13N-labeled ammonia was used to investigate 1) the cerebral extraction and clearance of ammonia, 2) the mechanism by which capillaries accommodate changes in cerebral blood flow (CBF) and 3) its use for the measurement of CBF. The unidirectional extraction of 13NH3 in rhesus monkeys was measured during PaCO2 induced changes in CBF and dog studies were performed using in vitro tissue counting te...

Robust hash functions for visual data need a feature extraction mechanism to rely on. We experimentally compare spatial and transform domain feature extraction techniques and identify the global DCT combined with the cryptographic hash function MD-5 to be suited for visual hashing. This scheme offers robustness against JPEG2000 and JPEG compression and qualitative sensitivity to intentional glo...

Aqueous waste streams of the metallurgical industry often contain considerable concentrations of metal salts. Previous research showed that the metal chloride salts of zinc(ii), manganese(ii) and iron(iii) can be recovered by solvent extraction using a sustainable and renewable fatty acid based ionic liquid as the extractant. In this paper, the extraction mechanism of Zn(ii), Co(ii) and Ni(ii) ...

In numerous reports on selective solid-phase extraction (SPE) of uranium, the extraction of uranium is generally accepted as a direct coordination of the ligands on the solid matrix with the uranyl, in which the critical effect of the hydration shell on the uranyl is neglected. The related mechanism in the extraction process remains unclear. Herein, the detailed calculation of activation energy...

In this article, we explore the geodesics motion of neutral test particles and process energy extraction from a regular rotating Hayward black hole. We analyse effect spin, as well deviation parameter $g$, on ergoregion, event horizon static limit said By making use geodesic equations equatorial plane, determine innermost stable circular photon orbits. Moreover, investigate effective potentials...

We show how event extraction can be used for handling delayed response tasks with arbitrary delay periods between the stimulus and the cue for response. Our approach is based on a number of information processing levels, where the lowest level works on raw time-stepped based sensory data. This data is classified using an unsupervised clustering mechanism. The second level works on this classifi...

this paper presents an efficient mechanism to convert sana’ani dialect to modern standard arabic. the mechanism is based on morphological rules related to sana’ani dialect as well as modern standard arabic. such rules facilitate the dialect conversion to its corresponding msa. the mechanism tokenizes the input dialect text and divides each token into stem and its affixes; such affixes can be ca...

oils and fats are substances that are important nutritionally and have important role and impact on human health. energy consumption and preservation in respect of food industry and the increase in the world population and search for new sources of oils and fats to full fill the need of the society particulary the nutritional requirements have introduced this research topic. therefore aim of th...