نتایج جستجو برای: response curve

تعداد نتایج: 1091866  

Journal: :journal of structural engineering and geo-techniques 2012
ahmad fahimifar masoud ranjbarnia

this paper addresses the problem of quantifying the mechanical contribution of rockbolts installed systematically around tunnels (regularly spaced around the tunnel) excavated in rock masses. assuming that the mechanical contribution of grouted rockbolts is that of increasing internal pressure within a broken rock mass, a new procedure for computation of ground response curves for a circular tu...

Journal: :international journal of civil engineering 0
s. f. eftekharzadeh sepahbod gharani ave., shahid kalantari st., no.65, 1598846611 tehran, iran. a. khodabakhshi sanaee ave., 18th st., no.67, fl.2, 1585884683 tehran, iran.

the previous studies show that a high percentage of traffic accidents take place in two-lane rural highways and most of which happen at horizontal curves. meanwhile the horizontal alignment is often subject to hard topographic conditions where because of economic aspects designers are forced to design horizontal curves at grades. vertical angle of longitudinal slope reduces the normal force of ...

A. Mahmoudzadeh Emamchai, H. Mozdarani, S. Mohammadifrad,

Premature Chromosome Condensation (PCC) appears to have a possible utility for biological dosimetry purposes. The PCC technique may be adapted for cases of suspicion of overexposure where sampling is performed at least one day after an accident. For this purpose, human blood samples were exposed in vitro to 60Co up to 10 Gy and the PCC technique was performed immediately after irradiation. Anal...

Transformers are one of the most valuable assets of power systems. Maintenance and condition assessment of transformers has become one of the concerns of researchers due to huge number of transformers has been approached to the end of their lifetimes. Transformer’s lifetime depends on the life of its insulation and the insulation’s life is strongly influenced by its moisture attraction as well....

K. Adinehvand, M.H. Zahmatkesh, M.R Aghamiri, S. Bagheri, Sh. Akhlaghpour,

Background: The purpose of this study was to evaluate the dependency of MAGICA polymer gel dosimeter response (R2) on different electron energies as well as on different mean dose rate for a standard clinically used linear accelerator. Materials and Methods: The sensitivity of the dosimeter was represented by the slope of calibration curve in the linear region measured for each modalit...

Ahmad Fahimifar Masoud Ranjbarnia,

This paper addresses the problem of quantifying the mechanical contribution of rockbolts installed systematically around tunnels (regularly spaced around the tunnel) excavated in rock masses. Assuming that the mechanical contribution of grouted rockbolts is that of increasing internal pressure within a broken rock mass, a new procedure for computation of ground response curves for a circular tu...

Journal: :iranian journal of medical physics 0
mohammad javad t ahmasebi associated professor, medical physics & radiotherapy dept., golestan hospital, ahwaz university of medical sciences, ahwaz, iran mohammad ali behrooz professor, medical physics dept., ahwaz university of medical sciences, ahwaz, iran shole arvandi assistant professor, radiotherapy & oncology dept., golestan hospital, ahwaz university of medical sciences, ahwaz, iran davood khezerloo m.sc. medical physics dept., ahwaz university of medical sciences, ahwaz, iran mojtaba karbalai m.sc. medical physics dept., golestan hospital, ahwaz university of medical sciences, ahwaz, iran

introduction: nowadays,  considerable developments  in  the field  of  radiotherapy have  been  achieved.  they  include  the  advances  made  in  the  equipments  and  treatment  planning  techniques  which  require  highly complex calculations. such achievements have made it possible to treat cancer patients not only  with  higher  radiation  dose  but  also  with  higher  precision  and  con...

Photosynthesis is an essential part of the plant function and metabolism and a number of herbicides inhibit certain photosynthetic activities. The aim of this study was to evaluate the effect of some herbicides including Topik, Titos, Equip, Mister, Lumax, Bromicide and Oltima on the photosynthetic efficiency of three corn cultivars (CC-260, 400, 704) in response to salicylic acid (SA) treatmen...

ژورنال: سنجش و ایمنی پرتو 2019

In the current research, hydroxyapatite samples, synthesized by hydrothermal methods was studied from the perspective of thermoluminescence dosimetry. The results of the study were compared and studied with different aspects of dosimetry, including dose-response variations of synthesized samples, degree of its linearity, and the percentage of response fading, as well as the position of the main...

اسدزاده وسطی کلایی , سکینه, اسفندیاری , بهزاد, تشفام , مسعود, فرزین , داوود,

Background and Purpose: NO is a short-lived gas molecule generated by degradation of L-arg to citrulline and by the activation of enzyme NOS Ca2+/calmodulin-dependent. There are multiple NOS isoforms that strongly are expressed in skeletal muscle, suggesting the crucial role of NO in regulating muscular metabolism and function. In this study, the effect of L-arginine was examined at the neuromu...

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