Search results for "target [nucleus]"
showing 10 items of 78 documents
The COMPASS Setup for Physics with Hadron Beams
2015
The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with several charged and/or neutral particles in the final state. Making use of a large part of the apparatus that was previously built for spin structure studies with a muon beam, it also features a new target system as well as new or upgraded detectors. The hadron setup is able to operate at the high incident hadron flux available at CERN. It is characterised by large angular and momentum coverages, large and nearly flat acceptances, and good two and three-particle mass resolutions. In 2008 and 2009 it was successful…
A facility for fast-neutron irradiations at Jyväskylä and its use for nuclide cross-section measurements in fission
2013
Abstract An efficient and reliable transport system for fast-neutron irradiations has been built at the Physics Department, Jyvaskyla, Finland. It is constructed from commercial bicycle components and is driven by a computer-controlled stepping motor. It can be operated in single or cyclic mode. The neutron irradiated targets are moved within 1.2 s (full stop to full stop) to a well-shielded position 3 m away where they can be removed or directly investigated by γ spectroscopy. The system has been built with the aim to experimentally verify the calculated production rates of neutron-rich nuclei in the SPIRAL2 uranium target. However, the facility can be used for various kinds of fast-neutro…
De la literatura anglesa a la catalana : un canvi de circuit lector en el relat per a adolescents
2013
The article analyses the links between the stories written for teens in an English culture and their translation into Catalan. Our starting point is the analysis of three key stories in the history of reading, and we complete this analysis with the investigation of circuit readers in Catalan that deal with translations of the accounts. The main aim of this research is to analyse how do they adapt to a new and different society, what is the context where they operate and what changes do they produce into the target culture. The conclu- sions show to what extend these translated stories represent a model of liter - ary communication once they enter the Catalan circuit readers and how do they …
Structural verification and manufacturing procedures of the cooling system, for DEMO divertor target (OVT)
2019
The paper presents the design activities and testing plan of a vertical target mock-up, developed within the pre-conceptual design phase for DEMO Work Package DIV-1 “Divertor Cassette Design and Integration” - EUROfusion Power Plant Physics & Technology (PPPT) program. Activities concerning the Divertor Outboard Vertical Target cooling mock-up are presented in term of CAD model, thermal-hydraulic numerical simulation, structural analysis, structural integrity verification and manufacturing procedure. Moreover, the mechanical dimensions of support systems for Plasma Facing Components (PFCs), manifold and diffuser have been analyzed in detail, in order to avoid structural fault during the tes…
Cost Management for IT Activities: A Case Study in the IT Division of a French Bank Using Activity-Based Costing
2013
The costs of information technology (IT) activities have been increasing rapidly these recent years, due to the technological sophistication and more market-oriented strategies that complexify the value chains of the firms. Many of these expenses do not relate to individual products but are associated to customers, market segments and distribution channels. In this context, the companies try to understand the cost of selling their products and services. This is the reason why customer-driven and market-oriented cost management approaches have gained in popularity.In this paper, we review in a first part the strategic cost management stream and the way we can give a customer orientation to c…
Preliminary selection of non-target Lepidoptera species for ecological risk assessment of Bt canola in Sicily
2011
It is essential to assess the environmental risk that Bt canola resistant to Lepidopteran pests may hold and to study its effect on species assemblages that fulfil a variety of ecosystem functions. Environmental risk assessment can be improved through the use of an ecological model which can be applied to a specific environment, so that local species can be classified functionally and prioritized to identify potential test species. Several other Lepidoptera species are also directly exposed to Bt toxin. In this paper an ecological approach was followed for selection of non-target Lepidoptera species for ecological risk assessment of Bt canola in Sicily, using data collected over a one-year …
From non-target risk assessment to Bt resistance management: the example of Bt Brassica sp. and Pieridae
2011
Insecticidal toxins produced by Bacillus thuringiensis (Bt) have been widely used in plant protection in two different ways: 1) by spraying bacterial Bt formulations, 2) by expressing their gene encoding in planta. In the second strategy, only the transgenic plants themselves are protected but insect- resistant plants could spread into natural habitats and/or the gene could be fixed in alternative hosts. It is necessary to estimate the magnitude of the possible effects on naturally occurring herbivorous insects but also on the target species, especially when they have several alternative hosts, as in the case of Pieridae. They are present both in agriculture where they could be considered p…
Pesticides: Chemical and Biological.
2013
There is a requirement by World Health Organization (WHO), Food and Agriculture Organization (FAO) and other International Organizations to develop environmentally sustainable systems for controlling pests that are less reliant on chemical pesticides as the primary management tool. However biological control alone cannot at the moment solve all pest problems and must be considered instrument to be used in combination with other methods. Compatibility of chemical pesticides (CP) and biological pesticides (BP) is one of the key for the implementation of Integrated Pest Management (IPM) programs. Testing the compatibility of CP and BP is necessary if these two agents are to be applied together…
Distribution patterns of the parrotfish Sparisoma cretense in the Plemmirio’s MPA
2016
Marine protected areas (MPAs), when designated correctly and managed well, provide a plethora of conservation benefits for current and future generations (i.e. increased habitat heterogeneity at the seascape level, increased abundance of threatened species and habitats, and maintenance of a full range of genotypes). The distribution pattern of an important target species from the Mediterranean Sea, the parrotfish Sparisoma cretense, was determined in the Plemmirio MPA (Siracuse, Italy) during summer of 2014. Sampling was carried out by means of underwater visual census techniques at two different depth (0/10 m and 10/20 m respectively) at four sampling sites within the reserve boundaries an…
EFFECT OF Bacillus thuringiensis ON RESPIRATION RATES OF MARINE INTERTIDAL MYTILASTER INTERTIDAL, MYTILASTER MINIMUS (MOLLUSCA, BIVALVIA)
2010
Increasing body of research deals with the impact of agricultural products marine environment. Indeed it is expected to detect insecticides, including the ones for biocontrol, in nearshore marine waters and thus predicting where, when and with what magnitude these impacts are most likely to occur is imperative if we are effectively interested in understanding the role of biological products as Bacillus thuringiensis (Bt) on marine biodiversity. Bivalves are important elements of marine biodiversity and very often they play a role of ecosystem engineers in that many other species structurally depend on their presence. Oxygen consumption through respiration in these organisms varies with natu…