481 research outputs found
Interview with Sayed Nassar
No full textفي هذه المقابلة، يتحدث الكاتب سيد نصار، عن جولة الرئيس مبارك في الدول الخليجية بعد بدء رئاسته الرابعة. أجرت الحوار إيمان رافع.In this interview, writer Sayed Nassar talks about President Mubarak's trip to the Gulf nations after taking office for a fourth term. The interview was conducted by Iman Rafi
Effect of Autoclave Heating and Cooling Rates on Adhesively Bonded Lightweight Material Joints
No full textThis study investigates the effect of the rate of autoclave heating and cooling on the performance of bonded lightweight material single lap joints (SLJ) after they have been heat cycled at high relative humidity. Two different temperature ramp rates are used for the autoclave bonding of test joints. Joint performance is assessed in terms of the load transfer capacity (LTC) and the corresponding failure mode in a tensile-shear test. Three different combinations of Aluminium and Magnesium adherends are used in test samples using aliphatic polyether (polyurethane) film adhesive. The effect of heating rate on the peel strength of cured adhesive is also investigated. Data analysis and discussion are provided
Formulation of cohesive failure load for bonded single lap joints using coupled elasto-plastic stress diffusion model
No full textA constitutive elasto-plastic model with moisture diffusion is developed for determining the cohesive strength of adhesively bonded single lap joints with identical adherend materials and thicknesses under tensile-shear loading. Static maximum shear stress failure theory is used for determining the cohesive strength. A Fickian diffusion model is utilized in order to formulate a time- and location dependent shear modulus for the adhesive. The study shows that increased plastic strain due to moisture diffusion would increase the cohesive failure load of adhesively bonded single lap joints
MULTI-AXIAL FATIGUE OF SHEET METAL JOINTS UNDER CLAMP LOAD AND CYCLIC BENDING
No full textA validated Von-Mises stress-based model is presented for multi-axial fatigue evaluation of clamped sheet metal joints that are subjected to a cyclic bending stress additional to the compressive bearing stress in the bolted joint. Joint material, bolt preload level, and the amplitude level of the cyclic bending moment are studied for their effect on the fatigue life of the clamped sheet metal plate. Bolt tightening to a precise preload level is accomplished by using an ultrasonic instrument that has been mechanically pre-calibrated to convert the time delay of longitudinal ultrasonic wave reflection to a bolt elongation and corresponding preload value. Fatigue data is generated using an MTS fatigue testing system. Experimental and FEA results are fitted into a multi-axial model for predicting the fatigue behavior of the bolted joint. Discussion and data analysis are provided
Magnesium Sulfate Compared With Nifedipine for Acute Tocolysis of Preterm Labor: A Randomized Controlled Trial
No full text[No abstract available]King JF, 2003, COCHRANE DB SYST REV, V1; Lyell DJ, 2007, OBSTET GYNECOL, V110, P61, DOI 10.1097-01.AOG.0000269048.06634.35; Nassar AH, 2007, INT J GYNECOL OBSTET, V97, P148, DOI 10.1016-j.ijgo.2007.01.01133
Effect of thermally expandable particle additives on the mechanical and reversibility performance of adhesive joints
No full textThis paper provides an experimental investigation of the effect of Thermally Expandable Particle (TEP) adhesive
additive on the mechanical and reversibility performance of epoxy-bonded load single lap joints (SLJs). Joint
substrates are made of aluminum 6061 and woven carbon fiber reinforced plastic 0/90/0 substrates. TEP additive
is used for modifying the structural epoxy adhesive used in this study. An electrically charged RF coil is
placed around the joint bond area; generated electromagnetic field would heat the aluminum substrate which
would in turn heat the modified adhesive. Very large volumetric expansion of the hollow spherical Thermally
Expandable Particles (TEPs) would significantly reduce adhesive strength and lead to joint debonding under a
minimal load of 100 N. Various weight concentrations of the TEP in the range of 5% to 25% with particulate size
from 6 to 16 μm are used for investigating the effect on joint static and fatigue strength as well as the reversibility
performance. Measured time to achieve full debonding of the joint (under charged RF coil), is used for assessing
the reversibility performance
Tribology of threaded joints: Sustainable lubricants
No full textThe first part of this chapter emphasizes the importance of tribology in threaded fasteners. In particular, the main equations relating the tightening torque to the achievable axial preload in the screw are proposed. Contributions due to friction are discussed and analytically introduced. The following sections are focused on the main factors, including material, surface finishing, lubrication, and repeated tightenings, which usually affect the tribological response of bolted joints. The second part of the chapter tackles the experimental measurement of friction coefficients by suitable tools. In particular, the use of instrumented bushings or specifically developed testing rigs is discussed. Related formulas, geometry, and recommended layouts are also provided. The third and final part of the chapter presents recent research studies related to the effect of suitable lubrication on reducing friction and wear. Significant reduction is observed with multiple tightening and loosening cycles, which is followed by a beneficial effect of shot-peening that reduces friction even in dry conditions. Design guidelines are provided for suitable choice of peening parameters. The effect of joint system tribology on self-loosening is presented
RADUAN NASSAR, LEITOR DE ALMEIDA FARIA: RADUAN NASSAR, AN ALMEIDA FARIA READER
No full textRaduan Nassar is a reader of Almeida Faria, as revealed by the Portuguese author in the preface to the Brazilian edition of A Paixão, published by CosacNaify, in 2014. The same tension between the sacred and the profane that we read in A Paixão, by Almeida Faria, can also be found in Lavoura arcaica, by Raduan Nassar. Family relationships, in both narratives, exude passions, wills. The religious order within the constitution of the two families that have been archaically educated corresponds, in both works, to the obedience they dedicate to their two patriarchs: either to the pure patriarch of Lavoura arcaica, or to the profligate from A Paixão. The patriarchy paradigm maintains control of the primary powers in both families. Parents position themselves stands as moral authorities and control the attitudes of their families. Desire and will reproduce the orders of the patriarchs among family members; to reorder them would be to establish a struggle for emancipation among the oppressed, a movement that transformed Lavoura arcaica into a tragic novel, as we show in this article.Raduan Nassar é leitor de Almeida Faria, conforme revelação do autor português no prefácio da edição brasileira de A Paixão, pela CosacNaify, em 2014. A mesma tensão entre o sagrado e o profano que lemos em A Paixão, de Almeida Faria, também localizamos em Lavoura arcaica, de Raduan Nassar. As relações familiares, nas duas narrativas, exalam paixões, vontades. O ordenamento religioso no interior da constituição das duas famílias educadas com o arcaico corresponde, nas duas obras, à obediência que elas dedicam aos seus dois patriarcas; quer ao puro patriarca de Lavoura arcaica, quer ao devasso de A Paixão. O paradigma do patriarcado mantém o controle dos poderes primários nas duas famílias. Os pais postam-se como autoridades morais e controlam as atitudes das suas famílias. O desejo, a vontade, entre familiares reproduzem as ordens dos patriarcas; reordená-los seria estabelecer uma luta por emancipação entre oprimidos, movimento que transformou Lavoura arcaica numa novela trágica, como mostramos neste artig
Authors’ reponse: nargile smoking and its effect on in vitro fertilization: a critical eye on the available literature
No full text[No abstract available]ABDULMAJID S, 1995, J RADIOAN NUCL CH AR, V194, P371, DOI 10.1007-BF02038436; Galal A., 1973, EGYPT J CHEST DIS TU, V16, P5; Hannoun A, 2010, EUR J OBSTET GYN R B, V150, P171, DOI 10.1016-j.ejogrb.2010.02.036; INHORN MC, 1994, SOC SCI MED, V39, P671, DOI 10.1016-0277-9536(94)90023-X; Nassar AH, 2008, BJOG-INT J OBSTET GY, V115, P801, DOI 10.1111-j.1471-0528.2008.01685.x; Tamim H, 2008, BJOG-INT J OBSTET GY, V115, P91, DOI 10.1111-j.1471-0528.2007.01568.x; ZAHRAN F, 1982, AM J PUBLIC HEALTH, V72, P722, DOI 10.2105-AJPH.72.7.722; ZAHRAN FM, 1985, BRIT MED J, V291, P176811
MDOCS Poster-2018-02-06, Issam Nassar
No full textFebruary 6, 6pm
Location: Payne Room
Free and open to the public.
In conjunction with the exhibition This Place
Part of the Palestinian Voices series, organized and co-sponsored by the John B. Moore Documentary Studies Collaborative (MDOCS), the Environmental Studies and Sciences Program, International Affairs, Media and Film Studies, Art History, History, Hayat, and the Skidmore College Dean’s Office
Join us for a lecture by Issam Nassar on the history of Palestinian photography. Nassar is a historian of the Modern Middle East and of Photography at Illinois State University. His work focuses on the modern Middle East and the history of photography. He is the co-editor of Jerusalem Quarterly and the author and editor of a number of books, including the editor of I Would Have Smiled: Photographing the Palestinian Refugee Experience (Institute for Palestinian Studies, 2009) with Rashā Salṭī, and The Story of Jerusalem (Olive Branch Press, 2013).
Murat Yildiz, Assistant Professor of History at Skidmore College, will introduce Nassar and moderate a discussion following the talk.
This talk is part of exhibition This Place, on view February 3 through April 22, 2018, as well the Palestinian Voices series. The Palestinian Voices series is organized and co-sponsored by the John B. Moore Documentary Studies Collaborative (MDOCS), the Environmental Studies and Sciences Program, International Affairs, Media and Film Studies, Art History, History, Hayat, and the Skidmore College Dean’s Office.
This event is free and open to the public
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