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International Journal of Geosciences 2023年第9期14卷 827-839页

作者： Yacouba Sawadogo m’bi kaboré Somaïla Koala Arouna mandé Jean Louis Zerbo Laboratoire de matériaux d’Héliophysique et Environnement (La.M.H.E) Université Nazi BONI Bobo-Dioulasso Burkina Faso

In this paper, we studied the seasonal behavior of the total electron content (TEC) during a part of solar cycle 24 ascending, maximum and decreasing phases at Koudougou station (Latitude: 12°15'09"N Longitude: 2°21'45"W). Response of TEC to solar recurrent events is presented. The highest values of the TEC in 2014, 2015 and 2016 were recorded on march and October, while in 2013 they were recorded on April and November, corresponding to equinox months. This observation shows that TEC values at the equinoxes are higher than those of solstices. moreover, the monthly TEC varies in phase with the sunspots number showing a linear dependence of the TEC on solar activity. The ionospheric electron contents are generally very low both before noon and during the night, but quite high at noon and after noon. This pattern of TEC variation is due to the fluctuation of incident solar radiation on the Earth’s equatorial ionosphere. During quiet periods, the number of free electrons generated is lower than that generated during recurrent periods, which shows a positive contribution of recurrent activity to the level of the TEC. Investigations have also highlighted a winter anomaly and equinoctial asymmetry in TEC behavior at Koudougou station.

关键词： Total Electron Content (TEC) Recurrent Activity Quiet Activity Seasonal Variation

Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

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Neural Regeneration Research 2025年第4期20卷 1164-1177页

作者： Pengfei Wang Yuewei bi min Li Jiazhi Chen Zhuyong Wang Huantao Wen ming Zhou minjie Luo Wangming Zhang Neurosurgery Center Department of Pediatric NeurosurgeryGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

Long-term levodopa administration can lead to the development of levodopa-induced *** oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced ***,studies have reported increased oscillation power in cases of levodopa-induced ***,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced ***,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is *** found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s ***,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(m1)↔dorsolateral striatum gamma *** of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional m1↔dorsolateral striatum ***,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the m1→dorsolateral striatum *** findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

关键词： aperiodic components dopamine D3 receptor dorsolateral striatum functional connectivity gamma oscillations levodopa-induced-dyskinesia local field potentials neuromodulation Parkinson’s disease primary motor cortex

Variability of the Critical Frequency foF2 during minimum and maximum Phases of Solar Cycles 20 and 21: A Comparative Study between American and African Equatorial Regions

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Atmospheric and Climate Sciences 2022年第1期12卷 105-112页

作者： kaboré m’bi Diabaté Abidina Ouattara Frédéric Laboratoire de Recherche en Energétique et météorologie de l’Espace (LAREmE) Université Norbert Zongo Koudougou Burkina Faso Laboratoire de matériaux d’Héliophysique et Environnement (LAMHE) Université Nazi Boni Bobo Dioulasso Burkina Faso

The present work is a comparative study between the foF2 variabilities for two equatorial regions (Ouagadougou: lat. 12°21'N;long. 1°30'E, dip. 1.43° in Africa and Huancayo: Lat. 12°S;Long. 75°12'Wmily:Verdana;"> in America) during solar cycles 20 and 21 minima and maxima phases under geomagnetic extreme conditions (quiet and disturb). Profiles from these two stations are very similar for all the seasons over the solar cycles. However, measured data from Huancayo station are higher than those from Ouagadougou station during

关键词： foF2 Longitudinal Variation Seasonal Variation

Variability of the Critical Frequency foF2 for Equatorial Regions during Solar Cycle’s minima and maxima at Ouagadougou and manila Stations

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International Journal of Geosciences 2019年第10期10卷 833-844页

作者： kaboré m’bi Zerbo Jean Louis Zoundi Christian Ouattara Frédéric Laboratoire de Recherche en Energétique et météorologie de l’Espace (LAREmE) Université Norbert Zongo Koudougou Burkina Faso Laboratoire de matériaux d’Héliophysique et Environnement (LAMHE) Université Nazi Boni Bobo Dioulasso Burkina Faso.

In this paper we report on the foF2 variabilities for two equatorial regions (Ouagadougou: Lat. 12.4°N;Long. 358.5°E, Dip. 1.43°S;and manila: Lat. 14°36'15.12''N;Long. 120°58'55.92''E;Dip. 0.6°S) during solar cycles 20 and 21 minima and maxima phases. many previous works have argued on the diurnal and seasonal variation of foF2 for different solar events conditions for latitudinal position. But there are few investigations for Africa equatorial region longitudinal variation. The present paper’s goal is to outline possible similarity in foF2 behavior between variations for better understanding of physical process lead to some observed phenomenon in Asia-Africa equatorial sector. The F-layer critical frequency (foF2) data observed from the two equatorial ionosonde stations have been used for the present comparative study. The results show significant similarity between the critical frequency (foF2) seasonal variations over the time intervals 1976-1996. During day-time measured data from manila station are higher than those from Ouagadougou station. That may lie in that manila is closer to equatorial ionization crest region. During solar minimum phase, the longitudinal variation of foF2 shows two crossing points (11:00 UT and 22:00 UT) between the foF2 profiles form the two stations for all seasons regardless of the solar cycle. However during intense solar activity condition, the number of crossing-point between measured data from manila and Ouagadougou stations varies by seasons and solar cycle. This phenomenon may be due to the compilations of severe activities (storms, coronal mass ejection, heliosheet fluctuations) during the solar maximum phases.

关键词： Critical Frequency (foF2) Longitudinal Variation Seasonal Solar Cycle

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食品4D打印技术在食品工业中的应用进展

食品工业科技 2025年第1期46卷 424-430页

作者：童强肖帅磊毕野吴豪董秀萍大连工业大学机械工程与自动化学院辽宁大连116034 海洋食品加工与安全控制全国重点实验室国家海洋食品工程技术研究中心辽宁省海产品精深加工产业共性技术创新平台大连市中式预制食品技术创新中心辽宁大连116034 大连工业大学食品交叉科学研究院辽宁大连116034

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、... 详细信息

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、可设计和可控制的特点,其潜力和影响力正在不断扩大。近年来,4D打印技术在现代食品加工领域也得到了广泛的研究和应用,通过4D打印实现食品结构、营养成分、口感等特性的精准控制。本文综述了食品4D打印技术原理、要素及优势,分析了食品4D打印在现代食品加工领域中的应用进展,包括4D打印材料特性、外界刺激等方面,并重点探讨了4D打印智能食品的微观结构控制与口感之间的关系,最后展望了食品4D打印技术发展趋势和挑战,旨在为现代食品加工领域提供参考借鉴。

关键词： 4D打印增材制造食品加工外界刺激微结构控制

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Fluctuation of Quantum Information Density in Curved Time-Space

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Chinese Physics Letters 2007年第4期24卷 859-862页

作者： bi Qiao Department of Physics Wuhan University of Technology Wuhan 430070 Center of Advanced Nanotechnology University of Toronto M5S 3E4 Canada

A dynamical equation for quantum information density （QID） in curved spacetime is presented. The related fluctuation of QID with quantum Einstein equation is also discussed, which reveals the measuring of the dynami... 详细信息

关键词： Fluctuation of Quantum Curved Time-Space

Bubble Coalescence Heat Transfer During Subcooled Nucleate Pool Boiling

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工程热物理学报 2012年第12期33卷 2171-2175页

作者： Abdoulaye Coulibaly LIN Xipeng bi Jingliang David m Christopher Department of Thermal Engineering Tsinghua University

Bubble coalescence during subcooled nucleate pool boiling was investigated experimentally using constant wall temperature boundary conditions while the wall heat flux was measured at a various locations to understand the effects of coalescence on the heat *** observations showed that the coalesced bubble moved and oscillated on the heater surface with significant heat transfer variations prior to *** observations also showed coalescence with no increase in the heat transfer *** heat flux for boiling with coalescence fluctuated much more than for single bubble boiling due to the vaporization of the liquid layer trapped between the bubbles.

关键词： microheater pool boiling bubble coalescence bubble dynamics

INTROmISSION OF WATER-REPELLENT AND HYDROSCOPIC PROPERTIES SImULTANEOUSLY TO PP BY PLASmA DISCHARGE mETHOD

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Chinese Journal of Polymer Science 2005年第1期23卷 83-92页

作者： JieLiang bi-qianLiu InstituteofChemistry ChineseAcademyofSciencesBeijing100080China

Plasma-induced surface graft copolymerization of acrylic acid on polypropylene non-woven fabric(PP-g-AA)andpolypropylene membrane were *** extents of grafting were controlled by the plasma and *** ammonium bromide was then coupled with the carboxyl group of PP-g-AA to obtain apolyion complex(PIC).At last,CF_4 plasma was used to give PICs hydrophobic *** moisture regain and water-repellency of the processed PICs was *** surfaces were characterized using ATR FT-IR and *** resultindicates that the products have very high ability to adsorb moisture,even better than cotton *** the same time,theproducts show excellent hydrophobic property,which can't be wetted by those reagents whose surface tensions were higherthan 327 mN/m.

关键词： Polypropylene non-woven fabric Plasma-induced grafting Hexadecyltrimethyl ammonium bromide CF_4 plasma treatment moisture sorption Hydrophobicity.

Generalized stress field in granular soils heap with RayleigheRitz method

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Journal of Rock mechanics and Geotechnical Engineering 2017年第1期9卷 135-149页

作者： Gang bi CH2m Inc. Englewood USA Chongqing Titan Architects-multi-Disciplinary Practice Co. Chongqing China

The stress field in granular soils heap(including piled coal) will have a non-negligible impact on the settlement of the underlying soils. It is usually obtained by measurements and numerical *** the former method is not reliable as pressure cells instrumented on the interface between piled coal and the underlying soft soil do not work well, results from numerical methods alone are necessary to be doubly checked with one more method before they are extended to more complex cases. The generalized stress field in granular soils heap is analyzed with Rayleighe Ritz method. The problem is divided into two cases: case A without horizontal constraint on the base and case B with horizontal constraint on the base. In both cases, the displacement functions u(x, y) and v(x, y) are assumed to be cubic polynomials with 12 undetermined parameters, which will satisfy the Cauchy’s partial differential equations, generalized Hooke’s law and boundary equations. A function is built with the Rayleighe Ritz method according to the principle of minimum potential energy, and the problem is converted into solving two undetermined parameters through the variation of the function, while the other parameters are expressed in terms of these two parameters. By comparison of results from the Rayleighe Ritz method and numerical simulations, it is demonstrated that the Rayleighe Ritz method is feasible to study the generalized stress field in granular soils heap. Solutions from numerical methods are verified before being extended to more complicated cases.

关键词： Generalized stress field Rayleighe Ritz method Stress depression Variation of the function Principle of minimum potential energy

Effects of Solution Temperature on Tensile Properties ofSiC_w/2024Al Composite

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Journal of materials Science & Technology 1995年第4期11卷 291-294页

作者： mA, ZY LU, YX LUO, m bi, J ZHANG, YZ NE UNIV TECHNOL SHENYANG 110006PEOPLES R CHINA

The effects of solution (quench) temperature on the properties of SiCW/Al composite have been investigated using tensile tests. The experiments indicate that the solution temperature of the composite fabricated by P/m technique can be raised to 560 degrees C. The tensile strength of the composite is obviously dependent on solution (quench) temperature and the composite solutionized at 540 degrees C exhibits a maximum of tensile strength and elongation-to-failure. These results can be accounted for by the variation of the dislocation density in the composite.

关键词： metallic matrix composites