Search results for "CONI"

Charging a Capacitor from an External Fluctuating Potential using a Single Conical Nanopore

2015

We explore the electrical rectification of large amplitude fluctuating signals by an asymmetric nanostructure operating in aqueous solution. We show experimentally and theoretically that a load capacitor can be charged to voltages close to 1 V within a few minutes by converting zero time-average potentials of amplitudes in the range 0.5–3 V into average net currents using a single conical nanopore. This process suggests that significant energy conversion and storage from an electrically fluctuating environment is feasible with a nanoscale pore immersed in a liquid electrolyte solution, a system characteristic of bioelectronics interfaces, electrochemical cells, and nanoporous membranes.

Possible functions of biomineralization of some Textulariid (Foraminifera) species of the Nw Iberian Margin

2016

The main goal of this work is to analyze the elemental composition of the test’s wall of some species/specimens of Textulariids (sub-class Subclass Textulariia), collected in surface sediments of the NW Iberian Margin. The elemental analyses was based on the Energy Dispersive Spectroscopy (EDS) on the Scanning Electron Microscope (SEM; Hitachi, S4100) of Textularia deltoidea, Textularia agglutinans, Sahulia conica, Karrerotextularia flintii, Siphotextularia heterostoma, Karreriella bradyi, Spiroplectammina sagittula and Arenoparrella mexicana . The elelemetal cocnentrations of the species wall were compared with the mineralogical composition (X-Ray diffraction) of the sediments of the stati…

Reperti su Imenotteri parassitoidi di fillominatori infestanti specie botaniche spontanee ed ornamentali. II Nota

2003

Barcoding of parasitoid wasps (Braconidae and Chalcidoidea) associated with wild and cultivated olives in the Western Cape of South Africa 1

2019

Wild and cultivated olives harbor and share a diversity of insects, some of which are considered agricultural pests, such as the olive fruit fly. The assemblage of olive-associated parasitoids and seed wasps is rich and specialized in sub-Saharan Africa, with native species possibly coevolving with their hosts. Although historical entomological surveys reported on the diversity of olive wasp species in the Western Cape Province of South Africa, no comprehensive study has been performed in the region in the molecular era. In this study, a dual approach combining morphological and DNA-based methods was used for the identification of adult specimens reared from olive fruits. Four species of Br…

Fasti seicenteschi nella scrittura di Gesualdo Bufalino

2009

Il saggio esamina le peculiarità del barocco dissonante di Gesualdo Bufalino. In Bufalino l’artificio dello stile sottende una tensione ideologica. L’intensità espressiva e l’eccesso verbale cercano di compensare un vuoto e costituiscono, nel sentire dello scrittore, un formidabile mezzo «per contrastare l’ossificazione del mondo». Bufalino rivendica quindi il valore strutturale della propria scelta barocca, dichiarando che la sua scrittura è sorretta da un «barocco borrominiano» in cui «l’ornato è funzione», in mancanza del quale «l’architettura cadrebbe».

RIFORMA DELLA GIUSTIZIA SPORTIVA E FEDERAZIONI SPORTIVE NAZIONALI

2014

Sport; CONI; Federazioni sportive nazionali

The GenusCaenophanesFoerster, 1862 (Hymenoptera: Braconidae: Doryctinae) in the Western Palaearctic

2011

The Western Palaearctic species of the genus Caenophanes Foerster are reviewed. A new species from the Canary Islands, C. lapalmaensis sp. nov., is described. The name C. rugosifrons (Picard) is restored from synonymy (stat. resurr.). The redescriptions of C. incompletus (Ratzeburg) and C. rugosifrons are given. A key to the Western Palaearctic species of Caenophanes is suggested.

Unusual internal structure of cm-sized coldwater calcite: Weichselian spars in former pools of the Zinnbergschacht Cave (Franconian Alb/SE Germany)

2018

The investigation of the internal structure of calcite crystals is a new focus in speleothem science, especially in the range of crystallization temperatures close to 0°C. Recently found calcite spars from Zinnbergschacht Cave of the Franconian Alb (SE Germany) are ideal for multi-method investigation. The elongated calcites (up to 6 cm in length) with three to six lateral faces and basal triangular faces at the ends are observed in collapse-zones in the cave. 230Th/U-ages of 38.9 ka suggest formation during the periglacial Weichselian, between the Scandinavian and Alpine Glaciations. The δ18O and δ13C values of the calcite spars vary from -11.18 to -16.11‰ V-PDB and from -4.78 to -6.13‰ V-…

Zirconium and hafnium fractionation and distribution of Rare Earth Elements in neutral–alkaline waters: Case study of Lake Van hydrothermal system, T…

2021

International audience; We investigated the distribution of Zr, Hf, and rare earth elements (REE) as the sum of lanthanides plus Y in the hydrothermal system in the Lake Van area of south-eastern Turkey. This system is characterised by water with variable pH in alkaline conditions resulting from hydrothermal CO2 upraise and neoformation of calcite minerals in near equilibrium with the interacting waters. Zr, Hf, and REE determinations were carried out for aqueous phases and suspended solids in lake water and surrounding thermal springs. We found that dissolved Hf is partitioned relative to Zr during calcite formation and that such fractionation is a function of the Ca2+ activity in warm wat…

Sequence and evolution of a hexamerin from the ant Camponotus festinatus.

2000

In the ant Camponotus festinatus, two different hexamerins accumulate stage-specifically during the late larval period and at various times in adults. These hexamerins serve as storage proteins and play important roles in brood nourishment and colony founding. We report an analysis of the cDNA sequence of C. festinatus hexamerin 2 (CfeHex2). The native protein contains 732 amino acids, which are moderately enriched in aromatic amino acids, aspartate and asparagine. Phylogenetic analyses show a close relationship of CfeHex2 to a putative toxin of the braconid wasp, Bracon hebetor. The divergence of Formicidae and Braconidae hexamerins was calculated to have begun 187 MYA, an estimate consist…