bluuebunny/crossref_metadata_2025 huggingface dataset:
EXTRACTION OF ADENOSINE AND CORDYCEPIN FROM SPENT SOLID MEDIUM OF MEDICINE FUNGI CORDYCESP MILITARIS
Authors: Thành NGUYEN Tiến
Published: October 2018

The fungiCordyceps spp. which have been known as Dong Trung Ha Thao and their secondary metabolites cordycepin and adenosine, in recent years, attracted a great effort from many research not only in exploitation of new species but also the artificial cultivation and extraction of bioactive compounds for application in functional food.  Cordyceps militarisis nowadays successful domesticated and cultivated in artificial solid medium including rice, silk -worm, coconut milk and minerals. Apart from main products of fruiting body of fungi, the spent solid medium also is considered as valuable due to the high content of bioactive compound remained. This part is normally used for making liquor after a long incubation with food-grade ethanol. In this study, with the aim to obtain the concentrate of bioactive compounds with less time used, several methods of extraction and concentration were performed with the residual solid medium using ethanol with and without the support of heat and ultrasonic. It was shown that, by using 50% of ethanol, adenosine and cordycepin could effectively thermal – extracted at 65oC for 6h.  By vacuum evaporation, the concentration of two those compounds was increased 10 times with high recovery yield, facilitating for further usage.
RESEARCH ON EXTRACTION OF ISOFLAVONES FROM SOYBEAN GERM
Authors: Vien DO Thi Hoa
Published: October 2018

Isoflavones in soybean including genistein, daidzein, glycitein and their acetyl and malonyl derivatives that have week estrogenic activity, so they are called phytoestrogen. There are many of papers publishing the research results about isoflavones from soybean seed and soybean sprout. They can balance estrogenic hormone and support woman to prevent menopause symptoms. Therefore, they have other precious biological activities such as anti - cancer, anti – oxidant and anti - osteomalacia. On the market, we can find many of functional foods of isoflavones from soybean seed and soybean sprout. Soybean germ is the part of soybean seed contains highest isoflavones, and the isoflavones content in soybean germ higher than that in the whole soybean seed about 5 times. In this paper, the total isoflavones were extracted from soybean germ. Five of influent factors on the isoflavone extraction are solvent concentration, extraction temperature, extraction time, extraction pH and the material/solvent ratio were optimized. The content of isoflavones in soybean germ material is from 1.8 to 2 percent. After extraction with optimized conditions, we obtain the total crude isoflavones extract that contains 3.8% of isoflavones.
STUDY ON EXTRACTION OF TANNINS FROM THE GARCINIA MANGOSTANA LINN PEEL IN VIETNAM
Authors: Nguyen Hien
Published: October 2018

Garcinia mangostana Linn is known as the "queen of fruit" in Vietnam, which is grown in the provinces of the Mekong Delta and the South Eastern area. Many researches showed that the pericarp of this fruit has many active components, such as xanthones, anthocyanins, tannins, etc. Tannin content of Gacinia mangosteen Linn peel of four regions (Can Tho, Tra Vinh, Bình Duong and Vinh Long provinces) in Vietnam was investigated. It was 13.80% (Vinh Long), 13.91% (Can Tho), 14.15% (Binh Duong), 14.50 % (Tra Vinh). This study focused on the extraction of the tannins compound from the Garcinia mangostana Linn for applications in the food industry, especially in the wine-producing industry.The pericarp of mangosteen was treated with Termamyl SC and Pectinex Ultra SP-L enzymes, then mixed with 60% ethanol at the ratio of 1/20 (material /solvent) and heating for 120 minutes at 60°C. The extracts then were obtained after centrifugation at 5000 rpm for 10 minutes and vacuum filtered. The extraction efficiency was more than 90%, higher than without enzyme pretreatment (87.35%).
OPTIMIZATION OF GINGER OLEORESIN EXTRACTION FROM FRESH GINGER BY USING MICROWAVE - ASSISTED ENERGY
Authors: Trung Dung NGUYEN , Duc Ta Hong , Thanh Nguyen Dang Binh
Published: October 2018

Nowadays, the active compounds from natural products are interested in not only research fields but also industrial area. Steam distillation is widely employed for the isolation of bioactive substances from natural sources. However, the process is usually long time consuming, high energy consumption and unwanted chemicals can be entrained with the main products. Microwave-assisted extraction is now recognized as an efficient extraction technique that dramatically reduces extraction time, increases yields and higher quality of the extracts can be obtained. The aim of this study is evaluation of the major factors affected by operating parameters such as concentration of solvent, radiation time, ratio of microwave power to material, volume of solvent on yield of products by microwave-assisted extraction. In addition, comparison between traditional extraction methods and microwave-assisted extraction is also carried out. The results show that application of microwave energy for the extraction of active substances from fresh ginger have faster heating, reduce thermal gradients and extraction time.
STEROIDAL DIGLYCOSIDES FROM THE STARFISH ANTHENEA SIBOGAE
Authors: Hưng Nguyễn Anh
Published: October 2018

Two steroidal diglycosides namely anthenoside R (1) and anthenoside S (2) were isolated from the methanol extract of the starfish Anthenea sibogae. Their structures were elucidated by means of 1D, 2D-NMR, HR-MS techniques and by comparison of their NMR data with reported values.
amino acid analysis service v1
Authors: Cryer Sherry
Published: October 2018

amino acid analysis service, It is widely known that protein/peptide quantities is highly needed for further applications, quantitative amino acid analysis, qAAA, is a suitable assay. It can precisely determine protein quantities and provide detailed information regarding the relative amino acid composition and free amino acids. The method of amino acid analysis service is very different from Very long Chain Fatty Acids and Bile Acids Analysis
EXPERIMENTAL DESIGN OF A SPATIAL LATTICE METAL STRUCTURE FOR COVERING AN INDUSTRIAL BUILDING
Authors: ALPATOV Vadim Yu. , SOLOVYOV Alexey V.
Published: October 2018

The article presents information on the development of a new technical solution for the spatially-barrel construction of the covering. The authors propose a metal three-dimensional lattice construction, assembled from corner sections using sheet shapes in knots. On the proposed solution the authors obtained a patent. To prove the validity of the previously stated assumptions about the properties of the future design, namely its reliability and safety, the authors carried out experimental design work. The proposed coating design was designed, manufactured and applied as a covering for a production building. After the installation of the roof experimental design tests were carried out by design load. The load was simulated by loading the cover with sandbags. During the tests the stresses were measured in the most important rods. The results of the measurements showed compliance with the calculated forecasts.
DESIGN SOLUTIONS FOR CONSTRUCTION OF THE MAIN COLLECTOR OF RAIN SEWAGE AND CENTRALIZED TREATMENT FACILITIES OF THE SURFACE FLOW OF THE VOLGA STOCK IN SAMARA
Authors: SHUVALOV Mikhail V. , STRELKOV Alexander K.
Published: October 2018

The main design decisions of the design and working documentation for the construction of the main collector of rain sewage and centralized treatment facilities for surface runoff of the Volga slope in Samara are presented. The route of the main collector of rain sewerage adopted in the project provides the possibility to connect eleven existing releases of untreated surface sewage located in the zones of sanitary protection of water intakes of the drinking water supply system of Samara. The scheme for the purifi cation of surface wastewater envisages a four-step treatment of water, including disinfection with UV irradiation.
THE RENAISSANCE ARCHITECTURAL TREATISES
Authors: DANILOVA Elina V.
Published: October 2018

The article is devoted to the architectural theory created in the Renaissance. During this period, for the fi rst time since Antiquity, a classical theory of architecture was created and developed, which until today largely determines modern theory. In the architectural theory of the Renaissance separate sections were developed, which eventually turned into separate directions, and retain their autonomy today. The article deals with the features of the historical evolution of architectural theory in the 15th-16th centuries, the theoretical contributions of the authors of the theory and topics that are common to all treatises are analyzed. The conclusion is made about the constants of the theory of architecture that determine its meaning and structure, regardless of the features of historical periods.
ARTISTIC FEATURES OF PLANNING OF DWELLING INTERIOR
Authors: ARTEMEVA Tatyana G.
Published: October 2018

In the article the specifi c of decision of artistic problems of planning of dwelling interior opens up within the framework of opposition or adequacy of relations between an order and project; the ground of necessity of the stylistic program is given as one of factors of determination of algorithms of planning of dwelling interior taking into account mental fi lters and cultural potentials of customer and performer. Determination of term “ of контрастильность” is given as it applies to the choice of receptions of harmonization of dwelling environment. The choice of project strategy and methods of implementation of the stylistic program is off ered depending on qualifi catory the program of descriptions, spatial potential of initial situation and dualism of the put tasks
THE CLUSTER STRATEGY FOR SUSTAINABLE DEVELOPMENT OF THE AGGLOMERATION ON THE EXAMPLE SAMARA-TOGLIATTI AGGLOMERATION
Authors: ACHMEDOVA Elena Aleksandrovna , ZHOGOLEVA Anna Vladimirovna
Published: October 2018

The article considers the actual cluster approach to planning for sustainable development of the agglomeration territories. The authors base their study on the frame structure built in the Metropolitan area of educational, industrial, economic and fi nancial information exchange networks. The article concludes, that the urban planning policy of development of the Samara-Togliatt i agglomeration based on cluster strategy, will allow the universities in the region, including support to the University, national research University create a platform of innovation cluster infrastructure of the region.
VIRTUAL ARCHITECTURE OF MEGAPОLIS PUBLIC BUILDINGS
Authors: VORONTSOVA Yulia S. , KARAKOVA Tatiana V.
Published: October 2018

The article reveals the aspects of virtual architecture as a new design philosophy, operating an idea of combining of real and digital (virtual) reality and abandoning the traditional space metrics. New approaches to the organization of architectural space, as well as techniques for visual expansion and transformation of space using the latest technologies and materials are considered. The relationship between virtual and real architecture in the space of megacities is determined as well as visual illusions arising from the interaction of these relations. Diff erent manifestations in virtuality as video-mapping, media facades, etc. are analyzed.
MODERN METHODS OF AERIAL PHOTOGRAPHY FOR ARCHITECTURAL AND PLANNING ANALYSIS OF CULTURAL HERITAGE OBJECTS
Authors: LITVINOV Denis V.
Published: October 2018

In the article the results of research works of a large-scale object of cultural heritage of the Earth mound of the Krasnoyarsk fortress with application of aerial photography from the unmanned aerial vehicle are presented. The Krasnoyarsk fortress is a unique monument of military fortifi cation architecture of Russia of the fi rst half of the XVIII century and one of the largest defensive lines in Russia, created for protection of the southeastern edge of the European Russia against att acks of nomads. The results of vertical and oblique aerial photography allow to reveal the general architectural and planning composition of the Earth mound of fortress as well as to see all the area of a complex and to defi ne the territorial unity with other fortifi cation constructions. The methods of use of unmanned aerial vehicles give materials about the object in study and allow to bind its spatial location to the coordinate system of the terrain, to create three-dimensional model of the area, to compare the received images with the available historical cards and plans, which will signifi cantly facilitate the task of registering the Fortress with the security authorities and withdrawing its territory from economic use.
«THEORY OF ARCHITECTURE» OF A. I. NEKRASOV IN THE CONTEXT OF THE PHILOSOPHY OF SPACE
Authors: ORLOV Dmitry N. , ORLOVA Natalia A.
Published: October 2018

The article gives a brief overview of the main philosophical and cultural approaches to the problem of space in architecture. There are three main approaches - utopian (or hypothetical), normative, and refl ective. The importance of professional architectural discourse on the subject as one of the most complete is emphasized. The famous work of A. Nekrasov “Theory of architecture” which presents a holistic, detailed, allowing extrapolation of new historical material, the concept of evolution of architectural form and space is discussed. Analysis of the work of Nekrasov is given in the context of his philosophical concepts. The assumption about cultural interdisciplinary importance of the work of Nekrasov is put forward with the aim of involving architecture into the general cultural discourse of culturologists and philosophers.
PROBLEMS AND PROSPECTS OF OPTIMIZING OF CITIES LIGHT ENVIRONMENT
Authors: ORLOVA Lyudmila N.
Published: October 2018

The problem of optimizing the light environment of cities is one of the major problems in current urban planning. Natural light environment is a distribution of the optical radiation spectrum in space, perceived in the form of visual and other psycho-physiological reactions and physical and biological state of the environment of his life. Health and sanitary-epidemiological welfare of the population, municipal economy, effi - ciency of capital investment in the construction and preservation of non-renewable natural energy resources of the country are determined by level of utilization of natural light. In article on the basis of the study methodological bases of formation of the light environment are proposed and a number of promising directions of optimization as the main formative, environmental and economic factors of structural-spatial development of cities are revealed.
COMPENSATED DISTRIBUTION LINE WITH INCREASED NATURAL LOADING
Authors: KUVSHINOV Aleksey A. , VAKHNINA Vera V. , CHERNENKO Aleksey N.
Published: October 2018

Two ways of increasing of a distribution line natural loading with losses up to the capacity level, limited by the economic current density or by the current density of a heating of phase conductors are considered. The article shows that crosscurrent capacity compensation does not impose technical limitations on the possibility of natural loading of a distribution line increasing, in contrast to series capacitance, whose capabilities are limited by the active resistance of phase wires. The ratio of crosscurrent capacity compensation necessary to increase natural load of a distribution line to the capacity level limited by the economic current density or allowable by the current density of a heating of phase conductors is determined.
CALCULATION OF THE ADVANCED REINFORCED CONCRETE DIE UNDER IMPULSE LOADING
Authors: SNEGIREVA Antonina I. , KRETOV Dmitry Aleksandrovich
Published: October 2018

The description of the model of reinforced concrete die for hydraulic stamping developed in the framework of scientifi c and practical work is provided. This invention diff ers from existing analogues in its increased durability. For the die the calculation method is developed and equations of motion of the structural elements for the explosive load are made up. A theoretical calculation of the structure in the mathematical environment of Mathcad is carried out. The obtained data are compared with earlier researches. By comparison the advanced die is less susceptible to deformation than the existing model. Thus the proposed die is more durable.
RESULTS OF EXPERIMENTAL RESEARCH OF REINFORCED CONCRETE BEAMS RESISTANCE IN THE ZONE OF SHEAR BENDING
Authors: FILATOV Valery B. , GORYNTSEV Vladislav O. , BINDER Valery P.
Published: October 2018

The results of an experimental study of the strength and stress-strain state of reinforced concrete beams in the zone of shear bending are presented. The study was carried out on samples with a small percentage of longitudinal section reinforcement. The technique of testing, data on the rigidity and crack resistance of test specimens under loading, the nature of their destruction are presented. Comparison of experimental values of failure loads with calculated values obtained by the methods of domestic and foreign design standards is performed. It is shown that the empirical basis of the calculation methods limits the range of satisfactory correspondence between the calculated and experimental values of the strength of inclined sections of reinforced concrete beams under the action of shear forces. The conclusion is made about the need to improve the design models to ensure the constructive safety of design solutions.
DEVELOPMENT AND RESEARCH OF HIGH EFFICIENT FANS OF RECUPERATORS FOR DECENTRALIZED INSTALLATION IN RESIDENTIAL COMPLEXES
Authors: MATVEEV Andrey G.
Published: October 2018

The article deals with the introduction of decentralized fans of recuperators of exhaust air heat, including using high-heat-conducting heat pipes with an intermediate coolant as a heat exchanger. The considered criteria form a comparative basis for the developed designs of heat recuperators for ventilation air in buildings, including heat pipes. The energy and economic effi ciency of such recuperators is analyzed. Areas are singled out where the use of heat recuperators is much more eff ective than increasing the capacity of heat pumps. As a result of ongoing research, cooling or heating modules based on aluminum, aluminum-copper radiators with integrated heat pipes will be developed as innovative products.
THE DEPENDENCE OF THE PHYSICO-CHEMICAL COMPOSITION OF DRINKING WATER SAMARA FROM THE MAGNITUDE OF ITS ZETA-POTENTIAL
Authors: KICHIGIN Viktor I. , ZINOVIEVA Valeria V. , ZOLOTENKOV Victor O. , ZOTKINA Lesya A.
Published: October 2018

The results of studies of physicochemical composition of drinking water and the magnitude of its Zeta potential establishing the degree of dependency of these indicators. Samples were taken in winter and summer. It is shown that variation of values for such parameters as alkalinity, hardness, contents of Ca2+ and Mg2+ slightly on the individual areas of sampling. It is established that values of indic ators of quality of drinking water from underground water intakes was more stable than from a surface source. In artesian water values the Zeta potential (ζ-potential) was 3-7 times lower than in the Volga. The alkalinity of the water year was slightly above winter. There were relations between the value of the Zeta potential and alkalinity of the water as well as turbidity and hardness. In most cases, the magnitude of the accuracy of the approximation was greater than 0.9.
PURIFICATION OF NATURAL WATERS OF IRON AND MANGANESE
Authors: NAZAROV Vladimir D. , NAZAROV Maxim V. , RAZUMOV Vladimir Yu. , DRYOMINA Maria A. , OSIPOVA Anna A.
Published: October 2018

It is established that application of the latest material and reagents for preparation of drinking water, allows to increase a loading fi lter run due to small contaminant capacity of the mineral fi ltering material and to lower economic costs by reagent economy as effi ciency of water purifi cation is reached even in case of its small doses.
STRESS-STRAIN STATE OF ECCENTRICALLY COMPRESSED REINFORCED CONCRETE COLUMNS OF CIRCULAR CROSS-SECTION
Authors: MORDOVSKY Sergey S. , DAVLIKAMOV Rustam I.
Published: October 2018

Theoretical studies of reinforced concrete eccentrically compressed columns of circular cross-section on strength indexes are analyzed. These studies rely on the use of a nonlinear deformation model that approximates the work of concrete to real experimental conditions. A comparative analysis of the results of calculating the strength of reinforced concrete columns of circular cross-section is carried out according to the methodology proposed in the current set of rules, is the author’s program for determining the stress-strain state of a reinforced concrete column of circular cross-section implemented in the MathCad software environment. The results of a numerical experiment are compared in the form of a fi nite-element model in the Lira-CAD program complex using a nonlinear deformation model. Calculations and schemes are given taking into account the possibility of conducting an experimental study.
ENSURING ENVIRONMENTAL SAFETY IN THE CONDITIONS OF ENVIRONMENTAL POLLUTION BY CADMIUM
Authors: ZAKIROVA Marina N. , CHUPRINA Elena V.
Published: October 2018

Technological processes are considered and the industries that are the source of cadmium entering the environment are identifi ed. The materials, raw materials and technologies promoting pollution of air with Cd-containing emissions are determined. The ways of gett ing cadmium into the human body are considered. The negative consequences of accumulation of heavy metal in the human body are estimated. The method of atomic absorption spectroscopy was used to study food products for the content of cadmium in them. Studies allow to regard cadmium as a super-toxicant of the environment due to its widespread prevalence and extreme danger. The measures of a technical and medico-prophylactic nature to limit the effects of cadmium on humans are proposed.
PRINCIPLES AND METHODS OF ARCHITECTURAL ADAPTATION OF HISTORICAL COMPLEXES AND BUILDINGS
Authors: LESHINA Ksenia S. , SYSOYEVA Elena A. , SLASTENIN Petr V.
Published: October 2018

The urgency of preservation and adaptive use of historical buildings and structures is considered. As a key idea, a position is formulated on the most important role of industrial enterprises in the history of the formation of the city of Samara, the importance of these buildings as valuable heritage objects and the need for their preservation and development. Foreign analogues are considered on the basis of which the principles and methods of architectural solutions of the adaptation of historic buildings and complexes for modern use are revealed. It is concluded that in the cities of Russia, including Samara, there are many objects that need to be preserved, restored and reused. The accumulated foreign experience can help in drawing up a theoretical and practical basis for preserving the heritage.
ELEMENTS OF ARTIFICIAL ENVIRONMENT
Authors: ORLOVA Natalia A. , ORLOV Dmitry N.
Published: October 2018

The work is based on the concept based on the understanding that the human environment is not only a problem of architecture or urban planning, it is a comprehensive interdisciplinary array of knowledge about the set of factors that form the man - made environment and no fewer factors emanating from this environment. In this article, an att empt, is made to complete the hierarchical classifi cation of heterogeneous processes and phenomena associated with the artifi cial environment. The kind of logic of classifi cation, structure and allocation of links between heterogeneous phenomena and factors shows the specifi cs of the interaction of nature, human and technology as a special three-way symbiosis of mutual infl uence, consistency and mutual conditionality of these global phenomena. This trichotomy of the artifi cial environment in our opinion is a new approach to understanding the problem and the formation of methods of strategic planning and design.
AUTHENTICATION OF NOVGOROD SCHOOL OF ANCIENT RUSSIAN TEMPLE ARCHITECTURE
Authors: CHENPALOV Mark F. , ZHURAVLEV Mikhail Yu.
Published: October 2018

Taking into account the historical context the characteristic features of the Novgorod architectural school of Orthodox temple architecture of the 12th-15th centuries are explored. A comparative analysis of the most signifi cant objects of this period is carried out. The process of formation of the Novgorod style is traced. The volume-spatial and architectural-artistic features of a number of buildings are listed and described. A conclusion is drawn about authentic elements and expressive methods characteristic of this direction.
EVOLUTION OF PERCEPTION OF THE VALUES OF HISTORICAL ARCHITECTURE IN FORMATS OF TIME / FORMS / CONTEXT
Authors: BALZANNIKOVA Ekaterina M. , ARTEMYEVA Tatyana G.
Published: October 2018

The specifi cs of the evolution of perception of the value of historical architecture in the formats of time, form and context are revealed. The place and character of the history of architecture relative to the general history of mankind and the history of other types of society activity is determined. The substantiation of the value fi elds of historical architecture in time, form and context formats is provided with the identifi cation of the specifi cs of their integrated assessment in order to determine the prospects for the existence of a historical architecture. The defi nition of the physical and metaphysical contextuality of the historical architecture is given taking into account its bifunctional essence. Typical predictive assessments of the prospects for the existence of historical architecture are given.
SEMANTICS OF THE HOUSE CARVING OF SAMARA
Authors: KOTENKO Irina A. , KHARITONOVA Anastasia S.
Published: October 2018

The article tells about the semantics of carved ornaments of ancient wooden houses in the city of Samara and explores the ornamental features of the wooden and stone-wooden buildings of the city, built in the late 19th century. Relying on the studies of historians who studied the culture of Ancient Rus, the authors show that the semantics of the wooden carving of the city of Samara is closely related to the pagan beliefs of the ancient Slavs and the folk traditions of applied art and craft. The authors cite the classifi cation of the main parts and elements of buildings decorated with house carvings, emphasizing the connection between the ornament and its location on the houses in accordance with the model of the pagan universe and the magical-spellcasting rites of the ancient pagans. The article analyzes the existing types of house carvings in the city, illustrates the construction of traditional ornamental composition, the geography of thematic infl uences and traditional crafts. At the same time, a conclusion is drawn about the high variety of compositions and the uniqueness of the Samara wooden carving of each old house.
TECHNOLOGICAL PARAMETERS OF WELDING DURING THE REINFORCEMENT OF STEEL TRUSSES COVERING INDUSTRIAL BUILDINGS
Authors: RODIONOV Igor K. , RODIONOV IGOR I.
Published: October 2018

The main provisions of rational reinforcement technologies are presented by the method of increasing the cross-section of compressed and stretched rods from pairs of rafter trusses covering industrial buildings. The justifi cation of the technology is given from the position of the available thermal eff ect of welding in this case. Criteria are given for the safe conduct of welding operations at any level of load. Theoretically, the advantages of this technology over known technological schemes are substantiated. On a concrete example the issues of the present interrelation of technical, ecological and economic aspects are considered.
ON THE THEORETICAL STUDY OF THE HYDRODYNAMIC CHARACTERISTICS OF VISCOUS INCOMPRESSIBLE FLUID FLOW IN GAPS OF VARIABLE HEIGHT
Authors: KRESTIN Evgeny A.
Published: October 2018

The analysis of the operation of precision pairs is given in the presence of distortions and misalignments between the plunger and the cage. The fl ow of a viscous incompressible fl uid during the pulsation of the pressure drop and the oscillation of the plunger by periodic arbitrary laws in annular gap gaps with a variable eccentricity along the channel length is considered. A plane channel fi lled with a viscous incompressible fl uid with an angle of inclination of the upper wall to the lower one is considered. The upper wall performs arbitrary periodic motions in its plane, the pressure diff erence at the ends of the channel also varies according to an arbitrary periodic law, but with some other period. The problem is solved in the polar coordinate system. Since the boundary-value problem does not have an exact analytic derivation, an approximate analytic solution is found
ANALYSIS OF EXISTING METHODS OF CONSTRUCTION FROM MONOLITHIC CONCRETE AND REINFORCED CONCRETE IN WINTER CONDITIONS
Authors: RYAZANOVA Galina N. , POPOVA Daria M.
Published: October 2018

The advantages of monolithic concrete and reinforced concrete in comparison with traditional technologies are considered. The evaluation of the structure of construction technology is given. The analysis of the main methods of winter concreting with the development of the structure of heating and non-heating methods is given. The main methods of maintaining concrete and reinforced concrete at negative ambient temperatures are described. An algorithm for estimating the methods of winter concreting for technical and economic indicators is developed: labor costs and electricity consumption. Prospects for the development taking into account the technical and economic eff ectiveness of the option of combining non-heating and heating methods for further investigation are outlined.
ANALYSIS OF CONSTRUCTIVE PERFORMANCE OF STANDARD MODULAR BUILDINGS
Authors: SHIROKOV Viacheslav S. , SOLOVIEV Aleksey V.
Published: October 2018

The design of modular buildings of transforming sub-stations is considered. On the base of the calculation of the main load-bearing elements the structural solution of the block modules is analyzed. The main problem is the use of modules of the same design in buildings with diff erent layout schemes and equipment loads. The purpose of the work is to identify the most important general patt erns of modular buildings from the engineering and construction point of view. It is determined that for various structural elements the tests from diff erent combinations of loads and layout schemes are leading. The problem of horizontal rigidity of block-modules is considered. Special att ention has been paid to the design of the node joints of columns with horizontal elements as the most important.
METHOD FOR CALCULATING HEAT PIPES THAT DIVERT HEAT FROM THE HEAT-EMITTING SURFACE
Authors: LUKS Alexander L. , MATVEEV Andrey G. , ZELENTSOV Danila V.
Published: October 2018

The results of complex studies of the parameters of the heat-conducting collectors, development of the methods for their calculation are presented. The main diffi culty in this case is the calculation of the design and parameters in the region of the contact zone between the heat pipe and the heat-generating surface. It is shown that the calculation methods used for convective collectors can not be applied to collectors with heat pipes in which the elements do not depend on each other. It is established that semiempirical models provide an opportunity to study the specifi cs of the processes taking place in the reservoir, the degree of their infl uence on its effi ciency. The simplifi ed calculation technique proposed in this article allows us to make the required estimates and calculations at the engineering level.
PREPARATION OF WATER FOR THE OPERATION OF BOILER AND HEATING NETWORKS IN THE DISTRICTS OF THE CITY OF SAMARA, CITIES AND TOWNS OF THE SAMARA REGION
Authors: MINKINA Svetlana A. , NEGODA Larisa L. , KURMAYEVA Tatyana S.
Published: October 2018

The problem of water quality is considered for the operation of boiler and heating networks in the example of the districts of the city of Samara, as well as cities and towns of the Samara region. The results of the chemical analysis of natural waters in the areas of the city of Samara, cities and towns of the Samara region are presented. As the main quality indicators in the choice of water preparation methods, the total hardness, carbonate hardness, the dry residue of the initial water, the hydrogen index are considered. Based on water quality indicators, recommendations are given on the choice of water treatment methods in boiler rooms for boilers of various types and depending on their thermal capacity. Att ention is focused on the correct choice of the softening method depending on the water quality indicators.
How to Identify Retinoblastoma in Pediatric Patients
Authors: Prakhunhungsit Supalert ,   Retina Unit, Ophthalmology Department, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand,   Retina Department, Bascom Palmer Eye Institute, FL, US
Published: October 2018

Retinoblastoma is the most common primary intraocular tumor in pediatric patients. The incidence accounts for 1 in 20,000 live births. With the improvement of treatment alternatives the survival rate of these patients has improved in recent years, with up to 95% survival in the US. The use of multimodal investigations including ultrasonography, computed tomography, magnetic resonance imaging, and wide-field fundus photography with intravenous fluorescein angiography is crucial to identify retinoblastoma in pediatric patients.
Pearls for Treating Retinoblastoma
Authors: Shah Sona N ,   Children’s Hospital Los Angeles, Los Angeles, CA, US,   University of South California (USC) Roski Eye Institute, University of Southern California Keck School of Medicine, Los Angeles, CA, US, Berry Jesse L ,   Children’s Hospital Los Angeles, Los Angeles, CA, US,   University of South California (USC) Roski Eye Institute, University of Southern California Keck School of Medicine, Los Angeles, CA, US
Published: October 2018

Retinoblastoma is a primary intraocular cancer that develops in the eyes of children. The vast majority of retinoblastoma tumorigenesis is initiated by a mutation in the RB1 gene on chromosome 13q. This practice pearl will discuss the current treatment modalities for this pediatric tumor, with the primary goal of saving the child's life. With recent treatment advances, more emphasis has been placed on successfully saving the eye, often with useful vision.
Emerging Treatments for Non-infectious Uveitis
Authors: Banker Alay S ,   Banker’s Retina Clinic and Laser Centre, Gujarat, India, Pavesio Carlos ,   Moorfields Eye Hospital, London, UK, Merrill Pauline ,   Rush University Medical Center, Chicago, IL, US
Published: October 2018

The primary goals of treatment in patients with non-infectious uveitis (NIU) are to control ocular inflammation and prevent sight-threatening complications such as macular edema and glaucoma. Systemic corticosteroids are the mainstay of treatment in NIU of the posterior segment (NIU-PS); however, long-term use is associated with treatment-limiting adverse effects. The need for agents with improved safety and tolerability coupled with recent insights into the pathogenesis of NIU-PS have led to the development of novel targeted interventions that potentially reduce or eliminate systemic corticosteroid exposure. Targeted interventions include intraocular drug delivery systems that provide high local concentrations at the site of inflammation with low systemic exposure and therapeutic agents, such as monoclonal antibodies that target specific pro-inflammatory cytokines and cytokine-mediated signaling pathways. The expanding range of therapeutic options enhances the ability to tailor therapy according to individual patient circumstances and optimize outcomes in patients with NIU-PS.
Optical Coherence Tomography Angiography
Authors: Nagpal Manish ,   Retina Foundation, Gujarat, India, India Gujarat ,   Retina Foundation, Gujarat, India
Published: October 2018

Optical coherence tomography angiography (OCTA) is a new revolutionary non-invasive imaging modality, built on the platform of optical coherence tomography (OCT). This technique works on the principle of ‘decorrelation’ and is still a nascent technology in its infancy with tremendous potential applicability for diagnosing retinal and choroidal vascular diseases. Its non-invasive nature, and the ability to generate images of retinal and choroidal vasculature, allows it to replace and/or supplement the current angiographic gold standards, fluorescein angiography (FA) and indocyanine green angiography (ICGA), if not in all but certainly in most retinal and choroidal pathologies. Still, there exists a major challenge in terms of its wide-scale availability, equipment and processing techniques, presence of artifacts, limitations of imaging capability, and lack of common vocabulary among retinal specialists for interpretation. In this review we intend to describe this novel technique by highlighting its key features, and comparing it with FA and ICGA. We will also discuss its applicability in various clinical scenarios such as diabetic retinopathy, age-related macular degeneration, retinal venous occlusion, choroiditis, and in routine practice. Further studies are needed to more definitively determine OCTA’s utility in the clinical setting and to establish if this technology may offer a non-invasive option of visualizing the retinal vasculature in detail.
Update in Vitreoretinal Instrumentation
Authors: González-Saldivar Gerardo ,   Department of Ophthalmology, University of Toronto, St. Michael’s Hospital, Toronto, Canada, Chow David R ,   Department of Ophthalmology, University of Toronto, St. Michael’s Hospital, Toronto, Canada
Published: October 2018

Over the past 45 years, vitreoretinal surgery has evolved considerably. Today, retinal surgeons have access to a wide variety of instruments for micro-incision vitrectomy surgery, which will result in more comfortable, safer, and efficacious surgery. We aim to expose some of the most relevant innovations for vitreoretinal surgery.
The role of multiple vessel doppler ultrasound in predicting neonatal outcome in pregnancy induced hypertension
Authors: Gadhavi Vijay N. , Gadhavi Mansi K.
Published: October 2018

Background: Hypertensive disorders are among the commonest medical disorders during pregnancy and continue to be a major cause of maternal and perinatal morbidity and mortality.Methods: In this study total 100 cases and their doppler findings were recorded, Cases of PIH between 20 - 36 weeks of gestation in 2 years with B.P ≥140/90 mm hg and protienuria ≥1+ in this prospective analytical study investigations and color doppler scanner for studying uterine, umbilical PI, RI and fetal middle cerebral arteries as the indicator to evaluate perinatal outcome.Results: Increase incidence of low birth weight (less than 2.5) observed in group of umbilical and uterine PI was (>1.5,>1 respectively)67% and 83%. Apgar score at 5 minutes <7 58%and 61%, NICU admission 46% and 45%, perinatal mortality 42%and 45% respectively. for group of umbilical artery and uterine artery RI (>0.7, >0.6respectively) newborn delivered with weight less than 2.5 kg 76% and 80%, Apgar score at 5 minutes <7 33% and 80%, NICU admission 46% and 50%, perinatal mortality 60%and 42% more than that of with group of low RI. High rate of incidence seen where MCA PI < 1.3,90% newborns less than 2.5 kg birth weight,70% poor Apgar score at 5 minutes. abnormal ductus venosus group shows birth weight <2.5 kg 83%, Apgar at 5 minutes < 7 were 81%, NICU admission were 39%and perinatal mortalities 78% higher than normal ductus venosus group.Conclusions: The sensitivity of the Doppler significantly increased by studying multiple vessels (91.6%) of in the fetoplacental circulation. It would predict early compromise of blood supply to the fetus at the stage when the fetus is still not compromised and if timely measures are taken it helps in improvement of perinatal out-come.
Effectiveness of safe child birth checklist on maternal and perinatal outcomes in tertiary level hospitals
Authors: Varaganti Neelima , Sangabathula Himabindu , Guthi Visweswara Rao
Published: October 2018

Background: The World Health Organization (WHO) estimates nearly 2,87,000 maternal deaths, 1 million intrapartum related stillbirths and another 3 million new born deaths during the neonatal period against more than 130 million births each year. Intrapartum perinatal mortality, the deaths that occur during the period around birth, is a major problem in developing countries Objective of this study is to study the effectiveness of safe child birth checklist on maternal and perinatal outcomes in tertiary level hospitals.Methods: This study is a hospital based prospective interventional study conducted at MGMH, Petlaburzu hospital, Hyderabad, Telanagana, which is a tertiary care hospital comes under Osmania medical college. 635 deliveries were followe up without SCC and 620 deliveries were followed up with SCC.Results: There was significant improvement in starting of partograph at the time of admission with SCC (20% vs 32.2%), more number of cases required to start antibiotics in with SCC group compared to without SCC. Just Before and during Birth (or C-Section) without SCC group significantly more need to start Antibiotic compared to with SCC group (15.7% vs 11.3%) and active management of third stage of labour was significantly more among with SCC group (94.5% vs 96.9%).Conclusions: In final mortality and morbidity outcomes of delivery i.e. maternal and perinatal, the effectiveness of implementation of safe child birth check list has no significant effect though there were improved set of certain practices during the child birth process.
Computed tomography scan findings in eclampsia: a prospective study
Authors: Rajeswari K. S. Raja , Niranjana R.
Published: October 2018

Background: Eclampsia is a leading cause of maternal death, with classical neurological symptoms that include headache, nausea, vomiting, cortical blindness, coma and convulsions. Computed tomography (CT) scan helps in diagnosing and management of eclampsia in pregnant women. The present study was done with the objective to analyse the findings of CT scan of brain in eclampsia, to identify the prevalence of neurovascular complications in these cases and to determine if these findings can be of value in determining the prognosis of this disorder.Methods: This was a prospective study done on 100 patients with eclampsia. All of the 100 patients were screened with CT scan brain at Institute of Obstetrics and Gynaecology, Egmore, Chennai during the period from August 2008 to August 2009. All the data were analyzed and compared between the groups of positive CT scan and negative CT scan observations.Results: Out of 100 patients, positive CT scan findings were noticed in 15 patients. Of them, 7 patients expired, and 8 patients survived after treatment. Of the expired patients (7), 5 of them expired due to brain haemorrhage, and 1 patient died with cerebral oedema and 1 with brain infarction. Cerebral odema (46%) was the most common positive CT finding.  Parietal region of brain was the most common (40%) affected area.Conclusions: CT scan of brain provides valuable information in determining the prognosis and the prevalence of neurovascular complications in Eclampsia.
Dinâmica das Relações Interacionais em Fóruns de Discussão em um Curso de Graduação a Distância Representada por Sociogramas
Authors: Paixão Germana Costa , Souza Racquel Oliveira da Silva , Lima Fátima Aurilane de Aguiar , Pinheiro João Paulo Silva , Pantoja Lydia Dayanne Maia
Published: October 2018

O trabalho analisa a dinâmica das relações entre alunos, professores e tutores em fóruns de interação de um curso de graduação em Ciências Biológicas. Para tanto, o nível de interação foi observado em fóruns de discussão de quatro disciplinas curriculares e representadas por sociogramas elaborados com o software Pajek®. Percebeu-se que o aluno desempenha papel central nas discussões e na construção do processo de ensino aprendizagem e que sua participação nas disciplinas se torna progressivamente mais autônoma como o desenvolvimento temporal do curso. Observou-se ainda que a quantidade de participações nem sempre está diretamente relacionada com a qualidade, já que os alunos que mais postaram comentários nem sempre geraram interações significativas. Logo, é possível inferir que os sociogramas são ferramentas importantes para interpretação dos dados e avaliação de participação de alunos, professores e tutores em fóruns de discussão.
Design of Prototype Payment Application System With Near Field Communication (NFC) Technology based on Android
Authors: Ubaya Huda
Published: October 2018

Since the late 1990s, people have enjoyed a comfortable lifestyle. Mobile devices supported by the development of wireless networks have spread throughout the world. People can get information, order tickets, download songs and perform commercial transactions, called mobile commerce. Mobile commerce applications become the most popular application for mobile device users who want to do business and financial transactions easily and securely, anytime and anywhere they are. Today the use of physical cash is experiencing a decline in popularity in the business world, because it is being replaced by non-physical payments are often called electronic money (e-money). An important technology behind mobile payments is called Near Field Communication (NFC). As an indication that the NFC has tremendous business potential, leading companies like Nokia, Microsoft, Visa Inc., and MasterCard Worldwide and NXP Semiconductors, is actively engaged on them. Payment processing integrated with NFC technology based mobile operating system that is a trend today is Android that support NFC technology is version 2.3.3 Gingerbread. The prototype application is designed to pay for 2 on the user side of the user as consumer and the merchant side as a trader or seller by using the handset that already have NFC technology is Google Samsung Nexus S. Pay an application prototype also implements the concept of security in e-commerce transactions by using the protocol-to-Tag Tag so that the user needs for security and comfort during the financial transaction are met.
Analysis of Intercarrier Interference Cancellation Scheme in OFDM Systems
Authors: Almisbah Nasir Salh , Saad Elessaid S
Published: October 2018

Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi-carrier modulation scheme, which has been adopted for several wireless standards such as IEEE 802.11a and HiperLAN2. In OFDM systems, the performance is very sensitive to subcarrier frequency errors (offset). This paper shows the analysis and derivations of intercarrier interference (ICI) complex gain that used in self-cancellation scheme and its dependence on subcarrier frequency offset. Simulation shows that better improvement in performance is achieved for systems that use this cancellation scheme. Moreover, analysis and simulation show that theoretical carrier-to-interference ratio (CIR) for OFDM with cancellation scheme is greater than conventional one by more than 14dB.