نتایج جستجو برای: turbine drills

تعداد نتایج: 23009  

2017
Azade Harandi Fatemeh Mohammadpour Maleki Ehsan Moudi Maryam Ehsani Soraya Khafri

INTRODUCTION The aim of this study was to compare the dentine removing efficacy of Gates-Glidden drills with hand files, ProTaper and OneShape single-instrument system using cone-beam computed tomography (CBCT). METHODS AND MATERIALS A total of 39 extracted bifurcated maxillary first premolars were divided into 3 groups (n=13) and were prepared using either Gates-Glidden drills and hand instr...

Journal: :Studies in health technology and informatics 2005
Charles Y Ro Ioannis K Toumpoulis Robert C Ashton Celina Imielinska Tony Jebara Seung H Shin J D Zipkin James J McGinty George J Todd Joseph J Derose

BACKGROUND There currently exist several training modules to improve performance during video-assisted surgery. The unique characteristics of robotic surgery make these platforms an inadequate environment for the development and assessment of robotic surgical performance. METHODS Expert surgeons (n=4) (>50 clinical robotic procedures and >2 years of clinical robotic experience) were compared ...

2017
Yosuke Akiba Kaori Eguchi Nami Akiba Katsumi Uoshima

PURPOSE Zirconia is a good candidate material in the dental field. In this study, we evaluated biological responses against a zirconia drill using a bone cavity healing model. MATERIALS AND METHODS Zirconia drills, stainless steel drills, and the drilled bone surface were observed by scanning electron microscopy (SEM), before and after cavity preparation. For the bone cavity healing model, th...

2010
Michael Uchic Benjamin Peterson Venkatesh Krishnan Randy Helmink Scott Oppenheimer

Recent developments from the cast 718Plus® Metals Affordability Initiative (MAI) program will be presented and discussed. The objective of the program is to investigate and enable the use of 718Plus® (hereinafter referred to as 718Plus) in the form of investment castings by (1) increasing the allowable operating temperature by about 75°F as compared with conventional cast Alloy 718 and (2) achi...

2012
Matthew Barone

The proposed DOE/Sandia Scaled Wind Farm Technology Facility (SWiFT) hosted by Texas Tech University at Reese Technology Center in Lubbock, TX, will provide a facility for experimental study of turbine-turbine interaction and complex wind farm aerodynamics. This document surveys the current status of wind turbine wake and turbine-turbine interaction research, identifying knowledge and data gaps...

2015
Shyjo Johnson Sriram S Kumar

Wells turbine is a self-rectifying air turbine which is widely used in oscillating water column energy converter. The Wells turbine will always rotate in the same direction irrespective of the direction of the oscillating airflow. Furthermore the Wells turbine has a simple configuration and structure. This is why the Wells turbine is very commonly used for conversion of wave energy. At present ...

2018
Cédric Peeters Quentin Leclère Jérôme Antoni Jan Helsen

Journal: :international journal of energy and environmental engineering 2011
j.p yadav onkar singh

combined cycle performance can be improved by improving the performance of gas turbine based topping cycle. amongst various options the effective cooling of gas turbine blade for realizing the higher turbine inlet temperatures is one of the attractive options. the present paper deals with the thermodynam-ic analysis of advanced technology gas/steam combined cycle based power plant having closed...

Journal: :The Biochemical journal 1948
R Cecil A G Ogston

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