Effect of Relative Humidity on Experimental Transmission of Sendai Virus in Mice

1972 ◽  
Vol 140 (4) ◽  
pp. 1437-1440 ◽  
Author(s):  
J. Van Der Veen ◽  
Y. Poort ◽  
D. J. Birchfield
Development ◽  
1967 ◽  
Vol 18 (3) ◽  
pp. 305-319
Author(s):  
Yutaka Tahara ◽  
I. L. Kosin

The embryonic period of the domestic turkey is characterized by a relatively high level of mortality (Kosin & Mun, 1960, 1965). The aim of the investigation reported below was to analyse the significance of certain changes observed in turkey embryos doomed to die because of either congenital or experimentally induced defects. The study was based on hatching eggs obtained in 1963 and 1964 from the Broad Breasted Bronze turkey stock maintained at that time at Washington State University for genetic investigations, and from a mass-mated flock of non-selected White Leghorn chickens. Only such criteria as size and shape of the egg and soundness of the shell were employed in choosing eggs for use. The eggs were brought daily to the storage room a few hours after laying and stored at 13·5 °C and 85 % relative humidity for 1–14 days. Following this, the eggs were incubated at 37·5 °C and 60 % relative humidity for 1–15 days.


1970 ◽  
Vol 31 (3-4) ◽  
pp. 237-246 ◽  
Author(s):  
J. Veen ◽  
Y. Poort ◽  
D. J. Birchfield

Author(s):  
Ruchama Baum ◽  
J.T. Seto

The ribonucleic acid (RNA) of paramyxoviruses has been characterized by biochemical and physiochemical methods. However, paramyxovirus RNA molecules have not been studied by electron microscopy. The molecular weights of these single-stranded viral RNA molecules are not known as yet. Since electron microscopy has been found to be useful for the characterization of single-stranded RNA, this investigation was initiated to examine the morphology and length measurements of paramyxovirus RNA's.Sendai virus Z strain and Newcastle disease virus (NDV), Milano strain, were used. For these studies it was necessary to develop a method of extracting RNA molecules from purified virus particles. Highly purified Sendai virus was treated with pronase (300 μg/ml) at 37°C for 30 minutes and the RNA extracted by the sodium dodecyl sulfate (SDS)-phenol procedure.


2015 ◽  
Vol 41 (08) ◽  
Author(s):  
S Armeanu ◽  
S Kaiser ◽  
J Jobst ◽  
I Smirnow ◽  
M Gregor ◽  
...  
Keyword(s):  

2015 ◽  
Vol 41 (08) ◽  
Author(s):  
C Bernloehr ◽  
S Bossow ◽  
S Armeanu ◽  
G Ungerechts ◽  
M Gregor ◽  
...  
Keyword(s):  

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
LAKSHMI CHOUDHARY ◽  
PRABHAWATI PRABHAWATI

Prevalence of soil transmitted helminthes infections in apparently healthy school going children and other 528 people of different districts of Koshi regions of North Bihar were evaluated. Over all incidences of STHs infection was 39.39% during study. High incidence of STH was seen in the rainy season i.e., in the month of July and August, September, significantly higher (P<0.05) .The incidence of Ascaris lumbricoides was highest in the month of August (18.64%). The month of September was 15.25% followed by that of July (14.4%) and October with 10.16%. Also the incidence of hookworm registered the highest incidence in the month of June (19.27%) and lowest in the month of December (4.82%) during the study period. However prevalence of Trichuris trichiura was negligible and it was almost nil in the most of the months but was highest in month of September with 28.57% and lowest in October with 14.00% The climatic factors are responsible for soil transmitted helminthes which are temperature, rainfall and relative humidity. Ascariasis, Trichuriasis and Ancyclostomiasis (Hookworm infection) are found to be endemic in this region.


2019 ◽  
Vol 25 (1) ◽  
Author(s):  
MASROOR ALI KHAN ◽  
KHALID AL GHAMDI ◽  
JAZEM A. MEHYOUB ◽  
RAKHSHAN KHAN

The focus of this study is to find the relationship between El Nino and dengue fever cases in the study area.Mosquito density was recorded with the help of light traps and through aspirators collection. Climate data were obtained from National Meteorology and Environment centre. (Year wise El Nino and La Nina data are according to NOAA & Golden Gate Weather Services). Statistical methods were used to establish the correlation coefficient between different factors. A high significant relationship was observed between Relative Humidity and Dengue fever cases, but Aedes abundance had no significant relationship with either Relative humidity and Temperature. Our conclusion is that the El Nino does not affect the dengue transmission and Aedes mosquito abundance in this region, which is supported by earlier works.


2007 ◽  
Vol 2007 (suppl_26) ◽  
pp. 417-422 ◽  
Author(s):  
W. Oueslati ◽  
M. S. Karmous ◽  
H. Ben Rhaiem ◽  
B. Lanson ◽  
A. Ben Haj Amara

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