In this article we show that Shim’s new ID-based tripartite multiple-key agreement protocol still suffers from the impersonation attack, a malicious user can launch an impersonation attack on their protocol. Keyword: ID-based, Weil-paring, impersonation attack, tripartite authenticated key agreement, unknown key share attack.

The Wujiang River is a tributary of the upper Yangtze River that shows great variations in its flow regime and habitat condition. Dams have been built along the Wujiang River and have altered the habitats profoundly enough that they may give rise to reproductive isolation. To test whether the swimming performance and morphology of the Chinese hook snout carp (Opsariichthys bidens), varied among...

OBJECTIVES Bidens species are used for their antidiabetic properties traditionally in many countries. Aim of this study is to evaluate hypoglycaemic and antidiabetic activity of Bidens tripartita extract and to identify its active compounds through bioactivity guided isolation technique. MATERIALS AND METHODS Hypoglycaemic effects of B. tripartita extract and its sub-extracts were investigate...

We consider a distributed decoupling task for a tripartite system in which Bob and Charlie “exclude” Alice by destroying correlation between BC and A in a tripartite state ρABC shared by the parties using only local random operations. We refer to this task as excluding. In an asymptotic limit of infinite copies of ρABC , we investigate the excluding cost, namely, the cost of randomness required...

BACKGROUND In order to elucidate the complex relationship between co-occurring depression and anxiety with cardiac autonomic function in the elderly, this study examined the correlation between cardiac vagal control (CVC) and pre-defined, theoretical factors from the Hospital Anxiety and Depression Scale (HADS). METHODS Three hundred fifty-four randomly selected Chinese male subjects aged ≥ 6...

To understand germination timing in an ecological context, the response to environmental events that affect seed dormancy is central, and has to be combined with knowledge of germination responses to different circumstances. In this study, seed dormancy, germination, and emergence phenology of six annual co-occurring weedy Asteraceae species were investigated. Three pre-treatments (warm and col...

The aim of this study was to elucidate the mechanism of the healing process mediated by the flavonic fraction of Bidens aurea on chronic gastric ulceration induced by 5% acetic acid in rats. The diethyl ether extract (125 and 62.5 mg kg-1 body weight) was administered in a single doses, 7 and 14 days after provocation of lesions. Our results demonstrated that both doses significantly decreased ...

Screening of different extracts and fractions from the plant Bidens pilosa Linn. var. (Asteraceae) has been conducted using the in-vitro comet assay for anticancer and the antipyretic action, which was done with in-vivo models. The extract from whole plant was extracted with n-hexane, chloroform and methanol extract (E1 - E3). The extracts were fractioned by column chromatography method and fra...