Search results for "nez"
showing 10 items of 303 documents
Synthesis and preliminary antibacterial evaluation of Linezolid-like 1,2,4-oxadiazole derivatives
2012
In the present study the synthesis of new Linezolid-like molecules has been achieved by substitution of the oxazolidinone central heterocyclic moiety with a 1,2,4-oxadiazole ring. Two series of 1,2,4-oxadiazoles, bearing different side-chains and containing a varying number of fluorine atoms, were synthesized and preliminarily tested for biological activity against some Gram-positive and Gram-negative bacteria using Linezolid and Ceftriaxone as reference drugs
Evidence of stochastic resonance in the mating behavior of Nezara viridula (L.)
2008
We investigate the role of the noise in the mating behavior between individuals of Nezara viridula (L.), by analyzing the temporal and spectral features of the non-pulsed type female calling song emitted by single individuals. We have measured the threshold level for the signal detection, by performing experiments with the calling signal at different intensities and analyzing the insect response by directionality tests performed on a group of male individuals. By using a sub-threshold signal and an acoustic Gaussian noise source, we have investigated the insect response for different levels of noise, finding behavioral activation for suitable noise intensities. In particular, the percentage…
Characterization of Streptomyces venezuelae ATCC 10595 rRNA gene clusters and cloning of rrnA
1996
Streptomyces venezuelae ATCC 10595 harbors seven rRNA gene clusters which can be distinguished by BglII digestion. The three rRNA genes present in each set are closely linked with the general structure 16S-23S-5S. We cloned rrnA and sequenced the 16S-23S spacer region and the region downstream of the 5S rRNA gene. No tRNA gene was found in these regions.
Populism on the loose
2018
Populismitutkimus on pääosin keskittynyt etsimään populismia määrittäviä yhteisiä piirteitä tai hahmottamaan populismia sosiaalisena logiikkana. Tässä kirjassa tarkastellaan populismin sisäisiä eroja. Populismi vaihtelee ensinnäkin kulttuurikontekstin mukana. Populistiset liikkeet ovat jopa yhteiskunnallisesti samankaltaisissa maissa, kuten Pohjoismaissa, yleensä varsin erilaisia. Toiseksi populismiin vaikuttavat merkittävästi sellaiset muuttujat kuin sukupuoli, luokka ja uskonto. Ja kolmanneksi populismin käsite sinänsä ”irti” tavalla, johon sopii Ernesto Laclaun populismiteoriasta tuttu termi ”kelluva merkitsijä”. Tämän kirjan otsikko, ”Populism on the loose”, viittaa yhtä aikaa kahteen e…
Le cimetière du second âge du Fer du « Bas des Aouches » à Gisy-les-Nobles (Yonne) : découvertes anciennes et fouilles modernes
2015
Die Untersuchung betrifft die Metallfunde einer zufällig am Ende des 19. Jahrhunderts entdeckten Nekropolesowie die Reste von Körpergräbern, die 1978 am gleichen Fundplatz ausgegraben wurden. Trotz der Dürftigkeit der Informationenermöglichen die Funde eine Unterteilung in chronologische Phasen, die vom zweiten Viertel des 5. Jh. v. Chr. bis zu den letztenJahrzehnten des 3. Jh. v. Chr. reichen und den bereits bekannten Daten des regionalen Bestattungswesens entsprechen
Il Tecnezio: storia, usi e applicazioni.
2016
To bring to the knowledge of all the Italian paternity of the discovery of the first artificial chemical element in history: the Technetium or Technetium (Tc).
Letter on the election of Ernesto Foldats as a member of The Linnean Society of London
1993
Letter on the election of Ernesto Foldats as a member of The Linnean Society of London, stating that, subject to the conditions, Ernesto Foldat must attend a meeting of the society for official admission within six months of the election, but an extension is possible. A member is not entitled to vote at any meeting of the Society until an official admission has taken place. Letter on 1 page, signature of the executive secretary of the society at the bottom. Stored in the Museum of the University of Latvia Botanical and Mycological collections.
Sub-lethal effects of deltamethrin on walking behaviour and response to host kairomone of the egg parasitoid Trissolcus basalis.
2002
The lethal doses of the pyrethroid deltamethrin were estimated for the egg parasitoid Trissolcus basalis (Wollaston) (Hymenoptera: Scelionidae), and the sub-lethal effects of an LD25 on female walking behaviour were evaluated. Linear speed of treated parasitoids was reduced compared with that of untreated ones for a period of up to 24 h. The sub-lethal effects of deltamethrin on parasitoid response to patches contaminated by a contact kairomone from its host, Nezara viridula L (Heteroptera: Pentatomidae), was also evaluated. Both treated and untreated parasitoids responded to host-contaminated patches by increasing residence time and decreasing linear speed. However, treated females showed …
Intraguild interactions between two egg parasitoids exploring host patches
2010
Intraguild interactions between two egg parasitoids, Trissolcus basalis (Hymenoptera: Scelionidae) and Ooencyrtus telenomicida (Hymenoptera: Encyrtidae), exploring egg masses of the Southern Green Stink Bug (SGSB) Nezara viridula (Heteroptera: Pentatomidae), were investigated in laboratory conditions by single, simultaneous and sequential host attack experiments. Mortality of N. viridula eggs was higher in simultaneous and sequential releases compared to single species releases. In simultaneous host exploitations, T. basalis females displayed an aggressive behavior against O. telenomicida females. The outcome of multiparasitism showed that interspecific larval competition was dominated by O…
Host chemical footprints induce host sex discrimination ability in egg parasitoids
2013
Trissolcus egg parasitoids, when perceiving the chemical footprints left on a substrate by pentatomid host bugs, adopt a motivated searching behaviour characterized by longer searching time on patches were signals are present. Once in contact with host chemical footprints, Trissolcus wasps search longer on traces left by associated hosts rather than non-associated species, and, in the former case, they search longer on traces left by females than males. Based on these evidences, we hypothesized that only associated hosts induce the ability to discriminate host sex in wasps. To test this hypothesis we investigated the ability of Trissolcus basalis, T. brochymenae, and Trissolcus sp. to disti…