bluuebunny/crossref_metadata_2025_split huggingface dataset:
Body surface potential mapping time series recognition using convolutional and recurrent neural networks
Authors: Rymarczyk T , Wójcik D , Maciura Ł , Rosa W , Bartosik M 
Published: December 2022

Abstract
This article shows recognition of biomedical time series from Body Surface Potential Mapping by means of different convolutional and recurrent neural networks models. The various kinds of neural networks models were examined and compared: model with 1D convolutional layer, model with Long - Short Term Memory layer and model with Gated Recurrent Unit layer.
Optimized fuzzy controller in precise circuits monitoring the current from resistance shunt in high-voltage DC circuits
Authors: Dominikowski B 
Published: December 2022

Abstract
Due to the low value of the resistance shunt, the measurement of low value current is a metrological problem. Properly selected processing constant and measurement system allows to minimize the metrological error. The proposed system consists of two identical non-inductive resistance shunts (125 µΩ) for measurement current. One of them is used to estimate the gain, the other is to measure the current. The amplification of the signal from the measuring shunt is controlled digitally by the fuzzy controller algorithm. The role of the intelligent system is to select the processing constant in order to use the dynamic range of the measuring system. The microprocessor parameters affect the efficiency of the intelligent algorithm. For this reason, part of the fuzzy controller should be implemented in the optimized form in order to relieve the microcontroller from calculations. The easiest way is to use operational amplifiers. Mention above the circuits act as a controller function block for fuzzification the output signal from the additional shunt. Takagi Sugeno Kang's inference system was selected in the proposed system due to the lack of a defuzzifier, which influences into its speed of operation. Carrying out computer simulations proved the effectiveness of the proposed system.
Influence of pulsed electric field on mortality of yeasts of the genus Candida
Authors: Kiełbasa P. , Miernik A. , Dróżdż T. 
Published: December 2022

Abstract
Pulsed electric field (PEF) is a technology that uses short duration high intensity electrical pulses. Application of such a field causes electroporation of the cell membrane and consequently increases its permeability [1]. The genus Candida includes about 200 species, some of which are pathogenic to humans. These microorganisms are potentially used as a source of proteins, polysaccharides and biocomplexes in nutrition [7]. The mechanism of microbial inactivation by PEF is related to the formation of pores in the membrane, as indicated by many authors. The aim of this study is to determine the parameters of pulsed electric field affecting the lethality of selected Candida yeast strains, as well as to determine the percentage of dead cells, after PEF exposure. Depending on the voltage applied and the number of pulses, variation in yeast cell mortality is noted. In comparison with the control samples, with the increase in the number of pulses at each voltage variant, an increase in mortality among the tested yeast strains is observed.
Testing of inductors using the NI Multisim simulation program
Authors: Ptak P , Prauzner T , Noga H , Migo P 
Published: December 2022

Abstract
The article describes the possibilities of using the NI Multisim simulation program to measure the parameters of inductors. The content describes 3 electronic circuits used in the laboratory during didactic classes on the testing of inductors. After measurements of the actual measurement systems, the same electronic systems were designed in the NI Multisim simulation program. In this program, measurements were made on the basis of simulated electronic circuits. Then, the measurements made in real conditions and those measurements made in the NI Multisim smulation program were compared.
Comparison of QEEG test results with regard to the environment
Authors: Prauzner T , Prauzner K , Ptak P , Noga H , Migo P , Małodobry Z 
Published: December 2022

Abstract
The article presents the results of investigations of selected factors interfering the QEEG electroencephalography performed with the Mitsar EEG 202 apparatus and the LZ-643 magnetic field strength meter. The accuracy of QEEG research depends on the occurrence of so-called artifacts, which are the source of magnetic fields occurring in the environment and disturbances in the power supply for measuring apparatus. The research was carried out in the Laboratory of Experimental Research Biofeedback of the Jan Dlugosz University in Czestochowa.
Impact of pulse electric field on the level of photon emission in selected soft fruits
Authors: Trzyniec K , Skorupa K , Stachurska M 
Published: December 2022

Abstract
In the food industry around the world, pulse electric field (PEF) is becoming one of the most popular methods of preserving food products at low temperature. PEF is an excellent alternative to standard food preservation processes (such as high temperature, changing water activity or pH, or adding preservatives), because it does not heat the product and does not lose valuable ingredients, while maintaining the health-promoting nature of food [1]. In turn, health-promoting ingredients in food show a greater ability to ultimately emit photons. Therefore, the level of photon emission in selected soft fruits was examined before and after the impact of the pulse electric field (PEF) on them. The mean values of photons emitted by the product samples were compared and the standard deviation was analyzed. The analysis of the results showed slight differences in the number of photons emitted, both between different types of fruit and between samples of the same fruit (before and after exposure to PEF).
Prototype of photovoltaic system with dual axis tracker and flat mirror concentrators
Authors: Boyarchuk V , Syrotiuk V , Kuzminsky R , Syrotyuk S , Halchak V , Baranovych S , Yankovska K , Ftoma O , Chochowski A , Obstawski P , Aleksiejuk J , Awtoniuk M , Jakubowski T , Giełżecki J 
Published: December 2022

Abstract
Use of a solar tracker and concentrator of solar radiation flow is distinguished among the most efficient ways to improve electric efficiency of a photovoltaic system. The aim of the research is to detect the effect of each of the ways to improve efficiency of photovoltaic system by comparing installations of different structure (stationary oriented panel, a panel with two-axis tracker and a panel with two-axis tracker and flat mirror concentrator). Basing on the carried analysis of the existing constructions of solar tracking systems, the research substantiates structure of the studied prototype, which moves around the polar axis in a day cycle of tracking, and makes a change of the zenith in a seasonal cycle of the system operation. To secure the function of solar tracking by a photovoltaic panel the research has developed a construction, an algorithm and a program of intellectual microprocessing control system, which supplies tracking of azimuth and zenith angles and protection of the tracker from destruction in case of stormy winds. To argue size dimensions and profile of the principal elements of the tracker construction, the researchers have developed a virtual 3D model and proposed a kinematic-constructive scheme of a rotation gear drive. The work proposes methods of automation of a comparative examination of photovoltaic systems with different structural scheme, which are based on the hardware platform Arduino and software LabVIEW of the company National Instruments.
The use of dual machine learning in industrial electrical tomography
Authors: Rymarczyk T , Kłosowski G , Cieplak T , Niderla K 
Published: December 2022

Abstract
Machine learning techniques are playing a key role in tomography. Process tomography, also known as industrial tomography, uses a variety of physical phenomena. Contrary to the commonly used computed tomography in medicine, electrical, ultrasound, radio and even optical tomography are used in industry. In electrical tomography we distinguish between impedance and capacitance tomography. This manuscript presents an algorithmic method to allow accurate measurements of reactors and industrial vessels using electrical impedance tomography. Reactors may contain liquids which undergo phase changes resulting in crystallization or gassing. The tomograph can detect gas crystals or bubbles. The innovative contribution of the authors is the development of an original algorithm that allows the conversion of input measurements to 2D images. First, the algorithm trains multiple single-output neural networks, each of which generates a single image pixel. Secondly, two models were used (support vector machines and artificial neural networks), which were assigned to individual pixels of the image. The image was reconstructed using two methods, not one, so the new method was called dual machine learning (DML). In order to assess the effectiveness of the new approach, both homogeneous methods (SVM and ANN) were compared with the new DML method. The results confirmed the higher effectiveness of the new approach.
Boosting the photocatalytic activity of electrolyte for higher energy efficiency in water electrolysis under influence of an optimal laser
Authors: Niaz U , Aziz M S , Mufti N , Salleh M S , Krishnan G , Daud S , Abdullah Faizuan , Wirzal M D H 
Published: December 2022

Abstract
In current study a careful and dedicated observation was done to investigate the effect of the externally applied optical field on electrolysis of water to produce hydrogen. As optical field sources, the green and red diode pumped solid state lasers (DPSSL) were utilized. Due to its non-absorbance characteristics in water, the green laser has had the largest impact on the generation/production of hydrogen. In order to dissociate hydronium and hydroxide ions during orientation toward polarisation of water, the electrical field's intensity must be high enough. The mechanism of optical field to expose the hydrogen production in water electrolysis has the capability to break the autoprotolysis and generate the auto-ionization. However, the presence of a sacrificial agent and a laser source combined to produce a better effect, resulting in a five-fold increase in hydrogen output compared to ordinary water electrolysis. UV-Vis and the gas chromatography was performed for supporting the research claim. The gas chromatogram was indicating a clear peak at retention time 1.47 minutes with abundance 338878 a.u. which predicts the purity and abundance of produced hydrogen.
Fast and accurate Brillouin frequency shift extraction in Brillouin optical time domain reflectometry (BOTDR) distributed fiber sensor by using ensemble machine learning algorithm
Authors: Almoosa A S K , Zan M S D , Ibrahim M F , Tanaka Y , Hamzah A E , Arsad N 
Published: December 2022

Abstract
To improve the Brillouin frequency shift (BFS) resolution measurement and processing time of the differential cross-spectrum Brillouin optical time domain reflectometry (DCS-BOTDR) fiber sensor, our team suggests employing the ensemble machine learning (EML) technique. Because it gave the best BFS resolution compared to the other TL cases, we used the BFS distribution data recorded by the pulse duration TL =14 ns case as ground truth to train the EML model in this work. After that, we tested the EML model for TL =4, 60, and 90 ns cases. We improved the BFS resolution for all TL situations by approximately 2.85 MHz, comparable to our resolution when TL was equal to 14 ns. This result demonstrates that the EML algorithm is reliable, efficient, and highly accurate in its predictive capabilities. Additionally, we have documented a rapid processing time of approximately one second. In addition, we have successfully demonstrated 20 cm spatial resolution measurement for TL =60 and 90 ns, which was not previously possible with the usual DCS-BOTDR signal processing method.
Random Lasing Emission of ZnO Nanorods from Different Seeding Thickness
Authors: Rosli Nurizati , Halim Mohd Mahadi , Kamil Wan Maryam Wan Ahmad , Hashim Md Roslan , Hsu Hsu-Cheng , Zhuang Jia-Yuan , Siyuan Chan 
Published: December 2022

Abstract
We present the growth of ZnO nanorods (NRods) prepared by chemical bath deposition on 100 nm and 200 nm ZnO seed layer sputtered on glass substrate. The structural and optical properties of ZnO NRods were investigated by Field Emission Scanning Electron Microscope (FESEM), energy-dispersive X-ray (EDX), X-Ray Diffraction (XRD), and UV-Visible (UV-Vis) analyses. Random lasing (RL) emission behaviour was characterized by pulsed-wave micro-photoluminescence (pw µ-PL) analysis. Changed in seed layer thickness on 100 nm and 200 nm, allowing for greater particle size of ZnO NRods to form, while maintaining the preferred diffraction of self-organized growth direction with high-quality c-plane. The reduction in optical properties of ZnO NRods also lowering random lasing emission threshold toward higher excitation power density from 37.86 kW/cm2 to 95.40 kW/cm2.
Specialized Colorimeter for Phenol red pH Measurement
Authors: Louis K C , Abdul Hamid S H F W , Raffay R , Omar A F 
Published: December 2022

Abstract
The phenol red is commonly used in cell culture medium as visual pH indicator by changing its color from darker red color to the orange-yellowish color as the pH is changing from neutral to acidic level. The color change of phenol red is hardly to be determined by using naked eyes that will be interpreted differently by different person. Thus, this study is executed to develop a specialized colorimeter for phenol red pH measurement by using Raspberry Pi as a microcontroller unit, green LED as a light source and photodiode in tandem with capacitor as a light sensor. The Raspberry Pi calculated the capacitor charging time which is in relative to the amount of light sensed by the photodiode. Based on the results, the capacitor charging time can be related to the pH value by using non-linear relationship with high accuracy of R2 = 0.8946 and RMSE = 0.4447. This study successfully introduced the development of low-cost system for phenol red pH measurement by applying the capacitor charging time which is in correspond with the absorbance value.
Potential of Fermented Commercial Feed to Replace Silk Worms on Post larvae of Asian Redtail Catfish (Hemibagrus nemurus)
Authors: Heltonika B , Afriani S , Siagian D R , Lesmana I , Karsih O R 
Published: December 2022

Abstract
Asian redtail catfish (Hemibagrus nemurus) is an economically fish on Malay community. On its breeding requires silk worms as natural food that has the best for growth and survival in the post larvae phase. On the other hand, the availability of silk worms is very dependent on natural conditions. During the rainy season, the availability of silk worms becomes very rare, and this becomes a separate problem for general fish breeders. Based on this, the aimed of this research was to determine how the effect of alternative feeds, in the form of fermented commercial feeds, on the growth performance and survival rate of Asian redtail catfish post larvae. This study used a completely randomized design with 3 treatments and 3 replications, namely rare of Asian redtail catfish post larvae with silkworm feed (A), fermented commercial feed (B), non-fermented commercial feed (C), the size of post larvae used was 11.00 ± 0.00 mm, with a stocking density of 4 fish/L. The best results from this study were found in treatment A, which resulted in absolute weight growth of 0.77 ± 0.00 g, absolute length growth of 23.33 ± 0.36 mm, but the highest survival rate was obtained in treatment B (81.33 ± 4.51%), although not significantly different from treatment A. Based on the observation of feed structure, fermented commercial feed was structurally softer. The behavior of the feed response, treatment B was not different from treatment A, while the behavior of the feeding pattern showed that fermented feed (B) was better than non-fermented commercial feed (C). The results of the proximate test, the fermented feed decreased in protein, fat and crude fiber content, while the ash content increased slightly.
Antibacterial Activity of Ethanolic Extracts from Jeringau (Acorus calamus)
Authors: Setiaji J , Hariwitonang J , Johan T I , Heriyanto  
Published: December 2022

Abstract
Increased resistance of pathogenic bacteria due to the use of antibiotics has become a major concern in the aquaculture industry. Environmentally friendly products are urgently needed to replace antibiotics for the treatments of fish diseases. This study aims to determine the activity of extract of Jeringau (Acorus calamus) as an antibacterial towards Aeromonas hydrophila, Pseudomonas aeruginosa and Vibrio alginolyticus. The A. calamus extract was obtained by maceration using ethanol as a solvent. This extract was tested for its phytochemical content and its antibacterial activity was tested using the agar diffusion method. The treatments used were concentrations of A. calamus extract 200, 300, 400, 500 and 600 mg mL-1. Phytochemical test results of A. calamus extract produced alkaloids, phenolic compounds, saponins, terpenoids and flavonoids. The results of the inhibition test showed that A. calamus extract with a concentration of 200 was able to inhibit the growth of Aeromonas hydrophila bacteria by 13.9 mm, 300 (14.4 mm), 400 (14.8 mm), 500 (16.2 mm), 600 (16.5 mm). On Pseudomonas aeruginosa, the concentrations were 200 (13.9 mm), 300 (14.5 mm), 400 (15.2 mm), 500 (15.5 mm), 600 (16.2 mm). On Vibrio alginolyticus, the concentrations were 200 (15.5 mm), 300 (15.7 mm), 400 (16.4 mm), 500 (18.7 mm), 600 (19 mm). In conclusion, A. calamus extract can be used to inhibit the growth of pathogenic bacteria in fish.
Quality evaluation of moringa (Moringa oleifera) leaves fermented by various dosages of Aspergillus niger as ingredients for fish feeds
Authors: Suharman I , Aryani N , Hasan B , Adelina A , Lukistyowati I , Raysha L , Karo-Karo R M , Caipang C M A 
Published: December 2022

Abstract
The Moringa oleifera leaves are a promising candidate plant protein source for fish feeds because of its high crude protein content, varying from 21% to 32%. However, because of high content of crude fiber in moringa, it can reduce the digestibiliy of the nutrients. Therefore, there is a need for intervention to improve the quality of M. oleifera leaves. The current research was carried out to assess the nutrient quality of M. oleifera leaf meal (MOLM) following fermentation with Aspergillus niger at different dosages as alternative feed ingredients for fish. In this study, a completely randomized design with four treatments and three repetitions was used. The treatments were as folllows: F0 = Fermentation of MOLM without A. niger (control), F1 = Fermentation of MOLM with A. niger at 2% (w/w) of MOLM, F2 = Fermentation of MOLM with A. niger at 4% (w/w) of MOLM and F3 = Fermentation of MOLM with A. niger at 6% (w/w) of MOLM. Results showed that MOLM fermented with A. niger had a significant effect on crude fiber and crude protein. It can be concluded that MOLM supplemented with 6% A. niger could improve crude protein and crude fiber quality of Moringa oleifera leaves.
The Use of Pineapple Extract to Remove Egg Adhesiveness in the Production of Asian Redtail Catfish Fry (Hemibagrus nemurus CV)
Authors: Sukendi  , Thamrin  , Putra R M , Nuraini  , Andriani D 
Published: December 2022

Abstract
Asian redtail catfish (Hemibagrus nemurus) is one of the freshwater fish commodities that have high economic value and are popular with the public. To meet the consumption needs of the community, this fish farming business has started to be carried out, but the provision for the cultivation needs is still an obstacle that is always encountered. This is because of the high adhesion of the eggs in the hatching that is carried out so it will affect the fertilization and hatching values obtained. The purpose of this study was to analyze the use of pineapple extract with different doses on egg adhesion, fertilization, hatching, growth, and survival of Asian redtail catfish fry. This research was conducted from April to June 2022 at the Laboratory of Fish Hatchery and Breeding, Faculty of Fisheries and Marine Science, Riau University. The design used was a completely randomized design with a dose of pineapple extract consisting of a P0 dose of 0% (control treatment without soaking pineapple solution), P1 dose of 0.75% (immersion treatment with a dose of 0.75 ml pineapple solution/liter of water). P2 at a dose of 1.00% (immersion treatment with a dose of 1.00 ml of pineapple solution/liter of water) and P3 at a dose of 1.25% (immersion treatment with a dose of 25 ml of pineapple solution/liter of water). The results showed that the best treatment was obtained at P2 treatment at a dose of 1.00% (immersion treatment with a dose of 1.00 ml pineapple solution/liter of water) with a fertilization value of 89.50%, hatching value of 82.37%, egg adhesion value 26, 16%, absolute weight growth of 1.3151 g, absolute length growth of 4.74 cm, a daily weight growth rate of 13,8057 % and survival rate of 72%.
Carotenoid Pigments in Vanname Shrimp Carapace (Litopenaeus vanname) as Natural Antioxidant
Authors: Karnila R , Yunus A A 
Published: December 2022

Abstract
The by-product of vanname shrimp in the form of carapace that is not used can pollute the environment. The carapace has the potential of carotenoid pigments as natural antioxidant capable of reducing free radicals. The use of enzymes in the extraction of carotenoids does not produce residues that are harmful to the body and the environment. Papain enzyme is a sulfhydryl enzyme which has more extensive capabilities than other protease enzymes. The main ingredients used were carapace of vannamei shrimp from a traditional market in Pekanbaru. The purpose of this study was to obtain the best papain enzyme concentration and to determine the antioxidant activity of the carotenoid extract of vanname shrimp carapace. This research was conducted using an experimental method according with to the modified Simpson and Haard research. The research treatments were different concentrations of papain enzymes (3, 6, and 9%) with Completely Randomized Design (CRD). The research consisted of three stages: (1) the manufacture of carapace powder for vannamei shrimp, (2) the extraction of carotenoids, (3) the identification of carotenoids by spectrophotometry. The results of the study of 3 kg of vannamei shrimp obtained a flour yield of 42.36% and the yield of carotenoid extracts, namely the concentration of 3% (3.77%), 6% (2.97%), and 9% (3.98%).