检索结果-南通市图书馆

Multidrug-Resistant of Escherichia coli and Salmonella spp. Strains in Chicken Feces Intended for Consumption in Open Spaces of Ouagadougou, Burkina Faso

在线全文

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2024年第4期14卷 881-892页

作者： Stéphanie Lynseh Carine Sita Bénao Dabiré Amana Métuor Abdoul Karim Ouattara Rahimatou Yasmine Wendkouni Tiemtoré Nicolas Ouédraogo Blandine Ouédraogo Rhaina Olivia Badini Lionel Eliada benoit Bambara Serge Sougué Jacques Simporé Biomolecular and Genetic Laboratory (LABIOGENE) Pietro Annigoni Biomolecular Research Center (CERBA) Department of Biochemistry-Microbiology University Joseph Ki-Zerbo Ouagadougou Burkina Faso department of Biochemistry-Microbiology University of D&#233dougou D&#233dougou Burkina Faso National Malaria Research and Training Centre (CNRFP) Ouagadougou Burkina Faso

Resistant bacteria can be transmitted to humans through feces or contaminated meat from local chickens. Bacterial strains were isolated from the intestinal contents of 400 local chicken samples from various sales sites. These strains were then characterized using bacteriological and biochemical methods to identify resistant strains. In a study conducted in Ouagadougou, we systematically collected chicken fecal samples from 20 locations across the city, followed by isolation and identification of Salmonella spp. using specific enrichment and culture methods, as well as Escherichia coli. Bacterial strains were characterized using antibiotic resistance profiles were determined through agar diffusion tests, revealing sensitivity or resistance to a range of antibiotics based on established scientific criteria. The results showed that out of the 400 samples collected, 81.25% and 63.5% were contaminated by Escherichia coli and Salmonella spp., respectively. Among these, 86.15% of identified Escherichia coli and 50.78% of Salmonella spp. displayed resistance to at least one tested antibiotic. Among 280 Escherichia coli isolates identified resistant to at least one antibiotic, 31.07% were resistant to cefotaxime (CTX), 20.35% to ceftazidime (CAZ), 21.07% to ceftriaxone (CTR), 75% to amoxicillin clavulanic acid (AMC), 23.57% aztreoname (ATM) and 27.14% were resistant to imipenem (IMP). In the case of the 129 Salmonella spp. isolates resistant to at least one tested antibiotic, 34.88% were resistant to CTX;41.08% to CAZ;35.65% to CTR, 92% to AMC, 39.53% to ATM and finally 47.28% were resistant to IMP. Our study revealed high prevalence of resistance in bacterial strains isolated from local chickens sold outdoors in Ouagadougou. These findings raise significant public health concerns, due to the possible transmission of these resistant strains to humans through the consumption of contaminated meat, thus complicating the treatment of bacterial infections.

关键词： Multidrug-Resistant Chicken Ouagadougou Escherichia coli Salmonella spp. Antibiotic

Boundary parametrization of planar self-affine tiles with collinear digit set

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Mathematics 2010年第9期53卷 2173-2194页

作者： AKIYAMA Shigeki LORIDANT benoit department of Mathematics Faculty of ScienceNiigata UniversityIkarashi 28050 Niigata9502181Japan

We consider a class of planar self-affine tiles T = M-1 a∈D(T + a) generated by an expanding integral matrix M and a collinear digit set D as follows:M =(0-B 1-A),D = {(00),...,(|B|0-1)}.We give a parametrization S1 →T of the boundary of T with the following standard *** is H¨older continuous and associated with a sequence of simple closed polygonal approximations whose vertices lie on T and have algebraic *** derive a new proof that T is homeomorphic to a disk if and only if 2|A| |B + 2|.

关键词： self-similar tile boundary disk-likeness fractal parametrization

Efficacy and tolerability of chitin-glucan combined with simethicone(GASTRAP^(■)DIRECT)in irritable bowel syndrome:A prospective,open-label,multicenter study

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Pharmacology and Therapeutics 2024年第3期15卷 10-22页

作者： Nathalie Talbodec Pauline Le Roy Peggy Fournier benoit Lesage Elodie Lepoutre François Castex Jean Michel Godchaux Lionel Vandeville Benjamin Bismuth Xavier Lesage Pauline Bayart Michael Genin Christel Rousseaux Veronique Maquet Salvatore Modica Pierre desreumaux Caroline Valibouze department of Gastroenterology Hôpital privéLe BoisLille 59000France department of Gastroenterology Hôpital privéde Villeneuve d’AscqVilleneuve d’Ascq 59650France Univ.Lille CHU LilleULR 2694–METRICSÉvaluation des Technologies de Santéet des Pratiques MédicalesLille 59000France development of Intestinal Biotech 1 Avenue Oscar LambretLille 59045France KitoZyme SA Parc Industriel des hauts Sarts Zone 2Rue de MilmortHerstal 4040Belgium BiOkuris A Parc Industriel des hauts Sarts Zone 2Rue de MilmortHerstal 4040Belgium department of Hepato-Gastroenterology Lille University HospitalLille 59000France U1286-INFINITE Institute for Translational Research in InflammationUniv.LilleInsermCHU LilleLille 59000France department of Digestive Surgery and Transplantation Lille University HospitalLille 59037France

BACKGROUND Irritable bowel syndrome(IBS),defined according to the Rome IV diagnostic criteria,is a chronic functional gastrointestinal disorder characterized by recurrent abdominal pain related to altered bowel ***-line recommended treatments are limited to combining drugs targeting predominant symptoms,particularly pain(antispasmodics),constipation(laxatives),and diarrhea(loperamide),yielding only a limited therapeutic ***^(■)DIRECT is a class IIa medical formulation composed of a combination of chitin-glucan and simethicone indicated for the symptomatic treatment of gas-related gastrointestinal disorders by combining different mechanisms of *** To evaluate the efficacy,tolerability,and safety of 4-week GASTRAP^(■)DIRECT treatment in patients with *** In this prospective,multicenter,open-label trial,120 patients with IBS received three sticks of GASTRAP^(■)DIRECT(1.5 g/d of chitin-glucan and 0.75 mg/d of simethicone)per day for 4 *** primary endpoint was the responder rate,defined as the number of patients whose abdominal pain score decreased by≥30%from baseline to week(W)*** analysis was performed using the per-protocol *** symptoms,impact of global symptoms on daily life,change in stool consistency,and improvement in defecatory disorders were *** Overall,100 patients were *** W4,67%(95%CI:57-75)showed improvement in abdominal pain(score:5.8±2.4 vs 2.9±2.0,Pders],abdominal distension[7.2±2.1 vs 4.4±3.1,Pders],and impact of global symptoms on daily life[7.1±2.0 vs 4.6±2.9,Pders].Stool consistency improved in most patients(90%and 57%for patients with liquid and hard stools,respectively).Overall,42%of patients with defecatory disorders reported very much/considerable improvements by *** severe adverse event occurred,and tolerabil

关键词： Chitin-glucan Irritable bowel syndrome Abdominal pain Flatulence defecatory disorders Stool consistency Natural non-pharmacological treatment

On the Global Regularity for a Wave-Klein–Gordon Coupled System

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2019年第6期35卷 933-986页

作者： Alexandru D.IONESCU benoit PAUSAdeR department of Mathematics Princeton University department of Mathematics Brown University

In this paper we consider a coupled Wave-Klein–Gordon system in 3 D, and prove global regularity and modified scattering for small and smooth initial data with suitable decay at infinity. This system was derived by Wang and LeFloch–Ma as a simplified model for the global nonlinear stability of the Minkowski space-time for self-gravitating massive fields.

关键词： Quasilinear Klein–Gordon equations modified scattering systems of wave and Klein–Gordon equations

Transversal Instability for the Thermodiffusive Reaction-Diffusion System

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2015年第5期36卷 871-882页

作者： Michal KOWALCZYK benoit PERTHAME Nicolas VAUCHELET departamento de Ingenieria Matematica and Centro de Modelamiento Matem'atico(UMI CNRS 2807) Universidad de Chile Sorbonne Universités UPMC Univ Paris 06UMR 7598Laboratoire Jacques-Louis LionsF-75005ParisFrance CNRS UMR 7598Laboratoire Jacques-Louis LionsF-75005ParisFrance INRIA-Paris-Rocquencourt EPC MAMBADomaine de VoluceauBP10578153 Le Chesnay CedexFrance

The propagation of unstable interfaces is at the origin of remarkable patterns that are observed in various areas of science as chemical reactions, phase transitions, and growth of bacterial colonies. Since a scalar equation generates usually stable waves, the simplest mathematical description relies on two-by-two reaction-diffusion systems. The authors' interest is the extension of the Fisher/KPP equation to a two-species reaction which represents reactant concentration and temperature when used for flame propagation,and bacterial population and nutrient concentration when used in *** authors study circumstances in which instabilities can occur and in particular the effect of dimension. It is observed numerically that spherical waves can be unstable depending on the coefficients. A simpler mathematical framework is to study transversal instability, which means a one-dimensional wave propagating in two space ***, explicit analytical formulas give explicitely the range of paramaters for instability.

关键词： Traveling waves Stability analysis Reaction-diffusion equation Thermodiffusive system

Multilayer optics for the EUV and soft X-rays

在线全文

学校读者我要写书评

暂无评论

光学精密工程 2005年第4期13卷 421-429页

作者： Torsten Feigl Sergiy Yulin Nicolas benoit Norbert Kaiser Fraunhofer Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Str. 7 D-07745 Jena Germany

The demand to enhance the optical resolution, to structure and observe ever smaller details, has pushed the way towards the EUV and soft X-rays. Induced mainly by the production of more powerful electronic circuits with the aid of projection lithography, optics developments in recent years can be characterized by the use of electromagnetic radiation with smaller wavelength. The good prospects of the EUV and soft X-rays for next generation lithography systems (λ=13.5 nm), microscopy in the “water window” (λ=2.3～4.4 nm), astronomy (λ=5～31 nm), spectroscopy, plasma diagnostics and EUV/soft X-ray laser research have led to considerable progress in the development of different multilayer optics. Since optical systems in the EUV/soft X-ray spectral region consist of several mirror elements a maximum reflectivity of each multilayer is essential for a high throughput. This paper covers recent results of the enhanced spectral behavior of Mo/Si, Cr/Sc and Sc/Si multilayer optics.

关键词： EUV X射线多层膜光学涂覆技术 Mo/Si Cr/Sc Sc/Si 光电子技术

Analysis of a System describing Proliferative-Quiescent Cell Dynamics

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2018年第2期39卷 345-356页

作者： Jean CLAIRAMBAULT benoit PERTHAME Andrada Quillas MARAN dedicated to Philippe G. Ciarlet on the occasion of his 80th birthda

Systems describing the dynamics of proliferative and quiescent cells are commonly used as computational models, for instance for tumor growth and *** on the very earliest stages of hematopoiesis, stem cells and early progenitors, the authors introduce a new method, based on an energy/Lyapunov functional to analyze the long time behavior of solutions. Compared to existing works, the method in this paper has the advantage that it can be extended to more complex situations. The authors treat a system with space variable and diffusion, and then adapt the energy functional to models with three equations.

关键词： Stability analysis Lyapunov functional Energy method Parabolic sys-tems Proliferative and quiescent cells Tumor growth Hematopoiesis

Nanovolcano microelectrode arrays: toward long- term on-demand registration of transmembrane action potentials by controlled electroporation

在线全文

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2020年第1期6卷 578-589页

作者： benoit X.E.desbiolles Etienne de Coulon Nicolas Maino Arnaud Bertsch Stephan Rohr Philippe Renaud Laboratory of Microsystems LMIS4 Ecole Polytechnique Federale de LausanneLausanneSwitzerland department of Physiology Laboratory of Cellular Optics IIUniversity of BernBernSwitzerland

Volcano-shaped microelectrodes(nanovolcanoes)functionalized with nanopatterned self-assembled monolayers have recently been demonstrated to report cardiomyocyte action potentials after gaining spontaneous intracellular *** nanovolcanoes exhibit recording characteristics similar to those of state-of-the-art micro-nanoelectrode arrays that use electroporation as an insertion *** this study,we investigated whether the use of electroporation improves the performance of nanovolcano arrays in terms of action potential amplitudes,recording durations,and *** with neonatal rat cardiomyocyte monolayers grown on nanovolcano arrays demonstrated that electroporation pulses with characteristics derived from analytical models increased the efficiency of nanovolcano recordings,as they enabled multiple on-demand registration of intracellular action potentials with amplitudes as high as 62 mV and parallel recordings in up to~76%of the available *** performance of nanovolcanoes showed no dependence on the presence of functionalized nanopatterns,indicating that the tip geometry itself is instrumental for establishing a tight seal at the cell–electrode interface,which ultimately determines the quality of ***,the use of electroporation permitted the recording of attenuated cardiomyocyte action potentials during consecutive days at identical sites,indicating that nanovolcano recordings are nondestructive and permit long-term on-demand recordings from excitable cardiac *** from demonstrating that less complex manufacturing processes can be used for next-generation nanovolcano arrays,the finding that the devices are suitable for performing on-demand recordings of electrical activity from multiple sites of excitable cardiac tissues over extended periods of time opens the possibility of using the devices not only in basic research but also in the context of comprehensive drug testing.

关键词： arrays recording action

Dirac Concentrations in a Chemostat Model of Adaptive Evolution(In honor of the immense scientific influence of Ham Brezis)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2017年第2期38卷 513-538页

作者： Alexander LORZ benoit PERTHAME Cécile TAING Sorbonne Universits UPMC Univ Paris 06InriaLaboratoire Jacques-Louis Lions UM R CNRS 7598F75005 ParisFrance

This paper deals with a non-local parabolic equation of Lotka-Volterra type that describes the evolution of phenotypically structured populations. Nonlinearities appear in these systems to model interactions and competition phenomena leading to selection. In this paper, the equation on the structured population is coupled with a differential equation on the nutrient concentration that changes as the total population *** methods aimed at showing the convergence of the solutions to a moving Dirac mass are reviewed. Using either weak or strong regularity assumptions, the authors study the concentration of the solution. To this end, BV estimates in time on appropriate quantities are stated, and a constrained Hamilton-Jacobi equation to identify where the solutions concentrates as Dirac masses is derived.

关键词： Adaptive evolution, Asymptotic behaviour, Chemostat, Dirac concentrations,Hamilton-Jacobi equations, Lotka-Volterra equations, Viscosity solutions