نتایج جستجو برای: coronal

تعداد نتایج: 13590  

2015
Masayuki Ishikawa Kai Cao Long Pang Kota Watanabe Mitsuru Yagi Masafumi Machida Yasuyuki Fukui Morio Matsumoto

BACKGROUND Controversy still exists around surgical strategies for Lenke type 1C and 2C curves with primary thoracic and compensatory lumbar curves in adolescent idiopathic scoliosis (AIS). The benefit of selective thoracic fusion (STF) for these curve types is spontaneous lumbar curve correction while saving more mobile lumbar segments. However, a risk of postoperative coronal decompensation a...

2006
STEVEN R. CRANMER

We present a series of models for the plasma properties along open magnetic flux tubes rooted in solar coronal holes, streamers, and active regions. These models represent the first self-consistent solutions that combine: (1) chromospheric heating driven by an empirically guided acoustic wave spectrum, (2) coronal heating from Alfvén waves that have been partially reflected, then damped by anis...

Journal: :AJNR. American journal of neuroradiology 2014
S H Patel M E Cunnane A F Juliano M G Vangel M A Kazlas G Moonis

BACKGROUND AND PURPOSE The lateral rectus-superior rectus band is an orbital connective tissue structure that has been implicated in a form of strabismus termed sagging eye syndrome. Our purpose was to define the normal MR imaging and CT appearance of this band in patients without strabismus. MATERIALS AND METHODS Orbital MR imaging and CT examinations in 100 consecutive patients without stra...

Journal: :The journal of contemporary dental practice 2013
P V Ravi Chandra V Harikumar D Ramkiran M J N Krishna M Veerabhadra Gouda

BACKGROUND AND AIMS Microleakage has been identified as a significant problem with composite restorations because of interfacial gap formation which can result in tooth discoloration, recurrent caries, possible pulpal involvement and restoration replacement. Aim of this study is to evaluate the microleakage of self-etch adhesive system at the coronal and apical margins of class V resin composit...

Journal: :Journal of endodontics 2007
Mario Roberto Leonardo Frederick Barnett Gilberto J Debelian Regina Karla de Pontes Lima Léa Assed Bezerra da Silva

The purpose of this study was to evaluate in vivo the response of the periradicular tissues after endodontic treatment and root filling with Epiphany/Resilon (Penntron Clinical Technologies, LLC, Wallingford, CT) or gutta percha and new Sealapex (SybronEndo, Glendora, CA) in dogs' teeth with or without coronal restoration. Teeth without coronal restorations were used to assess the influence of ...

2016
A. P. Rouillard

We study the link between an expanding coronal shock and the energetic particles measured near Earth during the Ground Level Enhancement (GLE) of 17 May 2012. We developed a new technique based on multipoint imaging to triangulate the 3-D expansion of the shock forming in the corona. It uses images from three vantage points by mapping the outermost extent of the coronal region perturbed by the ...

2009
Bart De Pontieu Scott W. McIntosh Viggo H. Hansteen Carolus J. Schrijver

The Sun’s corona is millions of degrees hotter than its 5,000 K photosphere. This heating enigma is typically addressed by invoking the deposition at coronal heights of non-thermal energy generated by the interplay between convection and magnetic field near the photosphere. However, it remains unclear how and where coronal heating occurs and how the corona is filled with hot plasma. We show tha...

Journal: :The journal of contemporary dental practice 2005
Hanan Balto Saad Al-Nazhan Khulood Al-Mansour Moneera Al-Otaibi Yunus Siddiqu

The aim of this study was to evaluate the integrity of the coronal seal of Temp-Bond and compare it to Cavit and IRM after post space preparation using S. faecalis as a microbial tracer. In addition, the affect of two methods of gutta percha removal on the apical seal of root canal fillings was also evaluated. Forty extracted human single rooted teeth were prepared chemomechanically and obturat...

2017
Anne CR Tanner Christine Kressirer Lina Faller Kristie Lake Floyd Dewhirst Alexis Kokarasb Bruce Paster Jorge Frias-Lopez

Dental caries results from altered microbial community activity in disease compared to health. Caries advanced into dentin was compared with coronal caries and caries-free sites. Oral bacterial samples were obtained from young children, placed in RNAlater and stored frozen. mRNAwas purified and sequenced on an Illumina NextSeq 500 platform. Gene sequences were aligned against taxa in HOMD and g...

2007
Valery M. Nakariakov

Wave and oscillatory activity is observed with modern imaging and spectral instruments in the visible light, EUV, X-ray and radio bands in all parts of the solar corona. Magnetohydrodynamic (MHD) wave theory gives satisfactory interpretation of these phenomena in terms of MHD modes of coronal structures. The paper reviews the current trends in the observational study of coronal oscillations, re...

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