Some biologists accept Wright's adaptive landscape idea, believing it is one of most profound concepts in evolutionary dynamics. Some wouldn't, believing that " the idea that there is such a quantity remains one of the most widely held popular misconceptions about evolution. " The two groups usually have very limited communication with each other. The paper of Poelwijk, Kiviet, Weinreich, and T...

A mechanism for eggshell production in Schistosoma mansoni has been proposed (Wells & Cordingley, 1991), and suggests that the release of eggshell protein globules from the vitelline cells occurs under alkaline conditions within the ootype followed by their subsequent fusion to form the eggshell. Fusion and tanning of these components produces eggshell which autofluoresces. The present study wa...

Frequent and excessive tanning persists despite a growing understanding of its associated morbidity and mortality, suggesting that ultraviolet radiation may impart rewarding effects beyond the assumed cosmetic benefits. To empirically measure putative centrally rewarding properties of ultraviolet radiation (UVR), we assessed the effects of a commercially available tanning bed upon regional cere...

1. Geller AC, Colditz G, Oliveria S, et al. Use of sunscreen, sunburning rates, and tanning bed use among more than 10 000 US children and adolescents. Pediatrics. 2002;109(6):1009-1014. 2. Cokkinides VE, Weinstock MA, O’Connell MC, Thun MJ. Use of indoor tanning sunlamps by US youth, ages 11-18 years, and by their parent or guardian caregivers: prevalence and correlates. Pediatrics. 2002;109(6...

Background. Sun-tanning perceptions are monitored to identify changes and help refine targeting of skin cancer prevention messages. Aim. To investigate associations between perceptions of sun-tanning and demographic factors among a New Zealand urban population, 1994-2006. Methods. A telephone survey series was conducted during summer in 1994, 1997, 1999/2000, 2002/2003, and 2005/2006. Demograph...

Despite the fact, world leather industries are built on chromium tannage system, there is a growing interest of metal free tannages (chrome). This primarily owing to rising demand for tanning in industry. The goal this research paper was evaluate influences vegetable tannins materials retannage leather, by using Acacia nilotica ssp Adansonia pods (hydrolysable tannins) and Azadirachta indica ba...