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Search Results: 1 - 10 of 4370 matches for " Dominique Bertrand "
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élaboration d’une légende auctoriale cynique : l’autoportrait de Dassoucy en Diogène de la prison
Dominique Bertrand
Les Dossiers du Grihl , 2011, DOI: 10.4000/dossiersgrihl.4919
Abstract: Dans le dialogue de La Prison publié en 1674 et relatif à son incarcération au Chatelet, Dassoucy relate une expérience carcérale extrême qui prélude à une réaffirmation identitaire compensatoire : en s’autoproclamant Diogène de la prison , Dassoucy élabore un mythe personnel et auctorial favorisant une émancipation radicale, mais ambigu , de la parole et du rire. In his dialogue The Prison published in 1674, Dassoucy tells of his extrême experience in the Chatelet. But he also tries to establish a compensatory identity, with the claims that he is a kind of Diogenes of the prison . This gives him a way to fuel a personal myth, thanks to a radical but ambiguous emancipation of speech and laughter.
Towards the Unification of All Interactions (The First Part: The Spinor Wave)  [PDF]
Claude Daviau, Jacques Bertrand, Dominique Girardot
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.712143
Abstract: For the unification of gravitation with electromagnetism, weak and strong interactions, we use a unique and very simple framework, the Clifford algebra of space \"\". We enlarge our previous wave equation to the general case, including all leptons, quarks and antiparticles of the first generation. The wave equation is a generalization of the Dirac equation with a compulsory non-linear mass term. This equation is form invariant under the \"\" group of the invertible elements in the space algebra. The form invariance is fully compatible with the \"\" gauge invariance of the standard model. The wave equations of the different particles come by Lagrange equations from a Lagrangian density and this Lagrangian density is the sum of the real parts of the wave equations. Both form invariance and gauge invariance are exact symmetries, not only partial or broken symmetries. Inertia is already present in the \"\" part of the gauge group and the inertial chiral potential vector simplifies weak interactions. Relativistic quantum physics is then a naturally yet unified theory, including all interactions.
Towards the Unification, Part 2: Simplified Equations, Covariant Derivative, Photons  [PDF]
Claude Daviau, Jacques Bertrand, Dominique Girardot
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.716207
Abstract:

We continue the study of the Standard Model of Quantum Physics in the Clifford algebra of space. We get simplified mass terms for the fermion part of the wave. We insert the simplified equations in the frame of General Relativity. We construct the electromagnetic field of the photon, alone boson without proper mass. We explain how the Pauli principle comes from the equivalence principle of General Relativity. We transpose in the frame of the algebra of space the second quantification of the electromagnetic field. We discuss the changes introduced here.

From contradiction to conciliation: a way to "dualize" sheaves
Dominique Lambert,Bertrand Hespel
Mathematics , 2011,
Abstract: Our aim is to give some insights about how to approach the formal description of situations where one has to conciliate several contradictory statements, rules, laws or ideas. We show that such a conciliation structure can be naturally defined on a topological space endowed with the set of its closed sets and that this specific structure is a kind of "dualization" of the sheaf concept where "global" and "local" levels are reversed.
E-Cigarette: A New Tobacco Product for Schoolchildren in Paris  [PDF]
Bertrand Dautzenberg, Pierre Birkui, Maryvonne No?l, Johanna Dorsett, Monique Osman, Marie-Dominique Dautzenberg
Open Journal of Respiratory Diseases (OJRD) , 2013, DOI: 10.4236/ojrd.2013.31004
Abstract:

Objectives: To explore if the dramatic decrease in price of e-cigarette has transformed this new product into a product used for tobacco initiation among a teenage population. Methods: The authors added a question in 2012 on e-cigarette in the yearly survey on tobacco consumption in Paris schoolchildren. The study is conducted on a randomly selected sample from 2% of classes since 1991. Results: 277 (8.1%) of the 3409 schoolchildren studied (including 575 non responders to this question) reported having had an experience with e-cigarette. Experimentation rate is 6.4% among the 12 - 14-year-old, 11.8% among the 15 - 16-year-old and 9% among the 17-year-old schoolchildren. Among the 12 - 14- year-old schoolchildren, 64.4% of e-cigarette experimentation was by non-smokers. Of the 17-year-old teenagers who had used e-cigarettes, 12.4% were non-smokers. For the whole population, 33.2% of those having tried e-cigarette are non-smoker, 22.7% occasional smoker, 3.6% ex-smoker and 40.4% daily smoker. Those who experiment cannabis, shisha or binge-drinking are more frequently users of e-cigarette. In the smoker group, there is an inverse trend of rela- tionship between the readiness to quit tobacco and the rate of use of e-cigarette. Conclusion: For teenager’s, e-cigare- ttes have become not a product to aid quit tobacco but a product for experimentation and initiation of cigarette use. Regulation is urgently needed to control the emergent use of this new tobacco product by children.

“Apprentis Chercheurs” in Drugs Disorders: A New Concept in Prevention Strategy  [PDF]
Bertrand Nalpas, Jérémie Cordonnier, Morgane Le Bras, Dominique Donnet-Kamel
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.521205
Abstract: We report a new strategy based on scientific education for sensitizing teenagers to the addiction-related harms. This strategy is diverted from a program called “Apprentis Chercheurs”. Pairs of young adolescents are welcome in research laboratories working on addiction all along the school year. They are fully integrated in the research team and directly participate to the experiments under the supervision of a senior researcher. At the end of the school year, they orally communicate their results to other students of their schools, their teachers, their parents and the research team in a peer-to-peer approach during a scientific conference organized within every participant research center.
DRIED GRASS SILAGE ANALYSIS BY NIR REFLECTANCE SPECTROSCOPY-A COMPARISON OF STEPWISE MULTIPLE LINEAR AND PRINCIPAL COMPONENT TECHNIQUES FOR CALIBRATION DEVELOPMENT ON RAW AND TRANSFORMED SPECTRAL DATA
GERARD DOWNEY,PAUL ROBERT,DOMINIQUE BERTRAND,MARIE-FRANCOISE DEVAUX
地理学报(英文版) , 1989,
Abstract: Calibrations to predict crude protein (CP) and in vitro dry matter digestibility (IVDMD) in dried grass silage from reflectance data collected at 19 wavelengths on an InfraAlyzer 400R have been developed using stepwise multiple linear (SML) and principal component (PC) regression techniques. A direct comparison of the efficacy of each multivariate technique in this application has been possible by using identical calibration development and evaluation sample sets. The effect of two data transformation steps prior to PC regression was also investigated. PC regression of raw reflectance data yielded no significant improvement in the standard errors of prediction (SEP) for CP and IVDMD over those obtained by SMLR, viz. 0.61 vs 0.63 and 2.9 vs 3.0 respectively. Computation time for development and evaluation of the PC regression equation was less than for selection of the best SMLR equation, and PCR equations may be more robust. Data transformation to reduce granularity effects prior to PCR did not produce any improvement in predictive accuracy for either IVDMD or CP.
Acute Renal Failure and Volume Overload Syndrome Secondary to a Femorofemoral Arteriovenous Fistula Angioplasty in a Kidney Transplant Recipient
Dominique Bertrand,Geoffroy Desbuissons,Nicolas Pallet,Albane Sartorius
Case Reports in Transplantation , 2013, DOI: 10.1155/2013/197524
Abstract:
Ex-vivo detection of neural events using THz BioMEMS
Abdennour Abbas,Thomas Dargent,Dominique Croix,Michel Salzet,Bertrand Bocquet
Physics , 2009,
Abstract: Background: Electromagnetic frequencies up to a few terahertz (THz) can yield real-time and noninvasive measurements on biological matter. Unfortunately, strong absorption in aqueous solutions and low spatial resolution return difficult free-space investigations. A new approach based on integrated THz circuits was used. The authors designed and fabricated a BioMEMS (Biological MicroElectro-Mechanical System) compatible with microfluidic circulation and electromagnetic propagation. It is dedicated to the ex vivo detection of nitric oxide synthase (NOS) activity, which is involved in neurodegenerative phenomena. Material/Methods: The biological model was a leech's central nervous system. After its injury, the production of NO was observed and measured in the far-THz spectral domain. The nerve cord was put inside a BioMEMS realized in polydimethylsiloxane (PDMS) sealed on a glass wafer. Glass is a good material for supporting high-frequency integrated waveguides such as coplanar waveguides (CPWs). Measurements were performed with vectorial network analyser (VNA). Results: The transmission parameter in the frequency range of 0.14-0.22 THz was measured through CPWs located just below the microchannel containing the injured leech nerve cord. The lesion caused a decreased transmission coefficient due to the NOS activity. L-NAME was injected inside the microchannel and it was verified that it inhibits this activity. Conclusions: It was demonstrated that THz spectroscopy can detect a biochemical event, such as NOS activity around an injured leech's nerve cord, in real time. Future studies will be dedicated to quantitative measurements of the reaction products using the sophisticated management of several drugs allowed with microfluidic microsystems.
Dynamic response of isolated Aharonov-Bohm rings coupled to an electromagnetic resonator
Bertrand Reulet,Michel Ramin,Helene Bouchiat,Dominique Mailly
Physics , 1995, DOI: 10.1103/PhysRevLett.75.124
Abstract: We have measured the flux dependence of both real and imaginary conductance of $GaAs/GaAlAs$ isolated mesoscopic rings at 310 MHz. The rings are coupled to a highly sensitive electromagnetic superconducting micro-resonator and lead to a perturbation of the resonance frequency and quality factor. This experiment provides a new tool for the investigation of the conductance of mesoscopic systems without any connection to invasive probes. It can be compared with recent theoretical predictions emphasizing the differences between isolated and connected geometries and the relation between ac conductance and persistent currents. We observe $\Phi_0/2$ periodic oscillations on both components of the magnetoconductance. The oscillations of the imaginary conductance whose sign corresponds to diamagnetism in zero field, are 3 times larger than the Drude conductance $G_0$. The real part of the periodic magnetoconductance is of the order of $0.2 G_0$ and is apparently negative in low field. It is thus notably different from the weak localisation oscillations observed in connected rings, which are much smaller and opposite in sign.
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