bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of external axial magnetic field on a helium atmospheric pressure plasma jet and plasma-treated water
Authors: Tschang Chen-Yon Tobias , Bergert Roman , Mitic Slobodan , Thoma Markus 
Published: February 2020

Abstract
Potential in biomedical-related applications by atmospheric pressure plasma-treated water gradually increased recently. In order to enhance the generation of reactive species in atmospheric pressure plasma in regards to liquid treatment, this study aims to investigate the effect of external axial magnetic field on a helium atmospheric pressure plasma jet (APPJ) and plasma-irradiated water. Magnetic field strength up to 2.0 T was generated by an electromagnet in Helmholtz configuration. The dielectric barrier discharge-based APPJ is driven by 4.4 slm helium and sinusoidal 30 kHz, 10 k

V

p
p

signals. Plasma was mainly characterized by optical emission where vibrational and rotational temperature was estimated by nitrogen second positive system, and electron temperature and density by emission intensity line ratio method. Representative reactive species of nitrite, nitrate, and hydrogen peroxide concentration in the plasma-treated water were also quantified. Results of vibrational temperature and electron density showed a first drop then rise trend which partially corresponds to the reactive species in the plasma-treated water. No significant changes were found in rotational temperature, while electron temperature monotonically increased with the magnetic field.
Feasibility and limitations of quantitative SPECT for 223Ra
Authors: Gustafsson Johan , Rodeño Emilia , Mínguez Pablo 
Published: February 2020

Abstract
The aim of this paper is to investigate the feasibility and limitations of activity-concentration estimation for 223Ra using SPECT. Phantom measurements are performed using spheres (volumes 5.5 mL to 26.4 mL, concentrations 1.6 kBq mL−1 to 4.5 kBq mL−1). Furthermore, SPECT projections are simulated using the SIMIND Monte Carlo program for two geometries, one similar to the physical phantom and the other being an anthropomorphic phantom with added lesions (volumes 34 mL to 100 mL, concentrations 0.5 kBq mL−1 to 4 kBq mL−1). Medium-energy and high-energy collimators, 60 projections with 55 s per projection and a 20% energy window at 82 keV are employed. For the Monte Carlo simulated images, Poisson-distributed noise is added in ten noise realizations. Reconstruction is performed (OS-EM, 40 iterations, 6 subsets) employing compensation for attenuation, scatter, and collimator-detector response. The estimated concentrations in the anthropomorphic phantom are also corrected using recovery coefficients. Errors for the largest sphere in the physical phantom range from −25% to −34% for the medium-energy collimator and larger deviations for smaller spheres. Corresponding results for the high-energy collimator are −15% to −31%. The corresponding Monte Carlo simulations show standard deviations of a few percentage points. For the anthropomorphic phantom, before application of recovery coefficients the bias ranges from −16% to −46% (medium-energy collimator) and −10% to −28% (high-energy collimator), with standard deviations of 2% to 14% and 1% to 16%. After the application of recovery coefficients, the biases range from −3% to −35% (medium energy collimator) and from 0% to −18%. The errors decrease with increasing concentrations. Activity-concentration estimation of 223Ra with SPECT is feasible, but problems with repeatability need to be further studied.
Performance Evaluation of Power Swing Blocking in Compensated Transmission Lines
Authors: Çapar A , Ünverdi E , Basa Arsoy A 
Published: February 2020

Abstract
Traditional and modern compensation devices can increase power flow limit and enhance voltage drop in transmission lines. However, these systems can cause to malfunction of distance relays utilized to protect transmission lines. While compensation devices can effect distance relay operation, some disturbances like power swings are significant risk to ability of distance relays to distinguish faults. Power swing blocking (PSB) methods are used to discriminate faults from power swings. This study focuses on efficiency of conventional PSB methods when transmission lines are compensated with various compensation devices such as series capacitor (SC), thyristor-controlled series capacitor (TCSC) and static VAR compensator (SVC). A test system is simulated on PSCAD under various operating conditions. Conventional PSB methods (swing center voltage, reactive power change and change rate of impedance) are tested under these scenarios. The study revealed that compensation devices significantly affect the accuracy of PSB algorithms, therefore it is recommended to develop an adaptive PSB method to block power swing in the case of various operating conditions.
Performance Assessment of the RTDS/RSCAD VSC Model
Authors: Tinajero G D A , Guerrero J. M. , Segundo J. , Esparza A. 
Published: February 2020

Abstract
This document presents a performance assessment of the three-phase two-level voltage source converter (VSC) model of the real-time digital simulator RTDS/RSCAD. This evaluation is conducted through two case studies. One case is a simple two-bus power electronic-based system, and the second case is a three-bus system with a frequency-dependent transmission line model and a closed-loop controlled VSC with communication delay. The results obtained reveal that the RTDS/RSCAD VSC model presents some issues on stability, harmonic spectrum, ripple, and power quality in general, as compared with the PSCAD VSC solutions. These results also suggest the need for better power electronic components models.
Renewable Energy Generation and Impacts on E-Mobility
Authors: Sree Lakshmi G , Rubanenko O , Hunko I 
Published: February 2020

Abstract
This paper gives information about Renewable Energy Generation and its impacts on E-Mobility. By 2050, the two pillars of modern transformation are E-Mobility and Renewable Energy. This transformation requires adaptation to meet demographic and economic growth without increasing pollution and congestion. The modern world needs affordable, secure and inclusive, sustainable and integrated with customer-centric infrastructure and services. There is a great fundamental change needed in road transportation sector, which is to achieve its objective of a long term transition to a low-carbon economy. Electric Vehicles when charged with the electricity generated from Renewable Energy Sources can reduce future emissions of greenhouse gases and air pollutants from road transport. Electric Vehicles combined with renewable energy paint a different picture from the oversimplification of gas miles versus electric miles.Smart Mobility and Smart Grid technologies make people live more sustainable and efficiently.
The research to reduce the transient grounding resistance of communication protection system with resistance matching method
Authors: Wan Zheng , Tian Dongliang , Li Lei , Chen Jianping , Wang Wangrong , Qu Xinbo , Hu Bin 
Published: February 2020

Abstract
In this paper, we study reducing the transient grounding resistance (TGR) of communication protection system with resistance matching method. We set single or double matching layers surround the grounding rod and change their sizes and conductivity to get the laws about reducing the TGR peak and stable value. The finite-difference time-domain (FDTD) method is adopted for calculating. For the single matching layer, both of the peak and stable value of the vertical grounding rod TGR reduce, compared with normal case, as matching layer exists when the conductivity of matching layer is larger than that of ground. For the double matching layers, the TGR value will reduce even more than single matching layer case when the conductivity of outer matching layer is larger than that of ground.
Load restoration strategy considering the recovery state of power plants in system restoration stage
Authors: Wu Shengjun , Feng Xinzhen , Zhou Qian , Cui Hongfen , Li Hongyi 
Published: February 2020

Abstract
Load restoration is important for reducing outage time and loss of smart grid after a blackout. Load recovery strategy of network reconfiguration is maximizing load amount during system restoration without considering the startup characteristic of thermal plants, which may result in the time-delay of hot-start generators and decrease the efficiency of power system restoration. In order to increase the restoration efficient of network reconfiguration stage, this paper proposes a load restoration strategy considering the recovery state of power plants based on logical preference description language (LPDL). Firstly, the load selection constraint determined by the recovery state of power plants in each time step is formulated by LPDL. Then, a non-linear optimization model for load restoration during network reconfiguration is established with the load selection constraint. Artificial Bee Colony algorithm (ABC) is employed to obtain the optimal load restoration scheme. Finally, the New England power system is employed to demonstrate the validation of the proposed method.
Comparison of optimal reactive power flow model in the polar form and the mixed polar form
Authors: Wang Aifeng , Wei Hua , Huang Guohui 
Published: February 2020

Abstract
This paper establishes the optimal reactive power flow (ORPF) model in the polar form and the mixed polar form. The analysis shows that the ORPF model in the polar form not only has less calculation amount of equality constraints than the ORPF model in the mixed polar form, but also has more concise expressions, which makes it easier to understand, analyze, and remember. The test results of IEEE30, 118, 300, 1047 bus systems show that the ORPF model in the polar form obtains the same optimal value and iteration number as the ORPF model in the mixed polar form, but its calculation time is shorter, and the solving efficiency is higher. With the increasing scale of modern power system, the calculation time of ORPF problem rises, so it is necessary to improve its solving efficiency. The ORPF model in the polar form is more suitable for power system analysis and calculation because of its high solving efficiency.
Unit commitment of wind integrated power system considering optimal scheduling of reserve capacity
Authors: Wenxue Liu , Liang Wang , Bing Zhang , Changhui Ma , Zhengtang Liang 
Published: February 2020

Abstract
There are multiple uncertainties in the power system with wind farms, such as wind power output, load and forced outage of units, which lead to consider the spinning reserve capacity in unit commitment, which undoubtedly increases the difficulty of problem solving. In order to solve this problem, the fuzzy parameters of wind power output and load are obtained by using the error’s fuzzy characteristics, and the mathematical model of generating unit combination is established to optimize the generator output and spinning reserve simultaneously by using the chance constraint, and the model is solved by using intelligent algorithm. The model fully analyses the cost difference of different units providing spinning reserve and the economic benefit of spinning reserve, aiming at minimizing the difference between the cost of generating reserve and the economic benefit of reserve, so as to maximize the overall economic benefit of the system. The feasibility and validity of the proposed model are verified by a 10-unit system with wind farms. The analysis shows that the model can reasonably consider reserve decision-making in unit commitment to deal with uncertainties in power system.
Day-ahead optimal scheduling of integrated energy system with electric heat pump
Authors: Zhang Nianchu , Wang Qi , Ni Ming , Li Manli , Zhang Zheng 
Published: February 2020

Abstract
The regional integrated energy system is an effective way to realize energy cascade utilization and improve the flexibility and economy of the load side operation. Combine cooling heating and power (CCHP) system is a typical form of integrated energy systems. However, due to heat-load-based operation mode, the peak modulation capacity of CCHP units and the accommodation of renewable energy are limited. This paper explores methods of increasing the flexibility and economy of the system. An optimal scheduling model is proposed for integrated energy systems containing an electric heat pump, considering heating network characteristics. Simulation results show that the electric heat pump can help the system realize heat-and-power decoupling, improve the flexibility of the system and reduce the operating cost of the system.
The differences of depth on the species composition of spiny lobster puerulus on south Pacitan Regency East Java
Authors: Saputra W A , Pambudi K A , Setyanto A , Tumulyadi A 
Published: February 2020

Abstract
Lobster resources are one of renewable resources but if catches are increasing without any control will cause a depleted resource. Catching lobsters is not only in the adult phase but all phases are captured. The purpose of this study to determine the composition of lobster seeds between depths that have a high value of lobster seeds collection so that it can be used as a reference for lobster protection in nature. This research was conducted in January – February 2019, located in Pacitan district with the operational area in Wawaran beach waters. The statistical method used in this research was Chi-Square analysis and Kruskall-Wallis. Based on the results of the operation atracror puerulus lobster in two different depths (14 and 20 meters) in Wawaran beach waters found that there are four species puerulus, i.e., Panulirus homarus, Panulirus penicillatus, Panulirus ornatus and Panulirus versicolor. Its found that different depths did not affect the composition of the collected puerulus species. Then the Kruskal-Wallis test at 14 meters and 20 meters depth found a significant difference in the value of each type of lobster. The type of puerulus from Panulirus homarus has the dominant results compared than the other three species.
Nursery method of Jatimbulan Tilapia (Oreochromis niloticus) in Pasuruan, East Java
Authors: Anggraeni I , Sari P D W 
Published: February 2020

Abstract
Jatimbulan Tilapia (Oreochromis niloticus) is the third generation of the crossover six parental strain of tilapia. The nursery method for Jatimbulan Tilapia (Oreochromis niloticus) fry is carried out in soil and concrete-walled pond, as well as seeds having an average length of 2.3 cm and an average weight of 0.181 grams. The treatment used is feeding pellets by feeding frequency two times a day with a 30% feeding rate of the biomass. Treatment significantly generating good growth and survival; SGR (1.12%) and SR (97%). Water quality in the maintenance media contained in a reasonable range for raising Jatimbulan Tilapia.
Identification and prevalence infection of helminth in the gastrointestinal tract swamp eel (Synbranchus bengalensis) which marketed in Surabaya, East Java
Authors: Subekti S , Kurniawan M R , Sudjarwo S A 
Published: February 2020

Abstract
Disease is one of the obstacles in cultivation are caused by an imbalance of the interaction between environmental factors, host, and disease agents. This study aimed to determine the prevalence of helminth species and endoparasites which infect the gastrointestinal tract swamp eel (Synbranchus bengalensis) is marketed in the city of Surabaya, East Java. Samples was taken 75 swamp eel of (10%) from total population 750. The research method used is a survey method. The collected data were analyzed descriptively. Based on the results of checks are performed on 75 samples of eel swamp tail result 22 positive swamp eels infected with helminth endoparasit Pingus sinensis and Eustrongylides Ignotus. Based on these results the prevalence values obtained for an average of 29.3%. In this study, found a single L3 Pingus sinensis infection with a prevalence rate of 4% and a single infection L4 Eustrongylides Ignotus infection rate of 8%. While the prevalence of infection mixture L3 Pingus sinensis and L4 Eustrongylides Ignotus by 16%. These results indicate that the helminth Pingus sinensis and Eustrongylides Ignotus often infects the eel.
The effect of hydrochloric acid concentration and temperature demineralization on characteristics of chitin from penshell (Atrina pectinata)
Authors: Nugroho I L , Masithah E D , Pursetyo K T 
Published: February 2020

Abstract
This study aims to determine the effect of HCl concentration and temperature affect chitin characteristics as the result of demineralization process from penshells. This study uses Completely Randomized Design (CRD) factorial consisting. The method based on two steps, there are demineralization and deproteination. This study aims to determine the effect of HCl concentration and temperature on chitin characteristics as the result of demineralization process for penshells. This study used Completely Randomized Design (CRD) with two factors, including HCl concentration (2N, 4N, and 6N) and temperature (33°C and 60°C) which consists six combination treatments and three replications. Data was analyzed by analysis of variance (ANOVA) and followed by Duncan’s Multiple Range Test to determine differences between treatments. The results showed that interaction of HCl concentration and temperature has significant effect (p⌄0.05) to ash content of chitin. The use concentration of 6N and 33°C produces low ash content. Characteristics chitin resulted from the treatment of 6N and 33°C produces ash content 25.33%±6.82, moisture content 3.67%±1.10, yield 0.72%±0.12 and protein content 5.86 %.
Difference in the Level of p-Selectin Blood Edge between Uni-Valvular and Multivalvular in Rheumatic Heart Disease
Authors: Filianovika F , Lefi A , Romdoni R , Ramadhan M F 
Published: February 2020

Abstract
Rheumatic heart disease remains a major medical problem of children and young adults. Rheumatic heart disease is sequelae of acute rheumatic fever, a bacterial infection Group A beta Hemolitiycus streptococci (GAS) in the pharynx. It is based on genetic predisposition and an autoimmune process causing defect of heart valves, hemodynamic changes, endothelial damage. Further, it is usually illustrated by elevated levels of P selectin. This study was conducted to prove the difference between peripheral P selectin level in multivalve and univalve (mitral stenosis) in rheumatic heart disease. This cross sectional study involving 37 RHD patients consists of 18 univalve (mitral stenosis), 19 multivalve, and 22 healthy controls. P selectin levels were collected through peripheral vein and echocardiography was performed. Peripheral P selectin was significantly higher in univalve and multivalve rheumatic heart disease than normal. Peripheral P selectin in multivalve group was higher than univalve group (2,384ng/mL vs 2,028ng/mL; ρ < 0.05). There was significant difference of peripheral P selectin between multivalve and univalve (mitral stenosis). P selectin potentially has an important role as an indicator of inflammation and progression of valve damage in mitral stenosis, rheumatic heart disease.
Association between White Blood Cell to Mean Platelet Volume Ratio (WMR) with Troponin for Refractory Angina Prediction in NSTE-ACS patients
Authors: Hermawati I E , Assegaf M Y 
Published: February 2020

Abstract
Hematological parameters provide independent information as well as troponin in non-ST-Elevation-Acute-Coronary-Syndrome (NSTE-ACS) patient. Refractory angina in NSTE-ACS patients significantly transforms this optimal management due to risk enhancement. This study aims to prove the association of white blood cell (WBC) to mean platelet volume ratio (WMR) with troponin and authenticate the best parameter for refractory angina prediction in NSTE-ACS patients. This observational study was conducted in ICCU Dr. Soetomo General Hospital, Surabaya. There were 49 NSTE-ACS patients recruited as the study subject. Complete Blood Count (CBC), High Sensitivity Cardiac Troponin I (hs-cTnI) and CKMB examinations were conducted at the time of admission. We observed angina symptom for three months. The mean age of the patients was 60.8±8.67 years, and 75.5% of them were male. Elevated hs-cTnI level was found in 83.7% of study subjects. WMR significantly correlated with hs-cTnI (r=0.434 p=0.002). Refractory angina was found in 14.3% of study subjects. There was a positive moderate correlation of WMR and refractory angina (r=0.534 p=0.000), a positive moderate significant correlation of hs-cTnI and refractory angina (r=0.470 p=0.001). No significant correlation of other parameters. This study proved that WMR was an independent hematological predictor for refractory angina event in NSTE-ACS patients with higher significance level than hs-cTnI.
Correlation between Left Ventricular Function with Functional Capacity in Post Infarct Myocard Patients with Heart Failure
Authors: Sudirman I , Pikir B S , Rinjani L G P 
Published: February 2020

Abstract
In myocardial infarct patient with heart failure, left ventricular (LV) function evaluation after myocardial infarction provides prognostic information. However, the relationship between exercise capacity and LV function has not been fully explored. This study aims to analyze the correlation of LV function with functional capacity in acute myocardial infarct patient with heart failure. From 33 patients who fulfilled the inclusion and exclusion criteria, treadmill and echocardiography were examined (LVEDd, myocardial performance index (MPI), E/E’ diastolic function, LV Stiffness). The results are then statistically analyzed using SPSS. The mean LV ejection fraction is 44.27 ± 9.0% by Teich, and 40.55 ± 8.3% by Biplane. The value of the global MPI function is (0.60-0.90). The average E/A ratio is 1.0 ± 0.5, deceleration time (DT) is > 220m / sec, and E / E ratio is 11.46 ± 5.82ms. The functional capacity value is 3.4 (1.1-8.4) METS. There is a significant positive correlation of LV systolic function and functional capacity and significant negative correlation between MPI and functional capacity in myocardial infarct patients with heart failure. Furthermore, there is a non-significant correlation between diastolic function and functional capacity.
Levofloxacin and Drug-Induced Long QT Syndrome (diLQTS): The Incidence and How to Prevent It
Authors: Catelya L G , Tjahjono C T , Hanafi A 
Published: February 2020

Abstract
Levofloxacin is a fluoroquinolone antibiotic which is used widely in treating various infections. Despite this benefit, Levofloxacin has a cardiac side effect called drug-induced long QT syndrome (diLQTS), which is associated with Torsades de Pointes (TdP). In this study, our objective was to analyze the incidence of diLQTS associated with Levofloxacin use in Ahmad Dahlan Hospital Kediri. This study included patients who were admitted to Ahmad Dahlan Hospital Kediri from March-May 2019 and received Levofloxacin 500mg therapy once daily. An electrocardiogram was performed before and after initiation of therapy. Prolonged QTc was defined by heart rate-corrected QT ≥450ms for male and ≥470ms for female, calculated using Bazett formula; or if the prolongation of QT interval is >60ms from baseline. Acquired data were analyzed using Paired T-test. Of all 24 patients who received Levofloxacin, six patients developed long QTc. Two of which had >60ms difference from base ECG (p-value >0.05). No symptom of TdP was reported. The incidence of diLQTS associated with Levofloxacin use was 25%. Risk factor stratification and ECG monitoring should be done from the beginning of the therapy.