this study aims at explaining informal internet-based chat format with respect to its genre and writing components and system. the researchers analyzed 53 chat samples which were produced by 53 iranian students in high intermediate and advanced levels of english in a private institute while chatting with foreigners. besides the genre analysis, the purposes why people all around the world chat o...

Objective: The present study investigates the effect of Tiliacora triandra leaf extract on spatial learning, memory, and learning flexibility as well as hippocampal choline acetyltransferase (ChAT) activity in mice.  Materials and Methods: Thirty male ICR mice were randomly divided into three groups including 10% Tween 80, T. triandra 300 mg/kg and T. triandra 600 mg/kg. All administrations wer...

Choline acetyltransferase (ChAT) synthesizes the neurotransmitter, acetylcholine, at cholinergic nerve terminals. ChAT contains nuclear localization signals and is also localized in the nuclei of neural and non-neuronal cells. Nuclear ChAT might have an as yet unidentified function, such as transcriptional regulation. In this study, we investigated the alteration of candidate gene transcription...

Release of acetylcholine (ACh) in the hippocampus (HC) occurs during exploration, arousal, and learning. Although the medial septum-diagonal band of Broca (MS-DBB) is the major extrinsic source of cholinergic input to the HC, cholinergic neurons intrinsic to the HC also exist but remain poorly understood. Here, ChAT-tauGFP and ChAT-CRE/Rosa26YFP (ChAT-Rosa) mice were examined in HC. The HC of C...

Online text chat is a very popular Internet-based application. Previous studies have identified several problems with standard text chat systems. Real-time collaborative editing systems can be used for text chat. This paper compares text chat via collaborative editing systems with text chat via standard text chat systems. It has been identified that standard text chat system do not maintain som...