نتایج جستجو برای: horizontal cementing

تعداد نتایج: 62908  

Journal: :Energies 2023

The main challenge in deviated and horizontal well drilling is hole cleaning, which involves the removal of drill cuttings maintaining a clean borehole. Insufficient cleaning can lead to issues such as stuck pipe incidents, lost circulation, slow rate penetration (ROP), difficult tripping operations, poor cementing, formation damage. advancements real-time evaluation for complex wells also trou...

Journal: :The Journal of the Dental Association of South Africa = Die Tydskrif van die Tandheelkundige Vereniging van Suid-Afrika 1975
C F Valcke

Available technical methods do not permit the fabri­ cation of dental restorations outside the mouth which will not expose the cementing medium to the influence of the oral fluids. Although meticulous craftsmanship may attain very high standards of marginal adap­ tation in such restorations the solubility and disinte­ gration of cementing media is still considered suffi­ ciently important to wa...

2008
Dinesh Singh Rana

A comprehensive analysis of various types of cementing media used to cement various dental restorations such as crowns, bridges etc. are presented. Effects of various cementing media on the retention of dental post in the root canal have been estimated. The system is mainly consists of strain gauges mounted on a cantilever, a specially design amplifier, data acquisition system (ADC0809), Micro-...

Journal: :Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 2006

Journal: :Acta orthopaedica Belgica 2006
Konstantinos Panousis Kenneth A Young Peter Grigoris

We report a complication of contemporary cementing technique in total hip arthroplasty, that is, extensive retrograde filling with polymethylmethacrylate cement of the nutrient artery of the femur.

Journal: :The Journal of bone and joint surgery. American volume 2002
Mark D Lazarus Kirk L Jensen Carleton Southworth Frederick A Matsen

BACKGROUND Radiolucent lines about the glenoid component of a total shoulder replacement are a common finding, even on initial postoperative radiographs. The achievement of complete osseous support of the component has been shown to decrease micromotion. We evaluated the ability of a group of experienced shoulder surgeons to achieve complete cementing and support in a series of patients managed...

Ali Reza Mortazavi Hamid Soltanian,

It has long been known that temperature during circulation and after cement placement is one of the most important parameters for slurry design and the success in cement production. Conventional cements and low density cement slurries usually take a long time to set and cannot provide significant compressive strength. Therefore, it is important to design appropriate low density cement slurries ...

As worldwide demand of hydrocarbon is growing fast, the oil and gas companies have been forced to explore reservoirs with more hostile conditions, such as high-pressure, high-temperature conditions. Improved technology, material selection and testing procedures are required to overcome the common problems in these conditions. One of the main phases of well construction is cementing job. Appropr...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2005
Andree Piwowarczyk Hans-Christoph Lauer John A Sorensen

OBJECTIVES To evaluate microleakage and marginal gaps in full cast crown restorations bonded with six different types of cementing agents. METHODS Sixty non-carious human premolars and molars were prepared in a standardized manner for full cast crown restorations. The mesial and distal margins were located in dentin, while the vestibular and palatal/lingual margins were located in enamel. Cro...

2009
Dennis Janssen Jantien van Aken Thierry Scheerlinck Nico Verdonschot

BACKGROUND AND PURPOSE Two contradictory cementing techniques (using an undersized stem versus a canal-filling stem) can both lead to excellent survival rates, a phenomenon known as the "French paradox". Furthermore, previous studies have indicated that the type of bone supporting the cement mantle may affect implant survival. To further evaluate the mechanical consequences of variations in cem...

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