OBJECTIVE Oxidative stress plays a key role in the pathophysiology of brain ischemia and neurodegenerative disorders. Previous studies indicated that Viola tricolor and Viola odorata are rich sources of antioxidants. This study aimed to determine whether these plants protect neurons against serum/glucose deprivation (SGD)-induced cell death in an in vitro model of ischemia and neurodegeneration...

Summit areas of oceanic islands constitute some of the most isolated ecosystems on earth, highly vulnerable to climate change and introduced species. Within the unique high-elevation communities of Tenerife (Canary Islands), reproductive success and thus long-term survival of species may depend on environmental suitability as well as threat by introduced herbivores. By experimentally modifying ...

violet is one of the ornamental plants with a good value in landscaping and herbal medicine. salicylic acid is a signaling agent involving in secondary metabolite production. the aim of this study was to evaluate the physiological responses of violet flowers to exogenous salicylic acid. this experiment was conducted in the greenhouse, as a completely randomized design. salicylic acid was spraye...

We discuss an unsupervised feature extraction method which is driven by an information theoretic based criterion: mutual information. While information theoretic signal processing has been examined by many authors the method presented here is more closely related to the approaches of Linsker (1988,1990). Bell and Sejnowski (1995), and Viola et a1 (1996). The method we discuss differs from previ...

We describe a network system architecture called VIOLA (Video-on-LANs) for on-damand video distribution services on a local area network. The architecture makes use of a switched-network topology and distributed video servers, which together allow the system to be scalable from tens to thousands of users. We propose a Buffered Datagram Layer (BDL) for shielding underlying network dependencies, ...