PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Humidity”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,567 records · Page 87Linked to original sources
PubMed2006

[Grain-filling characters of different genotype winter wheat under nitrogen fertilization in semi-humid area of south Loess Plateau].

A field experiment was conducted in the south part of Loess Plateau with 632 mm precipitation each year. Three genotypes winter wheat 9430, Xiaoyan No. 6 and Shang188 were used as test materials to study their grain-filling characters under two nitrogen application levels (0 and 90 kg x hm(-2)). The results showed that genetic difference was the main factor affecting grain-filling characteristics, while nitrogen fertilization had a less effect. There were significant differences among genotypes in the duration of maximum grain filling rate (GFRmaxD), active grain-filling period (D), and the days reaching to the maximum grain-filling rate (GFRmaxGD). For Shang188, Xiaoyan No. 6 and 9430, the GFRmaxD was 17.20, 14.15 and 14.13 d, D was 29.00, 26.40 and 2688 d, and GFRmaxGD was 28.14, 23.90 and 23.89 d, respectively. All the parameters of Shang188 were significantly bigger than those of 9430 and Xiaoyan No. 6, while those of the latter two had no significant difference. There was an interaction between nitrogen fertilization and genotype, but the effect of nitrogen fertilization on the three parameters was relatively small. 1000 kernel weight had a significant positive correlation with GFRmaxD, GFRmaxGD and D, suggesting that the three parameters were the main factors affecting grain weight.

China↗
PubMed1991

[The distribution of the tsetse fly (Diptera: Glossinidae) in the humid savanna zone (Central African Republic). Evaluation of prospective entomological techniques].

Two trapping methods were compared during a survey of the distribution of tsetse flies in the Mbororo cattle breeding area of the Central African Republic: (a) several traps dispersed throughout the riverine forest galleries and remaining only one day at each site: (b) one sentinel trap placed at the cattle drinking point and remaining for several days. The latter method was more reliable and is therefore recommended. The concentration of tsetse flies at the drinking points was negligible during the rainy season.

Animals↗
PubMedDate not supplied

[Changes in ventilation during use of heat and humidity exchangers].

The Authors studied in 10 patients during mechanical ventilation the effects of the application of heat and moisture exchanger (HME) in the presence of constant TV and frequency. They observed an increase of PaCO2 and PE, CO2 during the use of HME; this is due to Vd/Vt increase. The Authors conclude that it is mandatory to increase the total ventilation when using HME to avoid dangerous levels of hypercapnia.

Adult↗