نتایج جستجو برای: digital system

تعداد نتایج: 2459793  

Nirmal Kumar Vajravelu Ashok,

Background: Early and non-invasive determination of blood glucose level is of great importance. We aimed to present a new technique to accurately infer the blood glucose concentration in peripheral blood flow using non-invasive optical monitoring system. Methods: The data for the research were obtained from 900 individuals. Of them, 750 people had diabetes mellitus (DM). The system was ...

Alieh Sadat Javadzadeh Haghighat, Fatemeh Shahsavari, Milad Malekshoar, Seiedeh Saeideh Mohtavipour, Seiedeh Tahereh Mohtavipour,

Introduction: Various systems for intraoral digital radiography have been available as an alternative to film–based radiography. In consideration of several advantages of digital radiography such as less patient absorbed dose, manipulation of im‌age quality and elimination of processing, it has been extensively used in different fields of denti‌stry in recent years. The purpose of this study wa...

Journal: :desert 0
h.r. keshtkar msc. graduate, university of tehran, karaj, iran h. azarnivand professor, faculty of natural resources, university of tehran, karaj, iran h. arzani professor, faculty of natural resources, university of tehran, karaj, iran s.k. alavipanah professor, faculty of geography, university of tehran, tehran, iran f. mellati instructor, faculty of environment and natural resources, ferdowsi university, mashhad, iran

land cover is one of basic data layers in geographic information system for physical planning and environmentalmonitoring. digital image classification is generally performed to produce land cover maps from remote sensing data,particularly for large areas. in the present study the multispectral image from irs liss-iii image along with ancillary datasuch as vegetation indices, principal componen...

Journal: :iranian endodontic journal 0
solmaz valiozadeh shahid beheshti university of medical sciences maryam khosravi shahid beheshti university of medical sciences zeynab azizi shahid beheshti university of medical sciences

introduction: vertical root fracture (vrf) is a common failure in endodontically treated teeth. due to vrf’s poor prognosis, a reliable and valid detection method is critical for treatment planning. conventional and digital radiographs are limited in vrf detection. recently, cone beam ct (cbct) system has been introduced. this study aimed to compare the diagnostic accuracy of these three imagin...

Journal: :ماشین های کشاورزی 0
افشین زینلی عبدالعلی فرزاد محمدحسین آق خانی

torque, speed, and power as mechanical variables are associated with the functional performance of any rotating machinery. the real-time performance and the efficiency of a machine can be determined with on-line measurement of these parameters. in this investigation a rotary torque meter (transducer) was constructed from strain gauge sensors for measuring the torque of rotating shafts. the syst...

Journal: :مهندسی بیوسیستم ایران 0
سمیه امرایی دانشجوی کارشناسی ارشد دانشکده مهندسی زراعی و عمران روستایی، گروه مکانیک بیوسیستم، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان سامان آبدانان مهدی زاده دانشگاه رامین خوزستان سمیه سالاری استادیار دانشکده علوم دامی و صنایع غذایی، گروه علوم دامی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان

the purpose of this study was to identify daily changes in body weight of broiler chickens using image processing and multi-regression analysis. therefore, thirty 1-day-old broiler chickens were reared under standard rearing condition and after acquiring images they were weighted, individually. from 2490 digital images, six features (perimeter, area convex, major axis, minor axis, eccentricity)...

Journal: :The Journal of Korean Institute of Electromagnetic Engineering and Science 2009

Saeed Olyaee, Shahram Mohammad Nejad,

In this paper, we present a high accuracy laser range finder and velocimeter using ultra-fast time-to-digital converter (TDC). The system operation is based on the measuring the round-trip time of a narrow laser pulse. A low-dark current high-speed PIN photodiode is used to detect the triggered laser beam and to produce start signal. The pulsed laser diode generates 45W optical power at 30ns du...

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