نتایج جستجو برای: where fragile materials

تعداد نتایج: 1214487  

عاملی, حسین, درویشی, کتایون , کریمی نژاد, رکسانا ,

 ABSTRACT The fragile X syndrome is the most frequent cause of inherited mental retardation. The fragile site is on the long arm of X chromosome in X q27.3 region. Incidence of syndrome is 1 in 2000 in males and 1 in 2500 in females. This fragile site is visible only with using of special cultural technices. Since females have two X chromosomes, this signs apear less than males. The females who...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2005
Stephen R Hostler Christopher E Brennen

The transmission of pressure waves in granular materials is complicated by the heterogeneity and nonlinearity inherent in these systems. Such waves are propagated through particle contacts primarily along the "force chains" which carry most of the load in granular materials. These fragile and ephemeral chains coupled with irregular particle packing lead to the observed heterogeneity. Nonlineari...

Journal: :Signal Processing 2003
Frédéric Deguillaume Sviatoslav Voloshynovskiy Thierry Pun

Digital watermarking appears today as an e.cient mean of securing multimedia documents. Several application scenarios in the security of digital watermarking have been pointed out, each of them with di/erent requirements. The three main identi1ed scenarios are: copyright protection, i.e. protecting ownership and usage rights; tamper proo1ng, aiming at detecting malicious modi1cations; and authe...

2013
Chan-Il Woo Seung-Dae Lee

Fragile watermarking has the characteristics where the inserted watermark should be easily breakable for a trivial tampering of the image. So, fragile watermarking technique is proposed for the purpose of authentication or tamper detection. In this paper, we propose an efficient image tamper detection method using block-wise technique which is able to detect the tamper locations. In the propose...

Journal: :Arquivos de neuro-psiquiatria 2005
Carlos Eduardo Steiner Marilisa Mantovani Guerreiro Antonia Paula Marques-de-Faria Iscia Lopes-Cendes

Fragile X syndrome is a frequent genetic disease associated to developmental disorders, including learning disability, mental retardation, behavioral problems and pervasive developmental disorders (autism and related conditions). We studied a sample of 82 individuals (69 males and 13 females) presenting with pervasive developmental disorders using three techniques for the diagnosis of fragile X...

Journal: :Neuron 2003
L. N Antar G. J Bassell

Recent studies provide new insight into the mechanistic function of Fragile X Mental Retardation Protein (FMRP), paving the way to understanding the biological basis of Fragile X Syndrome. While it has been known for several years that there are spine defects associated with the absence of the mRNA binding protein FMRP, it has been unclear how its absence may lead to specific synaptic defects t...

Journal: :Human molecular genetics 2013
Laura K K Pacey Ingrid C Y Xuan Sihui Guan Dafna Sussman R Mark Henkelman Yan Chen Christian Thomsen David R Hampson

Fragile X Syndrome is the most common inherited cause of autism. Fragile X mental retardation protein (FMRP), which is absent in fragile X, is an mRNA binding protein that regulates the translation of hundreds of different mRNA transcripts. In the adult brain, FMRP is expressed primarily in the neurons; however, it is also expressed in developing glial cells, where its function is not well unde...

2009
Woo Chaw Seng Jiang Du Binh Pham

Robust watermarks are suitable for copyright protection in a DRM scenario. On the other hand, fragile watermarks are good for tamper detection applications. Semi fragile watermarks possess some properties of both robust and fragile watermarks at a moderate level. The need for semi fragile watermarks arises from the requirements of content authentication where the watermark must highlight malici...

Journal: :The Journal of chemical physics 2007
L Berthier G Biroli J-P Bouchaud W Kob K Miyazaki D R Reichman

We study in detail the predictions of various theoretical approaches, in particular, mode-coupling theory (MCT) and kinetically constrained models (KCMs), concerning the time, temperature, and wave vector dependence of multipoint correlation functions that quantify the strength of both induced and spontaneous dynamical fluctuations. We also discuss the precise predictions of MCT concerning the ...

Journal: :Cell 2014
Roman Alpatov Bluma J. Lesch Mika Nakamoto-Kinoshita Andres Blanco Shuzhen Chen Alexandra Stützer Karim J. Armache Matthew D. Simon Chao Xu Muzaffar Ali Jernej Murn Sladjana Prisic Tatiana G. Kutateladze Christopher R. Vakoc Jinrong Min Robert E. Kingston Wolfgang Fischle Stephen T. Warren David C. Page Yang Shi

Fragile X syndrome, a common form of inherited intellectual disability, is caused by loss of the fragile X mental retardation protein FMRP. FMRP is present predominantly in the cytoplasm, where it regulates translation of proteins that are important for synaptic function. We identify FMRP as a chromatin-binding protein that functions in the DNA damage response (DDR). Specifically, we show that ...

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