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palaeogene Sandstones of the Manika plateau in Kolwezi (DR Congo): Sedimentological and Geochemical Characterization, provenance, palaeoalteration and Tectonic Context

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Open Journal of Geology 2024年第7期14卷 705-722页

作者： pierre T. Mashala Faidance Mashauri Samy M. Malango christian K. Mulopwe Department of Geology University of Lubumbashi Haut-Katanga DR Congo Department of Geology University of Ul Haut-Ul DR Congo Department of Geology and Technology University of Kolwezi Lualaba DR Congo

This work presents a study of the paleogene sandstones of the Manika plateau in Kolwezi, DR Congo. These sandstones belong to the “Grès polymorphes” group, which together with the overlying “Sables ocre” makes up the Kalahari Supergroup. Sedimentological and geochemical analyses have enabled us to characterize these sandstones and determine their origin, the conditions of their formation and the tectonic context in which they were developed. The results show that the sandstones are quartz arenites with a high level of mineralogical, textural and chemical maturity. They are recycled sandstones, formed in an intracratonic sedimentary basin, in the context of a passive continental margin, after a long fluvial transport of sediments. These sandstones initially come from intense alteration of magmatic rocks with felsic composition, mainly tonalite-trondhjemite-granodiorite (TTG) complexes, in hot, humid palaeoclimatic conditions and oxidizing environments.

关键词： Sandstone Sedimentology Geochemistry palaeoalteration Tectonic Context Manika plateau DR Congo

Corrective Effect of the Angle of Incidence of the Magnetic Field Intensity on the performance (Series and Shunt Resistances) of a Bifacial Silicon Solar Cell

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Energy and power Engineering 2024年第9期16卷 313-323页

作者： Idrissa Sourabié Mahamadi Savadogo Boubacar Soro Ramatou Saré christian Zoundi Martial Zoungrana Issa Zerbo Laboratoire de Chimie Analytique de Physique Spatiale et nergtique (L@CAPSE) Ecole Doctorale Sciences et Technologies Universit Norbert ZONGO Koudougou Burkina Faso Laboratoire dEnergies Thermiques Renouvelables (L.E.T.RE) Ecole Doctorale Sciences et Technologies Universit Joseph KI-ZERBO Ouagadougou Burkina Faso

This article presents a three-dimensional analysis of the impact of the angle of incidence of the magnetic field intensity on the electrical performance (series resistance, shunt resistance) of a bifacial polycrystalline silicon solar cell. The cell is illuminated simultaneously from both sides. The continuity equation for the excess minority carriers is solved at the emitter and at the depth of the base respectively. The analytical expressions for photocurrent density, photovoltage, series resistance and shunt resistance were deduced. Using these expressions, the values of the series and shunt resistances were extracted for different values of the angle of incidence of the magnetic field intensity. The study shows that as the angle of incidence increases, the slopes of the minority carrier density for the two modes of operation of the solar cell decrease. This is explained by a drop in the accumulation of carriers in the area close to the junction due to the fact that the Lorentz force is unable to drive the carriers towards the lateral surfaces due to the weak action of the magnetic field, which tends to cancel out as the incidence angle increases, and consequently a drop in the open circuit photovoltage. This, in turn, reduces the Lorentz force. These results predict that the p-n junction of the solar cell will not heat up. The study also showed a decrease in series resistance as the incidence angle of the magnetic field intensity increased from 0 rad to π/2 rad and an increase in shunt resistance as the incidence angle increased. His behaviour of the electrical parameters when the angle of incidence of the field from 0 rad to π/2 rad shows that the decreasing magnetic field vector tends to be collinear with the electron trajectory. This allows them to cross the junction and participate in the external current. The best orientation for the Lorentz force is zero, in which case the carriers can move easily towards the junction.

关键词： Angle of Incidence Magnetic Field Intensity Bifacial polycrystalline Silicon Solar Cell Series Resistance Shunt Resistance

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好戏不止一场

摩托车 2024年第8期 86-95页

作者：李琳 christian Bourget(图) 不详

哈萨克斯坦大奖赛的推迟(现在据说还要取消了,只是替代方案还未确定)为笔者送来了四周的春假,春假中车手市场地动山摇,春假回来老杜一号的统治依然稳如泰山。乾坤大挪移继穆杰罗之后豪尔赫·马丁和马克·马奎兹相继官宣去向,与之联动的... 详细信息

哈萨克斯坦大奖赛的推迟(现在据说还要取消了,只是替代方案还未确定)为笔者送来了四周的春假,春假中车手市场地动山摇,春假回来老杜一号的统治依然稳如泰山。乾坤大挪移继穆杰罗之后豪尔赫·马丁和马克·马奎兹相继官宣去向,与之联动的几位重要车手也在这个漫长的春假中官宣了去向,杜卡迪的选秀闹剧终于正式结束。豪尔赫·马丁明年的队友并不是马弗里克·维涅埃里斯,而是阿普利亚心心念念的意大利人马可·贝塞奇;马弗里克·维涅埃里斯将会加盟Tech3骑上KTM赛车,而他的队友将是被马克·马奎兹顶掉席位的埃尼亚·巴斯塔尼尼。

关键词：替代方案乾坤大挪移选秀哈萨克斯坦阿普利亚

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热火朝天

摩托车 2024年第9期 86-95页

作者：李琳 christian Bourget(图) 不详

英国站——时不我待总冠军的争夺不仅没有结束,甚至开启了更加复杂和白热化的新篇章。转会大戏进入尾声夏休期间,更多的2025年席位确定,也有人至今没有去处。有些确认的席位是正式的官宣,比如Trackhouse车队和劳尔·费尔南德斯、本田厂... 详细信息

英国站——时不我待总冠军的争夺不仅没有结束,甚至开启了更加复杂和白热化的新篇章。转会大戏进入尾声夏休期间,更多的2025年席位确定,也有人至今没有去处。有些确认的席位是正式的官宣,比如Trackhouse车队和劳尔·费尔南德斯、本田厂队和乔安·米尔,以及雅马哈厂队和亚历克斯·林斯。

关键词：总冠军劳尔亚历克斯转会席位新篇章

Calculating the Crystallite Size of Microsorum scolopendria AgCl Nanoparticles and Their Biological Activities

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Journal of Biomaterials and Nanobiotechnology 2024年第2期15卷 25-37页

作者： christian Nanga Chick Mohammed Mahdaly phillippe Belle Ebanda Kedi Kiuchi Sonoko Francois Eya’ane Meva Department of Materials and Life Sciences Faculty of Science and Technology Sophia University Tokyo Japan Laboratory of Innovative Nanostructured Material (NANO: C) Faculty of Medicine and Pharmaceutical Sciences The University of Douala Douala Cameroon Nanosciences African Network iThemba LABS-National Research Foundation Cape Town South Africa Department of Studies in Human Life Sciences Otsuma Womens University Tokyo Japan Institute for Inorganic Chemistry and Structural Chemistry Heinrich-Heine-University Dsseldorf Dsseldorf Germany

In this work, AgCl nanoparticles were synthesized from Microsorum scolopendria (MS) aqueous extract and AgNO3 solution. preliminary confirmation was a color change from a light brown to a dark-colored solution and a UV-Vis spectra surface plasmon resonance peak at 427 nm. Measured vibrational frequencies at 1713 cm1 and 1030 cm1 for C-O stretching of carboxylic acid or aliphatic ketone, and 1547 cm1 for possibly N-O stretching of nitro compounds by Infrared (FTIR) analysis explain the possible biomaterial electronegative species or functional groups responsible for the reduction of Ag ( 1) to Ag (0) for the formation of MS-AgCl nanoparticles. XRD analysis studies revealed that these particles contained face-centered cubic crystallites of metallic AgCl of 100 % with an average calculated crystallite size range of 30.34 nm (SD = 5.10 nm) by Scherrers equation and a calculated crystallite size of 66.04 nm with a lattice strain of 0.00175 nm by Williamson Hall equation. The measured albumin denaturing activity of MS-AgCl nanoparticles gave an IC50 value of 26.70 g/mL and 1.35 g/mL for the positive control diclofenac. Additionally, the measured ability of phosphomolybdate complex formation, the antioxidant IC value of MS-AgCl nanoparticles was 35.29 g/mL, and positive control ascorbic acid was 13.91 g/mL. In all, using MS fern frond aqueous extracts, this preliminary work confirms MS-AgCl nanoparticles as potential therapeutic agents for oxidative stress, inflammatory problems, and related diseases.

关键词： Microsorum scolopendria SNps IR UV-Vis Antioxidant

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大势或见明朗

摩托车 2024年第11期 84-95页

作者：李琳 christian Bourget(图) 不详

印度尼西亚站—破除魔咒曼达利卡赛道,属于豪尔赫·马丁的魔咒,也是豪尔赫·马丁最终破除的魔咒。吃一堑在哪里跌倒,就在哪里再摔一次,然后爬起来。按照豪尔赫·马丁和弗朗切斯科·巴尼亚亚一人一站抽象整活的安排,本站,去年豪尔赫·马... 详细信息

印度尼西亚站—破除魔咒曼达利卡赛道,属于豪尔赫·马丁的魔咒,也是豪尔赫·马丁最终破除的魔咒。吃一堑在哪里跌倒,就在哪里再摔一次,然后爬起来。按照豪尔赫·马丁和弗朗切斯科·巴尼亚亚一人一站抽象整活的安排,本站,去年豪尔赫·马丁整了惊天大活儿的地方,又该轮到他整活儿。于是杆位发车的豪尔赫·马丁在冲刺赛第一圈便在十六号弯送上了自己的抽象整活。当所有人都说你这站可不能再出问题了啊的时候,你出了问题;另一个意思就是,当所有人都等着看你这站笑话的时候,你闹了个大笑话。

关键词：爬起来等着看印度尼西亚冲刺所有人魔咒

Assessing the impact of concurrent high-fructose and highsaturated fat diets on pediatric metabolic syndrome:A review

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World Journal of Clinical pediatrics 2024年第2期13卷 62-79页

作者： Manuel Alejandro Vargas-Vargas Marcela González-Montoya Olin Torres-Isidro Claudia Isabel García-Berumen Omar Ortiz-Avila Elizabeth Calderón-Cortés christian Cortés-Rojo Instituto de Investigaciones Químico–Biológicas Universidad Michoacana de San Nicolás de HidalgoMorelia 58030MichoacánMexico Facultad de Enfermería Universidad Michoacana de San Nicolás de HidalgoMorelia 58020MichoacánMexico

High-saturated fat(HF)or high-fructose(HFr)consumption in children predispose them to metabolic syndrome(MetS).In rodent models of MetS,diets containing individually HF or HFr lead to a variable degree of ***,simultaneous intake of HF plus HFr have synergistic effects,worsening MetS *** children,the effects of HF or HFr intake usually have been addressed ***,we have reviewed the outcomes of HF or HFr diets in children,and we compare them with the effects reported in *** humans,HFr intake causes increased lipogenesis,hypertriglyceridemia,obesity and insulin *** the other hand,HF diets promote low grade-inflammation,obesity,insulin *** the deleterious effects of simultaneous HF plus HFr intake on MetS development in rodents,there is little information about the combined effects of HF plus HFr intake in *** aim of this review is to warn about this issue,as individually addressing the effects produced by HF or HFr may underestimate the severity of the outcomes of Western diet intake in the pediatric *** consider that this is an alarming issue that needs to be assessed,as the simultaneous intake of HF plus HFr is common on fast food menus.

关键词： Fructose Saturated fat Metabolic syndrome Insulin resistance Type 2 diabetes Ultra processed foods Children Obesity Dyslipidemia Non-alcoholic fatty liver disease

预防LLM赋能的智能聊天机器人全生命周期能源和碳足迹剧增（英文）

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Engineering 2024年第9期 202-210页

作者：蒋鹏 christian Sonne 李望良 Fengqi You Siming You Department of Industrial Engineering and Management Business School Sichuan University Department of Ecoscience Aarhus University Chinese Academy of Sciences Key Laboratory of Green process and Engineering Institute of Process Engineering Chinese Academy of Sciences Systems Engineering Cornell University James Watt School of Engineering University of Glasgow

Intelligent chatbots powered by large language models(LLMs) have recently been sweeping the world,with potential for a wide variety of industrial applications. Global frontier technology companies are feverishly participating in LLM-powered chatbot design and development, providing several alternatives beyond the famous ChatGpT. However, training, fine-tuning, and updating such intelligent chatbots consume substantial amounts of electricity, resulting in significant carbon emissions. The research and development of all intelligent LLMs and software, hardware manufacturing(e.g., graphics processing units and supercomputers), related data/operations management, and material recycling supporting chatbot services are associated with carbon emissions to varying extents. Attention should therefore be paid to the entire life-cycle energy and carbon footprints of LLM-powered intelligent chatbots in both the present and future in order to mitigate their climate change impact. In this work, we clarify and highlight the energy consumption and carbon emission implications of eight main phases throughout the life cycle of the development of such intelligent chatbots. Based on a life-cycle and interaction analysis of these phases,we propose a system-level solution with three strategic pathways to optimize the management of this industry and mitigate the related footprints. While anticipating the enormous potential of this advanced technology and its products, we make an appeal for a rethinking of the mitigation pathways and strategies of the life-cycle energy usage and carbon emissions of the LLM-powered intelligent chatbot industry and a reshaping of their energy and environmental implications at this early stage of development.

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A Deep-Learning and Transfer-Learning Hybrid Aerosol Retrieval Algorithm for FY4-AGRI:Development and Verification over Asia

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Engineering 2024年第7期38卷 164-174页

作者： Disong Fu Hongrong Shi christian AGueymard Dazhi Yang Yu Zheng Huizheng Che Xuehua Fan Xinlei Han Lin Gao Jianchun Bian Minzheng Duan Xiangao Xia Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 10029China Key Laboratory of Cloud-precipitation physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Solar Consulting Services ColebrookNH 03576USA School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin 150006China State Key Laboratory of Severe Weather&Key Laboratory of Atmospheric Chemistry Institute of Atmospheric Composition and Environmental MeteorologyChinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081China National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing100085China Key Laboratory of Compound and Chained Natural Hazards Dynamics Ministry of Emergency Management of ChinaBeijing 100085China h National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081China University of Chinese Academy of Sciences Beijing 100049China

The Advanced Geosynchronous Radiation Imager(AGRI)is a mission-critical instrument for the Fengyun series of *** acquires full-disk images every 15 min and views East Asia every 5 min through 14 spectral bands,enabling the detection of highly variable aerosol optical depth(AOD).Quantitative retrieval of AOD has hitherto been challenging,especially over *** this study,an AOD retrieval algorithm is proposed that combines deep learning and transfer *** algorithm uses core concepts from both the Dark Target(DT)and Deep Blue(DB)algorithms to select features for the machinelearning(ML)algorithm,allowing for AOD retrieval at 550 nm over both dark and bright *** algorithm consists of two steps:①A baseline deep neural network(DNN)with skip connections is developed using 10 min Advanced Himawari Imager(AHI)AODs as the target variable,and②sunphotometer AODs from 89 ground-based stations are used to fine-tune the DNN ***-of-station validation shows that the retrieved AOD attains high accuracy,characterized by a coefficient of determination(R2)of 0.70,a mean bias error(MBE)of 0.03,and a percentage of data within the expected error(EE)of 70.7%.A sensitivity study reveals that the top-of-atmosphere reflectance at 650 and 470 nm,as well as the surface reflectance at 650 nm,are the two largest sources of uncertainty impacting the *** a case study of monitoring an extreme aerosol event,the AGRI AOD is found to be able to capture the detailed temporal evolution of the *** work demonstrates the superiority of the transfer-learning technique in satellite AOD retrievals and the applicability of the retrieved AGRI AOD in monitoring extreme pollution events.

关键词： Aerosol optical depth Retrieval algorithm Deep learning Transfer learning Advanced Geosynchronous Radiation Imager