Academic literature on the topic 'Base tower station'

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Journal articles on the topic "Base tower station"

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Huang, Huan, Yan Hong Xiao, Bin Li, et al. "Electric field characteristics of shared towers and electric field distribution characteristics near 5G base stations." Journal of Physics: Conference Series 2384, no. 1 (2022): 012030. http://dx.doi.org/10.1088/1742-6596/2384/1/012030.

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Abstract With the continuous promotion of domestic 4G network construction and the gradual arrival of 5G networks, the requirements of mobile communication networks on capacity and coverage are constantly improving, and the number of communication base stations is also increasing. Therefore, the “shared tower” with the function of a communication base station added to the existing high-voltage transmission line tower is becoming a new resource-sharing mode. There is no systematic study on the installation location of the shared tower base station on the high-voltage tower, which is not conduci
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Vinogradov, A. V., and O. N. Pushchak. "Application of electronic total stations for survey of metal towers designs of cellular communications." Geodesy and Cartography 922, no. 4 (2017): 2–6. http://dx.doi.org/10.22389/0016-7126-2017-922-4-2-6.

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The availability and stability of cellular communication can be achieved with areas coverage by base stations. Base station cellular (metal tower) is a complex and massive engineering structure which is usually installed on different buildings. Weight of tower with equipment exceeds 1000 kg. For security purposes of objects with installed cellular base stations you need constantly determine the operating characteristics of towers. One of the important characteristics is the deviation of the tower from the vertical. In the regulations for the operation of towers various ways of determining the
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Yang, Zhichao, Dong Dang, Xu Cheng, et al. "Analysis of Electromagnetic Radiation of Mobile Base Stations Co-located with High-Voltage Transmission Towers." Symmetry 15, no. 6 (2023): 1252. http://dx.doi.org/10.3390/sym15061252.

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This paper presents the analysis of electromagnetic radiation of mobile base stations co-located with high-voltage transmission towers. Although the layout of power poles and towers is uniform and symmetrical, the electromagnetic field radiated to the outside world is asymmetric. Field measurements were conducted in different co-located base station scenarios, and the field strength results in both the vertical and horizontal directions were analyzed in depth. Then, the ray tracing simulation method was used to obtain the electromagnetic field distribution characteristics for the 5G base stati
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Xi, Ruijie, Weiping Jiang, Wei Xuan, et al. "Performance Assessment of Structural Monitoring of a Dedicated High-Speed Railway Bridge Using a Moving-Base RTK-GNSS Method." Remote Sensing 15, no. 12 (2023): 3132. http://dx.doi.org/10.3390/rs15123132.

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At present, high-precision GNSS positioning technology is an important means to monitor the health of bridges and other structures. However, the GNSS signal of reference stations and monitoring stations used for bridge monitoring can easily be blocked by bridge towers, vehicles, or other objects, resulting in low positioning accuracy and insufficient availability of GNSS, which affects the effectiveness of bridge structural health monitoring. Therefore, according to the characteristics of bridge structure, this paper proposes to take the bridge tower monitoring station as a moving-base station
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Agung, Rahmad Hidayat, Gernowo Rahmat, and Sugiharto Aris. "Geographic Information System Shortest Route Recommendation for Base Transceiver Station Location in Semarang Regency." International Journal of Mathematics and Computer Research, no. 05 (May 14, 2025): 5178–86. https://doi.org/10.5281/zenodo.15407974.

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Base transceiver station (BTS) towers serve to connect mobile devices with operator networks by sending and receiving radio signals to and from communication devices. The strength of the received signal is influenced by the distance between the BTS tower location and the device, the farther the weaker. In addition, the quality of the signal is affected by disturbances on the BTS tower itself such as infrastructure damage, blackspots, and extreme weather conditions. There are 288 BTS towers scattered in Semarang Regency, owned by telecommunication tower providers and mobile operator networks. E
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Marsia, Novia Santi, and Chandra Afriade Siregar. "STUDI KEKUATAN MENARA BTS (BASE TRANSCEIVER STATION) PADA MENARA SST TINGGI 72M TIPE GREENFILED." Sistem Infrastruktur Teknik Sipil (SIMTEKS) 4, no. 2 (2024): 266–84. https://doi.org/10.32897/simteks.v4i2.3950.

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The development of communication technology in Indonesia has grown quite rapidly. The increasing needs of the community for telecommunications make cellular operators continue to improve services. To increase network capacity can be done by adding devices on telecommunication towers. The addition of devices on telecommunication towers brings consequences in the form of increased loads that must be carried by the telecommunication tower. The stability check of a 4-foot SST-type BTS tower with a height of 72m refers to the EIA/TIA-222-G standard and uses the MS Tower V6 program. The check includ
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Benyamin, Sam, Nachrowie Nachrowie, and Wahyu Dirgantara. "Purwarupa Sistem Monitoring Kemiringan Menara Base Transceiver Station (BTS) Berbasis Arduino sebagai Solusi Maintenance Menara." JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) 4, no. 2 (2022): 85–92. http://dx.doi.org/10.26905/jasiek.v4i2.9174.

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Menara Base Transceiver Station (BTS) is a telecommunications station whose main function is to facilitate wireless communication between communication devices (clients) and network operators. BTS towers are usually built in densely populated residential areas, due to distributing telecommunications networks. Because it was built in a densely populated settlement, it is necessary to pay attention to the feasibility maintenance of the BTS tower. BTS tower maintenance is intended so that BTS towers can work optimally and reduce the risk of collapsing. The prototype will be made with several comp
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Smart, C. R. "Wellington Central Police Station base isolation maintenance." Bulletin of the New Zealand Society for Earthquake Engineering 46, no. 3 (2013): 141–56. http://dx.doi.org/10.5459/bnzsee.46.3.141-156.

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Wellington Central Police Station was built in the late 1980s. Its 10-storey tower block featured robust X-bracing around the perimeter and strong floor diaphragms to distribute earthquake actions amongst the perimeter frames, thus making it extremely stiff. To provide the ductility required by the 1984 Loadings Standard, the tower block was supported on a base isolation system that allowed up to 400 millimetres of movement in any horizontal direction.
 This paper describes investigations into the continuing serviceability of the base isolation parts, and the remedial maintenance required
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Rifai, Muh Husyain. "IMPACT OF THE EXISTENCE OF THE BTS TOWER (BASE TRANSCEIVER STATION) IN JATIROTO DISTRICT, WONOGIRI REGENCY YEAR 2021." Journal of Geography Science and Education 4, no. 1 (2022): 45. http://dx.doi.org/10.32585/jgse.v4i1.2551.

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Noviasari, Anggi. NIM. 1751100010. Impact of the Existence of BTS Tower (Base Transceiver Station) in Jatiroto District, Wonogiri Regency in 2021. Supervisor : Muh Husyain Rifai,S.Pd,M.Pd. and Ary Wijayanti, S.Pd, M.Pd. Essay. Geography Education Study Program, Faculty of Teacher Training and Education, University of Veterans Bangun Nusantara, Sukoharjo. 2021. This study aims to determine: (1) the distribution and affordability of the BTS tower signal (2) The impact of the existence of the BTS tower on the education of students at SMKN 1 Jatiroto (3) The impact of the existence of the BTS towe
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Li, Lin, Tiantian Li, Yong Liu, Xinyi Song, Qixiang Yin, and Hongfei Chang. "Seismic Performance Analysis of the Valve Hall‐Valve Tower‐Bushing System of a ±800kV Converter Station." ce/papers 8, no. 2 (2025): 982–87. https://doi.org/10.1002/cepa.3187.

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AbstractThe valve hall and the internal electrical equipment are key components to ensure the proper conversion and transmission of power. Modal analysis was conducted on the valve hall frame system, valve hall‐valve tower system, valve hall‐bushing system, and valve hall‐valve tower‐bushing system by ABAQUS. Nonlinear time‐history analysis was performed on both the valve hall frame system and the valve hall‐valve tower‐bushing system. The results reveal that valve towers and bushings alters the structure's mode shapes and frequencies. Compared to the valve hall frame, a significant reduction
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Books on the topic "Base tower station"

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Jan, DeWaters, and National Risk Management Research Laboratory (U.S.), eds. Pollution prevention opportunity assessment: United States Naval Base Norfolk Naval Air Station : project summary. U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 1995.

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Book chapters on the topic "Base tower station"

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Barela, Mary Claire, Maria Theresa Cunanan, Cedric Angelo Festin, et al. "Connecting Communities Through Mobile Networks: A Case Study of Implementing Community Cellular Networks in the Philippines." In Introduction to Development Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-86065-3_21.

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AbstractCommunity networking can provide telecommunications in unserved and underserved areas where markets fail to deliver adequate Internet service due to high risk of investment and limited returns. This has left an estimated 400 million people worldwide in areas uncovered by mobile networks. In much of the Philippines, with just under 70% mobile phone penetration, unserved communities have limited connectivity options. We describe the CoCoMoNets (Connecting Communities through Mobile Networks) project implemented by the University of the Philippines Diliman (UPD) and international researchers, which delivered basic mobile telephony to remote rural barangays through community cellular networks. The core technology is a low-power, low-cost GSM base station operating at a fraction of the capital and recurring costs of traditional equipment. Deploying Filipino community networks presented unique challenges requiring extensive stakeholder coordination, including an MNO, regulators, local governments, local cooperatives, and end users. The project team encountered challenges including spectrum sharing, tower licensing, geographical remoteness, maintenance difficulties, local politics, and community relations. This chapter documents the project’s experiences and challenges in testing the community cellular model in the real world. After 2 years of operation, the researchers summarize their learnings to contribute to the development of future approaches in delivering sustainable last-mile communication access.
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Wang, Lin, Xiang Yue, and Jinglin Peng. "Modeling and Simulation of a Tower-of-Hanoi-Playing Robot Station Based on RobotStudio." In Advances in Mechanical Design. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7381-8_92.

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Shabani, Amirhosein, and Amir Hossein Karimi. "Operational Modal Analysis and Finite Element Model Updating of the Naillac Tower in Rhodes, Greece." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-69626-8_112.

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AbstractMitigating vulnerabilities of cultural heritage assets prevents damage from extreme weather, encourages sustainable restoration practices that cut carbon emissions, and yields long-term cost savings, all while conserving the legacy of historical constructions. Developing a precise numerical model that closely simulates the actual structure is a crucial component of a vulnerability assessment methodology. The objective of this study is to present a finite element (FE) model updating of a historical masonry arch with a corner tower in Rhodes, Greece. The Naillac tower, as part of the medieval city of Rhodes, is recognized as a UNESCO World Heritage site. Three-dimensional (3D) documentation was conducted using digital cameras, 3D laser scanners, drones, and total stations. These tools were chosen for their effectiveness in capturing the intricate architecture of the structure while expediting the documentation process. A 3D dense point cloud was generated, forming the basis for the subsequent development of a 3D FE model. On the other hand, operational modal analysis (OMA) was conducted based on the ambient vibration testing (AVT) data using accelerometer sensors to define the frequency values and corresponding mode shapes of the structure. The material properties of the FE model are calibrated to match the modal properties of the FE model with those recorded experimentally. Finally, the updated mechanical properties of the stone masonry for different parts of the structure were presented. Significant variations exist between the calibrated material properties and those assumed from empirical equations, underscoring the necessity for model calibration based on OMA.
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Zhao, Shuang, and Xianhong Zhang. "Design Wind Loads for Transmission Towers with Cantilever Cross-Arms Based on the Effective Static Load Distribution Method." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-4698-2_139.

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Meti, Ashok, and Swapnil Malipatil. "Enhancing seismic resilience of telecommunication tower: By linear static approach for without viscous damper." In Deep Science Publishing. Deep Science Publishing, 2024. http://dx.doi.org/10.70593/978-81-981367-9-4_2.

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While telecommunication towers are crucial components of modern telecommunication networks, their capability to withstand seismic loading is still a major issue, especially in earthquake-prone areas. Traditional seismic performance enhancement methods usually aim at the use of viscous dampers to dissipate ground motions. Nevertheless, the installation and maintenance of such dampers can be arduous and thus, expensive procedures. A linear static analysis allows the use of alternate strategies for the seismic resilience of towers that includes increases in structural stiffness, bracing systems, or mass modification of towers instead of providing additional energy dissipation motors. Emphasis will be placed on structural modification of the system - such as bracing, mass distribution, and base reinforcement optimization - which will lead to the identification of low-cost measure solutions for improved tower stability under seismic loads. The linear static method is deployed to model these modifications and to carry out the assessment of their ability to improve the towers' movement reduction and tension of the internal parts. According to the simulations, these non-damper-based reinforcement methods are reliable means to ensure better seismic performance even for a specified geometry of a certain tower. These breakthroughs have practical applications in cost-saving eco-friendly seismic reinforcement of telecommunication towers, which ensures a safer and more resilient infrastructure.
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Huang, Yi, Diqiu Lu, Dabin Xu, and Guilin Du. "Design of Intake Tower Structure Based on Elastic Stress Diagram Method." In Advances in Transdisciplinary Engineering. IOS Press, 2024. http://dx.doi.org/10.3233/atde240690.

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In the building of hydro-power station, the inlet tower structure of the spillway tunnel is an important building to ensure the realization of the flood discharge function of the hydro-power station. The tower inlet is a tower-shaped junction against the bank slope. The shaft type water inlet is a gate arranged in the shaft, which is generally suitable for the part of the bank slope is slow and the inlet section has good conditions for forming holes. In this project, the slope of the water inlet is steep and the topographic elevation is low. If the shaft intake is used, there is no condition for the layout of the shaft, and the position of the shaft is close to the left dam abutment, which conflicts with the layout of the dam, so the inlet type is chosen as the tower type. In order to study the rationality and seismic resistance of the design of the intake tower of a hydro-power station preferably, the numerical simulation of the intake tower is carried out based on the finite element analysis method. At the same time, the vertical stress and maximum principal stress of the typical position of the intake tower under two working conditions are given. The calculation results show that the stability of the intake tower is good and the design of the intake tower is reasonable, which provides a scientific basis for the design and construction of the intake water tower and similar research.
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Meti, Ashok, and Swapnil Malipatil. "Seismic resilience enhancement of telecommunication tower: A linear static analysis with viscous damper." In Deep Science Publishing. Deep Science Publishing, 2024. http://dx.doi.org/10.70593/978-81-981367-9-4_3.

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Telecommunication towers are always exposed to seismic activity, which jeopardizes essential communication networks both during and after earthquakes. This paper presents an analytical study on the effect of incorporation of viscous dampers on seismic performance of telecommunication towers, keeping linear static analysis into focus. The investigation comprises the evaluation and comparison of base shear, story drift, and story displacement of structures with and without viscous dampers. Generally, base shear-the total horizontal force from seismic action at the base of the tower-is the most important indication of the structural demand. Story displacement and story drift-presently representing the relative movement between two consecutive floors-are studied for determining whether structure flexibility and potential for damage exist. The results show that the addition of viscous dampers effectively reduces story displacement and drift and efficiently dissipates seismic energy while lowering the structure's response. Dampers enhance seismic resilience through the bound deformations and forces that help thereby; therefore, in seismic zones, the towers of telecommunication communication towers operational dependability is extended. This article contributes towards realizing improvement in structures for the telecommunication industry in a safer and more functional condition during earthquakes.
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Liu, Chengzhe, Congxin Lin, Mingyu Han, et al. "Research on Wind Resistance of Large-Span Cable-Stayed Bridges with Shaped Towers." In Advances in Transdisciplinary Engineering. IOS Press, 2024. http://dx.doi.org/10.3233/atde240694.

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The main span of Shenzhen Chishi River Bridge is a 256m single-tower double cable-stayed steel box girder cable-stayed bridge. Considering the regional culture, livelihood characteristics, architectural landscape and other factors of the Shenzhen-Shantou area, the overall curve of the cable-stayed tower adopts the “carp” shape similar to the curvature of a fish’s belly, and the cross-section adopts the arched “dragon gate”-shaped cross-section. The heteromorphic tower shape is unique, and the cross-section construction and stress are more complex; based on local customs and folklore, to put forward the design concept of “Fish Leap Dragon Gate” there are few cases in the country. Firstly, the design key technology of the bridge tower is introduced. The simulation analysis of the load-bearing capacity of the tower is carried out. Then, the tower’s static and dynamic wind resistance is investigated through the finite element analysis and the wind tunnel test of the tower’s self-supporting state air-elastic model. The results show that the tower does not have considerable vortex resonance and chirp vibration under crosswind, and the amplitude of shaking vibration is small, which has good wind resistance performance and can provide a reference for the design of similar bridges and towers.
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Pinheiro, Fred Sizenando Rossiter, Gutembergue Soares da Silva, Marcio Eduardo da Costa Rodrigues, and André Pedro Fernandes Neto. "Non Ionizing Radiation in Urban Areas: Modeling of Electric Field Intensity from TV Broadcasting Using Multivariate Statistics Regression." In Eyes on health sciences V.01. Seven Editora, 2023. http://dx.doi.org/10.56238/eyohsc1-074.

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The Electric Field Intensity is one of the fundamental parameters to assess the exposure of human beings to Non-Ionizing Radiation (NIR). Although the major concern of environmental control bodies is with mobile telecommunication systems, this work highlights the attention which should also be given to the radiation emitted by television broadcast towers, which utilize higher power levels with continuous emissions.Measurements of downlink far electric field intensity with frequency ranging from 30 MHz to 3 GHz were made in a survey of 160outdoor points spread across all the 170 km2 area of Natal (a city of about 853.000inhabitants in northeast Brazil). The results obtained indicate that in 73.6% of the sampled outdoor points, the highest downlink electric field intensitiesmeasured were originated from TV broadcasting services, compared to 20.1% from Mobile SystemsTowers, 6.3% from Frequency Modulated Broadcasting and 0% from WLAN (IEEE 802.11bg). Based on these findings, a model is presented to estimate the intensity of the mean electric field at any given point of the city’s urban area generated by TV radiation emissions at VHF and UHF bands. Four distinct areas of the city were considered, basically adjusted to the azimuths related to the main tower concentration place. The modeling was done using the Statistical Multivariate Regressiontechnique, the Electric Field Strength was the dependent variable, the independent variables were the Distances of points to the transmission towers. Database was used with samples of measured values of Electric Field and their Distances to the TV transmission towers. The solution reached to estimate the electric field can be adapted for use in other cities. Detailed mapping of the electric field intensitiesmayensurebetter preventive conditions to monitor the degree of NIR exposurein each area and simplify evaluation procedures for the licensing of telecommunication stations.
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Foti, Dora, Mariella Diaferio, Nicola Ivan Giannoccaro, and Salvador Ivorra. "Structural Identification and Numerical Models for Slender Historical Structures." In Civil and Environmental Engineering. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9619-8.ch007.

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In the present chapter the theoretical basis of different methods developed for the calibration of FEMs are discussed. In general, Model Updating techniques are based on the use of appropriate functions that iteratively update selected physical properties (characteristics of the materials, stiffness of a link, etc.). In this way the correlation between the simulated response and the target value could improve if compared to an initial value. The FE model thus obtained can be used for a detailed structural analysis with a great confidence. The technique described in the first part of the chapter is applied to the evaluation of the structural properties of the tower of the Provincial Administration Building in Bari (Italy).The final purpose is to predict the performance of the tower to different combinations of static and dynamic loads, i.e. earthquakes or other induced vibrations. Ambient vibration tests have been performed on the above mentioned tower with the aim of determining its dynamic response and developing a procedure for modeling this building (Foti et al., 2012a). The Operation Modal Analysis (OMA) has been carried out both in the frequency domain and in the time domain to extract the dominant frequencies and mode shapes of the tower.
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Conference papers on the topic "Base tower station"

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Nikolovski, Srete, Hrvoje Glavaš, and Simon Fortin. "Simulation and Analysis of a Lighting Strikes to GSM Base Transmission Station Tower." In 1992 International Symposium on Electromagnetic Compatibility. IEEE, 1992. https://doi.org/10.1109/isemc.2002.10792291.

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Nikolovski, Srete, Hrvoje Glavaš, and Simon Fortin. "Simulation and Analysis of a Lighting Strikes to GSM Base Transmission Station Tower." In 2002_EMC-Europe_Sorrento. IEEE, 2002. https://doi.org/10.23919/emc.2002.10879929.

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Zhou, Qiang, Jinping Zhang, Chengjia Bao, Guodong Wu, Ruixiao Zhang, and Yongrui Zhang. "Study on Start-up and Operation Characteristics of Lava Tower Photothermal Power Station in Large-Scale New Energy Base." In 2024 China International Conference on Electricity Distribution (CICED). IEEE, 2024. http://dx.doi.org/10.1109/ciced63421.2024.10754070.

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Weixin, Yuan, Gao Wei, Wang Wei, Gao Chunsong, and Liu Chao. "Study on Steel-Shell Concrete Composite Section Bridge Tower Based on Solid Finite Element Analysis : A Case Study of The Guanyinsi Yangtze River Bridge." In IABSE Congress, San José 2024: Beyond Structural Engineering in a Changing World. International Association for Bridge and Structural Engineering (IABSE), 2024. https://doi.org/10.2749/sanjose.2024.0321.

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<p>Although steel-shell concrete composite section bridge towers are receiving increasing attention and favour in the construction of large bridges, there is still a lot of insufficient research on their construction and structural behaviour. address the research gaps in this field, this paper focuses on the study of Guanyinsi Yangtze River Bridge main tower, which has a height of 262 meters. The paper establishes a reasonable finite element model through solid finite element analysis software. Finite element analysis is performed using solid finite element modelling, considering its own
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Yarbrough, Mark E., and Lon C. Brouse. "Cooling Tower Blowdown Reduction at Palo Verde Nuclear Generating Station." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93650.

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Abstract Palo Verde Nuclear Generating Station, operated by Arizona Public Service Company, is comprised of three 1,270 MW pressurized water reactors. The plant site is 55 miles west of Phoenix, Arizona, in the Sonoran desert. The Water Reclamation Facility is an on-site, 90 million gallon per day tertiary treatment plant, that receives secondary treated sewage from the cities of Phoenix and Tolleson. The plant operating license requires zero water discharge from the site. Evaporation ponds collect and detain tower blowdown and other non-radioactive wastewater streams. Original guidelines for
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Guo, Xinyan, Yizhou Wang, Houquan Chen, and Haochen Hua. "Optimal Layout of Tower Solar Thermal Power Station Based on Ray Tracing Method." In 2024 IEEE International Conference on Energy Internet (ICEI). IEEE, 2024. https://doi.org/10.1109/icei63732.2024.10917112.

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Hoots, J. E., and G. A. Crucil. "Role of Polymers in the Mechanisms and Performance of Alkaline Cooling Water Programs." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86013.

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Abstract A continuing trend in industrial cooling water systems is operation under increasingly severe conditions (e.g. higher alkalinity, temperature, hardness, and pH). To maintain the desired level of scale and corrosion inhibition, use of treatment programs specifically designed to operate under those stresses is necessary. Evaluation of two non-chromate programs, based on the all-organic and alkaline zinc formulations, will be presented. The data and concepts described in this paper were obtained from three sources: static laboratory tests, dynamic process simulation (Pilot Cooling Towers
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Munteanu, C., V. Topa, T. Muresan, and A. M. Costin. "Electromagnetic Interferences Between High Voltage Power Lines and Radio Base Station Antennas Mounted on High Voltage Towers." In 2004_EMC-Europe_Eindhoven. IEEE, 2004. https://doi.org/10.23919/emc.2004.10805896.

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Hann, William M. "The Effect of Acrylate-Based Polymers on Deposit and Corrosion Control in Cooling Water." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86015.

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Abstract The role of low molecular weight acrylate-based and other polymers in moderating fouling and corrosion in both phosphate and zinc treatment programs is described. Comparisons are made of the best commercially available phosphate stabilizing polymers using both static beaker tests and pilot cooling tower studies. The strengths and weaknesses of the commercial phosphate stabilizing polymers are discussed. A brief discussion is also presented relating inhibitor composition and performance. It is hypothesized that the presence of both strong acid and weak acid functional groups built into
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Eun, WonJong, JiSoo Sim, SangWoo Lee, and SangJoon Shin. "Advancement of the SNUF Blade Design through Flap Configuration Parametric Study and Optimization Framework." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12292.

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This paper focused on improving a small-scaled prototype of a helicopter rotor blade with a flap-driving mechanism termed as the Seoul National University Flap (SNUF). The design of SNUF included realizing vibratory load reduction. First, a multibody structural dynamics analysis was performed to determine the influence of the flap dimension and location within the rotor blade with respect to hub vibratory load reduction. This process selected a specific blade configuration that maximized vibration reduction capability. Then, a numerical optimization technique was applied to improve the cross-s
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Reports on the topic "Base tower station"

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Kress, Marin, Patricia DiJoseph, Morgan Johnston, et al. A method for evaluating Automatic Identification System (AIS) coverage on select inland waterways in 2020 and 2021 : Upper Mississippi River, Illinois River, and Ohio River. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47839.

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The Automatic Identification System (AIS) shares vessel position information for navigational safety purposes. AIS broadcasts are received by other ships and terrestrial stations; however, in some areas there is no, or low, terrestrial station coverage to receive broadcasts. The US Army Corps of Engineers (USACE) developed an Online Travel Time Atlas (OTTA) to process AIS data and derive a transit count. This study examined OTTA output from 2020 and 2021 to identify areas of high or low AIS coverage along the Upper Mississippi, Illinois, and Ohio Rivers. Segments with a yearly average of two o
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Ray, Laura, Madeleine Jordan, Steven Arcone, et al. Velocity field in the McMurdo shear zone from annual ground penetrating radar imaging and crevasse matching. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42623.

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The McMurdo shear zone (MSZ) is strip of heavily crevassed ice oriented in the south-north direction and moving northward. Previous airborne surveys revealed a chaotic crevasse structure superimposed on a set of expected crevasse orientations at 45 degrees to the south-north flow (due to shear stress mechanisms). The dynamics that produced this chaotic structure are poorly understood. Our purpose is to present our field methodology and provide field data that will enable validation of models of the MSZ evolution, and here, we present a method for deriving a local velocity field from ground pen
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