In preterm infants, hypocoagulation is observed, which is most pronounced in deeply premature infants. The main mechanisms and stages of coagulation reflect ontogenetic differences in the formation of the coagulation system, when the hypocoagulation orientation of the indicators decreases significantly after the 32nd week of gestation. In newborns with a gestational age of up to 32 weeks, the intensity of plasma hemostasis is revealed, which may be due to the intensity of hemostasis and the variability of its components. In the dynamics of the early neonatal period, preterm infants did not show any coagulation changes in the APTTV and TV tests, and the test scores of external coagulation mechanisms were most reduced in the first days of life
Liver cirrhosis is associated with numerous cardiovascular disorders. They include increased heart function and lower blood pressure and total peripheral vascular resistance. In these patients, despite an increase in the work of the heart, systolic and diastolic function deteriorates in the framework of pharmacological, physiological and surgical stresses, as well as the electrical activity of the myocardium, most often in the form of lengthening the QT interval. These deviations are combined into the concept of cirrhotic cardiomyopathy. It is believed that cirrhotic cardiomyopathy contributes to the cardiac dysfunction that is seen in patients with intrahepatic portosystemic stent shunts and liver transplants. Insufficient contractile function of the heart may play a role in the pathogenesis of hepatorenal syndrome, which rapidly leads to spontaneous bacterial peritonitis.
It is known that fruits grown in a year without the republic will contain up to 60% fat in cheeks, apricots, peaches, cherries, plums and other fruits. Thanks to this development, the design of a device has been developed that can be used for industrial and domestic purposes for biting off nuts, apricot kernels and almonds, the shell of which has different shapes and physical and mechanical properties, which allows you to maintain the integrity of the crushed kernel and increase productivity.
The flow model of the crushing and crushing equipment is important because it allows the stone material to slide down through the crushing chamber. The crushing or crushing characteristics were achieved by testing the rock based on spring compression during crushing under controlled conditions. The input data (CSS) includes parameters such as speed, stroke, camera geometry, distribution of transmission values and mechanical properties of the material. The performance of a traditional cone crusher, which shows the performance for ore of various products. The nominal design of the conical crushing and crushing equipment is made. At this stage, it is possible to calculate a set of nominal parameters characterizing the chopper chamber. The nominal stroke and layer thickness are determined at each point of the chamber cross section. The same material was used in modeling and field tests. After each compression test, the material was screened. Distribution of the sizes received at each check. A selection function with two variables adapted to experimental data. b) functional representation in 3D. Normalized crushing of the porphyry material under study. b) the crushing properties of quartz and porphyrite were compared.
The aim of the study is to develop a new design of a self-regulating water heat accumulator with temperature stratification of water, which excludes mixing of heating and heated coolants entering the accumulator from the charging and discharging circuits based on the natural stratification of water in the tank under the influence of volumetric (Archimedean) forces under conditions of forced circulation of the coolant.
Based on the analysis of the world experience in the development of designs of water heat accumulators with temperature stratification of water and the stability of the stratified (stratified) flow of the coolant in the volume of the accumulator, a new design of a self-regulating water accumulator is proposed.
The advantages of using self-regulating stratification water heat accumulators in solar heat supply systems are considered. It is shown that the use of stratification for short-term and long-term thermal accumulation leads to an increase in the use of solar heat by 15-20% compared to batteries with completely mixing water. In hot water systems, these batteries can provide earlier preparation of hot water with the required temperature for consumers.