نتایج جستجو برای: brittle polymer

تعداد نتایج: 100985  

Journal: :The Philippine statistician (Quezon City) 2021

Seismic pressures on a reinforced concrete moment-resisting structure are known to create critical and essential regions at the beam-column joints. Beam-column junctions microcosm of whole structure, therefore brittle behavior these points predicts action. Ductile joints ductile Under influence seismic forces, between RC beams columns exposed high shear stresses. Learn more about performance fi...

2005
Maciej S. Kumosa

In this work, additional input is provided into the ongoing discussion on the mechanisms, causes and remedies of brittle fracture failures of composite (non-ceramic) insulators. This has been done partially to complement the recently published article on this topic entitled “ IEEE Task Force Report: Brittle Fracture in Non-Ceramic Insulators” [1]. At first, the most important characteristics of...

Elaheh Amini, Javad Baharara, Marzieh Mousavi,

Background: Anti-angiogenic therapy is a crucial step in cancer treatment. The discovery of new anti-angiogenic compounds from marine organisms has become an attractive concept in anti-cancer therapy. Because little data correlated to the pro- and anti-angiogenic efficacies of Ophiuroidea, which include brittle star, the current study was designed to explore the anti-angiogenic potential of bri...

Journal: :Journal of the American Academy of Dermatology 2007
Dana Kazlow Stern Stephanie Diamantis Elizabeth Smith Huachen Wei Marsha Gordon Wangui Muigai Erin Moshier Mark Lebwohl Phyllis Spuls

BACKGROUND Previous authors have claimed that dehydration of the nail plate causes brittle nails. Some experts claim that normal nails contain 18% water, and brittle nails contain less than 16%. OBJECTIVE We sought to test the hypothesis that brittle nails contain 2% less water than normal nails. We also examined the relationship between a number of health and behavioral variables and brittle...

2018
Gaobo Xiao Mingjun Ren

This paper presents an investigation of the mechanism of the brittle–ductile cutting mode transition from the perspective of the mechanics. A mechanistic model is proposed to analyze the relationship between undeformed chip thickness, deformation, and stress levels in the elastic stage of the periodic chip formation process, regarding whether brittle or ductile mode deformation is to follow the...

2013
H. Dong H. Huang G. Ye

Many types of healing agents have been investigated. These agents are processed in different ways, such as adhesive polymer in capsules or hollow fibre glasses, bacteria in porous aggregates and geo-materials directly incorporated in the cementbased materials. In this study, sodium silicate powder is encapsulated in polystyrene particles (polystyrene particle containing sodium silicate is defin...

2017
Sumit Sachdeva Sander J H Koper Anahid Sabetghadam Dimitri Soccol Dirk J Gravesteijn Freek Kapteijn Ernst J R Sudhölter Jorge Gascon Louis C P M de Smet

Affinity layers play a crucial role in chemical sensors for the selective and sensitive detection of analytes. Here, we report the use of composite affinity layers containing Metal Organic Frameworks (MOFs) in a polymeric matrix for sensing purposes. Nanoparticles of NH2-MIL-53(Al) were dispersed in a Matrimid polymer matrix with different weight ratios (0-100 wt %) and drop-casted on planar ca...

Journal: :British journal of hospital medicine 1977
R Tattersall

Journal: :Monaldi archives for chest disease = Archivio Monaldi per le malattie del torace 2004
E Graziani A Petroianni C Terzano

Brittle asthma is a rare form of severe asthma characterized by a wide variation of Peak Expiratory Flow (PEF), in spite of heavy doses of steroides. Brittle asthmatic patients had very serious and often, life threatening, attacks. Type 1 brittle asthma is characterized by a mantained PEF variability despite therapy, and it affected mostly female, aged between 15 and 55 years. Type 1 is associa...

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