To be most energetically profitable, predators should ingest prey with the maximal nutritional benefit while minimizing the cost of processing. Therefore, when determining the quality of prey items, both the cost of processing and nutritional content must be considered. Specific dynamic action (SDA), the increase in metabolic rate associated with feeding in animals, is a significant processing ...

A novel synthetic route is designed, employing both high temperature and a nontoxic organic structure-directing agent (SDA), for the synthesis of high silica zeolite Y. The N-methylpyridinium used as an organic SDA is stable during the synthesis, and the high silica zeolite Y shows high hydrothermal stability and good catalytic performance, as well as excellent adsorptive properties.

The templated zeolite-analogue GaPO-34 (CHA structure type) crystallises from a gel precursor Ga2O3 : 2H3PO4 : 1HF : 1.7SDA : 70H2O (where SDA = structure directing agent), treated hydrothermally for 24 hours at 170 °C using either pyridine or 1-methylimizadole as SDA and one of either poorly crystalline ε-Ga2O3 or γ-Ga2O3 as gallium precursor. If the same gels are stirred for periods shorter t...

ÐAn important trend of current GIS development is to provide easy and effective access to spatial analysis functionalities for supporting decision making based on geo-referenced data. Within the framework of the ongoing SQL standards for spatial extensions, a spatial query language, called SQL/SDA, has been designed to meet such a requirement. Since the language needs to incorporate the importa...

The heart of hibernating species is resistant to lethal ventricular fibrillation (VF) induced by hypothermia. Spatially discordant (SDA) cardiac alternans is a promising predictor of VF, yet its role in the mechanism of hypothermic arrhythmogenesis in both nonhibernating and hibernating mammals remains unclear. We optically mapped the posterior epicardial surface of Langendorff-perfused hearts ...

BACKGROUND Spatially discordant alternans (SDA) has been linked to life-threatening arrhythmias. The mechanisms underlying SDA development in cardiac tissue remain unclear. METHODS AND RESULTS We investigated the role of conduction velocity (CV) restitution and short-term memory in the organization and evolution of alternans in action potential duration using high-resolution optical mapping o...

AIM To review the role of multidisciplinary management in treating sporadic duodenal adenomas (SDA). METHODS SDA managed at North Shore Hospital between 2009-2014 were entered into a prospective database. Pathology, endoscopic and surgical management as well as follow up were reviewed. RESULTS Twenty-eight patients (14 male: Median age 68 years) presented with SDA [18 were classified as non...

Concrete durability, especially in water-logged environments might not be possible with conventional constituents of concrete. A combination mineral and chemical admixtures different proportions is used to study water absorption, sorptivity, permeability behavior The test were carried out using nine (9) trial mixes Calcined Clay (CC), Sawdust Ash (SDA), Crystalline Based Admixture (CBA), Superp...

Domain-specific languages improve the productivity of application engineers by raising the level at which they define domain instances. However, more support for designing and implementing these languages in practice is needed. The Software Design Automation (SDA) method is a specific approach for doing domain-specific language design and implementation based on a principled, semantics-based ap...

Solar photovoltaic power generation has become the focus of world energy market. However, weak continuity and variability solar data severely increase grid operating pressure. Therefore, it is necessary to propose a new refined targeted forecasting method broaden channels. In this paper, hybrid model (KM-SDA-ABWO-RBF) based on radial basis function neural networks (RBFNNs), adaptive black widow...