X iv :0 71 0. 13 61 v3 [ m at hph ] 1 6 O ct 2 00 7 Blow-up rate for a semi-linear accretive wave equation M. Jazar∗ and Ch. Messikh Abstract. In this paper we consider the semi-linear wave equation: utt − ∆u = ut|ut| in R where 1 ≤ p ≤ 1 + 4 N−1 if N ≥ 2. We give the optimal blow-up rate for blowing up solutions of this equation. AMS Subject Classifications: 35L05,35L67

The scaling limit of planar loop-erased random walks is described by a stochastic Loewner evolution with parameter κ = 2. In this note SLE2 in the upper half-plane H minus a simply-connected compact subset K ⊂ H is studied. As a main result, the left-passage probability with respect to K is explicitly determined. ar X iv :0 81 0. 45 03 v1 [ m at hph ] 2 4 O ct 2 00 8 A generalisation of Schramm...

Palm-based lipid nanoparticle formulation loaded with griseofulvin was prepared by solvent-free hot homogenization method. The griseofulvin loaded lipid nanoparticles were prepared via stages of optimisation, by altering the high pressure homogenisation (HPH) parameters, screening on palm-based lipids and Tween series surfactants and selection of lipid to surfactant ratios. A HPLC method has be...

BACKGROUND Pulmonary hypertension is a fatal disease characterized by vasoconstriction and vascular remodeling. Loss of endothelial nitric oxide bioavailability is implicated in pulmonary hypertension pathogenesis. Recent evidence suggests that the cofactor tetrahydrobiopterin (BH4) is an important regulator of nitric oxide synthase enzymatic function. METHODS AND RESULTS In the hph-1 mouse w...

Tetrahydrobiopterin (BH(4)) is an essential cofactor for nitric oxide synthases (NOS). This study investigated the effect of increasing BH(4) levels on hypoxia-induced pulmonary vasoconstriction (HPV). Sprague Dawley rats and hph-1 (BH(4) deficient) mice were given BH(4) before and during HPV in an isolated perfused lung preparation. BH(4) inhibited HPV in a concentration-dependent manner and i...

Transcription of the Neurospora crassa gene con-10 is induced during conidiation and following exposure of vegetative mycelia to light, but light activation is transient due to photoadaptation. We describe mutational analyses of photoadaptation using a N. crassa strain bearing a translational fusion of con-10, including its regulatory region, to a selectable bacterial gene conferring hygromycin...

The Drosophila melanogaster cyclin-dependent protein kinase complex CycD/Cdk4 stimulates both cell cycle progression and cell growth (accumulation of mass). CycD/Cdk4 promotes cell cycle progression via the well-characterized RBF/E2F pathway, but our understanding of how growth is stimulated is still limited. To identify growth regulatory targets of CycD/Cdk4, we performed a loss-of-function sc...