an analytical nonlinear stress-strain model and a microscopic damage index for confined and unconfined concretes together with a macroscopic damage index for reinforced concrete (rc) structures under cyclic loading are proposed. in order to eliminate the problem of scale effect, an adjustable finite element computer program was generated to simulate rc structures subjected to cyclic loading. by...

In the seismic risk assessment of structures, two main random variables are involved, namely the vulnerability of the structure and the seismic action. The aim of the study presented here is to analyze the seismic behavior of the jacket-type offshore platforms as an expensive and vital structure. Furthermore, the influence of the incidence angle of the seismic action is also investigated by usi...

Memory is the cognitive ability that allows acquiring, store and recalling information. Anterior thalamic dysfunction creates memory deficits in rats and humans. Anterior thalamus forms a memory network in connection with the hippocampus. This connectivity profile proposes that ventrolateral and anterior thalamus may display a nexus between reminder and control functions, such as action or atte...

Objective(s): Exposing to stress may be associated with increased production of reactive oxygen species (ROS). Therefore, high level of oxidative stress may eventually give rise to accumulation of oxidative damage and development of numerous neurodegenerative diseases. It has been presented that brain-derived neurotrophic factor (BDNF) supports neurons against various neurodegenerative conditio...

abstract       background and objectives: diabetes induced oxidative stress plays an important role in pathological damage to the heart and liver by increased production of extracellular matrix. it is thought that the use of medicinal plants, particularly portulaca oleracea. l and regular exercise are effective. the aim of this study was to evaluate the effects of portulaca oleracea. l consumpt...

abstract diabetes mellitus is one of the major metabolic disorders. diabetes is recognized for severe complications including diabetic nephropathy, neuropathy and retinopathy. long-lasting effect of hyperglycemia results in increased oxidative stress. oxidative stress results from an imbalance between radical-generating and radical scavenging systems. increased oxidative stress has been shown t...

background and aims. although microwave irradiation has been used for disinfection of dental stone casts, there are concerns regarding mechanical damage to casts during the process. the aim of this study was to evaluate the effect of microwave irradiation on the compressive strength (cs) and diametral tensile strength (dts) of stone casts. materials and methods. in this in vitro study, 80 cylin...

today, lasers are widely used in biology and medicine, and the majority of healthcenters and hospitals utilize modern laser systems for diagnosis and therapy applications.researchers have introduced different medical applications for different lasers used in surgeries and other medical treatments. medical lasers can be categorized in both diagnosis and therapy branches. main difference between ...

Background and Aim: Pain is an experience often caused by tissue damage and is proportional to the severity of the injury. The role of underlying factors in severity of the pain such as prehospital factors have been discussed in some investigations. The current study aimed to assess the effect of different parameters on pain severity in patients with trauma. Methods and Materials/Patients: The...