Space-time transformation sky brightness at a horizontal position of the sun

This report discusses some simulation results of the angular distribution of brightness of the sky in the case of molecular scattering in the atmosphere for the benefit of the study of space-time changes of this distribution during the civil twilight

The formation of the sky brightness with horizon position of the sun

This report discusses some simulation results of the angular distribution of brightness of the sky in the case of molecular scattering in the atmosphere during the civil twilight with solar zenith angles 90 ° - 94 °

Cloud elements detection on the panoramic images of the sky

The paper gives a short overview of methods of cloud detection and sky cloud cover level determination based on panoramic sky images obtained with the wide angle lenses of type «Fisheye»

Image processing of cloud fields based on satellite data

The method is considered of determining the direction of movement of cloud fields based on a series of images of clouds received from open sources

FIVE YEAR OUTCOMES OF CERAMIC-ОN-CERAMIC AND CERAMIC-ОN-POLYETHYLENE BEARINGS IN HIP JOINT REPLACEMENT

In view of the increasing number of hip joint replacement volume there remains the key issue of improving prosthesis survivorship which directly depends on the friction couple. Material and methods. The authors have analyzed five year outcomes of two bearing types (head and insert) used in hip replacement: ceramic-on-ceramic (CoC) in 324 patients and ceramic-on-polyethylene (CoP) in 300 patients. Totally 550 patients were operated in the period starting 2010 till 2014, including 74 patients underwent bilateral hip replacement. The authors divided patients based on gender and also into three age groups: 20-40, 41-60 and 61-80 years old. The largest group comprised 156 women aged 41-60 years (28.4%). Additional grouping of patients was made based on gender, age and bearing diameter.36 mm diameter bearing was characterized of the most frequent use. Functional outcomes were assessed by Harris Hip Score. Statistical analysis was made with Statistica 10 software. Statistical significant was observed at p<0.05.Results.28 mm diameter bearing were rarely (19.5%) applied and mainly in women which is related to need for use of smaller acetabulum components and inability to implant a larger insert.36 mm diameter bearing were used most frequently, CoC articulation of36 mm was used in men in 34% of cases and in women – in 18.12% of cases.40 mm articulations were implanted in women two times less than in men which is related to a smaller diameter of acetabulum in women. Generally, CoC bearings were implanted more often in men which can be explained by a bigger social demand as well as a higher anti-luxation stability of large diameter bearings. Dislocations of implants occurred in 5 (0.91%) patients: in 4 patients with CoP bearingand in one patient with CoC articulation. Four revision procedures (0.64%) were made due to deep periprosthetic infection: two surgeries in each group. Harris Hip Score evaluation in CoC group demonstrated excellent and good outcomes in 99.2% of cases, and in CoP group – in 97.5% of cases.Conclusion. The authors observed no ceramic fractures or acoustic effects during 60 months follow up. It’s reasonable to increase CoC bearing diameter to achieve a better anti-luxation effect. CoC bearing selection should depend on patient’s activity and social demands but not only on the age. Based on study observations the authors forecast a higher survivorship of CoC couple within 15-20 years and expect to prove this conclusion in further studies

Assessment of the prevalence of somatic pathology in women in the gestational period

The purpose of the study is a comparative analysis of the structure of extragenital pathology in primiparous women of different age groups.Цель исследования – сравнительный анализ структуры экстрагенитальной патологии у первородящих женщин разных возрастных групп

Обоснование параметров машинной технологии приготовления органобактериальных удобрений

Questions connected with a solution of a problem of providing plants with nitrogen by means of nitrogen-fixing biological preparations application were considered. Requirements to quality of organo-bacterial fertilizers preparation on the basis of composts and the nitrogen-fixing biological preparations of Extrasol group were stated. Theoretical and experimental researches for justification of possibility of biological products application together with peat-manure composts were conducted. A project of technological process and experimental facilities for organo-bacterial mix preparation with a set quality level of biological product distribution in compost were developed. In the course of experiment the time length of mixing was modified from 1 to 12 min. There were set the values of rotation frequency of a rotor mixer: 40, 60, 80 and 100 rpm. Uniformity of biological product distribution in the mix was estimated by coefficient of a variation of a control element for which sugar beet seeds were used. It was revealed that quality of biopreparation distribution in the compost mass depends on the rotor mixer rotation frequency and time length of mixing. At the constant mixing time with increase in frequency of rotation quality of distribution in the mass of the control element estimated by variation coefficient at first decreases, and then at achievement of the frequency of 65-70 rpm it starts to increase. Quality of distribution is influenced positively also by time length of mixing. With the constant frequency of rotor mixer rotation uniformity of mixing was stabilized after 3-4 min. When facilities loading to 50 kg of mix (49 kg of compost +1 kg of a biological product) the coefficient of a control element variation characterizing distribution quality made 10-13 percent with a frequency of rotation of 65 rpm and time of mixing of 3 min.Рассмотрели вопросы, связанные с решением проблемы обеспечения растений азотом посредством применения азотофиксирующих биопрепаратов. Изложили требования к качеству приготовления органо-бактериальных удобрений на основе компостов и азотофиксирующих биопрепаратов группы Экстрасола. Провели теоретические и экспериментальные исследования по обоснованию возможности применения биопрепаратов совместно с торфо-навозными компостами. Разработали проект технологического процесса и экспериментальную установку для приготовления органо-бактериальной смеси с заданным уровнем качества распределения биопрепарата в компосте. В процессе эксперимента изменяли продолжительность перемешивания от 1 до 12 мин. Установили значения частоты вращения ротора-смесителя: 40, 60, 80 и 100 об/мин. Равномерность распределения биопрепарата в смеси оценивали коэффициентом вариации контрольного элемента, в качестве которого использовали семена сахарной свеклы. Выявили, что качество распределения биопрепарата в массе компоста зависит от частоты вращения ротора-смесителя и времени перемешивания. При фиксированном времени перемешивания с увеличением частоты вращения качество распределения в массе контрольного элемента, оцениваемого коэффициентом вариации, сначала уменьшается, а затем при достижении частоты 65-70 об/мин начинает увеличиваться. На качество распределения положительно влияет также продолжительность перемешивания. При фиксированной частоте вращения ротора-смесителя по истечении 3-4 мин равномерность перемешивания стабилизируется. Определили, что при загрузке в установку до 50 кг смеси (49 кг компоста + 1 кг биопрепарата) коэффициент вариации контрольного элемента, характеризующий качество распределения биопрепарата, составил 10-13 процентов при частоте вращения 65 об/мин и времени перемешивания 3 мин