bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on pipeline connection structure of microwave load water-cooling system for spacecraft thermal test
Authors: Wu Yue , Huang Nianzhi , Sun Juan , Du Peng , Cao Zhengbin 
Published: October 2022

Abstract
The microwave load water-cooling system was operated in a vacuum cold black environment, and the pressure difference between the inside and outside of the water pipe could reach 0.3 to 0.4 MPa. To ensure the tightness of the water pipe, a conical seal structure was selected, the macro-static model and micro-boundary element contact model were established for the two forms with and without the Viton seal. The macro model simulation was performed by the finite element method to obtain the stress distribution inside the conical structure under different preload stress, the relationship between the contact pressure of the conical sealing interface and the contact area of the O-ring sealing interface as a function of preload stress; the method was used to calculate the micro-contact model, and the critical contact pressure and contact area to achieve the sealing requirements were obtained respectively without Viton seal and with Viton seal. As a result, a conical seal structure with a Viton seal was finally chosen for application. After verification, the structure meets the requirements for the use of microwave load water-cooling systems during the vacuum thermal test.
Design and measurement of a single-band metasurface sample in the terahertz band
Authors: Xu Hengbo 
Published: October 2022

Abstract
A single-band metasurface sample in the terahertz band is designed, simulated, and measured. This terahertz metasurface sample reveals a transmission peak. And the resonance frequency of this peak is 2.06THz (amplitude is 0.74, half-bandwidth is 0.7THz). In experiments, the diameter is reduced, which leads to the amplitude is enahcned and this peak move to low frequencies. The parameter T3 is reduced, which results in the amplitude of the transmission peak strengthened, while the resonance frequency stable. When the incident angle of the electromagnetic wave is increased, this transmission peak is reduced and the resonance frequency moved to the low frequencies. The polarization angle is increased, the metasurface sample exhibits similar resonance behaviors.
Development and experiment of high efficiency gradient filter based on inverse problem solving method
Authors: Mao Xumin , Zhong Xiaopu , Xu Yuzhe , Jin Zhen , Peng Xi 
Published: October 2022

Abstract
In order to design the gradient filter for indoor air purification accurately and quickly, an inverse problem design method was proposed, and the best gradient filter meeting the design requirements was developed. The filtration performance test of the gradient filter was carried out, and the test results meet the design target value. The theoretical calculation values and test values of filtration efficiency and resistance are compared and analyzed. It is found that their theoretical calculation values and test values are within the normal deviation range, which verifies the feasibility and correctness of the inverse problem solving method.
Reliability Evaluation Method of New Energy Distribution Network Based on Improved Correlation Weight Method
Authors: Zhang Mingze , Shi Fangdi , Qiu Cheng , Chu Linlin 
Published: October 2022

Abstract
The reliability of the distribution system includes adequacy and security. Adequacy refers to the degree to which the system capacity meets the power and energy demand of the load. Security is the evaluation of the system’s ability to withstand sudden failures. In view of the uncertainty of decision factors and the difficulty to quantify the weights in the process of reliability evaluation of distribution network, an evaluation method for load restoration of a smart distribution network based on the improved relevance weight with index correlation and improved analytic hierarchy process (AHP) is proposed. The paper also proposes an evaluation system including distribution network structure level indexes. The planning scheme of the distribution network is comprehensively evaluated, and the effectiveness of the method is analyzed through the comparison of actual cases combined with the indicators of the grid structure level. Experimental analysis shows that compared with the traditional power supply reliability or system average outage time, the global index considering LRP is more refined in describing the impact of outage, and the evaluation results are more accurate.
Hot Spot Detection of Photovoltaic Module Infrared Near-field Image based on Convolutional Neural Network
Authors: Fan Fu , Na ZhiXiong , Zhang ChangZhi , Li HaoRan , Tong ChaoLiu 
Published: October 2022

Abstract
With the installation and use of large-scale photovoltaic systems around the world, the detection of photovoltaic system operation and maintenance has become increasingly important. This research uses a convolutional neural network training model to detect and classify the infrared near-field images of photovoltaic modules from small-scale photovoltaic plants in the laboratory. This model classifies the images into two categories: with and without hot spots, with a classification accuracy of 96.58%. The experimental results show that the convolutional neural network training model has a good classification result
Mobile robot communication fault diagnosis method based on swarm intelligence algorithm
Authors: Wen Junfeng , Feng Dengchao , Ding Zhaoxia , Wang Yao 
Published: October 2022

Abstract
The current communication fault diagnosis methods mainly focus on the classifier with fault probability, which often leads to the low diagnosis efficiency. In order to overcome the above problems, mobile robot communication fault diagnosis method based on swarm intelligence algorithm is proposed in the paper. Firstly, the abnormal data is extracted after the analysis of the communication data with Kalman filter. Secondly, the supporting decision model was designed to standardize the communication exchange process and locate the fault range. Futher more, the ant colony optimization algorithm combined with particle swarm optimization was used to locate the fault area, and the multi-model hybrid method was adopted to comprehensively judge the communication fault. The different interference ratio was used in the experiment to test the performance of the proposed algorithm compared with the SVM and Bayesian model. Finally, the experiment results show the validity of mobile robort communication fault diagnosis based on swarm intelligence algorithm.
Optimal Peak Shaving Analysis of Power Demand Response Considering Unit Uncertainty
Authors: Cong Yunhua , Zuo Feng , Li Tongqing , Shen Miaozhao , Li Jin , Zhu Lei 
Published: October 2022

Abstract
With the increasingly prominent environmental problems and the promotion of the “double carbon” goal, the participation of demand-side response resources in load peak shaving and valley filling is of great significance to the development of the power industry. In this paper, based on the background that demand-side response is being rapidly developed in China, we firstly consider the uncertainty of generating units and the operating constraints of power system and units, and construct the day-ahead output model of generating units by using stochastic production simulation and day-ahead optimal scheduling. Then, based on this model, we consider the impact of demand response on system peak shaving and build a demand response power system optimal scheduling model with unit uncertainty. Finally, the power supply and demand of the IEEE30 node system on two typical days of peak shaving considering demand response are analysed by MATLAB, and the minimum service cost of demand response and the amount of pull-out limit are derived, which clarify the important role of demand response in the process of power system peak shaving.
Interfacial Stress Analysis of PVD Thin Film Sensor Based on Finite Element
Authors: Zhou Yiming , Cui Ronghong , Song Yujian , Fan Xianghong , Zhu Jian 
Published: October 2022

Abstract
The ability to monitor fractures is based on the integration of PVD thin film sensors and substrates, and the interface stress distribution of the sensor under load which directly impacts the bonding performance. This research analyzes the impact of film elastic modulus and thickness on film-substrate interface stress using the Abaqus software to investigate the influence of PVD film sensor material properties on the film/substrate interface stress distribution. The higher the concentration of interfacial tension, the thicker the layer. The sensor's structural parameters were optimized and significantly enhanced crack detecting sensitivity. The results reveal that the PVD film sensor material can detect structural defects efficiently. The conclusions established in this work have some implications for the optimal design of PVD thin film sensors.
Observation of Distinct Structural Phase Transition in Bulk CrI3 Magnet
Authors: Zhen Liu , Bo Peng 
Published: October 2022

Abstract
Exploring structural phase is not only vital for fundamental physical properties, but also crucial for creating innovative devices. The emerging two-dimensional (2D) ferromagnet CrI3 has been widely studied because of its novel magnetic order, stacking order and related properties. Conventionally, it is predicted that the high-temperature monoclinic crystal phase will convert into low-temperature rhombohedral crystal phase in bulk CrI3 at a critical temperature of ~ 220 K. Strikingly, here, a high-temperature monoclinic phase in bulk CrI3 flake is completely preserved upon cooling from 295 to 10 K beyond the conventional phase changes, breaking out the regular cognition. This work indicates that complex structural phases coexist in bulk CrI3 ferromagnet, which are attributed to the difference between the surface and inner layers. These findings not only deepen the understanding of 2D ferromagnetic materials, but also provide opportunities for constructing future 2D-based magneto-optic and magneto-mechanical devices.
Discussion on the Causes of Cracking and Failure of Anticorrosion Layer of a Pipeline
Authors: Zhixin Chen , Xiang Zhang , Shen Cong , Quan Jin 
Published: October 2022

Abstract
The cause of a rare cracking failure accident of the polyethylene (PE) anti-corrosion layers of a pipeline is analyzed and determined. The properties of the PE raw materials and the anti-corrosion layers were detected and analyzed according to the standard, and the micro-morphology of the anti-corrosion layers was characterized by the scanning electron microscope (SEM). The storage modulus and loss of the anti-corrosion layers at the range of -100~40 °C were tested by the dynamic mechanical analysis (DMA), and the stress of the anti-corrosion layers at low temperature (-40 °C) was calculated. The average thermal expansion coefficient of the anti-corrosion layers in the range of -40~60 °C was tested by the thermomechanical analysis (TMA), and the value at room temperature was obtained, which was compared with the value of the steel materials. The failure accidents caused by raw materials and anti-corrosion layers due to the quality problems, as well as aging and damage of anti-corrosion layers are excluded. The SEM results confirmed that the anti-corrosion layers with no obvious large-scale defects, there were microscopic defects less than 1 μm. At the low temperature (-40 °C), the storage modulus of the anti-corrosion layers is 2.58 GPa, and the corresponding stress is 23.99 MPa, which is higher than the tensile strength test value (22.21 MPa). The average thermal expansion coefficient of the anti-corrosion layers is 14.3×10-5/°C, which is higher than that of the steel material (1.2×10-5/°C). The high stress at low temperature (-40 °C) is one of the reasons for induced defects to cause cracks, and the huge difference in thermal expansion coefficient between the anti-corrosion layers and the steel material is another reason for that.
Charging Station Planning of Electric Vehicle in Battery Swapping Scene
Authors: Shangguan Zizhuo , Qi Dongfeng 
Published: October 2022

Abstract
In response to the national green development concept, the electric vehicles quantity continues to surge. However, the cost of electric vehicle charging facilities is hindering the development of electric vehicles. Considering charging facility cost and fuel consumption cost of logistics vehicles, we propose the charging planning for electric vehicle batteries. First, according to the user’s mileage, we simulate the maximum demand for electric vehicle batteries in each time. Then, based on the electric vehicle battery charging planning, we establish an optimization model for the number of battery charging equipment and the fuel consumption cost of logistics vehicles. Finally, through specific examples we show the optimal number of delivery is 4 from the battery charging station to the battery swapping station. The battery charging equipment are 368 units and the fuel consumption cost of the logistics vehicle is 8040 RMB per day. In addition, the number of logistics vehicle departures is reduced by 3 compared to the same amount of delivery, which significantly improves the stability and efficiency of the battery swapping scene.
Design of output filter device of mine-used high-voltage inverter for long-distance power supply
Authors: Wang Yue 
Published: October 2022

Abstract
During the long-distance transmission of the Pulse width modulation ( PWM ) signal of the mine-used inverter, the voltage reflection phenomenon leads to a higher peak voltage at the motor end, which accelerates the insulation aging of the motor and reduces the overall reliability of the system. In this paper, ANSYS is used to simulate the electromagnetic field of cable and cable connector and extract the distributed parameters. On this basis, the simulation model of long-distance power supply system of 3300V mine-used high-voltage inverter is established by MATLAB / Simulink, and the harm caused by peak voltage to motor is analyzed. According to the cable length, the number of cable connectors and the power loss of the device, a design scheme of LRC filter device meeting the power supply distance of 3000m is proposed. Simulation and experimental results verify the effectiveness of the filter device.
Optimal Dispatch of Multi-energy System Based on Carbon Trading Auxiliary Service
Authors: LI Zhengxi , AN Na , Liu Tingxiang , Wang Gangfei , Qin Lidong , MA Hengrui 
Published: October 2022

Abstract
The energy economy, flexibility and low carbon of multi-energy system is one of the research hotspots of multi-energy system, a comprehensive energy system optimization scheduling method considering carbon trading is proposed. On the basis of considering the dynamic output of heat network equipment, an optimal dispatch model of the integrated energy system is constructed through energy coupling equipment such as cogeneration units, heat pumps, and gas turbines. Firstly, the thermal dynamics of heating pipes and heating buildings are modeled in detail. Then, taking the lowest operating cost of the integrated energy system and the lowest carbon transaction cost as the objective function, and taking the energy balance constraints and network constraints as the constraints, a day-ahead optimal scheduling scheme of the integrated energy system is proposed. Finally, the simulation results show that the multi-energy optimal scheduling method can effectively reduce the expenditure of the multi-energy system, increase the penetration ratio of wind and solar power generation, and reduce the overall carbon emissions of the system.
The Potency of Karamunting Borneo Plants From Weeds Into Herbs
Authors: Jumiati E , Ismandari T , Amarullah  , Willem  
Published: October 2022

Abstract
Indonesia has a very high potential for biodiversity, both flora and fauna so that Indonesia is also known as a mega-biodiversity country. The use of certain types of plants is carried out by the community, one of which is for treatment and is usually inherited from generation to generation. Traditional medicine is the basis of modern medicine, in developed countries there are more traditional and herbal medicines than synthetic ones. One of the flora that has potential as a medicinal plant is karamunting. Karamunting plants are often found as weeds, both in yards and fields, even on marginal lands. The research method used was survey and laboratory methods. The ethnobotanical aspect of the karamunting plant, the community used some parts of the karamunting plant as medicine. The ecological aspect of the Karamunting plant has a fairly high life potential with a density level of 1.81 trees/m2 with a clustered distribution pattern. Meanwhile, from the phytochemical aspect, the karamunting plant has the potential as a medicinal plant containing flavonoid compounds, alkaloids, steroids and saponins found in the roots, stems, leaves, flowers and fruits that function to prevent and cure various diseases.
Ichtyofauna in Kayan Watershield Bulungan Regency, North Kalimantan
Authors: Jabarsyah Abdul , Rahmawani Dori , Taqwa Amrullah , Simanjuntak Ricky Febrinaldy 
Published: October 2022

Abstract
The Kayan River is the longest in North Kalimantan, inhabited by various types of aquatic biota. However, in recent times there have been established multi-national oil palm plantations and mining around the Kayan River which will have an impact on the Kayan River ecosystem. The aim of this study is to determine the ecological status of the Kayan River based on current conditions. Fish sampling is carried out along the Kayan River starting from the upper reaches of the Bahau River to the downstream. Identification of fish is based on the Fishbase Organization, FAO and Kottelat. Measurement of water discharge using the SNI 8066: 2015 method, Total Suspended Solid refers to SNI 06-6989.3-2004. Determination of species diversity using the Shannon-Wiener Index, while the measurement of dominance index uses the Simson Index. The results obtained 37 species from 16 families during the 2019-2020. The family of Cyprinidae is the largest fund with 32%. Among the 37 species found 9 native species of Kalimantan, 3 invasive species, 1 species of saltwater fish, and 2 species of fish are included in the IUCN red list. Fish that are included in the endemic/native category of the Kayan River are Anguilla borneensis, Hemibagrus capitulum, Nematabramis alettes borneensis, Clupeoides borneensis and Osphrenemus septemfaciatus, and Pangasius rheophilus. Based on the results of the study, it can be concluded that the ecological status of the Kayan River fish is still considered very good and stable during the research period.
The Effect of Shrimp Waste Fertilizer Application on Spinach (Amaranthus tricolor L.) with the Presence of Weeds
Authors: Murtilaksono A , Septiawan R A , Hasanah F , Adiwena M 
Published: October 2022

Abstract
The presence of weeds in spinach cultivation land is strongly influenced by the application of fertilizer. Fertilizer has a different content so that it will have an impact on the weed species growth. Identification in this study aims to determine the types of weed species that grow and the dominant types of weed species that grow on spinach cultivation land before and after the application of shrimp waste fertilizer. This research was conducted from June to August 2021, on horticultural crop cultivation in the Sinar Harapan Farmers Group, Tarakan City. The sampling method was a random method using a square plot method with a size of 1 x 1 m as many as 30 samples before and after the application of shrimp waste fertilizer. Observation parameters are counting the number of weed species and the name of the weed species. The data obtained in the field is then processed to determine the level of density, frequency, significant value index (INP), Summed Dominance Ratio (SDR), Margalef Index, Shanon-Wiener Index, Evennes Index and Sorensen Index. The results showed that the weed species before the application of shrimp waste fertilizer on spinach plants were 27 species with the dominant weed species being Cyperus compressus with a Summed Dominance Ratio value of 22.72%. Weed species before the application of shrimp waste fertilizer on spinach plants were 25 species with the dominant weed species namely Cyperus compressus with a Summed Dominance Ratio value of 20.51%. The Margalef index before the application of shrimp waste fertilizer was 3.20 and after the application of shrimp waste fertilizer was 3.05. The Shanon-Wiener index before the application of shrimp waste fertilizer was 2.60 and after the application of shrimp waste fertilizer was 2.40. Evennes index before the application of shrimp waste fertilizer is 0.79 and after the application of shrimp waste fertilizer is 0.74 and the Sorensen index is 85%
Natural Enemies of Pest in Rice Cultivation of Sesayap Watershed Area, Tana Tidung Regency
Authors: Rahim Abdul , Rahmawandi Yudi , Nurmaisah  , Adiwena Muh , Haka Paolus Donatus , Setiawan Anggun 
Published: October 2022

Abstract
Study of potency natural enemies are base for utilization as a natural control of pests. This study was determined the main of natural enemies on rice cultivation in several site in Sesayap watershed area, especially Tana Tidung Regency. The study sites were collected in Tideng Pale, Gunawan, Sesayap Hilir, Rian, and Tana Merah. Each site was sampled at 5 points using traps, sweep net, and yellow pan traps. The results showed insect group consisted of 32 families, 44 genera, 44 species and 836 individuals. The Araneae group were consisted of 11 families, 12 genera, 13 species and 347 individual species. Insect predatory have highest number which were Dolichoderus taschenbergi (24.7%), Chlaenius nigricans (19.9%), and Anoplolepis gracilipes (17.8%). The Shanon-Wiener species richness and diversity index, and the evenness index in Rian (R=5.93; H’=2.77; E=0.79), Bandan Bikis (R=3.63; H’=2.16; E=0.75), Tana Merah (R=6.48; H’=2.16; E=0.62), Tideng Pale (R=6.48; H’=2.90; E=0.79), and Gunawan (R=5.86; H’=2.73; E=0.76) respectively. The Tideng Pale and Rian have the highest similarity index (67%), while the lowest index at the Tana Merah and Tideng Pale sites (44%). Natural enemies of predators tended relationship with Gunawan and Rian site. Meanwhile, site of Bandan Bikis tended relationship for enemies of parasitoids. Based on these results, the Sesayap watershed of Tana Tidung Regency has a high species richness, but the diversity is classified as moderate. Thus, it is necessary to make efforts to conserve natural enemies of pests in the Sesayap watershed area, Tana Tidung Regency.
Effect of temperature and relative humidity on the respiration rate of coated banana (Musa acuminata)
Authors: Kasim Rahmiyati , Bintoro N , Rahayoe S , Pranoto Y 
Published: October 2022

Abstract
The respiration rate of fruits is influenced by the temperature and relative humidity (RH) of the surrounding air. This research aims to determine the effect of storage air temperature and RH on the respiration rate of the coated banana. In this work, the bananas were coated with a combination of sago starch and cellulose nanofiber then was measured the respiration rate. The respiration rate was investigated using a closed system at three different temperatures namely 10°C, 17.5°, and 27°C, and three levels of RH that are about 70%, 80%, and 90% during 10 days of storage. Changes in oxygen and carbon dioxide concentrations were measured daily. The respiration rates of the coated banana (O2 consumption (RO2) and CO2 production (RCO2)) and the RQ value was influenced by storage time, storage temperature, and the interaction of those two factors. RH was found to have no significant effect on these three parameters. The Arrhenius equation was found to be suitable for the RO2 and RCO2 model and can be used to predict RO2 or RCO2 of the coated banana under real conditions for RH ranging from 70% to 90% and storage temperature ranging from 10°C to 27°C.