat passed through the sample.

Молодому, перспективному вченому Євгенію Суслову було лише 32 роки, Молодому, перспективному ученому Евгению Суслову было только 32 года, The young, promising scientist Yevgeny Suslov was only 32 years old

The difference between dynamic and static temperature conductivity for solid-state materials is shown by means of TSWM (Thermal Square Wave Method at a Single Frequency). The study is performed with metallic steel and copper alloys.

Лазеротерапія має особливе місце серед немедикаментозних методів лікування. Важливою характеристикою при такому впливі є оцінка фізіологічного стану людини. В статті наведено основні показники, а саме ступінь кровонаповнення забезпечуючих органи і тканини мікросудини. Метою роботи є підвищення ефективності визначення рівня лазерної чутливості, шляхом аналізу структурних та спектральних характеристик фотоплетизмограми. В результаті досліджень було запропоновано алгоритм проведення процедури, створено математичну модель дослідження, що дозволяє адекватно аналізувати фотоплетизмографічні показники будь-якого характеру. This article is about determination informative indicators of human functional state at laser therapy. Laser therapy occupies a special place among non-drug treatments. An important characteristic of such an impact is to assess the physiological state of man. The aim is to determine the efficiency of laser sensitivity by analyzing the structural and spectral characteristics of photoplethysmogram. The article describes the main indicators, namely the degree of blood supply providing organs and tissues microvessels. For the basic method of research was adopted the photoplethysmography. For separating the minimum point and the incisure point has been proposed use the maximum allowable value of the minimum function value on the basis of empirical analysis photoplethysmogram. As a result of research has been proposed the algorithm of the procedures, created the mathematical model of the studies that can adequately analyze the photoplethysmographic signals any kind. Данная статья посвящена определению информативных показателей функционального состояния (ИПФС) человека при лазеротерапии. В качестве основных показателей были выбраны ступень кровенаполнения микрососудов, обеспечивающих органы и ткани. За основной метод исследования был принят метод фотоплетизмограммы. Были описаны основные характеристики ИПФС. Предложен алгоритм проведения процедуры и алгоритм расчета параметров фотоплетизмограммы. Для отделения точки минимума функции от точки инцизуры предложено использовать максимальное допустимое значение минимума функции, значение которого эмпирически установлено на основе анализа фотоплетизмограмм. В результате была создана математическая модель, которая позволяет адекватно анализировать фотоплетизмографические показатели любого характера.

В статті йдеться про метод та створений прилад лікування рубцевих структур, які утворюються внаслідок хірургічного або травматичного пошкодження поверхні шкіри. At state work about method and develop apparatus for treatment of the scar structure, which state by results of the surgical operation or the traumatic injury of the surface of skin. В статье рассмотрен метод и разработанные приборы для лечения рубцовых структур, которые образуются в результате хирургического или травматического повреждения поверхности кожи.

Eimeria roobroucki n. sp. (Figs 1; 2) MAT��RIEL TYPE. ��� Il n���y a aucun moyen de conserver durablement les oocystes de coccidies; nous d��posons donc une photographie d���oocyste excr��t�� par le lapin n�� 36 LV provenant d���Arjuzanx (MNHN P301 LV). H��TE TYPE. ��� Oryctolagus cuniculus Linn��, 1758. ��TYMOLOGIE. ��� L���esp��ce est d��di��e �� A. Roobrouck qui nous a g��n��reusement aid��s pour la collecte du mat��riel. DISTRIBUTION. ��� L���esp��ce a ��t�� trouv��e en France. DESCRIPTION DE L��� OOCYSTE (FIGS 1; 2) Les oocystes sont ellipso��des avec un l��ger aplatissement du c��t�� du micropyle. Les c��t��s de l���oocyste sont parall��les sur presque toute leur longueur. Les mensurations moyennes sont 55 �� 2,7 ��m de long et 33,7 �� 1,3 ��m de large (mesure de 30 oocystes). La paroi externe est ��paisse, lisse, de couleur brune. Cette paroi fragile se rompt tr��s fr��quemment lors des manipulations. Le micropyle ne pr��sente pas d�����paississement en p��riph��rie et mesure en moyenne 8 ��m. Il n���y a pas de corps r��siduel dans l���oocyste. Les sporocystes sont allong��s. Les corps de Stieda sont minces en croissant et les sous-corps de Stieda forment des demi-disques clairs. Les corps r��siduels dans les sporocystes sont volumineux, irr��guliers plut��t allong��s, et peuvent recouvrir la quasi-totalit�� d���un sporozo��te. DIAGNOSE DIFF��RENTIELLE Nous comparons l���esp��ce avec les coccidies du lapin et du li��vre europ��ens. Les esp��ces d��� Eimeria d��crites chez Oryctolagus cuniculus Linn��, 1758 Les 10 esp��ces d��� Eimeria d��� Oryctolagus r��pertori��es en France par Eckert et al. (1995) et les 12 autres esp��ces mentionn��es par Pellerdy (1974), dans des ��levages de lapins domestiques, ont toutes des oocystes de taille nettement inf��rieure �� celle d��� Eimeria roobroucki n. sp. La plus grande est E. irresidua Kessel & Jankiewicz, 1931 qui est l���esp��ce se rapprochant le plus d��� E. roobroucki n. sp. Elle est comme cette derni��re d��pourvue de corps r��siduel de l���oocyste et la forme g��n��rale �� sub-rectangulaire �� des oocystes se rapproche le plus de celle de notre description. Cependant, elle est nettement plus petite: 38,3 �� 25,6 ��m, selon Pellerdy (1974), 38,4 �� 23,2 ��m selon Norton et al. (1979), 39,2 �� 23,1 ��m selon Eckert et al. (1995). Les esp��ces d��� Eimeria d��crites chez Lepus europaeus Linn��, 1758 Pellerdy (1974) a r��pertori�� 12 esp��ces d��� Eimeria chez le li��vre europ��en. Onze ont des tailles nettement inf��rieures �� notre nouvelle esp��ce; seule E. stefanskii Pastuszko, 1961 est plus grande (59-68 �� 32-37 ��m); elle se diff��rencie d��� E. roobroucki n. sp. par la pr��sence d���un corps r��siduel de l���oocyste et son absence dans les sporocystes. Parmi les esp��ces d��crites plus r��cemment, la plus grande Eimeria parasite du li��vre est E. macrosculpta Sugar, 1978 chez Lepus europaeus. Celle-ci est l���esp��ce morphologiquement la plus proche d��� E. roobroucki n. sp. Son oocyste est d��crit comme cylindrique et sym��trique, ou ovo��de allong��, mesurant 46 �� 26 ��m. Outre la plus petite taille des oocystes et sporocystes, E. macrosculpta se diff��rencie d��� E. roobroucki n. sp. par la pr��sence de granulations sur la paroi externe du premier, la paroi du second ��tant lisse., Published as part of Gr��s, Virginie, Marchandeau, St��phane & Landau, Ir��ne, 2002, Description d'une nouvelle esp��ce d'Eimeria (Coccidia, Eimeridea) chez le lapin de garenne Oryctolagus cuniculus en France, pp. 203-207 in Zoosystema 24 (2) on pages 205-206, DOI: 10.5281/zenodo.5399893, {"references":["ECKERT J., TAYLOR M., CATCHPOLE J., LICOIS D., COUDERT P. & BUCKLAR H. 1995. - Identification of Eimeria species and strains of Rabbits, in ECKERT J., BRAUN R., SHIRLEY M. W. & COUDERT P. (eds), Biotechnology Guidelines on Techniques in Coccidiosis Research. Office for official publications of the european communities Press, Luxembourg: 113 - 119.","PELLERDY L. P. 1974. - Coccidia and Coccidiosis. Akademiai Nyomda Press, Budapest, 408 p.","NORTON C. C., CATCHPOLE J. & JOYNER L. P. 1979. - Redescriptions of Eimeria irresidua Kessel & Jankiewicz, 1931 and E. flavescens Marotel & Guilhon, 1941 from the domestic rabbit. Parasitology 79: 231 - 248."]}

Objective: To review the published clinical data on prophylaxis for thromboembolism in order to develop general guidelines to encourage the establishment of local protocols for management. Data sources: Published papers on thromboembolism over the period 1991-1997 were identified by Medline search and/or from the authors' personal literature collections and reviewed. Study selection: A total of 981 studies were identified. Only those papers reporting randomized studies with clearly defined diagnostic methods and clear end-points were included in this review. Data extraction: The available evidence for each specialty was summarized and reviewed by the authors responsible for each specialty, prior to presentation and discussion of their findings within the group. Where a consensus opinion was achieved in a speciality, general guidelines for thromboprophylaxis were summarized. Where a consensus could not be agreed, recommendations for further work were made. Data synthesis: There is evidence to support the preferred use of low-molecular-weight heparins (LMWHs) over unfractionated heparin (UFH) in orthopaedic surgery, major trauma and general surgery. However, the ideal duration of thromboprophylaxis has yet to be defined. The use of once daily subcutaneous administration of LMWH offers major practical advantages and may have significant cost saving implications. Further work is required to investigate the use of thromboprophylaxis in minimal access surgery, trauma, elective lower limb surgery, hip fracture and pregnancy; to compare the efficacy of LMWH and mechanical prophylaxis; and to investigate extended prophylaxis after discharge. Conclusions: There is overwhelming evidence that thromboembolic prophylaxis reduces the incidence of postoperative deep vein thrombosis and pulmonary embolism. Recommendations concerning the management of these patients when stratified into low, moderate and high risk are made with the suggestion that hospitals develop their own guidelines for the treatment of these patients.

Bekanntlich losen die Reduktionsformen aromatischer Carbonylverbindungen (ACV) eine anionische Polymerisation von Vinylmonomeren aus. Das Vermogen der Reduktionsformen vonACV, den mit ihnen in Wechselwirkung tretenden Molekulen ein Elektron zu ubertragen, wird von der Elektronenaffinitat beider Partner bestimmt. Um Angaben bezuglich der Elektronenaffinitat zu ermitteln, wurden die Potentiale der polarographischen Reduktion gemessen und mit den nach derHuckel-Methode berechneten Energiewerten des niedrigsten antibindenden Molekulorbitals korreliert. Fur eine Reihe strukturell verwandter Verbindungen wurde eine lineare Abhangigkeit zwischen den Halbstufenpotentialen der polarographischen Reduktion und des niedrigsten antibindenden Molekulorbitals gefunden. Die so erhaltene Reihe stimmt mit einer bereits fruher aufgestellten uberein.