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Narrowband PLC Channel Workbench to Emulate Transmission in Smart Grid

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Journal of Control Science and Engineering 2016年第2期4卷 51-60页

作者： Ismail Aouichak Anouar Achouri jean-charles le bunetel Yves Raingeaud Research Group on Materials Microelectronics and Acoustic Nanotechnology University of Tours Tours 37200 France

A real-time workbench able to reproduce the same behavior as an indoor network is in order. Such a tool will help researchers and industrials extend the smart grid technology indoors and have a better acknowledgment of Smart Grid systems interoperability. In order to develop such a tool many approaches should be studied to choose the most suitable one by comparing the models and the technologies. The considered hardware are the embedded systems and the selected approach is the statistical one. It appears that the FlR filter is the most pertinent approach.

关键词： Embedded systems, emulator power line transfer function modeling FIR (finite impulse response) filters, narrowbandPLC (power line communication).

Electromagnetic Coupling Modeling of Microstrip Lines Used in Switching Power Supplies

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Journal of Control Science and Engineering 2013年第1期1卷 55-59页

作者： Nassima Tidjani jean-charles le bunetel Ali Ouchar Yves Raingeaud LTSS (Laboratory of Telecommunication Signals and System) University of Amar Telidji Laghouat 03000 Algeria GREMAN (Research Group on Materials Microelectronics and Acoustics Nanotechnology) University of Tours Tours 37200 France

One of the major problems in electromagnetic compatibility is the interference due to erosstalk on the PCB （printed circuit board） in the SiP （system-in-package） technology. In this work, electromagnetic coupling modeling of coupled microstrip lines used in switching power supplies is presented. The different blocks which are connected through buses realized on PCBs will be considered as a coupled transmission line. The coupled microstrip transmission lines are modeled by a mathematical model based on the MoM （method of moments）. This model is done by Maflab routines. A SPICE （simulation program with integrated circuit emphasis） model is proposed for the prediction of the NEXT （near^crosstalk） and the FEXT （far-crosstalk） at the terminals of the command line. This command line is often victim of electromagnetic interference emitted by a transmission line source close. Some solutions against crosstalk depending on the physical parameters of the coupled transmission lines are proposed.

关键词： Crosstalk PCB SiP microstrip NEXT FEXT.

Characterization and Modeling Home Power Grid Topologies in PLC Broadband

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Journal of Control Science and Engineering 2014年第2期2卷 70-79页

作者： Richard Nizigiyimana Annuar Achouri jean-charles le bunetel Yves Raingeaud Philippe Ravier Guy Lamarque GREMAN (Research Group on Materials Mieroelectronics and Acoustics Nanotechnology) University of Tours Tours 37200France

Home power outlets can be connected in various topologies： derivation, star, cascade. This paper firstly describes the intrinsic behavior of the transfer function of these basic topologies. Secondly, the channel capacities of the three topologies are compared to check if there is a more favorable topology. Many deterministic modeling methods have been developed to compute the transfer function of power line networks but the given examples in the studies correspond only to the derivation topology with branches connected to the direct path between transceivers. Thirdly, this paper evaluates the ability of common modeling methods （multipath and chain matrices） to compute accurately the transfer function of any topology. Modeling the derivation topology with ＂secondary＂ branches and the star topology is shown to be inappropriate with chain matrices based method. Indeed, this method is very sensitive to the uncertainty of the second parameters of the power cables and this induces considerable fading shifts for those topologies. Multipath modeling method produces results agreeing with measurements for any topology.

关键词： Power sockets topologies power line channel capacity multipath model chain matrices model.

NRF2 signaling cascade in amyotrophic lateral sclerosis:bridging the gap between promise and reality

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Neural Regeneration Research 2024年第5期19卷 1006-1012页

作者： Pauline Tarot Christelle Lasbleiz jean-charles Liévens MMDN Univ MontpellierEPHEINSERMMontpellierFrance CNRS ParisFranceEPHEINSERMMontpellierFrance

Amyotrophic lateral sclerosis is a very disabling disease due to the degeneration of motor *** include muscle weakness and atrophy,spasticity,and progressive ***,there is no treatment to reverse damage to motor neurons and cure amyotrophic lateral *** only two treatments actually approved,riluzole and edaravone,have shown mitigated beneficial *** difficulty to find a cure lies in the complexity and multifaceted pattern of amyotrophic lateral sclerosis *** mechanisms,abnormal RNA metabolism,nucleocytoplasmic transport defects,accumulation of unfolded protein,and mitochondrial dysfunction would in fine induce oxidative damage and vice versa.A potent therapeutic strategy will be to find molecules that break this vicious *** the nuclear factor erythroid-2 related factor 2 signaling may fulfill this objective since nuclear factor erythroid-2 related factor 2 has a multitarget profile controlling antioxidant defense,mitochondrial functioning,and *** here discuss the interest of developing nuclear factor erythroid-2 related factor 2-based therapy in regard to the pathophysiological mechanisms and we provide a general overview of the attempted clinical assays in amyotrophic lateral sclerosis.

关键词： amyotrophic lateral sclerosis C9orf72 NRF2 oxidative defense oxidative stress sulforaphane superoxide dismutase 1 TDP43

It’s not all in your feet: Improving penalty kick performance with humanavatar interaction and machine learning

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The Innovation 2024年第2期5卷 115-121页

作者： jean-Luc Bloechle Julien Audiffren Thibaut le Naour Andrea Alli Dylan Simoni Gabriel Wüthrich jean-Pierre Bresciani Control and Perception Laboratory University of FribourgBd Perolles 901700 FribourgSwitzerland Motion-up Le PrismePlace Albert Einstein56000 VannesFrance FC Basel 1893 Birsstrasse 320A4002 BaselSwitzerland

Penalty kicks are increasingly decisive in major international football ***,over 30%of shootout kicks are *** outcome of the kick often relies on the ability of the penalty taker to exploit anticipatory movements of the goalkeeper to redirect the kick toward the open side of the ***,this ability is difficult to train using classical *** used an augmented reality simulator displaying an holographic goalkeeper to test and train penalty kick performance with 13 young elite *** learning algorithms were used to optimize the learning rate by maintaining an optimal level of training *** training sessions of 20 kicks reduced the redirection threshold by 120 ms,which constituted a 28%reduction with respect to the baseline ***,redirection threshold reduction was observed for all trained players,and all things being equal,it corresponded to an estimated 35%improvement of the success rate.

关键词： kick penalty learning

Origin and diversification of maize: Two teosintes but different contributions

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Molecular Plant 2024年第2期17卷 233-235页

作者： Jonathan Acosta-Bayona Gloria leon-Martinez jean-Philippe Vielle-Calzada Grupo de Desarrollo Reproductivo y Apomixis UGA Laboratorio Nacional de Genomica para la BiodiversidadCinvestav IrapuatoIrapuato Gto CP36825Mexico

The unique topographic,climatic,and latitudinal heterogeneity of Mesoamerica is crucial to understanding the evolutionary emergence of one of the richest cultural and biological regions in the planet and its impact on food *** divided between two regions of large biodiversity-lowland tropical or coastal zones and temperate or subtropical highlands sculpted by parallel sierras and their central plateau-the Mexican territory harbors more than 2000 endemic monocotyledonous species,including several hundred grasses(Poaceae),particularly those belonging to the genus Zea,composed of maize(Zea mays ***)and its wild relatives,collectively referred as teosintes.

关键词： collective planet harbor

Uncovering the Challenges of Faecal Sludge Management in Benin’s Urban Hubs: The Cases of Abomey-Calavi and Natitingou

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Journal of Environmental Protection 2024年第7期15卷 767-780页

作者： Nikita Topanou Blaise Agbatchi Gouvidé jean Gbaguidi Jacques Fatombi Fidèle Paul Tchobo Kaba Laboratory of Chemical Research and Application (LaKReCA) Department of Chemistry Faculty of Science and Technology of Natitingou University of Abomey Natitingou Bnin Laboratory of Study and Research in Applied Chemistry Polytechnic School of Abomey-Calavi University of Abomey-Calavi (LERCA/EPAC/UAC) Cotonou Bnin

The issue of faecal sludge management in developing countries remains a significant challenge due to the indiscriminate discharge of sludge into the environment. This practice generates more environmental problems than it solves. This study aims to assess the management of household faecal sludge in the communes of Abomey-Calavi and Natitingou, Benin, in order to optimise the best storage conditions for subsequent more effective treatment. To this end, a sociological survey was conducted among households in Abomey-Calavi and Natitingou, as well as among manual emptiers. The results of our studies revealed that two types of latrines are used in households. 20.55% of households use traditional latrines, while 59.83% use ordinary latrines. 7.97% of households use both types of latrine. Moreover, the depth of the latrines varies from 2.5 m to 7 m in Abomey-Calavi and from 2.5 m to 8 m in Natitingou. Among households with a latrine, 28.26% empty their pit at least once, while 71.74% have never emptied it. The emptying cost varies between 35,000 FCFA and 90,000 FCFA. The mixing of faecal sludge with solid waste, including plastic materials, makes emptying difficult due to the obstruction of the vacuum pump. The results obtained will serve as a reliable database to facilitate decision-making in the context of faecal sludge management.

关键词： Management Faecal Sludge Valorization Benin

Rainfall Dynamics and Landslides in Urban Areas of Gabon: The Case of Libreville-Est (Gabon)

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Journal of Geoscience and Environment Protection 2024年第8期12卷 239-264页

作者： Jospin lewis Backita Moussounda André Géraud le Brun Bivegue-Bivegue Fern Lièle Mboumbou Makanga jean Damien Maloba Makanga Department of Environmental and Marine Geographic Sciences Faculty of Arts and Humanities Omar Bongo University Laboratory of Spatial Analysis and Tropical Environments Libreville Gabon

Due to its abundant rainfall, the city of Libreville, which concentrates more than half of Gabon’s population, is frequently confronted with the impacts of natural disasters such as floods and landslides. This study attempts to identify the complex relationships between the dynamics of land use and the role of rainfall in the occurrence of landslides. On the one hand, it uses statistics on landslides compiled from information taken from general news bulletins and, on the other, daily rainfall data obtained from the National Meteorological Department. The study revealed that the Libreville East sector, dominated by Mount Nkol Ogoum, one of Libreville’s most prominent landforms, is affected by a land-use dynamic in which human settlement has been progressing for some thirty years, to the detriment of the original vegetation which, among other things, helped to stabilise the soil on the hillsides and the marshy areas at the foot of the slopes. The result is not only an uncontrolled occupation of the land, but also a major landslide every two years in this part of the city, causing significant loss of life and property. However, an analysis of the time series shows little rainfall variability, marked in particular by a predominance of negative anomalies, and the occurrence of a few exceptional daily rainfall peaks. Similarly, the period from 20 October to 20 November, which receives the most rainfall, also appears to be the most conducive to landslides.

关键词： Libreville Land Use Rainfall Natural Hazards Landslide

Phytochemical Screening, Study of Acute Toxicity and Hypoglycemic and Antihyperglycemic Activities of Silver Nanoparticles from Guibourtia tessmannii (Harms) J. leonard (Caesalpiniaceae)

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Open Journal of Applied Sciences 2024年第1期14卷 118-130页

作者： Ngoulé charles Christian Eya’ane Meva François Sone Enone Bertin Ngo Nyobe Biwole Caroline Tankeu Séverin Elisée Songue Pascal Nguene jean Pierre Etame-Loe Gisèle Department of Pharmaceutical Sciences Faculty of Medicine and Pharmaceutical Sciences University of Douala Douala Cameroon Department of Biology of Plant Organisms Faculty of Sciences University of Douala Douala Cameroon

According to the World Health Organization, diabetes affects approximately 347 million people worldwide. Its management is not within the reach of all social classes, therefore medicinal plants are still the first resort for many populations in Africa. The biological material used in this study was the trunk bark of Guibourtia tessmannii. 50 g of trunk bark powder were decocted in 500 ml of distilled water for 5 minutes were carried out. The method used for the synthesis of silver nanoparticles (AgNps) was an organometallic bio-reduction of silver nitrate salts mediated by various secondary metabolites contained in the plant extract. The study of the toxicity acute was conducted according to guideline 423 of the OECD protocol. The pharmacological activities were each carried out with 28 female rats divided into 7 groups of four rats. It was a question for the hypoglycemic activity of administering various doses of silver nanoparticles and other substances to the rats thirty minutes after the carbohydrate intake and for the anti-hyperglycemic activity of administering the same substances to the rats thirty minutes before the carbohydrate intake. The extraction yield was 8.76%. Only the alkaloid test was negative. After acute toxicity study, the LD50 was greater than 2000 mg/kg. Blood sugar tests revealed that glibenclamide 5 mg/kg, which is the reference molecule, lowered blood sugar more than the other treatments applied in the other batches. It was followed by treatment with silver nanoparticles at a dose of 400 μg/kg in both tests. It was therefore concluded that silver nanoparticles from G. tessmannii are good for the formulation of improved traditional medicines and bring up their afficacity .

关键词： Guibourtia tessmannii Nanoparticles Hypoglycemia Anti-Hyperglycemia