bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bubble formation in liquid Sn under different plasma loading conditions leading to droplet ejection
Authors: Ou W. , Brochard F. , Morgan T.W. 
Published: April 2021

Abstract
Liquid metals have been proposed as potential divertor materials for future fusion reactors, and surface stability is a vital requirement for such liquid metal divertors (LMDs). Capillary porous structures (CPSs) have been applied to the design of liquid metal targets as they can avoid MHD instability by surface tension and provide a stable liquid surface. However, our previous work has found that liquid Sn surfaces can be very unstable in hydrogen plasma even in cases without magnetic fields. To increase our understanding of the interaction of liquid Sn surfaces with plasmas, in this work we systematically investigated the surface behaviors of liquid Sn in different plasma exposures in linear plasma devices, either in Nano-PSI at low flux and without magnetic field, or in Magnum-PSI with strong magnetic field strength. Surface instability leading to droplet ejection has been observed and recorded in the experiments. The ejection of droplets is not dependent on magnetic fields and plasma currents, and is found to be dependent on the plasma species and plasma flux and surface temperature. The CPS meshes applied in the experiments cannot completely avoid droplet ejection but can decrease droplet size and lower droplet production rate. In H plasma, droplets were observed once Sn melted even at low fluxes. For the case of N plasma, the appearance of droplets started at a temperature marginally higher than tin–nitride decomposition temperature. Only at high fluxes (∼1023–24 m−2 s−1) and high temperatures (900–1000 °C) were a few droplets observed in Ar or He plasma. For all cases, the ejection velocities of most droplets were around 1–5 m s−1. Bubble formation, growth and bursting in the plasma-species-supersaturated liquid Sn is proposed as the primary mechanism for the ejection of droplets. Plasma-enhanced solubility is responsible for the achievement of H/N-supersaturated liquid Sn, while high plasma flux implantation is responsible for Ar/He-supersaturated liquid Sn. Once the concentration of plasma species in liquid Sn reaches a certain supersaturation level, nucleation and growth of bubbles occur due to the desorption of dissolved plasma species from the liquid Sn. The formation and bursting of bubbles have been directly observed in the experiment. The sizes of most bubbles were estimated in the range of 40–400 μm or even smaller. A bubble growth model based on Sievert’s and Henry’s laws is invoked to describe bubble growth in liquid Sn.
Inovation of Poverty Eradication Pioner School Model for Scavenger Descent Based on Micro, Small and Medium Enterprises in the Malang
Authors: Kusdiyanti Heny , Zanky Mokhammad Nurruddin , Wati Andy Prasetyo 
Published: April 2021

Abstract
This study aims to develop an Eradication of Poverty Model. Descendants of scavengers through pioneering MSME schools (Micro and Small and Medium Enterprises) in the Malang. This type of research phase one is a research development with the following steps: (1) Analysis of the situation, (2) Identification of respondents ‘characteristics, (3) Identification of respondents’ real needs, (4) based on situation analysis, identification of characteristics and the real needs of the respondents, then the Eradication of Poverty model of termination for the scavenger offspring in the Greater Malang area was developed. Type of Phase two is Action research. The second year is designed for testing (implementation) of the model that has been developed in Phase one, evaluating the model, revising it so that an Eradication of Poverty model in the Greater Malang area is tested. Factors of low interest in scavenger school descent include: environmental conditions, lack of motivation and support from both parents, lack of funds, and low parental knowledge of the importance of education on the eradication of poverty of scavengers. The MSME-based pilot school model was developed by giving material from the Save Street Children (SSC) community. Based on the activity, it was known that there was a need for facilitators from the Malang city environmental department and the education office to mobilize scavengers to participate in MSME-based pilot schools. The conclusion of this research is the known factors of low interest in scavenger school descent. This was overcome by the development of the fostered school model facilitated by related agencies.
HYLBUS (Hybrid Learning Based on Asynchoronous Learning Network): Inovation of Learning Model for Hight School to be up Againts Industrial Revolution 4.0
Authors: Kusdiyanti Heny , Zanky Mokhammad Nurruddin , Wati Andy Prasetyo 
Published: April 2021

Abstract
This study conducted focused on creating learning media based on Hybrid Learning Based on the Asynchronous Learning Network as an effort to improve effectiveness in Entrepreneurship learning. The research and development method carried out by researchers originated from Borg and Gall with the trial subjects, namely teachers who taught in 5 schools throughout Malang. The researcher used two types of validators, namely material expert validators and media expert validators. The researcher used two types of data namely qualitative data and quantitative data with data collection techniques in the form of documentation, questionnaires, interviews, and tests (pretest and posttest) to respond. The data analysis technique used is descriptive percentage technique that refers to Arikunto. This study uses two test cycles to determine the effectiveness of media created for teachers. HYLBUS is a learning media website that is intended for entrepreneurship subject teachers with the basic principle of the Asynchronous Learning Network that integrates several aspects needed by students in enhancing the capture of entrepreneurial learning delivered by the teacher. The advantages of this website are (1) user friendly, (2) responsive, (3) accountable, (4) transparent, (5) trusted. Based on the test results it was found that an increase in student learning outcomes reached 25.76%, besides that there was an increase in teacher activities reaching 19.45% from pre-action to action 1 and an increase of 3.72% from action 1 to action 2 with criteria “Very good” and an increase in student activity by 33.34% from pre-action to action 1, and an increase of 6.33% from action 1 to action 2 with the criteria of “very good”
Microservice API Implementation For E-Government Service Interoperability
Authors: Puspitasari N , Budiman E , Sulaiman Y N , Firdaus M B 
Published: April 2021

Abstract
To improve e-government services released by Communication and Information Technology Office of Samarinda City, each system needs to be able to interoperate even when developed by different developers. Interoperation can be achieved by using one data source which is API (Application Programming Interface) for general data objects such as announcements. Given this condition, API built by using microservice can support further enhancement even if API is developed by developers who use different programming languages. The result shows that microservice API can be used to interoperate in relaying data between e-government services and can be developed using more than one programming language and base codes. Further development of this API can be done by adding more data objects, using AWS Cognito as authorization management, adding AWS Elasticsearch to load and filter data, and by showing data objects in real-time on the front end.
Estimation of Battery Requirements in 600 WP Solar Power Generation Systems
Authors: Saputra Riza Hadi , Sahara Ain , Miftahul Huda A.M. , Aegea Muhammad Authon 
Published: April 2021

Abstract
Solar Power Plant as an effort to meet human needs for electrical energy is the right choice for renewable energy. Important components that exist in Solar Power Plant include solar panels, MPPT, batteries and inverters. The function of the battery is to store reserves of electrical energy generated by Solar Power Plant during the day (charging cycle) and at night (discharging cycle). The amount of battery used is a separate design to be able to optimise the installed solar power plant. With the ideal number of batteries, the Solar Power Plant will be more leverage in terms of charging and emptying. The battery used in the 600 Wp Solar Power Plant system at STT Migas Balikpapan is a 12 V 100 Ah deep cycle VRLA type with a total of two installed in series. This is still considered less than optimal because the battery only has a capacity of 100 Ah. In this study, the ideal number of batteries used for Solar Power Plant was calculated, where the ideal number of batteries for 600 Wp Solar Power Plant at STT Migas Balikpapan was six batteries with each type of VRLA deep cycle of 12 V 100 Ah.
Revitalization Road Map of Vocational Higher Education in Industry 4.0 (a study in Politeknik Negeri Balikpapan)
Authors: Gozali  , Milaningrum Elisabeth , Kusuma Bambang Jati , Damayanti Lilik 
Published: April 2021

Abstract
The industrial revolution 4.0 has shifted some human activities, technology automation in almost of all work fields that has impacts with the skills which are needed by industry. Polytechnic as higher vocational education needs to prepare strategic steps in creating creditable graduates in order to face the challenges in that era. The aims of this study are to examine the revitalization of Balikpapan State Polytechnic in industrial era 4.0. The collecting data were done through observation, interviews, and focus group discussions (FGD). The data obtained were analysed with descriptively qualitative. Based on the analysis, it can be concluded that there are seven aspect of Poltekba revitalization to answer the challenges of the industrial revolution 4.0, such as: (1) Workshop Development, (2) Industrial Involvement, (3) Curriculum Development, (4) Dual system 3-2-1 Implementation, (5) Teaching Factory, (6) Strengthening of Lecturer Competence, (7) TUK, LSP, and Graduate Certification.
The Development of Web-Based Forestry Management Information System
Authors: Riyayatsyah  , Anggriani Profita , Dedy Mirwansyah , Bahrul Muhid 
Published: April 2021

Abstract
The most crucial part in the development of forestry information system is collecting the required forestry data to fulfill the standards set by the Regulation of the Minister of Forestry of the Republic of Indonesia Number: P.02 / Menhut-II / 2010 on Forestry Information System. This process is done manually, and the results are not stored in single storage that leads to data redundancy and time wastage. Therefore, this study aimed to design a web-based Forestry Management Information System that will be named as SeMUT. This system was built to reduce the data redundancy and simplify the management of the required supporting documents. Besides, SeMUT is expected to become the data center of the East Kalimantan Provincial Forestry Office. The development of SeMUT utilized the waterfall model of System Development Life Cycle (SDLC) method that has five main stages, including requirement analysis, design, implementation, testing, and maintenance. This research is expected to be able to propose a web-based forestry management information system which enhances the effectiveness and efficiency of forestry data compilation. This research has developed an application that is useful for collecting data centrally.
Interest Rate, Inflation and Jakarta Composite Index on Digital Media Based Companies Stock Return in Indonesia
Authors: Wahyu Umaryadi Muhamad Eko , Hamdana  , Saragih Dothy Amelia , Burhan Haritsah 
Published: April 2021

Abstract
In this paper, we found the evidence of the effect of interest rates, inflation and Jakarta Composite Index on stock returns of digital-based mass media companies listed on the Indonesia Stock Exchange. Objects have taken as a sample of 5 digital-based mass media companies listed on the Indonesia Stock Exchange with a research period from July 2014 to June 2019. These objects are MNCN, ABBA, SCMA, LPLI, and TMPO. Samples were taken by a purposive method with the criteria of companies that have been registered before the study period and have a balanced company size. The analytical method used is path analysis with multiple linear regression models. Research data shows that MNCN, SCMA and LPLI stock prices tend to weaken, while ABBA and TMPO stock prices tend to strengthen from July 2014 to June 2019. The analysis results showed that the interest rate variable (X1) had a negative and significant effect on stock returns (Y1). The inflation variable (X2) had a positive and not significant effect on stock returns (Y1), the IHSG variable (X3) had a positive and significant effect on stock returns (Y1). Therefore, investors need to look at JCI’s movements to optimize the return of stock digital media-based companies.
CFD simulation of anti-fogging coatings performance in refrigerated display cabinets
Authors: D’Agaro P , Croce G , Suzzi N 
Published: April 2021

Abstract
A numerical procedure for the simulation of both fogging and the defogging process on the glass door of a vertical refrigeration display cabinet for chilled food is presented. The large scale problem within the cabinet (convective air flow and heat transfer, moisture mass transport, unsteady conduction through a multi-glazed door) is modelled via a commercial CFD code, whereas the water layer is modelled, via in-house user defined routines, as a collection of tiny droplets in order to take into account the surface wetting properties, the latent heat contributions and the area effective wet fraction. Local water layer equivalent thickness and time needed for the complete defogging are evaluated for different indoor conditions. The influence of anti-fog coatings is investigated comparing different droplets contact angle, from 30° to 90°.
Impact of indirect and ohmic heating sterilization processes on quality parameters of apple puree: application in a real industrial line
Authors: Pelacci Massimiliano , Malavasi Matteo , Cattani Luca , Gozzi Mario , Tedeschi Fabio , Vignali Giuseppe , Rainieri Sara , George Stéphane , Zuber Francois , Mathiot Patrick , Gervais Sarah 
Published: April 2021

Abstract
The aim of the present work is to investigate the impact of the production process and heat treatment technology to produce sterilized apple puree in the case of a real industrial production line. The technologies considered for the sterilisation process are traditional indirect thermal heating and ohmic heating, while the results will be expressed in terms of residual amount of vitamin C, Furfural content and finally HunterLab colour space (L, a, b value). The samples for the evaluation of the comparison parameters have been taken in 3 different steps of the production process, i.e. in the fresh product, after hot finisher (after extraction) and at the end of the line (after sterilization and bottling). It has been observed that both processes considered showed similar performance for all the various parameters evaluated, leading to a very similar final product. This result is somehow unexpected since the Ohmic technology has demonstrated in the last years to bring significant advantages in terms of preserving of nutrients and of colour stability. This could be since apple puree is a sort of homogeneous product, while the best advantages for the Ohmic heating are expected to be found in heterogeneous products containing pieces or particulate matter. But the main reason is related to the fact that in the present work the focus is on the whole process and not only on the heat treatment technology. One of the aims is to put the attention on the importance of specifically designing the whole production line: the adoption of ohmic heating or other innovative technologies to shield nutrients and colour will be wasted if the rest of the production line is not specifically designed to obtain such objectives.
Mini-scale pulsating heat pipe cooling systems for high-heat-flux electronic equipment
Authors: Cataldo Filippo , Marcinichen Jackson B. , Thome John R. 
Published: April 2021

Abstract
This paper presents a novel passive two-phase cooling system for efficient thermal management of high-heat-flux electronic equipment, namely a mini-scale, flat-plate pulsating heat pipe, by executing experiments on a test bench. Furthermore, cooling tests on an actual 1-U server are also shown. The pulsating heat pipe used in this study is designed and manufactured with micro-channel technology where passive two-phase flow circulation is promoted by the inherent two-phase instability and the competing effect between nucleate boiling and thin-film evaporation. Pulsating heat pipes properly operate with gravity (in vertical orientations) and without gravity (in horizontal orientations) and they are an optimal solution to dissipate a large amount of heat without the need of active drivers (absence of pumping power). The cooling capabilities of the proposed pulsating heat pipe were investigated using different near zero global warming potential refrigerants at various filling ratios to find the optimal thermal performance up to 800 W (corresponding to a heat flux of 25 W/cm2). The minimum overall thermal resistance was measured to be 0.065 K/W, which includes the thermal interface material and the secondary side. This paper shows that passive two-phase cooling using pulsating heat pipes can be a very promising and reliable technology for achieving high power dissipations of next-generation datacentres (and electronic equipment in general).
CFD study of a CI engine powered in the dual-fuel mode with syngas and waste vegetable oil
Authors: Costa M , Prati M V , Simio L De , Iannaccone S , Piazzullo D 
Published: April 2021

Abstract
Syngas production from biomass gasification and its use in combined heat and power (CHP) generation systems is a feasible alternative to traditional fuels in Internal Combustion Engines (ICEs), although its quality is poorer in terms of calorific value and energy density. Therefore, a viable option for its exploitation can be assured if ICEs operate in dual-fuel (DF) mode, where employing non-edible oils (as Waste Vegetable Oils, WVO) as a further residual material may solve issues related both to the utilization of diesel fuels and to the high costs for biodiesel production. The practice promotes a virtuous circle to enhance material recovery without disposal. A combined experimental-numerical activity for the analysis of the performances of a Compression Ignition (CI) engine in the DF mode with syngas and WVO is here presented. An appropriate pre-heating system is mounted on the engine injection line to reduce the WVO viscosity. Experimental data collected in terms of in-cylinder pressure cycle, heat release rates and main pollutants at different loads are used to validate a properly developed three-dimensional (3D) Computational Fluid Dynamics (CFD) model, that helps investigating the detail of the syngas fuelling on power output and emissions.
Numerical and experimental evaluation of flue gas recirculation for syngas combustion
Authors: Allesina G , Puglia M , Morselli N , Pedrazzi S , Parenti M , Ottani F , Tartarini P 
Published: April 2021

Abstract
Biomass gasification can be an interesting solution for the energy production to fight global warming and the environment pollution. The flare apparatus is an essential component of gasification systems, but considering small scale ones, it is often quite simple and not very optimized. A way to minimize the NOx production during the combustion is recirculating the flue gas into the flames, making the combustion zone cold and inhibiting the nitrogen oxides formation. In this work different flare designs were numerically evaluated through OpenFOAM software to find the best flare shape that can guarantee the flue gas recirculation. Simulations results were verified building and testing a flare with an optimized geometry for a small-scale gasification system. Numerical simulation and experimental tests shown that it can be possible to design a simple flare for syngas combustion that guarantee low combustion temperature through flue gas recirculation.
Water Quality Improvement Effective Analysis for Artificial Groundwater Recharge in Urban River Network System
Authors: Xiao Wang , Jun Wei , Kaiyu Cheng , Mingzhi Zhao 
Published: April 2021

Abstract
With increase of population and urbanization, the persistent deterioration of urban rivers has become the most intractable problem for environment management agency. After the boom of pollution control projects implementing such as sewage system and sewage treatment plants building to decrease the pollution load, there is a growing interest on increasing ground water discharge with artificial groundwater recharge work and improving load capacity of target river. Under this background, it is important to study the exact effect of water artificial groundwater recharge work on water quality improvement, especially in the river network area, to give support on exact designment. In this study, the river network in Hanjiang district featured with complex river network has been selected as study area. Based on water quality monitoring result and current load statistical result, a one-dimensional mathematic model of target river network has been set up and the water quality has been simulated with different water artificial groundwater recharge schemes, which considering both river supplementary discharge and water quality factors. Then the simulation results under different effects have been analysed and the optimal scheme has been selected to meet the goals. The analysis results indicate that qualified option is recharging 2 m3/s fresh water of level III, under which, the water quality of study area can achieve the basic standard of Level V as qualified scenic water.
Copper, Nickel, Lead, and Cadmium Concentration in Soils around Industrial Areas from Latacunga, Ecuador
Authors: Cela Jessenia , Bonilla William , Urrutia-Goyes Ricardo 
Published: April 2021

Abstract
Environmental pollution has increased in recent decades as a result of various human activities and the presence of various chemical compounds, including heavy metals. The goal of this paper is to determine the concentration and distribution of copper, nickel, lead, and cadmium in soils around industrial areas from Latacunga, Ecuador. Soil samples were obtained from 19 localities: two zones with influence from the industrial sector and two recreation areas and public access. Samples obtained were pretreated and then analyzed by flame atomic absorption spectrophotometry following USEPA 3050B and USEPA 3052 methodology. Finally, a statistical analysis belonging to a randomized complete block design, an analysis of variance (ANOVA) was applied (confidence level of 95%). The results show that the concentration of the metals analyzed decreased in the order of nickel> copper> lead. Additionally, is it shown that the concentration of nickel exceeds the limits suggested by local regulators in all study zones. On the other hand, Zone 1 and Zone 2 show copper and nickel concentrations that exceed the referenced limits.