bluuebunny/crossref_metadata_2025 huggingface dataset:
FUZZY-КОНТРОЛЕР ПІДТРИМАННЯ МІКРОКЛІМАТУ В ПРИМІЩЕННІ ЗА ЗНАЧЕННЯМИ ІНДЕКСУ ДИСКОМФОРТУ
Authors: Новіков П. В. , Степанець О. В. , Саков Р. П.
Published: February 2018

For microclimate control systems is proposed a control algorithm based on maintaining the desired discomfort index using a fuzzy logic controller. To assess the influence of the environment on humans, it is necessary to determine not only the quantitative value of individual microclimate parameters, but also the result of their overall impact on the human body. The existing complex methods of microclimate control are investigated. An approach to determine the index of discomfort has been analyzed. The values of the discomfort index are divided into ranges, depending on the average comfort sensations in the room for a person. The fundamentals of the theory of fuzzy sets are considered. The fuzzy logic controller is synthesized. A database of rules has been developed based on calculated values of the discomfort index. The intelligent system of automatic maintenance of comfortable microclimate conditions in the room is designed. Based on the calculated values of the discomfort index for all possible variants of the temperature values of dry and wet thermometers, a rule base for the fuzzy controller is built. The computer simulation of the obtained microclimate control system in the room is carried out based on the transfer functions of dry and wet thermometers. The results of mathematical modeling showed the effectiveness of using the proposed control algorithm. The control effect is made after processing the aggregated information directly from two sensors, thereby reducing the number of unnecessary inclusions for small fluctuations of each individual parameter. According to the results of modeling it can be noted compliance with the requirements of the received control system to maintain the desired level of discomfort index in the room, the minimum number of actuator inclusions, no overshoot and energy savings.
OVERVIEW OF POPULAR APPROACHES IN CREATING CLIENT-SERVER APPLICATIONS BASED ON SCIENTOMETRICS ONAFTS’ PLATFORM
Authors: Salskyi D. , Kozhukhar A. , Olshevska O. , Povarova N.
Published: February 2018

Most of the currently developed systems are based on the client-server architecture. This architecture is usedeverywhere, from mobile-native development to Web applications.However implementing an application based on this architectural solution requires quite a lot of effort from the softwaredeveloper, and therefore, in order to simplify and speed up the development, certain standard solutions and approachesappeared. This article will discuss the most popular technologies used in the development of Web applications in the context ofenterprise development.Also in this article will be mentioned the project, built on the architecture of "client-server" - ScienceToMetrics.The main theme of this project is the study of science-metric indicators for the structural divisions of the faculty of theOdessa National Academy of Food Technologies. In fact, it is a portal for viewing and editing information on employees, inthe future this portal may be extended to subprojects.In this project, the main idea of this architecture was embodied: decomposition of the application into atomic parts inorder to distribute it to several hardware units of capacity to improve performance. The client is an independent application,which at the same time receives information from an external API-interface through REST-requests. In turn, the backendprovides this API with certain security restrictions on the content provided. The backend for this architecture provides a layerfor the content of the data users, whether it's a database (NoSQL, SQL) or an integration API with external aggregationsystems. To ensure the necessary level of security, JWT (Javascript Web Token) authorization is used, which allows you not tocreate an explicit session between the client and the backend, but allows you to communicate through a token that stores allthe necessary meta-information for this user.
Experience of organizing and management of experimental researches on animals in V.I. Shumakov National Medical Research Center of Transplantology and Artificial Organs
Authors: Shagidulin M. Yu. , Volkova E. A. , Metelsky S. T. , Sevastianov V. I.
Published: February 2018

This review brieﬂ y discusses the experience of organizing and carrying out experimental studies in our center in order to increase the validity of the researches. The rules of organizational and methodological approaches aimed at increasing the suitability of the results of experimental studies are also given. Each research work in which experiments on laboratory animals are supposed to be carried out should be organized, planned and carried out in accordance with national and international ethical standards. Discussion and publication of both planned and conducted experimental work makes it possible to make the research process more open and objective. The experimental investigation is carried out in the following algorithm: the formulation of the problem and the hypothesis on the basis of the literature data; development of the purpose and objectives of the study with adequate methods and selection of equipment; distribution of material to control and trial groups; creation of a plan for monitoring the indicators during the experiment; processing and interpretation of results; preparation of a scientiﬁ c report.
Professor Nikolai Petrovich Sinitsyn (1900–1972) – surgeon, physiologist, experimental transplantologist and cardiac surgeon (to the 50th anniversary of the ﬁ rst heart transplantation to a man)
Authors: Cheremisova D. A. , Kordzaya E. L. , Glyantsev S. P.
Published: February 2018

The article is devoted to the outstanding Soviet scientist, the head of the department of pharmacology of the Gorky Medical Institute (now the Nizhny Novgorod Medical Academy), the honored worker of science, professor N.P. Sinitsyn (1900–1972). His achievements in surgery, physiology, experimental transplantology and experimental cardiac surgery have studied. It is shown that in 1937–1943. N.P. Sinitsyn was ﬁ rst man in the world carried out successful transplantations of an additional and isolated heart to frogs in the thoracic cavity and for the ﬁ rst time in Russia transplanted the dog’s head; in 1940–1955 (with interruptions) he conducted experiments on transplantation of the additional heart in the chest to dogs; in 1955–1956 he invented a way of visual control of cardiac activity of the biological and donor heart per se; in 1956 a model of a «two-headed» frog was created, and in 1959–1979 he conducted experiments on modeling and resection of heart aneurysms, plastic of the ventricles of the heart, stimulation of myocardial regeneration by electric current, studied regeneration of cardiac and papillary muscles. The reasons for not allowing the results of these experiments to go beyond the physiological laboratory are discussed in this article.
Recurrence of cardiac myxoma. Clinical and morphological aspects
Authors: Iljinsky I. M. , Ivanov A. S. , Lugovsky M. K. , Mozhejko N. P.
Published: February 2018

Aim: to conduct a one-center retrospective research of heart myxoma relapses in a large group of patients.

Materials and methods. Since 1992 to 2016 115 surgical removal of sporadic cardiac myxoma was performed (44 male, 71 female).

Results. Two (1.7%) patients had recurrence of sporadic myxoma of the left atrium. One patient had the tumor returned due to inadequate removal of the tumor. Myxoma was removed without excising the place of ﬁ xation to the interatrial septum. The second patient possibly had recurrence of myxoma due to the conservation of a small tumor fragment in another part of the interatrial septum that was not diagnosed during the removal of the primary tumor.

Conclusion. Recurrence of sporadic myxoma of the left atrium is rare. The reasons for the recurrence may be different but usually it is due to non-radical removal of the tumor. The results of our research show that even removal of the myxoma together with the interatrial septum does not fully guarantee the prevention of recurrence. The recurrence of sporadic cardiac myxoma is possibly associated with minor formations that are not diagnosed during surgery. We cannot exclude the possibility of forming myxoma denovo also.
In vitro study of a biological prosthetic valve for seamless fixation
Authors: Klyshnikov K. U. , Ovcharenko E. A. , Stasev A. N. , Scheglova N. A. , Odarenko Yu. N. , Khalivopulo I. K. , Kudravtseva Yu. A. , Barbarash L. S.
Published: February 2018

Aim: to evaluate the manipulative properties of the system being developed for cardiac valve re-operation on an in vitro bovine heart model.

Material and methods. The prototype of the prosthesis being developed, mounted on the implant holder, as well as the dilatation balloon of its own design, were used as the objects of the study. The bioprosthesis «UniLine» of 21 mm size for the aortic position was chosen as the target site of implantation, which was established by the «classical» suture method. After that, the implantation of the tested device was carried out as a «valve in valve» and the quality of the installation and the combined operation of all the components of the re-prosthesis system were evaluated.

Results. The test implantation demonstrated the consistency of the proposed method on the basis of balloon seamless ﬁ xation, as well as high ergonomic characteristics: the average time of seamless implantation of the developed prototype on an in vitro animal heart model was 3 minutes versus the implantation of the «UniLine» bioprosthesis – 11 min, Implantation provided a reliable prosthesis The breaking force was 12.9 N, which is equivalent to a pressure of 279 mm Hg.
Technology features of decellularization of human liver fragments as tissue-specific fine-grained matrix for cell-engineering liver construction
Authors: Nemets E. A. , Kirsanova L. A. , Basok Ju. B. , Schagidulin M. Ju. , Volkova E. A. , Metelsky S. T. , Sevastianov V. I.
Published: February 2018

One of the problems when you create a bioengineered liver, as an alternative to transplantation of the donor liver in the treatment of end-stage liver failure, is the matrix, able to temporarily perform the functions of the natural extracellular matrix (ECM) and provide the necessary conditions to maintain the viability of the liver cells. The main disadvantage of resorbable biopolymer matrices is the absence of tissue speciﬁ c properties and the impossibility of reproducing the unique structure of the ECM of the liver.

Aim:to develop technology for decellularization of liver tissue fragments, saving the structural properties of native ECM of the liver.

Materials and methods.The decellularization of mechanically grinded human liver fragments was carried out in three changes of buffer solution (pH = 7.4) containing 0.1% sodium dodecyl sulfate and increasing the concentration of Triton X100 (1%, 2% and 3%, respectively). During technology development were investigated the effects of duration, conditions (static, dynamic, rotary system, magnetic stirrer) washing and methods of liver tissue grinding on the completeness of removal of cellular elements and detritus preserving the the liver ECM structure. Slices of decellularized liver tissue samples were stained by hematoxylin and eosin, and Masson method for the detection of connective-tissue elements.

Results.Histological analysis methods showed that the best from the point of view of efﬁ ciency of decellularization and the safety of the structure of own human liver ECM, is a mode of washing of liver fragments for three days at room temperature in static conditions, accompanied by stirring by a magnetic stirrer for 2–3 times a day for one hour. Longer time or a large multiplicity of mixing mode is accompanied by increased risk of liver tissue damage. On the basis of the experimental results obtained the algorithm of preliminary study of donor human liver designed to optimize the process of obtaining decellularization fragments of liver tissue was elaborated.

Conclusion.It was elaborated the algorithm and technology of obtaining of decellularized liver tissue fragments from the human donor liver which saved the structural properties of native ECM of the liver and complete removal of cellular elements and detritus.
Effects of inhalation and intravenous administration of allogeneic mesenchymal bone marrow stromal cells in a bleomycin-induced model of pulmonary fibrosis in rabbits
Authors: Averyanov A. V. , Konoplyannikov A. G. , Zabozlaev F. G. , Danilevskaya O. V. , Konoplyannikov M. A. , Sorokina A. V. , Koroleva I. A. , Antonov N. S. , Osipova G. L. , Vasilyeva O. S. , Sakharova G. M. , Tatarsky A. R. , Kobylianskii V. I. , Romanov V. V. , Stepanyan I. E. , Babak S. L. , Troitsky A. V.
Published: February 2018

Aim:to perform a comparative analysis of the efﬁ cacy of the inhaled and intravenous delivery of equivalent doses of bone marrow mesenchymal stem cells (BMMSCs) in rabbits according to the standard model of bleomycin pulmonary ﬁ brosis.

Materials and methods.After bronchoscopic instillation of bleomycin, 5 rabbits received intravenous transplantation of 2 × 106 allogeneic BMMSCs, other 5 rabbits – 2 × 107 MSCs inhaled via compressor nebulizer; control healthy and bleomycin group included 5 animals each.

Results.Both groups treated with BMMSCs had a signiﬁ cantly lower Ashcroft ﬁ brosis index than the bleomycin control group. Expression of collagen in lung tissue in all groups with bleomycin injury was superior to healthy controls, but in animals underwent intravenous BMMSC transplantation collagen score was 0.74 points, and in inhaled treated group – 0.51 points, while in bleomycin controls – 2.1 point. Levels of TNF-α and TGF-β1 in BAL ﬂ uids tended to decrease in treatment groups, but did not differ signiﬁ cantly from control. A similar picture was observed in the cytological analysis of BAL.

Conclusion.In general, both methods of delivering of BMMSCs to the lungs demonstrated similar therapeutic effects in inhibiting the development of experimental ﬁ brosis, indicating that both intravenous and inhalational way of introduction can be used for subsequent clinical studies.
Engineering future liveable, resilient, sustainable cities using foresight
Authors: Rogers Chris DF
Published: February 2018

This paper shows how civil engineers can build better cities through a deeper understanding of the future benefits, resilience and value of their proposed urban infrastructure solutions. Three practical, foresight-based assessment methods are introduced and, for the first time, combined into a coherent design process founded on systems thinking. Based on data derived from a portfolio of research programmes, the University of Birmingham’s 2014 Future Urban Living report and the findings from the UK government’s Foresight Future of Cities project, they represent a synthesis of 15 years of research into sustainable, resilient and liveable cities. The three scenario-based methods provide a robust way for civil engineers to determine the likely performance and value of any future urban infrastructure scheme.
OECD’YE ÜYE ÜLKELERİN İŞ KALİTESİNE YÖNELİK ÖLÇÜTLERİNİN YAŞ, CİNSİYET VE EĞİTİM DÜZEYİ AÇISINDAN DEĞERLENDİRİLMESİ
Authors: SUNER Aslı , AKTÜRK HAYAT Elvan
Published: February 2018

Çalışanların
iş yerlerindeki refahı, iş yerinde özerklik sahibi olup olmadıklarına, öğrenme
fırsatlarının ve iyi tanımlanmış iş hedeflerinin bulunup bulunmamasına,
kişilerin yönetim ve meslektaşları tarafından desteklenmesine bağlıdır. İş
kalitesi, çalışanların refahına katkıda bulunmanın yanı sıra; iş gücüne
katılımın, verimliliğin ve toplam ekonomik performansın artmasının önemli bir
itici gücünü oluşturmaktadır. Bu nedenle, iş kalitesindeki düşüklük gelişmekte
olan ülke ekonomilerinde, öne çıkan bir politika kaygısı olmaktadır. İş
kalitesi, Ekonomik Kalkınma ve İş Birliği Örgütü’nün (OECD) İş Kalite Çerçevesi
kapsamında kazanç kalitesi, iş gücü piyasası güvenliği ve çalışma ortamının
kalitesi olarak üç temel boyutla tanımlanmıştır. Bu çalışmada, OECD’nin veri
tabanında yer alan 23 ülkenin çalışma ortamının kalitesinin, çoklu uygunluk
analizi yöntemi kullanılarak, değerlendirilmesi amaçlanmıştır. Ülkelerin çalışma
ortamının kalitesi cinsiyete, yaşa ve eğitim düzeyine göre incelenmiş; ülkeler
arasındaki benzerlikler ve farklılıklar ortaya konularak Türkiye’nin bu ülkeler
arasındaki durumu değerlendirilmiştir. Sonuç olarak, çoklu uygunluk analizi
yönteminin kullanılmasının farklı bir bakış açısı sağladığı ve elde edilen
bulguların politika belirleyicilere yarar sağlayacağı düşünülmektedir.
Do CFOs Think Investment is Sensitive to Interest Rules?
Authors: Sharpe Steven A. , Suarez Gustavo A.
Published: February 2018

This piece presents results from ongoing research that takes a new look at the sensitivity of a business's capital expenditures to changes in interest rates.
Using Big Data in Finance: Example of Sentiment-Extraction from News Articles
Authors: Sinha Nitish R.
Published: February 2018

There is much discussion and research in finance on using "big data" to understand market "sentiment."
Deleveraging: Is It Over and What Was It?
Authors: Sahm Claudia R.
Published: February 2018

Anyone who has followed the commentary on consumer spending in recent years has heard a lot about household deleveraging.
Enhanced Financial Accounts
Authors: Gallin Joshua Hojvat , Smith Paul A.
Published: February 2018

The Federal Reserve Board has begun an ambitious and long-term effort to upgrade the Financial Accounts of the United States to provide a significantly more detailed and timely picture of financial intermediation in the United States.
The Social Discount Rate in Developing Countries
Authors: Warusawitharana Missaka
Published: February 2018

The "social discount rate" is the interest rate used in cost-benefit analyses of infrastructure and other public projects.
Where Are The Construction Workers?
Authors: Paciorek Andrew D.
Published: February 2018

The labor market for construction workers suffered a massive shock in the wake of the housing bust, as demand for new homes dried up and firms rapidly shed workers.
The Recent Slowdown in High-Tech Equipment Price Declines and Some Implications for Business Investment and Labor Productivity
Authors: Byrne David M. , Pinto Eugenio P.
Published: February 2018

Investment in high-tech equipment spurred by rapidly falling prices has accounted for an important share of business investment and labor productivity growth since the 1970s.
Forecasts of Economic Activity in the Great Recession
Authors: Sahm Claudia R.
Published: February 2018

Forecasts by the Board staff for economic activity during the Great Recession proved to be overly optimistic on some dimensions, such as GDP, and yet were appropriately pessimistic on other dimensions, such as the GDP gap (the deviation of GDP from potential output).
Residual Seasonality in GDP
Authors: Gilbert Charles E. , Morin Norman , Paciorek Andrew D. , Sahm Claudia R.
Published: February 2018

With a second year in a row of unusually weak first-quarter growth, some analysts have argued that there may be residual seasonality in the GDP data, that is, a predictable seasonal pattern remains in the published data.
Taxonomy of Studies on Interconnectedness
Authors: Kara Gazi Ishak , Tian Mary , Yellen Margaret
Published: February 2018

This note provides a taxonomy of existing studies in the literature on interconnectedness, focusing specifically on empirical measures.
Hanging on Every Word: Semantic Analysis of the FOMC's Postmeeting Statement
Authors: Meade Ellen E. , Acosta Miguel
Published: February 2018

The Federal Open Market Committee's (FOMC or "Committee") postmeeting statements constitute one of the key vehicles through which the Committee communicates its assessment of the economy, its policy actions, and its thinking about future policy.
Federal Debt in the Financial Accounts of the United States
Authors: Cagetti Marco , Hoops Matthew , Ogden Rick
Published: February 2018

This note explains the concept of federal debt in the Financial Accounts of the United States, how it has recently changed, and how it differs from other commonly cited measures of federal debt. As described below, a key factor is the treatment of intragovernmental holdings of U.S. debt securities.
Introducing Section 529 Plans into the U.S. Financial Accounts and Enhanced Financial Accounts
Authors: McCullers Madeline , Stefanescu Irina
Published: February 2018

Section 529 plans are tax-qualified college saving or prepaid tuition programs generally offered and administered by the states. Created as tax-advantaged savings vehicles, they were designed to encourage families to save for future college education expenses.
Trade in Value-Added
Authors: Lewis Logan
Published: February 2018

As global production sharing expands, gross trade flows provide an increasingly misleading picture of the economic importance of trade.
How much has Dollar Appreciation Affected U.S. Corporate Profits?
Authors: Bertaut Carol C. , Sinha Nitish R.
Published: February 2018

U.S. corporate profits fell about 1.4 percent in the fourth quarter of last year and, based on estimates from the Bureau of Economic Analysis (BEA), declined a further 5.2 percent in the first quarter of 2015.
"Low-For-Long" Interest Rates and Portfolio Shifts in Advanced Foreign Economies
Authors: Ammer John , Tabova Alexandra , Wroblewski Caleb
Published: February 2018

For the past several years, interest rates in many advanced economies have been at historic lows. Although low interest rates have helped support recovery in these economies, persistently low rates have also raised concerns about increased incentives for risk-taking by investors to achieve higher yields.
Drivers of Inflation Compensation: Evidence from Inflation Swaps in Advanced Economies
Authors: Rodriguez Marius del Giudice , Yoldas Emre
Published: February 2018

In this note, we provide a comparative analysis of inflation swaps for three advanced economies: the United States, the euro area, and the United Kingdom. We consider empirical proxies for energy prices, economic activity, exchange rates, and risky asset prices as potential drivers of inflation expectations and risk premiums in a regression framework.
СИНТЕЗ И ХАРАКТЕРИЗАЦИЯ ПОРОШКОВ SrF2:Yb:Tm
Authors: Кузнецов Сергей Викторович , Ермакова Юлия Александровна , Маякова Мария Николаевна , Воронов Валерий Вениаминович , Ермаков Роман Павлович , Федоров Павел Павлович
Published: February 2018

Исследован синтез образцов твердого раствора Sr1-x-yYbxTmyF2+x+y (x = 0.010–0.300; y = 0.001–0.060) при использовании различных методик осаждения: прямое, обратное и совместное осаждение исходных растворов, а также различных фторирующих агентов (фторид аммония и фтороводородная кислота). В результате исследования при использования NH4F было обнаружено, что при прямом и обратном осаждении в концентрационном диапазоне 0.10<x+y<0.24 существует область фазового расслоения, где образуются структурно идентичные твердые растворы с малым различием в параметре решетки. Термообработка при 600 ºС приводит к спеканию твердых растворов с выравниваем состава. При совместном осаждении синтезируются однофазные образцы. При использовании в качестве фторирующего агента фтороводородной кислоты фазовое расслоение двух структурно идентичных твердых растворов приводит к значительным различиям параметров решетки, выравнивания состава при данной термообработке не происходит.

Авторы благодарят А.Е. Баранчикова и В.К. Иванова за характеризацию образцов методом сканирующей электронной микроскопии. Работа выполнена при финансовой поддержке гранта РФФИ № 16-32-00654-мол_а.
МИКРОСКОПИЧЕСКИЙ АНАЛИЗ ПОВЕРХНОСТИ ГЕТЕРОГЕННЫХ МЕМБРАН С РАЗНОЙ СТЕПЕНЬЮ ДИСПЕРСНОСТИ ИОНООБМЕННИКА ПОСЛЕ ТЕМПЕРАТУРНОГО ВОЗДЕЙСТВИЯ
Authors: Яцев Андрей Михайлович , Акберова Эльмара Маликовна , Кожухова Евгения Юрьевна , Васильева Вера Ивановна
Published: February 2018

Микроскопическими методами анализа визуализированы различия в микроструктуре поверхности набухших образцов экспериментальных сульфокатионообменных мембран Ralex СМ Pes (Чехия) с разным временем измельчения ионообменника. Выявлено уменьшение размеров и сближение зон проводящей фазы на поверхности мембран, содержащих ионообменник, подвергнутый большему времени измельчения. Методом РЭМ показано, что в результате длительного воздействия повышенных температур происходит увеличение макропористости, появление новых дефектов структуры, уменьшение доли ионообменной фазы на поверхности мембран.

Микрофотографии поверхности мембран получены в ЦКПНО ВГУ.

Работа выполнена при финансовой поддержке грантов РФФИ (проекты №№ 15-08-05031 и 16-38-00572 мол_а).
ВЛИЯНИЕ НЕКОТОРЫХ ФАКТОРОВ НА ЭКСТРАКЦИЮ УРАНА И ТОРИЯ ИЗ ВОДНЫХ РАСТВОРОВ ХЛОРИРОВАННЫМИ НАФТЕНОВЫМИ КИСЛОТАМИ
Authors: Ахмедов Мубариз Меджид оглы , Мамедова Севиндж Рагим гызы , Рагимли Манзар Ахмед гызы
Published: February 2018

Изучено экстракционное извлечение микроколичеств ионов урана и тория из водных растворов с различным содержанием солей щелочных металлов хлорированными нафтеновыми кислотами. Установлено, что экстракционное извлечение микроколичеств урана и тория из водных растворов хлорированными нафтеновыми кислотами зависит от рН раствора и добавки солей щелочных металлов. Экспериментально выявлены оптимальные соотношения ХНК: Тh4+ = 3.4 и ХНК: UO22+ > 6, отвечающие максимальному извлечению данных ионов хлорированными нафтеновыми кислотами.
ВЗАИМОДЕЙСТВИЕ ЛОКАЛИЗОВАННЫХ СОСТОЯНИЙ ВБЛИЗИ ГРАНИЦЫ РАЗДЕЛА НЕЛИНЕЙНЫХ СРЕД
Authors: Савотченко Сергей Евгеньевич
Published: February 2018

В работе рассмотрены связанные состояния, локализованные вблизи границы раздела нелинейных сред и свободно распространяющиеся вдоль нее. Задача сводится к решению нелинейного уравнения Шредингера с граничными условиями особого вида. Установлено, что возможно существование нелинейных локализованных состояний, несимметричных относительно границы раздела сред. Структура и форма таких состояний определяется знаком ангармонизма взаимодействия в среде и интенсивностью взаимодействия возбуждений и другими характеристиками среды. Получены соотношения, определяющие значения энергии локализованной вдоль границы раздела сред волне при фиксированном направлении ее волнового вектора.
ДИФФУЗИОННЫЕ ПОГРАНИЧНЫЕ СЛОИ В РАСТВОРЕ НА ГРАНИЦЕ С СУЛЬФОКАТИОНООБМЕННОЙ МЕМБРАНОЙ ПОСЛЕ ТЕМПЕРАТУРНОЙ МОДИФИКАЦИИ
Authors: Акберова Эльмара Маликовна
Published: February 2018

Методом лазерной интерферометрии измерены концентрационные профили и определены размеры диффузионных пограничных слоев в растворе на межфазной границе с сульфокатионообменной мембраной МК-40 после химического кондиционирования и температурного воздействия. Установлено, что при плотностях тока, превышающих предельные диффузионные, такие свойства поверхности мембран, как электрическая и геометрическая неоднородность, определяют интенсивность электроконвективного перемешивания раствора на межфазной границе и параметры диффузионных слоев.

Работа выполнена при финансовой поддержке гранта РФФИ (проект № 16-38-00572 мол_а).
ВОЗМОЖНОСТЬ ОБРАЗОВАНИЯ ВЫРОЖДЕННОЙ ТОЧКИ МИНИМУМА НА ФАЗОВОЙ ДИАГРАММЕ СИСТЕМЫ Cd–Mg
Authors: Гончаров Евгений Григорьевич , Бондарев Юрий Максимович , Клюсова Анастасия Игоревна , Уланова Алена Васильевна
Published: February 2018

Измерением концентрационных зависимостей параметров образцов системы кадмий-магний определена область твердых растворов с немонотонным изменением физико-химических и электрофизических свойств, а также предложен возможный механизм образования точки минимума на фазовой диаграмме данной системы со стороны кадмия.
ФАЗОВЫЕ РАВНОВЕСИЯ В СИСТЕМЕ Sn–As–P ПРИ КОНЦЕНТРАЦИЯХ ОЛОВА МЕНЕЕ 50 МОЛ.%
Authors: Сушкова Татьяна Павловна , Семенова Галина Владимировна , Тарасова Лилия Александровна , Проскурина Елена Юрьевна
Published: February 2018

При исследовании политермического сечения SnAs–SnP3 тройной системы Sn–As–P методом рентгенофазового анализа установлено, что область твердофазной растворимости на основе моноарсенида олова простирается вплоть до 30 мол.% SnP3. Фазовая диаграмма сечения построена методом дифференциального термического анализа. Анализ полученных данных в совокупности с результатами исследования сплавов с меньшим содержанием олова позволил установить наличие четырехфазного равновесия перитектического типа с участием расплава и твердых растворов на основе моноарсенида олова, фосфида олова SnP3 и промежуточной фазы As0.6 - 0.7P0.4 - 0.3.
КИНЕТИКА ЭЛЕКТРООСАЖДЕНИЯ И МОРФОЛОГИЯ ПОВЕРХНОСТИ КАДМИЕВЫХ И КАДМИЙОРГАНИЧЕСКИХ ПОКРЫТИЙ, СОДЕРЖАЩИХ ε-КАПРОЛАКТАМ
Authors: Дуран Дельгадо Оскар Андрес , Скибина Лилия Михайловна , Соколенко Алла Ивановна
Published: February 2018

Установлено, что в сульфатных электролитах кадмирования кинетика катодного процесса, микроструктура и свойства покрытий являются функцией природы и концентрации органических добавок, в качестве которых изучены ε-капролактам (КЛ), тетрагидрофуран (ТГФ) и пропиленкарбонат (ПК). Изменение состава жидкой фазы и введение в раствор циклического лактама, меняя условия сольватации, заметно сказываются на адсорбционных и координирующих свойствах компонентов электролита и, как следствие, на характере катодных процессов. Сравнением 3d-сканов поверхностей сформированных покрытий подтверждено образование металлполимерного покрытия на основе кадмия в присутствии КЛ. Расчет параметров решетки кадмия и кадмийорганического покрытия, содержащего КЛ, показал уменьшение среднего размера и объема зерен осадка.
ОСАДКООБРАЗОВАНИЕ НА АНИОНООБМЕННОЙ МЕМБРАНЕ МА-40 ПРИ ЭЛЕКТРОДИАЛИЗЕ СИЛЬНОМИНЕРАЛИЗОВАННЫХ ПРИРОДНЫХ ВОД
Authors: Яцев Андрей Михайлович , Акберова Эльмара Маликовна , Голева Елена Алексеевна , Васильева Вера Ивановна
Published: February 2018

Проведена оценка влияния структурных изменений анионообменной мембраны МА-40 после длительной эксплуатации в электродиализаторах различного типа на ее физико-химические и электрохимические свойства. Основными причинами ухудшения транспортных свойств образцов мембран являются осадкообразование на поверхности и в объеме мембраны, а также деструкция ионогенных групп мембран. Установлен состав минеральных отложений, образовавшихся в процессе эксплуатации анионообменной мембраны при деминерализации и концентрировании природных вод.

Авторы выражают благодарность директору АО «Мембранные технологии», доктору технических наук, лауреату Государственной премии Казахской ССР в области науки и техники Цхай А.А. за предоставление образцов мембран для исследований.

Микрофотографии поверхности и объема мембран получены в ЦКПНО ВГУ.

Работа выполнена при финансовой поддержке РФФИ (грант № 15-08-05031).
ЛАЗЕРНОЕ СТРУКТУРИРОВАНИЕ АНСАМБЛЯ УГЛЕРОДНЫХ НАНОТРУБОК ДЛЯ СОЗДАНИЯ БИОСОВМЕСТИМЫХ УПОРЯДОЧЕННЫХ КОМПОЗИЦИОННЫХ МАТЕРИАЛОВ
Authors: Герасименко Александр Юрьевич
Published: February 2018

Изложены результаты создания и исследования свойств композиционных материалов, полученных при лазерном нагреве водно-альбуминовой дисперсии однослойных углеродных нанотрубок (ОУНТ) до образования устойчивого твердого состояния. Методом молекулярной динамики показана возможность образования внутреннего упрочняющего каркаса из ансамбля ОУНТ путем их связывания в местах дефектов под действием лазерного нагрева до температуры 80–100 °С. На основе анализа спектра комбинационного рассеяния композиционного материала описан процесс связывания атомов кислорода аминокислотных остатков альбумина с атомами углерода ОУНТ. С помощью сканирующей электронной и атомно-силовой микроскопии исследована внутренняя структура и поверхность композиционных материалов, размер пор в которых находится в диапазоне 30–120 нм.

Автор выражает благодарность профессору, д.ф.-м.н. Подгаецкому В.М. и научному коллективу кафедры биомедицинских систем МИЭТ за помощь в проведении экспериментальных работ и обсуждении результатов, а также научному коллективу профессора, д.ф.-м.н. Глуховой О.Е. за помощь в проведении теоретических исследований, в том числе с использованием программного продукта KVAZAR (www.nanokvazar.ru).

Работа выполнена при поддержке гранта Президента Российской Федерации 14.Y30.17.1328-МК от 22 февраля 2017
МОДУЛЯЦИЯ ЭЛЕКТРОННОЙ СТРУКТУРЫ УЛЬТРАКОРОТКОЙ УГЛЕРОДНОЙ НАНОТРУБКИ (0,9) ПРИ ЛЕГИРОВАНИИ ЩЕЛОЧНЫМИ МЕТАЛЛАМИ
Authors: Тучин Андрей Витальевич , Глушков Григорий Иванович , Бормонтов Евгений Николаевич
Published: February 2018

В работе установлено, что в узком интервале длин в металлических трубках (0,9) не выполняется правило 3k, существует ненулевая запрещенная зона, и трубки становятся полупроводниковыми. Энергетический зазор между граничными орбиталями в триплетном состоянии зависит от спина, поэтому проводимость трубки спинзависима, что обуславливает перспективу использования ук-УНТ в устройствах со спиновым транспортом. Ширина запрещенной зоны убывает при дискретном наращивании длин трубки.

Контролируемое введение металлической примеси приводит к модуляции запрещенной зоны, росту проводимости и спиновой поляризации в случае анионных комплексов. Таким образом, показан технологический способ управления свойствами материала для создания функциональных устройств спинтроники.

Работа выполнена при финансовой поддержке РФФИ (проект № 16-32-00926 мол_а).
РАСТВОРЕНИЕ МЕДИ В ПЕРСУЛЬФАТНЫХ СРЕДАХПРИ КАТОДНЫХ ПОТЕНЦИАЛАХ
Authors: Шафрова Марина Ф , Кондрашин Владимир Юрьевич
Published: February 2018

При катодных потенциалах в подкисленной сульфатной среде с добавкой персульфата аммония медь подвергается слабому растворению. «Аномальное» растворение, предположительно, вызвано взаимной связью электродных реакций окисления атомов меди и восстановления ионов S2O82-.

Эффективность взаимосвязи реакций невелика: на один ионизировавшийся атом меди в зависимости от катодного потенциала приходится от 55 до 250 восстановившихся персульфатных ионов.

Результаты исследований получены на оборудовании Центра коллективного пользования научным оборудованием ВГУ.
ОСОБЕННОСТИ СТРУКТУРНО-ФАЗОВЫХ ПРЕВРАЩЕНИЙ ПРИ ОТЖИГЕ ПРОТОНООБМЕННЫХ СЛОЕВ В КРИСТАЛЛАХ НИОБАТА ЛИТИЯ
Authors: Петухов Игорь Валентинович , Мушинский Сергей Сергеевич , Пермякова Мария Александровна , Кичигин Владимир Иванович , Малинина Людмила Николаевна , Волынцев Анатолий Борисович
Published: February 2018

С использованием методов оптической микроскопии в поляризованном свете, модовой спектроскопии, ИК-спектроскопии и рентгеноструктурного анализа подтверждена последовательность фазовых превращений, происходящих при отжиге протонообменного слоя на Х-срезе кристалла ниобата лития: β2-, β1-фазы → k2-фаза → k1-фаза → α-фаза. Установлено, что при превращении k2 → k1 образуются частицы k1-фазы (в виде упорядоченных структур), а не слой этой фазы.

Работа выполнена при финансовой поддержке гранта РФФИ (проект № 17-43-590309 р_а).
АДСОРБЦИЯ ВОДОРОДА НА ФРАКТАЛЬНОЙ ПОВЕРХНОСТИ
Authors: Рехвиашвили Серго Шотович , Мурга Зурида Владимировна
Published: February 2018

Выведено общее выражение для потенциала дисперсионного взаимодействия Ван-дер-Ваальса нейтрального атома со структурой, характеризующейся дробной фрактальной размерностью. Получено выражение для частоты столкновений атомов водорода в квантовом (квазиклассическом) приближении с поверхностью с произвольной фрактальной размерностью структуры. При рассмотрении общего уравнения адсорбции с учетом фрактальной размерности поверхности адсорбента было показано, что эта величина определяет показатель степени в эмпирическом уравнении изотермы адсорбции Фрейндлиха.
КВАНТОВО-ХИМИЧЕСКОЕ ИССЛЕДОВАНИЕ 2D АЛЛОТРОПОВ КАРБИДА КРЕМНИЯ
Authors: Битюцкая Лариса Александровна , Тучин Андрей Витальевич , Калашников Андрей Васильевич , Бормонтов Евгений Николаевич
Published: February 2018

Методами квантовой химии проведено исследование электронной структуры аллотропов 2D SiC с числом слоев n = 1-3. Установлено, что 2D структуры карбида кремния образуют семейство полупроводниковых материалов с шириной запрещенной зоны от 1.132 до 2.150 эВ, а послойный рост структур определяет изменение типа проводника от прямозонного однослойного SiC к непрямозонному при числе слоев n = 2, 3. Исключением являются метастабильные структуры с шириной прямозонного перехода 1.339 и 1.132 эВ.

Работа выполнена при финансовой поддержке РФФИ (проект № 16-43-360281 р_а)
ФИЗИКО-ХИМИЧЕСКИЕ СВОЙСТВА СУЛЬФАТНО-ГЛИЦИНАТНЫХ РАСТВОРОВ ЦИНКОВАНИЯ
Authors: Почкина Светлана Юрьевна , Ченцова Елена Викторовна , Соловьева Нина Дмитриевна
Published: February 2018

Изучены физико-химические свойства сульфатно – глицинатных электролитов, проведена оценка взаимодействия компонентов в изучаемых растворах цинкования при содержании ZnSO4 0.05-0.25 моль/л, NH2CH2COOH 0.6-0.95 моль/л в диапазоне температур 22-55 °С. На основании анализа зависимости электропроводности, оптической плотности, вязкости и энтальпии вязкого течения от состава растворов обоснован выбор концентраций компонентов модельного электролита цинкования.
Sağlıkta Şiddete Hasta Şikayetlerinde Yer Alan Olumsuz İfadeler Açısından Bir Bakış: Konya Örneği
Authors: ULUDAĞ Yrd. Doç. Dr. Ayhan , ZENGİN Prof. Dr. Nazmi
Published: February 2018

 Hasta şikayetleri, sağlık çalışanı-hasta ilişkisine dair önemli ipuçları vermektedir. Sağlıkta hasta ve yakınları kaynaklı şiddet olgusunun üzerinde ciddiyetle durulmalıdır. Hasta şikayetleri incelendiğinde, şiddet olgusunun nedenlerine ilişkin bulgular elde edilebilecektir. Çalışmada, Konya Sağlık Müdürlüğü Hasta Hakları İl Koordinatörlüğü’nün hasta hakları sistemine 2012 yılında yapılan 663 başvuruda geçen olumsuz ifadelerin kullanılma durumu incelenmiştir. Elde edilen veriler ışığında hasta algıları ve tutumlarının belirlenmesi amaçlanmıştır. İfadeler kodlandıktan sonra, istatistik paket programına girilerek sayısallaştırılmış ve analize tabi tutulmuştur. Şikayetlerde, 36 olumsuz ifadenin toplam 917 kez geçtiği bulunmuştur. Sonuç olarak hasta-sağlık çalışanı ilişkisinde olumsuz ifadeler, hasta algı ve tutumlarına olumsuz etki etmektedir. 
Preventive role of aminophylline on renal vascular changes among shock wave lithotripsy patients
Authors: Sarpal Rajeev , Goyal Mamta , Pathak Priyank , Ganesamoni Raguram , Sabnis Ravindra Bhalchandra
Published: February 2018

Background: Shock wave lithotripsy is commonly used procedure for the treatment of urinary calculi which has revolutionized the treatment of urinary lithiasis since 19801. This study was undertaken to study the effect of aminophylline as a protective measure in preventing renal microvascular damage following SWL through RI in a prospective randomised controlled fashion.Methods: This prospective randomized experimental case control study was conducted from September 2010 to August 2011 at a tertiary care urological hospital. Total 52 patients with less than 2cm size renal stones were divided in two groups of 26 patients each.Results: Stone characteristics as site, size, laterality and Hounsfield units (HU) were comparable in both the groups. Mean RI of diseased and contralateral kidneys in group ‘A’ showed statistically significant rise at 4 hours, 12 hours and 24 hours, with no significant difference in RI at one week and one month. Complete stone clearance was achieved in immediate post-operative period in 88.46% of cases in group A and 96.1% in group B.Conclusions: Author conclude protective effect of aminophylline over renal vascular injury in shock wave lithotripsy patients in form of early return of resistive index values toward baseline.
Comparison of Blast Analysis Methods for Modular Steel Structures
Authors: ERKMEN Bülent
Published: February 2018

Two blast analysis
methods widely used are three-dimensional finite element (FE) and uncoupled
equivalent single degree of freedom (ESDOF) methods. The uncoupled equivalent ESDOF
method, which is the most common blast analysis method, provides considerable
advantages and simplicity in analysis and design stages. However, the inherent assumptions
and simplifications involved but especially neglecting members dynamic
interactions can significantly affect accuracy of analysis results. In this
study, blast performance of a prototype two-module steel blast-resistant
building is evaluated using uncoupled ESDOF and FE methods. The results are
compared to evaluate adequacy of uncoupled ESDOF method for blast analysis of
the structure.
Empresas turísticas y factores de innovación: Evidencias a partir del caso de estudio de Cuenca (Ecuador)
Authors: Astudillo Silvana , Prada-Trigo Jose
Published: February 2018

O artigo apresenta uma análise descritiva da introdução das inovações: produto, processo, organização e comercialização nas micro, pequenas e médias empresas de turismo na cidade de Cuenca (Equador), no período de gestão 2011 e 2012. Foi aplicado um questionário para 90 empresas do setor, com indicadores qualitativos. Os resultados das análises indicaram que as inovações incrementais são mais do que as radicais, principalmente com melhorias no produto e a introdução de novos processos, melhorias nas práticas empresariais de negócios e na incorporação de mecanismos de promoção dentro da comercialização. As inovações incrementais e radicais mostram uma associação com o tamanho da empresa e as vendas anuais.
Reflexões sobre o processo de aprendizagem social do turismo como prática na orla marítima de João Pessoa/PB
Authors: Cavalcante Erica Dayane Chaves , Bispo Marcelo De Souza , Soares Lídia Da Cunha
Published: February 2018

O objetivo deste estudo consistiu em refletir sobre o processo de aprendizagem social do turismo como prática (TAP) na Orla Marítima de João Pessoa/PB. Foi considerada ainda a compreensão do conjunto de elementos sociomateriais (humanos e não humanos) que alicerçam o TAP na Orla Marítima. Sob a epistemologia das práticas sociais para coleta e análise de material empírico foi utilizada a etnometodologia. Em consonância, como técnicas de coleta, utilizaram-se conversas informais, observação direta e diários de campo. Os resultados indicam que os processos de aprendizagem ocorrem por meio da experiência, socialização, participação e engajamento, sendo intermediados por elementos imateriais (não humanos), tais como a linguagem particularizada e a própria cultura local. Como conclusões, com base nos resultados, pode-se afirmar que os processos de aprendizagem é o que permite que o TAP possa se realizar e se aprimorar no contexto estudado, visto que atores sociais relataram que empreenderam como resultado da aprendizagem e interação com outros atores e que esse mesmo processo de aprendizagem permite que o empreendimento se aprimore ao longo do tempo, assim um aspecto que influencia na utilização e organização do espaço Orla, possibilitando que o turismo aconteça e aperfeiçoe-se.
Hostel: o estado da arte e considerações para futuras pesquisas
Authors: Bahls Álvaro Augusto Dealcides Silveira Moutinho , Pereira Yára Christina Cesário
Published: February 2018

Os hostels são um tema carente de aprofundamento científico. Esse meio de hospedagem alternativo possui características que o diferenciam dos tradicionais. Não há, atualmente, uma classificação oficial sobre ele, por parte do Ministério do Turismo. Tem-se como objetivo principal apontar as lacunas de estudo existentes e sugerir áreas de pesquisa que auxiliem na disseminação dos hostels e em sua futura classificação. Isso é cumprido por meio do levantamento do estado da arte sobre o tema hostel, realizado entre os meses de agosto de 2013 e novembro de 2014, em um recorte temporal de 25 anos. As palavras-chave usadas foram: hostel e turismo backpacker. Essa coleta resultou em um total de 66 referências científicas. Conclui-se que, apesar de embrionário, o tema de estudo mostra-se promissor, com trabalhos concisos. No entanto, as áreas de pesquisa focam-se na gestão, marketing e público-alvo do tema, enquanto que os aspectos históricos, filosóficos e de conceptualização ainda não foram abordados coerentemente. Sugere-se que, anteriormente à produção científica sobre a gestão desse meio de hospedagem, seja incentivado o estudo sobre o conceito de hostel, principalmente no Brasil.
Santos e Região Convention & Visitors Bureau e a governança para o desenvolvimento turístico da costa da Mata Atlântica (SP)
Authors: Oliveira Daniela Tineo , Tomazzoni Edegar Luis
Published: February 2018

Os Conventions Bureaus são entidades que articulam ações de divulgação e de marketing para promover os destinos turísticos. As relações em redes são fundamentais para fortalecer os vínculos de confiança, a cooperação, o capital social e tornar uma região turisticamente competitiva. O objetivo deste artigo é analisar a governança e as relações de redes interorganizacionais no Santos e Região Convention & Visitors Bureau para o desenvolvimento do turismo regional. A abordagem da pesquisa é qualitativa e exploratória, de caráter descritivo, com revisão bibliográfica e investigação documental, e entrevista semiestruturada com o diretorexecutivo da entidade. Além desses procedimentos, aplicou-se questionário a 14 gestores, e os resultados foram analisados em escala Likert, calculando-se o ranking médio das respostas com variáveis que avaliam o grau de governança e a consolidação da rede. Constatou-se que o Santos e Região CVB exerce a governança do turismo da região, todavia, os relacionamentos devem ser fortalecidos, com base na comunicação e nos vínculos de confiança entre os atores responsáveis envolvidos.
Argumentação e demonstração em matemática: a visão de alunos e professores
Authors: Caldato João , Utsumi Miriam Cardoso , Nasser Lilian
Published: February 2018

Com o objetivo de investigar a visão de alunos e professores sobre argumentação e demonstração matemática, à luz da tipologia de provas de Balacheff (1988), aplicamos um questionário a professores da Educação Básica do interior do Estado de São Paulo. A partir da análise dos questionários, selecionamos duas turmas do 9º ano do Ensino Fundamental, de professores e escolas públicas distintas que resolveram um teste para avaliar o nível de prova desses alunos. Dentre os resultados obtidos, verificou-se que, em geral, os docentes adotam como sinônimos os termos argumentação, explicação e demonstração, e isto é refletido nas resoluções dos discentes, que apresentam o nível de prova classificado como empirismo ingênuo. Acreditamos que os cursos de licenciatura devem proporcionar aos futuros professores a oportunidade de conceber a argumentação e demonstração como um recurso metodológico a ser utilizado em sala de aula, a fim de criar um ambiente favorável à exploração-investigação da matemática.
PRÁTICAS PEDAGÓGICAS:TECNOLOGIAS MÓVEIS SEM FIO NA DISCIPLINA DE ARTE
Authors: Raach Adriana Beatriz Pacher , Backes Luciana
Published: February 2018

O artigo aborda a prática pedagógica na disciplina de arte, por meio das tecnologias móveis sem fio (TMSF). A pesquisa foi desenvolvida num estudo de caso, com estudantes do ensino fundamental, numa escola privada do município de Porto Alegre (RS/Brasil). A problemática consiste: Como ocorre à construção do conhecimento na disciplina de arte por meio de práticas pedagógicas que utilizam as TMSF? O objetivo implicou em propiciar uma prática pedagógica contextualizada com a contemporaneidade, considerando os conteúdos curriculares da disciplina, por meio da abordagem triangular de Barbosa (1998), inserindo as TMSF.  Observamos, por meio das práticas pedagógicas, os recursos analógicos e digitais utilizados nas criações de releituras, dando ênfase às TMSF, o fazer artístico, a leitura e a contextualização. Como resultado, evidenciamos que os estudantes apresentaram releituras através dos recursos analógicos (desenhos no papel) e também pelos recursos digitais (fotografia e vídeo). Os recursos digitais foram utilizados pelos estudantes de maneira tradicional (pesquisa, desenho, fotografia), necessitando da mediação do professor para articular as potencialidades da tecnologia à construção do conhecimento (autoria, criatividade, múltiplas linguagens). A utilização das TMSF está fortemente vinculada às atividades de lazer e de jogos, com isso, representa desafio para a sala de aula, onde é possível potencializar os processos de ensino e aprendizagem, por meio de práticas pedagógicas paralelas.