MétaCan
Menu
Back to cohort
Record W6981680712

Étude de la radiosensibilisation virale dans les aliments comme la laitue iceberg après utilisation de traitements combinés

2019· dissertation· fr· W6981680712 on OpenAlexfundno aff

Bibliographic record

VenueEspaceINRS Institutional Digital Repository (Institut National de la Recherche Scientifique) · 2019
Typedissertation
Languagefr
FieldArts and Humanities
TopicAncient Egypt and Archaeology
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of CanadaInternational Atomic Energy AgencyArmand-Frappier Foundation
KeywordsResource consumptionLung diseaseBiological effect
DOInot available

Abstract

fetched live from OpenAlex

<br>La surface de la laitue iceberg est favorable au développement de pathogènes comme le Norovirus (NoV).
\nCelui-ci est éliminé par la chaleur, inapte sur les produits consommés frais. L’irradiation demeure une
\ntechnologie intéressante, mais les virus en sont résistants. Le but de ce projet était de mettre au point une
\nméthode combinée afin d’augmenter la radiosensibilisation du NoV pour ainsi réduire la dose d’irradiation
\nnécessaire pour les éliminer ou pour les amener à un niveau propre à la consommation pour l’Homme. Le
\nprojet consistait à évaluer les effets d’extraits naturels et d’O3 combinés à l’irradiation sur la
\nradiosensibilisation virale. Un test in-situ a aussi été réalisé afin de voir l’efficacité du traitement sur les
\npropriétés physico-chimiques et la qualité microbienne de la salade. Les objectifs étaient : 1) évaluer les
\neffets d’extraits naturels sur l’élimination virale, 2) déterminer les effets de l’O3 sur le virus et établir la
\nconcentration optimale, 3) déterminer la D10 (kGy) en absence et en présence d’antimicrobiens naturels et
\nla radiosensibilisation en présence d’antimicrobiens naturels et 4) évaluer in-situ les traitements
\ncombinés sur l’élimination virale, bactérienne et les propriétés physico-chimiques. Les résultats ont
\nmontré que dose optimale de jus de canneberge était de 0.25 %, car la D10 était 1.33 pour son activité
\nantimicrobienne et 2.00 pour le contrôle, donc la radiosensibilisation était de 1.5 fois par rapport à
\nl’irradiation seule. La dose optimale pour l’O3 était de 5 ppm durant 7.5 minutes. La combinaison de
\ntraitement optimale (JC-0.25%+ O3-5 ppm + irradiation-1.5 kGy) a montré une réduction d’environ 2 log
\nTCID50 après traitement et entreposage à 4°C. L’étude in-situ n’a montré aucun effet négatif sur la texture,
\nle goût et la couleur de la laitue (p > 0.05) et ce même durant l’entreposage. L’analyse de la chlorophylle a
\nmontré une augmentation non significative de 5.23 à 9.03 μg/mL au cours de l’entreposage 10 jours après
\nle traitement combiné comparativement au contrôle qui a lui-même diminué significativement durant
\nl’entreposage de 9.02 à 3.12 μg/mL, démontrant un bienfait de la combinaison des traitements.</br>
\n
\n<br>The surface of iceberg lettuce is favorable for the development of pathogens such as Norovirus (NoV). It
\nis eliminated by heat, not possible on products eaten raw. Irradiation remains an interesting technology,
\nbut viruses are resistant. The goal of this project was to develop a combined method to increase the
\nradiosensitization of NoV to reduce the dose of irradiation needed to eliminate them or to bring them
\ndown to levels which are safe for human consumption. The project evaluated the effects of natural extracts
\nand O3 combined with irradiation on viral radiosensitization. An in-situ test was also conducted to see the
\neffectiveness of the treatment on the physico-chemical properties and microbial quality of the salad. The
\nobjectives were: 1) to evaluate the effects of natural extracts on virus elimination, 2) to determine the
\neffects of O3 on the virus and to establish the optimal concentration, 3) to determine the D10 (kGy) in the
\nabsence and in the presence natural antimicrobials and radiosensitization in the presence of natural
\nantimicrobials; and 4) in-situ evaluation of combined treatments on viral, bacterial and physicochemical
\nproperties. The results showed that the optimal dose of cranberry juice was 0.25 %, since the D10 was 1.33
\nfor its antimicrobial activity and 2.00 for the control, so the radiosensitization was 1.5 times compared to
\nthe irradiation alone. The optimal dose for O3 was 5 ppm for 7.5 minutes. The optimal treatment
\ncombination (CJ-0.25% + O3-5 ppm + irradiation-1.5 kGy) showed a reduction of 2 log TCID50 / mL after
\ntreatment and storage at 4 ° C. The in-situ study showed no negative effect on the texture, taste and color
\nof lettuce (p> 0.05) even during storage. Chlorophyll analysis showed a non-significant increase from 5.23
\nto 9.03 μg / mL during storage 10 days after the combined treatment compared to the control which
\ndecreased significantly during storage from 9.02 to 3.12 μg / mL, demonstrating a benefit from the
\ncombination of treatments.</br>

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.006
metaresearch head score (Gemma)0.003
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies, Scholarly communication, Research integrity
Consensus categoriesScience and technology studies
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.817
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0060.003
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.000
Science and technology studies0.0030.005
Scholarly communication0.0020.002
Open science0.0010.000
Research integrity0.0020.002
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.121
GPT teacher head0.328
Teacher spread0.207 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designTheoretical or conceptual
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2019
Admission routes1
Has abstractyes

Explore more

Same venueEspaceINRS Institutional Digital Repository (Institut National de la Recherche Scientifique)Same topicAncient Egypt and ArchaeologyFrench-language works237,207