bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of interferometric SAR using Sentinel-1A for flood monitoring in South of Sulawesi, Indonesia
Authors: Jefriza  , Lateh Habibah , Yusoff Izham Mohammad , Abir Ismail Ahmad , Syahreza Saumi , Razi Pakhrul , Rusdi Muhammad 
Published: July 2020

Abstract
An updated information of flood mapping that recently occurred in South Sulawesi is an important necessity for site policy makers. Mapping of flood area during or soon after the flooding event is tremendous hardwork. However using active-remote sensing namely InSAR (Interferometric Synthetic Aperture Radar) technique can overcome these limitatations. To achieve it, at least two radar images have to be obtained which is 1 image before and 1 image during/after flood event. We selected 2 images Sentinel-1A GRD (Ground Range Detected) data for the same pass direction and the same time acquisitation with polarization VH (Vertical-Horizontal), 12 days of temporal baseline. The images were then processed by SNAP (Sentinel Application Platform) Toolbox. The results show that Sentinel-1A succeeded in detecting and monitoring flood event, where inundated of water in Tallo River is clearly visible in VH polarization.
SAR Sentinel-1: mitigation strategies for earth’s surface displacements in Aceh, Indonesia
Authors: Jefriza  , Lateh Habibah , Yusoff Izham Mohamad , Abir Ismail Ahmad , Syahreza Saumi , Razi Pakhrul , Rusdi Muhammad 
Published: July 2020

Abstract
Gayo plateau, Aceh-Indonesia is an urbanized areas affected by tectonic phenomena due to the presence of the Great Sumatran Fault, which extends from the north in Aceh to the south in Lampung. This area was affected by strong seismic phenomena (Gayo plateau earthquake on 2 July 2013, MW 6.3) which induced landslide and deformation. InSAR (Interferometric Synthetic Aperture Radar) application using Sentinel-1 times series with Terrain Observation Progressive Scans (TOPS) mode has permitted a short acquisition repetition cycle, an extremely large coverage, a high spatial resolution with respect to the covered area and a small baseline separation particularly suited for interferometry application. All of those characteristics suggest an intensive exploitation of these data through the use of the interferometry technology and in particular the stacking interferometry for monitoring ground surface displacement. Persistent Scatterer (PS) and Quasi – PS (Q-PS) techniques were used in this research. The results of PS, Q-PS and combination of both techniques with ascending and descending of Sentinel-1A were presented in this paper. The SARPROZ software which PS and Q-PS technique seems to be the best candidate for this application relative to the morphology and large extension of the Lut Tawar Lake in the Gayo plateau. SAR images since 2017 were downloaded over the Lut Tawar Lake. This allows taking into measures for seismic hazard mitigation widely in Gayo plateau. Based on the result processing the Gayo Plateau is movement with 20 mm/year.
GIS-based study of groundwater monitoring of villages, Karhe Region, Maharashtra, India
Authors: Navale Vaishali , Mhaske Sumedh 
Published: July 2020

Abstract
This paper examines that, in the current pilot study 10 groundwater samples from 2017 to 2019 from dug wells were collected by making waypoint location of each sample by using GPS-essential receiver. The hydrological data are collected for two seasons such as dry season and wet season this study called the Double Water Table Fluctuation method. The WTF method in the dry season gives the specific yield and wet season gives the rainfall recharge. In the study area, the water table level is near about below 8m from the ground surface. The Pre-monsoon water-table level is monitored during the month March and Post-monsoon level is monitored during the month of July, etc. Groundwater presence dependence upon characteristics of terrain along with structural Geology, Geomorphology and LU/LC of the area. This study is useful for water management to local authority and farmers for irrigation purpose. The Groundwater recharge in the study area is decreased due to declines in rainfall and return flow to Groundwater from Irrigation and less pressure of surface water body. The groundwater recharge is more during the dry seasons because of more backflow from Irrigation during the Pre-monsoon seasons. The Thematic map of the study area is prepared by using Arc GIS 10.4 software.
The Implementation of Road Evaluation and Monitoring System at The City Road Conditions
Authors: Daniyati Martri , Setyawan Ary , Pramesti F. Pungky , Setyawan Bayu 
Published: July 2020

Abstract
The rapid development of new city road infrastructure causes the ignorance of Indonesian people to think about maintaining road infrastructure that has been built. This is indicated by the weak effort in maintaining road infrastructure by the agency, for example: the absence of a good historical record of a road section when it was started to be built until it is maintained, there is no continuity and integration in recording the history of road segments. It is needed an action to solve problems by forming a road maintenance management system. This research involves two types of primary data consisting of system framework data and case study data. The first serves as a determinant of the direction of computer programming logic that can function as a blueprint for the process of storing, processing and presenting case study data, while case study data is factual field data obtained by conducting a direct survey on four city streets, namely, Joko Tingkir street, Monginsidi street, Ir. Juanda and Kyai Mojo street. All damage images, type and segment coordinates of the field are recorded using the Road maintenance and Monitoring System application (REMS). The Pavement Condition Index (PCI) value of each road section are displayed and generated by the Android REMS application will be then processed to determine the maintenance and rehabilitation great strategy.
The effect of vehicle speed on the stiffness modulus of conventional asphalt and bioasphalt
Authors: Putra R A S S , Setyawan A , Pramesti F P 
Published: July 2020

Abstract
Stiffness modulus is the ratio between stress and strain found in a layer. The value of the stiffness modulus is related to the performance of the layer in bearing the load. High modulus of stiffness makes the asphalt mixture stiff and resistant to deformation, while a decrease in the modulus of stiffness will make the pavement layer vulnerable to crack. The purpose of this study was to analysis the characteristic differences between damar asphalt mixture and conventional asphalt mixture in term of the stiffness of asphalt mixtures due to the variations in vehicle speed at the specified temperature. Speed variations are 10, 20, 30, 40, 50 and 60 kph and the temperature reference are 20 and 40°C. Data analysis is performed by comparing the stiffness values of damar asphalt mixtures and conventional asphalt mixture. The results of this study indicate that damar asphalt mixes are more resistant to changes in temperature and vehicle speed than conventional asphalt.
The Assessment of Physical Condition of Delingan Dam in 2019 as an Evaluation on Dam Maintenance
Authors: Augusto Erhar , Ikhsan Cahyono , Hadiani Rintis 
Published: July 2020

Abstract
For operating and maintaining dam activities, there is an activity serving the main function, The Assessment of Dam Condition to make it the main building well-monitored and maintained. In addition to having many advantages, dam also hides a big potential hazard. For the dam to function maximally, good maintenance and evaluation are required. Delingan Dam in Karanganyar Regency was constructed by Dutch Government since 1920. This research employed case study approach to evaluate the physical condition of dam for Delingan Dam at 2019. This research aimed to excuse the physical condition of dam, viewed from the component dam body so that component weight is assumed to be 100%. The method employed in this research was descriptive qualitative one. The result of physical assessment of Delingan Dam body obtained score of 91.63%, indicating that the physical condition of Delingan Dam in 2019 is good (condition score o >90% - 100% and damage level < 10%). To maintain physical condition of Delingan dam, it is recommended to operate and to maintain the dam maximally.
Characterization and performance of low cost amendments to immobilize lead in contaminated soil
Authors: Himawan  , Setyono P , Suntoro S , Rahardjo Sentot B 
Published: July 2020

Abstract
Immobilization is a method of remediation to reduce lead (metals) mobility by soil amendments to prevent from uptaking of plant roots and ground water contamination. This research aims to produce, characterize, and assess the efficacy of low cost solid amendments in immobilizing lead in naturally contaminated soil. Biochars [produced from chicken manure (CM), chicken bone (CB), farmyard manure (FM)] and bioslurry (BS) were characterized with FTIR, SEM, and XRF. Amended soils were incubated and sequentially extracted prior to Pb measurement with AAS. Chars were made by pyrolysis at 450°C for 90 minutes. Characterization data from FTIR showed that all amendments had similar spectra showing the existence of hydroxyl, carbonyl, C=C, C-H, C-O-C groups in the amendments. SEM images showed porous structure of the chars having pores diameter between 1.95 and 13.4 μm. XRF spectra revealed that dominant elements possessed by amendments were Ca, Na, Si (BS & FM), and P (TA & CM). The immobilization study showed that performance order from the most effective was CB > CM > FM > BS. Chicken bone biochar (CB) was the best amendment which immobilized up to 79.71% Pb and remediated soil from very high contamination-moderate risk into low contamination-low environmental risk status.
FTIR, SEM and Micro-CT Scan results of biocomposite scaffold characteristics
Authors: Dahlan K , Asra D Y , Sari Y W 
Published: July 2020

Abstract
CHA/PVA/Alginate based biocomposite scaffolds have been successfully synthesized by using freeze drying methods. Carbonated hydroxyapatite or CHA powder was firstly synthesized using calcium from chicken eggshells, phosphate acid, and sodium carbonates as starting materials. Polyvinyl alcohol (PVA) has been chosen in this experiment to reinforce the mechanical properties of the CHA/alginate scaffolds. The alginate concentrations of 3%, 4%, and 5% were used as porosifiers and CaCl2 was added as a crosslink agent. Properties of the biocomposite were characterized by fourier transform infrared (FTIR) spectrophotometer, scanning electron microscope with energy dispersive X-ray (SEM-EDX), and micro computed tomography (Micro-CT) Scanner. FTIR results of the scaffolds show spectra corresponding to functional groups of CHA, PVA, and alginate which include O-H, C-O, C = O, C = C, O-Na, P-O and P = O. The morphology of the scaffolds was evaluated by SEM and clearly shows many interconnectivity pores with the values range from 4.92 to 28.48 μm which are sufficient for osteoblast cells to grow. The EDX results show that the scaffolds contain Ca, P, C, O, Na, Cl, and S with the Ca/P ratio ranges from 1.81 to 2.67. Porosity of the scaffolds was measured by micro-CT scanner presenting the range of 25.86% to 42.74%. These scaffolds reveal good prospects for bone substitute application.
Studies on the Optical and Morphology Properties of DN-F01 Dye Hybrid Black Rice and Ag Metal as Dye-Sensitized Solar Cells (DSSC) Transparent
Authors: Diyanahesa N E-H , Supriyanto A , Ramelan A H , bin Ahmad M Khairul , Nurosyid F , Wahyuningsih S , Cari C 
Published: July 2020

Abstract
Dye-Sensitized Solar Cells (DSSC) is a set of solar cells based on photoelectrocomia, which involves the transfer of electric charge from one phase to another. This research aims to determine the optical and photoelectric properties of DN-F01 dye hybrid black rice and Ag metal as DSSC transparent. TiO2(DN-E0P3) was used which was coated on a conductive glass through a spin coating technique and as a photon absorbent was used DN-F01 dye with combination of DN-F01 dye hybrid anthocyanin dye from extracts black rice and DN-F01 dye doped Ag metal. Characterization of glass substrate that has been coated with TiO2 using FESEM and EDS where with FESEM tools it is seen that TiÜ2 on the surface of the glass is more evenly distributed and from EDS it is found that the dominant substance found on the glass surface is Ti. In the absorption of UV-VIS light characterization it is known that combination of DN-F01 dye can absorb the spectrum of light at wavelengths around 400-800 nm. When solar cells are illuminated with sunlight, solar cells can convert solar energy into electrical energy. The voltage, electric current, and highest efficiency produced by DSSC with optimizing the combination of DN-F01 dyes is DN-F01 hybrid Ag metal that is 805 mV, 1,234 μॅ and 2,145%.
Facile and rapid synthesis of tetrakis-2-amino-5-methylpyridinecopper(II) chloride pentahydrate
Authors: Syaima H , Rahardjo S B , Suryanti V 
Published: July 2020

Abstract
Pyridine and its derivatives are important compounds with tremendous applications. Pyridine derivatives, such as aminopyridine, have been widely investigated concerning their biological activity. It is reported that generally biological activities of the compound increased after complexation. Tetrakis-2-amino-5-methylpyridinecopper(II) chloride pentahydrate has been synthesized facilely in less than five minutes. It was formed by mixing CuCl2-2H2O and 2-amino-5-methylpyridine in 1:4 mole ratio in ethanol at room temperature. The complex was characterized to determine its proposed empirical formula and the structure. The forming of the complex was indicated by shifting of maximum wavelength (Amax) of UV-Vis spectra towards smaller than CuCl2-2H2O from 850 nm to 675 nm. Atomic Absorption Spectroscopy (AAS) measurement showed the content of copper to be 9.63 % corresponding to the theoretical value of copper content in Cu(2-amino-5-methylpyridine)4Cl2(H2O)x (x= 4, 5, or 6). Thermogravimetric Analysis and Differential Scanning Calorimetry (TGA-DSC) showed a mass reduction of 13.02 % which was equivalent to the evaporation of five molecules of lattice water. The cation and anion charge ratio of the complex was 2:1. This four coordinated-complex was paramagnetic with an effective magnetic moment of 1.83 BM. The proposed empirical formula of the complex was [Cu(2-amino-5-methylpyridine)4]Cl2-5H2O.
Electrosynthesis of hydroxyapatite by multiple electrode arrangement
Authors: Salsabila T , Widiyastuti W , Setyawan H 
Published: July 2020

Abstract
Hydroxyapatite (Ca10(PO4)6(OH)2) is a ceramic biomaterial which has high biocompatibility that makes it popular in the biomedical application as it can attach on human body without rejection by human immune system. Hydroxyapatite can be synthesized by various methods; one of them is electrochemical method. Synthesis of hydroxyapatite has been successfully conducted by electrochemical method using one pair of electrodes. However, the yield of hydroxyapatite produced by this pair of electrode was still low. To address those issue this research proposed synthesis of hydroxyapatite using multiple electrodes in different arrangements to improve the yield of the reaction, which were conventional and alternating arrangements. The potential value was fixed on 6 V to study the effect of electrodes arrangement on current density. Electrosynthesis of hydroxyapatite showed that multiple electrodes on alternating arrangement produced more hydroxyapatite mass and current density than the conventional arrangement. The alternating arrangement produced hydroxyapatite mass of 2.3483 g and current density of 19.32 mA/cm2, while the conventional arrangement produced 2.3157 g and 15.05 mA/cm2.
Antihypercholesterolemia activities of red ginger extract (Zingiber officinale Roxb. var rubrum) on wistar rats
Authors: Nirvana S Jovita , Widiyani T , Budiharjo A 
Published: July 2020

AbstractThe purpose of this study was to determine the phenolic content of red ginger, determine the effect on lipid profile and body weight. Total phenolic levels were measured by using UV/Vis spectrophotometry with theFolin-Ciocalteaureagent, at absorbance 760 nm wavelength. Hypercholesterolemia rat lipid profile was conductedin vivoby using a kit fromDyasis. Data was analyzed statistically withTwo Way ANOVA. Rats were divided into 5 treatment groups with different of red ginger extract (0, 200, 350, 500 mg/kg bw, and simvastatin 7.2 mg/kg bw). Before the treatment of red ginger extract or simvastatin, rats were induced a high fat diet for 28 days. The treatment of red ginger extract and simvastatin were carried out for 2 weeks. The phenolic content of red ginger extract is 5194.15 ± 264.1 μg/g. The results ofin vivotest showed that red ginger extract had a significant effect on lipid profile and body weight changes in hyperlipidemia rats at dose 200 mg/kg bw. Doses 200 mg/kg bw is not significantly different (p>0.05) to positive control group (simvastatin 7.2 mg/kg bw). Total cholesterol levels decreases 47.9%, LDL 32.7% and triglycerides 64.3% and HDL increases 25.8%.
Comparison of blasting cream anadara granosa with mytilus viridis in white rat skin(rattus novergicus)
Authors: Ariyanti Ariyanti , Masruriati Eni , Tyas Sulistyani Mardaning , Khasanah Khilya Aulia Nur 
Published: July 2020

Abstract
Collagen is the result of determination from chitosan blood shells (Anadara granosa) and green shells (Mytilus viridis). Previous research, extraction was carried out to obtain collagen. The yield of collagen produced is 2.03% with a concentration of acetic acid 0.75 M. Collagen can penetrate the main components of the dermis skin layer (the bottom of the epidermis) made by fibroblast cells. Based on the results of previous studies, the collagen produced will be made into a dosage form so that it can be better utilized. Based on the description above, researchers are interested in comparing blood clam shells and green mussel shells with a study entitled the comparison of physical test blasting creams of Anadara granosa with green shells Mytilus viridis against the skin of male white rats. Laboratory experimental research using a post test control design research design in the form of post only design which is divided into 5 treatment groups with each group consisting of 5 male white rats. The negative control group by giving a base cream and the test group by giving blasting cream Anadara granosan with Mytilus viridis concentrations of 10%, 15%, 20% and 25%. The parameter observed was skin moisture level. The results of statistical analysis using the ANOVA test. The results of this study are blasting cream Anadara granosa and Mytilus viridis can provide a moisturizing effect on rat skin. The most optimal concentration as a moisturizing effect on rat skin is a concentration of 25%
Inhibition Of Pseudomonas aeruginosa Virulence Factors Expression Regulated By Quorum Sensing System Using Ethyl Acetate Extract Of Temu Ireng (Curcuma aeruginosa)
Authors: Pangastuti A , Sari SL Arum , Nugraheni ER , Astuti RT 
Published: July 2020

Abstract

Pseudomonas aeruginosa is an opportunistic human pathogen that can cause serious problem in immunocompromised persons. Difficulty in treating P. aeruginosa infection is due to its abilities to develop multi drug resistence towards various antibiotic. Quorum sensing system is a potential target for P. aeruginosa infection because this system regulate the expression of virulence factors in this bacteria. In previous study, ethyl acetate extract of Temu Ireng rhizomes (Curcuma aeruginosa) was proved to inhibit quorum sensing in Chromobacterium violaceum. This study was aim to know the effect of C. aeruginosa extract towards expression of P. aeruginosa virulence factors which were regulated by quorum sensing, such as protease LasA activities, LasB and biofilm formation. Protease LasA activity assay was conducting using Staphylococcus aureus cell lysis activity. Protease LasB activity was measured by elastin congo red assay, and the formation of biofilm was monitored using PVC biofilm formation assay method. The result showed that ethyl acetate extract of C. aeruginosa rhizomes can decrease P. aeruginosa virulence controlled by quorum sensing, namely protease LasA, LasB, and biofilm formation by 66.92%, 37.8%, and 46% respectively.
The Effectiveness of Zeolite/Claystone/Activated Charcoal Composite in Reducing Levels of Mercury (Hg) in the Waste Resulting from the Activities of Unlicensed Gold Mining (PETI) in Sintang
Authors: Hatmoko Dwi Rizaldi , Ramelan Ari Handono , Pranoto  
Published: July 2020

Abstract
Research on zeolite/clay/activated charcoal composites as Hg heavy metal adsorbents has been carried out. Zeolite and clay were previously activated using NaOH while activated charcoal was activated using HCl. The adsorbent characterization was carried out by Fourier Transform Infrared Analyzer (FTIR), X-Ray Diffraction (XRD), and mercury levels using Atomic Absorption Spectroscopy (AAS). Hg metal adsorption experiments were carried out by varying the composition of zeolite / claystone / activated charcoal. The location of the study was in Gold Mining without Permit (PETI) in the Kapuas Sub-watershed, Ulak Jaya Village, Sintang. The results showed that zeolite / claystone / activated charcoal succeeded in reducing mercury levels in mining waste.
The assessment of claystone, quartz and coconut shell charcoal for adsorbing heavy metals ions in acid mine drainage
Authors: Mukarrom F , Pranoto  , Karsidi R , Gravitiani E , Astuti F , Maharditya W 
Published: July 2020

Abstract
This research aims to determine the assessment of claystone, quartz and coconut shell charcoal for adsorbing heavy metals ions in acid mine drainage. Claystone is activated by using NaOH 3M, quartz sand is activated by using Na2CO3, while coconut shell charcoal is activated with HCl 4M. The adsorbent characterization was done by Fourier Transform Infrared Analyzer (FTIR) and X-Ray Diffraction (XRD). The results of the characterization of claystone FTIR showed the presence of active groups of silanol (Si-OH) and aluminol (Al-OH), XRD claystone characterization showed the presence of montmorillonite, kaolinite, illite and quartz minerals. While the results of FTIR characterization of quartz sand showed the presence of active groups of silanol (Si-OH) and siloxan (Si-O-Si), XRD characterization of quartz sand showed the presence of quartz mineral content. Furthermore, coconut shell charcoal showed the presence of hydroxyl (OH) and carboxyl active groups. (COOH) which is known from FTIR analysis as well as the mineral content of cristobalite, fayalite and manganoan which are known from XRD analysis. From the results of the FTIR and XRD analysis, it can be concluded that the three adsorbents have the potential as adsorbents. So that they can be used as an acid mine water absorber.