نتایج جستجو برای: particle reinforcement

تعداد نتایج: 214586  

Journal: :international journal of high risk behaviors and addiction 0
marjan alemikhah islamic azad university, torbat-e-jam branch, torbat-e-jam, ir iran farhad faridhosseini psychiatry and behavioral sciences research center, ibn-e-sina hospital, mashhad university of medical sciences, mashhad, ir iran; psychiatry and behavioral sciences research center, ibn-e-sina hospital, mashhad university of medical sciences, mashhad, ir iran. tel: +98-9155115502, fax: +98-5137112723 hassan kordi physical education and sport science department, ferdowsi university, mashhad, ir iran morad rasouli-azad shahid beheshti university of medical science and health services, tehran, ir iran najmeh shahini psychiatry and behavioral sciences research center, student research committee, ibn-e-sina hospital, faculty of medicine, mashhad university of medical sciences, mashhad, ir iran

conclusions the personality patterns of patients dependent on methamphetamines were different from the controls. these people have a high sensitivity to punishment cues, such as being compared in social conditions and a tendency for reinforcement and reward, because of their higher sensitivity in the behavioral inhibition and activation systems. results the methamphetamine dependent group had a...

2016
Masahito Toyonaga Patchanee Chammingkwan Minoru Terano Toshiaki Taniike

Grafting terminally functionalized polypropylene (PP) to nanofillers provides well-defined PP-based nanocomposites plausibly featured with a physical cross-linkage structure. In this paper, a series of PP-grafted silica nanoparticles (PP-g-SiO2) were synthesized by varying the number of grafted chains per silica particle, and influences of the number and the molecular weight of grafted chains w...

2015
S. Carretero-Palacios M. E. Calvo H. Míguez

We report on the numerical analysis of solar absorption enhancement in organic-inorganic halide perovskite films embedding plasmonic gold nanoparticles. The effect of particle size and concentration is analyzed in realistic systems in which random particle location within the perovskite film and the eventual formation of dimers are also taken into account. We find a maximum integrated solar abs...

1999
Y. Cai D. Taplin M. J. Tan W. Zhou

Metal matrix composite (MMC) technology can improve the service performance of matrix metals and alloys. Most magnesium alloy based MMCs are produced via a casting process, therefore the casting microstructures are of vital importance to their performance in service. The formation of microstructure during solidification of MMCs is mainly influenced by four factors: nucleation (or its absence) o...

Journal: :international journal of nano dimension 0
s. a. khorramie department of chemistry, north tehran branch, islamic azad university, tehran, iran. m. a. baghchesara department of metallurgy & materials engineering, masjed soleyman branch, islamic azad university, masjed soleyman, iran. r. lotfi department of chemistry, north tehran branch, islamic azad university, tehran, iran. sh. moradi dehagi department of chemistry, north tehran branch, islamic azad university, tehran, iran.

nanocrystalline zro2 with particle size of about 38 nm was directly synthesized by sol-gel auto-combustion method. the overall process involved three steps: formation of homogeneous sol at 50-55°c; formation of dried gel at 110°c, and combustion of the dried gel at 400°c. experiments revealed that zro2 dried gel derived from glycine (fuel) and nitrate sol exhibited self propagating combustion a...

2013
Tejeet Singh Harmanjit Singh

Creep behavior of thick-walled functionally graded cylinder consisting of AlSiC and subjected to internal pressure and high temperature has been analyzed. The functional relationship between strain rate with stress can be described by the well known threshold stress based creep law with a stress exponent of five. The effect of imposing non-linear particle gradient on the distribution of creep s...

2014
Dan Zhu Mingxia Gao Hongge Pan Yi Pan Yongfeng Liu Shouquan Li Hongwei Ge Ningxiang Fang

Dense silicon carbide (SiC) matrix composites with SiC whiskers and particles as reinforcement were prepared by infiltrating molten Si at 1550 °C into porous preforms composed of pyrolysed rice husks (RHs) and extra added SiC powder in different ratios. The Vickers hardness of the composites showed an increase from 18.6 to 21.3 GPa when the amount of SiC added in the preforms was 20% (w/w), and...

2015
Yu Qian

Geogrids provide reinforcement for aggregate materials through interlocking between granular particles and geogrid apertures. The reinforcement or stabilization effect of a geogrid can be quite different when used with similar aggregate types but having different particle size distributions. This paper describes recent research efforts at the University of Illinois focused on triaxial compressi...

In this research, Al-Ni particle composite strips are formed by accumulative roll bonding (ARB) process using Al strips and Ni powder. The rule of ARB cycles and volume percentage (Vol%) of Ni powder on the microstructure, wear resistance and mechanical properties of the formed composites are investigated. According to the tensile test results, the yield stress and tensile strengths of the Al -...

2006

The use of externally bonded Steel-Reinforced Polymer (SRP) and Steel Reinforced Grout (SRG) composites is a promising new technology for increasing the flexural and shear capacities of reinforced concrete (RC) members. The reinforcement system in these composites is a sheet made up of unidirectional cords consisting of tightly wound ultra high strength steel wires. The reinforcement can be mol...

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