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Journal of Environmental Protection 2019年第11期10卷 1436-1449页

作者： Nafiou Egbéola Chitou Waris Kéwouyémi Chouti jacques kouazounde Daouda Mama Laboratoire de Chimie Inorganique et de l’Environnement Faculté des Sciences et Techniques (FAST) Université d’Abomey-Calavi Cotonou Bénin Laboratoire d’Hydrologie Appliquée Faculté des Sciences et Techniques (FAST) Université d’Abomey-Calavi Cotonou Bénin

The Alibori Basin, with an area of 13,400 km2, is a tributary of the Niger River in Benin. It is a river that passes through the potentially agricultural area of Benin. The waters of the river are useful for wildlife and are used for various purposes (drinking water, laundry, domestic activities). They regularly receive the discharges and drainage of the residues of the chemical fertilizers and pesticides not used by crops during the cultivation of the river and watershed bank. This study aims to assess the impact of the agricultural inputs on the quality of the waters from Alibori river on the basis of its physico-chemical characteristics and concentrations in Trace Metal Elements such as Zn, Pb, Cd and Cu. Seven (7) sites were selected along the river. Concentrations of , , , ?, Cu2+ and Zn2+ were measured using a spectrophotometer DR 1800 and that of Pb and Cd by Metalyse. The Metal Trace Elements were measured in the Alibori river sediments after being treated and mineralized using aqua regia. The results revealed that Alibori river characteristics varied with seasons and its waters and sediments were polluted by metals, phosphates and nitrites. The pollution of waters of the Alibori River was due to the intensive use of the chemical fertilizers and pesticides for agricultural purposes.

关键词： Alibori River Fertilizers Pesticides

How everything started:A retrospective

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Geoscience Frontiers 2014年第5期5卷 627-634页

作者： jacques Touret Institut de Mineralogie.de Physique des Materiaux.et de Cosmochimie IMPMC).Sorbonne Universites-UPMC Univ Paris 06 UMR CNRS 7590 Museum National d'Histoire Naturelle.IRD UMR 206.4 Place Jussieu F-75005 Paris France

Recalling some of the most important events and persons during his education and career, the author sketches his growth from a young engineer, educated in the sanctuary of solid state reactions, to an involved fully devoted scientific career for the study of fluids in the deep Earth. Most important in this respect was the discovery of C02 inclusions in granulites, which triggered years of discussion on fluid- absent or fluid-assisted granulite metamorphism. To some extent, this debate is a continuation of the former granite controversy, but it shows also how the famous battle of ＂soaks against pontiffs＂ could have been easily avoided.

关键词： Granite controversyMetamorphic petrologyFluid inclusionsJ TouretGranulites

Wavelet filter analysis of splitting and coupling of seismic normal modes below 1.5 mHz with superconducting gravimeter records after the December 26, 2004 Sumatra earthquake

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Science China Earth Sciences 2006年第12期49卷 1259-1269页

作者： jacques Hinderer Institut de Physique du Globe de Strasbourg (UMR 7516 CNRS-ULP) 5 rue Descartes 67084 Strasbourg Cedex France

New generation superconducting gravimeters (SGs), which have been demonstrated to be better than the best seismometers STS-1 at frequencies below 1 mHz, can be accepted as the quietest vertical seismometers for observation of long-period earth free oscillations. Wavelet filtering with narrow band-pass frequency response as shown in this paper is very helpful in removing at- mospheric pressure effects from on gravity records in long-period seismic mode frequency bands. The processing of high quality SG records after the great Sumatra earthquake (Dec. 26, 2004) with wavelet filtering leads to clear observations of all coupled toroidal modes below 1.5 mHz except these for 0T5, 0T7 and 1T1; moreover 1T2 and 1T3 are, for the first time, unambiguously revealed in the vertical components of the free oscillations. The three well-resolved splitting singlets of overtones 2S1 are observed from a single SG record for the first time.

关键词： superconducting gravimeter,Sumatra earthquake,wavelet filter,Earth free oscillations,pressure correction.

Assessing human sperm morphology： top models, underdogs or biometrics？

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Asian Journal of Andrology 2010年第1期12卷 36-46页

作者： jacques Auger Service d＇Histologie-Embryologie Biologie de la Reproduction/CECOS Hopital Cochin Paris 75014 France

The assessment of the percentage of spermatozoa having an ＇ideal＇ morphology using so-called strict method is the method recommended in the latest edition of the World Health Organization （WHO） laboratory manual for semen analysis. This recommendation is a result of the statistical association between ＇ideal＇ sperm morphology and fertility, and of the current general belief that sperm morphology assessment should be used primarily as a fertility tool. The notion of an ＇ideal＇ sperm morphology has persisted despite the very low percentage of such spermatozoa in the semen of fertile men, a subject of intense controversy. The detailed categorization of each abnormal spermatozoon has thus, for a long time, been considered optional and partially redundant, an idea which is reflected in the earlier editions of the WHO manual. However, several recent studies have shown the importance of carefully assessing abnormal sperm morphology for use in the diagnosis ＆infertility, to determine fertility prognosis, and for basic or public health studies. One approach, which combines videomicroscopy and computer vision, and is the only approach able to assess the continuum of sperm biometrics, has been used successfully in several recent clinical, basic and toxicology studies. In summary, the visual assessment of detailed sperm morphology--including the categorization of anomalies allowing arithmetically derived indices of teratozoospermia--and the more modern computer-based approaches, although often considered to be redundant, are in fact complementary. The choice of the most appropriate method depends on the field of investigation （clinical, research, toxicology） and the problem being addressed. Each approach has advantages as well as certain limitations, which will be discussed briefly herein.

关键词： diagnosis fertility prognosis image analysis multiple anomalies index pattern recognition reproductive toxicology spermdefects sperm deformity index sperm pathology teratozoospermic index videomicroscopy

A unified plasticity methodology for rate-and temperature-sensitive alloys exhibiting a non-linear kinematic hardening behavior

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Acta Mechanica Solida Sinica 2017年第1期30卷 27-37页

作者： jacques Luk-Cyr Daniel Paquet jacques Lanteigne Henri Champliaud Aurelian Vadean Department of Mechanical Engineering Ecole Polyechnique de Montreal 2900 Blvd Edouard-Montpetit MontrealQC H3T 1J4 Institut de recherche d'Hydro-Quebec 1800 Blvd Lionel-Boulet Varennes QC J3X 1S1 Department of Mechanical Engineering Ecole de technologie superieure 1100 Rue Notre-Dame O Montreal QCH3C 1K3

In this paper, a novel unified plasticity methodology is proposed to allow the coupling of rate-and temperature-sensitivity of engineering alloys as well as the non-linear kinematic hardening behavior often observed during cyclic loading. The proposed methodology is general in the sense that an arbitrary constitutive model may be chosen for the viscoplastic part, as well as the cyclic part. We adapt our model with a physically-motivated viscoplasticity flow rule and a nonlinear kinematic hardening model. In contrast with other unified plasticity models, the simplified theory involves few material parameters that can be readily calibrated from standard mechanical tests. The capabilities of the proposed theory are demonstrated for a hot rolled annealed 304 L stainless steel supplied by Vimetal Peckover. The model is tested with stress–strain curves obtained from standard tensile and cyclic uniaxial tests at various strain amplitudes and strain-rates, and good accuracy of the response is obtained for strains up to 15%, within a temperature range of 293–673 K. We note that the cyclic plasticity model in our adapted theory can be readily enhanced with ratchetting, mean stress relaxation, strain amplitude history, Masing effects or other complex capabilities.

关键词： Unified plasticity Constitutive behavior Viscoplasticity Non-linear kinematic hardening Stainless steels

A Large-Scale Palaeozoic Dextral Ductile Strike-Slip Zone:the Aqqikkudug-Weiya Zone along the Northern Margin of the Central Tianshan Belt,Xinjiang,NW China

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Acta Geologica Sinica(English Edition) 1999年第2期73卷 148-162页

作者： CHARVET jacques Departement des Sciences de la Terre URM6530Universite d'Orleans45067 OrleansFrance

Abstract The nearly E-W-trending Aqqikkudug-Weiya zone, more than 1000 km long and about 30 km wide, is an important segment in the Central Asian tectonic framework. It is distributed along the northern margin of the Central Tianshan belt in Xinjiang, NW China and is composed of mylonitized Early Palaeozoic greywacke, volcanic rocks, ophiolitic blocks as a mélange complex, HP/LT-type bleuschist blocks and mylonitized Neoproterozoic schist, gneiss and orthogneiss. Nearly vertical mylonitic foliation and sub-horizontal stretching lineation define its strike-slip feature; various kinematic indicators, such as asymmetric folds, non-coaxial asymmetric macro- to micro-structures and C-axis fabrics of quartz grains of mylonites, suggest that it is a dextral strike-slip ductile shear zone oriented in a nearly E-W direction characterized by “flower” strusture with thrusting or extruding across the zone toward the two sides and upright folds with gently plunging hinges. The Aqqikkudug-Weiya zone experienced at least two stages of ductile shear tectonic evolution: Early Palaeozoic north vergent thrusting ductile shear and Late Carboniferous-Early Permian strike-slip deformation. The strike-slip ductile shear likely took place during Late Palaeozoic time, dated at 269±5 Ma by the40Ar/39Ar analysis on neo-muscovites. The strike-slip deformation was followed by the Hercynian violent S-type granitic magmatism. Geodynamical analysis suggests that the large-scale dextral strike-slip ductile shearing is likely the result of intracontinental adjustment deformation after the collision of the Siberian continental plate towards the northern margin of the Tarim continental plate during the Late Carboniferous. The Himalayan tectonism locally deformed the zone, marked by final uplift, brittle layer-slip and step-type thrust faults, transcurrent faults and E-W-elongated Mesozoic-Cenozoic basins.

关键词： ductile thrusting dextral strike-slipping kinematic analysis Aqqikkudug-Weiya zone Tianshan Palaeozoic orogenic belt

SYNTHESIS OF CONDUCTIVE POLYANILINE VIA OXIDATION BY MnO_2

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Chinese Journal of Polymer Science 2004年第3期22卷 269-277页

作者：生瑜 Christian Carrotc jacques Guilletc Institute of Materials Science and Engineering East China University of Science and Technology Shanghai 20023 China Laboratoire de Rheologie des Matieres Plastiques FRE CNRS 2396 Universite Jean Monnet 42023 St-Etienne Cedex 2 France

A unique process of chemical oxidation polymerization of aniline using manganese dioxide (MnO2) as the oxidizing agent in an aqueous medium is described. The reaction between aniline and MnO2 follows a mechanism by which the organic monomer is oxidized while the metal oxide undergoes reductive dissolution. The effects of the amount of oxidizing agent and aniline, pH and temperature of the reactive system, type of acid on the yield and conductivity of polyaniline are discussed. The resulting polyaniline was characterized by IR and UV-Vis spectrometry. Polyaniline with a conductivity of 12.5 S/cm was obtained using 0.033 mol of aniline oxidized by 0.023 mol MnO2 in the presence of 100 mL of 2.7 mol/L HCl at 25degreesC for 4 h.

关键词： conducting polymers heteroatom-containing polymers manganese oxide oxidation polymerization polyaniline

SPECTRAL IMAGING AND ANALYSIS TO YIELD TISSUE OPTICAL PROPERTIES

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Journal of Innovative Optical Health Sciences 2009年第2期2卷 123-129页

作者： STEVEN L.jacques Departments of Dermatology and Biomedical Engineering Oregon Health&Science University PortlandOregonUSA

An introduction to the basics of spectral imaging as applied to biological tissues is *** example of a spectral image of a face is used to demonstrate the data and spectral analysis that specify the melanin content(M),blood content(B),tissue oxygen saturation(S),water content(W),fraction of scattering due to Rayleigh scattering(f)and due to Mie scattering(1−f),and the reduced scattering coefficient at 500-nm wavelength(µs 500 nm).The sensitivity of reflectance spectra to variation in the various parameters is illustrated.

关键词： Spectroscopy spectral imaging tissue optical properties optical diagnostics.

FRACTAL NATURE OF LIGHT SCATTERING IN TISSUES

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Journal of Innovative Optical Health Sciences 2011年第1期4卷 1-7页

作者： STEVEN L.jacques Dermatology and Biomedical Engineering Oregon Health and Science University 3303 SW Bond Ave Portland OR97239USA

Light scattering by a tissue has a wavelength dependence that depends on the size distribution of scatterers in the *** measuring the wavelength dependence of scattering,one can deduce changes in the nanoscale architecture of cells and *** report discusses the connection between nanoscale architecture and measurable light *** significance of this work is to develop label-free optical imaging that describes tissue structure,to complement the absorption,fluorescence,and Raman scattering spectra that describe the chemical constituents of a tissue.

关键词： Optical scattering fractal biomedical optics

Polarized Light Microscopy and Spectroscopy of Individual Single-Walled Carbon Nanotubes

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Nano Research 2011年第8期4卷 788-794页

作者： jacques Lefebvre Paul Finnie Institute for Microstructural Sciences National Research Council Ottawa Canada K IA 0R6

Polarized light microscopy （PLM） is used to image individual single-walled carbon nanotubes （SWNTs） suspended in air across a slit opening. The imaging contrast relies on the strong optical anisotropy typical of SWNTs. We combine PLM with a tunable light source to enable hyperspectral excitation spectroscopy and nanotube chirality assignment. Comparison with fluorescence microscopy and spectroscopy confirms the assignment made with PLM. This represents a versatile new approach to imaging SWNTs and related structures.

关键词： Carbon nanotube microscopy luminescence absorption polarization homodyne