abstract       background and objective: glycyrrhizaglabra l. is one of the most widely used medicinal herbs in golestan province that is known for its anti-inflammatory, carminative, antiviral, anti-infection and anti-ulcer properties in iranian traditional medicine. this study aimed to assess the anti-bacterial and anti-oxidative activity of g. glabrafrom the golestan province.         method...

Introduction: Amnesia or loss of memory is the cardinal hallmark of Alzheimer’s disease (AD), a progressive neurodegenerative disorder associated with ageing process. Although, AD had been discovered over a century ago, drugs which could cure or halt the progression of the disease are yet to see the light of the day. However, there has been a growing interest in the use of phytomedicines with m...

Let D be a digraph. A subset S of V (D) is stable set if every pair vertices in non-adjacent D. collection disjoint paths path partition D, vertex exactly one . We say that and are orthogonal each contains S. digraph satisfies the α-property for maximum there exists such orthogonal. α-diperfect induced subdigraph α-property. In 1982, Berge proposed characterization digraphs terms forbidden anti...

In 2008, based on the two-party Diffie–Hellman technique, Biswas proposed a contributory group key exchange protocol called the Group-DH protocol. This contributory property is an important one of group key agreement. Unfortunately, in this paper we show that the proposed Group-DH protocol is not a contributory group key exchange protocol. Therefore, we propose an improved group key exchange pr...

Recent research has shown that the single-user security of optimistic fair exchange cannot guarantee the multi-user security. This paper investigates the conditions under which the security of optimistic fair exchange in the single-user setting is preserved in the multi-user setting. We first introduce and define a property called “Strong ResolutionAmbiguity”. Then we prove that in the certifie...

Customer valuations are not just about service quality but also process efficiency. As a result organisations need to continuously reassess their business processes in order to improve their operations and service delivery to their customers. Conveyancing deals with the exchange of immovable property. Although conveyancing processes are wider in context than conventional organisational-level bu...

Geosynthetic clay liners (GCLs) are often used as anti-seepage systems in landfills and at the bottom of tailing ponds. The performance GCL will change under different temperatures. In this study, bentonite was mixed with test solutions temperatures to measure basic indexes components analyze permeability. composition micro-structure were analyzed by X-ray diffraction, fluorescence spectrum, SE...

Nitrate is an anion of major importance particularly in biological areas. Excessive amounts in water supplies indicate pollution from sewage or agricultural effluents. The effects of excessive quantities of nitrate in water are well known. In this research structural modification of natural clinoptilolite by isomorphic substitution was performed. Isomorphously substituted zeolite was prepar...

Magnesium bipolar plates (BPPs) offer great advantage in realizing the ultra-lightweight target of proton exchange membrane fuel cells (PEMFCs). However, high corrosion tendency limits its application. To improve resistance and surface conductivity Mg BPPs, a novel Graphite paper/Cu coating is proposed this study. 24 h potentiostatic polarization results reveal that current density coated speci...