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The effect of NaOH and KOH on the strength-mechanical properties of alkali-activated composites based on granulated blast-furnace slag NaOH 和 KOH 对基于粒化高炉矿渣的碱活性复合材料强度-机械性能的影响
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2792/1/012001
R. Gandel, J. Jerabek, Z. Marcalíková, P. Ćmiel
{"title":"The effect of NaOH and KOH on the strength-mechanical properties of alkali-activated composites based on granulated blast-furnace slag","authors":"R. Gandel, J. Jerabek, Z. Marcalíková, P. Ćmiel","doi":"10.1088/1742-6596/2792/1/012001","DOIUrl":"https://doi.org/10.1088/1742-6596/2792/1/012001","url":null,"abstract":"\u0000 Alkali-activated systems are a more sustainable alternative to Portland cement concrete. The activation of latently hydraulic and pozzolanic raw materials in these composites is one of the many investigated factors, where the price ratio and the ability to optimally activate the mentioned precursors with the given activator play a major role. The subject of the presented work is a comparison of the influence of NaOH and KOH on the development of the strength-mechanical properties of alkali-activated materials based on granulated blast furnace slag - the secondary raw material of metallurgical processes.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141851258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solar physics and space weather research at the Institute of Astronomy and NAO - BAS: Solar cycle trends of space weather drivers 天文学研究所和挪威国家天文台的太阳物理学和空间气象研究 - BAS：空间气象驱动因素的太阳周期趋势
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2794/1/012004
R. Miteva
{"title":"Solar physics and space weather research at the Institute of Astronomy and NAO - BAS: Solar cycle trends of space weather drivers","authors":"R. Miteva","doi":"10.1088/1742-6596/2794/1/012004","DOIUrl":"https://doi.org/10.1088/1742-6596/2794/1/012004","url":null,"abstract":"\u0000 This report summarizes the available space weather catalogs hosted at https://catalogs.astro.bas.bg/, supported by the Institute of Astronomy and National Astronomical Observatory – Bulgarian Academy of Sciences. Namely solar flares, solar energetic protons, electron associated radio bursts and geomagnetic storms are considered. All these comprehensive records of analysed events are provided with an open access with the aim to be supported in the future. The lists cover solar cycles 23 and 24 (1996–2019) and contain the relevant parameters and their associated solar and/or interplanetary origin. The focus of this report is the solar cycle trend of solar and geomagnetic phenomena, indicating reduced productivity of either type of events in the last solar cycle and offsets with respect to the sunspot numbers.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"1988 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integral global fast terminal sliding mode control for LLC converters LLC 转换器的积分全局快速终端滑动模式控制
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2797/1/012034
Jinzhi Lu
{"title":"Integral global fast terminal sliding mode control for LLC converters","authors":"Jinzhi Lu","doi":"10.1088/1742-6596/2797/1/012034","DOIUrl":"https://doi.org/10.1088/1742-6596/2797/1/012034","url":null,"abstract":"\u0000 The complex characteristics of full-bridge LLC converters and PFM mode of operation result in a variety of operating modes and characteristic changes at different operating frequencies, thus increasing the difficulties in small signal characteristic analysis and good compensator design. In terms of control strategy, the traditional linear controller has limited response performance under various operating conditions such as input voltage ripple perturbation, input voltage mutation, and load mutation. To obtain greater transient response performance, stronger disturbance capability, and higher input stability of the system under different operating conditions, this paper proposes a new integral global sliding mode control law for LLC converters. In contrast to conventional control methods, the proposed control strategy exhibits enhanced dynamic response capabilities in the presence of load variations. It effectively mitigates jitter issues during steady-state operation, demonstrating a superior control performance.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"392 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dosimetric Evaluation of an Adaptive Planning Strategy for Implant Shift in HDR Prostate Brachytherapy 对 HDR 前列腺近距离放射治疗中植入物移位的自适应规划策略进行剂量学评估
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2799/1/012018
J. Wallace, M. Hanlon, Ryan L. Smith, Rick Franich
{"title":"Dosimetric Evaluation of an Adaptive Planning Strategy for Implant Shift in HDR Prostate Brachytherapy","authors":"J. Wallace, M. Hanlon, Ryan L. Smith, Rick Franich","doi":"10.1088/1742-6596/2799/1/012018","DOIUrl":"https://doi.org/10.1088/1742-6596/2799/1/012018","url":null,"abstract":"\u0000 The occurrence of significant implant shifts between CT simulation planning and first fraction delivery is a frequent challenge for HDR prostate brachytherapy treatment. Here, we present evidence supporting the viability of a first-order adaptation strategy as a viable alternative to the conventional practice of re-scanning and re-planning. Our findings underscore the potential of this approach to enhance workflow efficiency in HDR prostate brachytherapy.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"48 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141854023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation study on the road system of port collection and distribution in the harbor area 港区港口集疏运道路系统模拟研究
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012050
Jianbao Zhang, Tong Zhang, Linan Du, Zhenbao Li
{"title":"Simulation study on the road system of port collection and distribution in the harbor area","authors":"Jianbao Zhang, Tong Zhang, Linan Du, Zhenbao Li","doi":"10.1088/1742-6596/2791/1/012050","DOIUrl":"https://doi.org/10.1088/1742-6596/2791/1/012050","url":null,"abstract":"\u0000 This paper comprehensively considers the impact of both internal and external traffic environments on the collection and distribution road system in the harbor area. Utilizing Anylogic simulation software, we construct a test environment using Yulong Port’s collection and distribution scenario as a case study. The analysis examines the influence of changes in road construction and the growth of external traffic on the operational efficiency of the port’s road collection and distribution system. The results indicate that with the addition of new roads, the efficiency of car and freight vehicle operations improves, leading to a respective decrease in the average travel time within the system by 3.6% and 4.4%. However, under conditions where social traffic flow increases to 1.2 times, the average travel time of the traffic flow within the system significantly rises, and congestion occurs in the external traffic around the port. The findings of this research provide valuable decision-making insights for the construction of collection and distribution channels in port areas and the approval of governmental projects.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"41 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141702535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on applicability of mathematical model of pipe-soil interaction 管道与土壤相互作用数学模型的适用性研究
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012021
Yu Hou, Yuqing Liu, Chao Sun, Zhenyong Zhang, Tianwei Kong, Xiatong Wu, Zhaohan Yang, Wei Huang, Xiaoben Liu
{"title":"Study on applicability of mathematical model of pipe-soil interaction","authors":"Yu Hou, Yuqing Liu, Chao Sun, Zhenyong Zhang, Tianwei Kong, Xiatong Wu, Zhaohan Yang, Wei Huang, Xiaoben Liu","doi":"10.1088/1742-6596/2791/1/012021","DOIUrl":"https://doi.org/10.1088/1742-6596/2791/1/012021","url":null,"abstract":"\u0000 The applicability of the soil spring calculation model given in China’s standard SY/T 7403 “Code for strain-based design of oil & gas transmission pipelines” and GB/T 50470 “Seismic technical code for oil and gas transmission pipeline engineering” to large-diameter pipelines is not clear. In this paper, the soil spring calculation formulas recommended in the two standards are analyzed, and the corresponding finite element numerical simulation models are established. The applicability of the lateral and vertical soil spring models in the two standards is discussed. The results show that the calculation accuracy of the two standards needs to be improved, and the applicability is different for different pipe diameters and soil properties.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"88 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141690975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the body type of shaft spillway 竖井溢洪道体型研究
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012013
Shaojia Yang, Xiaoyu Liu, Jinfeng Wang, Hongbo Zhu
{"title":"Study on the body type of shaft spillway","authors":"Shaojia Yang, Xiaoyu Liu, Jinfeng Wang, Hongbo Zhu","doi":"10.1088/1742-6596/2791/1/012013","DOIUrl":"https://doi.org/10.1088/1742-6596/2791/1/012013","url":null,"abstract":"\u0000 In this paper, the influence of shaft spillway shape on its performance is studied by numerical simulation to improve its design and operation efficiency. The type of pressure slope section, the sensitivity of the radius of the turning section, and the optimal arrangement of the stilling pool are studied and analyzed. It is found that increasing the length of the pressure slope section can stabilize the flow in the pressure section of the tunnel. The deflection phenomenon can be reduced by increasing the radius of the turning section. The symmetrical arrangement of the stilling pool can improve the water flow pattern. Through numerical simulation, the paper provides some suggestions on the optimal design of the shaft spillway to improve its performance and efficiency.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"7 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced fluorescence emission of a single quantum dot in a porous silicon photonic crystal—plasmonic hybrid resonator 多孔硅光子晶体-等离子体混合谐振器中单个量子点的增强荧光发射
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2796/1/012021
E. Granizo, Irina Kriukova, Pedro Escudero-Villa, P. Samokhvalov, Igor Nabiev
{"title":"Enhanced fluorescence emission of a single quantum dot in a porous silicon photonic crystal—plasmonic hybrid resonator","authors":"E. Granizo, Irina Kriukova, Pedro Escudero-Villa, P. Samokhvalov, Igor Nabiev","doi":"10.1088/1742-6596/2796/1/012021","DOIUrl":"https://doi.org/10.1088/1742-6596/2796/1/012021","url":null,"abstract":"\u0000 Currently, much interest is attracted to investigating the potential of hybrid systems that exhibit plasmon-induced photoluminescence (PL) enhancement of quantum emitters in terms of optoelectronics and biosensing applications. The implementation of these systems based on photonic microcavities offers benefits due to a stronger localization of the field within the resonant cavity. Porous silicon is one of interesting materials for engineering such microcavities thanks to the simplicity of its fabrication and the possibility to embed emitters from the solution into a ready-made resonator. In this theoretical study, the fluorescence enhancement of a quantum dot (QD) in a hybrid system based on a porous silicon microcavity (pSiMC) and silver nanoplatelets (AgNPs) was investigated using finite element method (FEM) numerical simulations. For this purpose, infinite arrays were simulated by using a periodic unit cell. The pSiMC was designed as two λ/4 distributed Bragg reflectors with alternating refractive indices and a cavity layer of a double thickness between them. For comparison, simulations were also performed for an AgNP and a QD in a reference monolayer with a constant refractive index without a microcavity structure. The results show QD fluorescence enhancement in the AgNP/pSiMC hybrid system, mainly due to the higher excitation rate.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"6 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical simulation of structural optimization within a supersonic cyclone separator 超音速旋风分离器内结构优化的数值模拟
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012009
Zhenhua Zhai, Guanghui Chen, Chuanjun Di, Lehui Zhang
{"title":"Numerical simulation of structural optimization within a supersonic cyclone separator","authors":"Zhenhua Zhai, Guanghui Chen, Chuanjun Di, Lehui Zhang","doi":"10.1088/1742-6596/2791/1/012009","DOIUrl":"https://doi.org/10.1088/1742-6596/2791/1/012009","url":null,"abstract":"\u0000 Supersonic cyclone separation technology, as a new type of natural gas dewatering technology, utilizes the temperature drop generated by ultrahigh velocity fluid flow to condense the water vapor, thus accomplishing the goal of gas-liquid separation. At the input pressure of 8.48×104 Pa (G), the input temperature of 279.6 K, and the input water steam quality score of 5%, the flow fields and condensation characteristics were compared within the steeped, attached, five-curved three separator structures and the control group without the separator structure. The result shows that when the number of mahs of the ultrasonic spin separator of the ladder separator structure reached 1.51, the minimum pressure is −7.49×104 Pa, resulting in a temperature drop of approximately 100 K, and the flow field is most conducive to droplet condensation and growth; the maximum nucleation rate is 2.23×1023 kg−1·s−1, and the droplet diameter is 6.64×10−3μm.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"15 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141702473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on electromagnetic environment inside linear motor 直线电机内部电磁环境研究
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2791/1/012042
Yunfeng Li, Tianzan Su, Shanqiang Fu, Sansan Ding, Zhiyuan Tang
{"title":"Research on electromagnetic environment inside linear motor","authors":"Yunfeng Li, Tianzan Su, Shanqiang Fu, Sansan Ding, Zhiyuan Tang","doi":"10.1088/1742-6596/2791/1/012042","DOIUrl":"https://doi.org/10.1088/1742-6596/2791/1/012042","url":null,"abstract":"\u0000 In the maglev system, the long stator linear motor provides power for the train, and electromagnetic disturbance will be generated during the operation of the motor, which will interfere with other equipment. In this paper, the influence of linear motors on the electromagnetic environment inside the train is analyzed by the finite element method, and the magnetic field intensity inside the train under two different working conditions is obtained by software simulation. It is found that under normal working conditions, the magnetic field radiation emission of the linear motor meets the requirements. Under phase absence conditions, the overall magnetic field intensity on the left side of the car body, the center of the axis, and the right side increases by 12 dB, 17 dB, and 19 dB respectively, so it is necessary to avoid such a situation. This paper further proposes that the external radiation emission of the vehicle can be improved through shielding.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"88 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141697261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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