Purpose. To determine the rigidity effect of changes in mine geophones mounting on frequency response recorded seismoacoustic signals. Methodology. Operational calculus and analysis are used. Findings. The dependences characteristics under coupling conditions with rock studied. A possibility is shown qualitative change signal when changing installation case a geophone; moreover, increase can re...

Introduction:Temporomandibular disorders (TMDs) are referred to signs and symptoms involving masti‌catory muscles, temporomandibular joint and rele‌vant structures. Having been prevalent noticeably, we decided to evaluate the frequency of TMD, among patients referred to the dental clinic of Guilan university of medical sciences. Materials and Methods: In this cross-sectional study, a sample of ...

This study was undertaken to assess the frequency of decreased bone mineral density and its risk factors as well as its impact on the quality of life during childhood among hemophiliac patients. Materials and Methods: Thirty seven children with severe hemophilia A and B, referred to Mofid Children’s Hospital during 2010, were selected. For all patients the joint score, body mass indexes, bone...

objective: ionizing radiation produces free radicals which induce dna damage and cell death. origanum vulgare leaf extract (ovle) is a natural compound and its capability of scavenging free radicals and its antioxidant activity have been demonstrated by many researchers. in this study, using micronucleus assay, radioprotective effect of ovle against clastogenic and cytotoxic effect of gamma irr...

In two recent studies from Israel, Silverberg and colleagues noted that anaemia was common in chronic heart failure (CHF). 2 Moreover, treatment with combined erythropoietin and intravenous ferrous sulfate not only increased haemoglobin concentrations but, more importantly, was associated with improvements in cardiac function, New York Heart Association (NYHA) functional class, renal function, ...

spectral decomposition is a powerful tool for analysis of seismic data. fourier transform determines the frequency contents of a signal. but for analysis of non-stationary signals, 1-d transform to frequency domain is not sufficient. in early years, transforming of seismic traces into time and frequency domain was done via windowed fourier transform, called a short time fourier transform (stft)...