bluuebunny/crossref_metadata_2025_split huggingface dataset:
FPGA Implementation of Rake Receiver in Broadband Micro-power Wireless Communication System
Authors: Liu Shaohua 
Published: November 2019

Abstract
Aiming at the problem that receiver performance is seriously degraded by multipath fading in multipath channel, a three-finger Rake receiver design scheme is proposed, based on Chirp spread spectrum technology for multipath search, delay estimation and phase estimation. Firstly, the windowed algorithm is adopted in multipath search to improve the accuracy of multipath search. Secondly, detecting the spacing between multipath peaks can realize the delay estimation of multipath signals. Finally, the multipath signals are merged to enhance the receiving effect, significantly improving the system’s block error rate performance under the multipath channel environment. Matlab simulation shows that adding a Rake receiver in the system can improve performance by about 1.2dB. A multi-switching mechanism is applied in FPGA implementation, in order to reduce the hardware power consumption. FPGA simulation results verify rationality and correctness of the design, indicating that the system meets the requirements of block error rate less than 1% in actual transmission, when the signal-to-noise ratio is -2dB.
A cable partial discharge on-line monitoring method based on GPS clock wireless synchronization
Authors: song Yang , yunbo Wang , jianyou Yu 
Published: November 2019

Abstract
In recent years, power cables from 10kV to higher voltage level are widely used in cities for power transmission. As the main power transmission cable of power transmission and distribution, the most important parameter of its running state is the insulation condition of the cable, which can usually be reflected by the magnitude of grounding current, serious partial discharge or loss angle. This paper proposes a cable partial discharge on-line monitoring method based on GPS clock wireless synchronization (CPD-GPS), through introduceing GPS clock wireless synchronization, CPD-GPS can collect data timely and accurately. Experiments show, our method can effective realized the cable fault monitoring and has very important application value for the safe and stable operation of power grid.
Evaluation of the node importance of power communication network based on multi-factor evaluation indicators
Authors: Zhang Ran , Yuan Pengpeng , Feng Weidong , Zhang Geng , Wang Yanan 
Published: November 2019

Abstract
The continuous development of smart grid has promoted the advancement of the power communication network. And what followed was the complexity of the topology of the power communication network being increasing. In order to evaluate the importance of the network node more accurately, an evaluation method based on the multi-factor evaluation indicators is proposed in this paper. This method integrates the service layer and the topology layer of the network, and then combines the node types, the load factors of the nodes and the probability of failure of the nodes and links as a comprehensive factor coefficient to evaluate the importance of the nodes. The simulation results show that the algorithm proposed in the paper can consider the indicators affecting the importance of the node of the power communication network more comprehensively. It can evaluate the importance of the node more effectively which has a good application value.
EMD-CNN model based condition monitoring and fault warning for power overhead optical cable communication
Authors: Ma Le , Zhou Jinyan , Wang Yutong 
Published: November 2019

Abstract
Optical fiber communication has become the main communication mode of power communication in China. As the carrier and foundation, the stability and security of power communication optical cable is directly related to the reliability and security of power communication network in China. In this paper, the idea of in-depth learning is introduced into the condition monitoring of communication optical cable, taking the all-dielectric self-supporting optical cable (ADSS) as an example. By transforming the image into picture set and choosing the appropriate depth neural network model to analyse the picture, the condition monitoring of communication optical cable can be realized.
Design and Implementation of LED Constant Current Drive Circuit Based on Microcontrollers
Authors: Zhou Dengrong 
Published: November 2019

Abstract
In the paper, the LED light operating feature is analyzed, and the design, simulation and test on peak current control of Buck circuit are carried out to improve the reliability for LED drive circuit. Meanwhile, the PWM waveform of DC-DC switch tube and current waveform of LED Light are simulated and analyzed. Through these ways, it is found that the LED light current waveform is constant with small ripple under this modulation.
The development of classification model of peaberry and civet ground roasted coffee using UV-visible spectroscopy and two different compensation methods
Authors: Suhandy D , Yulia M 
Published: November 2019

Abstract
In this research, an investigation on the influence of particle size variation in the authentication of peaberry and civet ground roasted coffee using UV-visible spectroscopy and two different compensation methods was conducted. A total of 398 samples of peaberry and civet coffee with two particle sizes of 1680 μm dan 297 μm (mesh 12 and mesh 50) were prepared. The all coffee samples were extracted using hot distilled water. The extracted aqueous coffee samples were pipetted into 10 mm of cuvette and the spectral data was acquired using a UV-Vis spectrometer in the range of 190-1100 nm. The result of PCA showed that the samples can be clustered based on types of coffee (peaberry and civet) and based on particle size (mesh 12 and mesh 50) using pre-processed spectral data in the range of 250-450 nm. Using the global calibration model of PLS1 and PLS2, the prediction results for prediction sample set at particle size of 1680 μm dan 297 μm (mesh 12 and mesh 50) were excellent with low RMSEP, low SEP and low bias. This result demonstrated the ability of global calibration model (both based on PLS1 and PLS2) to compensate the influence of particle size variation on the authentication of peaberry and civet ground roasted coffee.
The use of probiotic Lactobacillus plantarum and Lactobacillus bifermentans as antidote of mercury metal (Hg) to the mice Rattus norvegicus
Authors: Dwyana Z , Fahruddin  , Haedar N , Ambeng  , Priosambodo D , Alam M R 
Published: November 2019

Abstract
Methyl mercury is a sort of most toxic mercury which was long since used by society in various fields. Methyl mercury is produced by a methilation process of anorganic mercury compound by metanogenic bacteria in aquatic sediment. The existence of excessive methyl mercury in the environment will be dangerous if entering the body of living beings. The aim of this research was to know the potential of probiotic bacteria spesies Lactobacillus plantarum and Lactobacillus bifermentans (in vivo) as antidote of mercury (Hg) poisoning to the experimental mice (Rattus norvegicus L.) after contacting methyl mercury acetate. This research used 5 various treatments where each of them conducted in 3 times repetition. The treatment which was used as follows; aquadest (positive control), mercury acetate 2 ppm (negative control), and probiotic bacteria Lactobacillus bifermentans; Lactobacillus plantarum; and also mixture culture of them. The observed parameter is the concentration of methyl mercury in blood and also through morphology observation qualitatively. The result of research shows that the giving of probiotic bacteria gives the real effect in decreasing the concentration of methyl mercury in blood. The best potential of probiotic bacteria as an antidote is Lactobacillus bifermentans because it can reduce the concentration of giving methyl mercury around 90,7 %.
Potential analysis Persea americana, Allium sativum and Ficus sepatica as anti-cancer uses in silico docking and ADMET prediction
Authors: Sulfahri  , Iskandar I W , Novriyani I , Damayanti P , Arif Afriani N , Sukmawaty S , Iqraini N , Nurhikmah  , Fidhatami I I , Razak R 
Published: November 2019

Abstract
Cancer has been a major cause of death in several countries, according to a recent report from the International Agency for Research on Cancer (IARC) which more than 300,000 cases diagnosed and killed reaching 145,000 people. Indoensia has provided lots of resources that has capability as anti-cancer. This study aimed to discover bioactivity of potential compound from several Indonesian’s plants i.e Persea americana, Allium sativum and Ficus sepatica to prevent cancer based on reverse docking studies by using PyMOL v1.7.4.5 Software (Schrödinger), the PyRx 0.8 software and SwissAdme Prediction. The seed of Avocado Persea americana has terpenoid that has a potential in cancer inhibitor with Aldo-Keto Reductase family 1 member B10. The main compound of garlic A. sativum is S-allylcysteine and Lysine-specific demethylase as target protein. Ficus sepatica has Antofin as potential compound and Steroid 17-alpha-hydroxylase as the protein. The binding affinity value are -7.8, -5.1 and 8,9 respectively.
Species composition and structure of mangrove in Tamo Rocky Cliff Beach Majene (West Sulawesi, Indonesia)
Authors: Priosambodo D , Juhriah  , Alam M , Al-Anshari M , Putra A W 
Published: November 2019

Abstract
West Sulawesi is locally well known for its rocky cliff beach along the coastline between Majene and Mamuju regency. Dato beach in Majene, for instance, is popular for tourism destination. In the area between Tamo, a small fisherman village and Dato can be found one rocky cliff beach with beautiful scenery. Cliff height varied between 5 m - 60 m. At the base of the rocky cliff stretched a fairly extensive mangrove which is separated from the cliff by the lagoon. This mangrove vegetation is thick, however, the species composition and structure remain unknown. Therefore, research is required to become important information in managing biological resources around the mangrove forest area. The research aims to know the species composition and structure of the mangrove communities in the Tamo rocky cliff beach. The sampling method used purposive sampling with four transects. All transects are combined with nested quadrat. A series of quadrat size, which is 1 x 1 m, 5 x 5 m and 10 x 10 m were used for counting the densities of mangrove seedling, stake, and trees respectively. All transect was set up crossing the mangrove area and perpendicular to the coastline. The result showed that mangrove composition consists of five true mangrove species, such as Avicennia marina, Bruguiera gymnorrhiza, Rhizophora mucronata, Rhizophora stylosa, Sonneratia alba with various associated mangrove species. Diversity and Evenness index was extremely low. In contrast, Simpson and Similarity index was high. Composition and structure of mangrove vegetation in Tamo rocky cliff beach dominated by monoculture stake of Rhizophora stylosa which is an importance value (IV) range between 182.90% - 300%.
Selection of Plastic Degradation Indigenous bacteria Isolated from Tamangapa Landfill Macassar City
Authors: Haedar Nur , Clara Theresia , Fahrudin  , Abdullah As’adi , Fausiah St. , Rapak Meidistria Tandi 
Published: November 2019

Abstract
Plastic is the most widely used polymers in all aspects of human life, including food packaging and pharmaco-cosmetics. The complex structures with long and repetitive chains make plastic difficult to be degraded naturally. Consequently, it will accumulate in landfills and the soil. One solution that can be done to overcome this problem is by biodegradation using microorganisms. This study aims to select bacterial isolates that are able to degrade plastics which are isolated from soil samples at Tamangapa landfill in Makassar City. Sampling of soil containing plastic waste used purposive sampling method at 5 different points at Tamangapa Landfill. Isolation of bacteria was conducted using Nutrient Agar (NA) which added 2% Polyethylene Glycol (PEG) and selection of degradation ability was carried out with liquid Mineral Salt media containing HDPE (High Density Polyethylene) and LDPE (Low Density Polyethylene) media. The degradation ability was observed based on the optical density value (OD) at a wavelength of 600 nm and loss of plastic dry weight for 14 days of incubation. The results of isolation and selection obtained 6 bacterial isolates that were able to degrade HDPE (High Density Polyethylene) and LDPE (Low Density Polyethylene) plastics. T7 isolates showed the highest degradation ability of 6% for 8% HDPE (High Density Polyethylene) plastic and LDPE (Low Density Polyethylene) compared to the other five bacteria isolates.
Viability and role of Beauveria Bassiana as endofit in Corn Bima 11 Tammu Tammu varieties against Aphids sp.
Authors: Daud I D , Agus N , Abdullah T , Dewi V S , Bunga I , Komaria S N , Tuwo M 
Published: November 2019

Abstract
Corn production can be increased by the use of superior varieties both free-range (non-hybrid) and hybrid corn. Hybrid corn can produce higher yields compared to free-roasted corn. Bima-11 Tammu Tammu variety is corn seed from the breeding of B11-126 (female), Mr-15 (male) varieties. One of the pests commonly found in corn plantations is aphids Aphids spp. One of the control alternatives that can be used is applying the entomopathogenic of Beauveria bassiana. The effectiveness of B. bassiana as a control for a number of insect pests has been proven. Damage due to Aphids sp. can be more severe, because these pests can transmit viral diseases to corn plants. This research begins with the preparation of Bima 11 Tammu Tammu varieties, seed viability test, preparation B. bassiana, re-isolation of plant tissue to detect the presence of B. bassiana, and Preparation of Aphids sp. The results showed that endophytic seeds had high viability and B. bassiana as endophytes in corn plants, application of B. bassiana to corn plants proves that it appears that the presence of B. bassiana in corn plants is three weeks after application, and Aphids sp. mortality in endophytic corn plants and in corn plants sprayed with B. bassiana is no different.
Predators effects on mortality of sandfish Holothuria scabra cultured in multitrophic system
Authors: Tresnati J , Yasir I , Syafiuddin  , Aprianto R , Mutmainnah  , Yanti A , Bestari A D , Tuwo A 
Published: November 2019

Abstract
Sandfish Holothuria scabra is a species of high economic value that causes sandfish to be the most captured sea cucumber species, and is an important source of income for fishermen in coastal villages. Sandfish capture causes already over fishing. If the wild population of sandfish is not managed properly, over fishing could cause sandfish extinction. This reason, an alternative efforts are needed to increase sandfish production, such as cultivation and restocking. Sandfish was a species that can live in the estuary region, so that it has the potential to be maintained in brackish water ponds. One of the problems of Sandfish cultivation in the brackish water ponds was the predators attack. This study aims to analyze the predator attack on sandfish. The study was carried out on a microcosm scale by using the tanks. The organism used was Sandfish H. scabra, Nile Tilapia Oreochromis niloticus, and seaweed Gracilaria sp. Mangrove Snail attack can cause death if the sandfish has already eviscerated. The healing process takes one to several weeks, depending on the size of the wound. Nile Tilapia attacks were generally not deadly. Death only occurs if the wound is too deep and causes internal organs to come out, but this was very rare. During the study, only one case occurred in which the sandfish died due to the attack of Nile Tilapia. The sandfish that not injured in the ventral side, and does not suffer from evisceration, the mortality was zero. Sandfish wounds heal within one to three weeks, depending on the surface area of the tegument eaten by Nile Tilapia. Healed wounds appear darker in color.
Non-edible Oil of Cerbera manghas L. Seed From Seram Island - Maluku as Oil Source of Biodiesel Production
Authors: Sutapa I Wayan , Rosmawaty  , Ropa Heni 
Published: November 2019

Abstract
Conversion of the Cerbera manghas L seed oil into biodiesel using homogenous catalys through esterification and transesterification stage have been done. Esterification process was carried out using mole ratio of methanol/oil 1:3, temperature 60-65°C for 2 hours with acid catalyst 1.25% H2SO4. The products were separated between methanol and triglycerides continued by transesterification process using mole ratio of methanol/oil 1:6. Initialy, the methanol have been reacted to NaOH catalyst using the catalyst variation 0.1; 0.2; 0.3; and 0.4%, for 2 hours and the reaction temperature 60-65°C. Biodiesel results were analysed by FTIR, GC-MS, and ASTM. The result show that the optimum biodiesel obtained on weiggt of catalyst is 0.3% NaOH. ASTM the test of results were obtained the propesties of the biodiesel there were: specific density of 0.8808 g/cm3, kinematic viscosity of 6.511 mm2/s, flash point 168°C, pour point 9°C, cloud point 12°C and conradson carbon residual 0.165 wt%.
Synthesis of Poly(Ethyl Eugenyl oxyacetate) as Carrier For Separation of Heavy Metal Ions Fe(III), Cr(III), Cu(II), Ni(II), Co(II), and Pb(II) Using Liquid-Liquid Extraction Method
Authors: Harimu L , Matsjeh S , Siswanta D , Sentosa S J , Sutapa I W 
Published: November 2019

Abstract
Synthesis of poly(ethyl eugenyl oxyacetate), PEEOA, has been conducted. The compound was applied to separate Fe(III), Cr(III), Cu(II), Co(II), and Pb(II) using a liquid-liquid extraction method. The effect of pH, polyeugenyl ethyl oxyacetic ion carrier concentration, extraction time, and metal concentration was optimized to obtain optimum condition. The result showed that the synthesized polyeugenyl ethyl oxyacetic has a yellow color with a melting point 127-1300 °C and yield efficiency of 87%. The formation of polyeugenyl ethyl oxyacetid confirmed with IR spectroscopy and 1H-NMR spectra. The appearance of the absorption band at 1759 cm−1 as stretching vibration of carbonyl (C=O) esther and 1280 and 1373 cm−1 as stretching vibration of carbonyl (C-O-C), chemical shift at 4,74 ppm for proton methylene (CH2-C=0) and chemical shift at 1,27 ppm for proton methyl (O-CH2-CH3). The optimum condition for ion separation has occurred at pH 3-6 for ion Fe(III), pH 5 for ion Cr(III), Ni(II), Co(II), Cu(II), and Pb(II). The carrier volume was optimum at 5 mL (1 × 10−3 M) for Fe (III), 10 mL for Cr(III), Ni(II), and Co(II), and 15 mL for Cu(II), and Pb(II). The optimum extraction time was 2,5 and 20 hours for ion Fe(III) and Cr(III), respectively, and 36 hours for ion Cu(II), Ni(II), Co(II) and Pb(II). The concentration range of metals ion accurately extracted was 0.75 - 5 x 10−4 M for ion Fe(III); 0.75- 2.50 x 10−4 M for Cr(III), Ni(II), and Co(II) and 0.75-1 x 10−4 M for Cu(II) and Pb(II). Compared to other metal ions the respond polyeugenyl oxyacetic acid was best Fe(III) with selectivity order Fe(III) > Cr(III) > Cu(II) > Pb(II) > Ni(II) > Co(II).
Green-route synthesis and characterization of the silver nanoparticles resulted by bio-reduction process
Authors: Roddu A K , Wahab A W , Ahmad A , Taba P 
Published: November 2019

Abstract
The synthesis of silver nanoparticles by using the leaves extract of Abelmoschus esculentus as a bio-reductor agent have been conducted. Leaf extract produced by using the boiling process of the leaves in boiling water. Ag+ ions as a source of silver metal formed by dissolving AgNO3 into distilled water. A solution containing Ag+ ions was added to the leaf extract of Abelmoschus esculentus, followed by an incubation process accompanied by stirring at medium speed. Silver nanoparticles formed were characterised by UV-VIS, FT-IR, PSA and SEM. Based on the results known that the highest nanoparticles formed during the incubation period of 6 days with the size of silver nanoparticles mostly less than 100 nm. SEM results show that silver nanoparticles have a non-uniform cubic shape morphology. Band gap energy for each incubation period 1; 2; 3; 6 and 7 days are 2.263 eV; 2.228 eV; 2.227 eV; 2.096 eV; and 2.227 eV respectively.
Toxicological evaluation and antibacterial activity of crude protein extract from endophytic bacteria associated with Algae Eucheuma spinosum
Authors: Sugrani A , Ahmad A , Djide M N , Natsir H 
Published: November 2019

Abstract
This study evaluated the toxicological and antibacterial activity of crude extract of endophytic bacteria’s protein associated with the red algae Eucheuma spinosum which was produced at various incubation times. The external and internal proteins of the potential bacteria were collected on the incubation times which were 18, 24, 30, 36, 42, 48, and 54 hours. The evaluation toxicological of protein used Brine Shrimp Lethality Test (BSLT) method and the antibacterial activity of protein towards E. coli and S. aureus were measured using the diffusion method. Seven bacteria were successful to be isolated from these algae (ES01, ES11, ES21, ES22, ES23, ES24, and ES25), the Isolate ES25 was a genus of Vibrio and its protein had the potential to be produced. External protein levels were higher than internal, so it continued with the next phase. The extracted protein of (PE42) was active towards S. aureus (12.0 mm) while the extracted protein of (PE36) is active toward E. coli (9.0 mm) and also highly toxic to the larvae of Artemia salina Leach (1.596 μg/mL). The external protein of endophytic bacteria ES25 (Vibrio) associated with red alga Eucheuma spinosum was potentially produced in the time of incubation above 36 hours to get the highest toxicity and active antibacterial.
Cloning and characterization of Rv1980c gene encoding MPT64 Protein from Mycobacterium tuberculosis as a new candidate vaccine of tuberculosis
Authors: Ahmad A , Agus R , Massi M N , Handayani I , Karim H 
Published: November 2019

Abstract
Pathogenic mycobacteria are one of the major causes of human mortality in the word. Mycobacterium tuberculosis is an etiological agent of human tuberculosis. Designing new vaccines including recombinant protein vaccines may be considered as a new approach for preventing or reducing tuberculosis epidemics. In order to construct protein recombinant as candidate vaccine, the Rv1980c gene encoding MPT64 protein was amplified from M. tuberculosis H37Rv strain genomic DNA using the PCR method and inserted into the cloning vector pGEM-T Easy. The recombinant plasmid pGEM-T Easy-MPT64 was then transformed into E. coli JM109 and cultivated under standard procedure, followed by plasmid extraction, PCR amplification, and DNA sequencing. The correct Rv1980c gene was confirmed by DNA sequencing and subcloned into expression vector pQE30Xa to yield recombinant plasmid pQE30Xa-MPT64, and transformed into E. coli BL21 strain. Transformed white recombinant colony was selected, cultured, induced with 40 μM IPTG, and identified using SDS-PAGE electrophoresis method. The molecular weight was found to be about 24 kDa and identified as recombinant protein MPT64. The target gene has been cloned into host E. coli BL-21 strain and expressed successfully as a soluble protein. The recombinant fusion recombinant protein MPT64 paves the way for tuberculosis diagnosis and vaccine development in the future, especially in Indonesia.