The Investigation of People Using Air Movement Actively in Summer in Hot-Humid Area of China

2011 ◽  
Vol 121-126 ◽  
pp. 602-606 ◽  
Author(s):  
Qian Ni Liu ◽  
Yu Feng Zhang ◽  
Qing Lin Meng

This paper is focused on the relationship between the motivations for people to actively use air movement and indoor climates, with an aim to determine the preferred levels of air movement for the occupants of naturally ventilated buildings in hot and humid climates in China. Based on 429 questionnaires collected in a background survey, 29 college students were chosen to join in the transverse survey. Totally 247 sets of raw data in 5 weeks were obtained. Primary results show that the main motivation of opening window changed from “fresh air” to “cool room and body” as the summer coming. The proportion of wanting more air movement increased as ET* rose, and the ambient and preferred air velocity increased linearly with ET* too.

Author(s):  
A.S. Zelinskiy ◽  
G.A. Yakovlev

In this paper, a simulation of the distribution of radon progeny over the height of the atmosphere, depending on the amount of turbulent mixing and the vertical air velocity, is presented. The obtained results are compared with the change in the activity ratio of Bi-214/Pb-214 isotopes recorded in rainwater during 3-year observations in Prague. It is found that the reasons for the most common values of Bi-214/Pb-214 can be the height of the lower edge of the cloud of 0.2-1.4 km and the vertical air velocity of 0.1 – 0.2 m / s. The ratio changes slightly from changes in the turbulent mixing, the value of the vertical air movement makes the main contribution. It is found that with the increase in the intensity of rain, a shift in the radioactive equilibrium should occur due to an increase in the velocity of vertical air. Atmospheric inversion is able to balance the volumetric activities of the descendants of atmospheric radon, atmospheric inversion can be identified by the equality between the activities of the radon progeny in the atmosphere at different altitudes or in rainwater. It is shown that the search for the relationship between precipitation intensity and gamma radiation is expose to error, without taking into account the influence of the АBi−214/АPb−214 ratio, due to the unequal activities of the atmospheric isotopes Bi-214 and Pb-214. This error of 7-14% when using gamma radiometry, and of 5-9% when using dosimeters is estimated. олучены результаты моделирования распределения дочерних продуктов радона в атмосферном столбе по высоте, объясняющие изменение концентраций радионуклидов в дождевой воде в зависимости от высоты нижней кромки облаков. Значения соотношений активностей АBi−214/АPb−214 радионуклидов дождевой воды от 0.6 до 0.8, могут возникать при высоте нижней кромки облаков от 0.2 до 1.4 км и адвекции от 0.1 до 0.2 м/с соответственно. Произведена оценка шибки от 7 до 14%, возникающая при использовании гамма радиометров, и от 5 до 9% — дозиметров, во время осадков с целью поиска корреляции роста гамма-фона и интенсивности жидких ливневых осадков.


2001 ◽  
Author(s):  
Sarah E. A. Nielsen ◽  
Amanda Luthe ◽  
Elizabeth Rellinger

2006 ◽  
Author(s):  
Samantha J. Simmons ◽  
Leslie Calderon ◽  
Quingnan Zhou ◽  
Stephanie Padilla ◽  
Sheila K. Grant

2011 ◽  
Author(s):  
Ling-Lun Chien ◽  
Marty Sapp ◽  
Jane P. Liu ◽  
Steve Bernfeld ◽  
Steffanie J. Scholze ◽  
...  

2018 ◽  
Vol 2 (3) ◽  
pp. 206-219
Author(s):  
Louay Qais Abdullah ◽  
Duraid Faris Khayoun

The study focused basically on measuring the relationship between the material cost of the students benefits program and the benefits which are earned by it, which was distributed on college students in the initial stages (matinee) and to show the extent of the benefits accruing from the grant program compared to the material burdens which matched and the extent of success or failure of the experience and its effect from o scientific and side on the Iraqi student through these tough economic circumstances experienced by the country in general, and also trying to find ways of proposed increase or expansion of distribution in the future in the event of proven economic feasibility from the program. An data has been taking from the data fro the Department of Financial Affairs and the Department of Studies and Planning at the University of Diyala with taking an data representing an actual and minimized pattern and questionnaires to a sample of students from the Department of Life Sciences in the Faculty of Education of the University of Diyala on the level of success and failure of students in the first year of the grant and the year before for the purpose of distribution comparison. The importance of the study to measure the extent of interest earned in comparision whit the material which is expenseon the program of grant (grant of students) to assist the competent authorities to continue or not in the program of student grants for the coming years.


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