نتایج جستجو برای: chronometer

تعداد نتایج: 254  

Journal: :The Astrophysical Journal 2021

Abstract In this paper we analyze the implications of gravitational waves (GWs) as standard sirens on modified gravity models by using third-generation GW detector, i.e., Einstein Telescope. Two viable in f ( R ) theories within Palatini formalism are considered our analysis and ${f}_{2}({ }+\alpha \mathrm{ln}{ }-\beta $?> ), with ...

Journal: :Geosphere 2022

Abstract Advances in low-temperature thermochronology, and the wide range of geologic problems that it is used to investigate, have prompted routine use thermal history (time-temperature, tT) models quantitatively explore evaluate rock cooling ages. As a result, studies investigate topics ranging from Proterozoic tectonics Pleistocene erosion now commonly require substantial numerical modeling ...

ابراهیمی تکامجانی, اسماعیل, رجحانی شیرازی, زهرا, سنجری, محمد علی, معروفی, نادر, کاظم نژاد, انوشیروان,

Background and Objective: Several studies have reported significant disturbances in vertical posture during various standing and walking conditions, but there is little evidence about the behavior of related muscles in dynamic conditions such as external perturbation, so this study was done to investigate and to compare the delay in response of upper trapezius and sternocleidomastoid muscles as...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
manouchehr omidvary faculty member of ghazvin azad university. javad ne'matian assistant professor of tehran azad university zahra rafighi bs in health , kermanshah university of medical sciences. nadiya chaboksavar bs in health , kermanshah university of medical sciences.

introduction: noise is one of the hazardous factors in work places such as  textile industries. the objective of this study is to determine noise pollution in textile industries in kermanshah (2001). materials & methods: this study is  an analytical-descriptive one. the study was done in 2 steps. in the first step the characteristics of the work place & buildings were completely determined; the...

Alijani Renani , Houshang, Naghizadeh, Mohammad Mehdi, Nikrouz, Leila, Rasekh, Abdolrahman, Rostami, Shahnaz,

Background and Objective: Ignoring pain especially in infancy causes serious complications. Considering recent studies about sedative effect of breast-feeding and oral glucose on neonates, this study was performed to survey each method after neonatal period.  Materials and Methods: This study is a triple blind clinical trial on 211 infants aged 2, 4,and 6 months, which were randomly categor...

Journal: :Physics of the Dark Universe 2022

The cosmic deceleration parameter $q$ has been reconstructed in a non-parametric way using various combinations of recent observational datasets. Pantheon compilation the Supernova (SN) distance modulus data, Cosmic Chronometer (CC) measurements Hubble including full systematics and Baryon Acoustic Oscillation (BAO) data have considered this work. redshift $z_t$, where transition from past dece...

Journal: :Journal of Industrial Engineering and Management 2021

Purpose: This paper proposes model-based standard times estimates, using multiple linear regression, nonlinear optimization, and fuzzy systems in four real cases assembly lines. The work includes a description of the models comparison their performance with values obtained conventional chronometer method. These allow estimating without reconducting field studies.Design/methodology/approach: For...

Journal: :Hydrological Processes 2021

Flow velocity is one of the most important hydrodynamic variables for both channelized (rill and gullies) interrill erosive phenomena. The dye tracer technique to measure surface flow Vs based on measurement travel time a needed cover known distance. measured must be corrected obtain mean V using factor αv = V/Vs which generally empirically deduced. can influenced by method applied dye-tracer v...

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