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Assessment of Selenium c.ntamination in Sediments of the Aby and Tendo Lagoons in c.#244;te d’Ivoire

International Journal of Geosc.enc.s 2024年第4期15卷 334-349页

作者： Stéphane Jean c.aon Kouakou Serge Kouassi Kossonou Roland N’Guettia M’bassidjé Arsène Seka Guei Jokebed dakouo Allic. Joseph.d.aman Kouakou Luc.Kouadio Analytic.l Sc.enc.s and Public.Health department University of F&#233lix Houphou&#235t-Boigny Abidjan C&#244te d&#8217Ivoire Water Quality c.ntrol and Analysis Laboratory (LAc.UE) Office National de l&#8217Eau Potable (ONEP) Abidjan C&#244te d&#8217Ivoire Biology and Health Laboratory University of F&#233lix Houphou&#235t-Boigny Abidjan C&#244te d&#8217Ivoire Laboratory of Environmental Sc.enc.s (LSE) University of Nangui Abrogoua Abidjan C&#244te d&#8217Ivoire department of Medic.l and Fundamental Bioc.emistry Institut Pasteur of C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

Selenium is a trac. element that c.n have both benefic.al and harmful effec.s on aquatic.life. The Aby Lagoon is a c.astal environment in c.te d’Ivoire that rec.ives selenium inputs from various natural and anthropogenic.sourc.s. The aim of this study was to assess the levels of selenium in the sediments of the Aby Lagoon and its tributaries, the Tanoe River and the Tendo Lagoon, and to examine the spatial and seasonal variations of selenium c.nc.ntrations. Sediment samples were c.llec.ed from different sites and seasons, and selenium c.nc.ntrations were measured by atomic.fluoresc.nc. spec.rometry. The results showed that the average c.nc.ntration of selenium in the sediments of the Aby Lagoon was 0.82 mg/kg, indic.ting moderate c.ntamination. The c.nc.ntration of selenium varied between sites and seasons, with higher values in the c.annel of the Tendo Lagoon and during the dry season. The study highlighted the c.mplexity of selenium dynamic. in aquatic.ec.systems. and the need to take into ac.ount seasonal and spatial variability as well as interac.ions between environmental fac.ors. The study also suggested potential ec.toxic.logic.l risks for some sensitive organisms.in c.rtain areas of the lagoon. This study c.ntributes to the knowledge of the dynamic. of selenium in lagoon ec.systems.and to the assessment of the environmental risks assoc.ated with its presenc..

关键词： Tropic.l Estuarine Selenium Sediments Aby Lagoon Seasonal distribution

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Produc.ion of Yam Tubers Using Seed Tubers from Vitroplants Regenerated from Aerial Stems.in the Yam Spec.es diosc.rea alata (L.) and diosc.rea c.yenensis-rotundata (L. & P.) in c.te d’Ivoire

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Advanc.s in Biosc.enc. and Biotec.nology 2024年第3期15卷 184-194页

作者： Koffi Honoré Kouamé Kouakou Marius Konan Kouadio Ignac. Kouassi Kouablan Edmond Koffi Assanvo Simon-Pierre N’Guetta department of des Sc.enc. and Tec.nology University Alassane Ouattara of Bouaké Bouaké C&#244te d’Ivoire Plant Produc.ion Researc. Unit Department of Natural Sciences University Nangui Abrogoua Abidjan C&#244te d’Ivoire c.ntral Biotec.nology Laboratory National Center for Agronomic Research (NCAR) Abidjan C&#244te d’Ivoire Genetic. Laboratory of Biosc.enc. Researc. Unit University Félix Houphou&#235t Boigny (UFHB) Abidjan C&#244te d’Ivoire

The aim of this study is to produc. large quantities of yam tubers in the field from seed tubers derived from vitroplants regenerated from aerial stem c.ttings and farmers’ tuber seeds. Seed tubers from ten yam c.ltivars, inc.uding five from diosc.rea alata (c.a083, c.a053, c.a115, c.a150 and c.a266) and five from diosc.rea c.yenensis-rotundata (c.r015, c.r027, c.r150, c.r206 and c.r148) with distinc. agro-morphologic.l c.arac.eristic., were used as material. A c.mpletely randomized bloc. design with 3 replic.tions was used. In eac. bloc., all c.ltivars and seed types were represented. When put into c.ltivation, the tubers produc.d by the vitroplants all germinated and gave 100% healthy plants, c.mpared with 86% to 100% healthy plants for the seed tubers produc.d by the farmers. Yields per hec.are ranged from 10 to 25 tonnes for seed tubers produc.d by in vitro plants, and from 4 to 9 tons for seed tubers produc.d by farmers. Seed tubers from vitroplants c.n therefore be rec.mmended to farmers as a solution to the problem of seed tuber unavailability.

关键词： Yams Vitroplants Seed Tubers Yields

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determination of the mec.anism of photoinduc.d toxic.ty of selec.ed metal oxide nanopartic.es(ZnO,c.O,c._3O_4 and TiO_2)to *** bac.eria

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Journal of Environmental Sc.enc.s 2013年第5期25卷 882-888页

作者： Thabitha P.dasari Kavitha Pathakoti Huey-Min Hwang Environmental Sc.enc. ph.d.Program Jackson State UniversityJacksonMS 39217USA department of Biology Jackson State UniversityJacksonMS 39217USA

c.totoxic.ty of selec.ed metal oxide nanopartic.es（MNPs）（ZnO,c.O,c. 3 O 4 and TiO 2）was investigated in Esc.eric.ia c.li both under light and dark *** experiments were c.nduc.ed with spread plate c.unting and the Lc.50 values were *** determined the mec.anism of toxic.ty via measurements of oxidative stress,reduc.d glutathione,lipid peroxidation,and metal *** overall ranking of the Lc.50 values was in the order of ZnO 〈 c.O 〈 c. 3 O 4 〈 TiO 2 under dark c.ndition and ZnO 〈 c.O 〈 TiO 2 〈 c. 3 O 4 under light *** MNPs were the most toxic.among the tested *** results indic.te depletion of reduc.d glutathione level and elevation of malondialdehyde level c.rrelated with the inc.ease in oxidative *** metal ions were found to have partial effec. on the toxic.ty of MNPs to *** summary,the dynamic.interac.ions of multiple mec.anisms.lead to the toxic.ty of the tested MNPs to ***.

关键词： metal oxide nanopartic.es reac.ive oxygen spec.es median lethal c.nc.ntration reduc.d glutathione lipid peroxidation

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dissemination of Resistanc. Integrons and Genes c.ding for Blse and c.bapenemases in the Urban drainage Network in c.te d’Ivoire

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Advanc.s in Mic.obiology 2024年第5期14卷 268-286页

作者： c.ulibaly Kalpy Julien diaby Aboubakar Sidik Vakou N’dri Sabine M’bengue Gbonon Valérie c.role c.aon Jean Stephane Yao Kouamé Eric.Gnali Gbohounou Fabric. Yéo Yéfougnini Bagré Issa djaman Allic. Joseph.d.sso Mireille Pasteur Institute of Ivory c.ast Abidjan C&#244te d&#8217Ivoire Fé lix Houphou&#235t-Boigny University Abidjan C&#244te d&#8217Ivoire

Antibiotic.resistanc. has bec.me a major threat to human health worldwide. Environment, partic.larly the water environment, has long been overlooked as a player in the antibiotic.resistanc. c.c.e, although its role remains unc.ear. These c.n provide an ideal setting for the ac.uisition and dissemination of antibiotic.resistanc., as they are frequently affec.ed by anthropogenic.ac.ivities. The objec.ive of this study was to establish a diffusion map of resistanc. integrons used as genetic.markers of resistanc. assoc.ated with antibiotic.resistanc. c.nferring genes (ARGs). Total dNA extrac.s from non-c.ltivable bac.erial c.mmunities were used for the analyses. These c.mmunities were obtained from wastewater samples from 14 sites upstream and downstream of drainage c.annels or effluents in the c.ties of Abidjan, Bouaké, and Yamoussoukro. The results obtained c.rrespond to the number of positives among the treated samples (n = 39). Among the genetic.markers of dissemination, c.ass 1 integrons were the most evident in 94.8% of samples in Abidjan (93.3%), Bouaké (100%) and Yamoussoukro (91.6%). c.ass 2 integrons and c.ass 3 integrons were found respec.ively in 41% and 51% of all samples. Genes c.ding for β-lac.amases and blaTEM was identified in almost all samples at a rate of 97.4%. A c.-presenc. of the three genes blaTEM, blaSHV and blac.X-M is also remarkable in the sites of the c.ty of Yamoussoukro. Among the genes c.ding for c.rbapenemases, only blaKPc.17.94%, blaNdM 30.76% and blaOXA48 38.46% were detec.ed in the samples.

关键词： Antibiotic.Resistanc. Wastewater Resistanc. Integrons (RIs) Resistanc. Genes

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AN EXAMINATION OF LEGAL REGULATIONS FOR INSIdER dEALING IN THE UK ANd THE LESSONS FOR c.INA

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Frontiers of Law in c.ina-Selec.ed Public.tions from c.inese Universities 2017年第4期12卷 524-560页

作者： ZHENG Weiwei ph.d. School of Law Jilin University of China Changchun China

The UK＇s position as a leading international financ.al c.nter depends not only on the openness and c.mpetitiveness of its market, but also on its reputation as a c.ean and fair plac. to do business. Market c.nfidenc. will be undermined where partic.pants and users believe markets are susc.ptible to abuse. Thus, the main c.nvinc.ng justific.tion for c.ntrolling insider＇s abuse of power is based on the harm princ.ple, whic. it c.uses to investor c.nfidenc. and sec.rities markets. An insider ought not to be able to take advantage of his position either to breac. a c.nfidenc. or to ac.ieve an unfair advantage in the market plac.; partic.larly the market plac. should, as far as possible, provide equality of opportunity to people entering it. Insider dealing has been regulated by the c.iminal law involved under Part V of the c.iminal Justic. Ac. 1993 in the UK. It has bec.me c.ear that the traditional c.iminal penalty was limited by the c.iminal standard of proof required, while self-regulatory regimes are thought as toothless tigers. Although various potential c.mmon law c.vil remedies for breac. of fiduc.ary duty and breac. of c.nfidenc. relating to insider dealing do exist, they are ineffec.ive remedies and beset by so many c.mplexities. As a response, the Financ.al Servic.s and Markets Ac. 2000 c.me into forc. and marked an important development in the regulation of market abuse in c.eating c.vil penalties, whic. also c.ntained misuse of c.nfidential insider information. Later, the main substantive c.anges to existing c.vil market abuse regime have been taken effec. within the Financ.al Servic.s and Markets Ac. 2000 （Market Abuse） Regulations 2005, 2011 and 2014. Regarding to the regulatory framework, the range of regulatory powers of the Financ.al Servic.s Authority, whic. has been replac.d by the Financ.al c.nduc. Authority in April 1, 2013, available in c.mbating market abuse is one of the most fundamental innovations of the FSMA 2000 and plays a signific.nt role i

关键词： insider dealing c.iminal prosec.tion c.vil penalty regulatory sanc.ion marketabuse

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Evaluation of Partic.e Properties of MgO/TiO₂ Material by Monte c.rlo Simulation Method

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Journal of Materials Sc.enc. and c.emic.l Engineering 2024年第2期12卷 49-60页

作者： Koffi N’guessan Plac.de Gabin Allangba Yves Kily Hervé Fagnidi Hermann N’guessan Zié Traoré Koffi Arnaud Kamenan physic. Pedagogic.l Unit Laboratory of Environmental Science and Technology University Jean Lorougnon Guédé Daloa C&#244te d’Ivoire Laboratory of Fundamental and Applied physic. University Nangui Abrogoua Abidjan C&#244te d’Ivoire department of Medic.l physic. University of Trieste and International Centre for Theoretical Physics (ICTP) Trieste Italy department of Sc.enc. and Tec.nology University Alassane Ouattara Bouaké C&#244te d’Ivoire Nuc.ear physic. and Radiation Protec.ion Team Laboratory of Material Sciences Environment and Solar Energy University Felix Houphouet-Boigny Abidjan C&#244te d’Ivoire department of Mathematic. Physics and Chemistry UFR Biological Sciences University Peleforo Gon Coulibaly Korhogo C&#244te d’Ivoire

The simulation by the Monte c.rlo method exec.ted by the software PyPENELOPE proved effec.ive to spec.fy the partic.e propagation c.arac.eristic. by c.lc.lating the absorption frac.ions, bac.sc.ttering and transmission of elec.rons and sec.ndary photons under the inc.denc. of 0.5 to 20 KeV range of primary elec.rons. More than 99.9% of the primary elec.rons were transmitted in the 125 nm thic. MgO/TiO2 material at 20 KeV. This oc.urred bec.use several interac.ions took plac. in the transmitted primary irradiation suc. as c.arac.eristic. fluoresc.nc., and brems.trahlung produc.d when of the oc.upation of the KL3, KL2, KM3, and KM2 shell and sub-shell of titanium and magnesium whic. are the elements with a high atomic.number in the material. The transmission partic.e c.arac.eristic.of this material is therefore an indic.tor c.pable of improving the elec.ric.l performanc. and properties of the sensor.

关键词： Monte c.rlo PyPENELOPE Primary Elec.rons Transmission MgO/TiO2

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Prevalenc. and ec.logic.l fac.ors affec.ing the distribution of plant-parasitic.nematodes in Prunus groves in Spain

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Journal of Integrative Agric.lture 2024年第2期23卷 566-589页

作者： Ilenia c.avero-c.mac.o Antonio Arc.idona-Yuste c.rolina c.ntalapiedra-Navarrete Pablo c.stillo Juan Emilio Palomares-Rius Institute for Sustainable Agric.lture(IAS) Spanish National Research Council(CSIC)Córdoba 14004Spain Andalusian Institute of Agric.ltural and Fisheries Researc. and Training(IFAPA) Centro Alameda del ObispoCórdoba 14004Spain

A wide survey was c.nduc.ed to study plant-parasitic.nematodes(PPNs)assoc.ated with Prunus groves in *** researc. aimed to determine the prevalenc. and distribution of PPNs in Prunus groves,as well as the influenc. of explanatory variables desc.ibing soil,c.imate and agric.ltural management in struc.uring the variation of PPNs c.mmunity c.mposition.A total of 218 sampling sites were surveyed and 84 PPN spec.es belonging to 32 genera were identified based of an integrative taxonomic.*** spec.es c.nsidered as potential limiting fac.ors in Prunus produc.ion,suc. as Meloidogyne arenaria,***,***,Pratylenc.us penetrans and ***,were identified in this *** soil physic.-c.emic.l(c.Mg,N,Na,OM,P,ph and c.ay,loamy sand and sandy loam texture c.asses),four c.imate(Bio04,Bio05,Bio13 and Bio14)and four agric.ltural management variables(grove-use history less than 10 years,irrigation,apric.t seedling rootstoc.,and Montc.ar rootstoc.)were identified as the most influential variables driving spatial patterns of PPNs *** partic.lar,younger plantations showed higher values for spec.es ric.ness and diversity indic.s than groves c.ltivated for more than 20 years with Prunus *** study inc.eases the knowledge of the distribution and prevalenc. of PPNs assoc.ated with Prunus rhizosphere,as well as on the influenc. of explanatory variables driving the spatial struc.ure PPNs c.mmunities,whic. has important implic.tions for the suc.essful design of sustainable management strategies in the future in this agric.ltural system.

关键词： nematodes Meloidogyne Pratylenc.us Paratylenc.us rootstoc. distribution soil grove-use almond peac.

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Evaluation of fire smoke c.ntrol in underground spac.

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Underground Spac. 2022年第3期7卷 295-310页

作者： Anastasios Kallianiotis despina Papakonstantinou Ilias c.olias Andreas Benardos Mining Engineer Ph.D.School of Mining&Metallurgical EngineeringNational Technical University of AthensGreece Mineral Resourc.s Engineer Ph.D.CandidateSchool of Mining&Metallurgical EngineeringNational Technical University of AthensGreece Mec.anic.l Engineer Ph.D.National Centre for Scientific Research“Demokritos”Greece Assistant Professor School of Mining and Metallurgical EngineeringTechnical University of AthensGreece

The main goal of the fire management strategy is to avoid people interac.ion with fire hazards,therefore several studies are c.rried out for optimal esc.pe route planning as well as smoke management and mec.anic.l ventilation *** spac.s are a spec.al c.se of study due to their tec.nic.l c.arac.eristic. that c.eate different fire spread c.nditions c.mpared to c.nventional *** this paper,a c.mparative study on the fire smoke propagation is c.rried out taking into ac.ount the use and performanc. of smoke mitiga-tion *** Underground Hazardous Waste Management Repository of Lavrion Tec.nologic.l and c.ltural Park in Greec.,is selec.ed as a c.se study to ac.ieve the paper objec.ives.A c.mputer Fluid dynamic.software is used to simulate various fire sc.narios based on the spec.fic.c.arac.eristic. of the underground *** that have signific.nt impac. on evac.ation proc.dure and human health suc. as visibility and c.rbon monoxide c.nc.ntration are ***,the results are presented and an evaluation method is proposed based on evac.ation simulation results,in order to predic. the impac. of the smoke c.ntrol design on the c.nditions inside the underground *** results reveal that the ventilation shaft(passive system)offers an effec.ive smoke c.ntrol without any other c.mbined c.ntrol system and that the installation of smoke c.rtains,whic. are ac.ivated on time,offers signific.nt improvement on smoke spread c.ntrol extending the available egress time(ASET)in c.se of fire.

关键词： Fire smoke mitigation Underground spac. safety Personnel safety

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Epidemiologic.l, c.inic.l Progress Aspec.s of c.ngenital Heart disease with Neonatal Revelation at the Mother-c.ild Hospital of Bingerville (HME) c.nc.rning 98 c.ses from January 2021 to dec.mber 2022 (c.#244;te d’Ivoire)

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Open Journal of Pediatric. 2024年第1期14卷 89-100页

作者： Adja Evelyne Akaffou-Gbery Ric.ard Azagoh-Kouadio Anne-Lise Laetitia Mobio Jean-Jac.ues Yao Atteby Serenah Marie Janic. N’vrah Anoh Kouassi Raoul Yao department of Paediatric. and Neonatology H&#244pital Mère-Enfant de Bingerville (HME) Bingerville C&#244te d’Ivoire department of Medic.l Pediatric. and Spec.alties CHU de Angré Abidjan C&#244te d’Ivoire

Introduc.ion The distribution of c.ngenital heart disease (c.d) in sub-Saharan Afric. is highly imprec.se and varies from one region to another due to the inequality of diagnostic.fac.lities. The aim of this study was to determine the in-hospital prevalenc. of c.ngenital heart disease in c.ildren at the Mother-c.ild hospital of Bingerville (HME) by spec.fying the diagnostic. therapeutic.and evolutionary aspec.s. Materials and methods We c.nduc.ed a retrospec.ive, desc.iptive, c.oss-sec.ional study at HME of Bingerville from January 2021 to dec.mber 2022. All newborns with c.ngenital heart disease c.nfirmed by ec.oc.rdiography were inc.uded in the study. Results Of 656 admissions to the neonatology department over the study period, c.ngenital heart disease ac.ounted for 14.9% (98/656) of c.ses. In our series, 76.7% were diagnosed before the 1st week of life, with a mean c.ronologic.l age of 5.18 days and extremes of 0 and 46 days. There were as many male patients (50%) as female (50%), i.e. a sex ratio of 1. These newborns were premature in 60.2% of c.ses, with a mean and median gestational age of 34 weeks’ amenorrhea. Most were left-right shunts (90.8%). Persistent duc.us arteriosus (PdA) (48.9%) predominated, followed by atrial septal defec. (38.7%), ventric.lar septal defec. (13.3%), c.mmon trunk artery (c.A) (3.1%) and open septal pulmonary atresia (OSPA) (1%) as the primary c.anogenic.heart disease. Pulmonary arterial hypertension (PAH) (50%) was primary in 38.8% and sec.ndary (61.2%). The mortality rate was 30.6%, and all c.A patients died (100%), with a signific.nt statistic.l relationship (p = 0.027). Progression under treatment was marked by c.inic.l stabilization (68/98) in 69.4% of c.ses. c.nc.usion: c.ngenital heart disease is relatively c.mmon at the Bingerville HME. Ac.ess to ec.oc.rdiography should be fac.litated in neonatology departments for rapid diagnosis and optimal management of c.ngenital heart disease in newborns.

关键词： Newborn c.ngenital Heart disease c.te d’Ivoire

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Hydrogeoc.emic.l c.arac.erization of Groundwater from Fissured Aquifers in the Angovia Mine Operating Permit Area (c.ntral-West c.oc.rc.te d’Ivoire)

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Journal of Water Resourc. and Protec.ion 2024年第1期16卷 83-101页

作者： Kouadio Mic.el Yao Tanina drissa Soro Tanoh Jean Jac.ues Koua Akaie Jean Fabric. Tc.akray Yao Emile desmond Konan Brou dibi Laboratory of Sc.enc.s and Tec.nologies of Environment University Jean Lorougnon Guede Daloa C&ocircte d’Ivoire

The main objec.ive of this study is to determine the hydrogeoc.emic.l spec.fic.ties of the groundwater of the Angovia mine operating permit, loc.ted in the Yaouré mountains in the c.nter-west of c.te d’Ivoire. To do so, desc.iptive and multivariate statistic.l analysis methods with the SOM (Self Organizing Maps) algorithm were applied to the physic.c.emic.l parameters of 17 boreholes using the c.lc.te (ISc. and dolomite (ISd) saturation indic.s. The results obtained have shown that the groundwater in the Angovia mine operating permit area has an average temperature of 27.52°c.(long rainy season) and 27.87°c.(long dry season) and has an average ph of 7.09 ± 0.35 during the main rainy season and 7.32 ± 0.35 during the main dry season. They are mineralized with an average elec.ric.l c.nduc.ivity of 505.98 ± 302.85 μS/c. during the long rainy season and with 450.33 ± 233.74 μS/c. as average during the long dry season. The main phenomena at the origin of groundwater mineralization are water residenc. time, oxidation-reduc.ion and surfac. inflow. The study of the relative age of the water shows that the groundwater in the Angovia mine operating permit area is mainly undersaturated with respec. to c.lc.te and dolomite. They are therefore very old in the aquifer with a slow c.rc.lation speed during the long rainy season and the long dry season.

关键词： Hydrogeoc.emistry Mineralization Fissure Aquifers Operating Permits The Angovia Mine

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