Results 281 to 290 of about 231,069 (352)
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Modelling nasal airflow coefficients: an insight into the nature of airflow
Rhinology journal, 2020There has been considerable discussion and conflicting views regarding the presence of laminar or turbulent flow within the nose. The aim of this study was to investigate how the modelling of variable flow coefficients can assist in the evalua- tion of the characteristics of flow in the resistive segments of the nose.A comparison was made between the ...
G, Oâ Neill, N S, Tolley
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, 2020
Dust pollution produced in tunneling process can seriously threaten safety in construction and the workers’ occupational health. Aiming at improving the construction environment in the tunnel, this study combined numerical simulation and field ...
Lidian Guo +8 more
semanticscholar +1 more source
Dust pollution produced in tunneling process can seriously threaten safety in construction and the workers’ occupational health. Aiming at improving the construction environment in the tunnel, this study combined numerical simulation and field ...
Lidian Guo +8 more
semanticscholar +1 more source
Numerical study on airflow temperature field in a high-temperature tunnel with insulation layer
, 2020Comprehensive understanding of the airflow temperature field in a high-temperature tunnel is critical for the deep underground engineering project. In this paper, we establish a two-dimensional axisymmetric model coupling the convective-conduction heat ...
Fangchao Kang +2 more
semanticscholar +1 more source
Journal of Cleaner Production, 2018
In order to investigate the influences of turbulent airflow disturbance from coal cutting on pollution characteristics of coal dust, the airflow migration and the coal dust dispersion was numerically simulated.
Biao Sun, Weimin Cheng
exaly +2 more sources
In order to investigate the influences of turbulent airflow disturbance from coal cutting on pollution characteristics of coal dust, the airflow migration and the coal dust dispersion was numerically simulated.
Biao Sun, Weimin Cheng
exaly +2 more sources
Airflow Determination in a Horizontal Laminar Airflow Operating Room
IEEE Transactions on Biomedical Engineering, 1974The criteria used in the selection of a laminar airflow unit are presented. The unit acquired and installed is described. The air-velocity profiles are shown for the empty and occupied operating room, and the method for their determination is described. The study of the velocity profiles indicated the unit operated to the manufacturer's description and
J B, Hart, M L, French, M A, Ritter
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The relationship of peak inspiratory airflow to subjective airflow in the nose
Clinical Otolaryngology, 1990A prospective study of 145 patients presenting for nasal surgery was designed to examine the relationship of peak nasal inspiratory airflow (PNIF) to subjective nasal airway patency (SNA). Patients admitted for surgery filled in a self-assessment Questionnaire and PNIF measurements were taken. Six weeks post surgery the procedure was repeated.
M S, Morrissey, T, Alun-Jones, J, Hill
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Environmental Research, 2020
Forced-draft biomass stoves improve the pollutant emission performance of biomass combustion. The parameters of supply airflow and its distribution between primary air (PA) and secondary air (SA) have a significant effect on the performance of this stove
Mengsi Deng +3 more
semanticscholar +1 more source
Forced-draft biomass stoves improve the pollutant emission performance of biomass combustion. The parameters of supply airflow and its distribution between primary air (PA) and secondary air (SA) have a significant effect on the performance of this stove
Mengsi Deng +3 more
semanticscholar +1 more source
, 2020
This paper explores the longitudinal distributions of airflow velocity and convective heat transfer coefficient (CHTC) characterizing duct ventilation in a construction tunnel of geothermal area.
Chen Qi +4 more
semanticscholar +1 more source
This paper explores the longitudinal distributions of airflow velocity and convective heat transfer coefficient (CHTC) characterizing duct ventilation in a construction tunnel of geothermal area.
Chen Qi +4 more
semanticscholar +1 more source
Applied Energy, 2019
In this paper, we numerically investigate thermal characteristics and performances of a triple-glazed airflow window, by comparison to conventional double and triple-glazed ones.
Ghislain Michaux, P Salagnac
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In this paper, we numerically investigate thermal characteristics and performances of a triple-glazed airflow window, by comparison to conventional double and triple-glazed ones.
Ghislain Michaux, P Salagnac
exaly +2 more sources
, 2020
Rotor unmanned aerial vehicles (UAVs) for pesticide spraying have been widely used in China during the past three years. In order to improve the effectiveness of pesticide application and reduce environmental risk caused by spray drift, it is important ...
Hao Zhang +5 more
semanticscholar +1 more source
Rotor unmanned aerial vehicles (UAVs) for pesticide spraying have been widely used in China during the past three years. In order to improve the effectiveness of pesticide application and reduce environmental risk caused by spray drift, it is important ...
Hao Zhang +5 more
semanticscholar +1 more source