Radiation tolerant D/A converters for the LHC cryogenic system

Franco, Francisco J.; Zong, Yun; Agapito, Juan; Marques, J.G.; Fernandes, A.C.; Casas‐Cubillos, J.; Rodríguez-Ruiz, Miguel Ángel

doi:10.1016/j.nima.2005.07.031

Cited by 17 publications

(4 citation statements)

References 6 publications

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“…clemenules) were grown at the Instituto Valenciano de Investigaciones Agrarias (IVIA) under standard agricultural practices. The 39B3 and 39E7 mutants were obtained by fast neutrons irradiation of clemenules buds [ 43 ].…”

Section: Methodsmentioning

confidence: 99%

Identification of a GCC transcription factor responding to fruit colour change events in citrus through the transcriptomic analyses of two mutants

et al. 2010

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BackgroundExternal ripening in Citrus fruits is morphologically characterized by a colour shift from green to orange due to the degradation of chlorophylls and the accumulation of carotenoid pigments. Although numerous genes coding for enzymes involved in such biochemical pathways have been identified, the molecular control of this process has been scarcely studied. In this work we used the Citrus clementina mutants 39B3 and 39E7, showing delayed colour break, to isolate genes potentially related to the regulation of peel ripening and its physiological or biochemical effects.ResultsPigment analyses revealed different profiles of carotenoid and chlorophyll modification in 39B3 and 39E7 mutants. Flavedo from 39B3 fruits showed an overall delay in carotenoid accumulation and chlorophyll degradation, while the flavedo of 39E7 was devoid of the apocarotenoid β-citraurin among other carotenoid alterations. A Citrus microarray containing about 20,000 cDNA fragments was used to identify genes that were differentially expressed during colour change in the flavedo of 39B3 and 39E7 mutants respect to the parental variety. The results highlighted 73 and 90 genes that were respectively up- and down-regulated in both mutants. CcGCC1 gene, coding for a GCC type transcriptional factor, was found to be down-regulated. CcGCC1 expression was strongly induced at the onset of colour change in the flavedo of parental clementine fruit. Moreover, treatment of fruits with gibberellins, a retardant of external ripening, delayed both colour break and CcGCC1 overexpression.ConclusionsIn this work, the citrus fruit ripening mutants 39B3 and 39E7 have been characterized at the phenotypic, biochemical and transcriptomic level. A defective synthesis of the apocarotenoid β-citraurin has been proposed to cause the yellowish colour of fully ripe 39E7 flavedo. The analyses of the mutant transcriptomes revealed that colour change during peel ripening was strongly associated with a major mobilization of mineral elements and with other previously known metabolic and photosynthetic changes. The expression of CcGCC1 was associated with peel ripening since CcGCC1 down-regulation correlated with a delay in colour break induced by genetic, developmental and hormonal causes.

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Section: Methodsmentioning

confidence: 99%

Identification of a GCC transcription factor responding to fruit colour change events in citrus through the transcriptomic analyses of two mutants

et al. 2010

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“…The performance of Red 4034 dosemeters to monitor photon doses will also be extended to the fast neutron irradiation facility for electronic components of the RPI (Franco et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…The activities currently underway cover a broad range of applications from irradiation of electronic circuits (Franco et al, 2005) to calibration of detectors for dark matter search (Girard et al, 2005), through more classical subjects such as neutron activation analysis (Dias and Prudêncio, 2007). Each activity has specific dosimetry needs.…”

Section: Introductionmentioning

confidence: 99%

Photon dosimetry using Red 4034 Harwell dosemeters in a pool-type research reactor

Santos

Marques

2008

Radiation Measurements

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“…A fast neutron irradiation facility was built at the RPI to test commercial electronic components for CERN within a program started in 1999 [2]. This facility currently allows irradiating electronic modules with fast neutron fluxes (E > 1 MeV) up to 4·10 8 n/cm 2 /s; the simultaneous gamma dose rate is up to 60 Gy/h.…”

Section: A Experimental Tests Performed Withmentioning

confidence: 99%

Jules Horowitz Reactor project. Exploration tests concerning WIFI modules behaviour under gamma flux

Gaillot

Pouchin

Marques

et al. 2011

2011 12th European Conference on Radiation and Its Effects on Components and Systems

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Abstract-Within the framework of experimental field on technologies developments for research reactors applications, an experimental program dedicated to electronics behaviour under flux has been performed on wireless (WIFI) modules. The interest of using the WIFI modules in an industrial facility is to limit and some cases to work without transmission lines between the experimental equipments in which sensors are embedded and the facility (i.e data acquisition room). The objectives of these tests were to determine the capabilities of WIFI modules to work in Nuclear Environment, to define the limitation due to the dose levels and to propose some adaptations in term of integration. These actions have been carried out on [2009][2010] period, in sharing collaboration between CEA (Commissariat a lEnergie Atomique et aux Energies Alternatives, France), ITN (Nuclear and Technological Institute, Portugal) and UCM (University Complutense of Madrid, Spain). The experimental program on WIFI modules took into account a first phase of data determination of dose levels based on Jules Horowitz Reactor environment. The second phase (performed by UCM and ITN) was dedicated to the selection of modules focused on commercial type (COTS approach). Then, irradiation tests of these modules using a 60 Co source and in the RPI reactor have been performed by ITN with UCM. The results obtained are presented and discussed. As conclusion, some recommendations are given.

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Radiation tolerant D/A converters for the LHC cryogenic system

Cited by 17 publications

References 6 publications

Identification of a GCC transcription factor responding to fruit colour change events in citrus through the transcriptomic analyses of two mutants

Identification of a GCC transcription factor responding to fruit colour change events in citrus through the transcriptomic analyses of two mutants

Photon dosimetry using Red 4034 Harwell dosemeters in a pool-type research reactor

Jules Horowitz Reactor project. Exploration tests concerning WIFI modules behaviour under gamma flux

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