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Genetic and Agronomic Parameter estimates of Growth, Yield and Related Traits of Maize (Zea mays L.) under Different Rates of Nitrogen Fertilization

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American Journal of Plant Sciences 2024年第4期15卷 274-291页

作者： Prince emmanuel Norman Lansana Kamara Aloysius Beah Kelvin Sahr Gborie Francess Sia Saquee Sheku Alfred Kanu Fayia Augustine Kassoh Yvonne Sylvia Gloria ethel Norman Abdul Salaam Kargbo Sierra Leone Agricultural Research institute (SLARi) Freetown Sierra Leone School of Agriculture Njala University Njala Campus Njala Sierra Leone School of Natural Resources Management Njala University Njala Campus Njala Sierra Leone Department of Agro Biotechnology Institute of Agriculture RUDN University Moscow Russia Faculty of Development Agriculture & Natural Resources Management Eastern Technical University of Sierra Leone Kenema Sierra Leone

This study evaluated the genetic and agronomic parameter estimates of maize under different nitrogen rates. The trial was established at the Njala Agricultural Research centre experimental site during 2021 and 2022 in a split block design with three maize varieties (iWcD2, 2009eVDT, and DMR-eSR-Yellow) and seven nitrogen (0, 30, 60, 90, 120, 150 and 180 kg∙N∙ha−1) rates. Findings showed that cob diameter and anthesis silking time (ASi) had intermediate heritability, ASi had high genetic advance, ASi and grain yield had high genotypic coefficient of variation (GcV), while traits with high phenotypic coefficient of variation (PcV) were plant height, ASi, grain yield, number of kernel per cob, number of kernel rows, ear length, and ear height. The PcV values were higher than GcV, indicating the influence of the environment in the studied traits. Nitrogen rates and variety significantly (p influenced grain yield production. Mean grain yields and economic parameter estimates increased with increasing nitrogen rates, with the 30 and 180 kg∙N∙ha−1 plots exhibiting the lowest and highest grain yields of 1238 kg∙ha−1 and 2098 kg∙ha−1, respec.i.ely. Variety and nitrogen effects on partial factor productivity (PFPN), agronomic efficiency (AeN), net returns (NR), value cost ratio (VcR) and marginal return (MR) indicated that these parameters were significantly affected (p ese factors. The highest PFPN (41.3 kg grain kg−1∙N) and AeN (29.4 kg grain kg−1∙N) were obtained in the 30 kg∙N∙ha−1 plots, while the highest VcR (2.8) and MR (SLL 1.8 SLL−1 spent on N) were obtained in the 180 kg∙N∙ha−1. The significant influence of variety and nitrogen on traits suggests that increasing yields and maximizing profits require use of appropriate nitrogen fe

关键词： Nitrogen Rates Genetic and Agronomic estimates introduced Genotypes Grain Yield Zea mays

Third-line and rescue therapy for refractory Helicobacter pylori infection: A systematic review

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World Journal of Gastroenterology 2023年第2期29卷 390-409页

作者： Pedro Vieira de Moraes Andrade Yan Mosca Monteiro ethel Zimberg chehter Department of Gastroenterology Faculdade de Medicina do ABCSanto André09060-650SPBrazil

BAcKGROUND Due to increasing resistance rates of Helicobacter pylori(***)to different antibiotics,failures in eradication therapies are becoming more *** though eradication c.i.eria and treatment algorithms for first-line and second-line therapy against *** infection are well-established,there is no clear recommendation for third-line and rescue therapy in refractory *** *** To perform a systematic review evaluating the efficacy and safety of rescue therapies against refractory *** *** A systematic search of available rescue treatments for refractory *** infection was conducted on the National Library of Medicine’s PubMed search platform based on Preferred Reporting items for Systematic Reviews and Meta-Analyses *** or non-randomized clinical trials and observational studies evaluating the effec.i.eness of *** infection rescue therapies were *** Twenty-eight studies were included in the analysis of mean eradication rates as rescue therapy,and 21 of these were selected for analysis of mean eradication rate as third-line *** rifabutin-,sitafloxacin-,levofloxacin-,or metronidazole-based triple-therapy as third-line treatment,mean eradication rates of 81.6%and 84.4%,79.4%and 81.5%,55.7%and 60.6%,and 62.0%and 63.0%were found in intention-to-treat(iTT)and per-protocol(PP)analysis,*** third-line quadruple therapy,mean eradication rates of 69.2%and 72.1%were found for bismuth quadruple therapy(BQT),88.9%and 90.9%for bismuth quadruple therapy,three-in-one,Pylera®(BQT-Pylera),and 61.3%and 64.2%for non-BQT)in iTT and PP analysis,*** rifabutin-,sitafloxacin-,levofloxacin-,or metronidazole-based triple therapy as rescue therapy,mean eradication rates of 75.4%and 78.8%,79.4 and 81.5%,55.7%and 60.6%,and 62.0%and 63.0%were found in iTT and PP analysis,*** quadruple therapy as rescue treatment,mean eradication rates of 76.7%and 79.2%for BQT,

关键词： Helicobacter pylori Refractory infection Third-line therapy Rescue therapy eradication Treatment

Building an interoperable space for smart agriculture

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Digital communications and Networks 2023年第1期9卷 183-193页

作者： ioanna Roussaki Kevin Doolin Antonio Skarmeta George Routis Juan Antonio Lopez-Morales ethel claffey Manuel Mora Juan Antonio Martinez institute of communications and computer Systems AthensGreece Walton institute WaterfordIreland Department of information and communications engineering University of MurciaMurciaSpain School of Business Waterford Institute of TechnologyWaterfordIreland R&D Department Odin SolutionsMurciaSpain

The digital transformation in agriculture introduces new challenges in terms of data,knowledge and technology adoption due to critical interoperability issues,and also challenges regarding the identification of the most suitable data sources to be exploited and the information models that must be ***(Building an interoperable,Data-Driven,innovative and Sustainable european Agri-Food Sector)addresses these challenges by providing an overarching solution that integrates various heterogeneous hardware and software resources(e.g.,devices,networks,platforms)and enables the seamless sharing of data and knowledge throughout the agri-food *** paper introduces the main concepts of DeMeTeR and its reference arc.i.ecture to address the data sharing and interoperability needs of farmers,which is validated via two rounds of 20 large-scale pilots along the DeMeTeR *** paper elaborates on the two pilots carried out in region of Murcia in Spain,which target the arable crops sector and demonstrate the benefits of the deployed DeMeTeR reference arc.i.ecture.

关键词： Smart agriculture internet of things(ioT) DeMeTeR Reference arc.i.ecture interoperability Agricultural information model(AiM) Pilot validation

co-host cities of the Beijing Olympic Games

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china Today 2008年第8期57卷 48-57页

作者： ethel LU

iN August,Hong Kong,Qingdao, Tianjin,Shenyang,Shanghai and Qinhuangdao,as co-host cities of the Beijing Olympic Games, will respec.i.ely host the equestrian, sailing and soccer competitions.

关键词：北京奥运会协办城市香港青岛体育竞赛

Getting Around the capital——Transport in Beijing

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china Today 2008年第8期57卷 14-17页

作者： ethel LU

THe number of motor vehicles in Beijing hit 3.2 million in February this year-almost double the figure of late *** the munici- pal government having spent some RMB 110 billion on improving traf- fic systems since Beijing was announced as the host city for the 2008 Olympics,an average day still sees chronic congestion in the *** August, hundreds of thousands of athletes,coaches,sports officials,media personnel and tourists will flood into Beijing,placing even more pressure on the city and poten- tially creating a major headache for residents as well as the government. Below is a guide *** your way around Beijing’s transport options and dodging the traffic.

关键词：北京奥运会交通运输城市建设

china Goes All Out to Ward off H1N1 Flu

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china Today 2009年第6期58卷 24-25页

作者： ethel LU

AFTeR its debut in late March, A/H1N1 flu soon spread from Mexico and the U.S. to more than 30 countries and regions worldwide, including china’s mainland and Hong Kong, causing global alarm and prompting a flurry of... 详细信息

关键词：中国大陆禽流感病毒抵御世界卫生组织墨西哥

Radical Shifts in china’s Milk Market

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china Today 2009年第1期58卷 28-30页

作者： ethel LU

THe recent melamine scandal has bitten deep into china＇s milk industry, smearing a number of reputed domestic names and ruining the companies. Sanlu, the principal company implicated in the scandal, now faces bankrup... 详细信息

关键词：中国牛奶市场食品安全三聚氰胺

Making the Most of every cent in the Disaster Zone

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china Today 2008年第7期57卷 29-30页

作者： ethel LU staff reporter

MS. chen is not rich by any standard Forbes would acknowledge, but like her ancient predecessor spoken of once in a parable, she is a modest woman more rich in generosity for having sacrificed a greater portion of what little she had to spare. ＂i do-nated my monthly pay of 3,000 yuan,＂ she said, without false modesty. ＂it is my largest donation yet.＂

关键词：中国汶川地震国际援助爱心捐款

Healthy Babies for HiV/AiDS Mothers

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china Today 2005年第8期54卷 37-39页

作者： ethel LU staff reporter

clinical studies indicate that the risk of perinatal HiY/AiDS transmission, if not interrupted, is between 15 and 50 percent international statistics show that every year. there are 2.4 nillion HiV/AiDS infected pregn... 详细信息

关键词：艾滋病妇女防治措施中国