We explore Random Scale-Free networks of populations, modelled by chaotic Ricker maps, connected by transport that is triggered when population density in a patch is in excess of a critical threshold level. Our central result is that threshold-activated dispersal leads to stable fixed populations, for a wide range of threshold levels. Further, suppression of chaos is facilitated when the thresh...

Protein-protein interactions are inherently anisotropic to some degree, with orientation-dependent interactions between repulsive and attractive or complementary regions or "patches" on adjacent proteins. In some cases it has been suggested that such patch-patch interactions dominate the thermodynamics of dilute protein solutions, as captured by the osmotic second virial coefficient (B22), but ...

Abstract For tissue engineering applications, accurate prediction of the effective mechanical properties scaffolds is critical. Open and closed cell modelling, mean-field homogenization theory, finite element (FE) methods are theories techniques currently used in conventional to estimate equivalent tissue-engineering scaffolds. This study aimed at developing a formulation link microscopic struc...

the qom formation in southwest kashan in sanandaj-sirjan fore arc basin has a thickness of 190 meters and is composed of medium to thick and massive bedded limestone, marly limestone, sandy limestone, marl and coglomerates. study of these deposits led to recognition of nine microfacies related to a carbonate platform. the high presence of perforate foraminifera in most of the recognized microfa...

The author describes a recent work for cello and computer in which an open-form score is generated in real-time with a MaxMSP/Jitter patch. The generative technique is described in detail and compared to an earlier method of score generation employed by the author as well as considered in the context of traditional open-form scores.

Multiple distinct K+-selective channels may contribute to action potential repolarization and afterpotential generation in chick ciliary neurons. The channel types are difficult to distinguish by traditional voltage-clamp methods, primarily because of coactivation during depolarization. I have used the extracellular patch-clamp technique to resolve single-channel K+ currents in cultured chick c...

Layering a regenerative polymer scaffold on the surface of the heart, termed as a cardiac patch, has been proven to be effective in preserving cardiac function after myocardial infarction (MI). However, the placement of such a patch on the heart usually needs open-chest surgery, which is traumatic, therefore prevents the translation of this strategy into the clinic. We sought to device a way to...

BACKGROUND Open mesh used in anterior inguinal hernia repair can be configured as a flat patch (Lichtenstein operation) or as a cone-shaped preformed plug and supplementary patch (plug-and-patch operation; Perfix Plug; Davol Inc, Cranston, RI). METHODS One hundred forty-one patients were randomly allocated and blinded to receive either a Lichtenstein patch or a Perfix plug-and-patch. Informat...

AIM Determine whether patients with Alzheimer's disease demonstrating functional and cognitive decline, following 24-48 weeks of open-label treatment with 9.5 mg/24 h (10 cm(2)) rivastigmine patch, benefit from a dose increase in a double-blind (DB) comparative trial of two patch doses. METHODS Patients meeting prespecified decline criteria were randomized to receive 9.5 or 13.3 mg/24 h (15 c...

Based on the Hodgkin-Huxley (HH) model, the effects of patch temperature as a control parameter on the spontaneous action potentials for finite size of membrane patch are studied. With increasing patch temperature, it is found that the mean open rates of sodium and potassium channels of the HH neuron are decreased, and the mean duration of spikes of membrane potential is also decreased, which a...