نتایج جستجو برای: leveling combined with gravity measurements determines potential differences

تعداد نتایج: 9860523  

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2007
Rael L Bernstein Charles B Preston Judith Lampasso

INTRODUCTION The orthodontic technique favored by a clinician frequently determines how a deep curve of Spee (COS) is leveled. The primary purpose of this investigation was to confirm radiographically the long-term effectiveness of a continuous archwire technique--the Alexander discipline--in leveling the COS in patients with Class II Division 1 deep-bite malocclusions treated without extractio...

Journal: :Dental press journal of orthodontics 2013
Alael Barreiro Fernandes de Paiva Lino Julio Wilson Vigorito

OBJECTIVE This study aimed at comparing the distocervical angulations of upper second molars crowns of groups with normal occlusion and with Angle Classes I and II malocclusions. Additionally, it aimed to analyze the changes occurring after alignment and leveling performed with MBT technique. METHODS The sample of normal occlusions comprised 32 lateral teleradiographs, while the sample of mal...

Journal: :Journal Of Geophysical Research: Space Physics 2021

Over the last 20 years, a large number of instruments have provided plasma density measurements in Earth's topside ionosphere. To utilize all collected observations for empirical modeling, it is necessary to ensure that they do not exhibit systematic differences and are adjusted same reference frame. In this study, we compare satellite from Gravity Recovery Climate Experiment (GRACE), Constella...

Journal: :Frontiers in Earth Science 2023

Determination of the Earth’s gravity field and geopotential value is one fundamental topics in physical geodesy. Traditional terrestrial precise leveling measurements can be used to determine values at a local or regional scale. However, recent developments optical atomic clocks have not only rapidly improved science but also contributed applied research. The latest generation approaching accur...

Journal: :Journal of the Japan Society for Precision Engineering 2005

2008
M. Demianski

Aims. To study cosmological models in scalar tensor theories of gravity with power law potentials as models of an accelerating universe. Methods. We consider cosmological models in scalar tensor theories of gravity that describe an accelerating universe, and we study a family of inverse power law potentials, for which exact solutions of the Einstein equations are known. We also compare theoreti...

Journal: :ISPRS Int. J. Geo-Information 2013
Kirsi Karila Mika Karjalainen Juha Hyyppä Jarkko Koskinen Veikko Saaranen Paavo Rouhiainen

It is well known that the most accurate method to detect changes of height is the geodetic precise leveling method. Due to the high demand work and time needed for precise leveling alternative methods are studied to obtain high quality height information. Differential SAR interferometry techniques such as the Persistent Scatterer Interferometry (PSI) method are studied to detect millimeter leve...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1388

the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...

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