نتایج جستجو برای: reproducibility of measurements

تعداد نتایج: 21185698  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

2012
Mariano Herrero-Climent Matteo Albertini Jose V. Rios-Santos Pedro Lázaro-Calvo Ana Fernández-Palacín Pedro Bullon

UNLABELLED Few studies assess repeatability and reproducibility in registers of resonance frequency analysis (a value of dental implant stability). OBJECTIVE Few studies assess repeatability and reproducibility in resonance frequency analyses (implant stability evaluation). This study is aimed at assessing reliability (repeatabilty and reproducibility) in the Osstell Mentor® system using the ...

Journal: :iranian journal of medical physics 0
zahra anjomani m.sc. in medical physics, nuclear engineering dept., shahid beheshti university, tehran, iran hasan nedaie assistant professor, radiotherapy physics dept., tehran university of medical science, tehran, iran majid shariari associate professor, nuclear engineering dept, shahid beheshti university, tehran, iran

introduction: nowadays new radiochromic films have an essential role in radiotherapy dosimetry. properties such as high sensitivity, good reproducibility, high spatial resolution, easy readout and portability have made them attractive for dosimetry, especially in high-dose-gradient regions. material and methods: in this study, electron-beam dose distributions in homogenous and heterogeneous pha...

Journal: :Heart 1998
Y Gang X H Guo R Crook K Hnatkova A J Camm M Malik

OBJECTIVE To assess the stability and reproducibility of computerised QT dispersion (QTd) measurement in healthy subjects, as this is presently being incorporated into commercial electrocardiographic systems. METHODS 70 healthy volunteers (mean (SD) age 38 (10) years, 35 men, 35 women) with a normal 12 lead electrocardiogram (ECG) were studied. From each subject, 70 ECG recordings were taken ...

Journal: :journal of dentistry, tehran university of medical sciences 0
l. khojastehpour h. khosropanah mj. kharazifard

statement of problem: digital subtraction radiography (dsr) needs reproducible alignment between the x-ray source, the object, and the film for obtaining identical projections of the same anatomic region. purpose: the aim of this study was to evaluate the effect of bite registrations (placed on individual bite blocks) on the reproducibility of parallel periapical radiographs, obtained every 2 m...

Journal: :The British journal of ophthalmology 1998
A Waldock M J Potts J M Sparrow W S Karwatowski

AIMS To evaluate the reproducibility of the retardation values (change in polarisation) obtained with the scanning-laser polarimeter in a series of normal subjects and glaucoma patients. To improve the analysis of the raw data by devising and evaluating a blood vessel removal algorithm. METHODS Scanning laser polarimetry was performed on 10 normal subjects and 10 glaucoma patients. A series o...

2014
Mehmet Kola Hikmet Duran Adem Turk Suleyman Mollamehmetoglu Ahmet Kalkisim Hidayet Erdol

Purpose. To assess the repeatability and reproducibility of ocular biometry and intraocular lens (IOL) power measurements obtained by ophthalmology residents using an AL-Scan device, a novel optical biometer. Methods. Two ophthalmology residents were instructed regarding the AL-Scan device. Both performed ocular biometry and IOL power measurements using AL-Scan, three times on each of 128 eyes,...

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