133 research outputs found
Cybersecurity issues
No full textAdamenko O. V. Cybersecurity issues / O. V. Adamenko, M. Sloniev // Тиждень науки-2020. Електротехнічний факультет. Тези доповідей науково-практичної конференції, Запоріжжя, 13-17 квітня 2020 р. / Редкол. : В. В. Наумик (відпов. ред.) Електрон. дані. – Запоріжжя : НУ «Запорізька політехніка», 2020. – С. 282-283
The importance of HTTP and HTTPs
No full textAdamenko O. V. The importance of HTTP and HTTPs / O. V. Adamenko, M. Kolesnikova // Тиждень науки-2019. Електротехнічний факультет. Тези доповідей науково-практичної конференції, Запоріжжя, 15-19 квітня 2019 р. / Редкол. : В. В. Наумик (відпов. ред.) Електрон. дані. – Запоріжжя : НУ «Запорізька політехніка», 2019. – С. 317-318
Comparison of robot-assisted and laparoscopic minimally invasive approaches for pancreatic neuroendocrine neoplasms
No full textОптимизация параметров формообразования поверхностей резанием по энергопотребляющим показателям технологического оборудования
Get PDFMrochek Zh. A.; Adamenko V. M.; Adamenko D. V. Optimization of the parameters of surface shaping by cutting according to the energy-consuming parameters of technological equipmentПредложен метод расчета оптимальной скорости резания с учетом энергопотребляющих показателей технологического оборудования, позволяющий обеспечить повышение эффективности использования технологической системы резания с позиции энергетического инжиниринга
Glacial history of the Kuznetsky Alatay Mountains
No full textField investigations showed that the leeward slopes across the Kuznetsky Alatay Mountains (also the windward slopes in the Tigertysh ridge) are intensively eroded by glaciers and represent the classical type of “alpine-type landscape”. Accumulative glacial landforms are developed in all types of glacial valleys. Study of five valleys (the Karatas, the Lower and the Upper Tayzhasu, Perekhodnya, the right source of the Small Kazyr Rivers) showed that four stadial moraine complexes can be identified. These moraines are very different by their morphology. They indicate the change of glaciation from large ancient valley glaciers to modern small cirque and slope glaciers. In this article, the first data are assessed about evolution of glaciers and climate in the Kuznetsky Alatay Mountains from the Last Glacial Maximum of Late Pleistocene (between 26,500 and 19,000–20,000 years BP) to nowadays on the basis of studies of glacial landforms, sedimentology, and biostratigraphy. In the Glacier inventory complied in 1970s-early 1980s, 91 glaciers were recorded in the Kuznetsky Alatay; however, some were erroneously identified as glaciers. The review of the current changes of modern glaciation of the Kuznetsky Alatay is made on the basis of repeated photographs and direct field measurements of 30 glaciers. 18 out of the 30 studied glaciers melted away completely, their area decreased from 1.4 to 0.5–0.3 km2. Not all glaciers strongly degraded. Large cirque glaciers have not changed significantly. Over the past 110 years, the area of perennial snowfields in the Kuznetsky Alatay Mountains had reduced by 90 %. Over the century, the timberline has risen by about 50 m and is currently located at 1220–1200 m a.s.l
Glacial history of the Kuznetsky Alatay Mountains
No full textField investigations showed that the leeward slopes across the Kuznetsky Alatay Mountains (also the windward slopes in the Tigertysh ridge) are intensively eroded by glaciers and represent the classical type of “alpine-type landscape”. Accumulative glacial landforms are developed in all types of glacial valleys. Study of five valleys (the Karatas, the Lower and the Upper Tayzhasu, Perekhodnya, the right source of the Small Kazyr Rivers) showed that four stadial moraine complexes can be identified. These moraines are very different by their morphology. They indicate the change of glaciation from large ancient valley glaciers to modern small cirque and slope glaciers. In this article, the first data are assessed about evolution of glaciers and climate in the Kuznetsky Alatay Mountains from the Last Glacial Maximum of Late Pleistocene (between 26,500 and 19,000–20,000 years BP) to nowadays on the basis of studies of glacial landforms, sedimentology, and biostratigraphy. In the Glacier inventory complied in 1970s-early 1980s, 91 glaciers were recorded in the Kuznetsky Alatay; however, some were erroneously identified as glaciers. The review of the current changes of modern glaciation of the Kuznetsky Alatay is made on the basis of repeated photographs and direct field measurements of 30 glaciers. 18 out of the 30 studied glaciers melted away completely, their area decreased from 1.4 to 0.5–0.3 km2. Not all glaciers strongly degraded. Large cirque glaciers have not changed significantly. Over the past 110 years, the area of perennial snowfields in the Kuznetsky Alatay Mountains had reduced by 90 %. Over the century, the timberline has risen by about 50 m and is currently located at 1220–1200 m a.s.l
Internal pressure measurements in microchannels of different shapes
No full textThis paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute.This paper presents the experimental results of determining friction factors for two microchannels with circular cross-sections: rectilinear and curvilinear. The inner diameter of the channels is 68.9 and 70.3 μm. The Reynolds numbers ranged from 320 to 3215. Pressure measurements are carried out simultaneously in 16 locations along the straight microchannel and in 12 locations for the curved microchannel. The friction factor for the straight microchannel is in good agreement with the theoretical value for the round smooth tubes. For the curved microchannel, the friction factor value of the curved section is less than the reference value for smoothly curved tubes. The Reynolds number for the laminar-turbulent transition in a straight microchannel is 2300–2600. In the curved microchannel the transition is not observed. The length of the developing region was identified, and the inlet minor loss coefficient is calculated.This work was supported by the Siberian Branch of the Russian Academy of Sciences (integration project of SB RAS no. 110)
Bariatric Surgery to Target Obesity in the Renal Transplant Population: Preliminary Experience in a Single Center
No full textDuring the last century, obesity has become a global epidemic. The effect of obesity on renal transplantation may occur in perioperative complications and impairment of organ function. Obese patients have metabolic derangements that can be exacerbated after transplantation and obesity directly impacts most transplantation outcomes. These recipients are more likely to develop adverse graft events, such as delayed graft function and early graft loss. Furthermore, obesity is synergic to some immunosuppressive agents in triggering diabetes and hypertension. As behavioral weight loss programs show disappointing results in these patients, bariatric surgery has been considered as a means to achieve rapid and long-term weight loss. Up-to-date literature shows laparoscopic bariatric surgery is feasible and safe in transplantation candidates and increases the rate of transplantation eligibility in obese patients with end-stage organ disease. There is no evidence that restrictive procedures modify the absorption of immunosuppressive medications. From 2013 to 2016 we performed six bariatric procedures (sleeve gastrectomy) on obese patients with renal transplantation; mean preoperative body mass index (BMI) was 39.8 kg/m2. No postoperative complication was observed and no change in the immunosuppressive medications regimen was needed. Mean observed estimated weight loss was 27.6%, 44.1%, 74.2%, and 75.9% at 1, 3, 6, and 12 months follow-up, respectively. Our recommendation is to consider patients with BMI >30 kg/m2 as temporarily ineligible for transplantation and as candidates to bariatric surgery if BMI >35 kg/m2. We consider laparoscopic sleeve gastrectomy as a feasible, first-choice procedure in this specific population
Development and Relief of the Baltic Ice Plane in the Terrain Between Gauja and Lielā Jugla Rivers
No full textBakalaura darbs ir veltīts Baltijas ledusezera līdzenumam Gaujas un L. Juglas starpupē. Darbā ir sniegts ieskats par Baltijas ledus ezera līdzenuma nogulumiem un ģeomorfoloģiju. Īpaša uzmanība veltīta senām Baltijas ledusezera krasta līnijām, kuras ir izsekojamas pētāmaja teritorijā un eolām reljefa formām- kāpu grēdām un masīviem.
Lauka novērojumi tika veikti 2005.gada vasarā, apsekojot teritoriju ar mērķi identificēt dažādas reljefa formas.
Pētnieciskajā darbā tika analizēti dati, iegūti no šķērsprofiliem, kuri tika sastādīti, izmantojot topogrāfiskās kartes M 1:10 000. Darbs tika veikts Baltijas ledusezera seno krasta līniju noteikšanai.
Pētnieciskā darba otrā daļa ir saistīta ar lielāko kāpu grēdu un masīvu izdalīšanu un to morfometrisko aprakstīšanu, izmantojot datus no topogrāfiskām, ģeomorfoloģiskām un kvartārģeoloģiskām kartēm.
Darbs sastāv no 5 nodaļām. Teksta izklāstu papildina 9 attēli, un 3 pielikumi. Pirmajā nodaļā tiek dots pētījuma teritorijas fizioģeogrāfiskais raksturojums, ka arī īss pētījumu vēstures apskats. Otrā nodaļa ir veltīta Baltijas ledusezera līdzenuma nogulumiem. Trešā nodaļa satur informāciju par teritorijas ģeomorfoloģiju un mūsdienu ģeoloģiskajiem procesiem. Ceturtajā nodaļā autors izklāsta informāciju par pētījumu metodēm un faktu materiāliem. Piektā nodaļa veltīta pētījuma rezultātiem.
Pielikums satur kartogrāfisko materiālu, kur autors izzīmē senās Baltijas ledusezera krasta līnijas (Bgl II un Bgl IIIb) un izdala lielākās kāpu grēdas.
Atslēgas vārdi: Baltijas ledusezera līdzenums, senā krasta līnija, kāpu grēda, kāpu masīvs, paraboliskā kāpa.Baccalaureate work devotes to plain of the Baltic Ice Lake in the terrain between Gauja and Lielā Jugla rivers. In work the review to adjournment and geomorphology of plain of the Baltic glacial lake is given. The special attention in work is given to ancient coastal lines of the Baltic glacial lake which are traced in investigated territory, and also to eolian relief - dune ridges and fields.
In research work the data received as a result of drawing up of cross-section structures were studied, using topographical maps of scale 1: 10 000. Work was spent with the purpose of definition of ancient coastal lines. The second part of research work is connected with allocation of the largest dune ridges and fieldes and morfometrical description of them, using the data received at detailed studying topographical, geomorphological and maps of quaternary sediments of scale 1:50000 .
Work consists of 5 parts. The text 9 figures supplement, and 3 appendix. In the first part it is given the description of territory phusical geography, and also the history of studying is described. The second part is devoted to of the Baltic Ice Lake plain’s sediments. The third part contains information about geomorphology of investigated territory and modern geological processes. In the fourth part of work the author gives the review to methods of research and the used actual material. The fifth part is devoted to results of own researches of the author. Addition contains maps and sharts where the author draws ancient coastal lines of the Baltic glacial lake (Bgl II un Bgl IIIb) and allocates the largest dune ridges.
Keywords: plain of the Baltic ice lake, an ancient coastal line, dune ridge, dune field, parabolic dune
Ocena ekologiczna ryzyka zawodnienia Doliny Dniestrowskiej katastrofalnymi powodziami w granicach kartowanego obszaru "Anniwci"
No full textObject of study - the natural environment and natural processes in the valley of the Dniester River, causing the occurrence of catastrophic floods. Purpose of the study - the relationship and interdependence between the development of catastrophic floods, relief, rainfall showers, waterlogging of soils, deforestation and etc. The purpose of the master's work is to study, develop and implement recommendations to reduce environmental risks flooding the valley of the Dniester within „Annivtsi” to protect the public from catastrophic floods. The scientific novelty of the results is as follows: - first compiled detailed maps of scale 1:10 000 geomorphological, Quaternary deposits and landscape for the Dniester valley, - first developed maps of ecological risk flooding the investigated area, - improved assessment methodology based on geomorphological conditions hypsometric analysis of detailed topographic maps, - were further developed design principles networks geological structures and grounds for the assessment of environmental safety areas. Research is necessary to control the state of the environment, the result of which is the preservation of natural resources, providing favorable living conditions of the population.Об’єкт дослідження - природні умови та природні процеси в долині Дністра, що обумовлюють виникнення катастрофічних паводків. Предмет дослідження - взаємозв’язки та взаємозалежності між розвитком катастрофічних паводків, рельєфом, опадами зливових дощів, перезволоженням ґрунтів, вирубками лісів і та інше. Метою магістерської роботи є обґрунтування, розроблення та впровадження рекомендацій зі зменшення екологічних ризиків затоплення долини р. Дністер в межах планшету “Аннівці” для захисту населення від катастрофічних паводків. Наукова новизна отриманих результатів полягає в наступному: - вперше складені детальні карти масштабу 1:10 000 геоморфологічна, четвертинних відкладів і ландшафтна для долини Дністра; - вперше розроблена карта екологічного ризику затоплення дослідженої території; - удосконалено методологію оцінки геоморфологічних умов на основі гіпсометричного аналізу детальних топографічних карт; - набули подальшого розвитку принципи проектування мережі геологічних профілів і полігонів для оцінки екологічної безпеки територій . Дослідження необхідне для управління станом довкілля, кінцевим результатом чого є збереження природних ресурсів, забезпечення сприятливих умов проживання населення.Объект исследования - природные условия и природные процессы в долине Днестра, обусловливающих возникновение катастрофических паводков. Предмет исследования - взаимосвязи и взаимозависимости между развитием катастрофических паводков, рельефом, осадками ливневых дождей, переувлажнения почвы, вырубками лесов и и прочее. Целью магистерской работы является обоснование, разработка и внедрение рекомендаций по уменьшению экологических рисков затопления долины реки Днестр в пределах планшета "Аннивци" для защиты населения от катастрофических паводков. Научная новизна полученных результатов заключается в следующем: -впервые составлены детальные карты масштаба 1:10 000 геоморфологическая, четвертичных отложений и ландшафтная для долины Днестра; - впервые разработана карта экологического риска затопления исследованной территории; -усовершенствована методология оценки геоморфологических условий на основе гипсометрического анализа детальных топографических карт; -получили дальнейшее развитие принципы проектирования сети геологических профилей и полигонов для оценки экологической безопасности территорий. Исследование необходимо для управления состоянием окружающей среды, конечным результатом чего является сохранение природных ресурсов, обеспечения благоприятных условий проживания населения.prezentacja pracy dyplomowejstreszczeniapraca magistersk
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