bluuebunny/crossref_metadata_2025_split huggingface dataset:
Integration Distance Similarity with Keyword Algorithm for Improving Cohesion between Sentences in Text Summarization
Authors: Darmawan Rizki , Wijaya Adi 
Published: June 2019

Abstract
In recent time the exponential growth of textual information available on the Web, end user need to be able to access information in summary form. Commonly the method to get the summary is extraction method. One of extraction method that easier and commonly used is Keyword Algorithm, but this algorithm has a weakness in the cohesion between the sentences. Distance similarity method is one method used for solving the cohesion problem. The idea of this paper is to improve cohesion between sentences based on extraction of keyword algorithm. The hybrid keyword algorithm and the distance similarity method is proposed. The proposed method was compared three distance similarity such as Cosine, Dice and Jaccard that looking for the cohesiveness between sentences according to keyword algorithm extraction and performance as standard of evaluation. The result showed that Dice has the highest cohesion degree is 45.87 %. Although the best performance is Cosine that performance is influenced with gold standard of abstractive human summary.
Developing organic feed stuff as the main component of broiler chickens’ feed with canvas model in East Java: A Case Study of Analysis on Organic Rice and Corn in Malang and Tulungagung
Authors: Sutanto A , Widodo W , Rahayu I D 
Published: June 2019

AbstractIn general, this research aimed to: [1] analyze the market profile and supporting institution regarding the obtainability of productions and demands; [2] investigate the agri-business institution and organization on empowering the organic feed availability especially for the broiler chickens.This research belonged to surveying research through accommodating surveys respectively piloted in Malang and Tulungagung. Therefore, the method for this research referred to survey recruiting 62 respondents in total that was assisted by interview to the main informants, group discussion, and document analysis (converted as secondary data). Moreover, for analyzing the data, the descriptively qualitative and interpretative design was accommodated by means of Business Canvas Model (BCM) approach. By and large, the conclusions of this research were formulated as follows: [1] in accordance with the market profile and supporting institution regarding the availability of productions and demands, the market reinforcement was of necessity in order to advance the productions’ values as well as the farmers’ incomes in supplying the organic feed; and [2] regarding the agri-business institution and organization on providing the broiler chickens with organic feed, the highly serious exertion from all of elements, exclusively all the stakeholders, was of compulsory in addition to empower the progress and success of organic farming. In addition, the management of farmers’ institutions centralizing on production was required to be maintained. Therefore, the collaboration of various farmers’ institutions was of urgency to be reinforced.
Chemistry and Structure Characterization of Bamboo Pulp with Formacell Pulping
Authors: Hidayati S , Suroso E , Satyajaya W , Iryani D A 
Published: June 2019

AbstractBamboo is one of the non-wood materials which can be utilized as raw materials of pulp. The purpose of this work was to study the effect of the ratio of acetic acid:formic acid on the chemical properties of pulp from bamboo. The results of the study showed that increases of the ratio of formic acid able to degraded of cellulose, hemicellulose, lignin content and decreases the pulp yield. The best condition of this research showed on the ratio of acetic acid: formic acid = 90:10. This condition produced the pulp with composition consist are cellulose 66,98%, hemicelluloses 16,83%, and lignin 3,59%, with the yield of pulp is 42,279%
Electrical Resistivity Imaging (ERI) and Induced Polarization (IP) Survey to Solve Water Drought Problem at Alor Gajah, Melaka, Malaysia
Authors: Suryadi A , Batara  , Amir S N 
Published: June 2019

Abstract
Water drought become serious problem during dry season for rice field at Alor Gajah, Melaka, Malaysia. Electrical Resistivity Imaging (ERI) surveys have been conducted in order to locate and delineate groundwater resources by distribution of subsurface resistivity. The survey of ERI was carried out using ABEM Terrameter SAS 400 and ABEM Selector ES10-64 with pole-dipole configuration of electrode. At the same time, Induced Polarization (IP) survey also carried out to support the result of ERI. There are three line profiles with 400 m length and 5 m electrode spacing named PS1, KRBG2 and BB3. From three line profiles, two of them show that the distribution of low resistivity value (20 – 500 Ωm) are located at depth ranging from 20 to 70 m. The low resistivity values are associated with water saturated zone. This result was supported by IP’s results that show at that particular depth the value of chargeability ranging 0 to 4 ms. Meanwhile, line profile BB3 indicate low resistivity value (0.5 – 500 Ωm) but the chargeability value are high (10 – 75 ms) interpreted as clay layer.
Synthesization and characterization of chlorhexidine/calcium phosphate/poly(lactic-co-glycolic acid) bone cement
Authors: Daud N M , Tapsir Z , Idris A , Nasution A K , Saidin S 
Published: June 2019

Abstract
Calcium (Ca) and phosphorus (P) elements are important for bone growth and bone remodeling process while chlorhexidine (CHX) is mainly used as an antiseptic due to its broad antibacterial effects. In this study, CaP nanoparticles were synthesized by a wet chemical route from the precursors of calcium hydroxide (CaOH) and diammonium hydrogen phosphate, (NH4)2HPO4. Poly(lactic-co-glycolic acid) PLGA polymer was incorporated into the mixture of CaP, acted as a matrix binder to form bone cement composite. Different concentrations of CHX (0.5, 1.0, 1.5 and 2.0 mM) were then added into the CaP/PLGA mixtures (CHX/CaP/PLGA bone cements). The bone cements were then characterized by ATR-FTIR, XRD and SEM analyses. The CHX was successfully incorporated into the bone cements, indicated by the appearance of aromatic amine and alkane C–H stretching vibrations which contributed by the ring and long hydrocarbon chain of CHX. The XRD spectra of bone cements showed poorly crystalline phase of apatite. A porous structure of bone cements was also observed with the dispersion of CaP nanoparticles over the PLGA. The CHX/CaP/PLGA bone cement is intended for bone resorption and bone infection applications that require further exploration on its capability to act as bone cement.
Optimization of Bioactive Metabolite Production From Fusarium oxysporum LBKURCC41
Authors: Marlinda S , Teruna H Y , Pratiwi N W , Ardhi A , Saryono  
Published: June 2019

Abstract

Fusarium oxysporum is one of endophyte microbes isolated from dahlia tuber (Dahlia variabilis) which has the ability to produce secondary metabolites. In this research, optimization of chemichal and physical fermentation conditions were carried out. Corn, potato, and sweet potato with particle size of 80 mesh were used as corbon sources to produce secondary metabolite for 5, 10, 15, 20, and 25 days respectively with ethyl acetate was used to extract secondary metabolites. The assessment of antimicrobial activity was then performed against Candida albican, Escherichia coli and Staphylacoccus aureus. A serial of metabolite concentrations 5.7 mg/ml, 3.8 mg/ml, and 1.9 mg/ml were used. The optimum inhibition against microbial pathogen growth was corn for 15 day fementation (C15). The inhibition zone against Candida albicans, E.coli, and S. aureus were 7.62±0.32, 14.15±0.09, and 15.24±0.24 mm respectively at 5.7 mg/ml metabolite concentration. The result of metabolites screening showed overall extract secondary metabolites comprised terpenoid group. The separation of the active ingredients was performed using both Thin Layer Chromatoghraphy and High Performance Liquid Chromatoghraphy (HPLC) depicted 4 component.
Isolation and Identification of Bacteria and Actinomycetes Isolated from Wilting Banana Plants (Musa Sp.)
Authors: Saryono  , Finna P. , Usman P. , Wahyu P. N. , Aulia A. 
Published: June 2019

AbstractIn Indonesia, wilting disease in banana due toFusariumhas spread in several areas. In addition, fungi, bacteria, and actinomycetes are also known to cause the disease. In this research, isolation and identification of bacteria and actinomysetes causing the wilting of rot and rhizosphere were done. Identification used several stages of biochemical tests. There were 40 bacterial isolates with 9 generas, which werePseudomonassp.,Xanthomonassp.,Caulobactersp.,Erwiniasp.,Eschericiasp.,Ralstoniasp.,Neisseriasp.,Staphylococcussp., andProteussp. Whilst 18 isolates of actinomycetes were obtained with 7 generas, includingNocardiasp.,Actinobiosporasp.,Nocardiopsissp.,Streptomycessp.,Streptoverticilliumsp.,Streptosporangiumsp., andMicrobisporasp.
Modeling and Experimental of the Mechanical Behavior of Seat Cushion for Wheelchair Users
Authors: Bui H-T. , Nguyen L-V. , Debray K. , Tao Q-B. , Lestriez P. 
Published: June 2019

Abstract
The cushions assistance to the pressure ulcers (PUs) prevention has like objective to improve wheelchair users by decreasing the effects of pressure between the both surfaces. Innovating honeycomb cushion (HC) containing thermoplastic polyurethane (TPU) which has many advantages was studied using a biomechanical and digital model for simulation. We used the finite element method (FEM) for the cushion simulation and modelization. This method led to the structural decomposition of the cushion in the aim to evaluate his mechanical behavior. This comportment was simulated numerically by FEM on cell of the cushion, then on the whole cushion. The tests of compression carried out with the electromechanical press (INSTRON 33R4204 machine) on HC permitted to determine curves related to his mechanical behavior. The result helps the comparison with the numerical model developed in this study. This result permits to study the distribution of pressure, shearing, friction and the microclimate which are sources of PUs through HC. The idea following this work is to optimize the HC in the aim to present a new product satisfying the needs for wheelchair users. The design of HC for prevention assistance of the scabs in only one layer is possible and present many advantages: optimization of the manufacturing process, improved ventilation, facilitated cleaning and decreasing cost.
Evaluation of Glutathione Production Method using Saccharomyces cerevisiae
Authors: Kresnowati MTAP , Ikhsan NA , Nursa’adah RS , Santoso NN , Susanto YW 
Published: June 2019

Abstract
Industrial interest of glutathione, as a pure substance or accumulated in yeast, has been prominent as a result of various applications of glutathione in food and pharmaceutical industries. Glutathione production by fermentation process is easier and more economical compare to production by chemical and enzymatic reaction. This study aims to evaluate environmental condition to the fermentation process producing glutathione in three different strategies. In the following work, stress conditions and cysteine addition coupled with fed-batch fermentation of Saccharomyces cerevisiae ITBCC R58 for glutathione accumulation have been investigated. Stress conditions applied on this study included temperature shift from 30 to 50°C and 27°C, pH shift from 5 to 1.2 and 8.8, and osmotic stress by addition NaCl to the solution. Another strategy was to add cysteine as one of glutathione precursors into the fermentation medium. Later, the oxidative state of glutathione harvested was also checked. Osmotic stress showed the best result amongst stress variations applied on this work, however combined cysteine addition with fed-batch fermentation stood out as the best strategy in this study. In all experiments, oxidized-state glutathione was identified, indicating the need of a specific method development to harvest glutathione in reduced state.
Mathematical modelling of paddy drying using fluidized bed dryer
Authors: Suherman S , Susanto E E 
Published: June 2019

Abstract
Several mathematical models have been developed to illustrate the drying process of crops, and one of them is thin-layer modelling. However, there are still limited information about mathematical modelling in paddy drying. In this paper, thin layer modelling of paddy drying curve on drying using fluidized bed dryer is presented. The drying paddy was done with drying temperature variations of 50, 60, 70, 80, and 90 °C. The initial paddy moisture content is 33 % dry basis. The drying process was done for 1,5 hours. Paddy moisture was measured every 10 minutes using grain moisture meter. The thin layer models used are Newton, Page, Modified Page, Henderson and Pabis, Logarithmic, Two-term, and Wang and Singh models. Model fittings were done using MATLAB 2015 software by sum square error minimization. Experimental results showed that Modified Page model gave the best results, evidenced by the highest average R2 value of 0.9949 and lowest average RMSE (Root Mean Square Error) value of 0.0631, followed by Page model and Henderson and Pabis model. The plotting of MR (Moisture Ratio) and time at five drying temperatures showed that effective diffusivity (Deff) value ranged from 1.0334 x 10−8 m2/s to 2.1983 x 10−8 m2/s and the value increases as drying temperature increases. The plotting results of ln Deff and 1/T (absolute temperature) showed that the value of diffusivity factor (Do) is 8.5293 x 10−6 m2/s and activation energy (Ea) is 18.11 kJ/mol.
Modification of Sago Starch for Edible Coating
Authors: Sondari D 
Published: June 2019

Abstract
The edible coating film was prepared using native sago starch and modified sago starch with acetylation. The effects of acetic anhydride (7.5%, 15%, 30%, and 45% w/w) on swelling properties of wheat starch granules, amylose content, lipids content, protein content, a degree of substitution, percent acetylation, and gelatinization temperature were investigated. Modified sago starch and native starch were characterized by Fourier Transform Infrared (FTIR), X-ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). As a result, modified sago starch containing 45% w/w acetic anhydride have a degree of substitution 0.12 with acetylation 45%. All modified starch granules exhibited higher amylose content compared to native starch. Higher amylose contents inhibit the extensive granule swelling power, so swelling power decreased while increased amylose content. Edible coating film used were starch concentration 5.0% w/w, and glycerol content 1.0% v/v. Edible coating film made from native and modified sago starch have been studied to hydrophobicity, Fourier transforms infrared (FTIR), water vapor absorption, and scanning electron microscopy (SEM).
Minerals Improvement of Soy Milk by Addition of Drumstick Tree (Moringa oleifera) Extract
Authors: Rachmaniah O , Kusumahati S , Ningrum E O , Kurniawansyah F , Zulaikah S , Ni’mah H , Soeprapto S , Soeprijanto S 
Published: June 2019

Abstract
Soy milk is a traditional beverage widely consumed in Asian countries, one of which is Indonesian. Soy milk has a balanced nutrient combination which is more or less similar to cow milk, excluding its vitamins (vitamins A and B2) and minerals (K, P, and Na). Behind its limitation, soy milk is free of cholesterol, lactose, gluten, and rich of phytochemical compounds. Soy milk has been consumed as an alternative to milk for people with lactose-intolerant problem, and for vegetarian as well. Therefore, a fortified soy milk using water extract of drumstick tree (Moringa oleifera) leaves was developed. A water extract of pandan leaves (Pandanus amaryllifolius) was also added to minimize the strong aroma of leaves/sepat from the M. oleifera extract and to appeal the appetite. Hedonic ranking test as an organoleptic testing method was conducted to identify consumer preferences. The test revealed the soy milk with low addition of leaves M. oleifera extract (0.26 g/L) is correspondents’ more preferable options than higher concentration of extract, i.e. 0.50 and 0.74 g/L. Minerals contents of Ca and Fe were increased to 9% and 32%, respectively, with the addition of 0.26 g/L of the extract. Unfortunately, no vitamins B and C were detected in all variables of added extract concentrations to soy milk.
Defatted Rice Bran a Byproduct of Oil Extraction with Ultrasonic Method for Protein Supplement in Cassava-Flour Biscuits
Authors: Nugrahani R A , Fithriyah N H , Nelfiyanti  
Published: June 2019

Abstract
One of the components in rice bran is oil, which is mainly used for cooking. Because of its high uses, there is also an increase in the supply of the defatted rice bran. Currently, it is used generally as a supplement for livestock feed. Thus, there is a need to diversify their applications to increase protein content in other food sources. The objective of this study is to extract rice bran oil with ultrasonic method, characterize defatted rice bran, and as a supplement in cassava flour biscuits. The method of this research is the stabilization of rice bran by roasting for 10 minutes, extractions of rice bran with n-hexane solvent: 1:4; 1:5, 1:6; 1:7; 1:8, 10-minute ultrasonic technique to remove the oil content, and protein analyses of defatted rice bran. Defatted rice bran is used as supplement for cassava flour biscuits. Simple organoleptic tests were conducted based on respondents’ preference. Results showed that there was a significant correlation between rice bran: solvent ratios and protein contents in defatted rice bran. The highest protein content was found at 18.31% in rice bran: solvent ratio 1: 5. The most preferred by respondents in its application for cassava flour biscuits was 13.6%.
Iodization of Local Salt Based on Purification Technique using Saturated Brine Washing Method
Authors: Widjaja T , Altway A , Gunardi I , Pudjiastuti L , Nury D F , Nabila A F , Prasetyawati N , Saifulloh M , Noviyanto  
Published: June 2019

Abstract
Based on Indonesia National Standards (SNI), Indonesian local-salt is currently unavailable to produce high-quality salt. This study was aimed to investigate the purification process of local salt that has been carried out by local salt farmers in Sumenep, Madura Island, Indonesia and to determine the highest level of NaCl content from local salt using a washing method to make iodized salt. Purification process involves washing technique using a nearly saturated brine. The research was conducted in various particle-size (10-20 mesh and 20-35 mesh), salt/brine ratio (1:20, 1:40, 1:60), duration (10, 30, 60 minutes) and stirring speed (100, 200, 300 rpm). The highest NaCl content of 94.45 % was obtained at the washing process using the salt of 20-35 mesh at 1:60 ratio with washing time of 30 minutes at a speed of 100 rpm. The result of the process shows a decrease of Calcium and Magnesium levels by 95.56 %. In iodization process, the determination of the highest NaCl concentration was carried out using washing brine method and spray mixing injection was also done to develop a stable salt formulation. The optimum stability of KIO3 in salt was observed as a function of time.
Synthesis of nickel – hydroxyapatite by electrochemical method
Authors: Nur A , Jumari A , Budiman A W , Wicaksono A H , Nurohmah A R , Nazriati N , Fajaroh F 
Published: June 2019

Abstract
The electrochemical method in two chambers with the bipolar membrane has been used to produce the nickel – hydroxyapatite particle. Hydroxyapatite is used as the supported catalyst for nickel catalyst. In this work, in-situ electrochemical synthesis in two chambers with bipolar membrane has been used in the formation of nickel-hydroxyapatite. A simple electrolysis cell from acrylic was used. The anode and the cathode were set parallel with a distance of 3 cm and immersed in the solution at a depth of 2 cm. The anode and the cathode were connected to a DC power supply. The particle was produced in the electrolysis cell. In the anode chamber, the pH solution decreases for the time of electrolysis while in the cathode chamber the pH solution increases. The nickel – hydroxyapatite particle is formed in the cathode chamber. There is no particle in the anode chamber. At the lower current density, the first formed is brushite. At the higher current density, brushite converts to HA. The higher current density the greater the chances of HA formation. The increase in the initial concentration of NiCl2 accelerates the increase of the pH of the electrolysis solution.
Formation of Carbon Fibres From Polymer Poly(vinyl alcohol)/Acetylene Black using Electrospinning Method
Authors: Yuniar R A , Widiyastuti W , Setyawan H , Purwaningsih H , Machmudah S , Anggoro D 
Published: June 2019

Abstract
Carbon fibres are important materials due to their excellent properties. Carbon fibres were formed by blending Poly(vinyl alcohol) (PVA) and a high conductivity material of Acetylene black (AB). Electrospinning technique was used to fabricate PVA and AB solutions in demineralized water. Electrospinning is an efficient technique for the formation of polymer nanofibers. The effects of solution concentration and AB contents on morphological appearance and diameter of those as-spun fibres were investigated by scanning electron microscopy (SEM). Iodine treatment on the fabricated PVA/AB composite was successfully achieved in order to build up the carbonization process and retained their original fibrous structure. The mass of iodinated nanofibers at 80 °C for 24 h increased about 130 %. The mechanism of iodine uptake by electrospun PVA/AB fibres have been obtained by thermal behaviour and its morphological characteristics. It was found that iodine treatment played an important role in changing the morphological structure during the carbonization process. With the iodine treatment of PVA/AB precursor fibres successfully converted into thin carbon fibres and SEM analysis confirmed that the diameter of fibres was about 290 nm. The resulted pure fibres and iodine treatments show guarantee for production carbon fibres.
Nano Carbon Produced by Advanced Mild Hydrothermal Process of Oil Palm Biomass for Supercapacitor Material
Authors: Larasati T D , Prakoso T , Rizkiana J , Devianto H , Widiatmoko P , Nurdin I 
Published: June 2019

Abstract
Palm oil waste is an abundant biomass resource in Indonesia that is not well utilized as a raw material for producing high value-added materials. One product that is possible to be manufactured from oil palm biomass is activated nano carbon. Characteristics of high porosity and good conductivity will lead the activated nano carbon suitable as an electrode of supercapacitor material. Preparation of activated nano carbon is conducted by two main steps namely carbonization and activation. In this research, carbonization is done by hydrothermal process while activation is done by physico-chemical activation. This study focused on manufacturing activated nano carbon from empty fruit bunches of oil palm with hydrothermal carbonization for supercapacitor applications. The activation of mesopore area of the carbon has been taken place by using ZnCl2 and CaCl2 as a chemical activating agent during the hydrothermal process. The activated nano carbon produced from empty fruit bunches has a surface area of 41-1571 m2/g and a pore size of 2.0–6.8 nm. In this study activated nano carbon is used as a working electrode in symmetric hybrid supercapacitor.