The present work aims to define the mechanical behavior of a new composite material for preservation and enhancement vast historical architectural heritage particularly vulnerable environmental seismic actions. represents novelty in landscape fibrous mortars consists natural hydraulic lime (NHL)-based mortar, strengthened by Sisal short fibers randomly oriented mortar matrix. developed ensures ...

background: the prevalence of allergic diseases has risen in the last decades. the objective of this study was to determine the common allergens in children via the skin prick test. methods: this cross-sectional study recruited 313 allergic children (4 months to 18 years old) referred to the asthma and allergy clinic of children’s medical center in tehran. a questionnaire containing demographic...

This paper addresses the security and efficiency issues of the Mix-net based on permutation networks introduced in [1]. We first show that the original construction results in a Mix-net that yields biased permutation, so it gives some advantage to adversaries. A simple repair is provided. We then observe that one of the original schemes can be improved so that the servers and verifier enjoy mor...

We present the architecture, design issues and functions of a MIX-based system for anonymous and unobservable real-time Internet access. This system prevents tra c analysis as well as ooding attacks. The core technologies include an adaptive, anonymous, time/volumesliced channel mechanism and a ticket-based authentication mechanism. The system also provides an interface to inform anonymous user...

Conventional surface modification methods, such as ion insertion and laser melting, have recently seen growing importance in the innovative usage of electrical discharge machining process (EDM) a competitive substitute. Surface composition properties are affected by several factors, including erosion work materials tool during process, well formation plasma channels from vaporized materials. Th...

A novel method is proposed for extracting the mixed-mode cohesive laws of composite materials undergoing delamination with large-scale fibre bridging. In approach, are derived from a potential function expressed in cylindrical coordinates magnitude and phase angle between normal tangential end-openings. The mapped using experimental R-curves terms J-integral describe both crack tip (high tracti...

Global objectives to mitigate climate change in the construction industry have led increasing geopolymer development as an alternative carbon-intensive cement. Geopolymers can similar mechanical properties and a lower carbon footprint. However, production is not homogeneous cement because it produced by synthesizing alkali solutions with different aluminosilicate precursors. This study assessed...