Philippe JEAN-PIERRE

---

• Type de publi. : Autre publication
• Date de publi. : 31/05/2023
• Auteurs : Najwa AarajSlim BettaiebLoïc BidouxAlessandro BudroniVictor DyserynAndre EsserPhilippe GaboritMukul KulkarniVictor MateuMarco PalumbiLucas PerinJean-Pierre Tillich
• Organismes : Technology Innovation Institute [Abu Dhabi] Technology Innovation Institute [Abu Dhabi] Technology Innovation Institute [Abu Dhabi] Technology Innovation Institute [Abu Dhabi] XLIM Technology Innovation Institute [Abu Dhabi] XLIM Technology Innovation Institute [Abu Dhabi] Technology Innovation Institute [Abu Dhabi] Technology Innovation Institute [Abu Dhabi] Technology Innovation Institute [Abu Dhabi] Cryptologie symétrique, cryptologie fondée sur les codes et information quantique

---

Fichiers liés : PERK-spec-web.pdf

---

Source

---

• Type de publi. : Article dans une revue
• Date de publi. : 25/05/2023
• Auteurs : Julie MankikianAgnès CailleMartine Reynaud-GaubertMarie-Sara AgierJulien BermudezPhilippe BonniaudRaphaël BoriePierre Yves BrilletJacques CadranelIsabelle Court-FortuneBruno CrestaniMarie-Pierre DebrayEmmanuel GomezAnne GondouinSandrine Hirschi-SantelmoDominique Israel-BietStéphane JouneauKarine JuvinJulie LegerMallorie KerjouanCharles-Hugo MarquetteJean-Marc NaccacheHilario NunesLaurent PlantierGrégoire PrevotSébastien QuetantJulie TracletVictor ValentinYurdagül UzunhanLidwine Wémeau-StervinouTheodora Bejan-AngoulvantVincent CottinSylvain Marchand-Adam
• Organismes : CHU Trousseau [Tours] methodS in Patients-centered outcomes and HEalth ResEarch Centre d’Investigation Clinique [Tours] CIC 1415 CHU Trousseau [Tours] Hôpital Nord [CHU - APHM] Aix Marseille Université CHU Trousseau [Tours] Hôpital Nord [CHU - APHM] Aix Marseille Université Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand Lipides - Nutrition - Cancer [Dijon - U1231] Physiopathologie et Epidémiologie des Maladies Respiratoires Laboratoire d'Excellence INFLAMEX [Paris] AP-HP - Hôpital Bichat - Claude Bernard [Paris] Université Paris 13 Hôpital Avicenne [AP-HP] CHU Tenon [AP-HP] Sorbonne Université Biologie Intégrative du Tissu Osseux Santé Ingénierie Biologie Saint-Etienne Physiopathologie et Epidémiologie des Maladies Respiratoires CHU Tenon [AP-HP] Physiopathologie et Epidémiologie des Maladies Respiratoires AP-HP - Hôpital Bichat - Claude Bernard [Paris] Laboratoire d'Excellence INFLAMEX [Paris] Hôpitaux Universitaires de Strasbourg Nouvel Hôpital Civil de Strasbourg Hôpital Européen Georges Pompidou [APHP] Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou] Institut de recherche en santé, environnement et travail Centre Hospitalier Universitaire de Nice Centre hospitalier Saint-Joseph [Paris] Hôpital Européen Georges Pompidou [APHP] Centre d’Investigation Clinique [Tours] CIC 1415 Centre Hospitalier Régional Universitaire de Tours Service de pneumologie [Rennes] = Pneumology [Rennes] Hôpital Avicenne [AP-HP] CHU Tenon [AP-HP] Centre d’Etude des Pathologies Respiratoires [Tours] Centre Hospitalier Universitaire [CHU Grenoble] Centre Hospitalier Régional Universitaire de Tours Hôpital Louis Pradel [CHU - HCL] Université Claude Bernard Lyon 1 Centre Hospitalier Régional Universitaire [CHU Lille] Transplantation, Immunologie, Inflammation [Tours] Centre Hospitalier Régional Universitaire de Tours Hôpital Avicenne [AP-HP] Centre Hospitalier Régional Universitaire [CHU Lille] Transplantation, Immunologie, Inflammation [Tours] Centre Hospitalier Régional Universitaire de Tours Hôpital Louis Pradel [CHU - HCL] Université Claude Bernard Lyon 1 Centre d’Etude des Pathologies Respiratoires [Tours] Centre Hospitalier Régional Universitaire de Tours
• Publié dans European Respiratory Journal le 23/10/2020

---

Résumé : Background Standard of care for interstitial lung disease (ILD) with a nonspecific interstitial pneumonia (NSIP) pattern proposes mycophenolate mofetil (MMF) as one of the first step therapies while rituximab is used as rescue therapy. Methods In a randomised, double blind, two-parallel group, placebo-controlled trial ( NCT02990286 ), patients with connective tissue disease-associated ILD or idiopathic interstitial pneumonia (with or without autoimmune feature) and a NSIP pattern (defined on NSIP pathological pattern or on integration of clinico-biological data and a NSIP-like HRCT pattern) were randomly assigned in a 1:1 ratio to receive rituximab (1000 mg) or placebo on day 1 and day 15 in addition to MMF (2 g daily) for six months. The primary endpoint was the change in percent of predicted forced vital capacity (FVC) from baseline to 6 months analysed by a linear mixed model for repeated measures analysis. Secondary endpoints included progression-free survival (PFS) up to 6 months and safety. Findings Between January 2017 and January 2019, 122 randomised patients received at least one dose of rituximab (n=63) or placebo (n=59). The least-squares mean change from baseline to 6 months in FVC (% predicted) was +1.60 ( se 1.13) in the rituximab+MMF group and −2.01 ( se 1.17) in the placebo+MMF group (between-group difference, 3.60 [95% CI 0.41 to 6.80]; p=0.0273). PFS was better in the rituximab+MMF group (crude HR 0.47 [95%CI 0.23 to 0.96]; p=0.03). Serious adverse events occurred in 26 patients of the rituximab+MMF group (41%) and in 23 of the placebo+MMF group (39%). Nine infections were reported in the rituximab+MMF group (five bacterial infections, 3 viral infections, 1 other) and four bacterial infections in the placebo+MMF group. Interpretation Combination of rituximab and MMF was superior to MMF alone in patients with ILD and a NSIP pattern. The use of this combination must consider the risk of viral infection.

---

Fichiers liés : Mankikian et al - 2023 - Rituximab and mycophenolate mofetil combination _EVERILD ERJ R2 clean+fig.pdf Mankikian et al - 2023 - Rituximab and mycophenolate mofetil combination _EVERILD ERJ R2 clean+fig.pdf

---

Source

---

• Type de publi. : Communication dans un congrès
• Date de publi. : 24/05/2023
• Auteurs : P.-B. VigneronRaphaël PederivaPhilippe ArtillanClément GeffroyGiorgos GeorgiouChristopher BäuerleJean-François RouxJean-Louis Coutaz
• Organismes : Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation Circuits électroniques quantiques Alpes University of Glascow Circuits électroniques quantiques Alpes Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation

---

Source

---

• Type de publi. : Article dans une revue
• Date de publi. : 24/05/2023
• Auteurs : Arnaud PagèsNadège CostaMichaël MouniéPhilippe CestacPhilipe Barreto de SoutoYves RollandBruno VellasLaurent MolinierBlandine Juillard-CondatBruno VellasSophie GuyonnetIsabelle CarriéLauréane BrigitteCatherine FaisantFrançoise LalaJulien DelrieuHélène VillarsEmeline CombrouzeCarole BadufleAudrey ZuerasSandrine AndrieuChristelle CantetChristophe MorinGabor Abellan van KanCharlotte DupuyYves RollandCéline CaillaudPierre-Jean OussetFrançoise LalaSherry WillisSylvie BellevilleBrigitte Gilbert-DussardierFrancine FontaineJean-François DartiguesIsabelle MarcetFleur DelvaAlexandra FoubertSandrine CerdaMarie-Noëlle CuffiCorinne CostesOlivier RouaudPatrick ManckoundiaValérie QuipourtSophie MarilierEvelyne FranonLawrence BoriesMarie-Laure PaderMarie-France BassetBruno LapoujadeValérie FaureMichael Li Yung TongChristine Malick-LoiseauEvelyne Cazaban-CampistronFrançoise DesclauxColette BlatgeThierry DantoineCécile Laubarie-MouretIsabelle SaulnierJean-Pierre ClémentMarie-Agnès PicatLaurence Bernard-BourzeixStéphanie WilleboisIléana DésormaisNoëlle CardinaudMarc BonnefoyPierre LivetPascale RebaudetClaire GédéonCatherine BurdetFlavien TerracolAlain PesceStéphanie RothSylvie ChaillouSandrine LouchartKristel SudresNicolas LebrunNadège Barro-BelayguesJacques TouchonKarim BennysAudrey GabelleAurélia RomanoLynda TouatiCécilia MarelliCécile PaysPhilippe RobertFranck DuffClaire GervaisSébastien GonfrierYannick GasnierSerge BordesDanièle BegorreChristian CarpuatKhaled KhalesJean-François LefebvreSamira Misbah El IdrissiPierre SkolilJean-Pierre SallesCarole DufouilStéphane LehéricyMarie ChupinJean-François ManginAli BouhayiaMichèle AllardFrédéric RicolfiDominique DuboisMarie Paule Bonceour MartelFrançois CottonAlain BonaféStéphane ChanaletFrançoise HugonFabrice BonnevilleChristophe CognardFrançois CholletPierre PayouxThierry VoisinJulien DelrieuSophie PeifferAnne HitzelMichèle AllardMichel ZancaJacques MonteilJacques DarcourtLaurent MolinierHélène DerumeauxNadège CostaBertrand PerretClaire VinelSylvie Caspar-BauguilPascale Olivier-AbbalSandrine AndrieuChristelle CantetNicola Coley
• Organismes : Centre d'Epidémiologie et de Recherche en santé des POPulations Institut universitaire de France Equipe EQUITY (CERPOP) Equipe EQUITY (CERPOP) Equipe AGING (CERPOP) Equipe AGING (CERPOP) Equipe AGING (CERPOP) Equipe AGING (CERPOP) Equipe EQUITY (CERPOP) Equipe BIOETHICS (CERPOP) Equipe AGING (CERPOP) Equipe AGING (CERPOP)
• Publié dans Drugs and Aging le 01/11/2020

---

Résumé : Introduction: Potentially inappropriate medication prescribing (PIP) among older patients is associated with an increased risk of adverse events and hospitalization, and sometimes increased healthcare costs. Objective: The aim of this study was to explore the association between healthcare costs and PIP exposure among older patients. Methods: Analyses were conducted using data from the Multidomain Alzheimer Preventive Trial (MAPT). A computer algorithm was constructed to detect PIP based on various different explicit criteria-based tools, and the results were expressed in number of medication-related potential non-compliances (MRNCs). A prescription was considered potentially inappropriate if there were one or more MRNCs. We performed a cost analysis from the French National Health Insurance perspective, and also performed a multivariate analysis to identify the association between healthcare costs and PIP (number of MRNCs). Results: The computer algorithm analyzed medication prescribing from included patients (N = 1525 aged 75.3 ± 4.4 years; 64% women [n = 978]). PIP was associated with increased total healthcare costs and non-medication healthcare costs after adjusting for potential confounders. We also noted that healthcare costs tended to increase with the number of MRNCs. The mean additional healthcare costs were €517, €921, and €1669 per patient and year for patients with one or two MRNCs, three or four MRNCs, and five or more MRNCs, respectively, in comparison with patients with appropriate medication prescriptions. Conclusion: These observations led us to conclude that interventions focused on reducing PIP could result in savings. Trial registration: ClinicalTrials.gov: NCT00672685.

---

Source

---

• Type de publi. : Article dans une revue
• Date de publi. : 23/05/2023
• Auteurs : Rachel BellonePierre LechatLaurence MoussonValentine GilbartGéraldine PiorkowskiChloé BohersAndres MeritsEtienne KornobisJulie ReveillaudChristophe PaupyMarie VazeilleJean-Philippe MartinetYoann MadecXavier de LamballerieCatherine DaugaAnna-Bella Failloux
• Organismes : Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Collège Doctoral Hub Bioinformatique et Biostatistique - Bioinformatics and Biostatistics HUB Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Unité des Virus Emergents Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Tartu University Hospital Hub Bioinformatique et Biostatistique - Bioinformatics and Biostatistics HUB Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Epidémiologie des Maladies Emergentes - Emerging Diseases Epidemiology Unité des Virus Emergents Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors
• Publié dans Journal of Travel Medicine le 27/10/2020

---

Résumé : BackgroundClimate change and globalization contribute to the expansion of mosquito vectors and their associated pathogens. Long spared, temperate regions have had to deal with the emergence of arboviruses traditionally confined to tropical regions. Chikungunya virus (CHIKV) was reported for the first time in Europe in 2007, causing a localized outbreak in Italy, which then recurred repeatedly over the years in other European localities. This raises the question of climate effects, particularly temperature, on the dynamics of vector-borne viruses. The objective of this study is to improve the understanding of the molecular mechanisms set up in the vector in response to temperature.MethodsWe combine three complementary approaches by examining Aedes albopictus mosquito gene expression (transcriptomics), bacterial flora (metagenomics) and CHIKV evolutionary dynamics (genomics) induced by viral infection and temperature changes.ResultsWe show that temperature alters profoundly mosquito gene expression, bacterial microbiome and viral population diversity. We observe that (i) CHIKV infection upregulated most genes (mainly in immune and stress-related pathways) at 20°C but not at 28°C, (ii) CHIKV infection significantly increased the abundance of Enterobacteriaceae Serratia marcescens at 28°C and (iii) CHIKV evolutionary dynamics were different according to temperature.ConclusionThe substantial changes detected in the vectorial system (the vector and its bacterial microbiota, and the arbovirus) lead to temperature-specific adjustments to reach the ultimate goal of arbovirus transmission; at 20°C and 28°C, the Asian tiger mosquito Ae. albopictus was able to transmit CHIKV at the same efficiency. Therefore, CHIKV is likely to continue its expansion in the northern regions and could become a public health problem in more countries than those already affected in Europe.

---

Source

---

• Type de publi. : Communication dans un congrès
• Date de publi. : 22/05/2023
• Auteurs : Josselin Le Gal La SalleJean Castaing-LasvignottesMathieu DavidPhilippe Lauret
• Organismes : Physique et Ingénierie Mathématique pour l'Énergie, l'environnemeNt et le bâtimenT Physique et Ingénierie Mathématique pour l'Énergie, l'environnemeNt et le bâtimenT

---

Résumé : L’intégration massive des énergies renouvelables intermittentes au sein des réseaux électriques insulaires est un défi scientifique et technique. Pour y faire face, le laboratoire PIMENT de l’Université de La Réunion s’associe via le projet TwIn Solar à l’Université technique du Danemark (DTU) et au Franuhofer-ISE pour favoriser le transfert de connaissance, améliorer sa structuration et in fine accroître sa capacité à répondre à ce défi. Un projet de recherche portant sur le renforcement de la capacité de production solaire du campus universitaire de Terre Sainte à Saint-Pierre (île de La Réunion) et la proposition d’une transformation structurelle de son réseau énergétique afin de viser un taux d’autoproduction de 80% est intégré à TwIn Solar. Atteindre 80% d’autoproduction sur le campus de Terre Sainte, présenté sur la figure 1, nécessite d’imaginer, de dimensionner et de modéliser un système énergétique à même de couvrir les besoins du micro-réseau. L’énergie solaire produite sera tributaire des variations temporelles de la ressource et un système de stockage permettant d’y répondre doit être identifié. L’objectif est alors de trouver la combinaison la plus adaptée de technologies de stockage, en fonction de leurs caractéristiques techniques et des rôles attendus du stockage pour la gestion d’un micro-réseau (réserve de puissance électrique, lissage infra-journalier et saisonnier de la production solaire, déplacement d’énergie). En premier lieu, les besoins en puissance et en énergie seront quantifiés pour différentes échelles temporelles (infra-horaire, journalière, saisonnière). Des complémentarités devront ensuite être trouvées entre différentes technologies de stockage pour répondre efficacement aux besoins électriques et thermiques. Les technologies utilisant l’hydrogène pourraient trouver leur place dans le mix final. Un algorithme d’optimisation sera développé afin de dimensionner les différents composants.

---

Source

---

• Type de publi. : Pré-publication, Document de travail
• Date de publi. : 20/05/2023
• Auteurs : Anas MifraniPhilippe Saint-PierreNicolas Savy
• Organismes : Institut de Mathématiques de Toulouse UMR5219 Institut de Mathématiques de Toulouse UMR5219 Institut Universitaire de Technologie - Paul Sabatier Institut de Mathématiques de Toulouse UMR5219

---

Résumé : Inherent in model selection is the problem of simultaneously optimizing multiple performance metrics. Some of these metrics express potentially conflicting criteria, like accuracy and simplicity. Pareto optimization is a branch of mathematical optimization that deals precisely with problems involving conflicting objective functions. In this article, an algorithm was developed that searches automatically for Pareto optimal linear regression models given a dataset and a set of performance metrics. The optimization task was framed as one of sequential variable selection on a graph. A search strategy was proposed that draws on ant colony optimization, a probabilistic technique well suited for graph-based problems. Experiments were run in which the metrics to be minimized were the root-mean-square error, expressing accuracy, and the number of coefficients, expressing simplicity. To substantiate the usefulness of our algorithm, cases were presented in which it outperformed AIC-based stepwise regression. Results suggested that our algorithm copes well with small datasets and correlated predictors, that it is efficient and that it informs model selection. Key properties of our algorithm were discussed and areas of improvement highlighted.

---

Fichiers liés : Paper___JCGS_version-17.pdf

---

Source

---

• Type de publi. : Article dans une revue
• Date de publi. : 18/05/2023
• Auteurs : Antoine BenardRemi SittaAntoine Pierre BrezinBeatrice CochenerDominique MonnetPhilippe DenisPierre-Jean PisellaNathalie HayesCedric Schweitzer
• Organismes : Bordeaux population health Bordeaux population health
• Publié dans JAMA Ophthalmology le 30/10/2020

---

Résumé : IMPORTANCE: The efficacy and safety of femtosecond laser-assisted cataract surgery is well documented. An important requirement for decision makers is the evaluation of the cost-effectiveness of femtosecond laser-assisted cataract surgery (FLACS) over a sufficiently long horizon. Evaluating the cost-effectiveness of this treatment was a preplanned secondary objective of the Economic Evaluation of Femtosecond Laser Assisted Cataract Surgery (FEMCAT) trial. OBJECTIVE: To estimate the cost utility of FLACS compared with phacoemulsification cataract surgery (PCS) on a 12-month time horizon. DESIGN, SETTING, AND PARTICIPANTS: This multicenter randomized clinical trial compared FLACS with PCS in parallel groups. All FLACS procedures were performed using the CATALYS precision system. Participants were recruited and treated in ambulatory surgery settings in 5 university-hospital centers in France. All consecutive patients eligible for a unilateral or bilateral cataract surgery 22 years or older with written informed consent were included. Data were collected from October 2013 to October 2018, and data were analyzed from January 2020 to June 2022. INTERVENTIONS: FLACS or PCS. MAIN OUTCOMES AND MEASURES: Utility was measured through the Health Utility Index questionnaire. Costs of cataract surgery were estimated by microcosting. All inpatient and outpatient costs were collected from the French National Health Data System. RESULTS: Of 870 randomized patients, 543 (62.4%) were female, and the mean (SD) age at surgery was 72.3 (8.6) years. A total of 440 patients were randomized to receive FLACS and 430 to receive PCS; the rate of bilateral surgery was 63.3% (551 of 870). The mean (SD) costs of cataract surgery were €1124.0 (€162.2; US $1235) for FLACS and €565.5 (€61.4; US $621) for PCS. The total mean (SD) cost of care at 12 months was €7085 (€6700; US $7787) in participants treated with FLACS and €6502 (€7323; US $7146) in participants treated with PCS. FLACS yielded a mean (SD) of 0.788 (0.009) quality-adjusted life-years (QALYs), and PCS yielded 0.792 (0.009) QALYs. The difference in mean costs was €545.9 (95% CI, -434.1 to 1525.8; US $600), and the difference in QALYs was -0.004 (95% CI, -0.028 to 0.021). The incremental cost-effectiveness ratio (ICER) was -€136 476 (US $150 000) per QALY. The cost-effectiveness probability of FLACS compared with PCS was 15.7% for a cost-effectiveness threshold of €30 000 (US $32 973) per QALY. At this threshold, the expected value of perfect information was €246 139 079 (US $270 530 231). CONCLUSIONS AND RELEVANCE: The ICER of FLACS compared with PCS was not within the $50 000 to $100 000 per QALY range frequently cited as cost-effective. Additional research and development on FLACS is needed to improve its effectiveness and lower its price. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT01982006.

---

Source

---

• Type de publi. :
• Date de publi. : 14/05/2023
• Auteurs : Régis HocdéGérard ThouzeauSophie BourquinLaurent BorelMathieu CoulangeJean-Pierre FéralÉric FeunteunStéphan JacquetPhilippe Le BrasLine Le GallSébastien LegrandPhilippe LenfantMario LepageCaroline PlayGilles SaragoniQuentin Schull
• Organismes : MARine Biodiversity Exploitation and Conservation - MARBEC Laboratoire des Sciences de l'Environnement Marin (LEMAR) Institut de Recherche pour le Développement Centre Camille Jullian - Histoire et archéologie de la Méditerranée et de l'Afrique du Nord de la protohistoire à la fin de l'Antiquité Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research Hôpital Sainte-Marguerite [CHU - APHM] Institut méditerranéen de biodiversité et d'écologie marine et continentale Biologie des Organismes et Ecosystèmes Aquatiques Centre de Géo-Écologie Littorale Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques Institut Français de Recherche pour l'Exploitation de la Mer Institut de Systématique, Evolution, Biodiversité Département des Recherches Archéologiques Subaquatiques et Sous-Marines [Marseille] Centre de Formation et de Recherche sur les Environnements Méditérranéens Ecosystèmes aquatiques et changements globaux Institut de Recherche pour le Développement Centre de Formation et de Recherche sur les Environnements Méditérranéens MARine Biodiversity Exploitation and Conservation - MARBEC

---

Résumé : The French National Committee for Scientific Diving (CNPS) takes on different tasks including acting as an observatory of occupational scientific diving practices and innovations (Thouzeau et al., 2019). Since 1991 in France, scientific diving has been recognized by law as an occupational sector and is therefore regulated with the aim to reduce the hyperbaric risk. Currently, French scientific diving encompasses many fields such as life sciences and ecology, geosciences, social & cultural sciences including archeology, health & food, engineering sciences, energy... Due to the existence of overseas territories - with France's maritime spaces representing the world's second largest exclusive economic zone - French territories display an extensive variety of submarine habitats. Furthermore, the historical richness of scientific diving in France has led the French scientific diving community to be involved in all oceans worldwide. All subaquatic ecosystems, from the polar regions to the tropical belt, from drowned karsts to freshwater and high altitude lakes, including mesocosms and artificial structures are studied by diving scientists. On top of the traditional diving methods (apnea, open circuit and hookah) scientific diving benefits in recent years from the use of closed-circuit rebreathers but also from combining CCR and saturation methods, which greatly enhanced the study of the mesophotic zones. In light of the diversity of environments, disciplines and scientific issues, scientific divers are continuously innovating to perform outstanding research. This presentation will outline the recent work of the last decade highlighting the importance of scientific diving in science (in France).Thouzeau G., Hocdé R., Beurier J.-P., Coulange M. et al. (2019). The French National Committee on Scientific Diving (CNPS): a key actor for developing scientific diving in France. 5th European Conference on Scientific Diving (ECSD), Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland, Apr 2019, Sopot, Poland. pp.61-62, doi:10.23708/fdi:010076263

---

Fichiers liés : Hocde-et-al-2023 - Poster ECSD7 - Scientific diving in France an overview of the current practices in science vDef.pdf

---

Source

---

• Type de publi. : Article dans une revue
• Date de publi. : 12/05/2023
• Auteurs : Pangsui Usifu LingeTony GergesPascal BevilacquaJean-Marc DuchampPhilippe BenechJacques VerdierPhilippe LombardMichel CabreraPierre TsafackFabien MieyevilleBruno Allard
• Organismes : Ampère, Département Bioingénierie Ampère, Département Energie Electrique Ampère, Département Energie Electrique Laboratoire de Génie Electrique de Grenoble Laboratoire de Génie Electrique de Grenoble Ampère, Département Energie Electrique Ampère, Département Energie Electrique Ampère University of Buéa Ampère, Département Energie Electrique Ampère, Département Energie Electrique
• Publié dans Journal of Low Power Electronics and Applications le 21/10/2020

---

Résumé : This work details the design and experimental characterization of a 2D rectenna for scavenging radio frequency energy at 2.45 GHz (WiFi band), fabricated on polylactic acid polymer (PLA) using a plastronics approach. PLA is the RF substrate of both antenna and rectifier. The two transmission line (TTL) approach is used to characterize the substrate properties to be considered during design. A linearly polarized patch antenna with microstrip transmission feeding is connected to a single series diode rectifier through a T-matching network. The antenna has simulated and measured gain of 7.6 dB and 7.5 dB, respectively. The rectifier has a measured DC output power of 0.96 µW at an optimal load of 2 kΩ under RF input power of −20 dBm at 2.45 GHz. The power conversion efficiency is 9.6% in the latter conditions for a 54 × 36 mm patch antenna of a 1.5 mm thick PLA substrate obtained from additive manufacturing. The power conversion efficiency reaches a value of 28.75% when the input power is −10 dBm at 2.45 GHz. This corresponds to a peak DC power of 28.75 µW when the optimal load is 1.5 kΩ. The results compare significantly with the ones of a similar rectenna circuit manufactured on preferred RF substrate.

---

Fichiers liés : jlpea-13-00034-with-cover.pdf

---

Source