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Evaluation of the excopula ejaculatory potentials of Bersama engleriana in spinal male rats

Asian Journal of Andrology 2009年第5期11卷 533-539,I0001页

作者： pierre Watcho[喀麦隆] Miguel Carro-Juarez[喀麦隆] Animal Physiology and Phytopharmacology Laboratory University of Dschang Dschang P.O. BOX 67 Cameroon Laboratorio de Comportamiento Reproductivo Escuela de Medicina Veterinaria y Zootecnia Universidad Aut6noma deTlaxcala Tlaxcala C.P. 90000 M~xico

The aim of this study was to investigate the effects of Bersama engleriana and its potential mechanism on fictive ejaculation in spinal male rats. The electromyographic activities of the bulbospongiosus muscles were recorded in spinal cord transected and urethane-anesthetized rats treated intravenously with aqueous （100 mg kg^-1） and methanolic （100 mg kg^-1） extracts from the dried leaves of B. engleriana in the absence and presence of dopamine （0.1 μmol kg^-1） or oxytocin （0.5 UI kg^-1）. Mechanical stimulations of the urethra were also carried out 5 min after the sequential treatments. A single intravenous administration of aqueous （100 mg kg^-1） and methanolic （100 mg kg^-1） extracts of B. engleriana did not activate fictive ejaculation. The electromyography recorded after the application of the plant extract was similar to that obtained after intravenous saline injection （200 Gl min^-1） with no contraction of the bulbospongiosus muscles. Dopamine （0.1 μmol kg^-1） and oxytocin （0.5 UI kg^-1） induced rapid rhythmic contractions （P 〈 0.001） of the bulbospongiosus muscles accompanied by penile erection and sometimes with expulsion of the seminal plugs. Pretreatment of rats with the two plant extracts completely abolished the occurrence of ejaculation induced by dopamine （0.1 μmol kg^-1） and oxytocin （0.5 UI kg^-1）. Mechanical stimulation of the urethra carried out 5 min after the sequential treatments always induced penile movements and erections. The inhibitory effect of B. engleriana extracts on the expression offictive ejaculation in spinal male rat is mediated through dopaminergic and oxytocinergic pathways. This prolonged ejaculatory latency caused by B. engleriana could support its potential use in patients with rapid ejaculation.

关键词： Bersama engleriana dopamine ejaculation inhibition oxytocin spinal rat

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Anomaly Detection in Textured Images with a Convolutional Neural Network for Quality Control of Micrometric Woven Meshes

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Fluid Dynamics & Materials Processing 2022年第6期18卷 1639-1648页

作者： pierre-Frédéric Villard Maureen Boudart Ioana Ilea Fabien pierre Universitéde Lorraine CNRS Inria LORIA Nancy54000France IUT de Saint-DiéUniversitéde Lorraine Saint-Dié-des-Vosges88100France Technical University of Cluj-Napoca Cluj-Napoca400114Romania

Industrial woven meshes are composed of metal materials and are often used in construction,industrial and residential activities or *** objective of this work is defect detection in industrial fabrics in the quality control *** order to overcome the limitations of manual methods,which are often tedious and time-consuming,we propose a strategy that can automatically detect defects in micrometric steel meshes by means of a Convolutional Neural *** database used for such a purpose comes from real problem data for anomaly detection in micrometric woven *** detection is performed through supervised classification with a Convolutional Neural Network using a VGG19 *** define a pipeline and a strategy to tackle the related small amount of *** includes i)augmenting the database with translation,rotation and symmetry,ii)using pre-trained weights and iii)checking the learning curve behaviour through *** obtained results show that,despite the small size of our databases,detection accuracy of 96%was reached.

关键词： Industrial fabrics defects detection deep learning convolutional neural network VGG19

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Effect of AlN intermediate layer on growing GaN film by hydride vapor phase epitaxy

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Rare Metals 2006年第z2期25卷 15-19页

作者： NOUET Gérard2 RUTERANA pierre Laboratoire Structures des Interfaces et Fonctionnalité des Couches Minces UMR CNRS 6176 ENSICAEN6 Boulevard du Maréchal Juin 14050 Caen Cedex France

Thick GaN layer deposited by hydride vapor phase epitaxy (HVPE) on a metalorganic chemical vapor deposition (MOCVD) GaN template with a thin low temperature (LT) AlN intermediate layer was investigated. High resolution X-ray resolution diffraction (HRXRD) shows that the crystalline quality of thick GaN layer was improved compared with the template. As confirmed by atomic force microscopy (AFM) observations, the surface morphology of AlN intermediate layer helps to improve the nucleation of GaN epilayer. Photoluminescence (PL) spectra measurement shows its high optical quality and low compressive stress, and micro Raman measurement confirms the latter result. Thus, the deposition of the LT-AlN interlayer has promoted the growth of an HVPE-GaN layer with an excellent crystalline quality.

关键词： GaN AlN intermediate layer HVPE HRXRD AFM photoluminescence

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Combination of Tsoft and ET34-ANA-V80 software for the preprocessing and analysis of tide gauge data in French Polynesia

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Geodesy and Geodynamics 2023年第1期14卷 26-34页

作者： Bernard Ducarme Jean-pierre Barriot Fangzhao Zhang Catholic University of Louvain Georges Lemaître Centre for Earth and Climate Research(ELI)1348 Louvain-la-NeuveBelgium Geodesy Observatory of Tahiti University of French Polynesia(UPF)PunaauiaFrench Polynesia College of Geodesy and Geomatics Shandong University of Science and TechnologyQingdao 266590China

Since 2008 a network of five sea-level monitoring stations was progressively installed in French *** stations are autonomous and data,collected at a sampling rate of 1 or 2 min,are not only recorded locally,but also transferred in real time by a radio-link to the NOAA through the GOES *** new ET34-ANA-V80 version of ETERNA,initially developed for Earth Tides analysis,is now able to analyze ocean tides *** a two-step validation scheme,we took advantage of the flexibility of this new version,operated in conjunction with the preprocessing facilities of the Tsoft software,to recover co rrected data series able to model sea-level variations after elimination of the ocean tides *** performed the tidal analysis of the tide gauge data with the highest possible selectivity(optimal wave grouping)and a maximum of additional terms(shallow water constituents).Our goal was to provide corrected data series and modelled ocean tides signal to compute tide-free sea-level variations as well as tidal prediction models with centimeter *** also present in this study the characteristics of the ocean tides in French Polynesia and preliminary results concerning the non-tidal variations of the sea level concerning the tide gauge setting.

关键词： Tide gauges Tidal data processing Mean sea level

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Pure forsterite in Nyiragongo lavas: evidence for subsolidus oxidation of volcanic rocks

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Acta Geochimica 2022年第1期41卷 12-23页

作者： Innocent Badriyo Agama Gilles Chazot pierre Kamgang Departement Des Sciences de la Terre Faculte Des SciencesUniversitede YaoundeIB.P.812YaoundeCameroon Laboratoire Geosciences Ocean Institut Universitaire Europe´en de la MerUniversitede Brest(UBO)UMR 6538Place Copernic29280 PlouzaneFrance Observatoire Volcanologique de Goma B.P.484GomaNord-KivuDemocratic Republic of the Congo

Some volcanic rocks from Nyiragongo volcano in the Democratic Republic of Congo contain highly oxidized olivine *** olivines crystals are made of two phases,dark olivine on backscattered electron images of pure forsterite composition and grey Mg-poor areas made of olivine and iron-rich *** of the initial composition confirms that they are primary olivine with late separation of two different olivine *** forsterite is enriched in SiO_(2) but contains lower amounts of CaO than Fe-rich areas,in agreement with expected partitioning of these elements related to the composition of the ***-rich oxides formed around or inside the olivine crystals during the separation process and confirm a highly oxidized environment during their *** propose that this separation occurred during subsolidus recrystallization under high fO_(2) conditions of the olivine crystals after cooling of the volcanic *** provides evidences for circulation of iron-rich fluids or gas inducing deuteritic processes occurring in the large volcanic cone of the Nyiragongo,in relation with the presence of a shallow magma chamber connected to a large and permanent lava lake.

关键词： Nyiragongo Olivine Forsterite Oxidation

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Investigation of the hydrogen adsorbed density inside the pores of MOF-5 from path integral grand canonical Monte Carlo at supercritical and subcritical temperature

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Science Bulletin 2016年第8期61卷 594-600页

作者： David Durette pierre Benard Renju Zacharia Richard Chahine Hydrogen Research Institute Universite du Quebec a Trois-RivibresTrois-Rivieres G9A 5H7Canada Gas Processing Center College of EngineeringQatar UniversityDohaQatar

We examine the high density limit of the adsorption isotherms of hydrogen on MOF-5. The isotherms are calculated using quantum GCMC simulations over the pressure range： 0-150 atm （1 atm = 1.01325 ~ 105 Pa） in the subcritical and supercritical state at 30, 50, 77, 113, 196 and 296 K. The fluid phase density in the pores for each temper- ature is calculated and shown to reach values higher than normal liquid density. The fluid phase density obtained at 30 K is observed to correspond to a highly compressed liquid. The radial distribution function of the adsorbed phase at 30 and 50 K are calculated. The adsorption isotherms are compared with available experimental data at 30, 50, 77 and 298 K.

关键词： Hydrogen adsorption isotherms MOF-5 Metal-organic frameworks Path integralgrand canonical Monte Carlo Radial distributionfunction . Hydrogen storage Hydrogen energyapplications

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Fabrication of electrically contacted plasmonic Schottky nanoantennas on silicon

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Chinese Optics Letters 2018年第5期16卷 27-32页

作者： Mohammad Alavirad Anthony Olivieri Langis Roy pierre Berini Department of Electronics Carleton University Centre for Research in Photonics University of Ottawa Department of Electrical Computer and Software EngineeringUniversity of Ontario Institute of Technology School of Electrical Engineering and Computer Science University of Ottawa Department of Physics University of Ottawa

We fabricate Schottky contact photodetectors based on electrically contacted Au nanoantennas on p-Si for the plasmonic detection of sub-bandgap photons in the optical communications wavelength range. Based on a physical model for the internal photoemission of hot carriers, photons coupled onto the Au nanoantennas excite resonant plasmons, which decay into energetic ＂hot＂ holes emitted over the Schottky barrier at the Au/p-Si interface, resulting in a photocurrent. In our device, the active Schottky area consists of Au/p-Si contact and is very small, whereas the probing pad for external electrical interconnection is larger but consists of Au/Ti/p-Si contact having a comparatively higher Schottky barrier, thus producing negligible photo and dark *** describe fabrication that involves an electron-beam lithography step overlaid with photolithography. This highly compact component is very promising for applications in high-density Si photonics.

关键词： Si Ti Fabrication of electrically contacted plasmonic Schottky nanoantennas on silicon

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Analogy between adsorption and sorption： An elementary mechanistic approach. I. Monolayer adsorption and sorption without solvent cluster formation

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Chinese Journal of Chemical Engineering 2017年第12期25卷 1740-1749页

作者： pierre Schaetzel Sébastien Thomas Hasna Louahlia Gualous Laboratoire Universitaire des Sciences Appliquées de Cherbourg Université de Caen IUT de Caen Boulevard Marechal Juin 14032 Caen cedex France Institut de chimie et procédés pour l'énergie l'environnement et la santé Université de Strasbourg 25 rue Becquerel 67087 Strasbourg cedex 2 France

The elementary mechanistic model of adsorption and sorption is based on a simple hypothesis： the adsorption sites are uniformly distnbuted on the surface of the pore walls in the adsorbent, the sorption sites are uniformly distributed in the volume of the polymer. In this first paper we will analyze the simple case where one solute molecule is only allowed to occupy a single adsorption or sorption site. A common elementary occupation law of the free sites is assumed： the differential increase of the number of the adsorbed/sorbed molecules is proportional to the differential increase of the activity of the solute and the concentration of the free （non-occupied） sites in the solid. The proportionality coefficient is called affinity coefficient depending on the solid/solute couple and on the temperature and independent of the concentration of the solute. In adsorption the concentration of the free sites is a surface concentration on the pore walls and in sorption it is expressed by the molarity. The simple monolayer adsorption law of Jovanovic is obtained： n = no（1 - e KP） where n is the number of moles adsorbed when the pressure is P. no is the total number of adsorption sites and K the affinity coefficient for adsorption. The sorption law writes： a = 1/k [Ф/1-Ф] ＋ 1-r/k In [1 ＋ 1/r Ф/1-Ф] where Ф, r and k hold respectively for the volume fraction of the solvent in the polymer, for the ratio of the molar volumes of the solvent to the elementary polymer chain containing one single adsorption site and for the sorption affinity coefficient. The confrontation of these equations to experimental isotherms is satisfactory in comparison with the classical Langmuir and Flory-Huggins equations： the best results are obtained for adsorption of vapors on a 5A zeolite and for all analyzed sorption results.

关键词： Adsorption isotherms Sorption isotherms Flory-Huggins theory Langmuir equation

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Ozone pollution threatens bird populations to collapse:an imminent ecological threat?

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Journal of Forestry Research 2023年第6期34卷 1653-1656页

作者： Evgenios Agathokleous pierre Sicard Zhaozhong Feng Elena Paoletti School of Applied Meteorology Nanjing University of Information Science&Technology(NUIST)Nanjing 210044People’s Republic of China ARGANS Sophia AntipolisFrance IRET-CNR Via Madonna del Piano 1050019 Sesto FiorentinoItaly

While bird populations are declining,the factors associated with this decline are *** on laboratory experiments,air pollution has long been recognized as a factor causing oxidative stress and adversely aff ecting bird ***,studies employing an epidemiological approach have reported signifi cant declines in avian populations in Central Europe and the United States due to air pollution,and ozone in *** advocate that urgent actions are needed to mitigate these eff ects,which threaten biodiversity and environmental health,and propose a series of measures which can enlighten the path toward mitigating air pollution eff ects on avian populations.

关键词： Air pollution Biosecurity Bird population Biodiversity Ornithology Ozone risk

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Developing Project Duration Models in Software Engineering

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Journal of Computer Science & Technology 2007年第3期22卷 348-357页

作者： pierre Bourque Serge Oligny Alain Abran Bertrand Fournier cole de Technologie Supérieure Montréal QuébecCanada Bell Canada Montréal QuébecCanada Université du Québec à Montréal Montréal QuébecCanada

Based on the empirical analysis of data contained in the International Software Benchmarking Standards Group （ISBSG） repository, this paper presents software engineering project duration models based on project effort. Duration models are built for the entire dataset and for subsets of projects developed for personal computer, mid-range and mainframe platforms. Duration models are also constructed for projects requiring fewer than 400 person-hours of effort and for projects requiring more than 400 person-hours of effort. The usefulness of adding the maximum number of assigned resources as a second independent variable to explain duration is also analyzed. The opportunity to build duration models directly from project functional size in function points is investigated as well.

关键词： international software benchmarking standards group (ISBSG) project duration models project scheduling models schedule and organizational issues software engineering time estimation

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