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Open Journal of Applied sciences 2022年第7期12卷 1262-1270页

作者： Abdoulaye Zongo Frédéric Ouattara laboratoire de recherche en énergétique et Météorologie de l’Espace (lArEME) Unités de Formations et de Recherches en Sciences et Technologies (UFR-ST) Université Norbert ZONGO Koudougou Burkina Faso

The electrical energy produced must be consumed at the same time, hence the need to achieve a balance between supply and demand. Therefore, the production, transport, and distribution systems together constitute an electricity network. The distribution networks are designed to deliver energy to consumers. Unacceptable voltage drops are observed in the distribution networks of developing countries such as Burkina Faso. A study was carried out on the distribution network of the city of Bobo-Dioulasso in Burkina Faso. It allowed for experimentation with the “Megger MPQ1000” network analyzer to evaluate the quality of the voltage supplied to households. To this end, tests were carried out in a public distribution station and at a few subscribers in the sarfalao district of the city of Bobo-Dioulasso. These tests were used to assess the percentage of voltage drops. These values, which are higher than 8% of the nominal voltage, are not regulatory. The load curves of the consumers in the district were also drawn. Indeed, the period of the high load is between 19:00 and 23:00 local Time (lT), while the period of the medium and low load is between 00:00 and 18:00 lT.

关键词： Experimental Voltage Drop MV/lV Networks Network Analyzer

simulation of arcs for DC relay considering different impacts

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Plasma science and Technology 2020年第2期22卷 19-28页

作者：黄珂瑶孙昊纽春萍吴翔荣命哲闫广超黄广明 state Key laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'an 710049People's Republic of China HUAWEI technologies Co. Ltd.Shenzhen 518129People's Republic of China

recently DC relay has been concerned as a key component in DC power distribution,management and control systems like aircraft,new energy vehicle,IT and communication ***,magnetic force and contact moving speed have great influence on arc behaviours in the breaking *** paper focuses on the numerical investigation of arc during the contact opening process in a real 400V/20 A DC relay product coupling with an inductive load circuit.A 3D air arc model based on the magneto-hydrodynamic theory was built and calculated.A method coupling different computational software was used to take the nonlinear permanent magnet and contact opening process into consideration *** behaviours under different magnetic field and contact opening speed were presented and discussed *** has been found that the increase of the magnetic field is beneficial to the quick build-up of arc length and *** breaking duration becomes shorter with the increase in contact opening speed from 63.5 rad s^-1 to 94.5 rad s^-1,such reduction is less significant with an increase of opening speed from 94.5 rad s^-l to 118.5 rad s^-1.

关键词： DC relay arc motion magnetic field opening speed

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sensory Phenotypic and Molecular Identification of Aromatic rice Accessions Cultivated in Benin

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Advances in Bioscience and Biotechnology 2024年第3期15卷 195-206页

作者： Chimène Nadège Mahoussi Nanoukon Koffi David Montcho Hambada Deless Edmond Fulgence Thiémélé Bignon Meyrix Pamela Franzel loumedjinon Babatoundé Franel Carel Wenceslas Affolabi Amed sèmèvo Havivi Kéllya laurinzo Déguénon Grâce Finagnon Vitoekpon Arielle Bankole lambert Gustave Djedatin laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Bio-technologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Biotechnologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin laboratory of Plant Horticultural and Forestry Sciences National University of Agriculture Kétou Benin Genetics Teaching and research Unit Department of Biochemistry-Genetics Peleforo GON COULIBALY University Korhogo C&#244te d’Ivoire

rice is one of the most widely cultivated cereals in the world, and its aroma is increasingly in demand. With the advancement of research, a major rice flavor gene has been identified on rice chromosome 8. It encodes non-functional betaine aldehyde dehydrogenase leading to the accumulation of 2-acetyl-1-pyrroline which is the major olfactory compound that confers the fragrant character to rice. The aroma of rice is considered a special trait of enormous economic importance that determines the prime price in world trade. To satisfy the needs of the population and reduce rice imports into Benin, we conducted this study to identify aromatic rice accessions grown in Benin. seventy-two rice accessions collected across Benin were PCr amplified with three ssr markers rM 7049, Aro 7, and rM 223, linked to the fgr (fragrance of rice) aroma gene. Molecular analysis revealed that 12 of the 72 accessions, namely Bagou 19, Bagou 22, Tchaka 34, Foun 15, Tchaka 41, Nana 32, Kan 61, Kung 69, Kung 67, Bagou 20, Agbab 101 and Koum 55 possess the fgr gene and can be considered as aromatic rice accessions. A sensory phenotypic test using KOH was carried out on rice accessions carrying fgr gene. Of the twelve positives, only one had the smell of aromatic rice, like the Azucena control. These results show that Benin also has aromatic rice varieties that can be sold on national and international markets.

关键词： Aromatic rice 2-Acetyl-1-Pyrroline ssr Markers Benin

Mass-transfer studies of solid-base catalyst-aided CO_(2) absorption and solid-acid catalyst-aided CO_(2) desorption for CO_(2) capture in a pilot plant using aqueous solutions of MEA and blends of MEA-MDEA and BEA-AMP

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Clean Energy 2019年第4期3卷 263-277页

作者： James Coker Daniel Boafo Afari Jessica Narku-Tetteh raphael Idem Clean Energy technologies research Institute(CETrI) University of Regina3737 Wascana ParkwayReginaSK S4S 0A2Canada

Mass-transfer studies of catalyst-aided CO_(2) absorption and desorption were performed in a full-cycle,bench-scale pilot plant to improve CO_(2) absorption using 5M MEA,5M MEA-2M MDEA and 2M BEA-2M AMP.A solid-base catalyst,K/MgO,and an acid catalyst,HZsM-5,were used to facilitate absorption and desorption,*** and desorption mass-transfer performance was presented in terms of the overall mass-transfer coefficient of the gas side(KGav)and liquid side(K_(l)a_(v)),*** non-catalytic runs,the highest K_(G)a_(V) and K_(l)a_(V) were 0.086 Kmol m^(3).*** and 0.7851 hr for 2M BEA-2M AMP *** results showed 38.7% KGav and 23.6% K_(l)a_(v) increase for 2M BEA-2M AMP with only HZsM-5 catalyst in desorber and a 95% K_(G)a_(V) and 45% K_(l)a_(V) increase for both K/MgO catalyst and HZsM-5 *** was attributed to the role of K/MgO in bonding loosely with CO_(2) and making it available for the amine reaction.

关键词： HZsM-5 K/MgO catalyst CO_(2)removal efficiency CO_(2)capture mass-transfer coefficients of absorber(KGaV)and desorber(K_(l)a_(V))

Design of sediment detention basins: scaled model experiments and application

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International Journal of sediment research 2021年第1期36卷 136-150页

作者： Anita Moldenhauer-roth Guillaume Piton sebastian schwindt Mona Jafarnejad Anton J.schleiss Hydraulic Constructions Platform (Pl-lCH) Swiss Federal Institute of Technology Lausanne (EPFL) Université Grenoble Alpes Institut National de Recherche en Sciences et Technologies Pour L'environnement et L'agriculture (IRSTEA)

sediment detention basins are implemented on mountain rivers to trap solid material that may aggravate the flooding of downstream ***,retention structures built in the past may unnecess.r.l. retain sediment during non-hazardous flood events,resulting in high maintenance costs and sediment deficit *** addition,the so-called spontaneous self-flushing of previously retained sediment during floods has occasionally been *** research suggests to design sediment detention basins for controlling sediment passage with a guiding channel across the deposition area upstream of a hybrid *** barriers consist of a check dam with a slot orifice and an upstream bar screen with a bottom clearance in order to benefit from a combined mechanical-hydraulic retention *** present paper enhances this pioneering research with the help of new experimental data,including a wide range of sediment mixtures and large wood,as well as variable barrier *** design criteria are provided regarding the bar screen and the basin storage *** functionality of the enhanced concept for sediment detention is illustrated by a case study on a physical model:the protection of the Villard-Bonnot village(France) against torrential hazards.

关键词： sediment continuity sediment trap Bedload Open check dam sediment flushing

Biomass gasification,catalytic technologies and energy integration for production of circular methanol:New horizons for industry decarbonisation

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Journal of Environmental sciences 2024年第6期140卷 306-318页

作者： luis F.Bobadilla lola Azancot Miriam González-Castañ Estela ruíz-lópez laura Pastor-Pérez Francisco J.Durán-Olivencia runping Ye Katie Chong Paula HBlanco-sánchez Zenthao Wu Tomás r.reina JoséA.Odriozola Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de sevilla Centro Mixto CSIC-Universidad de SevillaAvda.Américo Vespucio 49Sevilla 41092Spain Departamento de Ingeniería Universidad Loyola AndalucíaAvda.de Las Universidades s/nSevilla 41704Spain Key laboratory of Jiangxi Province for Environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Energy and Bioproducts research Institute(EBrI) Aston UniversityBirminghamB47ETUnited Kingdom Department of Chemical and Process Engineering University of SurreyGuildfordGU27XHUnited Kingdom

The Intergovernmental Panel on Climate Change(IPCC)recognises the pivotal role of renewable energies in the future energy system and the achievement of the zero-emission *** implementation of renewables should provide major opportunities and enable a more secure and decentralised energy supply *** fuels provide long-term solutions for the transport sector,particularly for applications where fuels with high energy density are *** addition,it helps reducing the carbon footprint of these sectors in the *** on biomass characteristics feedstock is essential for scaling-up gasification from the laboratory to *** review deals with the transformation biogenic residues into a valuable bioenergy carrier like biomethanol as the liquid sunshine based on the combination of modified mature technologies such as gasification with other innovative solutions such as membranes and microchannel *** abatement is a critical process in product gas upgrading since tars compromise downstream processes and equipment,for this,membrane technology for upgrading syngas quality is discussed in this *** reactor technology with the design of state-of-the-art multifunctional catalysts provides a path to develop decentralised biomethanol synthesis from biogenic ***,the development of a process chain for the production of(i)methanol as an intermediate energy carrier,(ii)electricity and(iii)heat for decentralised applications based on biomass feedstock flexible gasification,gas upgrading and methanol synthesis is analysed.

关键词： Biogenic residues Gasification Biomethanol Circular Economy Microreactors

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Algebraic Points of Any Degree l with (l ≥ 9) over Q on the Affine Equation Curve C<sub>3sub> (11): y<sup>11sup> = x<sup>3sup>(x-1)<sup>3sup>

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Advances in Pure Mathematics 2022年第9期12卷 519-525页

作者： Boubacar sidy Balde Mohamadou Mor Diogou Diallo Oumar sall Mathematics and Applications laboratory (MAl) U.F.R of Sciences and Technologies Université Assane Seck of Ziguinchor Ziguinchor Senegal

In this work, we use the finiteness of the Mordell-weil group and the riemann roch spaces to give a geometric parametrization of the set of algebraic points of any given degree over the field of rational numbers Q on curve Csub>3 sub>(11): ysup>11sup> = xsup>3sup> (x-1)sup>3sup>. This result is a special case of quotients of Fermat curves Csub>r,s sub>(p) : ysup>psup> = xsup>rsup>(x-1)sup>ssup>, 1 ≤ r, s, r + s ≤ p-1 for p = 11 and r = s = 3. The results obtained extend the work of Gross and rohrlich who determined the set of algebraic points on Csub>1sub>(11)(K) of degree at most 2 on Q.

关键词： Mordell-Weil Group Jacobian Galois Conjugates Algebraic Extensions the Abel-Jacobi Theorem linear systems

Enhancing sensitivity of triple-negative breast cancer to DNA-damaging therapy through chemical inhibition of the m6A methyltransferase METTl3

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Cancer Communications 2024年第2期44卷 282-286页

作者： Bianca Cesaro Alessia Iaiza Fabio Piscopo Marco Tarullo Eleonora Cesari Dante rotili Antonello Mai Alberto Diana Michela londero luca Del Giacco riccardo Masetti Alba Di leone Chiara Naro silvia Masciarelli Giulia Fontemaggi Claudio sette Francesco Fazi Alessandro Fatica Department of Anatomical HistologicalForensic&Orthopedic SciencesSection of Histology&Medical EmbryologySapienza University of RomeRomeItaly Department of Biology and Biotechnologies“Charles Darwin” Sapienza University of RomeRomeItaly GsTeP Organoids research Core Facility Fondazione Policlinico A.Gemelli Istituto di Ricovero e Cura a Carattere Scientifico(IRCCS)RomeItaly Department of Drug Chemistry and technologies Sapienza University of RomeRomeItaly Pasteur Institute Cenci-Bolognetti FoundationSapienza University of RomeRomeItaly Department of Biosciences University of MilanMilanItaly Multidisciplinary Breast Center Dipartimento Scienze della Salute della Donna e del Bambino e di SanitàPubblicaCatholic University of the Sacred HeartRomeItaly Department of Neuroscience Section of Human AnatomyCatholic University of the Sacred HeartRomeItaly Oncogenomic and Epigenetic Unit IRCCS Regina Elena National Cancer InstituteRomeItaly

Dear Editor,N 6-methyladenosine(m^(6)A)is a critical mrNA modi-fication catalyzed by the enzyme methyltransferase-like 3(METTl3),with implications in rNA ***3 upregulation is associated with cancer progres-sion,metast... 详细信息

关键词： cancer methyltransferase metastasis

Functional properties of peptides obtained from whey proteins by ficin extract hydrolysis

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Food Bioscience 2022年第3期47卷 918-927页

作者： Afaf Kheroufi María E.Brassesco Débora A.Campos Halima Boughellout Manuela E.Pintado laboratoire de Génie Agro-alimentaire équipe Génie des Procédés AlimentairesBiodiversité et Agro environnementInstitut de la Nutritionde l’Alimentation et des Technologies Agroalimentaires INATAAUniversité Frères Mentouri Constantine 1BP 325 Route de Ain El BeyConstantineAlgeria CBQF – Centro de Biotecnologia e Química Fina – laboratório Associado Escola Superior de BiotecnologiaUniversidade Católica Portuguesa/PortoRua de Diogo Botelho 13274169-005PortoPortugal

Enzymatic whey proteins concentrates (WPC) hydrolysis under optimal conditions of ficin crude extract (FCE) in two ratios E/s (0.5 and 1%) was studied,assessing the impact of hydrolysis on WPC by determination degree of hydrolysis (DH),Fast proteins liquid chromatography (FPlC),Tricine sDs-PAGE,antioxidant activity at sampling time beside,and technological properties (solubility,emulsifying activity index (EAI) and foaming activity (FA)) at the best condition (maximum DH and antioxidant activity) other *** showed,in the first 30 min,DH reached 22.76% at E/s (1%) with a total degradation of α-lactalbumin (α-la) and almost of β-lactoglobulin (β-lg).A significant increase in antioxidant activity and solubility was observed,while not for EAI,and *** results indicate for the first time that β-lg is susceptible to hydrolyse by FCE that rarely found for other *** hydrolysates showed very relevant performance,and suggest that could be appropriate production of functional ingredients.

关键词： Whey proteins Ficin Hydrolysis Antioxidant solubility

PT-symmetric electronic dimer without gain material

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Communications in Theoretical Physics 2023年第11期75卷 56-65页

作者： senghor Tagouegni Fernande Fotsa-Ngaffo Aurélien Kenfack-Jiotsa laboratory of Mechanics Materials and StructuresDepartment of PhysicsFaculty of ScienceUniversity of Yaounde IPO Box 812YaoundeCameroon Nonlinear Physics and Complex systems Group Department of PhysicsThe Higher Teacher’s Training CollegeUniversity of Yaounde IPO Box 47 YaoundeCameroon Institute of Wood technologies University of Yaounde IPO Box 306MbalmayoCameroon

In this paper,a way of building an electronic Parity Time(PT)-symmetric dimer without gain material is *** is achieved by capacitively coupling a pair of lZC circuits,each combining an inductance l,an imaginary resistance Z and a positive/negative capacitance *** derive the effective Hamiltonian of the system,which commutes with the joint PT *** eigenspectrum displays spontaneous breaking points,where the system undergoes a transition from real to complex *** transition points are imposed by the range value of the coupling thanks to the use of a negative *** charge solutions and energy propagation are also analytically and numerically investigated,and the results are *** the exact phase,these quantities oscillate,whereas in the broken phase,oscillations disappear,giving place to *** results pave the way to innovative PT-symmetric *** could include,among others,optics,metamaterials,photonics and sensitive detection.

关键词： negative capacitance parity-time(PT)symmetry imaginary resistance

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