– We consider a toy model for glassy dynamics of colloidal suspensions: a single Brownian particle diffusing among immobile obstacles. If Gaussian factorization of static density fluctuations is assumed, this model can be solved without factorization approximation for any dynamic correlation function. The solution differs from that obtained from the ideal mode coupling theory (MCT). The latter ...

Molecular and materials self-assembly are important fundamental principles and strategies for nanofabrication and nanotechnology in general. Hierarchical organization of molecules, polymers, and particles can be induced by various interactions, such as hydrogen bonding and ionic interactions. Furthermore, capillary, electric, magnetic, and entropic forces can influence the assembly of solid-sta...

known as “oobleck” after the complex fluid in one of Dr. Seuss’s classic children’s books arises from their transition from fluid-like to solid-like behavior when stressed. The viscous liquid that emerges from a roughly 2-to-1 (by volume) combination of starch to water can be poured into one’s hand. When squeezed, the liquid morphs into a doughy paste that can be formed into shapes, only to “me...

In this thesis, starting from a schematic mode-coupling model, the dynamics and the ow behavior of colloidal dispersions under stationary shearing close to the glass transition is analyzed. Both analytical and numerical methods are applied. The most important control parameters of the model are the shear rate and the separation parameter measuring the distance from the glass transition point. A...

Les auteurs rapportent chez deux nourrissons, l'etude anatomo-clinique d'un cas de kystes alveolaires multiples,et d'un cas d'emphyseme lobaire congenital bilateral.Le troisieme cas concerne un kyste bronchog6nique du poumon gauche,decouvert a l'autopsie d'un nouveau-ne. Dans le quatrieme cas,un emphyseme geant du lobe superieur gauche,decouvert dans un contexte infectieux,a l'age de neuf mois,...

conclusions presence of cae in patients with cas increases its cardiovascular event rate. isolated cae is not a benign finding and mi can occur. risk factors of cae are similar to cas, but c/s is more associated with cae than cas. dm is seen in cae patients less than cas. results hypertension (htn), dyslipidemia (dlp), and male sex were matched in both groups without significant difference. cig...

Among all of the plasmonic noble metal nanoparticles the gold nanorod (GNR) retains a special place. Its elongated shape gives it unique anisotropic optical and physico-chemical properties. Owing to possibility to control the end-cap geometry, the GNR is the most tunable shape in the terms of localized surface plasmon resonance (LSPR) spectral range. Moreover, the possibility to synthesize GNRs...

background: carotid artery stenting (cas) has recently been recommended as an alternative to carotid endarterectomy (cea) by some clinicians. objective: this study was designed to evaluate the success rate and in-hospital and 30-day adverse events in our first experiences in iran for cas with protection devices, to document our results and guide further use of cas. methods: from december 2003 t...

PNEUllOTHORAX DE L'ENFANT  Presentation de 17 cas. Revue de la litterature Par: Marandian M.H., Momenzadhe A., Wali­zade G., Kabiri M., A'skari H. et Movasat M.  Durant deux ans et demi, 17 cas de pneumo­thorax ont ete observes dans le service de Pedia­trie de !'Hospital Pahlavi de l'Univm-site de Teheran:  1)9 de ces malades etaient ages de moins d'un an. Le malade le plus age atteint de pn...