bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effet de quatre types de fertilisants sur la croissance et la productivité de deux génotypes de maïs (<i>Zea mays</i> L.) en cas d’un semis tardif à Korhogo au Centre-Nord de la Côte d’Ivoire
Authors: Siene Laopé Ambroise Casimir , Doumbouya Mohamed , Traore Mohamed Sahabane , Conde Mariame , N’guettia Tah Valentin Felix , Kone Mamadou 
Published: June 2020

Face à un appauvrissement des sols et une irrégularité des pluies du fait du changement climatique, une étude a été entreprise sur la culture du maïs au Centre-Nord de la Côte d’Ivoire. Elle avait pour objectif d’évaluer l’influence de quatre types de fumures sur le potentiel agronomique de deux génotypes de maïs (Zea mays L.) en cas de contrainte hydrique de fin de cycle et d’infertilité des sols. Le dispositif expérimental a été un split-plot, dont le premier facteur a été les fertilisants et le second, la variété. Les résultats ont montré que les fumures ont influencé les durées des phases végétative et reproductive en plus du rendement. Les fumures fiente de poulet et déjection de boeuf ont permis d’obtenir un rendement qui est égal à six fois celui obtenu avec le témoin de la variété à grain noir malgré la contrainte hydrique. Aussi, la fumure fiente de poulet a eu une tendance à réduire le cycle de culture et favoriser une meilleure croissance et un bon développement des plantes. L’utilisation de ces fumures en culture du maïs, pourrait constituer une alternative aux conséquences drastiques du changement climatique.
© 2020 International Formulae Group. All rights reserved.
Mots clés: Fertilisants, maïs (Zea mays L.), potentiel agronomique, rendement, contrainte hydrique
English Title: Effect of four types of fertilizers on the growth and productivity of two maize genotypes (Zea mays L.) in the event of late planting in Korhogo in North-Central Côte d'Ivoire
English Abstract
Faced with soil depletion and irregular rains due to climate change, a study was undertaken on maize cultivation in North-Central Côte d'Ivoire. Its objective was to assess the influence of four types of manure on the agronomic potential of two maize genotypes (Zea mays L.) in cases of water stress and soil infertility. The experimental set-up was a split-plot, the first five-level factor being fertilizers and the second two-level factor being variety. Observations were made on phenology, growth parameters and yield. The results showed that manure influenced vegetative and reproductive time, growth parameters and yield. In terms of yield, chicken droppings and beef droppings were the most effective. They yielded six times the yield obtained with the black-grain variety control despite the water constraint at the end of the cycle. Also, chicken manure has had a tendency to reduce the growing cycle and promote better growth and plant development. The use of these manure in maize cultivation could be an alternative to the drastic consequences of climate change.
© 2020 International Formulae Group. All rights reserved.
Keywords: Fertilizers, corn (Zea mays L.), agronomic potential, yield, water constraint
Evaluation de l’efficacité d’un programme d’entrainement combiné à une éducation nutritionnelle chez les adolescents obèses
Authors: Moussouami Simplice Innocent , Nigan Issiako Bio , Boussana Alain Marc , Biniakounou Paule Vanecia , Nouatin Basile , Mbemba François 
Published: June 2020

L’obésité est liée aux complications cardiovasculaires et métaboliques chez les adolescents. Cette étude vise à apprécier les effets d’un programme d’exercices physiques combinés à une éducation nutritionnelle sur la composition corporelle et le profil lipidique. Il s’agit d’une étude d’intervention qui a concerné cinquante adolescents obèses âgés de 14 à 18 ans repartis en deux groupes : groupe contrôle vs groupe intervention. Le groupe d’intervention a été soumis à un entrainement de 12 semaines et une intervention nutritionnelle. Les différentes mesures ont été effectuées au début, à 6 semaines et après l’intervention. Les résultats ont montré une diminution significative des valeurs de tour de taille (4,33%), du pourcentage de graisse (4,82%), des taux de LDL cholestérol (p = 0,01), du cholestérol total (p ˂ 0,001), des triglycérides (p ˂ 0,001) et de la glycémie à jeun (p ˂ 0,001) après l’intervention. Une augmentation significative du taux de HDL cholestérol (p = ˂ 0,001) a été aussi observée. Nos résultats indiquent que l’aérobic et le renforcement musculaire associés à une intervention nutritionnelle sont suffisants pour améliorer quelques indicateurs de santé. Ce programme peut probablement être utilisé comme traitement non pharmacologique dans la prévention et la prise en charge des adolescents obèses.Mots clés : Activité physique, éducation nutritionnelle, composition corporelle, lipides sanguins, école, Congo.
English Title: Evaluating the effectiveness of a training program combined with nutrition education in obese adolescents

Obesity is linked to cardiovascular and metabolic complications in adolescents. This study aims to assess the effects of a physical exercise program combined with nutritional education on body composition and lipid profile. It is an intervention study that involved fifty obese adolescents aged 14 to 18 years divided into two groups: control group vs. intervention group. The intervention group underwent 12 weeks of training and nutritional intervention. The different measurements were carried out at the beginning, at 6 weeks and after the intervention. The results showed a significant decrease in waist circumference values (4.33%), percentage of fat (4.82%), LDL cholesterol levels (p = 0.01), total cholesterol (p ˂ 0.001), triglycerides (p ˂ 0.001) and fasting blood glucose (p ˂ 0.001) after the intervention. A significant increase in HDL cholesterol (p ˂ 0.001) was also observed. Our results indicate that aerobics and muscle strengthening associated with a nutritional intervention are sufficient to improve a few health indicators. This program can probably be used as a nonpharmacological treatment in the prevention and management of obese adolescents.
Keywords: Physical activity, nutrition education, body composition, blood lipids, school, Congo.
Effects of ground granulated blast furnace slag and pulverized fuel ash on rheology of concrete
Authors: Bature A.S. , Khorami M. , Lawan A. 
Published: June 2020

The rheology of concrete containing Pulverized Fuel Ash (PFA) and Ground Granulated Blast Furnace Slag (GGBS) has been scarcely studied and reported, despite their increase application as Supplementary Cementitious Materials (SCM) that drives improvement of sustainability of the construction industry. This work studied the effect of these SCMs and Superplasticizer proportions on rheological properties of concrete using rate controlled concrete rheometer. Two groups of mixes containing replacement or addition on mass basis using either PFA or GGBS or their combinations were derived from the control mix. The dynamic yield stress, plastic viscosity and 28 day compressive strength of the control mix are 1258 Pa, 6 PaS, and 40.5 MPa respectively. The results of the rheology tests of the various binary mixes (PFA and Portland cement) and ternary mixes (Portland cement, PFA and GGBS) structural concrete shows wide disparity in the measured rheological parameters. The results show that the decrease in dynamic yield stress of the ternary mix containing 20% GGBS is 4.1%, whereas the decrease in dynamic stress of the ternary mix containing 20% PFA is 35.9% compared to the control ternary mix. The high volume Portland cement replaced ternary concrete can therefore be effectively characterized as a workable and pumpable concrete.
Keywords: Rheology, PFA, GGBS, superplasticizer, concrete.
Synthesis of fatty acid methyl esters from used vegetable oil using activated anthill as catalyst
Authors: Babatunde E.O. , Saka H.B. , Olutoye M.A. , Akpan U.G. , Auta M. 
Published: June 2020

In this present study transesterification of used vegetable oil (UVO) using synthesized activated anthill as catalyst was investigated. The catalyst was prepared via calcination process, characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) techniques. From the BET analysis; calcination temperature has a positive impact on the textural properties. The XRD shows that the catalyst is crystalline in nature. Fatty acid methyl esters (FAME) was produced using thermally activated anthill as catalyst. The optimal FAME yield of 94.85 % was obtained at Methanol/Oil (M/O) 9:1, catalyst loading 1.5 wt%, reaction temperature of 65 ᵒ𝑪 and reaction time of 2 h. The physico-chemical properties of UVO – FAME produced was found to be within the American Society for Testing and Methods (ASTM). Hence, the study reveals that used vegetable oil catalyzed by novel activated anthill could be an effective feedstock to produce sustainable energy.
Keywords: Anthills, FAME, Central composite design, Heterogeneous, used vegetable oil.
Investigating the lateral stability of three-wheeled scooter taxi due to tyre-road forces
Authors: Asuelinmen G.A. , Ojolo S.J. , Ajayi O.O. 
Published: June 2020

Three-wheeled scooter taxi (TWST) that is currently prevalent in developing countries, is fuel efficient and cheap. It is used mainly for commercial purposes, also as a means of reducing unemployment and tackling poverty. However, the vehicle is unstable and prone to accidents due to its design configuration. The aim of this research work is to investigate the lateral stability of TWST due to Tyre-Road Forces. Therefore, lateral stability equations for three-wheeled vehicle (TWV) were developed and used in the analysis of TWST based on parametric values obtained from static test. The results showed that the vehicle is stable with respect to lateral stability, which is in line with what was obtained from literature, thereby validating the models with the driver alone. However, with two or more occupants the vehicle became unstable. Possible ways of eliminating this instability were discussed. The static test procedure, if adopted and legislated upon, would significantly enhance safety of life and properties of stakeholders in developing countries.
Keywords: Three-wheeled scooter Taxi, Stability Analysis, Safety of life and properties, Legislation.
Analysis of factors that influence the calorific value of mangrove wood for electricity generation using split- split plot design
Authors: Omidih L.A. , Omotehinse S.A. 
Published: June 2020

The issue of energy shortage in Nigeria has been a concern for both the Nigerian government and the people for the past four decades. In many third world countries and indeed many parts of Africa, Nigeria inclusive, electricity is abysmally in short supply. This is somehow due to over dependence on fossil fuels which accounts for greater part of the power generation but with an unreliable supply chain. This study seeks to apply Split-Split plot experimental design as statistical tool to analyze factors that influence the calorific value of mangrove wood during combustion for electricity generation. The combustion process was carried out at the National Centre for Energy and Environment, University of Benin. Each of the wood samples was pulverized to enable easy combustion. Bomb calorimeter was used to carry out the test on the various pulverized wood samples. The calorific value of each sample was collected and recorded in three replications. The result of the study shows that the raw materials location has differential treatment effect on the calorific value of the raw material type employed. It was discovered that the differential treatment effect produced by the raw materials type is largely due to the location of the raw materials. The result obtained from the analysis also shows interaction between the raw materials location and the different raw material types to influence the calorific value of the white mangrove, red mangrove and rubber wood used in this study.
Keywords: Energy, Electricity generation, Wood waste, Fossil fuel, Split-Split Plot.
Effect of atmospheric impairments on ku-band free-to-air digital satellite television signals in Lagos State
Authors: Gbenga-Ilori A.O. 
Published: June 2020

With the rapid deployment of free-to-air satellite television, there is an increasing need for an accurate propagation prediction tool for satellite link planning. This paper presents an evaluation of deterministic propagation model that is best for the analysis of satellite signal quality at Ku-band in Lagos state, Nigeria. The paper aims at comparing accurate measurements of channel-to-noise (C/N0) and bit error rate (BER) taken at six locations within Lagos state with simulation results derived from the Institut für Rundfunktechnik (IRT) model and modified irregular terrain model (ITM) deterministic propagation models. The work considered the effect of the type of modulation scheme and error correction code used on the C/N0 and BER received using these deterministic propagation models. Results show a deviation of 0.732 dB and 0.285 dB from C/No measurements using the IRT and modified ITM models respectively. This work shows that at more than 1% of the time, both models performed well when compared with measurements. However, at less than 1% of the time, which accounts for periods of heavy rainfall, the modified ITM model performed better. The paper also shows that when error correction code is not used with the modulation scheme deployed, the BER increases rapidly and the effect of using a higher alternate modulation symbol is not evident on achievable data rates.
Keywords: Bit error rate, deterministic propagation models, Ku-band, satellite link planning
Application of <i>Mangifera indica</i> (mango) and <i>Phoenix dactylifera</i> (dates) seeds powders as coagulants in wastewater treatment
Authors: Kuhiyop E.A. , Adie D.B. , Abubakar U.A. 
Published: June 2020

This research was aimed at studying the possibility of efficiently combining Mangifera indica and Phoenix dactylifera seeds powders as coagulants in wastewater treatment. The seeds were characterized for their composition, active compounds and proximate constituents using atomic adsorption spectroscopy, Scanning Electron Microscopy, and X-ray Diffraction analysis. Jar test was carried out using the seeds extracts separately and in combination at varying dosages and the Electrical Conductivity, Total Dissolved Solids, Chemical Oxygen Demand, Biochemical Oxygen Demand, Turbidity, Temperature, pH, and Total coliform were measured with every varying dosage. Statistical tools were used to validate the results of the Jar test. The sludge from the Jar test experiment was analyzed for its total nitrogen, organic carbon, organic matter, total volatile solids, and carbon: nitrogen ratio. Mangifera indica removed 89% turbidity, 96% BOD, 84% COD and 99% total coliform of the wastewater. Phoenix dactylifera removed 75% turbidity, 85% BOD, 78% COD and 88% total coliform of the wastewater. Their combination removed 96% turbidity, 96% BOD, 87% COD and 98% total coliform of the wastewater.
Keywords: Mangifera indica, Phoenix Dactylifera, Coagulants, Wastewater
Assessment of some heavy metals concentrations in soil and groundwater around refuse dumpsite in Ibadan Metropolis, Nigeria
Authors: Saheed I.O. , Azeez S.O. , Jimoh A.A. , Obaro V.A. , Adepoju S.A. 
Published: June 2020

This study reports the determination of some heavy metals’ concentration in soil and groundwater around refuse dumpsites in five locations in Ibadan Metropolis, Nigeria. Five samples were collected from each soil and ground water locations and analysed for heavy metals(Cd, Co, Pb, Cr, Zn, Mn and Ni)using Atomic Absorption Spectrophotometry. The soil samples were obtained in triplicates at 25cm depth intervals whereas the water samples were obtained from hand dug wells less than 10 m deep. The range of the values of heavy metal concentrations obtained in water is Co (0.01-0.04), Pb (0.01-0.02), Cr (0.02-0.05), Zn (0.40-0.70), Mn (0.02-0.05) and Ni (0.02-0.05), but Cadmium was not detected. The concentrations of Pb and Ni in ground water obtained from Arapaja, Aleshinloye and Alafara were higher than the World Health Organization (WHO) and Standard Organisation of Nigeria (SON) limits. The results obtained showed that the concentrations of Cd, Co, Pb, Ni and Cr in soil exceeded the WHO and SON permissible limits. However, Zn and Mn were below the limit.
Keywords: Heavy metals, Dumpsite, Groundwater, Soil samples, Concentrations.
State of play on the use of building construction standards in Congo-Brazzaville
Authors: Ndongo A.S. , Malanda N. , Bahouayila B. 
Published: June 2020

This work aims to assess the existence and use of local standards in the field of building construction in Congo-Brazzaville. Surveys were carried out among construction companies, design offices and construction control firms operating in the construction industry. The results show that, overall, design offices, control or engineering consulting firms have more knowledge about the existence of construction standards, unlike construction companies. Indeed, it appears from this study that the probability of knowing of the existence of Congolese standards in construction control firms and construction companies is very low compared to engineering firms. The evidence provided by our sample also shows that structures involved in technical studies and real estate expertise are less aware of the existence of Congolese standards. Also, we note that the rate of knowledge about the existence of Congolese standards is more recorded at the level of structures that use foreign standards (16.90% against 9.09%), than those that do not use them. These structures also have knowledge of the effects (negative or positive) on the use of these foreign standards on construction (22.22% versus 3.57%) in Congo. Construction professionals must take into account certain technical specificities related to natural and social phenomena in the implementation of their construction projects in order to avoid early depreciation of the works carried out.
Keywords: Standards, building construction, survey, use, statistical analysis.
Influence of production systems and sex on nutritional value and meat quality of native Malawian Muscovy ducks
Authors: Tanganyika J , Webb E.C. 
Published: June 2020

This study was conducted to assess effects of production systems and sex on nutritional value and meat quality of native Malawian Muscovy ducks. One hundred twenty ducks were randomly assigned to either an intensive (IS), duck-rice integration (DR) or free-range (FR) production system. A starter ration containing 20% crude protein and a finisher containing 17% crude protein were fed to ducks in IS (1 to 4 weeks), and provided as a supplement to ducks in DR and FR (5 to 10 weeks). Feed and water were offered ad libitum. At 10 weeks of age, 16 ducks per treatment were selected randomly, slaughtered and chilled at 4 °C for 24 hours. Carcass temperature, pH and meat colour were measured at 45 min, and at 3, 6, 12 and 24 hours post mortem. Tenderness, cooking loss, proximate and mineral composition were determined 24 hours post mortem. Production system and sex had no effect on carcass temperature, pH and proximate composition of duck breast meat. However, production system affected tenderness and mineral composition of the meat and sex influenced moisture and tenderness. Males were moister and had less tender meat than females. Carcasses from ducks in the FR system contained more zinc, copper, manganese, and potassium, but less iron while those in IS had the lowest mineral content of the three production systems. Thus, DR can be adopted to improve the current FR system of native Malawian Muscovy duck production with supplementation to produce duck with acceptable mineral composition and better meat quality.
Keywords: cooking loss, meat colour, mineral, proximate composition
Performance of fast, medium and slow growing broilers in indoor and free-range production systems
Authors: Sarica M , Yamak U.S. , Boz M.A. , Erensoy K , Cilavdaroglu E , Noubandiguim M 
Published: June 2020

This study compared growth and carcass traits of 2 medium-growth crossbred, 4 slow-growth crossbred, 1 commercial slow-growth and 1 commercial fast-growth broiler strains raised in indoor and free-range production systems. One hundred twenty chicks of each strain were raised in each production system. Chicks were raised in indoor pens at a density of 10 chicks per m2. From day 29 until slaughter at 84 days of age, chicks in the free-range system were given outdoor access through doors that were open between 8.00 - 17.00 hours. The study found live weight, feed efficiency, and mortality were significantly affected by strain. However, no significant differences were found between the production systems. Outdoor access varied significantly among strains, with the commercial high-growth and medium-growth crossbred strains making less use of outdoor areas. In terms of performance traits, none of the strains showed any significant differences in performance between the indoor and free-range production systems. However, significant differences among the strains in carcass traits, pH, and colour values of thigh and breast meat were observed in connection with differences in growth rate. Moreover, carcass and breast yields were greater in fast and medium-growth broilers, while ratios of edible inner organs were greater in medium and slow-growth broilers.
Keywords: abdominal fat, animal welfare, breast to thigh ratio, feed efficiency, outdoor access, slaughter and carcass traits
Genetic improvement of sow longevity and its economic impact on commercial pork production
Authors: Mote B.E. , Serenius T.V. , Supakorn C , Stalder K.J. 
Published: June 2020

Sow longevity (sow productive lifetime) plays an important role in economically efficient piglet production. Direct selection for sow longevity is not commonly practiced in any pig-breeding program. In recent years, an increased number of peer reviewed articles addressing the economic impact, genetic parameter estimates, and genomic information (including markers and single nucleotide polymorphisms for sow longevity) have been published in the scientific literature. The studies in the literature indicate that sow longevity is a complex trait having economic value and is an animal well-being concern for commercial pork producers. Studies have concluded that sufficient genetic variation exists so that selection to improve sow longevity should be effective. Unlike the dairy industry, the primary parent animal used in the swine industry is a crossbred female, typically F1 (Landrace X Large White or Yorkshire). Sow longevity has shown to be genetically related with prolificacy and leg conformation traits. Sow longevity seems to be the ideal trait to utilize genomic selection when attempting to improve the trait. The genetic correlation between purebred and crossbred sow longevity is low. Since the crossbred sow is the breeding objective, phenotypic data from the crossbred females should ideally be used when estimating the breeding values for sow longevity that are used in the indexes to evaluate nucleus animals. Genomic selection is best suited for sex-limited traits, traits expressed later in life, and many animals do not reach some defined end-point parity, sow longevity seems ideally suited to be evaluated using the latest genome enabled selection technology.
Keywords: heritability, leg conformation, selection, sow productive lifetime