Historic climate factors associated with major avalanche years on the Wasatch Plateau, Utah

2003 ◽  
Vol 37 (3) ◽  
pp. 315-332 ◽  
Author(s):  
Elizabeth G. Hebertson ◽  
Michael J. Jenkins
2015 ◽  
Vol 9 (12) ◽  
pp. e0004211 ◽  
Author(s):  
Magali Teurlai ◽  
Christophe Eugène Menkès ◽  
Virgil Cavarero ◽  
Nicolas Degallier ◽  
Elodie Descloux ◽  
...  

Author(s):  
Manoel Sebastião da Costa Lima-Junior ◽  
Paulo Silva de Almeida ◽  
José Oliveira da Silva ◽  
Rosana Alexandre da Silva ◽  
Odival Faccenda ◽  
...  

Abstract Studies of the geographic distribution of sand flies and the factors associated with their occurrence are necessary to understand the risk of leishmaniasis transmission. The objective of this study was to characterize the sand fly fauna, particularly the spatial distribution of Lutzomyia longipalpis (Lutz & Neiva), and correlate these with climate factors in the Dourados municipality, Brazil. The collection of sand flies was carried out with CDC Light Traps over two periods: at six sites for three consecutive nights each month from August 2012 to July 2013; and at four other sites for two consecutive nights each month from April 2017 to February 2018. We collected 591 sand flies in the first period and 121 in the second period for a total of 712 sand flies; 697 of the total collected were Lu. longipalpis. The minimum and maximum sand fly infestation rate (sites with vector presence) was 11.1% and 83.33% in the first period, and 0% and 50.0% in the second period. No sand flies with Leishmania were identified via PCR. Lu. longipalpis presented an aggregate disposition with excellent adjustment. Rainfall and relative humidity were the abiotic factors that influenced the vector infestation level. The aggregate distribution for this species was predicted by the environmental factors that favor the proliferation of Lu. longipalpis. The results of this study should assist in devising measures to control sand flies in Dourados, Brazil.


2015 ◽  
Vol 44 (suppl_1) ◽  
pp. i45-i45
Author(s):  
B. C. Chun ◽  
S. H. Chang ◽  
S. Y. Song ◽  
M. J. Paik

Author(s):  
Hilton H. Mollenhauer

Many factors (e.g., resolution of microscope, type of tissue, and preparation of sample) affect electron microscopical images and alter the amount of information that can be retrieved from a specimen. Of interest in this report are those factors associated with the evaluation of epoxy embedded tissues. In this context, informational retrieval is dependant, in part, on the ability to “see” sample detail (e.g., contrast) and, in part, on tue quality of sample preservation. Two aspects of this problem will be discussed: 1) epoxy resins and their effect on image contrast, information retrieval, and sample preservation; and 2) the interaction between some stains commonly used for enhancing contrast and information retrieval.


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