نتایج جستجو برای: fragile control

تعداد نتایج: 1341839  

Journal: :Head & neck 2000
U Egeli L Ozkan B Tunca S Kahraman G Ceçener E Ergül K Engin

BACKGROUND Numerous studies have recently been conducted to investigate genetic mechanisms in cancer causes and pathogenesis. Some of these studies have shown that there were certain specific chromosomal defects in normal cells of cancer patients and in their first-degree relatives. It was suggested that these individuals were susceptible to cancer development when compared with people without ...

Journal: :Kybernetika 2009
Lubomír Bakule Manuel de la Sen

The paper deals with the synthesis of a non-fragile state controller with reduced design complexity for a class of continuous-time nonlinear delayed symmetric composite systems. Additive controller gain perturbations are considered. Both subsystems and interconnections include time-delays. A low-order control design system is first constructed. Then, stabilizing controllers with norm bounded ga...

Journal: :Current opinion in genetics & development 2006
Kathryn Garber Karen T Smith Danny Reines Stephen T Warren

The fragile X mental retardation protein (FMRP) plays a role in the control of local protein synthesis in the dendrites. Loss of its production in fragile X syndrome is associated with transcriptional dysregulation of the gene. Recent work demonstrates that Sp1 and NRF1 transcriptionally control this gene. Other studies reveal how the microRNA pathway and signaling are related to FMRP function ...

2011
Yusuke Suzuki Yuzu Uchida Jun Yoneyama J. Yoneyama

The paper is concerned with robust H∞ non-fragile controller design for uncertain descriptor systems with time-delay. A descriptor system has potential to describe a wide class of physical systems. It can give a representation of the system with algebraic constraints. A unique characteristic of descriptor systems is possible impulse modes and nonregularity, which do not appear in state-space sy...

Journal: :Cancer research 2002
Bruce C Turner Michelle Ottey Drazen B Zimonjic Magdalena Potoczek Walter W Hauck Edward Pequignot Catherine L Keck-Waggoner Cinzia Sevignani C Marcelo Aldaz Peter A McCue Juan Palazzo Kay Huebner Nicholas C Popescu

In various studies of sporadic breast cancers, 40-70% were strongly positive for fragile histidine triad (Fhit) protein expression, whereas only 18% of BRCA2 mutant breast cancers demonstrated strong Fhit expression, suggesting that the BRCA2 repair function may be necessary to retain intact fragile common chromosome fragile site 3B(FRA3B)/FHITloci. In the current study, 22 breast tumors with d...

Journal: :American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics 2003
Naama Barnea-Goraly Stephan Eliez Maj Hedeus Vinod Menon Christopher D White Michael Moseley Allan L Reiss

Fragile X syndrome, the most common form of hereditary mental retardation, causes disruption in the development of dendrites and synapses, the targets for axonal growth in the central nervous system. This disruption could potentially affect the development, wiring, and targeting of axons. The current study utilized diffusion tensor imaging (DTI) to investigate whether white matter tract integri...

2004
John T. Wen Gustavo Montemayor

When multiple robots collaboratively transport or manipulate a load, both motion and force need to be considered. This is especially true when the load is fragile or needs to be moved rapidly. Tight force coordination is possible if all robots share their force information and the grasp geometry is completely known. When this is not the case, a common approach is to use the leader/follower stra...

Journal: :Journal of abnormal child psychology 2007
Cathy M Grant Ian Apperly Chris Oliver

Males with fragile X syndrome (FXS) have difficulties with social interaction and many show autistic features. This study examined whether the social deficits characteristic of FXS are associated with theory of mind difficulties. Two groups of boys with FXS participated: a group with few autistic features and a group with many autistic features. An intellectual disability control group also par...

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: :Research in developmental disabilities 2014
Bridgette L Tonnsen Marjorie L Grefer Deborah D Hatton Jane E Roberts

Attention problems are among the most impairing features associated with fragile X syndrome (FXS). However, few studies have examined behavioral development of inhibitory control in very young children with FXS. We examined attentional control in 3-6 year boys with FXS using both an experimental inhibitory control paradigm and parent-report of attention problems. Study 1 examined attentional co...

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