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Plasma synthesis of various polymorphs of tungsten trioxide nanoparticles using gliding electric discharge in humid air:characterization and photocatalytic properties

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Plasma Science and Technology 2023年第12期25卷 72-82页

作者： Romaric L SEUTCHA Georges KAmGANG-YOUBI Elie ACAYANKA Valeria VERmILE François DEVRED eric m GAIGNEAUX Samuel LAmINSI Inorganic Chemistry Department Faculty of SciencesUniversity of Yaounde INgoa-Ekelle 812YaoundéCameroon Institute of Condensed matter and Nanosciences(ImCN) Molecular ChemistryMaterials and CatalysisUniversitéCatholique de LouvainPlace Louis Pasteur 11348 Louvain-la-NeuveBelgium

A gliding electric arc(glidarc)discharge generates a low-temperature plasma at atmospheric *** the discharge occurs in humid air as the feed gas,the chemistry of a glidarc plasma consists of in situ formation of HO°and NO°as the primary chemical *** trioxide(WO_(3))nanoparticles were successfully prepared by exposure of a liquid precursor to glidarc *** WO_(3)samples were calcined at three different temperatures(300℃,500℃and 800℃),resulting in different pure polymorphs:γ-WO_(3)(at 300℃),β-WO_(3)(at 500℃)andα-WO_(3)(at 800℃)according to x-ray diffraction *** identification of WO_(3)compounds was also confirmed by attenuated total reflection Fourier transform infrared spectroscopy *** in the calcination temperature of WO_(3)induced a decrease in its specific surface area according to Brunauer–Emmett–Teller nitrogen physisorption *** UV-visible results showed that the absorption bands of plasma-WO_(3)samples were more intense than those of WO_(3)samples obtained by a precipitation route,a classical method used for ***,this parameter can improve the photocatalytic properties of WO_(3)under visible *** photodegradation(in sunlight conditions)of gentian violet,chosen as a model pollutant,confirmed the photocatalytic properties of plasma-WO_(3)*** novel synthesis method has great potential to improve the efficiency of advanced tungsten trioxide-based functional material preparation,as well as in pollution-reducing and energy-saving tungsten extractive metallurgy.

关键词： plasma glidarc tungsten trioxide plasma-synthesis nanoparticles photocatalyst

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Resolving SSm/I-Ship Radar Rainfall Discrepancies from AIP-3

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Advances in Atmospheric Sciences 2005年第6期22卷 903-914页

作者： Song YANG eric A. SmITH School of Computational Sciences George Mason University Fairfax VA USA NASA/Goddard Space Flight Center Greenbelt MD USA

The third algorithm intercomparison project （AIP-3） involved rain estimates from more than 50 satellite rainfall algorithms and ground radar measurements within the Intensive Flux Array （IFA） over the equatorial western Pacific warm pool region during the Tropical Ocean Global Atmosphere coupled Ocean-Atmosphere Response Experiment （TOGA COARE）. Early results indicated that there was a sys- tematic bias between rainrates from satellite passive microwave and ground radar measurements. The mean rainrate from radar measurements is about 50% underestimated compared to that from passive microwave-based retrieval algorithms. This paper is designed to analyze rain patterns from the Florida State University rain retrieval algorithm and radar measurements to understand physically the rain discrep- ancies. Results show that there is a clear range-dependent bias associated with the radar measurements. However, this range-dependent systematical bias is almost eliminated with the corrected radar rainrates. Results suggest that the effects from radar attenuation correction, calibration and beam filling are the major sources of rain discrepancies. This study demonstrates that rain retrievals based on satellite mea- surements from passive microwave radiometers such as the Special Sensor of microwave Imager （SSm/I） are reliable, while rain estimates from ground radar measurements are correctable.

关键词： rainfall SSm/I radar satellite microwave measurements

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Understanding important features of deep learning models for segmentation of high-resolution transmission electron microscopy images

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npj Computational materials 2020年第1期6卷 765-773页

作者： James P.Horwath Dmitri N.Zakharov Rémi mégret eric A.Stach Department of materials Science and Engineering University of PennsylvaniaPhiladelphiaPAUSA Center for Functional Nanomaterials Brookhaven National LaboratoryUptonNYUSA Department of Computer Science University of Puerto RicoRío PiedrasSan JuanPRUSA

Cutting edge deep learning techniques allow for image segmentation with great speed and ***,application to problems in materials science is often difficult since these complex models may have difficultly learning meaningful image features that would enable extension to new *** situ electron microscopy provides a clear platform for utilizing automated image *** this work,we consider the case of studying coarsening dynamics in supported nanoparticles,which is important for understanding,for example,the degradation of industrial *** systematically studying dataset preparation,neural network architecture,and accuracy evaluation,we describe important considerations in applying deep learning to physical applications,where generalizable and convincing models are *** a focus on unique challenges that arise in high-resolution images,we propose methods for optimizing performance of image segmentation using convolutional neural networks,critically examining the application of complex deep learning models in favor of motivating intentional process design.

关键词： neural networks image

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Genetics provides new individualized therapeutic targets for Parkinson’s disease

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Neural Regeneration Research 2021年第5期16卷 994-995页

作者： eric Joshua Garcia Ellen Sidransky medical Genetics Branch National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA

The identification of genes increasing one’s risk of developing common,complex disorders like Parkinson’s disease(PD)can provide novel therapeutic opportunities.A prime example of this are the consequences of mutations in GBA1,the gene responsible for the lysosomal storage disorder Gaucher disease(GD).GD is a multi-system disorder,primarily affecting tissues of the reticuloendothelial system.A subset of patients with GD also have neuronopathic manifestations(types 2 and 3 GD).

关键词： therapeutic consequences primarily

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Application of new void detection algorithm for analysis of feed pressure and rotation pressure of roof bolters

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International Journal of mining Science and Technology 2017年第1期27卷 77-81页

作者： Liu Wenpeng Jamal Rostami eric Keller Department of Energy and mineral Engineering The Pennsylvania State UniversityState CollegePA 16802USA Earth mechanics Institute Department of Mining EngineeringColorado School of MineGoldenCO 80401USA Electro-mechanical Systems Laboratory The Pennsylvania State UniversityState CollegePA 16802USA

Roof and rib instability is an important issue in underground mining. To optimize ground support design,enhance ground stability, and reduce the possibility of roof or rib failure with minimal use of artificial ground support, it is essential to have an accurate understanding of ground conditions. This includes the location of voids, cracks, and discontinuities, as well as information about the different strata in the immediate roof. This paper briefly introduces ongoing research on void detection by using the roof bolter feed and rotation pressure. The goal of this project is to improve the sensitivity of detection programs to locate smaller joints and reduce the number of false alarms. This paper presents a brief review of the testing procedures, data analysis, logic, and algorithms used for void detection. In addition, this paper discusses the results of preliminary laboratory tests and statistical analysis of the data from these two drilling parameters used for void detection.

关键词： Roof bolter Void detection Feed pressure Rotation pressure CUSUm algorithm Ground support optimization

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Advantages of QWIP technology in infrared thermal cameras

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应用光学 2017年第2期38卷 298-303页

作者： eric Belhaire Regis Pichon Thales Optronique SAS 2 avenue Gay-Lussac Elaneourt 78995 France

Standard GaAs/AlGaAs quantum well infrared photodetectors(QWIP)have been seriously considered as atechnological choice for the 3^(rd) generation of thermal imagers in the long wave infrared band(LWIR)for some *** technology like mCT(HgCdTe)was the technology choice of the 2^(nd) generation because of its high quantum *** the paper,measurements on the QWIP technology will be presented and a comparison with alternative technology will be done.

关键词： infrared detectors image sensors quantum well infrared photodetectors(QWIP)

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The functional equations of Langlands Eisenstein series for SL(n,Z)

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Science China mathematics 2023年第12期66卷 2731-2748页

作者： Dorian Goldfeld eric Stade michael Woodbury Department of mathematics Columbia UniversityNew YorkNY 10027USA Department of mathematics University of Colorado BoulderBoulderColorado 80309USA Department of mathematics RutgersThe State University of New JerseyPiscatawayNJ 08854-8019USA

In this paper,we present a very simple explicit description of Langlands Eisenstein series for SL(n,Z).The functional equations of these Eisenstein series are heuristically derived from the functional equations of certain divisor sums and certain Whittaker functions that appear in the Fourier coefficients of the Eisenstein *** conjecture that the functional equations are unique up to a real affine transformation of the s variables defining the Eisenstein series and prove the uniqueness conjecture in certain cases.

关键词： Langlands Eisenstein series functional equations automorphic forms general linear group

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Recurrent hepatitis C virus after transplant and the importance of plasma cells on biopsy

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World Journal of Gastroenterology 2013年第2期19卷 158-160页

作者： eric R Kallwitz Section of Hepatology Loyola University Medical CenterMaywoodIL 60153United States

Hepatitis C virus(HCV) is the leading indication for liver transplantation in the United *** recurs universally after transplant but the rate of fibrosis and the development of graft failure is *** donor and recipient features have been demonstrated to impact *** cell hepatitis,a histologic finding,is one feature associated with poor graft and patient *** pathogenic mechanism resulting in plasma cell hepatitis is poorly understood,with evidence suggesting a role for both the HCV and the immune system.A recent publication described plasma cell hepatitis in a larger context of immune medicated graft dysfunction in transplant recipients receiving interferon based *** manuscript will highlight the topic of plasma cell hepatitis and provide commentary on the lack of recognition,the data regarding pathophysiologic mechanisms and the potential management options.

关键词： Hepatitis C virus Plasma cells Biopsy Sustained virological response

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Combining infrared and mode synthesizing atomic force microscopy： Application to the study of lipid vesicles inside Streptomyces bacteria

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Nano Research 2016年第6期9卷 1674-1681页

作者： Pauline Vitry Rolando Rebois eric Bourillot Ariane Deniset-Besseau marie-Joelle Virolle~ eric Lesniewska Alexandre Dazzi ICB UmR CNRS 6303 University ofBourgogne Franche Comte 21078 Dijon France LCP UmR CNRS 8000 University Paris-Sud 91405 Orsay France 12BC UmR CNRS 9198 University Paris-Sud 91190 Gif-Sur-Yvette France

We propose a new analytical approach combining vibrational spectroscopy and acoustic tomography for the detection and characterization of vesicles inside Streptomyces bacteria. Using atomic force microscopy and infrared spectroscopy （AFm-IR）, we detect the presence of triglyceride vesicles. Their sizes in depth are measured with high accuracy using mode synthesizing atomic force microscopy （mS-AFm）. We conducted a comparative study of AFm-IR and mS-AFm, and highlighted the advantages of the coupling of these techniques in having a full characterization （chemical, topographical, and volumetric） of a biological sample. With these complementary techniques, a complete access to the vesicle size distribution has been achieved with an accuracy of less than 50 nm. A 3D reconstruction of bacteria showing the in-depth distribution of vesicles is given to underline the great potential of the acoustic method.

关键词： nanoscale suDsurtace imaging atomic force microscop~ acoustic microscopy infrared microscopy biology

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A TWO-GRID mETHOD FOR THE C^0 INTERIOR PENALTY DISCRETIZATION OF THE mONGE-AmPERE EQUATION

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Journal of Computational mathematics 2020年第4期38卷 547-564页

作者： Gerard Awanou Hengguang Li eric malitz Department of mathematics Statisticsand Computer ScienceM/C 249.University of Illinois at ChicagoChicagoIL 60607USA Department of mathematics Wayne State University656 W.KirbyDetroitMI 48202USA Department of mathematics DePaul UniversityChicagoIL 60614USA

The purpose of this paper is to analyze an efficient method for the solution of the nonlinear system resulting from the discretization of the elliptic monge-Ampere equation by a C0 interior penalty method with Lagrange finite *** consider the two-grid method for nonlinear equations which consists in solving the discrete nonlinear system on a coarse mesh and using that solution as initial guess for one iteration of Newton’s method on a finer *** both steps are *** give quasi-optimal W1,1 error estimates for the discretization and estimate the difference between the interior penalty solution and the two-grid numerical *** experiments confirm the computational efficiency of the approach compared to Newton’s method on the fine mesh.

关键词： Two-grid discretization Interior penalty method Finite element monge-Ampere

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