bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Slightly Upward and Downward Inclined Pipes on the Stability of Gas-Oil Two-Phase Flow
Authors: Sabzi Peyman , Noroozi Saheb
Published: October 2019

Pipeline inclination has an important effect on the stability of two-phase flow and flow assurance in the pipeline. This inclination may be intentional; it may be inevitable in pipeline installation; or it may be due to an error in pipeline installation. In this situation, even the slight inclination of the pipe plays an important role in the growth or elimination of the instability of the two-phase flow. In this study using a code designed for the analysis of pipelines’ two-phase flow, the stability of the two-phase flow for Kerosene oil flow along with methane gas has been compared in downward inclined pipes, upward inclined pipes, and horizontal pipes. Using the mentioned computer code, it has been proved that the pipe’s upward inclination results in the increase of two-phase flow instability, while the pipe’s downward inclination is helpful in two-phase flow stability. In order to model two-phase flow in the pipe, two-fluid model has been used. This model considers each phase separately and the equations of mass conservation and momentum are written for each phase. The momentum exchange between the two phases and between each phase and the pipe wall has been considered. Conservation equations have been solved using SIMPLE algorithm in a numerical form with finite volume method.Keywords: Pipes, Two-Phase Flow, Inclined Stability, Two-Fluid Model
Microstructural Dependency of Diffusion in Glass Flake-Reinforced Vinyl Ester Resins
Authors: Pajarito Bryan B. , Kubouchi Masatoshi , Tomita Hiroyuki , Aoki Saiko
Published: October 2019

Vinyl ester resins are utilized for long-term corrosion protection of metal, alloy, and concrete substrates against concentrated acids, alkalis, and solvents at high temperature. Glass flakes are usually added as fillers to reduce chemical diffusion within the vinyl ester matrix. A common industry practice is to use glass flakes with large aspect ratio, high volume fraction, and in parallel alignment to surface in chemical contact for barrier applications. During processing and curing of glass flake-filled vinyl ester resins, irregular microstructures such as reduced flake aspect ratio and random orientation of flakes are commonly observed. Such microstructures can affect the overall chemical diffusion, resulting to barrier properties less predictable by simple diffusion models. Therefore, in this study, a simple 2D random walk simulation procedure is used in attempt to estimate the microstructural dependency of diffusion in glass flake-reinforced vinyl ester resins. While the random walk simulations are in good agreement with the tortuosity-based diffusion models in terms of microstructural effects, in most cases the simulation results are inconsistent with the experimental measurements of acid diffusion in glass flake-filled vinyl ester resins. A possible cause for this is the poor adherence of vinyl ester resin to glass flakes. Osmotic cracks are also formed during immersion which also influences overall diffusion through the material.
Natural Colorants from Cosmos Sulphureus Cav. and Tagetes Erecta L.: Extraction And Characterization
Authors: Rahayuningsih Edia , Wikansari Dyah A , Setiawan Hendrik
Published: October 2019

Ionic liquids demonstrated successful potential applications in the industry most specifically as the new generation of solvents for catalysis and synthesis in chemical processes, thus knowledge of their physico-chemical properties is of great advantage. The present work presents a mathematical correlation that predicts density of binary mixtures of ionic liquids with various alcohols (ethanol/methanol/1-propanol). The artificial neural network algorithm was used to predict these properties based on the variations in temperature, mole fraction, number of carbon atoms in the cation, number of atoms in the anion, number of hydrogen atoms in the anion and number of carbon atoms in the alcohol. The data used for the calculations were taken from ILThermo Database. Total experimental data points of 1946 for the considered binaries were used to train the algorithm and to test the network obtained. The best neural network architecture determined was found to be 6-6-10-1 with a mean absolute error of 48.74 kg/m3. The resulting correlation satisfactorily represents the considered binary systems and can be used accurately for solvent related calculations requiring properties of these systems.
Ink-jet printing for Plasma-treated Cotton Fabric with Biomaterial
Authors: Kan C.W. , Yuen C.W.M. , Tsoi W.Y. , Chan C.K.
Published: October 2019

Currently, sodium alginate is commonly used for preparing the printing medium for digital ink-jet printing due to its ready solubility and excellent stability even at high-temperature fixation treatments. Similar to sodium alginate, chitosan is also widely used as novel biomaterial. As a natural polymer, sodium alginate and chitosan are biocompatible, biodegradable and non-toxic. Therefore, chitosan may be used as a chemical for preparing printing medium for digital ink-jet printing for cotton fabric. Recently, low temperature plasma (LTP) treatment has proved to be an effective pretreatment method for the improving coating process by altering the surface properties of the material without much changing of the bulk properties. Thus, the aim of this study was to investigate the possibility of applying LTP treatment as pretreatment process to enhance the coating of printing medium, i.e. sodium alginate and sodium alginate/chitosan mixture, so as to improve the final properties of the digital ink-jet printed cotton fabric.
Two-degree-of-freedom Controller Design for Uncertain Processes Using Input/output Linearization Control Technique
Authors: Sukkarnkha Pisit , Panjapornpon Chanin
Published: October 2019

In this work, a new control method for uncertain processes is developed based on two-degree-of-freedom control structure. The setpoint tracking controller designed by input/output linearization technique is used to regulate the disturbance-free output and the disturbance rejection controller designed is designed by high-gain technique. The advantage of two-degree-of-freedom control structure is that setpoint tracking and load disturbance rejection controllers can be designed separately. Open-loop observer is applied to provide disturbance-free response for setpoint tracking controller. The process/disturbance-free model mismatches are fed to the disturbance rejection controller for reducing effect of disturbance. To evaluate the control performance, the proposed control method is applied through the example of a continuous stirred tank reactor with unmeasured input disturbances and random noise kinetic parametric uncertainties. The simulation results show that both types of disturbances can be effectively compensated by the proposed control method.
Modeling of the Drying Kinetics of Slurry Droplet in Spray Drying
Authors: Golman Boris
Published: October 2019

The detail analysis of the heat and mass transfer between the droplet containing suspended solids and the drying gas was carried out numerically. The temperature and moisture distributions within the slurry droplet were calculated during the first and second drying phases. The parametric study revealed that the droplet drying time decreases with increasing the drying gas temperature and decreasing the droplet diameter.
Pulping Of Vetiver Grass With NH4OH-KOH-AQ Mixtures
Authors: Chandranupap Panitnad , Chandranupap Pravitra
Published: October 2019

The aim of this work was to study the effects of various experimental parameters on vetiver grass (Vetiveria nemoralis A. Camus) pulping. Mixtures of NH4OH-KOH were used as cooking liquors. The caustic potash did not only reduce the NH3 usage and cooking time, but also provided a potassium source as a fertilizer in the black liquor. Anthraquinone (AQ) was added in certain amount as cooking catalyst. The experiment was conducted following a central composite design involving three pulping variables (amount of KOH: 3.5 to 7% on oven-dried sample, amount of NH4OH : 25 to 45% on oven-dried sample, and cooking temperature : 145 to 160°C). The quantity of anthraquinone was fixed at 0.1% on oven-dried sample. Pulping time was fixed at 2 hours and liquid-to-oven-dried sample ratio was 8:1. Responses of pulp properties to the process variables were analyzed using DESIGN-EXPERT®, a computer-aided design of experiment software. The pulp properties revealed that this pulp is capable for making of printing and writing paper. Furthermore, this study provided a new pulping process for vetiver grass to reduce problems of discharge black liquor.
Kinetic Study of Esterification of Free Fatty Acid in Low Grade Crude Palm Oil using Sulfuric Acid
Authors: Satriana Satriana , Supardan Muhammad Dani
Published: October 2019

The kinetics of the esterification of free fatty acids (FFA) in low grade crude palm oil (CPO) with methanol was studied. In this work, the effects of operational variables involved in the esterification process i.e. alcohol to oil molar ratio, reaction temperature, agitation speed and the initial amount of FFA of oil, were studied in the presence of sulphuric acid as catalyst at concentration of 1%-w. The experimental results show that the esterification process could lead to a practical and cost effective FFA removal unit in front of typical oil transesterification for biodiesel production. The experimental results were found to fit a first-order kinetic law. The influence of temperature on the kinetic constants was determined by fitting the results to the Arrhenius equation.
Adsorption of CO, CO2 and H2 in Silicalite-1: measurements and simulations
Authors: Wirawan Sang Kompiang , Petersson Martin , Creaser Derek
Published: October 2019

Single component and mixture adsorption of CO2, CO and H2 in Silicalite-1 was studied with the step response experiments and through molecular simulations. Experiments were performed at 323.15, 373.15 and 473.15 K, and in the pressure range 10.13 to 81.06 kPa. CO2 adsorption was favored over CO during all studied conditions. The adsorption enthalpies were -24.3 and -13.5 kJ/mol for CO2 and CO respectively. Adsorption simulations were performed using the Grand Canonical Monte Carlo method. A new zeolite framework potential was derived, and was shown to give good agreement with the experimental results. The major reason for the higher saturation loading of CO2 compared to CO is however the stronger sorbate-zeolite attraction for CO2. The affinity for CO2 also causes a decrease in the adsorbed molar fraction of CO due to the competition with CO2.
Kinetic of CO2 Decomposition by Gliding Arc Plasma
Authors: Indarto Antonius , Choi Jae-Wook , Lee Hwaung , Song Hyung Keun
Published: October 2019

Decomposition of carbon dioxide (C02) by gliding arc plasma was examined. The plasma reactor was consisted of two triangles stainless steel plates which was connected to a 20 kV AC power supply. The gas entered through a nozzle tube from the upstream cylinder reactor and exit at the downstream of the reactor. The effect of total gas flow rates have been used to study the chemical process reaction in gliding plasma system. The model of active-chemical kinetic of C02 decomposition was built to explain the way of plasma reaction. Experiment results indicate the conversion of C02 reached 18% at the total gas flow rate of 1.5' 10.5m3s'1and produced CO and 02 as the main gaseous final products.
Cr(VI) Removal from Wastewater by Using Rice Husk Ash (RHA)
Authors: Uddin M. J. , Khan M. M.R. , Iftekhar M S. , Islam M A
Published: October 2019

Rice husk ash (RHA) was studied as a potential adsorbent for Chromium (VI)removal from wastewater. RHA was able to remove effectively and economically toxic metal from synthetic wastewater. Experiments were done on the removal of Cr(VI) from dichromate solution which is a form of chromium in tannery effluent. The amount of Cr(VI) adsorption increased with the decrease in pH. The optimum parameter was = 2.0 evaluated at pH and the dose rate of the adsorbent was 5 kg RHNm3. The equilibrium data fit well in both the Langmuir and Freundlich isotherms. The study showed that 89.29 x 10-3kg Cr(VI) could be removed by 1 Kg of RHA. Since rice husk (RH) is available and cheap in Bangladesh, it can be used easily as an appropriate adsorbent to remove more than 95% Cr(VI) from tannery wastewater.
An Interesting Final-Year Undergraduate Laboratory Project: Investigation of Gypsum Scale Formation on Piping Surfaces
Authors: Muryanto S. , Ang H M
Published: October 2019

The formation of scales in pipes and on the surfaces of vessels is one of the major problems encountered by the mineral processing industry in Australia and elsewhere. A cursory study revealed that one of the main components of the scales was gypsum or calcium sulfate dihydrate. This paper discusses a typical undergraduate laboratory project to investigate the formation of calcium sulfate dihydrate scale on the surfaces of different types of pipes under isothermal conditions. This laboratory exercise is essentially a crystallization process and is suggested as one of the topics for final-year chemical engineering undergraduate project since it is a very important unit operation in the chemical, mineral, or pharmaceutical industries. Keywords: Calcium sulfate dihydrate, laboratory project, scale formation, and undergraduate curriculum..
Utilization of Mathematical Software Packages in Chemical Engineering Research
Authors: Lee Ang Wee , Ghasem Nayef Mohamed , Hussain Mohamed Azlan
Published: October 2019

Using Fortran taken as the starting point, we are now on the sixth decade of high-level programming applications. Among the programming languages available, computer algebra systems (CAS) appear to be a good choice in chemical engineering can be applied easily. Until the emergence of CAS, the assistance from a specialized group for large-scale programming is justified. Nowadays, it is more effective for the modern chemical engineer to rely on his/her own programming ability for problem solving. In the present paper, the abilities of Polymath, Maple, Matlab, Mathcad, and Mathematica in handling differential equations are illustrated for differential-algebraic equations, large system of nonlinear differential equations, and partial differential equations. The programming of solutions with these CAS are presented, contrasted, and discussed in relation to chemical engineering problems. Keywords: Computer algebra systems (CAS),computer simulation,Mathcad, Mathematica,Mathlab and numerical methods.
NO Reduction by Carbon Monoxide Over Cobalt on ZeoliteBeta
Authors: Grisdanurak Nurak , Nuntaitawegon Benjamart , Kinger Gerald , Vinek Hannelore
Published: October 2019

This study focused on the selective catalytic reduction of nitric oxide (NO) by carbon monoxide (CO) over cobalt supported on zeolite beta (CoIBEA) with and without the presence of oxygen or water. The Co/BEA catalyst with 2.6% metal loading was prepared by solid state ion exchange from freshly synthesized HBEA and CoCl2'6H20. The adsorption behavior of NO on CoIBEA investigated by temperature programmed desorption (TPD) revealed two peaks for NO at 100 and 260°C indicating that there were at least two adsorption modes. The desorption of CO completed near 200°C along with a small amount of C02. The activity of ColBEA catalyst for NO reduction by CO was lower than 20% at 100-300°C but higher than 50% at 400-500°C with the maximum conversion of 60% at 500°C. Products were selectively N2 and C02. However, the activity in the presenceof oxygen was low due to the more favorable reaction between CO and 02 to form C02. The catalytic activity in the presence of water was also low but higher than that in the presence of oxygen. Keywords: NO reduction by CO, cobalt on zeolite beta, and solid state ion exchange.
Kinetic Consideration of Clinker Formation in Portland Cement Production Using Demolition Rubbles (Concrete,mortar and plaster) Part I : Burning Ability of Raw Mixes
Authors: P Sumardi , Agra I. B. , Bendiyasa I. M. , S. Wahyudi B.
Published: October 2019

Wahyudi B.S.Wahyudi B.S.In general, the main raw materials in Portland cement production are limestone, clay, and corrective materials such as iron sand and silica sand. These raw material come from natural deposits, which are very hard to find in some countries. In this research, Portland cement was made by utilizing the demolition rubble of office and housing buildings. The rubble consists of concrete wastes (mixtures of hydrated Portland cement minerals and some aggregates) and some building bricks as well as mortar/plaster of Portland cement. To meet the cement modulus, which is generally used in Portland cement industries, corrective materials such as limestone (source of CaO) and disposed building bricks are used. The term burning ability is used for Portland cement to measure the CaO free content in the cement clinker produced from specified raw material mixes at a specific operating 'condition of clinkering. The cement modulus used is Ume Saturation Factor (LSF) and Silica Modulus (SM). The minimum Cao free content was found by using LSF: 0.86, SM: 2.14, and clinkering temperature 14000C for 30 minutes. The cement modulus was made from concrete waste, limestone, and disposed red brick with a weight ratio of 1: 3.489: 0.677. Keywords: Burning ability,demolition rubble of buildings, Portland cement, and raw mixes.
Propane Dehydrogenation in a Modified Porous Membrane Reactor for Producing Propylene with Chemical and Polymer Grades
Authors: Trianto Azis , Bindar Yazid , Noezran Noezran
Published: October 2019

Propane dehydrogenation is a promising route for producing propylene to replace traditional cracking methods. A membrane reactor offers a possibility to produce not only chemical grade but also polymer grade of propylene. The purpose of the present study is to evaluate the performance of a Modified Porous Membrane Reactor (MPMR) in producing these two propylene grades simultaneously. The study involves evaluations based on thermodynamics and process flow sheeting. The performance of this reactor is compared to that of conventional reactor. At first, the thermodynamics is conducted using minimum Gibb's Energy approach. Then the process flow sheeting evaluation is built using the HYSYS simulator. The effect of inert gas (steam) concentration in both sweep and feed sides is investigated. The thermodynamics study results optimum temperature and inert gas concentration to obtain these two grades of propylene simultaneously. The propylene with polymer grade above 99% is produced from the sweep side outlet. The propylene with chemical grade is produced from the feed side outlet. The simultaneous production of these two grades of propylene has benefit in vanishing propane-propylene splitter. Keywords: Membrane reactor, porous membrane, propane dehydrogenation, propylene production, and process simulation.
Gas Holdup and Gas-Liquid Mass Transfer Investigations in an Oscillatory Flow in a Baffled Column
Authors: Taslim Taslim , Takriff Mohd Sobri
Published: October 2019

Gas holdup and gas-liquid mass transfer were investigated in a vertical baffled column. Pure carbon dioxide (C02) was used as the dispersed phase and tap water was used as the continuous phase. Gas holdup and mass transfer rate of C02 were measured under semi-batch condition, while the liquid phase was measured in batch mode. Gas holdup was estimated as the volume fraction of the gas in the two-phase mixture in the column. Mass transfer was expressed in terms of the liquid-side volumetric mass transfer coefficient (kLa). The effects of oscillation frequency, oscillation amplitude and gas flow rate on gas holdup andmass transfer were also determined. The results showed that a significant increase in gas holdup and mass transfer could be achieved in an oscillatory baffled column compared to a bubble column. Gas holdup and mass transfer were correlated as a function of power density and superficial gas velocity. Keywords: gas holdup, mass transfer coefficient, power density, superficial gas velocity
Memahami Strategi QISCUS untuk Unggul dalam Ketidakpastian Lingkungan Bisnis yang Tinggi
Authors: Perwira Luqman Tifa , Meiyanto Sito
Published: October 2019

Technology based company operates in a very dynamic business environment. As one of the fast growing technology company, Qiscus has proven themselves to be able to survived after several major change in their business. This study aimed to find out what strategies taken by Qiscus, as a startup company and how their strategy can be used to deal with this high uncertainty business environment. A qualitative method with case study approach was used to answer these research questions. Data were gathered from 8 informants (2 founders and 6 senior employees). Through the in-depth interview and observation processes, the study found six strategic themes which were then categorized into internal and external strategies. The research findings showed that Qiscus had implemented six strategies: high involvement organization, pivot, building brand image, maintaining users experience, strategic investment and market education. The findings support previous studies that stated organizations with strong internal stakeholder involvement tend to have better performance and productivity.
Psikoedukasi “Remaja MUDA” untuk Meningkatkan Asertivitas Anti-Seks Pranikah
Authors: Alexander Yenny Sandria , Patria Bhina
Published: October 2019

This study aimed to increase the understanding of sexuality at the age of puberty through "Remaja MUDA" psychoeducation to increase anti-premarital assertiveness. The module validation was conducted in two phases. First, the content validity was conducted through judgement from ten raters. The results of Aiken’s V analysis showed score sbetween 0,8-0,975 which means that the module has good content validity. Second, the empirical tests to determine the effect of modules on anti-premarital sex assertiveness. This research was quasi-experimental research using an untreated control group design with pretest and posttest. The participants were 30 junior high school students (aged 13 to 14) in Yogyakarta. The results of independent samples t-test showed that anti-premarital sex assertiveness in the experimental group had a significant difference compared to control group (t = -10.063; p < 0.05). The results of the study indicated that the "Remaja MUDA" module can be used to increase anti-premarital sex assertiveness.
Кабельная конференция в Саранске: акцент на качество
Authors: Попов С.
Published: October 2019

Седьмая ежегодная научно-техническая конференция OOO "Сарансккабель-Оптика", входящего в ГК "Оптикэнерго", в этом году получила новое название "Эволюция оптических кабелей: акцент на качество", четко отразившее проходившую красной нитью через многие выступления главную тему. Состоявшееся в столице Республики Мордовия в Технопарке "Мордовия" событие в очередной раз увеличило (до более чем 120 человек) количество участников, что не удивительно: партнерам одного из лидеров рынка производства оптического кабеля было особенно интересно узнать о новых возможностях завода в связи с очередным расширением производственных мощностей.
CSTB’2019: UHD сегодня и завтра
Authors: Павлова Л. , Попов С.
Published: October 2019

Тема телевещания сверхвысокой четкости Ultra HD стала одной из ведущих на Международной выставке-форуме CSTB. Telecom&Media’2019. Мероприятие, отметившее в этом году свое 20-летие, традиционно открывает деловой сезон после январских каникул.
Всепогодные укомплектованные шкафы торговой марки ЦМО
Authors: Попов С.
Published: October 2019

Телекоммуникационные шкафы – неотъемлемая часть ИКТ-индустрии, формирующей информационное общество. В этой части производственная группа Ремер играет свою немаловажную роль: шкафы торговой марки ЦМО этой компании используются по всей стране в проектах "Ростелекома", "Роснефти" и Сбербанка, на бензоколонках "Газпрома", в дата-центрах Яндекса и ВКонтакте, на олимпийских объектах в Сочи.
Насколько устойчив тренд роста спроса на ОК российского производства?
Authors: Воронцов А.
Published: October 2019

Выпуск оптических кабелей в России в 2018 году по отношению к предыдущему году вырос в одноволоконном исчислении почти на четверть. Однако внутрироссийский спрос по-прежнему значительно отстает от объема выпуска созданных в стране производственных мощностей.
Проблемы создания антенн с электрическим сканированием луча для абонентских терминалов спутниковых систем связи в Ku- и Ka-диапазонах.
Authors: Анпилогов В. , Денисенко В. , Зимин И. , Кривошеев Ю. , Чекушкин Ю. , Шилов А.
Published: October 2019

Анализируются прогнозы развития рынка плоских антенн с электрическим сканированием луча, планируемых для применения в абонентских терминалах систем HTS и LEO/MEO/HEO-HTS. Сформулированы требования к таким антеннам. Приведены простые соотношения для анализа реализуемости этих требований. Рассмотрены примеры физической реализации антенн с электрическим сканированием луча, приведен анализ их структуры и характеристик. Результаты анализа показывают, что цена в 100–300 долл. для таких антенн может быть достигнута применительно к абонентским терминалам систем типа HEO-HTS; в отношении систем HTS и LEO/MEO-HTS заявленные ценовые параметры абонентских терминалов в обозримой перспективе недостижимы.
Инновации в области оповещения
Authors: Чурсин И.
Published: October 2019

Актуальность, масштабность и специфичность реализуемых ФГУП РСВО проектов в области оповещения и информирования о чрезвычайных ситуациях требуют планомерных и скоординированных действий всех заинтересованных органов и ведомств. Как показывает практика, именно такой подход позволяет эффективно внедрять инновационные технологии и технические решения в данной сфере.
Линейный усилитель Positron BRX как экономичный способ повышения пропускной способности “Последней мили”
Authors: Вайсер Р.
Published: October 2019

Применение линейных усилителей Positron BRX позволяет без дорогостоящей прокладки волоконно-оптической линии вдвое увеличить дальность ШПД по медножильному кабелю.
Автоматическое управление сетями 4G/5G с использованием технологий и алгоритмов SON
Authors: Тихвинский В. , Байкенов А. , Солошенко А.
Published: October 2019

Рассмотрена стандартизованная Партнерским проектом 3GPP автоматизация процессов управления сетями мобильной связи на основе технологии самоорганизующихся сетей SON, реализуемая в современных сетях эксплуатации, администрирования и управления сетью OAM. Показаны особенности решаемых задач на этапах самооптимизации, самоконфигурации и самовосстановления сети на всех этапах жизненного цикла сетей мобильной связи 4G и 5G, критерии и подходы к оценке эффективности решения задач сетью SON.
“ТИБО-2019”: Минск как центр цифровизации.
Authors: Попов С.
Published: October 2019

XXVI Международный телекоммуникационный и ИТ-форум "ТИБО-2019", организованный в Минске под патронажем Министерства связи и информатизации и при участии широкого круга государственных органов Республики Беларусь, стал не только площадкой для демонстрации достижений в области связи и ИТ, но и местом проведения ряда международных "цифровых" событий, в том числе 2-го Евразийского цифрового форума EADF’2019.
Особенности монтажа подвесных ОК при низких отрицательных температурах.
Authors: Алехин И. , Попов Б. , Попов В.
Published: October 2019

С понижением температуры наблюдается уменьшение радиуса изгиба оптического кабеля на выходе из порта кабельной арматуры (ПКА) смонтированной муфты. Приводятся результаты исследования радиусов изгиба на выходе из ПКА для различных конструкций кабелей в зависимости от температуры окружающей среды и зависимости радиусов изгиба на выходе из ПКА от жесткости кабеля.
Разработка образа операционной системы FREEBSD для установки виртуального маршрутизатора и программного средства переключения путей маршрутизации.
Authors: Ряполова Е. , Студянникова М. , Преснов А. , Цветкова К.
Published: October 2019

Насущная проблема отделов ИТ многих современных предприятий – нехватка ресурсов сервера для обработки необходимой информации. В статье предлагается виртуализировать сервер с целью увеличения его функциональных возможностей. Научная новизна состоит в анализе существующих решений виртуализации, выбора виртуальной платформы и разработки программного обеспечения для эффективного перехода на нее всей системы предприятия без потерь времени и данных. Практическая новизна состоит в разработке программного средства автоматического переключения путей маршрутизации, написанной на языке Perl.
Пассивные оптические WAN-Сети
Authors: Карандин О. , Портной С.
Published: October 2019

Пассивная архитектура оптических WAN-сетей позволяет повышать пропускную спо-
собность транспортных сетей без увеличения затрат на инфраструктуру. В статье рас-
сматриваются преимущества и недостатки этой архитектуры, изучается изменение подходов к проектированию сетей по сравнению с активной архитектурой.
XVIII конференция НРА: как обеспечить частотами 5G.
Authors: Сергеев П.
Published: October 2019

Восемнадцатая конференция Национальной радиоассоциации под традиционным названием "Актуальные вопросы повышения эффективности использования национального радиочастотного ресурса" была организована в конце мая 2019 года на теплоходе "Дмитрий Фурманов". Ключевой темой дискуссий стал вопрос частотного ресурса для российских сетей связи пятого поколения, на котором сконцентрирован данный репортаж.
Современные телекоммуникации для телемедицины.
Authors: Леоненко В.
Published: October 2019

Использование современных средств коммуникаций, особенно сетей беспроводной связи 5G, для дистанционного предоставления врачебных и консультационных услуг становится уже реальным инструментом для эффективного лечения, который помогает, без преувеличения, спасать жизни. Новые телекоммуникационные технологии позволяют быстро и относительно недорого развернуть соответствующую медицинскую инфраструктуру не только в отдаленных районах, но и оказывать срочную медицинскую помощь в движущихся объектах.
НИИ РАДИО – 70 ЛЕТ
Authors: Гатилов А.
Published: October 2019

ФГУП "Научно-исследовательский институт радио" удалось сохранить славные традиции прошлого и подготовить новое поколение исследователей, готовых к решению сложнейших технологических задач по строительству инфраструктуры цифровой экономики.
СЕТИ 5G ВЕДУТ К СОЗДАНИЮ НОВЫХ ЭКОСИСТЕМ
Authors: Опсеница Д.
Published: October 2019

Технологии 5G позволяют обеспечить высокое качество сервисов OTT, поэтому по мере внедрения сетей пятого поколения будет развиваться сотрудничество операторов связи с ОТТ-провайдерами.
Методология оценки технологичности изделий машиностроения
Authors: Вартанов М. , Чушенков И.
Published: October 2019

Рассмотрены широко применяемые программные продукты для оценки производственной технологичности технически сложных изделий. Предложена программа для оценки трудоемкости изготовления крупногабаритных изделий на этапе конструкторско-технологической подготовки производства.
ME TALWORKING AND EMO HANNOVER 2019 –
THE T WO PILL ARS OF THE WORLD MACHINET
O OL INDUS T RY
AN INTERVIEW WITH DR. WILFRIED SCHÄFER , E X EC U TI V E DIRECTOR
OF GERMAN MACHINE TOOL BUILDERS’ ASSOCI AT ION VDW (VEREIN
DEU TS CHER WERK Z EUGMA SCHINENFABR IK EN)
Authors: Alyoshin A.N. , Lavrentjeva O.A.
Published: October 2019

According to the prognosis of
Oxford Economics, a British
Institute of Economic Researches,
the world economy in the beginning
of the year will rise by 2.5%. The
growth of investments in the
manufacture will be 2,4%. According
to the spring prognosis the growth
of consumption of machine tools
will become 2,3%. This is the
background for the exhibition in
Russia “Metalloobrabotka – 2019”
and “EMO Hannover 2019” in
Germany. Will these two pillars of
the world machine tool industry
become the drivers of the growth
and warm up the world economy?
ПОДГОТОВКА СИСТЕМЫ К ЗАМЕНЕ СМАЗОЧНО-ОХЛАЖДАЮЩЕЙ ЖИДКОСТИ
Authors: Клепиков А.М.
Published: October 2019

Описан процесс подготовки системы подачи СОЖ к замене жидкости, включающий очистку и дезинфекцию емкостей, трубопроводов и узлов системы.
La jurisprudencia del tribunal europeo de derechos humanos en la jurisprudencia del tribunal constitucional español.
Authors: Sanz Pérez Ángel L
Published: October 2019

A diferencia de lo que sucede en otros Estados europeos, en España, la “internacionalización” de los derechos es impuesta por el artículo 10.2 de la Constitución. Ello significa que el Tribunal Constitucional español debe tener en cuenta los documentos internacionales de derechos cuando interprete los derechos. Son tres los casos que se aluden en este trabajo: STC 64/2019, de 9 de mayo, en la que el Tribunal Constitucional, se basa en la doctrina del Tribunal Europeo de Derechos Humanos parar reconocer el derecho de las partes a conocer toda la documentación en un proceso. 

 
Barreras condicionantes en el derecho humano a la salud
Authors: Reca Joaquín Pablo
Published: October 2019

Visualizando como fenómeno general que las personas con discapacidad se
hallan en una situación de mayor vulnerabilidad, en razón de los impedimentos que
cotidianamente se les presenta para lograr la mejor calidad de vida posible, es que se
intentará demostrar cómo de las distintas barreras existentes para este colectivo de
personas en torno al derecho humano a la salud, aquéllas encuentran en la vía del
amparo un remedio idóneo para superarlas. En tal sentido, se habrá de tomar como
referencia delimitada el ámbito territorial de la Provincia de Buenos Aires (Argentina) y
dentro del mismo, los afiliados al sistema de salud del “Instituto de Obra Médico
Asistencial”.
Developing sustainable tax strategies in the post-BEPS era.
Authors: Sanín Gómez Juan Esteban
Published: October 2019

As never before, the concepts of tax planning, corporate governance and sustainability are having a close relation. Despite the fact that governments have tackled tax avoidance schemes, the director´s duty of care still obliges them to seek the best tax optimization for the Company they manage. In that sense, developing sustainable tax strategies that comply with transparent post-BEPS policies should could be considered as a standard of good corporate tax governance in today’s entrepreneurial world.

 
Estado y Revolución en Cuba: encrucijadas de las actuales reformas
Authors: Pérez Varona Wilder
Published: October 2019

Este trabajo parte de dos presupuestos fundamentales. Uno es que el actual proceso de reformas en Cuba, denominado «Actualización del modelo socioeconómico», debe ser comprendido dentro de un proceso de reajuste que inició en los años noventa del pasado siglo. El otro, que dicho reajuste compete a una reforma del proyecto de sociedad en general, y en particular a un redimensionamiento del Estado, de sus funciones y vínculos con la sociedad civil cubana. Por su relevancia para el contexto nacional, se enfatiza en la relación entre el Estado y la sociedad, tal como se ha reconfigurado a lo largo de estas décadas. Para ello se distinguen tres momentos. Primero se bosqueja históricamente algunos elementos del modelo conformado, que constituye las condiciones de partida del proceso actual de cambios en Cuba. A continuación, se ofrece un panorama de la propuesta y de algunos efectos del reajuste cubano, en su sentido amplio y en el más reciente de la actualización. Finalmente, se brinda una valoración de los desafíos que se desprenden para Cuba, de cara a un socialismo viable.
Los límites del cambio político en Nuestramérica
Authors: Gambina Julio
Published: October 2019

El artículo considera el proceso de cambio político en la región latinoamericana y caribeña, en la primera década del Siglo XXI, y la contraofensiva reaccionaria en el presente, con golpes no tradicionales, en varios países y procesos electorales que supone nuevos procesos políticos hegemonizados por las derechas. Se trata de un proceso político, en el marco de la continuidad por una década de la crisis mundial del 2008/2009, según destacan los organismos internacionales. Las clases dominantes buscan en esas condiciones crear escenarios favorables para una mayor explotación de la fuerza de trabajo y el saqueo de los recursos naturales. El contexto más general se desenvuelve en las contradicciones sistémicas que se derivan de la política exterior estadounidense bajo la presidencia Trump. Bajo esas condiciones, se pretende reflexionar sobre los límites de los gobiernos del cambio político, para analizar las posibilidades de la lucha anticapitalista y el proceso de la transición del capitalismo al socialismo. El proceso de reflexión transita por circunstancias desarrolladas a través de la historia, con intención de recuperar la actualidad del debate sobre la transición. El horizonte socialista reapareció recientemente en la región, y por ende vale discutir el alcance de la propuesta y los límites de los procesos en curso bajo la orientación de un futuro socialista.
Reflexiones acerca del desenlace del ciclo progresista en Argentina
Authors: Roffinelli Gabriela
Published: October 2019

En el presente trabajo nos preguntamos ¿qué sucedió para que la etapa histórica iniciada, a comienzos del Siglo XXI, por luchas populares de las que emergieron los gobiernos progresistas confluya 15 años después con un retorno de gobiernos abiertamente conservadores con programas políticos y económicos ajustados a los requerimientos del mercado mundial?

Obviamente no se puede desarrollar una respuesta unicausal a este interrogante, por el contrario, nuestro análisis se centra en un entramado de dimensiones que permiten dar cuenta de las condiciones que hicieron posible la recuperación de la iniciativa política por parte de las fuerzas conservadoras en Argentina. Como por ejemplo, a) los límites estructurales que presentó el modelo neodesarrollista cuando se presentaron las restricciones del comercio exterior, la baja de los precios de los commodities, etc.; b) las aspiraciones de integración económica regional que fueron rebasadas por actividades nacionales de exportación; c) los acuerdos y alianzas con sectores de las clases dominantes, con grupos concentrados de la economía, con las corporaciones de medios de comunicación, con estructuras políticas anquilosadas, con personajes de la derecha más rancia, sectores que se convirtieron en factores de condicionamiento y desestabilización, d) la desmovilización popular frente a los embates de la derecha; e) la integración social formulada a través y exclusivamente del consumismo, entre otros.
Gambaran Pelaporan Kejadian Nyaris Cedera (KNC) dan Kejadian Tidak Diharapkan (KTD) Berdasarkan Faktor Manusia dan Organisasi/Manajemendi Instalasi Gizi Rumah Sakit
Authors: Rachmawati Emma , Azizah Siti Dharma
Published: October 2019

Keamanan makanan (food safety) adalah aspek penting keselamatan pasien dalam pelayanan gizi kepadapasien di ruang perawatan. Kejadian Nyaris Cedera (KNC) dan Kejadian Tidak Diharapkan (KTD) padapelayanan gizi dapat berakibat kematian kepada pasien.Penelitian ini bertujuan memberikan gambaranpelaporan KNC dan KTD di suatu unit Instalasi Gizi di Rumah Sakit Ibu Anak, Jakarta.Disain penelitianadalah epidemiologi deskriptif.Pengumpulan data melalui kuesioner yang diberikan kepada seluruhkaryawan suatu Instalasi Gizi Rumah Sakit Ibu Anaksejumlah 35 orang pada tahun 2014. Analisis datadilakukan secara deskriptif. Penelitian menunjukkan bahwa terdapat 46 % pegawai Instalasi Gizi RS Xyangmelaporkan pernah melakukan KNC/KTD.Untuk faktor manusia, kejadian KNC dan KTD dilaporkan olehsebagaian besar pegawai dengan kompetensi tinggi (81,2%), pendidikan terakhir D3/S1 (56,2 %), bebankerja berat (56,2 %), sikap kurang baik (56,2 %), dan motivasi tinggi (68,7%). Sementara tidak ada perbedaanproporsi kelompok pegawai dengan masa kerja kurang atau lebih dari 5 tahun dalam melaporkan kejadianKNC dan KTD. Untuk faktor organisasi/manajemen, kelompok pegawai yang melaporkan terjadinyaKNC dan KTD merupakan kelompok pegawai yang menilai kepemimpinan yang kurang baik (56,2%),kondisi kebijakan/prosedur yang ada sudah sesuai (75,0%), kerjasama tim yang kurang baik (56,2%), dankomunikasi yang baik (68,7%). Sementara tidak ada perbedaan proporsi pelaporan kejadian KNC/KTDdari sisi variabel peralatan dan lingkungan fsik. Kejadian KNC/KTD dilaporkan oleh pegawai dengankompetensi tinggi, pendidikan terakhir D3/S1, dengan beban kerja berat, sikap kurang baik, motivasitinggi, kepemimpinan kurang baik, dan komunikasi yang baik.
Perbandingan Perilaku Jajan, Konsumsi Makanan Cepat Saji serta Tidur Siang berdasarkan Status Obesitas pada Remaja
Authors: Mardhiati Retno , Setiawan Arif
Published: October 2019

Dampak jangka pendek akan menurunkan produktiftas dan menurunkan rasa percaya diri remaja,sedangkan dampak jangka panjang akan menimbulkan penyakit degeneratif. Tujuan penelitian ini adalahmembandingkan perilaku remaja obesitas dan bukan obesitas berdasarkan kebiasaan konsumsi makanancept saji dan perilaku jajan, menonton televisi serta kebiasaan tidur siang.Desain penelitian ini adalah CrossSectional dengan jumlah sampel 120 siswa/i pada salah satu SMA di Jakarta tahun 2017. Teknik samplingmenggunakan sampling jenuh. Jenis data primer yang dikumpulkan dengan wawancara dan pengukuranberat badan dan tinggi badan. Instrumen yang digunakan adalah kuesioner. Analisis data dilakukan dengananalisis perbandingan proporsi. Terdapat perbedaan proporsi dimana remaja obesitas lebih banyak yangmemiliki kebiasaan konsumsi makanan cepat saji, jajan di sekolah dan menonton televisi lebih dari 4 jamper hari daripada remaja non-obesitas. Diperlukan upaya edukasi dalam bentuk penyuluhan dan konselingpada remaja obesitas sangat membantu memotivasi remaja obesitas untuk merubah perilaku makan danaktiftasnya.
Efektiftas Stand Up Comedy Sebagai Media Peningkatan Pengetahuan Perilaku Seksual Berisiko pada Remaja di RPTRA (Ruang Publik Terpadu Ramah Anak)
Authors: Asiah Nur , Rostina Julie , Harmani Nanny  
Published: October 2019

Pengetahuan remaja tentang kesehatan reproduksi belum memadai. SDKI 2012 menyebutkan bahwahanya 35,3% remaja perempuan dan 31,2% remaja laki-laki usia 15 – 19 tahun yang mengetahui bahwaperempuan dapat hamil dengan satu kali berhubungan seksual. Stand Up Comedy merupakan bentuk senikomedi atau melawak yang disampaikan secara sederhana. Selain sebagai hiburan, Stand Up Comedy dapatdigunakan sebagai media informasi yang sangat komunikatif di masyarakat, dan dapat dipakai sebagaisarana untuk meningkatkan pengetahuan pada penontonnya. Penelitian ini bertujuan untuk mengetahuiefektiftas metode Stand up Commedy sebagai media peningkatan pengetahuan tentang perilaku seksualberisiko pada remaja di RPTRA (Ruang Publik Terpadu Ramah Anak). Desain Penelitian adalah quasieksperimental. Populasi dan sampel adalah remaja di RPTRA. Kelompok kontrol penelitian ini adalahremaja SMA usia 15 – 19 tahun yang beraktivitas di RPTRA Manunggal. Sedangkan kelompok kasusadalah remaja SMA usia 15 – 19 tahun yang beraktivitas di RPTRA Mawar. Keduanya berlokasi diJakarta Selatan. Analisis bivariat menggunakan Uji Paired sample t-test pada masing-masing kelompok.Selain itu, juga dilakukan uji t independen untuk melihat efektiftas metode ceramah dibandingkan denganmetoda Stand Up Comedy. Pretest pengetahuan antar kelompok tidak menunjukkan adanya perbedaanyang signifkan, nilai rata-rata kasus 55.4000 dan rata-rata kontrol 55.4467, artinya tingkat pengetahuansebelum perlakuan adalah setara pada masing-masing kelompok. Sedangkan uji statistik pada hasil posttestantar kelompok menunjukkan ada perbedaan yang bermakna antara pengetahuan kelompok kontrol dengankelompok kasus yang mendapatkan penyuluhan dengan metode Stand Up Comedy. Upaya peningkatanpengetahuan dengan metode Stand Up Comedy lebih efektif dibandingkan dengan metode ceramah.
Perilaku Merokok Remaja Laki-laki Siswa SMP Swasta di Depok
Authors: Astuti Nurul Huriah
Published: October 2019

Di Indonesia diperkirakan pada tahun 2013 di ada sekitar 60,4 juta orang yang merokok setiap hari. Meskipun faktor-faktor risiko perilaku merokok di kalangan remaja di Indonesia sudah banyak diteliti dalam berbagai survei, namun pengetahuan secara mendalam mengenai peranan niat, norma subyektif, dan lingkungan sosial masih belum banyak diteliti.

Penelitian ini bertujuan untuk mengetahui informasi yang mendalam tentang gambaran faktor-faktor yang mendukung dan menghambat  terjadinya perilaku merokok di kalangan remaja laki-laki di SMP Master di Kota Depok. Penelitian ini merupakan penelitian kualitatif dengan rancangan Rapid Assesment Procedure (RAP). Informan yang terlibat dalam penelitian ini ada 10 orang dan 1 orang informan kunci yang diwawancarai dengan enggunakan teknik Wawancara Mendalam (WM).

Hasil penelitian ini menunjukkan Faktor norma subyektif adalah faktor yang paling berpengaruh dalam membentuk perilaku remaja untuk merokok. Sedangkan iklan rokok adalah faktor yang paling sedikit mempengaruhi remaja untuk merokok. Norma subyektif yang terbentuk dari teman sebaya mereka adalah   merokok merupakan identitas remaja ketika nongkrong atau bercengkrama dengan teman bermainnya. Nongkrong tanpa rokok adalah hal yang tabu buat remaja, sehingga dorongan merokok berasal dari teman sebaya, bukan dari dorongan internal, diri sendiri. Edukasi yang membangun keterampilan hidup (life skill) remaja belum didapatkan oleh informan
3D DRUG PRINTING- A SWING FROM LABORATORY PRODUCTION TO COMPUTERIZED PRODUCTION
Authors: Itoo Asif Mohd , Raza Syed Naiem , Khan Ahmar , Sarjohn Bashir , Ubaid Tariq , Khan Nisar Ahmad
Published: October 2019

Three-Dimensional (3D) printing is a process where objects are made in successive layers under computer control by fusing or depositing materials. The objects can be of nearly any shape or geometry and come in a computer-aided (CAD) design from 3D model. Since 3D printing began in 1984, it has changed enormously and has been used in a wide range of fields, including medicine and architecture. 3D printing moves rapidly and in future will transform and change the way we live and work from laboratory-based organs to pharmaceutical supplies.

3D printing in pharmaceuticals has been used to produce many novel dosage forms like microcapsules, complex drug-release profiles, nanosuspensions, and multilayered drug delivery devices. It also offers important advantages from the industrial point of view such as cost-efficiency, higher productivity, democracy-making and enhanced cooperation.

Keeping in view the recent approval given by USFDA to many drug the focus has now shifted to the personalized medicine as it offers an important benefit to patients who need medications that have narrow therapeutic index or a higher predilection to be influenced by genetic polymorphisms. 3D printer is now seen as a valuable, efficient and economical tool to manufacture individualized medications, tailored to specific patients based on their needs and thereby change the future of pharmacy practice in general and pharmaceutical care in particular.
FORMULATION AND EVALUATION OF TAFLUPROST OPHTHALMIC SOLUTION
Authors: Tarun kumar Pappula Venkata , Anil Kumar A. , Srinivas Rao N.
Published: October 2019

The aim of the present study was to formulate, develop and evaluate ophthalmic solution containing Tafluprost. The selected prostaglandin analogue belongs to BCS - II. So to increase the solubility of the Tafluprost in WFI Beta Cyclodextrin was used by performing various trials variables of the experiments procedure Stirring time and speed were optimized to enhance the solubility. From the experimental procedure with different trails 20mg/mL of Cyclodextrins was fixed for the optimized formula. The product were characterized for appearance, physical state, colour and odour of the drug characteristics. The prepared formulations were evaluated for pH, osmolality and assay and found to be in acceptable ranges. Stability study was carried out for optimized formulation at 40°C±2°C /NMT 25%RH and 30°C ±2°C/ 65%±5% RH for 3 months, were evaluated for pH ,osmolality ,assay found to be within  acceptable limits. Finally it can be concluded that the in house product Tafluprost ophthalmic solution was met with in the specification.