bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determining experimental applicability limits of Spalart-Almares turbulent model and Reynolds stresses transfer model at mass transfer intensification in rotary-divergent controlled flows
Authors: Kabardin I K , Yavorsky N I , Meledin V G , Kh Pravdina M , Gordienko M R , Ezendeeva D P , Kakaulin S V , Usov E V , Klimonov I A , Krotov S V , Bakakin G V , Kabardin A K , Yu Sadbakov O 
Published: November 2019

Abstract
This problem can arise in mechanics, chemistry and catalysis in the mass transfer intensification. The mass transfer characteristics were experimentally analyzed in a controlled rotary-divergent flow. The laser Doppler anemometer was used for turbulent mass transfer diagnostics. The experimental investigation was used to verify the numerical calculations. The numerical simulation has shown the presence of a near-wall jet after a rotary device and the reverse flow zones formation. The model of Reynolds stress transfer adequately describes the flow in range of flow rates from 50 to 250 n.m3/h. The Spallart-Almares turbulence model fails to adequately describe the flow at all flow rates.
Experimental study of temperature dependence of drilling fluids viscosity with nanoparticles
Authors: Mikhienkova E I , Minakov A V , Matveev A V , Pryazhnikov M I 
Published: November 2019

Abstract
This research is focused on the dependence of viscosity of water-based drilling fluid modified by nanoparticles on temperature. Silicon oxide of 10 nm size was used as nanoparticles. The nanosuspensions were prepared for nanoparticle concentrations from 0.25 to 3 wt%. An aqueous solution of bentonite with a mass fraction of 5 % was used as a base drilling fluid. Rheological studies were conducted at varying temperatures (25, 40, 55 and 80 °C). The dependences of the effective viscosity of these suspensions on the concentration of nanoparticles and temperature have been obtained.
An experimental study of hydrodynamics and heat transfer at fluid filtration through a porous medium
Authors: Dekhtyar R A , Ovchinnikov V V 
Published: November 2019

Abstract
An experimental study of hydrodynamics and heat transfer under conditions of filtering of water and aqueous solution of glycerol through a porous insert in the channel was carried out. The values of the coefficient of hydraulic resistance and heat transfer for a chaotic backfill of balls with a diameter of 3.2 mm for filtering water and 47% glycerol solution have been determined. Three flow regimes were investigated: inertial, transient and turbulent. It has been found that, depending on the filtering mode through the porous insert, there are various laws of heat transfer. Comparison of the obtained results on heat transfer in ball fillings with the available literature data has been carried out. The obtained experimental data are in good agreement with the data of numerical calculations. For the thermal stabilization section at high values of the Reynolds number they are in good agreement with the data obtained by filtering air through a porous medium.
Cooling of the inner-chamber elements of a thermonuclear reactor with a dispersed flow
Authors: Mirnov S V , Komov A T , Varava A N , Dedov A V , Lyublinski I E , Vertkov A V , Zakharenkov A V , Loktionov V D , Smorchkova Y V 
Published: November 2019

Abstract
A method of temperature stabilization of the limiter of the Tokamak T-10 with capillary-porous structure on the side facing the plasma and saturated with liquid lithium, by dispersed gas-liquid flow is considered. The spray pattern, formed by the spray generator, is directed along the axis of the divertor. The results of experiments for determining the geometric characteristics of a torch, a dispersed flow, the distribution of the velocity and the size of water droplets in dependence on the pressure of water and air entering the generator nozzle are presented. The technique developed by the authors for processing experimental data is presented, which makes it possible to calculate the density of the heat flux, the temperature on the outer (heated) and internal (cooled) surface of the target walls. The design of the working area -divertor simulator is developed. It was experimentally established that the temperature of the target sharply decreased when air was supplied to the generator nozzle. The main experiments were carried out at excess water pressures (1.0 ÷ 3.5)·105 Pa, air (1.0 ÷ 4.0)·105 Pa, and heat flux densities of up to 8 MW/m2 applied to the target.
Development of a method of detection and classification of waste objects on a conveyor for a robotic sorting system
Authors: Seredkin A V , Tokarev M P , Plohih I A , Gobyzov O A , Markovich D M 
Published: November 2019

Abstract
Currently used recycling technologies have limitations on the composition of recyclable waste, which makes them specialized. Thus, the preliminary sorting of municipal solid waste is a necessary step, increasing the efficiency of using municipal solid waste as a resource. To sort municipal solid waste we developed a method for detecting and classifying waste on a conveyor line using neural network image processing. Images from a camera are fed to a neural network input, which determines the position and type of detected objects. To train the neural network a database of more than 13,000 municipal solid waste images was created. Mean-Average Precision for the neural network model was 64%.
The study of relief parameters of fluorocarbon coatings antiadhesive to microorganisms formed on polymer materials
Authors: Elinson V M , Kravchuk E D , Schur P A 
Published: November 2019

Abstract
The problems of the formation of fluorocarbon coatings in a plasma-forming mixture CF4 + C6H12 on the surface of polyethyleneterephthalate and polytetrafluoroethylene by ion-plasma technology are considered with the aim of increasing mushroom resistance, in particular, the relief parameters of the formed coatings (root-mean-square deviation of the roughness, average high heterogeneity peaks, average distance between peaks) and their influence on mushroom resistance
Dependence of the erosion of graphite on flux density for high-temperature irradiation by hydrogen ions
Authors: Puntakov N A , Begrambekov L B , Grunin A V , Dolganov G D 
Published: November 2019

Abstract
In this paper, a dependence of the erosion of graphite under a high energy ion flux at temperature of 2050°C on the ion dose is investigated. It is shown that, at ion flux densitiy of 1.42×1022 ion/m2s, irradiation stimulates diffusion processes that lead to the removal of carbon atoms from the bulk of the sample, leading to the formation of a porous layer, whereas, for ion flux density of 1.4×1020 ion/m2s, no such layer is formed.
Liquid-phase bonding of TiNi-based alloys
Authors: Senkevich K S 
Published: November 2019

Abstract
The paper considers the possibility of producing liquid-phase bonding of TiNi-based alloys containing a high volume fraction of Ti2Ni intermetallic particles and high nickel content in the alloy matrix. Using the methods of differential thermal analysis and scanning electron microscopy, the possibility of the eutectic reaction in the alloys upon heating has been determined as well as the precipitation of nickel-enriched particles in the bonding zone.
The role of quantitative cross-case analysis in understanding tropical smallholder farmers’ adaptive capacity to climate shocks
Authors: Beauchamp Emilie , Moskeland Annalyse , Milner-Gulland E J , Hirons Mark , Ruli Ben , Byg Anja , Dougill Andrew J , Jew Eleanor , Keane Aidan , Malhi Yadvinder , McNicol Iain , Morel Alexandra C , Whitfield Stephen , Morris Rebecca J 
Published: November 2019

Abstract
Climate shocks are predicted to increase in magnitude and frequency as the climate changes, notably impacting poor and vulnerable communities across the Tropics. The urgency to better understand and improve communities’ resilience is reflected in international agreements such as the Paris Agreement and the multiplication of adaptation research and action programs. In turn, the need for collecting and communicating evidence on the climate resilience of communities has increasingly drawn questions concerning how to assess resilience. While empirical case studies are often used to delve into the context-specific nature of resilience, synthesizing results is essential to produce generalizable findings at the scale at which policies are designed. Yet datasets, methods and modalities that enable cross-case analyses that draw from individual local studies are still rare in climate resilience literature. We use empirical case studies on the impacts of El Niño on smallholder households from five countries to test the application of quantitative data aggregation for policy recommendation. We standardized data into an aggregated dataset to explore how key demographic factors affected the impact of climate shocks, modeled as crop loss. We find that while cross-study results partially align with the findings from the individual projects and with theory, several challenges associated with quantitative aggregation remain when examining complex, contextual and multi-dimensional concepts such as resilience. We conclude that future exercises synthesizing cross-site empirical evidence in climate resilience could accelerate research to policy impact by using mixed methods, focusing on specific landscapes or regional scales, and facilitating research through the use of shared frameworks and learning exercises.
Microplastics increase the marine production of particulate forms of organic matter
Authors: Galgani Luisa , Tsapakis Manolis , Pitta Paraskevi , Tsiola Anastasia , Tzempelikou Eleni , Kalantzi Ioanna , Esposito Chiara , Loiselle Arturo , Tsotskou Anastasia , Zivanovic Snezana , Dafnomili Eleni , Diliberto Santi , Mylona Kyriaki , Magiopoulos Iordanis , Zeri Christina , Pitta Elli , Loiselle Steven A 
Published: November 2019

Abstract
Microplastics are a major environmental challenge, being ubiquitous and persistent as to represent a new component in all marine environments. As any biogenic particle, microplastics provide surfaces for microbial growth and biofilm production, which largely consists of carbohydrates and proteins. Biofilms influence microbial activity and modify particle buoyancy, and therefore control the fate of microplastics at sea. In a simulated ‘plastic ocean’, three mesocosms containing oligotrophic seawater were amended with polystyrene microbeads and compared to three control mesocosms. The evolution of organic matter, microbial communities and nutrient concentrations was monitored over 12 days. The results indicated that microplastics increased the production of organic carbon and its aggregation into gel particulates. The observed increase of gel-like organics has implications on the marine biological pump as well as the transport of microplastics in the ocean.
Thermal Management of Battery Pack for Hybrid Vehicles Using PCM
Authors: Pant N , Racherla V 
Published: November 2019

Abstract
Advancement in thermal management system which can be adopted to absorb heat generated in Li-ion battery pack for hybrid vehicle during charge and discharge cycles, by keeping the battery pack in optimum range of 15°C-25°C. Factors such as parasitic power, additional weight of cooling unit, temperature rise and cell temperature dierence play a vital role. PCM (Phase Change Material) are compounds having high thermal conductivity and latent heat storage. They go through phase change when they absorb or release heat. The basic design is to manufacture a cooling jacket using phase change material which absorbs heat during the day and rejects it at night. The result show decreases in temperature by 1.5°C, additional increase in weight of battery pack by 17.5%, no parasitic power consumption, increase in safety and compactness to applications.
Tribological characteristics of Calophyllum ester based bio-lubricant – commercial engine oil blends
Authors: Rama Rao Chebattina Kodanda , Srinivas V. , Pranay G.V.S. , Vishwanath Krishna P. , Jagadhi S.P. 
Published: November 2019

Abstract
The main purpose of this research is to investigate the Tribological characteristics of Calophyllum Ester based Bio lubricant – commercial engine oil blends. The Bio lubricants used in this study are esters derived from Calophyllum seeds. The fatty acid content reveals the presence of saturates which form feed stock to esters. The physicochemical properties evaluated as per ASTM standards are found to be in an acceptable range. TMP (Trimethylolpropane) ester is blended with HP-RACER4 (Engine oil) in 5%, 10%, 15%, and 20% volume percentages respectively and tested for Anti-wear and Anti-Frictional properties using a four-ball tribo-tester. It was found that, although both the esters offer a very low coefficient of friction, the main drawback is their failure at higher loads. The blending of commercial lubricant with bio-lubricant resulted in lower friction and wear characteristics of the commercial lubricant. The optimum percentage of bio-lubricant in the commercial lubricant is found to be 20% which gave the desired results.
Novel Use of Waste Chicken Feather Fiber for making Prototype Non-woven Mats and their Evaluation
Authors: Choudary R.B. , Burri Madhuri , Srinath R. , Alex Rosamma 
Published: November 2019

AbstractChicken feather is a waste product that remains after processing the chicken to obtain meat. A series of non-woven mats were made by adding several levels of chicken feather fiber (CFF) to determine the effect of CFF on mat properties. The fractions of CFF used ranged between 10 and 60% and pre-vulcanized latex was used as a binder. The mats were tested for tensile strength, resistance to tear and aging behavior. It was found that the tensile and tear strengths were similar to the latex adhesive strength. Water absorbency and thermal conductivity were also determined. These mats can be used as soil erosion mats, nursery bags, shoe insoles, thermal and acoustic insulators, etc.
Electrochemical Discharge Machining Technology Applied for Turning Operation
Authors: Ali M N , Doloi B , Sarkar B R 
Published: November 2019

Abstract
In hybrid electrochemical discharge machining (ECDM) process machining of electrically conducting and non-conducting materials takes place in an alkaline electrolyte with the introduction of a tool electrode and an auxiliary electrode. In this paper an alternative of ECDM process, Electrochemical Discharge Turning (ECDT), is proposed to machine a cylindrical job which rotates continuously against a stationary or moving tool electrode. The material removal mechanism of ECDT process is similar to ECDM process, but ECDT employs ECDM components with rotary cylindrical workpiece immersed in an electrolytic solution. The present paper highlights the design and development of ECDT set-up which can be applied for turning operation. The proposed ECDT set up can also be utilized for making grooves of different shapes and sizes on cylindrical parts of electrically non-conducting materials.
Free vibration analysis of adhesive bonded composite T-joints using finite element method
Authors: Panda S K , Mishra P K 
Published: November 2019

Abstract
This study presents the responses of natural frequency on adhesive bonded T-joint structure. For this purpose, free vibration analysis in the T-joint structure have been performed with a three-dimensional finite element method using ANSYS parametric design language (APDL) code. Using Solid 185 element type the structure has been modelled. To verify the accuracy and stability of the present formulation, intensive comparisons are made with existing results available in the literature and good agreements are obtained. Additionally, Influence of various geometrical and material parameters on the dynamic responses of joint structure has been investigated and discussed in detail. It is observed that the natural frequency increases with increase in aspect ratio of the joint structure. Also, the joint made up of Glass fiber/epoxy indicates more resistance towards free vibration.
The Application of Integrated Executive Information System
Authors: Soegoto H S 
Published: November 2019

Abstract
The objective of this research is to analyse necessities that faced to build integrated information system for a higher education institution, obstacles that encounter when building a system by utilising consultant service from external and internal, and benefits that perceived by a higher institution after owning the integrated information system according to the needs of the higher institution. The method used in this research was quantitative analysis towards information system application which is owned and the development that undertake related to the integration of university information system. The analysis result shows that integrated executives information system would make easier to search for a data and taking decisions based on authorisation level and their respective interest. Build information system by utilising consultant service or by an internal team highly depends on the level of necessities from each higher institution regarding the information access that needed, internal team capacities and the budget owned. Building information system internally needs longer time but it possesses the ease if requiring an addition or changing the content in the future.
Web-Based Ordering Information System on Food Store
Authors: Herikson R , Kurniati P S 
Published: November 2019

Abstract
The purpose of this research is to develop a system that can help food shop owners and customers to make transactions on the website without having to come to the store. The method used in this research was a descriptive method which presents a complete illustration of the current situation, collecting primary and secondary data with interviews and observations about ordering systems in food stores, for the method of approaching the system using object-oriented and developing the system using a prototype. The results of this research are to increase the effectiveness and make it easier for customers to order food and the admin can provide maximum service to customers via the web. This research was conducted by discussing food ordering by customers, payment systems, and order reports.
Utilization of Electronic Money
Authors: Surtikanti  , Mustofa R H 
Published: November 2019

Abstract
The purpose of this study is to determine the impact of electronic money (E-money) on financial transactions and economic growth in the community. This research used a descriptive longitudinal method by interviewing several users of E-money as the data collection techniques. The result of this research shows that E-money users prefer non-cash transactions, we also got a new fact that the majority of middle- and upper-class people prefer non-cash transactions because it is more effective and efficient in making transactions. From this research, it can be obtained that E-money can be a legitimate payment system that facilitate the upper-middle and lower-middle class. The existence of E-money will help the user, so they do not need to pay directly.
E-Tracking Application for Reporting Information System
Authors: Sitanggang A S , Kusumaningrum SV 
Published: November 2019

Abstract
The purpose of this research provides services to the public about reports of losses. From the activities carried out it would produce an application called the reporting system through a web-based E-Tracking application that will be applied in the community and the police. In this study also uses the prototype method. That method consists of needs analysis, application testing and application improvement. This application provides an online loss reporting function and the results of the development of the loss, the first follow-up from the police to the community is the ease of managing loss reports, and facilitating notification of developments in reporting to the public. With the existence of the application, it became a connection to people’s trust in the performance of the police, especially for the people in the Coblong area, Bandung, West Java. The presence of this application can help both parties in solving the case of loss of goods / securities with good cooperation.
Facial Expressions Recognition Using Markov Stationary Feature - Vector Quantization and Support Vector Machine Method
Authors: Maliki I , Jarockohir F S 
Published: November 2019

Abstract
Facial expression is a form of nonverbal communication that can convey the emotional state of someone to the person who observes it. Research on the recognition of facial expressions is one of the interesting fields in computer science. This research aims to improve the accuracy of recognition performance. The process carried out in this research is to perform feature extraction and image classification. Markov Stationary Feature - Vector Quantization (MSF-VQ) method is used for feature extraction and Support Vector Machine (SVM) for image classification. Data set in used is 1440 data with six classifications of facial expressions. The results of the testing showed 97.41% which stated that this method could be recommended to be applied in the facial expressions recognition.
Forecasting Methods Comparation Based on Seasonal Patterns for Predicting Medicine Needs with ARIMA Method, Single Exponential Smoothing
Authors: Zahra I A , Putra Y H 
Published: November 2019

Abstract
The purpose of this study is to predict the needs of medicines by using forecasting techniques and calculating the value of Economic Order Quantities. Fluctuations in the use of drugs that occur every year is an obstacle for the drug warehouse in planning procurement in hospitals. The method used in this study is ARIMA time series forecasting for the process of prediction and calculation of EOQ. The results of this study in the form of an estimated value of drug needs for one coming period is shown by the smallest forecasting error value, namely ARIMA (1.0.0) with an error value of 13%, and the results of calculations of the Quantity of Economic Order for future drug needs. Forecasting results between ARIMA and the Exponential Smoothing method show that forecasting has the smallest error value, using ARIMA (1.0.0).
Implementation of Critical Path Method in Project Planning and Scheduling
Authors: Atin S , Lubis R 
Published: November 2019

Abstract
Scheduling in a project is a tool to determine the activities needed to complete a project in a certain order and time frame, in which every activity must be carried out so that the project is completed on time at an economical cost. The purpose of this study is to find out the critical path in project implementation and find out which projects are postponed and which cannot be delayed in their completion which can affect the entire project work process so that the project can be completed on time. The method used in this study is the Critical Path Method (CPM), which is a network method that has a series of activity components with the longest total amount of time and shows the fastest time period of completion. The results of this study indicate that the use of CPMs is able to get the longest total amount of time with the fastest project completion period, project scheduling and project critical paths can be seen more clearly so that the project can be completed on time.