In the course of investigating RNA metabolism in greening plastids of unexpanded leaves of jack bean (Canavalia ensiformis [L.] DC.) seedlings, it was found that relative humidity had to be controlled in order to obtain reproducible rates of chlorophyll accumulation and 'H-uracil incorporation into newly synthesized RNA. Under high relative humidity conditions, chlorophyll accumulation occurred...

BACKGROUND Nosocomial infections constitute a global health problem. OBJECTIVES To explore the relationship between nosocomial infection rates (NIRs) and climatic factors including temperature and relative humidity in Guangzhou area of China. METHODS 30892 patients in our hospital in 2009 were investigated for nosocomial infection status, and the contemporaneous temperature and relative hum...

An inkjet-printed relative humidity sensor based on capacitive changes which responds to different humidity levels in the environment is presented in this work. The inkjet-printed silver interdigitated electrodes configuration on the paper substrate allowed for the fabrication of a functional proof-of-concept of the relative humidity sensor, by using the paper itself as a sensing material. The ...

[1] This study evaluates three major Numerical-Weather-Prediction reanalyses (ERA-Interim, NCEP/NCAR Reanalysis I, and NCEP/DOE Reanalysis II) in modeling surface relative shortwave cloud forcing, cloud fraction, and cloud albedo. The observations used for this evaluation are decade-long surface-based continuous measurements of the U.S. Atmospheric Radiation Measurement (ARM) program from 03/25...

in this paper, a non-isothermal two-phase flow in the cathode gas diffusion layer (gdl) of pem fuel cell is modeled. the governing equations including energy, mass and momentum conservation equations are solved by numerical methods. also, the optimal values of the effective parameters such as the electrodes porosity, gas diffusion layer (gdl) thickness and inlet relative humidity are calculated...

In this paper we present a humidity sensor based on keratin which is present in human hair. Noting keratin’s ability to absorb humidity and undergo structural changes, we studied the change in its electrical properties as a function of humidity and temperature. The electrical properties change due to the change in water percentage in keratin as well as due to volumetric changes. The volumetric ...

Annual and seasonal correlations between temperature and both specific and relative humidity are presented based on radiosonde station data over the tropical Pacific Ocean and North America. Results are presented for the surface and the 850-, 700-, and 500-hPa levels. The correlations between anomalies of temperature and relative humidity are generally negative, and those between temperature an...

PURPOSE To analyze the cutoff severity of early lesions according to recovery rate after fluoride treatment. METHODS 100 specimens were demineralized over 3 to 40 days. Specimens were immersed in 2% sodium fluoride solution for 4 minutes, and then in artificial saliva for the rest of the total 24 hours. After 10-time repetition of this cycle, the deltaF recovery rates (R(deltaF,) %) were calc...

The role of relative humidity (RH) while processing and storing seeds of Brassica spp. and Eruca sativa was investigated by creating different levels of relative humidity, namely, 75%, 50%, 32%, and 11% using different saturated salt solutions and 1% RH using concentrated sulphuric acid. The variability in seed storage behaviour of different species of Brassica was also evaluated. The samples w...