bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis Of Impact Android-Based Literacy Learning Media (Mpba) Application To The Development Of Skills In Interest And Literacy Of Kindergarten Students
Authors: Hartatik  
Published: December 2019

Abstract
Early childhood education is very important and is a very important period for children’s growth. The education process is a process for generating activities in education. Activities can produce changes in cognitive, psychomotor and affective students. This applies to every learning in the teaching and learning process. Student learning success is a learning process that is innovative and innovative. Android games are alternative software that is chosen, with the reason Android tends to be used on mobile drivers such as smartphones and tablet PCs. In the current technological development, children tend to be more familiar with various gadgets, children under five are now events exposed to various gadgets.
With the existence of Android games and supported by attractive features, it can be seen from the t-test for the purpose of the game that is obtained p value in the t test that is p = 0.000 which means that there is an influence of android learning games on child development.
Minimization of palm oil losses on sterilization process by optimization boiling pressure and boiling time
Authors: Febrina Wetri , Yusrizal  , Abrar Aidil 
Published: December 2019

Abstract
Optimization of boiling pressure and boiling time on palm oil processing was studied due to increasing oil palm capacity and quality by minimizing oil losses during sterilization process. We used 3 level of boiling pressure and 5 level of boiling time and analized of it’s effect to the amount of oil losses during the sterilization process. Design of Experiment Methods and Response Surface Methodology helped to see the effect of boiling pressure and boiling time to the amount of oil losses. From the study got a linier model that used to see and anylize the respons. From ANOVA test got the result that boiling time and boiling pressure significantly affected to the amount of oil losses, Optimize boiling time wa 85-90 minute with boiling pressure 2.9 bar and average of amount of oil losses from triplicate data was 1.53%.
Landslide Vulnerability in Residential Areas for Disaster Mitigation in Sawangan District, Depok City
Authors: Puspitasari Peni , Herdiansyah Herdis 
Published: December 2019

Abstract
Disaster occurs due to the interaction of threat factor, vulnerability and inability of the people. The lack of the capacity for decent settlement for the people has extended the use of lands for residential areas in unsuitable zone. Depok city is one of buffer zones of the capital city, Jakarta, with the population growth increasing significantly because of the pressure of the high human migration. The rapid development of an area becomes the trigger of the increasing need for lands. One of the destinations as settlement in Depok city is Sawangan district. Analyzing data technique that will be used is the descriptive analysis with the spatial approach. Map analyzing using the overlay analysis and classification. Based on the result of the overlay analysis from some maps, it shows that Sawangan district has the bumpy physical condition of an area with the slope rate of 3-8 %, population density rate of 4.001-6000 inhabitants per km2. But it has a potency leads to the land movement that is typically medium. It shows that there is a potency of human activity by building the residential-area with the high population density causes the landslide vulnerability tends to be high.
The impact analysis of flood disaster in DKI jakarta: prevention and control perspective
Authors: Wicaksono Adam , Herdiansyah Herdis 
Published: December 2019

Abstract
Flooding in Jakarta is a frequent disaster. Of the 2, 572 disaster events in Indonesia throughout 2018, floods and cyclones dominated more than half of the events, which made it the most frequent disaster throughout the year. This caused by various factors such as climate change, land subsidence, sea level rise and socio-economic growth. The high population in Jakarta, which reached 10.4 million due to the flow of urbanization in the past 30 years, has also added to the level of vulnerability to disaster risk. Based on secondary data that been studied from the results of previous studies, Jakarta has annual flood patterns and larger 5-year floods such as in 1996, 2002 and 2007. According to the risk assessment of flood exposure published by DKI Jakarta National Disaster Management Agency (BNPB) 10.177.570 people are potentially exposed to disasters. Physical losses reached Rp 2, 967, 433 million, and economic losses reached Rp 12, 732 million. This is certainly needed to handle mitigation with well-organized disaster management. For this reason, government intervention is needed to integrate the stakeholders who will contribute. The concept of flood disaster management that is integrated with the role of government in it is expected to be a solution to overcome the problem of flooding that occurs in Jakarta this day, besides that, community participation is also very much needed.
Designing Engineering Data Management System in Research and Development Company
Authors: Nur Muhammad , Andrawina Luciana 
Published: December 2019

Abstract
In the Global Era, Management Information System has become inseparable part of the company. One of the Management Information System that has been considered important in a company is Engineering Data Management System (EDMS). The role of Engineering Data Management System is to store data as well as providing a user friendly access to the data, as long as the product lifecycle appropriates with the control rules defined before. This study took a case in XYZ Company on designing Engineering Data Management System using Windchill PLM (Product Life Management) to optimize the business process. XYZ Company is a private company that works in research engineering and manufacture. This study brought out new concept using Engineering Data Management System and explains the role of EDMS in XYZ Company’s business process.
The Use of Learning Media on the Speaking Subject of Islamic Higher Educations in The Entire Central Java and Yogyakarta
Authors: Faizah Umi , Suwandi Sarwiji , Andayani  , Rahmawati A 
Published: December 2019

Abstract
This research aims at describing (1) the use of learning media on the speaking subject; (2) the opportunity of Islamic mission rhetoric learning media based on scientific approach on the speaking subject. The settings of this research are at Purworejo Muhammadiyah University, Purwokerto Muhammadiyah University, Surakarta Muhammadiyah University, and Yogyakarta Ahmad Dahlan University. Method of this research is a descriptive-qualitative one, namely by describing the findings found in the field obtaining through observation, interview, and questionnaire. Sample of the research consists of 247 students and 4 lecturers. The results of this research are (1) the media used on the speaking subject, among others, are rainbow kicir, doraemon pocket, telling earth, puzzle, doll, puppet, youTube, hand phone, and lap top to support the students speaking competency; (2) there is an opportunity to use Islamic mission rhetoric learning media based on scientific approach because the use of audio-visual media has not been utilized optimally, i.e. the approach and media have not been integrated.
Students’ Problem-Solving Ability in Temperature and Heat Concepts
Authors: Taqwa M. R. A. , Faizah R. , Rivaldo L. , Safitri D. E. , Aini F. N. , Sodiqin M. I. 
Published: December 2019

Abstract
This study aims to determine the problem-solving ability on the topic of temperature and heat. This research is a survey research. The subject of this study consisted of 118 undergraduate physics education program students’ (46 first-year students, 29 second-year students, and 43 third-year students). The research instrument consisted of 4 essay question questions. The results of the analysis show that students’ ability to solve problems about temperature and heat is still in the ‘novice’ category. In solving the problem, 13.56% of students have completed the Visual Representation stage, 68.22% of students have completed the Describe The Physics stage, 79.45% of students have completed the Plan A Solution and Excute The Plan stages, and 22.67% of students have completed the Evaluate The Answer stage. Most students only use mathematical equations without understanding their meaning.
Surface modification for creation of functional materials in molten salts and their application from cryogenic to ultrahigh temperatures
Authors: Kuznetsov S A , Dubrovskiy A R 
Published: December 2019

Abstract
Nowadays coatings are produced mostly by CVD, PVD methods, plasma and detonation spraying. At the same time, utilization of molten salts for coatings electrodeposition is highly attractive. Creation of a rotor cryogenic gyroscope, a biomedical material nitinol-tantalum, highly active, stable catalysts of the new generation in the form of nanostructured Mo2C coatings on molybdenum, a composite material MoSi2-MoB4 for protection of molybdenum microreactors and ultrahigh temperature Nb-Hf coatings has been discussed.
The challenges, solutions and development of high energy Ni-rich NCM/NCA LiB cathode materials
Authors: Chen Yanbin , Song Shunlin , Zhang Xuequan , Liu Yafei 
Published: December 2019

Abstract
In the last three decades, the successful application of lithium ion batteries (LIB) for consumer electronics has laid solid foundation for the rapid development of large format batteries for electric vehicles (EV) and energy storage systems (ESS). Up to now, in most of the commercial LIB, carbon material, e.g. graphite is used as anode material, while the cathode material changes from spinel LiMn2O4 (LMO), olivine LiFePO4 (LFP), to layer-structured material LiNi1-x-y
Co
x
Mn
y
O2, and LiNi1-x-y
Co
x
A
y
O2 (NCA), in order to get increased gravimetric and volumetric energy density. By combining the merits of the high capacity of lithium nickel oxide (LiNiO2), with the good rate capability of lithium cobalt oxide (LiCoO2), and the thermal stability and low cost of lithium manganese oxide (LiMnO2), lithium nickel cobalt manganese oxide (LiNi1-x-y CoxMnyO2, NCM) enjoys outstandingly comprehensive advantages, and turns to be the major cathode material for lithium ion batteries. One way to increase the energy densityof NCM/NCA materials is to increase the Ni content and thus lowering the Co/Mn(Al) content, another way to get high energy density is to increase the charging cut-off voltage. High energy NCM/NCA materials are confronted more challenging issues, like degradated cycle life, severe swelling upon thermal storage, and safety problems. This paper will address such issues, and put forward some feasible solutions.
Investigation of the thermal stability of titanium nickelide tantalum coating using photometric analysis of structural images
Authors: Paliy N A , Ermishkin V A , Belousov O K , Sevostyanov M A , Roshchupkin V V , Minina N A 
Published: December 2019

Abstract
The paper considers the thermal stability of tantalum coatings on TiNi (titanium nickelide or nitinol) used in medicine (especially in endovascular surgery) and having their own characteristics. A method is proposed to control magnetron sputtered tantalum film coatings on titanium nickelide — a method of photometric analysis of structural images (PASI).
Copolymerization of (p-2-ethoxycarbonyl)cyclopropyl styrene with methacrylic acid
Authors: Guliyev K G , Mamedli S B 
Published: December 2019

Abstract
By radical copolymerization the copolymer of p-(2-ethoxycarbonyl)cyclopropyl styrene with methacrylic acid has been synthesized. The copolymerization constants have been determined; Q−e parameters on Alfrey-Price and microstructure of the copolymers have been calculated. It has been revealed that the obtained copolymer has a high optical transparency and sufficiently high photosensitivity, which opens up the possibility of using it as an optically transparent polymer in optics. The conditions of preparation of optically transparent material with required physical-chemical characteristics have been developed.
Obtaining and properties of a composite membrane with a surface layer of cellulose acetate
Authors: Fazullin D D , Fazylova R D , Fazullina L I , Mavrin G V 
Published: December 2019

Annotation
To reduce the concentration of dissolved salts in water treatment processes, a composite nanofiltration membrane with a surface layer of cellulose acetate on a polytetrafluoroethylene substrate was obtained. The cellulose acetate content was 17.6% by weight, upon receipt from a 10% solution of cellulose acetate in acetone. An increase in the membrane moisture capacity after modification from 0.6% to 68.5% was established, which is associated with an increase in the hydrophilicity of the membrane. The contact angle of the membrane with a drop of distilled water as a result of the deposition of cellulose acetate particles on the surface of the original membrane decreased from 130º to 53.8º. According to the results of scanning electron microscopy, it was found that the cellulose acetate particles are not located on the surface of the polytetrafluoroethylene substrate, but in the depth of its structure — in the pores, between the fibers, as a result, open pores overlap. After applying a layer of cellulose acetate to the surface of the membrane, the specific productivity of the membrane decreases by 10 times due to the accumulation of particles of cellulose acetate in the pores of the membrane. The maximum specific productivity of the modified membrane 412 dm3/m2 h, is observed when passing distilled water. The retention capacity of the membrane in terms of total salinity in the separation of tap water with an initial salinity of 323 mg/dm3 was 75%.
A universal basic for creating microsensory devices those are sensitive to changing environmental conditions
Authors: Mukhurov N I , Gasenkova I V , Zhang H , Yu G 
Published: December 2019

Abstract
The main advantages of alumina technology and substrates of anodic alumina with a microrelief in the bulk of the substrate as a universal basis for creating microsensor devices are presented. Microsensors of various types allow you to monitor the state of the environment. Specific examples of the development of microsensory devices for detecting humidity, gas composition in the environment, and the presence of ionizing and ultraviolet radiation are presented.
Structural Investigations of Li1.5Al0.5Ge1.5(PO4)3 glass-ceramics by Solid State NMR
Authors: Pershina S V , Dzuba M Y , Vlasova S G , Baklanova Y V 
Published: December 2019

Abstract
NASICON-type conductors based on LiGe2(PO4)3 are very promising lithium-conducting electrolytes for all-solid-state lithium-ion and lithium batteries. Al-doped LiGe2(PO4)3 solid electrolytes possessed higher conductivity (∼10-4 S/cm at room temperature) and stability versus metallic Li. In this paper, we present the structure study of Li1.5Al0.5Ge1.5(PO4)3 compound. Fast lithium-ion conductor Li1.5Al0.5Ge1.5(PO4)3 solid electrolyte have been obtained through glass crystallization at 820 °C during 8 h. Structural positions occupied by atoms have been examined by solid state nuclear magnetic resonance experiments. 6Li, 7Li, 27Al и 31P NMR measurements have been performed at room temperature.
An investigation of thermal stability of structure and mechanical properties of Al-0.5Mg-Sc submicrocrystalline aluminum alloys
Authors: Shadrina I S , Nokhrin A V , Chuvil’deev V N , Kopylov V I , Bobrov A A 
Published: December 2019

Abstract
This paper presents the results of studying the thermal stability of the grain structure, mechanical properties, and electrical resistivity of the Al-0.5wt.%Mg-xSc submicrocrystalline (SMC) alloys with varying Sc content (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5 wt.%). The SMC alloys were produced by equal-channel angular pressing (ECAP). The alloys with Sc concentration above 0.3 wt.% contained submicron Al3Sc primary particles, the amount of which increased with increasing Sc concentration. High thermal stability of the SMC structure in the alloys was ensured by ECAP at 225 °C whereas the recrystallization onset temperature was 375 °C. The disintegration kinetics of the Al3Sc particles in the SMC alloys was determined by the diffusion intensity along the dislocation cores in the lattice as well as at the grain boundaries.
Crystallization and size effects in the technology of selective laser melting of metal powders
Authors: Zhukov A S , Barakhtin B K , Shakirov I V , Kuznetsov P A 
Published: December 2019

Abstract
A phenomenological model of the formation of phase nuclei by the vapor condensation mechanism over the metal melting zone is formulated. A multifractal analysis of the structure of steels manufactured from powders of different chemical composition by additive technology is presented. It is shown that the solidification of the molten metal is determined by the technological scheme of the selective process.
Study on Plastic Deformation Zone of Titanium Alloy
Authors: Guo P , Zhao Y.Q , Jia G.Y , Hong Q , Hou H.M , Pan H , Zhang Y.Q , Liu D.X 
Published: December 2019

Abstract
During the crack propagation, crack tip contains stress odd singularity and has specific yield range. As the cycling loading continuing, the crack grows in the plastic zone. So the plastic zone is crucial to crack propagation action. In this paper, the crack propagation route was observed in different microstrctures, the deformation characteristic of plastic zone was analyzed for equiaxed structure and lamellar structure. The results show that crack propagation path is more straighter in equiaxed structure than that in lamellar structure. There were more tiny cracks near the crack surface in the lamellar structure during the crack growth, which shows that lamellar structure has a bigger plastic zone during the deformation.The plastic deformation need absorb the energy, which hinders the crack propagation.
Principles of preclinical biomedical studies for biomaterial-based scaffolds intended for bone defects replacement
Authors: Sergeeva N S , Sviridova I K , Kirsanova V A , Akhmedova S A , Karalkin P A 
Published: December 2019

Abstract
Biomedical studies of materials precede their clinical trials. Based on our own experience and literature data, an in vitro and in vivo screening type testing algorithm for bioresorbable materials is presented, which allows one to describe cytotoxicity, cytocompatibility, cell matrix properties, biocompatibility and osteoplastic potential of the studied biomaterials.
Bone cements of calcium-magnesium phosphate and magnesium oxide
Authors: Goldberg M A , Smirnov V V , Khairytdinova D R , Krochicheva P A , Ashmarin A A , Sirotinkin V P , Baikin A S , Antonova O S , Barinov S M , Komlev V S 
Published: December 2019

Abstract
The new bone cements were obtained in the calcium phosphate – magnesium phosphate system. The cement powders were synthesized by precipitation method and calcium-magnesium phosphates and magnesium oxide were obtained. The cement liquids based on Na2HPO4 and NaH2PO4 characterized by pH 3.5-5.5 were used and cements phase composition, microstructure, and mechanical properties depending on pH of cement liquid were investigated. Due to the ability to form high-strength cement stone with compressive strength up to 40 MPa and setting time 10-12 minutes, these materials are promising candidates for use as the bone cements.
Low-temperature bioresorbable composite material magnesium-hydroxyapatit
Authors: Krokhicheva P , Goldberg M , Konovalov A , Ashmarin A , Baikin A , Kargin Yu , Barinov S , Komlev V 
Published: December 2019

Abstract
This work is focused on the development of «Magnesium (Mg) – Hydroxyapatite (HA)” composite for bioresorbable implant obtained by spark plasma sintering method (SPS). The structural-phase state of the samples was studied using the X-ray phase analysis method and scanning microscopy (SEM). It is essential to understand the mechanical behaviour of these materials: compressive strength were determined for material characterization. The obtained composite materials were investigated in the solution simulating the extracellular fluid of the human body (SBF) and NaCl solution, and there was shown the allocation of ions of calcium and magnesium and the formation of calcium-phosphate layer (CFL) on the surface of sintered samples and demonstrated. It follow that the material Mg–HA has a biocompatibility in vitro.
Melt electrospinning of polyethylene fibres for oil collection from water surface
Authors: Malakhov S N , Chvalun S N 
Published: December 2019

Abstract
Polyethylene nonwoven materials were obtained by the melt electrospinning. The average fiber diameter in the produced nonwovens was 5.3 μm, and the packing density was estimated as 5.2%. Wide-angle X-ray diffraction analysis showed that the polymer does not undergo significant changes in the supramolecular structure during electrospinning process: both pellets and fibers are characterized by the presence of reflections typical for the orthorhombic crystal lattice of polyethylene. The obtained materials demonstrate high hydrophobicity and oleophilicity, which allows using them as sorbents for oil spills removal. The maximum motor oil sorption capacity of the resulting nonwovens was 96 g/g.
Effect of heat treatments on the structure and properties of a small-diameter thin-walled tube of a medical nickel titanium alloy
Authors: Kashin O A , Krukovskii K V , Poletika T M 
Published: December 2019

Abstract
The present study examines the effect of annealing at temperatures of 300-500°C on the structure and properties of a thin-walled nitinol tube of composition Ti49.1Ni50.9 used for the manufacture of intravascular stents. Annealing temperature dependences are obtained for the martensitic transformation temperatures, the size of the structural elements of the grain-subgrain structure, phase composition, pseudo-yield stress, and ultimate strength. The effect of the Ti3Ni4 particle precipitation in aging during annealing at different temperatures on the obtained dependences is analyzed.
Modelling the parameters of powder material for the pyrometallurgical refining of platinum alloys
Authors: Pukhova O E , Levchenko S D , Shilyaeva Y I 
Published: December 2019

Abstract
The process of a garnishing layer formation during the pyrometallurgical refining of platinum alloys in the presence of alumina-based powder material has been investigated. The dependencies of the garnishing layer thickness on the alumina powder dispersity and the bulk density have been established. The optimal parameters of powder material have been determined based on the computational and experimental data.
Production of Li1.5Al0.5Ge1.5(PO4)3 ionic conductor from liquid-phase precursors
Authors: Kunshina G B , Bocharova I V , Ivanenko V I 
Published: December 2019

Abstract
The synthesis of lithium-conducting solid electrolyte Li1.5Al0.5Ge1.5(PO4)3 (LAGP) from liquid-phase precursors using available water-soluble salts (LiNO3·3H2O, Al(NO3)3·9H2O, (NH4)2HPO4) and a stable citrate [Ge(C6H5O7)3]5– or oxalate [Gе(С2О4)3]2– germanium complex was studied. Germanium complexes were obtained by dissolving the hexagonal modification of GeO2 in citric or oxalic acid. As a result of the transfer of all initial components to the solution with the formation of a true collective solution, the subsequent interaction proceeded with the formation of a single-phase LAGP product in one stage from an oxalate precursor at 650°C, from a citrate precursor — at 800°C. The synthesized LAGP was studied by XRD, TG-DSC, IR spectroscopy, chemical analysis and impedance spectroscopy. The total ionic conductivity at room temperature was 8·10–4 S/cm and 2.5·10–4 S/cm for LAGP synthesized from oxalate and citrate precursor respectively. LAGP synthesis from oxalate precursor is preferred over synthesis from citrate precursor.