LATE PLEISTOCENE PROGLACIAL LAKES IN THE SEVERNAYA DVINA RIVER BASIN

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Optimization of varicella treatment in children

Проведены клиническое обследование и анализ медицинской документации 61 ребенка в возрасте от 12 дней жизни до 17 лет, которые были госпитализированы в городскую клиническую инфекционную больницу с диагнозом ветряная оспа. Цель исследования — оценить степень эффективности и безопасности применения Витаферона в комплексном лечении детей, больных ветряной оспой. Была изучена динамика клинических симптомов заболевания — длительность интоксикационного синдрома, лихорадки, интенсивность и характер элементов сыпи, показатели периферической крови у детей. Полученные данные доказали, что препарат Витаферон является эффективным в лечении: улучшает общее состояние детей, сокращает длительность лихорадки, снижает интенсивность и распространенность сыпи на коже и слизистых оболочках, нормализует показатели гемограммы. Во время применения препарата побочных реакций не наблюдалось.The basic group included 31 children with chicken pox. Сhildren of this group were prescribed the basic therapy with Vitaferon in complex treatment. A comparison group was comprised mainly of patients with varicella, from 1 month to 17 years old who had only standart therapy. Including immunobiological substance Vitaferon into a complex therapy of Varicella allows significantly decrease duration of fever and general intoxication, the intensity and widespreading of rash on the skin and mucous membrane, and also to normalize hemogram by 2– 3 days earlier. The advantage of Vitaferon substance is a good tolerability. Undesirable side reactions have not been registered during its usage for the treatment of varicella. The positive therapeutic effect, convenient usage and safety, lack of the side reaction of Vitaferon allows it to be recommended for use in combination therapy of varicella in children

LATE PLEISTOCENE PROGLACIAL LAKES IN THE SEVERNAYA DVINA RIVER BASIN

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The effect of the refractive index contrast on the transmission characteristics of a non-dissipative structure consisting of two identical optical microwaveguides of rectangular cross section

С использованием самосогласованной теории связанных волн исследована структура из двух регулярных идентичных диэлектрических волноводов прямоугольного поперечного сечения. Показано, что с увеличением разницы в показателе преломления волноводов и окружающей среды происходит увеличение длины области связи, при которой вся мощность переизлучается из одного волновода в другой. При этом эта зависимость имеет ярко выраженный локальный минимум, обусловленный влиянием двух конкурирующих процессов: дисперсией групповой скорости, определяемой геометрией структуры, и уменьшением значения интеграла перекрытия взаимодействующих мод. Using the self-consistent coupled-mode theory, the structure of two regular identical dielectric waveguides of rectangular cross section is investigated. It is shown that with increasing in the difference in the refractive indices of the waveguides and the environment, the length of the coupling region increases, at which all power is reemitted from one waveguide to another. At the same time, the obtained dependence has a pronounced local minimum due to the influence of two competing processes: the dispersion of the group velocity determined by the structure geometry, and the decrease in the overlapping integral value of the interacting modes

Investigation of the influence of the geometric and physical parameters on the losses in the optical microwaveguides of rectangular cross section

Аналитически исследовано формирование собственных потерь распространяющихся колебаний в диэлектрических волноводах прямоугольного поперечного сечения. Показано, что в формировании частотной характеристики декремента затухания участвуют два процесса: перераспределение энергии в структуре волновод-окружающая среда и дисперсия групповой скорости. При этом дисперсия групповой скорости, обусловленная геометрией волноведущей структуры, приводит к образованию локального максимума декремента затухания на его частотной характеристике. The formation of the propagating wave insertion losses in the dielectric waveguides of rectangular cross section is analytically studied. It is shown that two processes are involved in the formation of the frequency characteristic of the attenuation constant: the redistribution of energy in the waveguide-environment system and the group velocity dispersion. In this case, the group velocity dispersion determined by the geometry of the waveguiding structure leads to the formation of a local maximum of the attenuation constant in the frequency response

On Issue of IT–Specialists’ Training in Classical Universities

The paper is devoted to the problems of IT-specialists training in Ukrainian universities. It discusses the weights of different knowledge areas in its body of knowledge stemming from the stated in the paper abilities and skills required from modern IT-specialist. The example of curriculum which includes sufficient fundamental mathematical training, covers the core of CC2001 in computer science field and thus provides for all required skills is offered

New evidence of the Vuoksi River origin by geodynamic cataclysm

The territory of investigations is located in the SE periphery of the Fennoscandian Shield. It served as an arena of periodic significant restructuring of the hydrographic network associated with the filling and discharge of large late-glacial and Holocene basins during the degradation of the Scandinavian ice sheet and in postglacial time. One such restructuring is a sudden change of the Saimaa Lake direction of flow in the middle Holocene from the west to south to the Lake Ladoga basin via the drainage hollow, inherited by modern Vuoksi River valley. Origin of the Vuoksi River is associated with the catastrophic water breakthrough of the Saimaa Lake across the marginal ridge Salpausselkä I of about 5.7 cal. kyr BP. This event usually connects with water accumulation and overflow due to non-uniform post-glacial uplift according to modern concepts. The authors propose a great earthquake as the immediate cause of the break waters of Saimaa Lake. This suggestion is based on the study of specific deformations of the rocky riverbed in the area of breakthrough and of the loose deposits in the banks of the Vuoksi River valley downstream. Open cracks and horizontally displaced rock blocks were discovered in the area of the former rapids near town Imatra. Their systematic displacements on the both sides of the rocky gorge indicate the shear kinematics of fault zone. Different types of deformations had occurred in loose sediments of the low terraces (3–4 m) in the Vuoksi River valley and 20–30 km below the headwaters. In three studied stratigraphic sections the three cardinal different types of deformations were discovered: 1) normal fault with vertical displacements, 2) tectonic inclination, and 3) traces of catastrophic mudflow. The time diapason of the terrace forming (and of the corresponding deformations) is determined of 8.3 to 1.8 cal. kyr BP (by the ages of adjacent terrace levels), which corresponds to the origination time of the Vuoksi River. The earthquake, which presumably was a trigger for the formation of the Vuoksi River, was generated by the activation of ancient fault zone, manifested in the crystalline foundation. Periodic post-glacial tectonic activity of this zone is revealed in traces of strong seismic events both in the bedrock (initial emergence of the gorge, its renewal during the breakthrough), and in loose deposits (deformations in different levels of terraces)