نتایج جستجو برای: digital

تعداد نتایج: 307822  

H Montazer lotf elahi , M Dehghani, M Moeini, R Bardal,

Background and Aim: Cone beam computed tomography (CBCT) produces high-quality data in periodontal diagnosis and treatment planning. The aim of this study was to compare the accuracy of CBCT with intraoral digital and conventional radiography in the measurement of periodontal bone defects.  Methods and Materials: In this diagnostic research, two hundred and eighteen artificial osseous d...

This paper presents an adaptive digital resolution improvement method for extrapolating and recursive analog-to-digital converters (ADCs). The presented adaptively enhanced ADC (AE-ADC) digitally estimates the digital equivalent of the input signal by utilizing an adaptive digital filter (ADF). The least mean squares (LMS) algorithm also determines the coefficients of the ADF block. In this sch...

Journal: :journal of dental research, dental clinics, dental prospects 0
solmaz valizadeh shahid beheshti university of medical sciences, tehran, iran mohammad amin tavakoli shahid beheshti university of medical sciences, tehran, iran tara zarabian azad university of medical sciences, tehran, iran farzad esmaeili faculty of dentistry, tabriz university of medical sciences, tabriz, iran

background and aims. digital radiographs have some advantages over conventional ones. application of digital receptors is not routine yet. therefore, there is a need for digitizing conventional radiographs. the aim of the present study was to compare the diagnostic accuracy of digitized conventional radiographs by scanner and camera in detection of proximal caries. material and methods. three h...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
seiedeh tahereh mohtavipour oro-maxillofacial developmental diseases research center, department of oral and maxillofacial radiology, guilan university of medical sciences, dental faculty, rasht, iran fatemeh shahsavari department of oral & maxillofacial pathology, dental branch, islamic azad university, tehran, iran alieh sadat javadzadeh haghighat oro-maxillofacial developmental diseases research center, department of oral and maxillofacial radiology, guilan university of medical sciences, dental faculty, rasht, iran seiedeh saeideh mohtavipour department of pediatric dentistry, shahid beheshti university of medical sciences, dental faculty, tehran, iran milad malekshoar rasht, iran

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 im age quality and elimination of processing, it has been extensively used in different fields of denti stry in recent years. the purpose of this study wa...

Journal: :iranian journal of public health 0
abbas rasi elham behrangi bahamin attar zahra azizian

pachydermodactyly is a rare and benign disease that may be idiopathic, genetic, acquired as a response to repetitive trauma, or associated with several other acquired conditions often pushing the health caregiver to do a bunch of costly lab tests and diagnostic workups to rule out other entities. all health care givers must be aware about this disease for reassure the patients and cut unnecessa...

Journal: :iranian journal of child neurology 0
marjan shakiba assistant professor of pediatric pediatric endocrinology, mofid children hospital, shahid beheshti university of medical sciences, tehran, iran habibe nezhad bieglari pediatrician mohammad reza alaee associate professor of pediatric endocrinology, mofid children hospital, shahid beheshti university of medical sciences, tehran, iran

how to cite this article: shakiba m, nejad biglari h, alaee mr. digital and dental malformation and short stature in a patient with neurological problems: a variant of the oculodentodigital dysplasia syndrome or a new syndrome?iran j child neurol autumn 2012; 6(4): 51-54.   abstract several syndromes have been recognized with digital abnormality and cns involvement such as oculodentodigital dys...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1388

3bit از مجموع 12 bit کل adc در طبق? این mdac تولید می شود و برای این منظور از سیستم 2.5bit استفاده شده است که 1bit از 3bit تولید شده صرف error correction می شود و بعد از جمع با بیت طبق? بعد 1bit تولید می کند به همین دلیل مانند 0.5bit عمل می کند. همچنین خطای گین محدود اپ امپ را با استفاده از تغییر نسبت خازن فیدبک به خازن واحد اصلاح می کنیم که در این روش درصدی برای تغییر گین حلقه باز اپ امپ به طو...

Journal: Physical Treatments 2020

Background: Digital technologies, including mobile applications, websites, and wearable devices, like smartwatches are among the newest approaches in prevention, care, and treatment studies; they could provide public access to high-quality rehabilitation services. The current review study aimed to evaluate the effects of digital technologies for enhancing physical activity, as well as improving...

This paper aims to show the status of digital art in Iran and explain how the meaning of an artist has transformed in the digital age. The primary assumption of this paper is that the experience of digital art has again revived the collective experience in creating arts. Although, interactivity is considered to be the most important quality of digital art, their collective, collaborative and pr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1380

در این پروژه روشهای اندازه گیری انرژی الکتریکی به کمک وسایل نیمه هادی مورد بررسی قرار گرفته است دو روش پیوسته(آنالوگ ) و گسسته(دیجیتالی) با همدیگر مقایسه شده اند و بر روی روش استفاده از مدارات دیجیتالی تاکید شده است . adc های مختلف از لحاظ ساختار درونی آنها مورد ارزیابی قرار گرفته اند و با توجه به نیازهای سیستم گزینه مناسب adc همراه با dsp(digital signal processor) عملیات ثابت انتخاب شده است اج...

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