In this paper, we propose distributed algorithms for the detection and tracking of phenomena clouds such as gas leaks and oil spills, using service oriented sensor networks (SOSNs). A SOSN represents each of its sensors as a service in a service-oriented architecture (SOA), that allows their dynamic discovery and composition into applications. SOSNs emerged due to a need for sensor networks whi...

OG 1-21 Elements with even atomic number (Z) in the interval 50 ~ Z ~ 58 have beell resolved in the cosmic radiation using the Heavy Nuclei Experiment on the HEA0-3 satirllite. The observation that 50Sn and 56Ba are more abundant that 52 Tc and 54Xe indicates a substantial s-process contribution to the cosmic PV source. A significant abundance of 58Ce provides further support for this finding.

Horticulture is a discipline mainly concerned with the cultivation of plant material for food supply, medicinal use, or functional and aesthetic purposes by humans, they are genetically diverse group play an important role in economy modern society, as well at center healthy diet urban population. In this respect, Rosa L. plants traditional pharmacological practices landscape studies. context, ...

In this study, water-distilled essential oils from the flowers of Tanacetum zahlbruckneri and flowers and stems of Tanacetum tabrisianum from Turkey were analysed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The flower oil of T. zahlbruckneri was characterised by the sesquiterpenes germacrene D (29.7%) and spathulenol (12%). Flower (A) and stem (B) oil of T. tabr...

background & aim: the present study was aimed to evaluate and compare the antibacterial activity of schrophularia striata boiss. andstachys schtschegleevii sosn. extracts against seven clinical isolates. the test isolates were streptococcus agalactiae, enterococcus faecalis, staphylococcus saprophyticus, e. coli, klebsiella pneumoniae, proteus mirabilis and enterobacter dissolvens. e. coli (atc...

In a microcosm experiment, I tested how species composition, species richness, and community age affect the susceptibility of grassland communities to invasion by a noxious weed (Centaurea solstitialis L.). I also examined how these factors influenced Centaurea’s impact on the rest of the plant community. When grown in monoculture, eight species found in California’s grasslands differed widely ...

the mineral contents of centaura leave and seeds were determined by inductively coupled plasma-atomic emission spectroscopy (icp-aes). macro element concentrations (p, k, ca, mg and s) of samples were found at high levels. k was established at high level in both leave and seed samples of centaurea. while k contents of leaves changes between 7254.10 mg/kg (centaurea lycaonica) and 26396.36 mg/kg...

Over the past 3 centuries, many species have been dispersed beyond their natural geographic limits by humans, but to our knowledge, reproductive isolation has not been demonstrated for such neo-allopatric species. We grew seeds from three species of Centaurea (Centaurea solstitialis, Centaurea calcitrapa, and Centaurea sulphurea) that are native to Spain and have been introduced into California...

This paper focused on the assessment of antioxidant property and fatty acid composition of four Centaurea species. The antioxidant activity of its methanol extract was evaluated by several in vitro experiments including phosphomolybedum assay, DPPH assay, β-carotene/linoleic acid, ferric and cupric reducing power. Total phenolic and flavonoid contents were also evaluated. The methanol extract o...

This article investigates the exomorphic characteristics of the achenes which are achene size, color, and surface pattern, and pappus length, and colour. All these characteristics in seven taxa of Asteraceae namely, C. aggregata Fisch. & C.A. Mey. ex DC. subsp. aggregata, C. sivasica Wagenitz, C. polypodiifolia Boiss. var. polypodiifolia, C. polypodiifolia Boiss. var. szowitziana (Boiss.) Wagen...