Método de cálculo de parâmetros racionais para dispositivos com eixo de rotação horizontal para disseminar fertilizantes minerais e sementes

The article proposes the modeling technique for the uniform distribution of particles by a throwing unit. The material is devoted to the substantiation of rational parameters and operating modes of vertical throwing units to distribute the particles of fertilizers and seeds.El artículo propone la técnica de modelado para la distribución uniforme de partículas por una unidad de lanzamiento. El material está dedicado a la fundamentación de parámetros racionales y modos de operación de unidades de lanzamiento vertical para distribuir las partículas de fertilizantes y semillas. O artigo propõe a técnica de modelagem para a distribuição uniforme de partículas por uma unidade de arremesso. O material é dedicado à comprovação de parâmetros racionais e modos de operação de unidades de arremesso vertical para distribuir as partículas de fertilizantes e sementes

Method for evaluation of oil displacement coefficient based on conventional core analysis

The article is devoted to the problem of evaluation of oil displacement coefficient. Determination of oil displacement coefficient is essential stage for estimation of recoverable reserves, feasibility study of oil recovery factor and control of field development. Complexity of its laboratory determination is caused by labor intensity and duration of a process. When the number of cores is not enough for flow experiments or absent oil recovery factor is evaluated either similarly to neighbor fields or by analytical dependencies that are important to obtain. During the generalization and analysis of a significant amount of experimental data the authors developed a method for estimation of oil displacement coefficient without its laboratory determination. A proposed method is based on use of data from previous studies to built statistical models for estimation of displacement coefficient using linear step-by-step regression and discriminant analysis. In order to implement the method along with oil viscosity, knowledge of reservoir parameters such as porosity, permeability, irreducible water saturation and bulk density of a rock, determined by conventional core studies, is required. The main stages of implementation of the method for Visean clastic deposits of the Bashkir arch and Solikamsk depression of the Perm Region are presented. Results of implementation of the method for Bashkir carbonate deposits of the indicated tectonic elements are presented as well. Analysis of initial data allow establishing that there are classes of values for which regression equations are statistically justified. According to the equations model and experimental values of the displacement coefficients are very close to each other. It was concluded based on parameters of the equations that there is abnormal influence of initial oil saturation on the displacement coefficient. It is shown that for reservoirs of low flow characteristics a displacement coefficient is determined by their capacitive properties

ПРИМЕНЕНИЕ БИОКОМПОЗИТА «ЛИТАР» ДЛЯ ЛИКВИДАЦИИ ОСТАТОЧНЫХ ПОЛОСТЕЙ ПЕЧЕНИ В УСЛОВИЯХ ЭКСПЕРИМЕНТА

Experimental-histological justification for the use of composite material «LitAr» in combination with oxytocin has done to replace residual cavities in liver for optimal terms of regeneration. The data on the optimization of epithelial connective tissue relations that in the proliferative phase creates preconditions for elimination of defect regenerate tissue-specific parenchymatous elements of the liver. In series with the addition of oxytocin residual cavity liver is filled organotypic tissue elements of the regenerate more quickly.Проведено экспериментально-гистологическое обоснование применения композитного материала «ЛитАр» в сочетании с окситоцином для замещения остаточных полостей печени и для обеспечения оптимальных условий регенерации. Получены данные об оптимизации эпителиально-соединительнотканных взаимоотношений, что в пролиферативную фазу создает предпосылки для замещения дефекта тканеспецифическим регенератом паренхиматозных элементов печени. В сериях с добавлением окситоцина остаточная полость печени заполняется тканевыми элементами органотипического регенерата в более короткие сроки.

USE OF BIOCOMPOSITE «LITAR» TO ELIMINATE RESIDUAL LIVER CAVITIES IN CONDITIONS OF THE EXPERIMENT

Experimental-histological justification for the use of composite material «LitAr» in combination with oxytocin has done to replace residual cavities in liver for optimal terms of regeneration. The data on the optimization of epithelial connective tissue relations that in the proliferative phase creates preconditions for elimination of defect regenerate tissue-specific parenchymatous elements of the liver. In series with the addition of oxytocin residual cavity liver is filled organotypic tissue elements of the regenerate more quickly

ESTIMATION OF THE QUALITY OF SEGMENTATION OF THE OPTICAL-ELECTRONIC IMAGE, BY ASSESSING THE COMPLEX INDICATORS AND KULBAK-LEIBNER DISTANCE

Проаналізовані відомі показники якості сегментування оптико-електронних зображень. Проведені оцінки комплексних показників якості сегментування оптико-електронного зображення, що отримане з борту літального апарату. Запропоновано для оцінки якості сегментування використовувати інформаційний показник – відстань Кульбака-Лейбнера. Проведені розрахунки відстані Кульбака-Лейбнера при використанні еволюційного методу сегментування оптико-електронного зображення та зміни масштабу вихідного зображення.Проанализированы известные показатели качества сегментации оптико-электронных изображений. Проведена оценка комплексных показателей качества сегментации оптико-электронного изображения, полученного с борта летательного аппарата. Предложено для оценки качества сегментации использовать информационный показатель – расстояние Кульбака-Лейбнера. Проведены расчеты расстояния Кульбака-Лейбнера при использовании эволюционного метода сегментации оптико-электронного изображения и изменении масштаба исходного изображения.The known quality indicators of the segmentation of optical-electronic images are analyzed. The estimation of complex indicators of segmentation quality of the optoelectronic image obtained from the aircraft side was carried out. It was proposed to use the information indicator - Kulbak-Leibner distance - to evaluate segmentation quality. Calculations of the Kulbak-Leibner distance are made using the evolutionary method of segmentation of the optoelectronic image and the scale of the original image