نتایج جستجو برای: minimum relative humidity

تعداد نتایج: 559031  

2015
Gautam Naik Sridhar Krishnaswamy

In this article, we report on a room-temperature humidity sensing device using graphene oxide (GO) thin films synthesized by chemical exfoliation. Changes in the device conductivity are measured for varying relative humidity in the experimental chamber. Experiments are carried out for relative humidity varying from 30% to 95%. We observe a difference in the results obtained for low relative hum...

2012
Lutang Wang Nian Fang Zhaoming Huang

Humidity is one of important environmental parameters, which refers to the water vapor content in the air. As one of the fundamental abiotic factors, humidity determines an environment where animals and plants can thrive, also influences the human life. There are three items commonly used to describe humidity, which are absolute humidity (AH), relative humidity (RH) and specific humidity (SH) [...

Journal: :Plant physiology 1975
R S Alberte E L Fiscus A W Naylor

The effects of low and high relative humidity and of polyethylene glycol-induced root water stress on chlorophyll accumulation, on formation of the lamellar chlorophyll-protein complexes, and on the development of photosynthetic activity during chloroplast differentiation were examined. Low relative humidity or polyethylene glycol-induced root water stress (stress conditions) resulted in a 3 to...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0
علی جعفری کارشناس ارشد زراعت/ دانشگاه پیام نور استان تهران

in order reaching to occurate water regime under minimum tillage system and its effect on the physiological indices of 3 rice cultivars an experiment  was conducted as a split-plot design based on  randomized complete block with three replication in the year of 2006-2007 at research field of shavour station. treatment contains three water regimes with one day or check, two (i2) and three days (...

2011
PAUL A. O’GORMAN NICOLAS LAMQUIN TAPIO SCHNEIDER MARTIN S. SINGH

An idealized model of advection and condensation of water vapor is considered as a representation of processes influencing the humidity distribution along isentropic surfaces in the free troposphere. Results are presented for how the mean relative humidity distribution varies in response to changes in the distribution of saturation specific humidity and in the amplitude of a tropical moisture s...

Journal: :Respiratory care 2007
Anne E Holland Linda Denehy Catherine A Buchan John W Wilson

BACKGROUND Noninvasive positive-pressure ventilation (NPPV) delivers air at a high flow, which is associated with airway mucosal drying and impaired airway functioning. OBJECTIVES To examine the effects of mechanical ventilation parameters on relative humidity and absolute humidity during NPPV, and to evaluate the effect of a heated passover humidifier on relative humidity, absolute humidity,...

2012
Mohsen Ghanbarzadeh Mahmoud Asl Mohammadizadeh Abdolhamid Habibi

Temperature and relative humidity are as major factors that stimulate exercise-induced bronchospasm (EIB). The purpose of this study was to investigate the effect of environmental temperature and relative humidity on the EIB in the pre-test and 5, 10, 15 and 60 minutes (1 hour) after the activity in the exercise (EXEG) and control (CONG) groups. Among 60 adolescent male students of Sport and Ph...

2014
Shuang Li Hong-lang Xiao Liang Zhao Mao-Xian Zhou Fang Wang

Many species have been found to be capable of foliar water uptake, but little research has focused on this in desert plants. Tamarix ramosissima was investigated to determine whether its leaves can directly absorb water from high humidity atmosphere and, if they can, to understand the magnitude and importance of foliar water uptake. Various techniques were adopted to demonstrate foliar water up...

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