Objective(s) In the present study, the differences in the relaxant effects of aqueous, ethyl acetate and n-butanol fractions of Rosa damascena on tracheal smooth muscle of guinea pigs were examined. Materials and Methods The relaxant effects of three cumulative concentrations of each fraction (0.1, 0.2 and 0.4 g%) in comparison with saline and three cumulative concentrations of theophylline ...

The large literature on costly signaling and the somewhat scant literature on preference signaling had varying success in showing the effectiveness of signals. We use a field experiment to show that even when everyone can send a signal, signals are free and the only costs are opportunity costs, sending a signal increases the chances of success. In an online dating experiment, participants can a...

Gender continues to be a relatively marginal issue in environmental justice debates and yet it remains an important aspect of injustice. To help redress the balance, this article explores women's experience of environmental justice through a review of the existing literature and the author's prior qualitative research, as well as her experience of environmental activism. The analysis confirms t...

After publication of our article [1], it has come to our attention that Professor Cesare Formisano was incorrectly excluded from the list of authors in the initial version of this manuscript. We publish this correction to update the author list to include Professor Formisano as an author. The correct author list is as follows:. Gennaro Limite, Emanuela Esposito, Viviana Sollazzo, Giuseppe Cianc...

The genus Chrysellampus Semenov, 1932 is revalidated. Chinese species are revised and keyed for the first time. Five species are recorded, two of them are new for science: Chrysellampus obtusidentibus Rosa, Wei & Xu, sp. nov. (Yunnan), and C. proximocellis Rosa, Wei & Xu, sp. nov. (Gansu and Yunnan). New synonymy for Chrysellampus Semenov, 1932 (=Parellampus Semenov, 1932, syn. nov.) and new co...

Copyright © 2014 Rosa Ventura-Martinez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In accordance of the Creative Commons Attribution License all Copyrights © 2014 are reserved for SCIRP and the owner of the intellectual...

The goal of the ROSA project is to develop a variableautonomy architecture to support ground-based control of space-deployed robotic systems in dynamic workspace environments. This capability is aimed at unmanned satellite servicing systems that must rendezvous with, capture and service free flying objects. As data communication limitations force the system to perform free flyer capture autonom...