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Effect of Incorporation of Yam Flour and Moringa Powder in Wheat Bread on Glycemic Response

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Food and Nutrition Sciences 2022年第9期13卷 781-796页

作者： Akoua Aude-Mélissa Kokoh Béhiblo N. B. Konan jean ives kablan gnoumou Eric Elleingand Ernest Koffi Department of Chemical and Food Engineering (GCAA) Polytechnic National Institute Houphou&#235 t Boigny (INPHB) Yamoussoukro C&#244 te d’Ivoire Laboratory of Biology and Health UFR Felix Houphou&#235 t-Boigny University Abidjan C&#244 te d’Ivoire Laboratory of Biochemistry Agriculture and Biological Resources Valorization Faculty of Biosciences Félix Houphou&#235 t-Boigny University Abidjan C&#244 te d’Ivoire

This study aimed to investigate the effect of yam flour substitution (Dioscorea alata L.) and moringa powder in wheat bread on glycemic response. Glycemic index (GI) and glycemic load (GL) of pieces of bread were determined. A mixture plan design was used to determine the optimal formulation of bread made of yam flour, wheat flour and moringa powder. The mixture of 79.4% soft wheat flour, 20% yam flour and 0.6% moringa leaves powder has a good potential in bread preparation and was used in this study. 100% wheat bread was used as control. Postprandial blood glucose response (glycemic response) was evaluated with the glucose used as a reference food. Blood glucose responses were measured at different intervals for 2 hours. The results indicated that composite bread had low GI and GL values than wheat bread. Values are GI = 80 and GL = 61.2 for wheat bread and GI = 37.78 and GL = 29.65 for the composite bread. This study demonstrated that the inclusion of yam flour of moringa leaves powder in bread production might not pose a threat to blood glucose response compared to wheat bread. These pieces of bread could be included easily in diabetics’ and non-diabetics diet.

关键词： Glycemic Index Glycemic Load Composite Bread Yam Moringa Leaves Powder

Production of Cashew Apple Wine Enriched with Hibiscus sabdariffa Extracts

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Food and Nutrition Sciences 2023年第8期14卷 720-729页

作者： Esaïe W. Koui Doudjo Soro jean ives K. gnoumou Nogbou Emmanuel Assidjo Kouassi Benjamin Yao UMRI 58 Chimical Food and Environemental Process Sciences Felix Houphouet-Boigny National Polytechnic Institute Yamoussoukro C&#244te d’Ivoire Laboratory of Industrial Process of Synthesis and Environment (LAPISEN) Felix Houphouet-Boigny National Polytechnic Institute Yamoussoukro C&#244te d’Ivoire

This study focuses on enhancing the value of agricultural products by developing a process to produce wine from cashew apples enriched with extracts from Hibiscus sabdariffa. The formulation consisted of a blend of cashew apple juice and Hibiscus calyxes in a ratio of 90:10 (w/w). The Hibiscus calyxes were added at three different stages: before, during, and after fermentation. The physico-chemical analysis of the resulting wines revealed a pH range of 3.073 ± 0.005 to 3.583 ± 0.015 and acidity levels ranging from 4.018 ± 0.028 to 5.628 ± 0.059 g/L. The alcoholic strength ranged from 13.54% ± 0.036% to 13.86% ± 0.04%, with a soluble dry extract of 7.2 ± 0.25 to 8.1 ± 0.28 °B. Regardless of the stage of Hibiscus calyx addition, the fermentation kinetics and physico-chemical parameters met the standards set for wines.

关键词： Vinification Cashew Apple Hibiscus sabdariffa Fermentation

Design and Development of Wind-Solar Hybrid Power System with Compressed Air Energy Storage for Voltage and Frequency Regulations

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Journal of Power and Energy Engineering 2023年第2期11卷 1-24页

作者： Banet Masenga jean Byiringiro Charles Kagiri Edwell Tafara Daniel Ngoma gnoumou Aristid Mechatronic Engineering Department Dedan Kimathi University of Technology Nyeri Kenya Electrical Engineering Department Dedan Kimathi University of Technology Nyeri Kenya Mechanical Engineering Department Arusha Technical College Arusha Tanzania Industrial Engineering Department Université de Lisala Bukavu Democratic Republic of Congo

The intermittent nature of wind and solar photovoltaic energy systems leads to the fluctuation of power generated due to the fact that the power output is highly dependent upon local weather conditions, which results to the load shading issue that led to the voltage and frequency instability. In additional to that, the high proportions of erratic renewable energy sources can lead to erratic frequency changes which affect the grid stability. In order to reduce this effect, the energy storage system is commonly used in most wind-solar energy systems to balance the voltage and frequency instability during load variations. One of the innovative energy storage systems is the compressed air energy storage system (CAES) for wind and solar hybrid energy system and this technology is the key focus in this research study. The aim of this research was to examine the system configuration of the CAES system through modelling and experimental approach with PID controller design for regulating the voltage and frequency under different load conditions. The essential elements and the entire system have been presented in this work as thorough modelling in the MATLAB/Simulink environment for different load conditions. The developed model was tested through an experimental workbench using the developed prototype of the compressed air storage in the Siemens Lab at DeKUT and explored the consequence of the working parameters on the system proficiency and the model accuracy. The performance of the system for the developed prototype of CAES system was validated using results from an experimental workbench with MATLAB/Simulink R2022b simulation. The modeling and experimental results, shows that the frequency fluctuation and voltage drop of the developed CAES system during load variations was governed by the I/P converter using a PID_Compact controller programed in the TIA Portal V17 software and downloaded into PLC S7 1200. Based on these results, the model can be applied as a basis for the

关键词： Voltage Frequency Compressed Air Energy Storage Load Variations PID Control I/P Converter Valve

Evaluation of the Criteria in the Choice of Energy Storage or Non-Storage in Photovoltaic Systems in the Sahelian Zone

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Energy and Power Engineering 2021年第6期13卷 236-242页

作者： Bognini Y. Lucien jean B. Byiringiro Bognini W. Abraham gnoumou B. Aristide Kambou Célestin Génie énergétique et énergie renouvelable Distance Production House University Ouagadougou Burkina Faso DeKUT SIEMENS Mechatronics Certification Center Dedan Kimathi University of Technology Nyeri Kenya Génie industriel et efficacité énergétique Distance Production House University Ouagadougou Burkina Faso Génie énergie Distance Production House University Ouagadougou Burkina Faso Génie électrique et automatique Distance Production House University Ouagadougou Burkina Faso

In order to have a characterization of the criteria determining the choice of energy storage or non-storage in PV systems in the Sahelian zone, we used the research methodology described as a follow-up. First, we identify the criteria that determine the choice of energy storage or non-storage. In the rest of the work, we establish a prioritization of its criteria. Finally, the two phases written above, allowed us to develop an approach characterized by the weighting of the criticality index, which we implemented using the global decision matrixes of the AMDEC method (Analysis of the Modes of Failures of their Effects and Criticism). The validation of the model followed the rigour of the scientific approach through the methodology used. Thus, the validation of the choice of the specific criteria was made on our personal experience in pv, and the recurrence of its criteria in the literature encountered. The validation of the prioritization of the criteria is based on the quality of the results resulting from the rigorous application of the AMDEC method. This work refers to the problem of whether or not to set up an energy storage method to compensate for the off-peak periods (nights and obstacles that occur in the days) of energy production of the photovoltaic system. A determination of the determining criteria, in the choice of energy storage or non-storage in PV systems in the Sahelian zone, was made. The work also made it possible to establish a prioritization of these last criteria. The results obtained show that the proposed method allows for a prioritization of the determining criteria in the choice of energy storage or non-storage in PV systems in the Sahelian zone.

关键词： Storage Photovoltaic Criticality

New proposals for coupling cavitation models with laminar/turbulent transition models:application to a cavitation sheet over a NACA 16012

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Journal of Hydrodynamics 2024年第4期36卷 725-740页

作者： jean Decaix Institute of Sustainable Energy School of EngineeringHES-SO Valais-WallisHES SO University of Applied Sciences and Arts Western SwitzerlandDelemontSwitzerland

Since 1970s,several experimental works revealed that the cavitation sheet inception does not occur at the minimum pressure location but further downstream at the location of a laminar/turbulent *** of the cavitation models use the saturation vapour pressure as a threshold to initiate the production of vapour and therefore,are not able to capture such *** this paper,three modifications of the Schnerr and Sauer cavitation model are proposed and coupled with an algebraic laminar/turbulent transition *** to a NACA 16012 profile shows the ability of the modifications to move the cavitation inception at the right location compared with the *** of them,based on the multiplication of the evaporation term by the square of the turbulent intensity seems promising.

关键词： Reynolds-average Navier-Stokes laminar/turbulent transition cavitation sheet NACA 16012 hydrofoil

A Review on Thermophysical Properties and Nusselt Number Behavior of Al2O3 Nanofluids in Heat Exchangers

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Journal of Thermal Science 2021年第2期30卷 418-431页

作者： ISSA Roy jean College of Engineering West Texas A&M UniversityCanyonTexas 79016USA

During the last several years,the increase in cooling power requirements for heat exchangers have led to an escalation in heat transfer studies being performed on the use of nanofluids as heat transfer ***,limited effort has been attempted to relate and interpret these findings or the anomalies associated with *** paper compiles test data from several studies conducted on different types of heat *** this review,a concentrated effort is spent to clarify the ambiguities regarding the effect of nanoparticle size on the nanofluid thermal conductivity and Nusselt *** show that the nanofluid thermal conductivity is not influenced by the nanoparticle size,but by the clustering of the particles *** less compact the structure of the nanoparticle clustering is,the greater the enhancement in the nanofluid thermal conductivity *** were also compiled to interpret the relation between the nanofluid flow pattern,nanoparticles volume fraction in the base fluid,and the convective heat *** results from the majority of the heat exchanger studies show an increase in the heat transfer coefficient with the increase in nanoparticle volume ***,studies conducted on plate heat exchanges display some *** the majority of the heat exchanger studies with the exception of few,the decrease in the nanoparticle size is shown to result in an enhancement of the bulk fluid Nusselt *** test data also reveal that the effectiveness of the alumina nanoparticles is dependent on the flow *** increase in the nanoparticles concentration is shown to result in an increase in the nanofluid heat transfer enhancement as the fluid is transitioning from laminar to turbulent *** general,the smaller the nanoparticle size is,the greater the enhancement in the fluid Nusselt number is.

关键词： heat exchanger Nusselt number alumina nanofluid

Phase coexistence properties of liquid mercury:a simulation study

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Rare Metals 2006年第5期25卷 567-571页

作者： jean-Louis Bretonnet jean-Marc Bomont Laboratoire de Physique des Milieux Denses Université Paul Verlaine1bd F.D.Arago57078 MetzCedex 3France

The thermophysical properties of expanded liquid mercury have been investigated along the liquid-vapor coexistence curve by using Monte Carlo and Molecular Dynamic simulations. For the purpose, an empirical state dependent interatomic potential for the region of dense metallic liquid is used, while the state dependence is not necessary near the cliffcal point. In order to test the validity of this potential, we determine the surface layering and the sound velocity, two properties very sensitive to the choice of the potential. Our results are in quite good agreement with other theoretical results and to the experimental data available in the literature.

关键词： mercury simulation phase coexistence liquid state

A major step toward efficient and stable single-material organic solar cells

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Science China Chemistry 2019年第9期62卷 1085-1086页

作者： jean Roncali Group Linear Conjugated Systems CNRS Moltech AnjouUniversity of Angers Department of Chemistry and SOOMCC Faculty of Chemistry and Chemical EngineeringBabes-Bolyai University

Organic photovoltaics (OPV) can potentially combine low cost, lightness, flexibility and low environmental impact. In less than two decades, the power conversion efficiency(PCE) of OPV cells has increased from 1 to mo... 详细信息

关键词： Organic photovoltaics (OPV) power conversion efficiency(PCE) stable single-material organic solar cells

Bound and Resonating Multiquark Configurations

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Chinese Physics Letters 2024年第8期41卷 8-12页

作者： jean-Marc Richard Institut de Physique des 2 Infinis de Lyon Université Claude Bernard(Lyon 1) CNRS-IN2P34 rue Enrico Fermi69622 VilleurbanneFrance

We review the predictions of quark models for multiquark configurations that are bound or resonant states,and compare different methods for estimating the properties of resonances.

关键词： quark Configuration resonant