bluuebunny/crossref_metadata_2025_split huggingface dataset:
A high voltage electrostatic filter for particulate matter PM2.5capture applied in motor vehicle exhaust system
Authors: Wardoyo Arinto Y.P. , Dharmawan Hari A. , Nurhuda M. , Budianto Arif 
Published: June 2020

AbstractIncreasingly strict air pollution regulations along with global warming issue have peeked the interest in cleaner emission emitted by motor vehicle. In line with this, this study was aimed to develop a particulate filtering system based on an electrostatic principle for particulate matter with the diameter less than 2.5 μm, as known as a fine particle, and to test the performance of the filter. The filter consists of aluminum anodes and cathodes as the electrostatic electrodes. These electrodes were placed into the filter frame and installed on a motor vehicle muffler. The test was conducted to estimate the filter performance by measuring particle concentrations before and after using the filters. The filter was tested under four different electrostatic voltages:V1100 Volt,V2200 Volt,V3300 Volt, andV4400 Volt. The results show that the filter can reduce fine particle concentrations with the best efficiency of 50%, 60%, 62%, and 68%, respectively forV1,V2,V3, andV4. Filter performance was directly influenced by the applied voltage and the time of the test.
Beat frequency measurement of the stabilized He-Ne laser 633 nm calibration in SNSU-BSN
Authors: Hapiddin Asep , Yulita Ika P. , Boynawan A.M. , Ratnaningsih  , Agmal Swivano , Novyanto Okasatria 
Published: June 2020

Abstract
In the metrology area, typical stabilized lasers are used as length primary standard. KIM-1, i.e. the iodine stabilized He-Ne laser in National Measurement Standards Laboratory-National Standardization Agency of Indonesia (SNSU-BSN) has been traceable to SI through CCL-K11 inter-laboratory comparison. The result was suitable for KIM-1 to be used as the length primary standard in SNSU-BSN. Beat frequency measurement has been applied in the optical frequency and wavelength calibration system for stabilized He-Ne laser 633 nm using KIM-1 as a reference standard. In the calibration replica, a dual-frequency mode (Agilent 5519B) took a role as DUT laser, which emits a pair of beams with a central wavelength of 632.991 354 nm in the vacuum with frequency difference 3.4 to 4.0 MHz and ±0.02 ppm stability for a typical lifetime. As a measurement result, the beat frequencies of the 1st and 2nd polarized beam of Agilent 5519B against KIM-1 are (121.33±0.06) MHz and (118.59±0.06) MHz.
Dose evaluation of organs at risk during treatment using gamma knife stereotactic radiosurgery (GKSRS): phantom study
Authors: Pontoh P A , Firmansyah O A , Setiadi A R , Tandian D , Pawiro S A 
Published: June 2020

Abstract
Gamma Knife Stereotactic Radiosurgery (GKSRS) treatment requires the high accuracy of delivering single high dose without negative impact on the surrounding tissue. During radiosurgery treatments using GKSRS, the surrounding tissue will receive high scatter radiation because the single dose treatment will employed long irradiation time. Therefore, radiation doses in critical organs of patients during GKSRS treatment is important to be evaluated. In this study, we investigated the radiation dose to the lens, thyroid, breast, uterine fundus, ovaries and testes during treatment using Leksell Gamma Knife Perfexion (LGK; Elekta AB, Stockholm, Sweden). The dose was simulated using the variation of tumour target from 5 to 20 cc. The measurement were performed using variation of collimator size of 4 mm, 8 mm, 16 mm and employed thermoluminescent dosimeters (TLDs) to be placed at the surface of Rando anthropomorphic phantom. TLDs reader Harshaw model 3500 were employed to evaluate the measurement result. The result of this study explains that the dose of organs at risk decrease linearly depend on the distance of the target, target volume and the size of collimator.
Analysis of energy-peaks characteristic in NaI(Tl) spectrometer for radionuclide identification in environmental radiation monitoring device
Authors: Kusuma Gina , Yuniarsari Lely , Santoso Budi , Prajitno Prawito , Kusuma Wijaya Sastra , Soekirno Santoso , Putu Susila I 
Published: June 2020

Abstract
The development of nuclear facilities has been emerging rapidly in this century, it’s causing the development of technology which concerns the quality of the environment is a must. Because this condition is related to the polluted nuclear radiation in the environment, especially in urban, and nuclear facilities. This causes an environmental radiation monitoring device is needed to determine abnormalities. Currently, the environmental radiation monitoring devices in the station only could monitors gross gamma radiation. The device cannot distinguish whether the increase in dose rate is due to abnormal events, or due to natural radiation. Therefore, we need a device that can have the ability of spectroscopy, thus it can distinguish the radionuclide source that causes an increase in the dose rate like NaI(Tl) gamma spectrometer. The device has been configured using a NaI(Tl) detector with a peak characteristic observation method with various conditions of acquisition time and dose rate. This was tested in laboratories using Cs-137 as a sample. Tests have been done by varying the value of time and dose rate when measure. Time used varies, 1 minute, 5 minutes, 10 minutes, 30 minutes, 60 minutes, 90 minutes and 120 minutes with a varying dose rate of 0.1479, 0.1115, 0.0956 and 0.0802 |aSv/h. Data has been analyzed using the high summing ratio method to be able to distinguish measurement values using sample and background measurements. The result shows that the detector has stable when measuring for 30 minutes with FWHM value 60, and the dose rate is not less than 0.0802 |aSv/h, and it was able to distinguish background and source value from 1 -minute acquisition using a high summing ratio method.
A systematic literature reviews of multichannel analyzer based on FPGA for gamma spectroscopy
Authors: Tris Susanto Andeka , Prajitno Prawito , Kusuma Wijaya Sastra , Soekirno Santoso , Putu Susila I 
Published: June 2020

Abstract
Environmental radiation monitoring based gamma spectroscopy require a multichannel analyzer (MCA) which functions to record and analyze nuclear radiation spectrum data. There are currently many studies related to MCA based on field programmable gate array (FPGA). But, the scope of these published research is complex and fragmented. This systematic literature review (SLR) main objective to analyze research trends and emerging themes research of MCA based on FPGA for gamma spectroscopy that was developed during last 10 years. This review was conducted by selecting papers from leading journals in scientific databases namely ScienceDirect, IEEE Xplore and Scopus. For papers selection process, specific keyword strings used for each database and paper selecting using inclusion and exclusion criterion. Selection of papers resulted in 38 selected papers. During 10 last 10 years, This reseach become hot of topic research especially in Asia. This SLR proves that performance of MCA based FPGA is reliable and compatible with various of detector types. This MCA has been used for spectroscopy applications such as monitoring radiation, diagnostic medicine, industrial imaging and security screening. The implications of this study can used as reference for future research of development MCA based FPGA for enviromental radiation monitoring based gamma spectroscopy.
A measurement low magnetic field at copper plate electromagnet
Authors: Wardoyo S , Djamal M , Budiman M 
Published: June 2020

Abstract
Discovery of electromagnets has had a great influence on the development of science and technology, which due to the nature of the magnetism that can be arranged so that it can provide practical benefits including electric motors, relays, power generators, and automatic door switches. In this research, an electromagnet the form of copper plate with hole in the middle for iron core. Each plate has an insulator that separates between each plate which is arranged in threads to form a helical coil of copper plate. Value obatained from design electromagnets using copper is 0 to 8 mT, with measurement using Gaussmeter as a reference in the development of sensors using giant magnetoresistance. The implications and application from this research is portable and concise high field in the form of copper plate models. In the future it potential apllication on biomedical and engineering.
Verification of dose distribution on the gamma knife perfexion radiosurgery using gafchromic EBT3 film: RANDO phantom study
Authors: Pranditayana I N , Setiadi A R. , Ramadhan M M , Tandian D , Pawiro S A. 
Published: June 2020

Abstract
Leksell gamma knife (LGK) is an advanced modality of radiation therapy sourced Co-60 radioactive for treating patient with intracranial lesion. Small field techniques with highly integrated radiation delivering to patients in single session must be calculated accurately and verified carefully. This study illustrates a procedure to verify the accuracy of dose distribution associated with Leksell Gamma Plan (LGP) using RANDO phantom and gafchromic EBT3 film dosimetry. First, we assessed the profile dose on LGK standard phantom with collimators size 4, 8 and 16 mm and compared the results with the profile dose based on RANDO to obtained Full Width Half Maximum (FWHM) and beam-symmetry. Absorbed-dose distributions on RANDO with various combinations of lesion volume, collimator size, location and number of shots assessed by EBT3 film using LGK Perfexion. Scanned images of the measured films were processed following standard EBT3 film-handling procedures. Dose distribution calculation were performed using ImageJ software and MATLAB in-house software. The study shows different FHWM and beam symmetry of collimator size of 16 mm on standard phantom between LGP and measurement is 1.83 % and 1.58 % respectively whereas the discrepancy in RANDO phantom is 2.15 %, and 1.64 % respectively. Verification of max dose shows the smallest discrepancy on collimator size 16 single shot is 1.9 % on 7.61 cc superior lesion volume, where 12.12 Gy obtained by measurement and 12.36 Gy from LGP. In conclusion, collimator size 16 mm have a highest accuracy of FWHM and beam-symmetry value. However, on smaller lesion volume, collimator 16 mm with single shot give higher deviation dose value.
EEG-EMG based bio-robotics elbow orthotics control
Authors: Adila Ferdiansyah Faizal , Prajitno Prawito , Kusuma Wijaya Sastra 
Published: June 2020

Abstract
Brain-computer interface (BCI) or also its advancement, hybrid brain-computer interface (hBCI), is a technology that is vastly developed. This technology has been used in many fields. BCI is a system that directly changes a human’s mind into data that can be extracted to information that can be meaningful to people. The development of this technology has applications as a rehabilitation aid for someone suffering from an inability to move his limbs, such as the arms. Through this research, it is hoped to be able to design an orthosis control system as a rehabilitation device by using a classification method with EEG and EMG signals, so that subjects who use this tool can carry out rehabilitation in upper arm movements especially in the elbow joint. The system utilized Raspberry Pi 3 B+ as the computer and ADS1299EEG-FE as analog front end for EEG and EMG. EEG frequency band power and EMG Vrms feature are extracted using Wavelet Transform and the model used for movement classification is Support Vector Machine. The results of the movement classification using both signals, using delta alpha ratio and root mean square features, obtained training accuracy for three movements namely relax, flexion, and extension of 90.3% and for testing accuracy of 85.2%. The combination of EEG and EMG signals are considered a promising approach for developing rehabilitation device of right arm limb.
A comparison of joint reversible data hiding methods in encrypted remote sensing satellite images
Authors: Syahputra Nasution Ali , Wibisono Gunawan 
Published: June 2020

Abstract
The distribution of remote sensing satellite data from the National Remote Sensing Data Bank (BDPJN) of the National Institute of Aeronautics and Space (LAPAN) to users via the internet requires security so that it is not used illegally by unauthorized parties. Encryption and reversible data hiding are two effective and popular privacy protection and confidential communication solutions. With encryption, data is randomized so it can’t be read. Whereas with reversible data hiding, the receiver can extract hidden data and restore the original image without distortion. In this paper, some remote sensing satellite images are used as input in the simulation that is analyzed and compared based on the three methods of joint reversible data hiding in encrypted images, i.e. Zhang’s work, Hong’s work, and Fatema’s work. The experimental results show that Hong’s et al. method reveals the best performance of the three methods. For example, when the block size is 8x8, the bit error rate (BER) of the SPOT-6 test image of Hong’s et al. method was 12.06%, which is slightly lower than the 14.01% Zhang’s method and 11.89% Fatema’s et al. method. Likewise, the quality of remote sensing satellite image (image_spot6) recovery represented by the peak signal to noise ratio (PSNR) of Hong’s et al. method is 49.96 dB, which is quite higher than the 48.26 dB of Zhang’s method and 48.98 dB of Fatema’s et al. method.
Simple I-V acquisition module with high side current sensing principle for real time photovoltaic measurement
Authors: Wiyadi Eri , Wati Agustina , Hamzah Yanuar , Umar Lazuardi 
Published: June 2020

Abstract
This work presents a data acquisiti on module for measurement of current voltage (I-V) characteristic of photovoltaic module based on INA219 sensor Adafruit integrated with the Atmega328 Microcontroller. The module can be used to measure the photovoltaic DC current precisely, which is controlled using a developed software interface as a data logger display. The sensor works based on the principle of high side currents sensing consists of sense and load resistor to accommodate four sensors of 3 Amps in the maximum voltage range up to 26V. The measurement result in real-time is depicted in graphical form using visual studio software. Calibration and linearity tests result an error of of 0.76% and 0.572% for currents and voltages respectively. The result of linearity test shows a value of R = 0.98 for current and voltage of PV module compare to the calibrator.
Examination system of chicken meat quality based on hyperspectral imaging
Authors: Latifa Noferita Kaswati Engrid , Harmoko Saputro Adhi , Imawan Cuk 
Published: June 2020

Abstract
The freshness of the chicken meat will be degraded due to microbiological and chemical processes and will affect the quality of the chicken’s meat. Measurements of freshness were done by a laboratory test that usually destructively and takes a long time. In this study, a VNIR imaging system was built with a wavelength range of 400-1000 nm to determine the freshness of broiler chicken meat. The freshness of the chicken meat was analyzed by using the organoleptic and pH measurement approach. Classification using Random Forest (RF) modeling has been developed to predict the freshness of chicken meat. The freshness of chicken meat was evaluated by using the correction value of 85.5%. The Partial Least Square Regression (PLSR) algorithm was successfully used to determine the pH. The pH measurement system for fresh chicken meat was evaluated using a correlation coefficient of 0.80 and RMSE 0.16. Meanwhile, for the spoiled chicken meat, pH was measured using a correlation coefficient of 0.84 and RMSE of 0.18. Both classification and regression methods indicate that this measurement system is adequate for predicting the quality of chicken meat.
Changes of mangrove area in Pangpang Bay, Banyuwangi 2014-2018 using Landsat-8 imagery
Authors: Cintya Pradipta Hapsari Khansa , Ayu Permatasari Dinda 
Published: June 2020

Abstract
The existence of mangrove has important role for environment and living creatures. Mangrove is a habitat for various types of animals and can produce various environmental services, such as stabilizing coastlines. With many important roles of mangrove, monitoring the changes of mangrove area become important to give us the information. One of the effective ways in monitoring mangrove is using remote sensing system, in this case, Landsat 8. This research aims to identify the changes of mangrove area in Pangpang Bay conservation area during 2014-2018 by using Landsat 8 imagery. Composite of 564 RGB on Landsat 8 imagery was used for identification of mangrove and the classification method used in this research was maximum likelihood classification (MLC). The classification result indicated 3 land cover classes: water bodies, land and mangrove. The result of 564 RGB composite on Landsat 8 imagery showed that there was an increase of 283.04 ha in total mangrove area from 2014 to 2018. Pangpang Bay experiencing expansion of mangrove area from 2014 to 2018 because that place is a mangrove conservation area, so that the sustainability of mangrove is maintained.
Association of Arterial Stiffness With Kidney Function Among Adults Without Chronic Kidney Disease
Authors: Itano Seiji , Yano Yuichiro , Nagasu Hajime , Tomiyama Hirofumi , Kanegae Hiroshi , Makino Hirofumi , Higashi Yukihito , Kobayashi Yusuke , Sogawa Yuji , Satoh Minoru , Suzuki Kenji , Townsend Raymond R , Budoff Matthew , Bakris George , Kashihara Naoki 
Published: June 2020

Abstract

BACKGROUND
Our aims were to assess whether arterial stiffness is associated with a higher risk for kidney dysfunction among persons without chronic kidney disease (CKD).

METHODS
We analyzed data from the national health checkup system in Japan; for our analyses, we selected records of individuals who completed assessments of cardio-ankle vascular index (CAVI) and kidney function from 2005 to 2016. We excluded participants who had CKD at baseline, defined as the presence of proteinuria or estimated glomerular filtration rate (eGFR) &lt;60 ml/min/1.73 m2. We compared 2 groups of CAVI measurements—the highest quartile (≧8.1) and the combined lower 3 quartiles (&lt;8.1). We used Cox proportional hazards models to assess associations between these 2 groups and subsequent CKD events, proteinuria, eGFR &lt;60 ml/min/1.73 m2, and rapid eGFR decline (greater than or equal to −3 ml/min/1.73 m2 per year).

RESULTS
The mean age of the 24,297 included participants was 46.2 years, and 60% were female. Over a mean follow-up of 3.1 years, 1,435 CKD events occurred. In a multivariable analysis, the hazard ratios with 95% confidence intervals (CIs) for the highest vs. combined lower quartiles of CAVI measurements were 1.3 (1.1, 1.5) for CKD events, 1.3 (0.96, 1.62) for proteinuria, 1.4 (1.1, 1.7) for eGFR &lt;60 ml/min/1.73 m2, and the odds ratio with 95% CI was 1.3 (1.1, 1.4) for rapid eGFR decline.

CONCLUSIONS
Persons with CAVI measurements ≧8.1 had a higher risk for CKD events compared with their counterparts with CAVI measurements &lt;8.1. Greater arterial stiffness among adults without CKD may be associated with kidney dysfunction.
An algorithm for retrieval tools in foreign body ingestion and food impaction in children
Authors: Ergun Ergun , Ates Ufuk , Gollu Gulnur , Bahadir Kutay , Yagmurlu Aydin , Cakmak Murat , Aktug Tanju , Dindar Huseyin , Bingol-Kologlu Meltem 
Published: June 2020

Summary
The aim of this study is to review the experience on managing foreign body ingestion in children with special emphasis on the endoscopic techniques and specific retrieval devices used for foreign body (FB) extraction. The charts of 341 children were reviewed retrospectively. Demographic data, ingested material, removal technique and tool, level of FB, complications, and outcomes were recorded. A total of 364 FBs were removed from 341 children. Among these, 56.5% (n: 206) were entrapped in esophagus, 39% (n: 142) were in stomach, and 4.5% (n: 16) in duodenum and intestine. The most frequently ingested items were coin (42.5%), button batteries (20.6%), and safety pins (12%). Optical forceps (37.9%) were the most commonly used tool and they were used during retrieval of esophageal FB by rigid endoscopy. Retrieval net (20.7%) was the second most common tool and the most common one during flexible endoscopy. Depending on our experience, we strongly advocate rigid endoscopy for esophageal FBs and food impaction in children because it allows both to use optical forceps with a strong grasping ability for blunt FBs and to position sharp and pointed objects inside the rigid endoscope. We recommend retrieval net as the first tool for the extraction of blunt objects and rat tooth retrieval forceps is the best tool for sharp and pointed FBs in stomach.
Molecular mechanism of the response of Zygosaccharomyces rouxii to D-fructose stress by the glutathione metabolism pathway
Authors: Liu Hong , Li Xin , Deng Jingzhi , Dai Lingyan , Liu Wei , Pan Bailing , Wang Chengtao , Zhang Dongjie , Li Zhijiang 
Published: June 2020

ABSTRACT
Zygosaccharomyces rouxii produces high levels of 4-hydroxy-2,5-dimethyl-3(2H)-furanone in YPD medium supplemented with 120 g/L D-fructose and 180 g/L NaCl after 5  d. D-fructose has a stress effect on Z. rouxii, and GSH-Px is a main enzyme involved in the defense of Z. rouxii against oxygen stress according to our previous report. In order to further explore the molecular mechanism of the glutathione metabolism pathway in Z. rouxii in response to D-fructose stress, changes in the expression of genes and proteins involved in the synthesis of glutathione precursor amino acids and enzymes were observed. In addition, changes in the intermediates related to glutathione synthesis in Z. rouxii were reported. The results indicated that some gene-encoding enzymes involved in the glutamate, cysteine and glycine biosynthesis pathways and key genes involved in glutathione synthesis were upregulated. The expression levels of other genes, except SHMT, were consistent with the qRT-PCR results. The contents of γ-glutamylcysteine and glutathione amide in the D-fructose group were higher than those in the control group. In the D-fructose stress groups, the metabolic flux towards glutathione synthesis was increased. These results might provide more in-depth and detailed theoretical support for the oxidative stress defense mechanism of Z. rouxii under D-fructose stress.
Transcriptomic analysis reveals MAPK signaling pathways affect the autolysis in baker's yeast
Authors: Li Xiao , Ye Han , Xu Chao-Qun , Shen Xiang-ling , Zhang Xiao-Long , Huang Cong , Cheng Ben , Tan Ya-Li , Xiao Ze-Tao , Pei Yu-Peng , Zou Kun 
Published: June 2020

Abstract
Yeast autolysis refers to the process in which cells degrade and release intracellular contents under specific conditions by endogenous enzymes such as proteases, nucleases and lipid enzymes. Protein-rich baker's yeast is widely used to produce yeast extract in food industry, however, the molecular mechanism related to baker's yeast autolysis is still unclear. In this study, RNA-seq technology and biochemical analysis were performed to analyze the autolysis processes in baker's yeast. The differentially expressed genes (DEGs), 27 autolysis-related euKaryotic Ortholog Groups (KOG) and three types of autolysis-induced Gene Ontology (GO) were identified and analyzed in detail. A total of 143 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways under autolysis were also assigned. Interestingly, the DEGs were significantly enriched in the mitogen-activated protein kinase (MAPK) signaling pathways and metabolic pathways, and key genes MID2, MTL1, SLT2, PTP2, HKR1 and GPD1 may play important roles in autolysis. Further quantitative PCR was performed to verify the expression pattern in baker's yeast autolysis. Together, all these results indicated that MAPK pathways might play an essential role during autolysis process through inhibiting the metabolism and disrupting cell wall in baker's yeast. This result may provide important clues for the in-depth interpretation of the yeast autolysis mechanism.