bluuebunny/crossref_metadata_2025_split huggingface dataset:
Purwoceng chemical characterization by FTIR spectrum and feasibility analysis of jelly purwoceng diversification with the addition of gelatine and carrageenan
Authors: Nughraheni A , Arifan F , Pratiwi M D , Faizah N A , Setyawan A 
Published: June 2020

Abstract
Purwoceng is a Medicinal plant commodity that has very beneficial content to health. Purwoceng is known as Indonesian ginseng, which has almost the same efficacy as Korean ginseng. In this research, the purwoceng chemical group was analyzed using the FTIR spectrum. Aside from analyzing the purwoceng chemical group, feasibility analysis and diversification of the purwoceng jelly were also carried out with physical analysis. Purwoceng has high economic value but its use is limited to medicine, therefore research on the formulation of purwoceng jelly as a new innovation was carried out. The process of making purwoceng jelly is to add gelatin and carrageenan to purwoceng extract according to the formula namely gelatin 26, 28, 24, 22 grams and carrageenan 7, 8 grams stirred until evenly mixed. Citric acid then added stirred till homogeneous and formed a sticky mixture. Then lift and pour into the mold. The produced jellies were then organoleptically tested, their level of preference and water content. The results show that the more carrageenan added, the more water content. Whereas organoleptic test formula II are more preferred. The results of the characterization of the FTIR spectrum indicate that purwoceng has chemical groups such as alcohol, carboxylic acid, esters.
Silicified coal characteristic and distribution at pt mitrabara adiperdana Tbk, north Kalimantan for efficient mine planning
Authors: Winarno T , Qadaryati N , Ginting R A 
Published: June 2020

Abstract
Silicified coal is formed by the enrichment of mineral in the coal seam. Due to the very hard form, silicified coal interferes with the effectiveness of mining causing more time for excavation. The purpose of this study was to determine the characteristics and distribution of silicified coal in PT. Mitrabara Adiperdana Tbk, which is used as a reference for selective mining. This research has conducted mapping which includes surface and subsurface data collection and laboratory tests. Surface data includes geological structure, stratigraphy, distribution patterns and observations of megascopic characteristics of silicified coal inseam 3. Subsurface data include drill point and coal seam cross-sections in Sector Y. Laboratory analysis is carried out from the outcrop coal sample and overburden of seam 3. Silicified coal inseam 3 has two types, which are type A, which is more fragile, and type B which is harder. In general, silicified coal in the research area was formed on the coal layer that has direct contact with the tuffaceous sandstones. In fault areas, silicified coals are found along the fracture zone where coal seams come in contact with tuffaceous sandstones. Thus, the recommended mining area is based on the silicified coal distribution map.
Consumer purchase patterns based on market basket analysis using apriori algorithms
Authors: Efrat A R , Gernowo R , Farikhin  
Published: June 2020

Abstract
Analyzing customer purchasing patterns can help minimarket expand marketing strategies by gaining insight into which items are often bought together by customers. Also, transaction data is a source of information available at the convenience store and one thing that can be used for business decision making. In this paper, we aim to use the Apriori algorithm method to obtain consumer purchasing patterns to analyze consumer purchasing patterns. This system uses a priori algorithm calculation method where the input data is consumer transaction data. Transaction data will be sorted and calculated by providing a minimum support value and a minimum confidence value. In this study, the authors conclude that the results of the analysis of information systems in determining consumer purchasing patterns can be as information to determine sales and in the application of Apriori algorithms can provide information in the form of a combination of consumer purchase patterns based on consumer transaction data with a minimum support value above 10% and the minimum confidence value is above 65%.
Designing advertisement board game and examining factors correlated with board gaming behaviors
Authors: Satrio M , Sanjaya R , Harnadi B 
Published: June 2020

Abstract
Advertising is a form of mass education for people to learn that something exists in a market. In this post-information era, from consumer products to consumer services, every company in various businesses such as airlines, the marketplace, even education have used various advertising media to raise public awareness of the brand. It can be concluded that to raise awareness of a product or public services, advertising is one of the essential parts as well as in the field of education. The study has a purpose to design a board game advertising a program in a university. The board game has the element of advertisement concealed, making the students able to enjoy searching for information about the university and increasing their will to learn about the university. This study results in a board game prototype “Flow Into The System” game tested towards 29 high school students and 9 college students in the age range of 19 to 23. The questionnaires from 38 respondents have been analyzed using SPSS statistical analysis. The finding of analysis proves that the game can make the respondents want to play it again and again because the game is fun to play, making their bonds stronger, and being perceived as useful.
Study on water quality physical-chemical parameters aquaculture areas in Menjangan Besar Island, Kepulauan Karimunjawa, Jepara, Indonesia
Authors: Farantika R , Putro S P , Hadi M , Triarso I 
Published: June 2020

AbstractGood water quality is extremely important to support life of organisms. The purpose of this research is to know the condition of physical and chemical factors in aquatic biota in aquatic ecosystems against sea Menjangan Besar Island. The samples were taken in two sampling times, i.e. August and November 2018. Research locations i.e floating net cage of monoculture and reference areas. Sampling was done in situ and exitu (Laboratory test). Data of abiotic parameters included the composition of DO, pH, salinity, temperature, water current, organic matter content (carbon and nitrogen), phosphate, nitrate, and ammonia. The results were compared with water quality standards based on KEPMEN-LH No. 51 of 2004 for marine biotas. The result showed that the parameters in according to the quality standards KEPMEN-LH No. 51 of 2004 are temperature, pH, salinity, DO, and ammonia while those that have exceeded the quality standards are phosphate and nitrate. The increase in parameters that have exceeded the maximum quality standard derived from natural resources, aquaculture activities, and domestic waste from community activities is quite high.
Assessment of environmental status of coastal mangrove area using macrobenthic assemblages: a study case at Tapak Mangrove area, Semarang, Central Java
Authors: Putro S P , Adhy S , Safrijal H , Muhammad F 
Published: June 2020

Abstract
Macrobenthic structure can be used as a bioindicator in determining the level of disturbance in water ecosystem through their composition, presence or absence spatially and temporally as apart of ecological management. Tapak is a coastal area of Semarang City, Central Java, Indonesia that has potency as an ecotourism area for integrated aquaculture at mangrove area. On the other hand, industrial activity around Tapak coastal area may lead to a degradation of the ecological function of that area. This study aims to assess environmental status at Tapak Mangrove Area through the macrobenthic structure in space and time. Purposive random sampling method was applied, consisting five sampling stations with 3 replicates between March to May 2018. Sediment samples were taken by using Ekman grab and were analyzed through the stages of fixation, rinsing, sieving, preservation, sorting, identification, and enumeration. The biotic parameters observed were the macrobenthic community structure, including species composition, abundance, and diversity, evenness, and dominance indices. Physico-chemical parameters of the water and sediment were measured every month. The Early Warning System (EWS-3SWJ) software was used to assess the level of environmental disturbance at each station. The total of 15 species of macrobenthic assemblages were found. The most common species were Telescopium telescopium, Cerithidea cingulata, and Metapenaeus sp.. The diversity of macrobenthos was considered low at all sampling stations (H’ = 0,56 – 1,52), with marked variability in dominant taxa (D = 0,21 – 0,71). Further analysis using the EWS-3SWJ showed that the environmental status of the Tapak Mangrove Area is categorized as slightly disturbed areas.
Nutritive and antioxidative properties of some selected agro-industrial by-products fermented with the fungus Chrysonillia crassa as alternative feedstuffs for poultry
Authors: Yudiarti T , Isroli I , Yunianto V D 
Published: June 2020

Abstract
Agricultural by-products used as poultry feed in many developing countries. However, their use for poultry feed is limited due to high fiber and lack of nutritional substances (e.g., crude protein). The objective of this study was to evaluate the antioxidant activity and chemical composition of the agriculture by-products after they are fermented with fungi Chrysonillia crassa. Materials were three kinds by-product e.i rice bran, tofu, and palm kernel. Five hundred grams of three kinds of sterilized, dried byproducts placed in a plastic bag then added with 250 ml of aquades (for tofu and rice bran byproducts) and 500 ml to palm kernel byproduct. Five dishes of culture isolates of Chrysonillia crassa with two days old were put and mixed thoroughly in the sterilized by-products and incubated for two days then were dried. All treatments were three replicated. The antioxidant activity and chemical composition were in vitro analyzed. Results showed that the antioxidant activity of tofu improved that is before and after fermentation was 12330.08±0.00 and 1466.96±10.70, respectively. The fermentation also improved protein content. The increased of the crude protein for palm kernel, rice bran and tofu before and after fermentation were 11.81±0.00 to 12.22±0.05; 9.35±0.00 to 10.57±0.09; 168±0.00 to 21.48±0.27, respectively. On the contrary fungal fermentation decreased the crude fibre of palm kernel and rice bran but not for tofu. The decreasing of crude fibre before and after fermentation of palm kernel and rice bran were 31.54±0.00to 27.04±2.60 and 29.67±0.00 to 27.01±0.18, respectively. The fat content of the by-product increased only for rice bran that is 7.45±0.00 to 11.39±1.86, for tofu decreased, and palm kernel was not affected. In conclusion, it was fungal fermentation. Palm kernel, rice bran, and tofu using Chrysonillia crassa increased in fat, crude protein, and decreased crude fibre, however for antioxidant activity was variation in results.
Hybrid AlGaAs nanowires on silicon: growth and properties
Authors: Cirlin G E , Reznik R R , Akopian N 
Published: June 2020

Abstract
In the article, we demonstrate the growth of AlGaAs nanowires on silicon substrates. It is shown that a controlled growth of short GaAs insertions inside AlGaAs nanowires is possible. Optically, such segments shows sharp and intense quantum dot - like emission lines. Our work opens new prospects for integration of direct bandgap semiconductors and single-photon sources on silicon platform for various applications in the fields of silicon photonics and quantum information technology.
Zinc oxide Ce-doped nanoparticles microwave assisted synthesis with the use of different precursors
Authors: Shulga A , Butusov L A , Chudinova G K , Sheshko T F , Guseynov R M , Kochneva M V 
Published: June 2020

Abstract
The study considers the use of various precursors for microwave synthesis of cerium doped zinc oxide nanoparticles its influence on the quality of synthesis. Widely used in various methods precursors were taken for the research. Monohydric and dihydric alcohols - isoamyl alcohol, ethylene glycol, propylene glycol, dipropylene glycol, as well as aliphatic and polycyclic amines isopropylethylenediamine and urotropine was used for the synthesis of zinc oxide nanoparticles doped with 1% cerium in a mass ratio. The obtained nanoparticles were studied by fluorescence spectroscopy, X-ray diffraction analysis and scanning electron microscopy. It was found that the crystallinity of the obtained samples is 85 ± 2%, while the size of the nanoparticles varies up to 30% depending on the precursor used.
Influence of ammonia flow and sublayer material on adhesion properties of carbon nanotubes
Authors: Il’in O I , Il’ina M V , Guryanov A V , Rudyk N N , Fedotov A A 
Published: June 2020

Abstract
The results of experimental studies of the effect of the sublayer material and the ammonia buffer gas flow on the adhesion force of carbon nanotubes (CNTs) are presented. It is shown that the best adhesion is shown by CNT arrays grown on a chromium sublayer, which is due to the hierarchy of their structure. The influence of ammonia flow on the geometric parameters of CNT is shown. The nonlinear dependence of CNT adhesion force on ammonia flow is established. The results obtained can be used to create adhesive coatings of high strength.
Non-radiative relaxation processes in luminescence of InP/ZnS quantum dots
Authors: Savchenko S S , Vokhmintsev A S , Weinstein I A 
Published: June 2020

Abstract
Photoluminescence (PL) thermal quenching of InP/ZnS core/shell nanocrystals of 4.2 (QD-1) and 4.6 (QD-2) nm in diameter is investigated in the temperature range of 6.5-296 K. Observed PL spectra are found to originate from exciton and defect-related transitions. Temperature behavior of the emission bands indicates effects of inhomogeneous broadening due to distributions of quantum dots parameters in the ensembles. PL thermal quenching analysis unveils two non-radiative relaxation channels for each band in both samples. Activation energies of 130 and 119 meV in QD-1 and QD-2, correspondingly, for the exciton band can be assigned to the bright-bright splitting of the exciton fine structure.
The effect of carboxy-methyl-cellulose (CMC) concentration on suspension stability of red guava syrup (Psidium guajava L) during storage
Authors: Amar A , Suryawati A , Nurani D 
Published: June 2020

Abstract
The study aims to obtain the best CMC concentration and to maintain the stability of red guava syrup during storage. The experimental design used for analyzing the results of organoleptic data was Randomized Block Design (RBD) with one treatment, the concentration of CMC (A), consisting of 6 levels, 0%; 0.1%; 0.2%; 0.3%; 0.4% and 0.5%. The experimental design for data analysis results of viscosity, pH and total suspended solids were AxB in RBD factorial pattern (6x4). Factor A is a CMC concentration. Factor B is the length of storage consisting of 4 levels: 0 weeks, 2 weeks, 4 weeks, and 6 weeks. The analysis included organoleptic test, and physical analysis. The addition of CMC affected the total suspended solids, pH, viscosity, and stability of guava syrup and organoleptic test of guava syrup steeping (p=0.05). Using CMC did not have a positive effect on flavor but did affect the stability, color and taste (p=0.05). The results show that the addition of CMC of 0.3% in red guava syrup is the best treatment and able to maintain the stability of the product suspension during 6 weeks storage. The best syrup produced has an average (rather dislike – neutral) 4.9; 4.46; 4.90; and 4.5 in color, flavor, taste and stability respectively. The product has a range of viscosity values 1438-1516 cP, a pH value 7.51-7.73 and a total suspended solid value 5.95-6.09 mg / l during storage 6 weeks.
Optimization of concentration of stevia leaves (Stevia rebaudiana Bert.) and black tea: study on phytochemical composition and antioxidant activity of mixed stevia-black tea solution
Authors: Budianta T D W , Utomo A R , Raharjo S J 
Published: June 2020

Abstract
Tea is used as an ingredient used every day in the diet of Indonesian people, with many health benefits of tea including one as an anti-diabetes compound; while stevia is a natural sweetener to replace sugar. Both ingredients are expected to produce a synergy function as antidiabetic and antioxidant compounds. This study aims to find out how to combine black tea and stevia which both have high activity. This mixture was prepared as a basic ingredient for making stevia-blacktea-cocoa candy. The experimental design for the optimization of phenol content and antioxidant activity (DPPH free radical scavenging) in the process of mixing stevia-black tea was carried out using the Response Surface Method (RSM), a central composite with 2 factors, 1 replication, a total run order of 13, axial point 4, α = 1.414421. Dry stevia tea mixture - black tea leaves are brewed with boiling water (93 ± 2°C, 3 ± 0.5 minutes). From the experiment, it is concluded that after optimization, the highest result acquired is from a mixture of stevia 0.4446% (w/v) and black tea 0.3427% (w/v) with the results of a total phenol value of 326.3626 mgGAE/L sample and a DPPH of 64.5157 mgGAE/L sample.
Physical and mechanical properties of binderless medium density fiberboard (MDF) from coconut fiber
Authors: Puspaningrum T , Haris Y H , Sailah I , Yani M , Indrasti N S 
Published: June 2020

Abstract
Coconut fiber is a natural fiber extracted from coconut coir, a by-product of coconut based product. It is a potential material for fiberboard because it contains high cellulose and lignin which is similar to wood. Binderless medium density fiberboard (MDF) from coconut fiber was produced to reduce the consumption of wood and the emmission of synthetic adhesives such as urea formaldehyde using lignin as natural binder. The purpose of this research were to determine the physical and mechanical properties of MDF from coconut fiber based on SNI 01-4449-2006 and JIS A 5905:2003 and to investigate the effect of oxidation treatment, additional paraffin, and pressing time to the physical and mechanical properties of the fiberboard. The results showed that the fiberboards produced on this research had medium density of 0.44-0.56 g/cm3 which met the standard for MDF. Most of fiberboards from coconut fiber obtained in this study met the standard for physical properties such as density, moisture content, thickness swelling, and screw holding power. However, the mechanical properties such as modulus of elasticity, modulus of rupture, and internal bond of the fiberboards had not met the SNI 01-4449-2006 and JIS A 5905:2003 because of the lack of materials strength.
Potentials of biomass waste sources for heterogeneous catalyst production
Authors: Heryani H , Yanti N R 
Published: June 2020

Abstract
80% of processes in industries in developing countries generally use catalysts, both homogeneous and heterogeneous, derived from biomass. The research aimed to synthesize silica-based heterogeneous catalysts from waste of Sugar palm peel, Pineapple leaf and Orange peel, then carried out characterization of the heterogeneous catalyst used. The method started from the preparation of biomass waste, catalyst characterization including yield of SiO2 in extract, crystallinity, pore size, surface area and catalyst morphology. The yield of SiO2 extract from the Sugar palm peel was 12.281%; Pineapple leaf was 34.131%, and Orange peel was 30.102%. The diffractogram showed that all SiO2 catalyst synthesis had a crystalline phase; The pore size of the catalyst ranged from 3.918 to 5.6512 nm, and the surface area of the catalyst ranged from 14.2137-247 m2 g-1. Morphological test results showed that the catalyst SiO2 extract of Sugar palm peel was composed of small, regular pores while the catalyst SiO2 extract of Pineapple leaf was composed of globular blob, and the catalyst SiO2 extract of Orange peel was composed of very heterogeneous-tight-porous structures. Based on the test results, it is known that the synthesis of heterogeneous catalysts from biomass waste meets the characteristics of standard silica catalysts.
Development of energy self-sufficiency of agroindustry
Authors: Bantacut T , Romli M 
Published: June 2020

Abstract
Agroindustrial production processes consume considerable amount of energy and generate a lot of organic wastes. These wastes pollute the environment because of their rich organic compounds that will undergo decomposition. The main compounds contained in the waste are energy-carrying materials such as fibre, carbohydrates, protein, and oil/fat. The use of these materials as energy sources can save natural resources while cutting the load of environmental pollution. This paper discusses the assessment of adequacy of energy contained in the waste and proposes an integrated flow model to support the agroindustrial production process. The amount of waste obtained from the mass balance model is then multiplied by the energy content of each waste to obtain energy potential. Energy conversion is used to calculate steam (heat) and electricity needed to support the production process. Some examples are given to show that agroindustry has the potential to become an energy independent industry by applying the principle of less input and multiple outputs through the reuse, recovery, and recycling of the waste. Some future research recommendations are proposed to enable the implementation of energy self-sufficient agroindustry.
System analysis and design of aromatherapy products for innovation performance assessment toward competitive commercialization phase
Authors: Hasanah U , Djatna T , Raharja S , Bantacut T 
Published: June 2020

Abstract
Many new essential oil-based aromatherapy products invented by researchers failed to be commercialized and ended up in scientific publication. In fact, many commercialized products were unable to survive in market. In order to avoid these failures, performance of technology has to be assessed. Technology readiness assessment for innovation of aromatherapy products or services represent assuredness to the products. Technological readiness levels (TRLs) are widely adopted to assess the maturity of new technology. The business process model of innovation performance toward commercialization is conducted using System Development Life Cycle (SDLC) method. Through SDLC, the innovation performance system entity and Business Process Modelling Notation (BPMN) were constructed. BPMN which constructs notation of business process shows that the stakeholders involved in innovation performance assessment are innovator, evaluator, research center and investor. TRLs system of aromatherapy products were then developed for innovation performance assessment. It was able to define criteria, attributes, and metrics for performance assessment based on the basic concept of TRLs and aromatherapy. Finally, validation was done using Fuzzy Inference System (FIS). The result shows that the developed TRLs system of aromatherapy products is valid for performance assessment. It is also conforming to TRLs and aromatherapy basic concept.