نتایج جستجو برای: technical elements of ceramic

تعداد نتایج: 21184965  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

ژورنال: طب کار 2016
برخورداری, ابوالفضل, دهقان, علی, رنجبر, اکرم, مهر پرور, امیر هوشنگ, کشوری شاد, مهری,

Introduction: The aim of this study was evaluating oxidative stress biomarkers in workers in ceramic and glazed tiles industry. These workers are exposed to various kinds of occupational harmful agents especially metal oxides including silicon, lead, aluminum, chromium, cobalt, titanium, zinc, cadmium oxides and other harmful elements such as sound, infrared radiation, radon gas and heat stress...

Journal: :Theory and Methods of Physical Education and Sports 2014

Journal: :Clinical implant dentistry and related research 2015
Anja Zembic Alexander Otto Hermann Philipp Christoph Hans Franz Hämmerle Arnold Wohlwend Irena Sailer

BACKGROUND Clinical studies on zirconia abutments report very good survival rates and biological and technical results, but few have an observation period of more than 5 years. PURPOSE The aim of this study was to assess the long-term performance of customized zirconia implant abutments supporting all-ceramic crowns. MATERIALS AND METHODS Twenty-seven patients receiving 54 single implants w...

Journal: :The International Journal of Advanced Manufacturing Technology 2022

RB-SiC ceramic is one of the most important and useful materials as optical precision elements in many scientific research fields. In this paper, a novel cold atmospheric plasma (CAP) process via oxygen (O2), which based on grinding surface technology to modify at room temperature for with combination oxidation modification, proposed. To identify performance proposed method modification fabrica...

2017
Iulian Antoniac Mihai Negrusoiu Mihai Mardare Claudiu Socoliuc Ancuţa Zazgyva Marius Niculescu

INTRODUCTION In younger patients, ceramic-on-ceramic (CoC) bearing surfaces are usually recommended for total hip replacement (THR) because of their low wear rate and longer expected functional life. Although technical advancements have reduced the risk of ceramic bearings fracture, this complication remains a major concern. CASE DESCRIPTION We present the case of a 56-year-old patient underg...

Journal: :The Journal of the Acoustical Society of America 1956

Journal: :Clinical oral implants research 2016
Nadine Fenner Christoph H F Hämmerle Irena Sailer Ronald E Jung

AIM The aim of this prospective cohort study was to evaluate clinical, radiographic, technical, esthetic, and patient-centered outcomes of implants using two different restoration materials after 5-9 years. MATERIALS AND METHODS The study included 28 patients (test group: 13 patients with all-ceramic crowns on aluminum oxide-based abutments; control group: 15 patients with metal abutments on ...

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