نتایج جستجو برای: pre stress loading

تعداد نتایج: 804110  

2016
Wai Hon Chooi Barbara Pui Chan

Cells protect themselves from stresses through a cellular stress response. In the interverebral disc, such response was also demonstrated to be induced by various environmental stresses. However, whether compression loading will cause cellular stress response in the nucleus pulposus cells (NPCs) is not well studied. By using an in vitro collagen microencapsulation model, we investigated the eff...

Journal: :Glass structures & engineering 2022

The strength of chemically pre-stressed glass depends on the depth surface flaws and value pre-stress. So far, some research has been conducted this topic; however, there were always uncertainties regarding flaw pre-stress profile. Consequently, characterises profile using experimental methods. latter include measuring layer (DoL) compressive (CS) with FSM-7000 h verifying achieved DoL Na+ K+ d...

Journal: :Corrosion Science 2021

A rapid fracture test in four-point bending is proposed to assess hydrogen embrittlement (HE) susceptibility of high strength martensitic steels. The novelty this technique the rate loading, whereas conventional approaches require prolonged slow strain testing. essential fractographic features required identify mechanisms HE failure remain evident, despite fast loading conditions. To demonstrat...

2001
Liangchi Zhang Irena Zarudi

This paper investigates the plastic deformation in mono-crystalline silicon under complex loading conditions. With the aid of various characterization techniques, it was found that the mechanism of plasticity in silicon is complex and depends on loading conditions, involving dislocations, phase transformations and chemical reactions. In general, plastic deformation in silicon is the coupled res...

N. Sadati and R. Mahin-Rousta, S. M. Haeri,

In this research, behaviour of clayey soils under triaxial loading is studied using Neural Network. The models have been prepared to predict the stress-strain behaviour of remolded clays under undrained condition. The advantage of the model developed is that simple parameters such as physical characteristics of soils like water content, fine content, Atterberg limits and so on, are used to mode...

2014
Servando Giráldez Joaquín Herrero-Ruiz Mar Mora-Santos Miguel Á. Japón Maria Tortolero Francisco Romero

The intra-S-checkpoint is essential to control cell progression through S phase under normal conditions and in response to replication stress. When DNA lesions are detected, replication fork progression is blocked allowing time for repair to avoid genomic instability and the risk of cancer. DNA replication initiates at many origins of replication in eukaryotic cells, where a series of proteins ...

Introduction: Most of the functional disorders in the foot are created by changes in the arch of the foot. The motion control shoes are designed to control the excessive rear foot motions. The aim of this study was to evaluate the effect of long-term use of motion control shoe on the ground reaction force components in individuals with functional pronated feet during running. Methods: The prese...

Journal: :Computer methods in biomechanics and biomedical engineering 2010
Amilcar Chagas Freitas Eduardo Passos Rocha Paulo Henrique dos Santos Ching-Chang Ko Manoel Martín Erika Oliveira de Almeida

This study aimed to evaluate the influence of loading on a maxillary central incisor with the periodontal ligament (PDL) represented by 2D elastic beam elements using a 2D finite element analysis. Two models (M) were built varying the PDL representation: Mh (homogeneous PDL) and Mht (heterogeneous PDL with beam3 elements). Stress and displacements were determined for three loading conditions (L...

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