نتایج جستجو برای: compressive properties

تعداد نتایج: 885875  

Journal: :CoRR 2013
Youssef Mroueh Lorenzo Rosasco

We introduce q-ary compressive sensing, an extension of 1-bit compressive sensing. We propose a novel sensing mechanism and a corresponding recovery procedure. The recovery properties of the proposed approach are analyzed both theoretically and empirically. Results in 1-bit compressive sensing are recovered as a special case. Our theoretical results suggest a tradeoff between the quantization p...

2015
Tao Li Xisheng Weng Yanyan Bian Lei Zhou Fuzhai Cui Zhiye Qiu Teja Guda

OBJECTIVE This research investigated the mechanical properties and bioactivity of polymethylmethacrylate (PMMA) bone cement after addition of the nano-hydroxyapatite(HA) coated bone collagen (mineralized collagen, MC). MATERIALS & METHODS The MC in different proportions were added to the PMMA bone cement to detect the compressive strength, compression modulus, coagulation properties and biosa...

Amir Mahmoudzadeh Hasan Sousani,

With many years of construction and application of common concrete, researchers have always been searching for a better composition. One of the notable ideas for achieving such a composition is using recycled materials. One of the materials which is suitable for environment and constant development is damaged tires .For studying mechanical properties of concrete containing tire particles, a ser...

2014
Yongxiang Xu Yanyu Wei Jibin Zou Jianjun Li Wenjuan Qi Yong Li

Deep-sea permanent magnet motor equipped with fluid compensated pressure-tolerant system is compressed by the high pressure fluid both outside and inside. The induced stress distribution in stator core is significantly different from that in land type motor. Its effect on the magnetic properties of stator core is important for deep-sea motor designers but seldom reported. In this paper, the str...

Journal: :Dental materials journal 2010
Yoshiko Kondo Tomohiro Takagaki Makoto Okuda Masaomi Ikeda Yoshinori Kadoma Junichi Yamauchi Koichi Okada Alireza Sadr Toru Nikaido Junji Tagami

The aim of this study was to evaluate the effect of additional polymethyl methacrylate (PMMA) fillers on the physical properties of experimental resin composites. PMMA particles (d=30 µm) were added to an experimental methacrylate-based resin composite in five concentrations of 0, 2.0, 4.8, 9.1, and 23.1 wt%. Properties such as contact angle, water sorption and compressive strength were measure...

Journal: :Journal of biomechanical engineering 2012
Nathan T Balcom Britta Berg-Johansen Kristin J Dills Jennifer R Van Donk Gregory M Williams Albert C Chen Scott J Hazelwood Robert L Sah Stephen M Klisch

In vitro cultures with insulin-like growth factor-1 (IGF-1) and transforming growth factor-β1 (TGF-β1) have previously been shown to differentially modulate the growth of immature bovine articular cartilage. IGF-1 stimulates expansive growth yet decreases compressive moduli and increases compressive Poisson's ratios, whereas TGF-β1 maintains tissue size, increases compressive moduli, and decrea...

2009
Zhijian Li Xungai Wang Lijing Wang

This research is concerned with the mechanical and physical properties of hemp fibre reinforced concrete (HFRC). An experimental program was developed based on the statistical method of fractional factors design. The variables for the experimental study were: 1) mixing method; 2) fibre content by weight; 3) aggregate size; and 4) fibre length. Their effects on the compressive and flexural perfo...

ژورنال: مجله دندانپزشکی 2004
تهرانی صفت, مهدی, شهابی, سیما,

Statement of Problem: With due attention to the control of quality of dental materials and its role in improvement of quality and accuracy of treatment, in this research, Zoiiran made in Golchai company was evaluated according to international standards.Purpose: The aim of this study was the evaluation of properties of Zinc-oxide-eugenoi reinforced cement with trade name "Zoiiran".Materials and...

Journal: :Journal of dental research 1958
R G CRAIG F A PEYTON

THE elastic and mechanical properties of dentin were studied as early as 1895 by Black' who measured the compressive strengths of cubes of dentin and reported that a cube, 0.08 inch square, had an average compressive strength of 37,200 psi and an elastic deformation of 2.09 per cent when subjected to a load of 100 pounds (elastic modulus 0.8 x106 psi). Peyton, Mahler, and Hershenov2 reported av...

A. Jamshidi A. Zalooli H. Yeganehfar M. Khamehchiyan M.R. Nikudel

     Salt crystallization is one of the most powerful weathering agents that may cause a rapid change in the mechanical properties of stones, and thus limit their durability. Consequently, determining the mechanical properties of stones due to salt crystallization is important for natural building stones used in marine environmental and mild climatic conditions, which expose excessive salt crys...

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