Fuzzy Environmental Model for Evaluating Water Quality of Sangam Zone during Maha Kumbh 2013

It is a well-known fact that water is the basic need of human beings. The industrial wastes nearby rivers and several anthropogenic activities are responsible for deteriorating water quality of rivers in India. The present research paper deals with the design and development of soft computing system to assess the water quality of rivers Ganga and Yamuna during the Maha Kumbh 2013 in and around Sangam Zone, Allahabad, by making use of physicochemical parameters relationship

Caesarean section scar pregnancy: case report, literature review and illustrative images

A case report of exogenic caesarean section scar pregnancy which ruptured into the utero-vesical pouch causing hemoperitoneum is presented with very illustrative images. Literature regarding importance of early diagnosis of caesarean scar pregnancy is reviewed

Filamins Regulate Cell Spreading and Initiation of Cell Migration

Mammalian filamins (FLNs) are a family of three large actin-binding proteins. FLNa, the founding member of the family, was implicated in migration by cell biological analyses and the identification of FLNA mutations in the neuronal migration disorder periventricular heterotopia. However, recent knockout studies have questioned the relevance of FLNa to cell migration. Here we have used shRNA-mediated knockdown of FLNa, FLNb or FLNa and FLNb, or, alternatively, acute proteasomal degradation of all three FLNs, to generate FLN-deficient cells and assess their ability to migrate. We report that loss of FLNa or FLNb has little effect on migration but that knockdown of FLNa and FLNb, or proteolysis of all three FLNs, impairs migration. The observed defect is primarily a deficiency in initiation of motility rather than a problem with maintenance of locomotion speed. FLN-deficient cells are also impaired in spreading. Re-expression of full length FLNa, but not re-expression of a mutated FLNa lacking immunoglobulin domains 19 to 21, reverts both the spreading and the inhibition of initiation of migration

Leak-before-break: Global perspectives and procedures

Structural integrity of components containing fluids is critical for economic, environmental and safety issues. Any risk of catastrophic failure, in the form of either brittle or ductile manner, is not acceptable across the industries. Consequently, many efforts have been invested in the structural integrity aspect to improve the assessment methodologies. One of the ways to aid the decision whether or not to live with the defect is through the demonstration of Leak-Before-Break (LBB). LBB which is a well-established practice in the nuclear industry, albeit as a defence-in-depth argument or to justify the elimination of pipe whip restraints, also finds its applicability in other industries. A review of the available procedures, their associated limitations and the research carried out in the last thirty years is presented in this paper. Application of this concept within non-nuclear industries is also discussed

Identification des substracts d'ASB2alpha, la sous-unité de spécificité d'une E3 ubiquitine ligase impliquée dans la différenciation hématopoïétique

La dégradation des protéines dépendante de l'ubiquitine est une voie de protéolyse contrôlée cruciale chez les Eucaryotes dont la spécificité est apportée par les E3 ubiquitine ligases impliquées dans la reconnaissance des protéines à polyubiquitinyler et donc dégradées par le protéasome. Au cours de ma thèse, j'ai développé une nouvelle stratégie d'identification de substrats d'E3 ubiquitine ligases par protéomique quantitative sans marquage, appliquée à l'étude d'ASB2alpha. La protéine ASB2alpha est la sous-unité de spécificité d'une E3 ubiquitine ligase exprimée dans les cellules hématopoïétiques capable d'induire la polyubiquitylation et donc la dégradation des filamines A et B (FLNa et FLNb). Après avoir démontré la pertinence de cette approche, nous avons mis en évidence la dégradation du troisième membre de la famille filamine, la FLNc. Cette nouvelle stratégie applicable à toutes les E3 ubiquitine ligases ciblant ses substrats au protéasome présente l'avantage d'être applicable à différents contextes physiologiques et de s'affranchir des difficultés rencontrées lors de l'utilisation des méthodes d'identification dites classiques. Par ailleurs, nous avons montré qu'ASB2alpha en induisant la dégradation des filamines, était un régulateur de la motilité cellulaire. De plus, nous avons établi les bases moléculaires de la reconnaissance de la FLNa par ASB2alpha. L'identification de leurs substrats et la caractérisation des mécanismes de leur reconnaissance apparaissent comme essentiels pour la compréhension de nombreux processus cellulaires et pathologiques.The ubiquitin-proteasome system is a central mechanism for controlled proteolysis that regulates numerous cellular processes in eukaryotes. E3 ubiquitin ligases are responsible for the specificity of this system. They provide platforms for binding specific substrates thereby coordinating their ubiquitination and subsequent degradation by the proteasome. We have developed a global proteomic strategy to identified E3 ubiquitin ligase substrates targeted to proteasomal degradation. The proof of principle of this strategy is provided by our results highlighting FLNa and FLNb as substrates of the ASB2alpha E3 ubiquitin ligase that is involved in hematopoiesis. Furthermore, we have shown that FLNc, the third member of the filamin family, is also a target of ASB2alpha. This study provides a new strategy for the identification of E3 ubiquitin ligase substrates that have to be degraded in physiologically relevant settings. We have also demonstrated that ASB2alpha, through degradation of FLNs, can regulate integrin-dependent cell motility. Moreover, structural and cell biology studies have unraveled the domain of ASB2α that is involved in the recruitment of its substrate, FLNa. This study has provided an original strategy to identify E3 ubiquitin ligase substrates targeted to degradation. Furthermore, our work has contributed to the understanding of the function and mechanisms of action of ASB2α in hematopoietic cells

Identification des substracts d'ASB2alpha, la sous-unité de spécificité d'une E3 ubiquitine ligase impliquée dans la différenciation hématopoïétique

TOULOUSE3-BU Sciences (315552104) / SudocSudocFranceF

DYNAMIC ANALYSIS OF FRP LEAF SPRING--CRITICAL REVIEW

The review paper aims at focusing the prominent and pioneering work addressing the design and analysis of multi-leaf spring. Rigidity and load carrying capacity are the prime concern in selection of material for suspension component which indirectly emphasize upon the passenger comfort. Exploring and using composite as material for leaf spring, instead of conventional steel materials has gathered attention of researchers and automotive manufacturers due to potential characteristics of composites. But its feasibility and reliability needs to be dogged out and addressed to the greater extent. The paper attempts to brief out the attempts made hitherto