bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improving the Mechanical, Water Vapor Permeability, Antimicrobial properties of Corn-Starch/Poly Vinyl Alcoholfilm (PVA): Effect of Rice husk fiber (RH) & Alovera gel(AV)
Authors: Mallick Nirlipta , Soni A.B , Pal Dharm 
Published: May 2020

Abstract
Essentially because of ecological points, petroleum-based plastics are being supplanted by natural polymers. In the most recent decades, the starch idea is outstanding as a green material. Because of the developing interest for Starch biodegradable materials and the film-forming capacity it has been significantly utilized in the food packaging area.Polyvinyl alcohol (PVA) is one of the synthetic biodegradablematerials that has the upsides of good film formation and high thermal stability. It has been utilized as coatings, packaging material, and in drug delivery applications. Aloe vera(AV) gel, an individual is a promising material in food preservation and has great antimicrobial and anti-inflammatory properties. Because of its filmforming capacity, it has been utilized in the edible film and coatings. Naturalfibers from agricultural waste are finding their significance in the food packaging sector because of the numerous favourable circumstances, for example, their lightness, minimal effort and being earth amicable. The rice husk (RH) is acquired from agro-industrial waste, can be utilized as filler in different bio compositesmaterials. Themain purpose of this examination was to investigate the impact of Rice husk fiber and Alovera gel on the Mechanical, Water Vapor Permeability, Antimicrobial properties of Corn-Starch based film.
Structural, morphological and photoluminescence behaviour of Sr10-xBax(PO4)6(OH)2 hydroxyapatite
Authors: Rout Ananya , Agrawal Sadhana 
Published: May 2020

Abstract
This paper reports synthesis of Sr10-x(PO4)6(OH)2 with different concentration of Ba2+ ion by co-precipitation method. To enhance the intensity of photoluminescence properties of strontium hydroxyapatite, barium (Ba2+) ions are incorporated into hydroxyapatite structure. XRD pattern analysis shows single phase hexagonal structure along with space group P63/m. SEM image depicts the deposition of apatite layer on the surface of agglomerated spheroidal grains. FTIR analysis reveals the presence of functional group (PO4) in the synthesized hydroxyapatite. Photoluminescence spectra shows an intense green light emission at 523 nm under 230 nm UV light irradiation.
Synthesis and characterization of CdTe thin film on FTO by electrodeposition technique for CdTe/CdS solar cells
Authors: Verma Lekha , Khare Ayush 
Published: May 2020

Abstract
In this work, the synthesis of the CdTe thin film (absorber layer) on fluorine-doped Tin oxide (FTO) substrate by electrodeposition technique of CdTe/CdS solar cell has been presented. As a result of the superior efficiency in energy conversion by absorbing energy in a broad range of the solar spectrum, thin film CdS/CdTe solar cells have been paid attention worldwide as a potential candidate for photovoltaics (PV). The electrodeposition (ED) technique is suitable for the synthesis of CdTe material due to its ease, low cost, scalability and manufacturability. Usually, the quality of these deposited thin films depends on several growth parameters, and the type of conducting glass substrate plays a crucial role. CdTe material grown up on the top of the FTO coated glass substrate having dimensions 75mm* 25mm*1mm and was characterized for its optical properties by UV-Vis spectrometer (UV-Vis), Photoluminescence (PL) and Fourier transform infrared spectrometer (FTIR). XRD result confirms the cubic crystalline character of the deposited material. The band gap of CdTe film estimated using Tauc’s plot is found to be 1.5eV. It is expected that this article will enrich the features of CdTe/CdS devices for solar energy conversion and stimulate further innovative research interest on this interesting topic.
Effect of precursor ratios on the structural, morphological and optical properties of CBD-CdS films
Authors: Sinha Tarkeshwar , Khare Ayush 
Published: May 2020

Abstract
Cadmium sulfide (CdS) films were deposited on fluorine doped tin oxide (FTO) glass substrates by chemical bath deposition (CBD). X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), photoluminescence (PL), and Fourier transform infrared (FT-IR) analyses were employed to compare the structural, morphological, and optical properties of deposited films. The XRD studies confirmed the cubic crystalline nature of the deposited films, and the intensities of the peaks were found to vary for different precursor ratios. The results of SEM study show that the films were smooth and uniform. The RMS surface roughness values of the CdS films were found to be in the range of 25.42nm to 35.33nm. Energy band-gap values of the CdS films were found in the range of 2.32eV to 2.39eV. Two distinct bands (centred at 489nm and 556nm) were found in the PL emission spectra. S-C-N, Cd-S, and C-S vibrations were observed to dominate in the FT-IR spectra.
An efficient way of material classification using uncertainty assessment
Authors: Sinha Arvind Kumar , Shende Pradeep 
Published: May 2020

Abstract
Analysis of material properties using the available data is a compulsory part of the material classification and is considered as a challenging task in industrial processes. Classification refers to the segregation of objects using known data or knowledge. The uncertainties in the data increase the complexities of material classification. In this paper, we present a methodology to measure uncertainties in the attributes-values. An example illustrates the efficiency, validity, and effectiveness of the proposed method. We find the most significant features for the classification of glass materials using uncertainty evaluation and optimization.
Theoretical investigation on absorption spectral profile of tetrazole liquid crystals: Hexyl, nonyl end groups and solvent effects
Authors: Das Punyatoya , Lakshmi Praveen P. 
Published: May 2020

Abstract
In this article, a theoretical investigation on absorption spectral profile of tetrazole liquid crystals 4-[(2-alkyl)-2H-tetrazol-5-yl] phenyl 4-alkyloxybenzoates (nTPmB; with n=m=6, 9) has been carried out. The hexyl, nonyl, and solvent (DMSO) effects on absorption spectral profiles have been investigated using the CNDO/S, and INDO/S methods. Population analysis of these molecules in the gaseous state has been performed by generalized atomic polar tensor (GAPT) charge distribution scheme for AM1, PM3, MNDO, CNDO/S, and INDO/S methods. The observed π→π*, and n→π* electronic transitions have been reported. The hexyl, nonyl end groups and solvent effects on absorption profiles have been discussed to analyse the photo stability of the molecules. Further, a through comparative analysis of reactivity descriptors has been made. The reported data may offer an insight in determining the end use of compounds.
Application of Kalman-Bucy filter for vessel traffic control systems in the northern sea route
Authors: Istomin E , Sidorenko A , Stepanov S , Petrov Y , Martyn I 
Published: May 2020

Abstract
The article considers the method of ice density concentration prediction based on the implementation of the Kalman-Bucy filter using geospatial data. The developed algorithm of data filtering allows us to assess the effective use of this approach in predicting the density of ice in the Arctic. The key aspects of the model application for the construction of optimal and safe routes of vessels in the waters of the Northern sea route are described.
Substantiation of connection of diagnostic indicators with parameters of technical condition of hydraulic manipulators
Authors: Martynov B , Sidorenkov N , Taraban M 
Published: May 2020

Abstract
At the organization of proactive system of maintenance of mechanisms the technique based on determination of relative probability is applied. But in contrast to the technique, when the machine is for maintenance and adjusted the type and frequency of the hydraulic manipulators (HM) it is necessary to carry out constant monitoring of the technical condition of the main elements of the mechanism. The main elements of the HM, which primarily determine its technical condition, are the distribution system, including the pump, oil pressure distributors in the executive bodies of the HM, as well as the column, the extension-grip joint and the rotator. Nominal and permissible pressure values in the distribution system are determined by the technical documentation on the HM. The paper considers the dependence of the vibration signal on the technical condition of the coupling shaft-gear column HM.
Finding an effective technological chain of the logging process in the natural and production conditions of the Krasnoyarsk region
Authors: Mokhirev A , Rukomojnikov K , Gerasimova M , Medvedev S 
Published: May 2020

Abstract
In the logging process, it is possible to build a technological chain in different ways. When transporting wood from the cutting area, water or land transport can be used. Using of lumberyards and processing of wood on them also increase the multivariance of the technological process. Execution of operations in various natural and industrial conditions differs in productivity and material costs. The efficiency of production depends on the choice of logging technology in dynamic natural production conditions. The authors presented a graphic-analytical model for solving the given task in the publication. The article is devoted to the graphic-analytical model for solving the task. A numerical example is solved for this purpose. The numerical example showed the efficiency of the method of finding a rational technological chain of logging operations in dynamic natural and production conditions.
Enzymatic pretreatment effect on product composition in biohydrocarbon synthesis via metal soap decarboxylation
Authors: Istyami A N , Pratiwi M , Prakoso T , Purwadi R 
Published: May 2020

Abstract
The recent demand of green energy sources has driven technology development into production of renewable fuels. Among the types of renewable fuels, biohydrocarbon is one of the most attractive forms. It can be applied onto current automotive machine without blending with fossil fuel. Biohydrocarbon can be produced from plant oils via decarboxylation of metal soap. Nevertheless, a hydrolysis step to convert plant oils into free fatty acids is required to synthesize metal soap. A low-cost technology to overcome this problem is hydrolysis reaction using lipase enzyme. In this paper, a study was established to determine the effect of enzymatic pretreatment on biohydrocarbon product composition. Results show that enzymatic pretreatment increased selectivity towards diesel fuel fraction, although fractionation will enable utilization of shorter chain fractions.
Phytoplankton (microalgae) as an alternative of renewable energy sources
Authors: Djoru Mery Rambu , Gimin Ricky , Suwari  
Published: May 2020

Abstract
At present, primary energy resources for various industrial activities including transportation and electricity still rely on fossil sources, such as oil, gas, and coal. Fossil resources are increasingly depleted from time to time and cause the impact of erratic price increases, resources are increasingly limited and cause various environmental effects due to emissions of greenhouse gases produced due to burning these fossils. Various biological resources in Indonesia can be used as a source of raw materials for the production of renewable fuels as a substitute for fossils. Research on phytoplankton (microalgae) as an alternative to renewable energy sources has been carried out. This research was carried out in Teluk Kupang, which has been known as a habitat for Algae life and breeding. The purpose of this study is to obtain data on the existence and types of algae that can be utilized as an alternative renewable energy source. The research method used was observation and laboratory testing to determine the types of algae in Teluk Kupang. The results showed there were 34 types of microalgae, including species of Nitzschia, sp and Thallassiosira, sp which had cell compositions in the form of cellulose, glucan and oils (triglycerides) that had the potential to be extracted and utilized for the manufacture of renewable fuels and other valuable chemicals.
Effect of metal type on basic soap pyrolysis produce bio-gasoline
Authors: Puspawiningtiyas E , Pratiwi M , Neonufa G F , Purwadi R , Isyami A N , Elizabeth L , Soerawidjaja T H , Subagjo  , Prakoso T 
Published: May 2020

Abstract
The basic metal soap from oleic acid submitted to pyrolysis to produce gasoline-like hydrocarbon fuels (biogasoline). The pyrolysis was carried out in a semi-batch reactor at 450°C and a feeding rate of 5 g/15 min. The influences of various metal (Ca, Mg, Zn) hydroxides, which are used to made basic soap, have been examined. The bio hydrocarbon of basic metal soap was characterized by GC-FID and FT-IR, showing the formation of paraffin, iso-paraffin, olefin, ketone, and aromatics. The liquid fraction derived from the pyrolysis of basic metal soap was dominated by gasoline (C7-C11) fraction hydrocarbon. The maximum yield of light C7-C11 hydrocarbon was 82.3 %-mol fraction of basic Ca soap and the highest yield of biohydrocarbon reached 34.77 wt.% from pyrolysis of basic Mg soap.
Biohydrocarbon production for jet fuel from palm oil derivative products
Authors: Neonufa G F , Pratiwi M , Puspawiningtiyas E , Purwadi R , Elizabeth L 
Published: May 2020

Abstract
Jet biofuel can be produced from vegetable oils and fats that are rich in lauric acid and myristic acid. Palm kernel oil is known to contain 47.8% lauric acid and 16.3% myristic acid. Jet biofuel production by the thermochemical method through decarboxylation of basic soap made from palm kernel oil has been extensively investigated. The objective of this study was to produce jet biofuel from basic soap made from palm kernel oil. Several metal compounds from the acetate group were selected for use in making basic soap. Decarboxylation of soap was carried out at 350°C and atmospheric pressure for 5 hours in the semi-batch reactor. Zinc metal enhances the yield of jet biofuel after decarboxylation of soap. Approximately 40 and 62 weight% of the jets biofuel had been obtained in this experiment.
Performance efficiency of sand media amended with biochar for phosphorus removal using column filtration
Authors: Rozari Philiphi de 
Published: May 2020

Abstract
Increase of phosphorus concentrations from wastewater could cause a significant impact on water quality deterioration. Thus, it is crucial to regulate nutrient concentrations from wastewater effluents before the effluents are discharged to the environment. Establishment of wastewater treatment is one of the solutions. This study investigated the efficiency of column filtration using sand media amended with biochar to remove phosphorus in the laboratory scale. The experimental design consisted of 6 packed columns based on the proportion of biochar in the sand media (0 – 25%). The columns were fed with 100 mL phosphate solution (10 mg/L) at the flow rate of 66.6 mL/h. The same steps were also performed using a combination of PO4
3--P (10 mg/L) and NH4
+-N (10 mg/L) solution. The results showed that phosphate concentration in the outflow decreased smoothly and in line with the increase of biochar percentage in the sand media. Removal efficiency of PO4
3--P ranged from 60.9 – 80.9 % and 35.9 - 44.2 % for media loaded PO4
3--P and combination of PO4
3- -P and NH4
+-N (1:1). It means that the availability of biochar in the media influenced the amount of phosphorus adsorbed into media.
Secondary metabolites compound of sea plumes gorgonian (Rumphella, Isis and Ellisella) from Maumere Water- East Nusa Tenggara Indonesia
Authors: Teffu Y H , Kase A G O , Trianto A , Wijayanti D P 
Published: May 2020

Abstract
The abundance and diversity of gorgonian sea plumes in the aquatic of Maumere - East Nusa Tenggara lead us to undertake research of their secondary metabolites. The objective of this study was to identify the species sea plumes gorgonian and to characterize its secondary metabolites that had biological activity. Identification of genus was based on morphology characteristics: sclerite forms; while phytochemical tests was undertaken on gorgonian extract of sea plumes. The phytochemical test showed that secondary metabolites of gorgonian extract contained alkaloids, flavonoids, quinone, steroid/triterpenoid, tannin and saponin. The identification results were found three gorgonian genera, namely Genus Rumphella, Isis and Ellisella. The highest yield of gorgonian extract was Rumphella sp. 7.84%. Components of secondary metabolites identified were alkaloids, flavonoids, quinone, steroids, triterpenoids, tannins/phenolics and saponin.
Analysis of mineral content in Hotspring Water samples in Tubbe and Aramaba Village, Pantar Tengah District, Alor-NTT
Authors: Karbeka Martasiana , Botahala Loth , Duka Pither 
Published: May 2020

Abstract
Clean water standards are tasteless, colorless and odorless. Hot spring water in Tubbe and Aramaba villages is used by the community for drinking, cooking, washing, bathing and other needs. However, the physical parameters of the water has no longer met the standard because it is slightly colored and has distinctive odor of sulfur. Low quality of water affects the health of people who consume the water. The main problem is clearly seen from the yellow teeth of the people in Tubbe and Aramaba villages. Therefore, it is important to analyzed water quality to determine the levels of iron (Fe), phosphate (PO4)3+ and sulfate (SO4)2- in hot spring water in Tubbe Village and Aramaba Village, Pantar Tengah District. Iron content testing has been carried out using an atomic absorption spectrophotometer. UV-Vis spectrophotometer has been used to test the concentration of phosphate and sulfate. The measurement results show that the hot spring water samples in Tubbe Village contain 0.04mg / L iron (Fe), 0.09 mg/L phosphate (PO4)3+ and 11,31mg/L sulfate (SO4)2. This value is below the maximum threshold, according to Minister of Health Regulation No. 149 of 2010. The results of the Aramaba Village are 0.04 mg/L; 0.09 mg/L and 11.31 mg/L for iron (Fe), phosphate (PO4)3+ and sulfate (SO4)2-. This value is above the threshold of calcium content according to Minister of Health Regulation No. 149 of 2010.
Synthesis of irregular motion mechanisms for production machine drives
Authors: Martynova T G , Skeeba V Yu , Podgornyj Yu I , Lobanov D V 
Published: May 2020

Abstract
Irregular motion of the working bodies is widely used in mixing equipment. It helps to achieve homogeneity of the mixtures, since the uniform motion may lead to the “dead” zones formation. The purpose of this work is to synthesize the mechanism for driving the mixer’s working shafts which includes an epicyclic transmission with a swing. This paper reports the studied pathways, velocities, and accelerations for different gear ratios at the final link, i.e. the swing. The research methods are analysis and synthesis of irregular motion mechanisms. It was found that in the mechanisms with the lowest pulsation, the amplitude of the angular acceleration change at the distance from the planet gear rotation axis to the pin equal to 14 mm is the smallest of the considered ones. The performance increases by 22 % with this coefficient of non-uniformity. As a result of the conducted research, we determined the main rational parameters for the synthesis of the considered mechanism.
Regulation and stimulation of engineering innovation processes at machine-building enterprises
Authors: Milekhina O V , Adova I B 
Published: May 2020

Abstract
The paper is devoted to the substantiation of certain aspects of the system of regulation of activity and remuneration of process engineers. The research is based on a theoretical model for justifying management decisions based on comparing the costs and benefits of innovation. The object of observation is a machine-building holding within the state Corporation ROSTEC (Russia). Data from self-observations of the working hours of process engineers, their processing and personalized analysis in two projections (ordinary and innovative work) led to the conclusion that there is a resource of time for solving innovative problems and creating breakthrough technologies. The results obtained are taken into account when designing the process of forming remuneration for innovations, which includes three phases. The authors conclude that a well-founded system of regulation and stimulation of innovative labor processes makes it possible to significantly advance in the direction of activation of innovation.
Dynamics of soot formation and burnout in a gas diesel cylinder
Authors: Likhanov V A , Lopatin O P 
Published: May 2020

AbstractCombustion of the methane-air mixture can be accompanied by intensive formation and burning of soot, which will lead to an increase in heat losses and heat stress of the chilindro-piston group. The complexity and difficulty of registering the concentration of instantaneous soot particles make it difficult to study the laws of soot formation kinetics in gas diesel. The mechanism of soot formation during combustion of a methane-air mixture in a gas-diesel fuel is even more complex and less studied, since there is charge heterogeneity and other supercritical parameters. The paper proposes a mathematical model of soot formation and burnout in a gas diesel cylinder, which attempts to take into account the features of combustion of atomized fuel and methane-air mixture.
Generation of XUV spectral continua from relativistic plasma mirrors driven in the near-single-cycle limit
Authors: Böhle Frederik , Thévenet Maxence , Bocoum Maïmouna , Vernier Aline , Haessler Stefan , Lopez-Martens Rodrigo 
Published: May 2020

Abstract
We present experiments using relativistic-intensity 1.5-cycle laser fields at 1 kHz repetition rate to drive surface high-harmonic generation (SHHG) from surface plasmas with controlled density gradient. As a function of the driving pulse carrier-envelope phase (CEP), we observe a transition from a modulated to a continuous SHHG spectrum, indicating the transition from double to isolated attosecond pulse emission. Single shot-acquisitions of XUV spectral continua support the emission of isolated attosecond pulses with an isolation degree of between 10 and 50 for the majority of the driving pulse CEPs. 2D Particle-in-cell simulations corroborate this interpretation and predict percent-level efficiencies for the generation of an isolated attosecond pulse even without spectral filtering.
Magnetic array-templated method for fabrication of polymer nanoporous films
Authors: Ng Jarryd Keng Gene , Rybchenko Sergey I , Lukaschuk Sergei 
Published: May 2020

Abstract
This paper describes the development of a novel method of producing nanoporous polymeric membranes in a cost-effective and reproducible manner. The novelty of the technique hinges on the exploitation of a new type of sacrificial material & structures - self-assembled arrays of magnetic nanoparticles. The arrays are obtained through application of an external magnetic field to a thin layer of colloidal solution of superparamagnetic nanoparticles in a polymerizable monomer; this is followed by photopolymerisation. The resulting columnar structures form the pore templates which when selectively etched away leave an array of nanopores spanning across the polymeric film. The morphological characterisation of the nanopores by scanning electron microscopy and ionic conductivity revealed a very unusual sponge-like pore morphology. The applications which would benefit from the specific pore morphology and arrayed manufacturing are discussed.