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Influence of Intraoral Temperature and Relative Humidity on the Dentin Bond Strength: An in Situ Study 下载免费PDF全文
Letícia O. Saraiva DDS MS Thaiane R. Aguiar DDS MS PhD Leonardo Costa DDS MS Andrea N. Cavalcanti DDS MS PhD Marcelo Giannini DDS MS PhD Paula Mathias DDS MS PhD 《Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]》2015,27(2):92-99
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Social Network Size and Cranial Magnetic Resonance Imaging Findings in Older Adults: The Cardiovascular Health Study 下载免费PDF全文
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Joshua B. Richardson Samuel B. Jameson Andrea Gloria-Soria Dawn M. Wesson Jeffrey Powell 《The American journal of tropical medicine and hygiene》2015,93(1):189-193
The mosquito Aedes aegypti is a vector of yellow fever, dengue, and chikungunya. Control of the insect is crucial to stop the spread of dengue and chikungunya, so it is critically important to understand its mating behavior. Primarily, based on laboratory behavior, it has long been assumed that Ae. aegypti females mate once in their lifetime. However, multiple inseminations have been observed in semi-field and laboratory settings, and in closely related species. Here, we report the first evidence of polyandry in a natural population of Ae. aegypti. Female Ae. aegypti were captured around the New Orleans, LA, metropolitan area. They were offered a blood meal and allowed to lay eggs, which were reared to the third-instar larval stage. A parentage analysis using four microsatellite loci was performed. Out of 48 families, 3 showed evidence of multiple paternity. An expanded analysis of these three families found that one family group included offspring contributed by three fathers, and the other two included offspring from two fathers. This result establishes that polyandry can occur in a small proportion of Ae. aegypti females in a natural setting. This could complicate future genetic control efforts and has implications for sampling for population genetics. 相似文献
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Leisha Diane Nolen Lynda Osadebe Jacques Katomba Jacques Likofata Daniel Mukadi Benjamin Monroe Jeffrey Doty Lem's Kalemba Jean Malekani Joelle Kabamba Pierre Lokwa Bomponda Jules Inonga Lokota Marcel Pie Balilo Toutou Likafi Robert Shongo Lushima Jean-Jacques Muyembe Tamfum Emile Wemakoy Okitolonda Andrea M. McCollum Mary G. Reynolds 《The American journal of tropical medicine and hygiene》2015,93(2):410-415
An increased incidence of monkeypox (MPX) infections in the Democratic Republic of the Congo was noted by the regional surveillance system in October 2013. Little information exists regarding how MPX is introduced into the community and the factors associated with transmission within the household. Sixty-eight wild animals were collected and tested for Orthopoxvirus. Two of three rope squirrels (Funisciurus sp.) were positive for antibodies to Orthopoxviruses; however, no increased risk was associated with the consumption or preparation of rope squirrels. A retrospective cohort investigation and a case–control investigation were performed to identify risk factors affecting the introduction of monkeypox virus (MPXV) into the community and transmission within the home. School-age males were the individuals most frequently identified as the first person infected in the household and were the group most frequently affected overall. Risk factors of acquiring MPXV in a household included sleeping in the same room or bed, or using the same plate or cup as the primary case. There was no significant risk associated with eating or processing of wild animals. Activities associated with an increased risk of MPXV transmission all have potential for virus exposure to the mucosa. 相似文献