نتایج جستجو برای: rubber bumpers

تعداد نتایج: 17592  

ژورنال: مواد پرانرژی 2014
غفوری, مرتضی, نوآموز, مرتضی,

In order to preserve structure and also achieve the desired thrust rocket motor, engine Case temperature should be prevented increase excess.This operation the can be done by Insulation. EPDM rubber because of advantages such as low specific weight, improve aging properties, as long as thermal insulation for solid propellant motors case bond Introduced and its properties are investigated in thi...

2011
J. A. RAFALSKI P. M. HOLLINGSWORTH

Heritability and interactions of yield and growth traits were assessed in Hevea brasiliensis using full-sib progenies and clonal populations. Using parent-offspring regression, annual mean rubber yield (ARY) and summer yield (SY) showed moderate to high heritability (ARY, h2 =34–56%; SY, h2 =36–52%). Among the yield components, girth exhibited low to moderate heritability (h2 =17–36%) while bra...

2010
Hao L. Tang John M. Regan Shirley E. Clark Yuefeng F. Xie

Crumb rubber media have been beneficially invented for ballast water and tertiary wastewater treatment. There is a critical need for precise prediction of clean-bed head loss for engineering design purposes. Pilot crumb rubber filters were tested to study their clean-bed head loss under the influences of three design and operational parameters media size, media depth, and filtration rate . Data...

Journal: :iranian journal of pharmaceutical sciences 0
babak shokri shahid beheshti university, gc, laser and plasma research institute, tehran, iran, shahid beheshti university, gc, physics department, tehran, iran seyyed iman hosseini shahid beheshti university, gc, laser and plasma research institute, tehran, iran, mehdi sharifian shahid beheshti university, gc, laser and plasma research institute, tehran, iran,

wetability of biocompatible polymers can be improved by plasma surface modification. the purpose of this study was to surface modify an experimental poly (dimethylsiloxane) rubber (pdms) material in order to improve its wetability and biocompatibility. surface properties of the pdms were characterized using contact angles measurement for wetability analysis. samples of experimental silicone rub...

1992
Min Seok Rang Young Kug Ham Hong Kyu Chung Rae-Hong Park Gwi-Tae Park

This paper discusses the recognition of raised alphanumeric markings on rubber tires for their classification. The main subject of this paper is the finding, separating, and recognizing the characters raised on rubber tires, which is different from the recognition of printed characters. The complter simulation result shows that the proposed system can be successfully applied to the industrial a...

2016
Julie Charles Suganthi Muthusamy

The study aims for a comparative study of butyl rubber (IIR) and bromobutyl rubber (BIIR) based on spectroscopic, dielectric and thermal characterization. Using FTIR, complete vibrational analysis of butyl rubber and bromobutyl rubber are made available which confirms their chemical structure and the functional groups present in them. The effect of microwave frequency, namely 10 GHz and 26 GHz ...

2006
L. FALK PAUL E. STEINER

In previously reported experiments, the car cinogenic potency for mice of extracts of processed rubber was traced to the presence of 3,4-benz pyrene and related compounds (13). A search for the origin of these hydrocarbons was next under taken. Samples of crude rubber, both natural and synthetic, did not contain any of these hydrocar bons when they were sought by extraction, chro matography, an...

Journal: :The Journal of trauma 2004
Rosanne Naunheim Heather Parrott John Standeven

BACKGROUND In an attempt to decrease injuries, newer forms of artificial turf have been marketed. The purpose of this study was to determine whether a new shredded rubber-based turf improves impact attenuation. METHODS An instrumented computerized impact recording device (IRD, Techmark, Lansing, MI) was dropped 20 times from a height of 48 inches onto five types of turf used by a professional...

2014
Abhra Majumder Ritwik Chattaraj Srijan Bhattacharya Sritama Roy

Pressure conductive rubber has become a subject of interest in the field of slip or pressure sensor development because of it’s high sensitivity, flexibility and light weightiness. It is also been used where soft and flexible solder less connector is required. But this flexibility also creates some difficulties for making contacts with electrodes. Generally conducting glue or lamination or elec...

2007
Herbert W. Müllner Silke Koch Josef Eberhardsteiner

The dimensioning of injection heads for the extrusion of rubber profiles is exclusively based on empiric knowledge of the non-linear flow behavior of elastomers. Thus, the design of injection heads is carried out with subject to the used rubber compound, whereas the geometry of the appropriate profile is achieved by empiric adaptation of the extrusion die. This was one of the motivations for a ...

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