Results 1 to 10 of about 225,195 (153)

Hereditary Mathematical Model of the Dynamics of Radon Accumulation in the Accumulation Chamber

Mathematics, 2023
Mathematical modeling is used to study the hereditary mechanism of the accumulation of radioactive radon gas in a chamber with gas-discharge counters at several observation points in Kamchatka.
Dmitrii Tverdyi, Evgeny Makarov, Roman Parovik   +2 more
doaj   +4 more sources

Research of the process of radon accumulation in the accumulating chamber taking into account the nonlinearity of its entrance [PDF]

E3S Web of Conferences, 2020
The paper presents a mathematical model of radon accumulation in a chamber, which takes into account the hereditary properties of the environment in which radon migrates, and also uses a nonlinear function that is responsible for the mechanisms of radon ...
Tverdyi Dmitriy, Parovik Roman, Makarov Evgeniy, Firstov Pavel   +3 more
doaj   +2 more sources

Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler

Energies, 2022
The performance of the air-cooler in refrigeration systems plays a key role in their energy efficiency. Here, the plenum-chamber coefficient was defined to investigate a possible way of enhancing the refrigeration coefficient that reflects the efficiency
Bin Liu, Shengqiang Shi, Yongshan Liu, Rachid Bennacer, Aiqiang Chen, Panagiotis E. Theodorakis   +5 more
doaj   +3 more sources

Sampling strategies using the “accumulation chamber” for monitoring geological storage of CO2 [PDF]

International Journal of Greenhouse Gas Control, 2012
Fundación Ciudad de la Energía (CIUDEN) is carrying out a project of geological storage of CO2, where CO2 injection tests are planned in saline aquifers at a depth of 1500 m for scientific objectives and project demonstration. Before any CO2 is stored, it is necessary to determine the baseline flux of CO2 in order to detect potential leakage during ...
J Elio, Marcelo F Ortega, Luis Felipe Mazadiego   +2 more
exaly   +3 more sources

Influence of the accumulation chamber insertion depth to measure surface radon exhalation rates

Journal of Hazardous Materials, 2020
<p>A common method to measure radon exhalation rates relies on the accumulation chamber technique. Usually, this approach only considers one-dimensional gas transport within the soil that neglects lateral diffusion. However, this lateral transport could reduce the reliability of the method.
I Gutiérrez-Álvarez, J L Guerrero, J E Martin   +2 more
exaly   +4 more sources

A Novel Method for Deposit Accumulation Assessment in Dry Etching Chamber

IEEE Transactions on Semiconductor Manufacturing, 2019
Particle contamination in the dry etching chamber is one of the major issues in the semiconductor manufacturing. Particles on the wafer surface may cause wafer defects and yield loss. Therefore, particle monitoring is important to support contamination control and predictive maintenance activities.
Pin Li, Xiaodong Jia, Yoshito Kamaji
exaly   +2 more sources

Numerical Simulation Study on Hydrogen Accumulation and Explosion in Radioactive Gas Decay Chamber

ACS Omega
During the operation of the reactor, a mixture of oxygen, hydrogen, nitrogen, and radioactive gases is produced and stored under pressure in a decay chamber. This review uses numerical simulation methods to study the accumulation and explosion of hydrogen in these mixed gases during storage.
Shutang Sun, Yuanyuan Li, Ying Ji, Yeming Zhu, Dong Zhao, Yiren Lian, Yu Rong, Jin Yan, Hongchao Sun, Guoqiang Li   +9 more
doaj   +3 more sources

Design of a low-cost gas accumulation chamber for general purpose environmental monitoring

Smart Agricultural Technology
The need for accurate measurement of CO2 emissions from surfaces arises from various fields, particularly in precision agriculture, irrigation water management, wastewater management, volcanology, geothermal exploration, environmental and climate ...
Domenico Longo, Serena Guarrera, Delia Ventura, Emanuele Cerruto, Salvatore Roberto Maugeri, Gaetano Giudice   +5 more
doaj   +3 more sources

Simultaneous measurement of radon exhalation rate and CO2 flux based on accumulation chamber technique with a closed-loop system

Nuclear Engineering and Technology
Carbon dioxide is one of the most important greenhouse gases that contribute to global warming. Radon exhalation rate is an important factor in evaluating environmental radon levels.
Haibo Yi, Chenxi Zu, Jiale Sun, Jiulin Wu, Huiying Li, Zhipeng Liu, Hongbo Xu, Shicheng Luo, Xianfa Mao, Xinyue Yang, Feng Xiao, Hongzhi Yuan, Yanliang Tan   +12 more
doaj   +3 more sources

Open Access Accumulation Chambers SAGE (Surface-Air Gas Exchange)—DIY Philosophy [PDF]

Sensors (Basel)
Gas exchange between soil or water surfaces and the atmosphere is one of the main sources of greenhouse gas production and absorption. Faced with global climate change and increasing atmospheric concentrations of these gases, significant scientific efforts are being made to monitor this exchange using various techniques, including closed chambers ...
Bartosz, Marian, Busitllo, Vincent
europepmc   +3 more sources