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Effects of warming and drought stress on the growth characteristics,photosynthetic-transpiration rates,and yield of winter wheat

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 121-129页

作者： Qian Li Yang Gao abdoul Kader Mounkaila Hamani Guangshuai Wang Junming Liu Yuanyuan Fu Xingpeng Wang College of Water Resource and Architecture Engineering Tarim UniversityAlar 843300XinjiangChina Institute of Farmland Irrigation Chinese Academy of Agricultural SciencesXinxiang 453002HenanChina

Climate change has limited crop productivity *** crop response to global climate changes is vital to maintaining agricultural sustainable development.A two-year experiment was conducted to investigate the effects of warming and drought on crop growth and winter wheat yield *** results showed that both warming and drought shortened the crop growth period,reduced the leaf area index,and increased winter wheat biomass *** sufficient water supply conditions,warming would increase photosynthetic and transpiration rates and water use efficiency,while under water deficit conditions,the opposite was *** warming conditions,the grain yield of the water deficit treatment was 8.9%lower than that of the sufficient water supply *** non-warming conditions,the grain yield of water deficit treatment was 12.4%lower than that of the sufficient water *** the conditions of water-sufficient supply,the grain yield of the warming treatment was 4.4%lower than that of the non-warming treatment,and under the conditions of water deficit,the grain yield of the warming treatment was 1.3%lower than that of the non-warming *** tends to decrease wheat growth and grain yield,but sufficient water supply could improve winter wheat’s water use efficiency and reduce the warming limitation on wheat production.

关键词： winter wheat warming leaf area index photosynthetic rate yield biomass

检查清单和错误报告系统在提高患者安全和减少医疗差错方面的有效性:叙述性回顾

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International Journal of Nursing Sciences 2024年第3期11卷 387-398页

作者： Emmanuel Aoudi Chance Dia Florence Innocent Sardi abdoul VID Specialized University BergenNorway Universite de Bertoua Cameroon Univerity of Ngaoundere Cameroon

目的探讨检查清单和错误报告系统对医院患者安全和医疗错误的影响。方法系统检索2013-2023年的学术数据库,对符合纳入标准的同行评议研究进行严谨的方法学评估。该综述强调了支持核对表在减少用药错误、手术并发症和其他不良事件方面的... 详细信息

目的探讨检查清单和错误报告系统对医院患者安全和医疗错误的影响。方法系统检索2013-2023年的学术数据库,对符合纳入标准的同行评议研究进行严谨的方法学评估。该综述强调了支持核对表在减少用药错误、手术并发症和其他不良事件方面的有效性证据。错误报告系统提高了透明度,鼓励专业人员报告事件并识别系统漏洞。结果检查表和错误报告系统相互关联,在检查表的实施中强调跨专业合作。文章中使用的不同方法和潜在的发表偏倚可能产生局限性;此外,语言限制可能会排除有价值的非英语研究。虽然积极的影响是显而易见的,但成功取决于组织文化和资源。结论通过查阅相关文献,强调干预措施的重要性,并呼吁进一步研究检查清单和错误报告系统在不同医疗保健和文化背景下的有效性,有助于提高患者安全知识。了解这些动态变化对于医疗保健提供者优化患者安全至关重要。

关键词：患者安全医疗错误检查表错误报告系统健康状况

On a Compound Poisson Risk Model Perturbed by Brownian Motion with Variable Premium and Tail Dependence between Claims Amounts and Inter-Claim Time

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Open Journal of Statistics 2024年第1期14卷 1-37页

作者： Delwendé abdoul-Kabir Kafando Kiswendsida Mahamoudou Ouedraogo Pierre Clovis Nitiema Department of Mathematics University Joseph Ki-Zerbo Ouagadougou Burkina Faso Department of Mathematics University Ouaga 3s Ouagadougou Burkina Faso Department of Mathematics University Thomas-Sankara Ouagadougou Burkina Faso

This paper considers the compound Poisson risk model perturbed by Brownian motion with variable premium and dependence between claims amounts and inter-claim times via Spearman copula. It is assumed that the insurance company’s portfolio is governed by two classes of policyholders. On the one hand, the first class where the amount of claims is high, and on the other hand, the second class where the amount of claims is low, this difference in claim amounts has significant implications for the insurance company’s pricing and risk management strategies. When policyholders are in the first class, they pay an insurance premium of a constant amount c1 and when they are in the second class, the premium paid is a constant amount c2 such that c1 > c2. The nature of claims (low or high) is measured via random thresholds . The study in this work will focus on the determination of the integro-differential equations satisfied by Gerber-Shiu functions and their Laplace transforms in the risk model perturbed by Brownian motion with variable premium and dependence between claims amounts and inter-claim times via Spearman copula. .

关键词： Gerber-Shiu Function Copula Integro-Differential Equation Laplace Trans-form Brownian Motion

Reversible Semi-Fragile Watermarking Technique for Integrity Control of Relational Database

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Engineering（科研） 2024年第9期16卷 309-323页

作者： Ali Hamadou abdoul Aziz Issaka Hassane Lanciné Camara Harouna Naroua Department of Mathematics Dan Dicko Dankoulodo University of Maradi Maradi Niger Social Science and Management University of Bamako Bamako Mali Department of Mathematics and Computer Science Abdou Moumouni University Niamey Niger

Reversible watermarking schemes for relational database are usually classified into two groups: robust schemes and fragile schemes. The main limitation of existing reversible fragile methods is that they cannot differentiate between legal and malicious modifications. In this paper, we introduce a novel lossless semi-fragile scheme based on prediction-error expansion for content protection of relational database. In the proposed method, all attributes in a database relation are first classified according to their sensitivity to legitimate updates. Then, the watermark is embedded by expanding the prediction error of the two least significant digits of securely selected attributes. At watermark extraction, the proposed method has the ability to fully restore the original data while detecting and localizing tampering. The applicability of our method is demonstrated theoretically and experimentally.

关键词： Semi-Fragile Watermarking Integrity Control Reversibility Prediction-Error Expansion

Performance Study of a Quadratic Boost Converter

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Circuits and Systems 2024年第2期15卷 13-27页

作者： Modou Badiane Prince abdoul Aziz Honadia Oumar Diallo Sadio Fabé Idrissa Barro Department of Physics Semiconductors and Solar Energy Laboratory Faculty of Science and Technique Cheikh Anta Diop University Dakar Senegal Renewable Thermal Energy Laboratory Kaya University Centre Ouagadougou Burkina Faso

Energy is the driving force behind all economic and industrial development. Africa is the least advanced continent in terms of energy consumption and production. Paradoxically, it is the sunniest continent, which is why our objective is to exploit this energy potential in order to produce and use sufficient energy. To achieve this, we are carrying out a series of studies aimed at developing a device capable of converting solar photovoltaic energy into electrical energy. This device is a two-stage converter, the first of which is a quadratic boost and the second a full bridge. Initially, this paper is devoted to studying the performance of the quadratic boost.

关键词： Solar Energy Photovoltaic Efficiency Quadratic Boost Converter

Experimental Study of a Quadratic Boost: The Cascaded Connected Single Switch

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Smart Grid and Renewable Energy 2024年第6期15卷 139-148页

作者： Prince abdoul Aziz Honadia Bernard Zouma Adama Ouédraogo Fabé Idrissa Barro Department of Physics and Chemistry Centre Universitaire de Kaya (CU-K) Kaya Burkina Faso Thermal Renewable Energies Laboratory Department of Physics Joseph Ki-Zerbo University Ouagadougou Burkina Faso Semiconductors and Solar Energy Laboratory Department of Physics Faculty of Science and Technique Cheikh Anta Diop University Dakar Senegal

The quadratic boost is studied under its real model. The equations, of the continuous conduction mode, descriptive of this model are established. From these equations, the expressions of the voltage gain and the efficiency are extracted. These two quantities are plotted as a function of the duty cycle in order to appreciate them in different operating points of the transistor. The values of the different components have also been extracted for the fabrication of a prototype of the converter. Thanks to a set of experimental measurements at the input as well as at the output of the prototype converter, the voltage gain and the efficiency could also be observed. These were also plotted for different loads to observe converter behavior. The theoretical curves were compared with the experimental curves which allowed to validate the proposed mathematical models on a large range of duty cycles.

关键词： Voltage Gain Factor Conversion Efficiency Duty Cycle Quadratic Boost

Effect of Size and Initial Water Content on the Effective Diffusion Coefficient during Convective Drying of Sweet Potato Cut into Cubic and Cylindrical Shapes

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Journal of Materials Science and Chemical Engineering 2024年第6期12卷 71-82页

作者： Ibrango abdoul Salam Ouoba Kondia Honoré Bama Désiré Traoré Yssa Zongo Karim Ouedraogo Salifou Laboratoire de Matriaux de lHliophysique et Environnement (La.M.H.E.) Unit de Formation et de Recherche en Sciences. Exactes et Appliques (UFR/SEA) Universit Nazi BONI de Bobo-Dioulasso Bobo-Dioulasso Burkina Faso

In this article, we investigated the influence of size and initial water content on the effective diffusion coefficient of sweet potatoes samples cut into cubic and cylindrical shapes. The sizes of the cubic samples are 0.5, 1, 1.5, 1.75, 2, 2.5 and 3 cm edge with a respective initial water content of 2.7, 3.76, 3.48, 2.68, 3.28, 2.17 and 2.29 kg/kgms. For cylindrical samples, the radius is set at 0.5 cm and sample heights are 1, 1.5, 2, 2.5, 3, 3.5 and 4 cm with respective water contents of 2.2, 3.19, 2.85, 2.1, 2.17, 2.39 and 2.03 kg/kgms. The effective diffusion coefficients of cubic samples are of the order of 10−10 and 10−9 m2∙s−1 grew with sample edge. As for the cylindrical samples, the effective diffusion coefficients were of the order of 10−9 m2∙s−1 and there was no linear correlation between cylinder height and their effective diffusion coefficient. As for the examination of the initial water content on the effective diffusion coefficient, it turned out that the initial water content had no influence on the effective diffusion coefficient of the sweet potato samples.

关键词： Effective Diffusion Coefficient Initial Water Content Sweet Potato Cubic Cylindrical

Alternative Phenotypic Profile for B-Cell Abnormality in a Case at Zinder National Hospital

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Open Journal of Blood Diseases 2024年第1期14卷 8-16页

作者： Brah Moustapha Maman Amadou Djibrilla-Almoustapha Moustapha Elhadji-Chefou abdoul-Aziz Garba Badé Malam-Abdou Department of Medicine Université André Salifou de Zinder Zinder Niger Department of Medicine H&#244pital National de Zinder Zinder Niger Department of Medicine Université Abdou Moumouni de Niamey Niamey Niger Department of Medicine Université Dan Dicko Dan Koulodo de Maradi Maradi Niger

Introduction: Since it is impossible to establish a diagnosis in the presence of hyperlymphocytosis not secondary to lymphocytic hyperactivation, we considered a B-lymphoid hematopathy with a non-specific phenotypic profile. We report one case of this. Observation: This is a forty-eight (48) year old patient with hyperlymphocytosis at 139,000 elements per cubic millimeter, heterogeneous splenomegaly at 25.6 cm in diameter on abdominal ultrasound without detectable deep or peripheral lymphadenopathy. Peripheral blood cytology shows lymphocyte cell proliferation suggestive of the circulating phase of chronic lymphoproliferative B syndrome. The expression profile of cell membrane markers did not allow for the definition of a specific phenotypic profile. Faced with this immunophenotyping result, we considered a B-lymphoid hemopathy with a non-specific phenotypic profile. After three courses, the MINICHOP treatment was used to achieve partial remission with wasting of more than 80% of the evaluable masses. Conclusion: Despite the contribution of immunophenotyping in the diagnosis of lymphoproliferative syndromes, it is possible to consider the diagnosis of a B-lymphoid hemopathy with a phenotypic non-specific profile of CD45+, monotypic kappa, CD19+, FMC7+, CD22+, CD5−, CD79b−, CD23−, CD43−, CD38−, CD200−.

关键词： Hyperlymphocytosis CLL Immunophenotyping MINICHOP

Exoscopy of Detrital Zircons from Niamey Neoproterozoic Sandstones (Eastern Edge of the West African Craton, Southwestern Niger): Interpretation of Detrital Sediments Provenance

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Open Journal of Geology 2024年第5期14卷 617-628页

作者： Hassan Ibrahim Maharou Karimou Laouali Idi Diafarou Alzouma Amadou Salissou abdoul Ganiou Amadou Gnissa Sidibé Moussa Konaté Department of Geology Faculty of Science and Techniques Abdou Moumouni University Niamey Niger Department of Life and Earth Sciences Ecole Normale Sup&#233rieure (ENS) Abdou Moumouni University Niamey Niger

This study focuses on exoscopic analyses of detrital zircon grains of Archean and Paleoproterozoic age, contained in the sediments from the Niamey Neoproterozoic sandstones (Niamey region), with a view to confirming the sediments sources already proposed (Kénéma-Man domain for Archean-age zircons and Baoulé Mossi domain for Paleoproterozoic-age zircons). Exoscopic analysis reveals that Archean zircon grains are more corroded, with rounded to sub-rounded shapes, while Paleoproterozoic zircon grains are less corroded and mostly angular in shape. The strong corrosion of Archean zircon grains, implying long-distance transport, is consistent with the remoteness of the Kenema-Man domain which are the source these sediments. The fact that the Paleoproterozoic zircon grains show little or no wear implies a proximal source of sediments, corresponding to the Baoulé Mossi domain.

关键词： Exoscopic Analysis Detrial Zircon Grains U-Pb Ages Niamey Neoproterozoic Sandstones Niamey Region