نتایج جستجو برای: unsaturated shear strength

تعداد نتایج: 283863  

Journal: :E3S web of conferences 2023

Several researchers have investigated the effect of suction and partial saturation on angle residual shear strength. Most these investigations involve adoption application a method controlling ring apparatus performing tests same soil for various values suction. Methods adopted include both axis translation technique control over range 50-1500 kPa saturated salt solutions in several MPa. The ge...

Journal: :galen medical journal 0
ali nozari department of pediatric dentistry, dental school, shiraz university of medical sciences, shiraz, iran ali heidari student research committee, dental school, shiraz university of medical sciences, shiraz, iran ebrahim azimi student research committee, dental school, shiraz university of medical sciences, shiraz, iran azade rafiee department of pediatric dentistry, dental school, shiraz university of medical sciences, shiraz, iran

background: esthetic demands among patients have led to the introduction of tooth-colored restorations. composite resins bond to enamel applying acid etch technique. total etch adhesion systems are still considered as golden standard among bonding systems. however, clinicians have tendency towards using adhesive systems with a simplified application procedure. the aim of the present study is to...

Journal: :journal of dentistry, tehran university of medical sciences 0
m. khoroushi sh. motamedi

objective: different ceramic repair systems have been reported for fractured ceramics. however, limited information is available concerning the bond strength of these systems especially after thermocycling. the aim of this in-vitro study was to determine the effect of thermocycling on the shear bond strength of composite-resin to feldspathic porcelain with and without silane pretreatment. mater...

Journal: :journal of dentistry, shiraz university of medical sciences 0
ali asghar alavi dept. operative dentistry and biomaterials of research center, school of dentistry, shiraz university of medical sciences, shiraz, iran. zeinab behroozi dept. of orthodontic, school of dentistry, yasuj university of medical sciences, yasuj, iran. farid nik eghbal dept. operative dentistry, school of dentistry, yasuj university of medical sciences, yasuj , iran.

statement of the problem: porcelain laminate veneer is an esthetic restoration used as an alternative to full veneer crowns and requires minimal tooth preparation. in restoration with porcelain laminate veneers, both the longevity of the laminate and conservation of the sound tooth structure are imperative. purpose: the present study aimed to investigate the shear bond strength of porcelain lam...

Journal: :dental research journal 0
claudio poggio marco pigozzo matteo ceci andrea scribante riccardo beltrami marco chiesa

background: the purpose of this study was to evaluate the influence of three different luting protocols on shear bond strength of computer aided design/computer aided manufacturing (cad/cam) resin nanoceramic (rnc) material to dentin. materials and methods: in this in vitro study, 30 disks were milled from rnc blocks (lava ultimate/3m espe) with cad/cam technology. the disks were subsequently c...

Journal: :journal of the structural engineering and geotechnics 0
soheil ghareh assistant professor, department of civil engineering, payame noor university, p.o. box 19395-4697, tehran, iran seyed vahid mojtahed sistani msc in civil engineering, islamic azad university, central tehran branch

nowadays, soil reinforcement using polymer elements have been investigated by a number of researchers in order to increase the load capacity of soils. reinforcing soils using fibers is a method of soil improvement, which offers a homogenous mixture in combination with soils, regarding their tensile strength. this combination maintains pressure loading capacity and properties in mutual resistant...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
S Sridhar Kandaswamy Subramanian

Large-scale dynamo action due to turbulence in the presence of a linear shear flow is studied. Our treatment is quasilinear and kinematic but is nonperturbative in the shear strength. We derive the integrodifferential equation for the evolution of the mean magnetic field by systematic use of the shearing coordinate transformation and the Galilean invariance of the linear shear flow. For nonheli...

2015
Mohammad Panjehpour Hwa Kian Chai Yen Lei Voo Jose Manuel Garcia Aznar

Deep beams are commonly used in tall buildings, offshore structures, and foundations. According to many codes and standards, strut-and-tie model (STM) is recommended as a rational approach for deep beam analyses. This research focuses on the STM recommended by ACI 318-11 and AASHTO LRFD and uses experimental results to modify the strut effectiveness factor in STM for reinforced concrete (RC) de...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2008
I A Guz A A Rodger A N Guz J J Rushchitsky

The paper draws on the similarities between the well-known process of whiskerization of microfibres and the recent idea of bristled nanowires. The new method for evaluation of the effective elastic properties of such materials is suggested based on the model of four-component composition. This model assumes the transverse isotropy of continuum and predicts five elastic moduli and density as ind...

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