Search results for "termit"

A heuristic approach for optimal operation of grid connected source-battery-load systems

2016

In the paper an optimal management procedure for a system composed of a renewable energy source, storage batteries and a load, permanently connected to a distribution network, is presented. The issue follows two objectives: a) maximum economic benefit for the system, and b) minimum energy exchange with the network. The operation cost of storage facilities, as well as the technical and economic constraints on power exchanges between the system and the network and the technical constraints about charging and discharging cycles of the batteries are considered. The effectiveness of the management procedure is numerically tested and the results are presented.

Decentralized on-site optimization of a battery storage system using one-way communication

2015

Intermittent renewable energy sources (e.g. wind, solar energy systems) have been providing an exponentially growing share of electricity generation. Due to their highly transient and stochastic nature, they pose substantial challenges for power grid operation. Power dispatched from these sources are uncontrolled and do not necessarily coincide with demand; this in turn affects power quality. Hence, extensive demand side management (DSM) is required. DSM relies on flexible loads as well as energy storage facilities. Furthermore, renewable power generation is by its very nature highly distributed and consists of large numbers of small units. These have a substantial effect on traditional pow…

Susceptibility of Seven Termite Species (Isoptera) to the Entomopathogenic Fungus Metarhizium anisopliae

2009

International audience; Seven termite species (Isoptera) from five families were tested for disease susceptibility against the entomopathogenic fungus Metarhizium anisopliae using a standard protocol: Mastotermes darwiniensis (Mastotermitidae), Hodotermopsis sjoestedti (termopsidae), Hodotermes mossambicus (Hodotermitidae), Kalotermes flavicollis (Kalotermitidae), Reticulitermes flavipes and Prorhinotermes canalifrons (Rhinotermitidae), and Nasutitermes voeltzkowi (termitidae). Our results showed a large diversity in disease susceptibility against M. anisopliae among the different species tested and we suggest that the evolution of disease resistance mechanisms in Isoptera may be influenced…

Multivariate analysis of sites using water invertebrates and land use as indicators of the quality of biotopes of Mediterranean relic plant (Petagnae…

2007

Petagnaea gussonei is a rhizomatous, perennial scapose hemicryptophyte species belonging to a monospecific genus of Apiaceae. It lives only along woodland rivulets and is a Tertiary relic localized in the restricted area of the Nebrodi Mountains (NE Sicily, Italy). Ecological indicators have been employed to understand the status of eight localities (intermittent rivulets) where the species occurs. In order to evaluate both the rivulets' water-quality and landscape use, index of anthropisation (Ia), water fleas bioassay (TU), and analyses of water macroinvertebrates have been employed. The results obtained for the level of toxicity exclude the presence of macropollutants (TU < 0.001), where…

Leukocyte–platelet aggregates—a phenotypic characterization of different stages of peripheral arterial disease

2016

The formation of monocyte-platelet aggregates and neutrophil-platelet aggregates (MPA and NPA, respectively) is influenced by inflammation, but also might contribute to an exacerbation of inflammatory responses in atherosclerotic plaque. The purpose of this study was to analyze MPA and NPA proportions in regard to different stages of peripheral arterial disease (PAD). Forty-five patients with intermittent claudication (IC) (3 groups: Rutherford (R)-1, R-2, and R-3; each n = 15), 20 patients with critical limb ischemia (CLI) (Rutherford 5 (40%) and 6 (60%)), and 20 healthy controls were studied. Analyses of monocyte (Mon) subpopulations (CD14++CD16- (classical) Mon1, CD14++CD16+ (intermediat…

APPROCCIO FARMACOLOGICO NEL PAZIENTE CON MALATTIA NON SUSCETTIBILE DI TERAPE LOCO-REGIONALI AD INTENTO CURATIVO.

2006

Carcinoma epidermoide cutáneo: relación con los trastornos respiratorios del sueño y definición de la variante alto riesgo

2015

Introducción: Recientes publicaciones han mostrado que la hipoxia intermitente similar a la que encontramos en el síndrome de apnea e hipopnea del sueño (SAHS) parece estar implicada en el desarrollo, progresión y crecimiento de tumores en modelos animales, a través de la sobreproducción de factores de crecimiento (entre ellos el factor de crecimiento vascular endotelial o VEGF) y la interacción con la vía supresora del gen p53. EL carcinoma epidermoide cutáneo (CEC) es un tumor procedente de los queratinocitos del estrato espinoso de la epidermis, muy prevalente en la población general y cuya incidencia está en aumento. Su lesión precursora más frecuente es la queratosis actínica. Existe u…

The fine structural organization of sternal glands of pseudergates and workers in termites (Isoptera): a comparative survey

2008

1873-5495 (Electronic) Comparative Study Journal Article; Thirty-nine species belonging to different families of termites are studied to give a comprehensive view of the evolution of the sternal glands. Several modifications occurring at cuticular and cytological levels are described in neuter castes. The outer epicuticle is always pierced by epicuticular pores. In advanced termites the epicuticular filaments greatly increase in number and length creating a thick layer. The pore canals gradually enlarge while the cuticle changes into a lattice structure lining an extracellular space in which the secretion is stored. Two classes of cells are present in basal termites (Mastotermitidae, Hodote…

Fluorescence Decay Time of Single Semiconductor Nanocrystals

2002

We present fluorescence decay measurements of single ZnS covered CdSe nanocrystals. It is shown that the fluorescence decay time is fluctuating during the investigation leading to a multiexponential decay even for a single nanocrystal. In combination with measurements of the fluorescence blinking behavior we find that a high fluorescence intensity is correlated with a long fluorescence decay time. This is consistent with a model of fluctuating nonradiative decay channels leading to variable dynamic quenching processes of the excited state.

Consensus Document on Intermittent Claudication from the Central European Vascular Forum (C.E.V.F.)-3rd revision (2013) with the sharing of the Medit…

2014

This paper is the review of the Consensus Document on Intermittent Claudication of the Central European Vascular Forum (CEVF), published in 2008, and and shared with the North Africa and Middle East Chapter of International Union of Angiology and the Mediterranean League of Angiology and Vascular Surgery. The Document presents suggestions for general practitioners and vascular specialists for more precise and appropriate management of PAD, particularly of intermittent claudication, and underlines the investigations that should be required by GPs and what the GP should expect from the vascular specialist (angiologist, vascular surgeon). The idea of the Faculty is to produce a short document,…