bluuebunny/crossref_metadata_2025_split huggingface dataset:
The potency of protein Hydrolysate from Epiphytic bacteria associated with brown algae Sargassum sp. as anticancer agents
Authors: Asmi N , Ahmad A , Massi M N , Natsir H 
Published: November 2019

Abstract
The object of this study is the protein hydrolysates produced from the epiphytic bacteria associated with brown algae Sargassum sp. Hydrolysate protein for crude extract, F1, F2, F3 and F4 are obtained through hydrolysis using the trypsin enzyme. The conditions of reaction at pH 8.0, 37 ˚C, at an enzyme-substrate ratio of 1: 6 with various hydrolysis time (0, 1, 3, 5, 9 and 11 hours). The degree of hydrolysis was determined by using the TCA method and toxicity assay carried out by Brine Shrimp Lethality Test (BSLT) method using the shrimp larvae of Artemia salina Leach. The results of the study show the highest degree of hydrolysis protein was found on time of 9 hours and the highest activity was shown by the F4 with an LC50 value 27.91µg/mL. These findings suggest that hydrolysate proteins from epiphytic bacteria can be a potential source as anticancer against.
Phytochemical analysis and antioxidant activity of soursop leaf extract (Annona muricata Linn.)
Authors: Hasmila I , Natsir H , Soekamto N H 
Published: November 2019

Abstract
Soursop (Annona muricata Linn) is one of herbal plants that are widely used as antidiabetic, anti-inflammatory, insecticidal, antimalarial, anticancer, antibacterial and antioxidant. Soursop leaf has many benefits because it contains phytochemical compounds. This research aimed to identify the phytochemical compounds and antioxidant activity of soursop leaf. This research were carried out in a few steps which are extraction, evaporation, phytochemical tests and measurement of antioxidant activity. The result showed that the ethanol extract of soursop leaf was contained steroid, alkaloid, flavonoid, phenolic and saponin. The ethanol extract of soursop leaf has antioxidant activity by scavenging DPPH radical with IC50 of 141,127 μg / mL.
Photodegradation of remazol brilliant blue using Fe2O3 intercalated bentonite
Authors: Suprihatin I E , Sibarani J , Sulihingtyas W D , Ariati K 
Published: November 2019

Abstract
This paper reports the use of Fe2O3 intercalated bentonite as a photocatalyst to degrade remazol brilliant blue. The photodegradation was conducted by irradiating aqueous solution of the coloring agent and Fe2O3 intercalated bentonite with UV ray at 259 nm. The degradation percentages were observed at various pH, photocatalyst mass, and irradiation duration to obtain the optimum condition of the photodegradation. The observation showed that the optimal photodegradation occurred at pH 4, using 100 mg bentonite-Fe2O3, irradiated for 2 hours. The proses can degrade effectively 200 ppm remazol brilliant blue with a percentage of 98.20 ± 0.07%.
Characterization of Polyurethanes from MDI, PEG 400 and Kepok Banana Hump additives with TGA, DTG and LCMS spectrometers
Authors: Budirohmi A , Ahmad A , Firdaus  , Taba P , Tahir D 
Published: November 2019

Abstract
Polyurethanes from methylene diphenyl isocyanate (MDI), polyethylene glycol (PEG) 400 and banana weevil starch have been synthesized. This polymer has been characterized using thermogravimetric analysis (TGA), differential thermogravimetry (DTG), liquid chromatography-mass spectrometry (LCMS), and polyurethane physical tests which include: tensile and strain tests. Thermal properties can be measured using TGA and DTG devices, which aim to determine the weight of the sample under controlled conditions and cooling at a controlled rate as a function of time. TGA and DTG analysis results showed that KBH starch with a concentration of 15% in phase 1 polymerization reaction occurred at a temperature of 78 ° C, then in phase 2 a mass change of 2.87% occurred and in phase 3 saturation occurred marked by a mass loss of 97.03%. Polyurethane physical test results showed a strain of 34.37% GL and an extension of 8.6733 nm. These results indicate that polyurethane has the potential to be applied as an ingredient in the manufacture of medical devices, that operate under heating conditions
Adsorption of metal ion, Co(II) on Eucheuma spinosum
Authors: Taba P , Auliya W , Kasim S , Nafie N L , Hala Y 
Published: November 2019

Abstract

Eucheuma spinosum is one of the seaweed species that found abundantly in Takalar Regency. We used the biomass of the seaweed as an adsorbent for the removal of metal Co(II) ions from an aqueous solution. The adsorption of Co(II) ion by E.spinosum biomass was carried out in various contact time, pH, and concentration. The concentration of metal ion Co(II) before and after adsorption was determined using the Atomic Absorption Spectrophotometer (AAS). The adsorption capacity of Co(II) ions by E. spinosum seaweed was determined using the Langmuir and Freundlich isotherms. The results showed that the optimum time was 20 min, and the optimum pH was 3. Adsorption of metal ion Co(II) using E. spinosum seaweed was in parallel to the Freundlich isothermal model with the adsorption capacity (Qo) of 3.46 mg g−1. The functional group involved in adsorption of Co(II) metal ions was C-OH groups.
Antibacterial and cytotoxic activities assay from the extract of macroalga Halimeda cylindracea from Gulf of Boni, Indonesia
Authors: Dini I , Soekamto N H , Firdaus  , Supratman U 
Published: November 2019

Abstract
This study aimed to find out the antibacterial and cytotoxic activity of n-hexane, ethyl acetate, acetone, and ethanol extracts from macroalgae Halimeda cylindracea that was collected from Gulf of Boni. The antibacterial activity was evaluated against Stapilococcus aureus, Escherichia coli, and Salmonella typhi with the Kirby Bauer method. The cytotoxic activity was evaluated with a Brine Shrimp Lethality test. Extraction was performed successively with n-hexane, ethyl acetate, acetone, and ethanol for 3 x 24 hours with maceration method and evaporated with a rotary evaporator to obtain dry extract. Antibacterial activity was evaluated by inhibition zone where the cytotoxic was observed by LC50 value of each tested extract. The result indicated that ethyl acetate extract showed active to all bacteria test which acetone extract was active against S. aureus and E. coli, n-hexane extract was active against S. aureus, and ethanol extract was not active to all bacteria test. N-hexane, ethyl acetate, acetone, and ethanol extracts of macroalgae H. cylindracea were toxic toward Arthemia salina Leach with moderate toxicity category with LC50 value 134.90, 281.84, 338.84 and 295.12 µg/mL respectively.
Characterization molecularly imprinted polymers as a selective adsorbent in the solid-phase extraction method
Authors: Fauziah St. , Hartina A , Soekamto N H , Budi P , Taba P 
Published: November 2019

Abstract
The Molecularly Imprinted Polymers (MIP) synthesis with the precipitation method uses more porogen solvent volume has been carried out. The purpose of this study was to obtain MIP which would be applied as a selective adsorbent against β-Sitosterol. The structural characteristics of MIP were carried out using FTIR, SEM, EDS, BET, and TGA. FTIR spectrum shows that functional groups that play a role in the formation of MIP are functional groups of OH, C=C, and C=O. The surface morphology of the MIP was analyzed by SEM and the analysis of very important elements in the formation of MIP was analyzed by EDS. Surface area, pore-volume, and pore diameter were analyzed by BET, and TG analyzed MIP resistance to heat. MIP is a white polymer granule and has better adsorption ability than NIP. The morphology of the rough and porous surface of MIP based on SEM data and EDS data shows that there is a loss of % carbon atoms and % mass respectively 1.88 % and 2.28 % after extraction of β-sitosterol as a printing molecule. BET data show that the pore diameter of MIP is 3.4 nm which includes mesoporous material. Based on the adsorption ability and structural characterization of MIP_MAA-co-TRIM β-sitosterol it is very good to be applied as an adsorbent in the SPE method and chromatography.
In vitro antibacterial and anticancer activity of Zn(II)Valinedithiocarbamate complexes
Authors: Kartina D , Wahab A W , Ahmad A , Irfandi R , Raya I 
Published: November 2019

AbstractA new complex of Zn(II) that contain amino acid valine and dithiocarbamate ligands were synthesized and characterized by using Ultraviolet Visible (UV-Vis), Infra Red (IR) spectroscopy, X-Ray Fluoroscence (XRF), X-Ray Diffraction (XRD), melting point and molar conductance. The complex was prepared by “in situ method” and showed that complexes are successfully synthesis. The invitro cytotoxic complexes compound was examined againts MCF-7 (breast cancer) using cis-Pt drug as a control positive and the complexes exhibit very strong invitro cytotoxic againts MCF-7 based on IC50data is 639,35 µg/mL which indicates that the complex can induce the morphological MCF-7 cancer cells changes towards apoptosis. Complexes compound were evaluated as their antibacterial agents activity against ofmycobacterium tuberculosaH37RV using LJ method and results show these complexes are potential as anti-tuberculosis agents. Therefore this complexes compounds can be use to new drugs compound in the treatment againts of MCF-7 and tuberculosis.
Potential of stigmasterol from EtOAc extract Melochia umbellata (Houtt) Stapf var. Visenia as Dengue Antivirus
Authors: Soekamto N H , Firdaus  , Ahmad F , Appa F E 
Published: November 2019

Abstract
Stigmasterol has been isolated from the stem bark extract of Melochia umbellata (Houtt) Stapf var. Visenia. The methods used include multilevel maceration, fractionation, and crystallization. Elusidation structure of compound based on spectroscopy data IR, 1H and 13C NMR. Stigmasterol obtained has the potential as a dengue antiviral agent with IC50 9.11 μg / mL.
Relationship between distribution of dimethyl sulfide (DMS) and plankton community structure in Spermonde, Indonesia
Authors: Armus R , Noor A , Ahmad A , Lukman M 
Published: November 2019

Abstract
Dimethylsulfide (DMS), particulate dimethylsulfoniopropionate (DMSP) and phytoplankton abundance are measured on the surface of the sea and sub-surface in the spermonde area, the Makassar Strait in January 2018. At the mouth of the Tallo River, domestic runoff affects the dominance (D) of phytoplankton from the Makassar city river flow, and the reduction of nutrients from the sea cannot be predicted. Pangkep river estuary abundance of phytoplankton is more dominant than the genus Chaetoceros sp. The location is relatively strong research at the highest flow velocity at the estuary Pangkep is 10.45 cm/sec, and the lowest is located at the estuary Tallo is 5.87 cm/sec. The most abundant phytoplankton abundance in the west are found in sea level comes from Coscinodiscus sp class with the same abundance percentage composition of 71% and zooplankton groups are most often found originated from Temora sp class with composition percentage of 6.2%. The highest abundance of phytoplankton in the substrate Leptocylindricus sp is 73%, while the highest zooplankton abundance was 4.9%. The average value of the diversity index is 1.11; 0.082 and 0.521 while the value of diversity index, uniformity and dominance at sea subsurface 1.14; 0.088 and 0.55.
A Priority Packet Dissemination Scheduling Mechanism in Vehicular Ad-Hoc Networks
Authors: Jeffry  , Usman S , Aziz F 
Published: November 2019

Abstract
One of the vehicle communication technologies in the Intelligent Transport System is the Vehicular Ad-Hoc Networks (VANETs). VANET is a communication technology between one vehicle with other vehicles so as to reduce the impact of traffic accidents. Quality of Service requirements in VANETs communications has been supported by the standard protocol, IEEE 802.11p WAVE (Wireless Access in Vehicular Environment) protocol. The mechanism used in this protocol is CSMA/CA that divides four access categories in the selection of channel access by ensuring the success of more priority packets compared to the low priority ones. However, if another vehicle has the same priority packet to send, then a collision might happen. This paper proposes a packet deployment mechanism based on priority. Priority packets are estimated based on location and traffic conditions of vehicles, and then the AODV protocol is used for data deployment. Experimental results showed that priority based channel access perform better than CSMA/CA with an increasing PDR average about 24%, throughput of about 0.25 Mbit/sec and delay of about 0.0969 seconds.
An indoor video-based for single face identification among people
Authors: Indrabayu  , Areni I S , Arafah M , Jusman  , Rachmat M P , Nurtanio I 
Published: November 2019

Abstract
The purpose of this research is to build a system that can detect certain face among several people. The system works using face recognition in searching suspects from a database. 30 images and 9 videos are used for training and testing. In the training process carried out several stages: (1) pre-processing of face images, (2) extraction of facial image training features using the Histogram of Oriented Gradient (HOG) method, (3) face classification using the SVM method. There are several steps for testing process i.e.: (1) video frame extraction, (2) cascade classifier method with the Local Binary Pattern (LBP) feature descriptor, (3) HOG for extracting facial features detected in the frames, and (4) SVM as the face classifier. The processed video data is 1920x1080 pixel resolution which has been recorded using a CCTV camera which is mounted on a wall with height and slope angle of 2.5 meters and 60 degrees. There are two goals implemented in this research. The first goal is to find the highest accuracy from several testing of frame sampling by setting the best threshold value. The second goal is to find the lowest processing time.
New concept of universal coding using one step reversible low contrast mapping (1RLCM)
Authors: Mesra H , Tjandrasa H , Fatichah C 
Published: November 2019

Abstract
Universal coding was developed for compressing data that the probability distribution of a symbol is unknown. Universal coding methods encode a symbol using some bits as code based on the coding algorithm. This research introduces a new concept of universal coding by encoding two symbols using Reversible Low Contrast Mapping (RLCM) transform. The proposed method transforms a pair non negative integer to a non-negative integer and a binary number. This research also introduces a compression scheme namely Average Encoding (AE) to compress a sequence of data using the proposed coding method. This method generally yields a higher compression ratio than the Elias Delta, Elias Gamma, and Fibonacci coding when it is tested using the results of differential encoding of some testing images.
Design of intelligent camera-based security system with image enhancement support
Authors: Chyan P 
Published: November 2019

Abstract
Security is a desired condition in order to achieve stability in the life of society. Security issues are often related to efforts to prevent and detect criminal acts in the community and along with technological developments various methods and devices are created and implemented to support security procedures. This research focuses on designing intelligent camera-based security systems with the support of image enhancement feature. The developed security system is the type of active security system that has the advantage of intercepting or providing real-time information on potential criminal acts that occur and this is done through system automation without involving humans as system supervisors. The developed security system is supported with digital image processing software to process snapshot and recorded images from system cameras with the aim of improving quality of visual images for the analysis purpose and also as digital forensic evidence that can be used in law enforcement related to criminal activity. The output of this research is active security system devices with the support of image quality enhancing software that can be used in various security and surveillance needs.
User experience on games development trends
Authors: Persada A G 
Published: November 2019

Abstract
Game industries are emerging and growing rapidly. Developing good game is becoming more complicated today. It required to achieve user satisfaction and good interaction. Designer has to learn more about social aspects alongside technical aspects. These activities embodied as user experience (UX). In fact, UX and game cannot be distinguised each other. However, it is difficult to be understood. Initial survey had conducted in order to test the statement. Students of Informatics Engineering, UII choosen to take survey. Result revealed, even though students understand about UX and game development separately, they confused when asked about UX-based game development. Based on those problems, we conducted literature review on UX-based game development. 36 papers are reviewed and generated three main discussions. First, usability issues in UX-based game development. Second, virtual reality (VR) is becoming the most popular topic. Third, how to measure children as personas in game development. Briefly conclusion, UX and game development are coherent each other in order to achieve user sastisfaction and good interaction. Result of this study can be used as reference for students about the issues of UX-based game development. Even though, this study is not comprehensively produce method yet. It needs further study to strengthen the result and produce method.
Decision support system for predicting increased data on objects of motor vehicle name transfer (BBNKB I) using trend moment method (Case study: wheels 2 and wheels 4 in Samarinda)
Authors: Pakpahan H S , Anandiya O , Hairah U , Wati Masna 
Published: November 2019

Abstract
Transfer of Motor Vehicle Title Fee (BBNKB I) is first-person vehicle ownership. From this BBNKB I data, we can predict the number of vehicles that will enter Samarinda with the trend moment method. Historical data used are UPTB data from January 2015 to December 2018. To determine the prediction results, the existing historical data are used and use the MAPE value to calculate the error value or inaccuracy of the predicted results. Applications that are built using NetBeans with a MySQL database connection, where calculation formulas are included in the application. The end result is the prediction of the number of vehicles for 2-wheeled vehicles in Samarinda in 2017 with an average MAPE value of 0.55%, in 2018 with an average MAPE value of 1.92% and 2019 with an average MAPE value of 1.31 %. Then for 4-wheeled vehicles in Samarinda in 2017 with an average value of MAPE of 0.57%, in 2018 with an average value of MAPE of 0.77% and in 2019 with an average value of MAPE of 0.47%. MAPE criteria can be used to predict object data of BBNKB I wheels 2 and 4 wheels in Samarinda.
Closed Shop Scheduling Optimisation using Max-Plus Automata
Authors: Merdekawati Dian Ayu , Subiono  
Published: November 2019

Abstract
An appropriate scheduling system is needed in manufacturing activities to minimize production time and costs. Flow shop is one type of production flow that widely used in manufacturing. Based on the demand criteria, it has been known as a scheduling problem called closed shop. This scheduling emphasizes the make-to-stock (MTS) which produces a stock. We take the closed shop scheduling case studies from an existing literature and optimize scheduling using max-plus automata optimum. We compare the result with regular scheduling and the previous result in the literature. We show that the result of max-plus automata optimum scheduling are optimum compared than the existing regular scheduling and the existing previous result of the literature.
Construction of (h,k)-Coterie Quorum System Based on Majority Coterie
Authors: Arsal A , Lawi A , Amir A K 
Published: November 2019

Abstract
Quorum system of (h, k)-majority coterie is a set system which elements are a collection of sets k-coterie provided that each element satisfies bicoterie and disjoint properties. Some of related studies have tried to make the construction of this quorum system but constrained by the problem of generalization. In this paper, to overcome the problem we first compile an equation to determine the size of quoru m. Then we arrange quoru ms that satisfies the equation in a quorum system. The way are (a) divide the universe set into m parts so that h parts are separated, (b) construct a quorum that satisfie k-coterie, (c) construct a quorum system that satisfie bicoterie and disjoint properties.
Effect of sodium hydroxide concentration on the tensile strength of coconut fiber
Authors: Arsyad M , Kondo Y , Arman  , Anzarih A M , Wahyuni N 
Published: November 2019

Abstract
The purpose of this research is to determine the effect of the concentration of sodium hydroxide on the tensile strength of coconut fiber. The materials used are coconut fiber, sodium hydroxide solution, distilled water, tensile testing machine, carton, glue. Coconut fibers are soaked for 3 hours in sodium hydroxide solution with concentrations of 25%, 30%, 35%, 40%, 45%, 50%, and 55%. After that, coconut coir fibers are rinsed with distilled water, then shredded in the oven at a temperature of 90°C for 5 hours. After that, coconut fibers were divided into 3 groups. The first group, coconut fiber is used for hydrolysis test which aims to determine the amount of lignin, cellulose, and hemicellulose contained in coconut fiber. The second group, coconut fiber is given a tensile test with standard ASTM 3379-02 to determine the tensile strength of coconut fiber. The third group, coconut fiber is used to observe the surface of coconut fiber with using SEM equipment. Based on the results of hydrolysis and tensile test It was concluded that (a) the concentration of sodium hydroxide had an effect on the amount of lignin, cellulose, and hemicellulose contained in coconut fiber, the tensile strength of coconut fiber, and the roughness of coconut fiber surface, (b) the coconut fiber surface is increasingly rough which allows an increase in bonding strength between coconut fiber and resin, (c) the highest tensile strength was obtained at 30% sodium hydroxide soaking 226,1 N/mm2.
A general variable neighborhood search based on path relinking algorithm for multi-skill resource-constrained project scheduling problem with multiple restrictions
Authors: Dai H , Cheng W 
Published: November 2019

Abstract
This paper proposes a general variable neighborhood search based path relinking algorithm (GVNS-PR) to solving the multi-skill resources-constrained project scheduling problem with multiple restrictions. Integrating a local refinement procedure and a path relinking framework, the proposed GVNS-PR is assessed on two datasets and achieves highly competitive results. One set of benchmark instances which are known in the literature can be used to demonstrate the capability of the proposed algorithm to seek for the high quality schedules, in comparison with the existed state-of-the-art algorithms. The other one revises the previous through adding the researched restrictions into instances information. Two critical components of the proposed algorithm are shed light on to confirm their key role to the successful method.