منابع مشابه
Analysis of Credit-Strength of Cement Industry in Bangladesh
In this study it has been initiated to find out the credit strength and financial performance of cement industries in Bangladesh through investigating the financial report for the period from 2007 to 2011. Financial ratios are employed to measure the Liquidity (Working capital to Total Assets), Profitability (Retained Earnings to Total Assets), Efficiency (Earnings before Interest and Taxes to ...
متن کاملin vitro study of transverse strength of fiber reinforced composites
objective: reinforcement with fiber is an effective method for considerable improvement in flexural properties of indirect composite resin restorations. the aim of this in-vitro study was to compare the transverse strength of composite resin bars reinforced with preimpregnated and non-impregnated fibers. materials and methods: thirty six bar type composite resin specimens (3×2×25 mm) were const...
متن کاملCorrelation of pull-out strength of cement-augmented pedicle screws with CT-volumetric measurement of cement.
BACKGROUND Cement augmentation of pedicle screws increases fixation strength in an osteoporotic spine. This study was designed to determine the cement distribution and the correlation between the pull-out strength of the augmented screw and the cement volume within polyurethane (PU) foam. METHODS Twenty-eight cannulated pedicle screws (6×45 mm) (Peter Brehm, Erlangen, Germany) with four holes...
متن کاملStrength of the Cement-Bone Interface Relies More on Interface Contact Than Cement Penetration Depth
Introduction: In cemented total hip arthroplasty, the implant needs a mechanically stable cement-bone interface for its survival. This can be achieved by adequate cement penetration into the bone lacunar and trabecular spaces. Many studies have been conducted to investigate the strength of the cement-bone interface in relation to the amount of cement penetration, but mainly on a macro-scale [1]...
متن کاملInfluence of Pore Structure on Compressive Strength of Cement Mortar
This paper describes an experimental investigation into the pore structure of cement mortar using mercury porosimeter. Ordinary Portland cement, manufactured sand, and natural sand were used. The porosity of the manufactured sand mortar is higher than that of natural sand at the same mix proportion; on the contrary, the probable pore size and threshold radius of manufactured sand mortar are fin...
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ژورنال
عنوان ژورنال: Journal of the Society of Naval Architects of Japan
سال: 1980
ISSN: 1884-2070,0514-8499
DOI: 10.2534/jjasnaoe1968.1980.148_303