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Accurate quantification of the algebraic,multiplicative algebraic,and simultaneous iterative reconstruction techniques in ionosphere rebuilding based on the TIEGCM assessment

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Earth and Planetary Physics 2025年第1期9卷 117-126页

作者： ao qi HaiBing Ruan Institute of Space Weather Nanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Geospace Environment University of Science&Technology of ChinaChinese Academy of SciencesHefei 230026China

The algebraic reconstruction technique(ART),multiplicative algebraic reconstruction technique(MART),and simultaneous iterative reconstruction technique(SIRT)are computational methodologies extensively utilized within the field of computerized ionospheric tomography(CIT)to facilitate three-dimensional reconstruction of the ionospheric ***,reconstruction accuracy elicits recurrent disputes over its practical application,and people usually attribute this issue to incomplete and uneven coverage of the *** Thermosphere Ionosphere Electrodynamics General Circulation Model(TIEGCM)offers a reasonable physics-based ionospheric background and is widely utilized in ionospheric *** use the TIEGCM simulations as the targeted ionosphere because the current measurements are far from able to realistically reproduce the ionosphere in *** designations of satellite measurements are conducted to investigate the limiting performance of CIT methods in ionospheric *** to common practice,electron density distributions from outputs of the International Reference Ionosphere(IRI)model are used as the iterative initial value in CIT *** outcomes suggest that despite data coverage,iterative initial conditions also play an essential role in ionospheric *** particular,in the longitudinal sectors where the iterative initial height of the F2-layer peak electron density(hmF2)differs substantially from the background densities,none of the three CIT methods can reproduce the exact background *** hmF2 is close but the ionospheric F2-layer peak density(NmF2)is different between the targeted background and initial conditions,the MART performs better than the ART and SIRT,as evidenced by the correlation coefficients of MART being above 0.97 and those of ART and SIRT being below *** summary,this investigation reveals the potential uncertainties in traditional CIT reconstruction,particularly when reali

关键词： computerized ionospheric tomography International Reference Ionosphere model Thermosphere Ionosphere Electrodynamics General Circulation model ionosphere

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大学生“蹲考族”现象研究:理性人假设的视角

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广西师范大学学报（哲学社会科学版） 2025年第1期61卷 72-84页

作者：吴克明欧阳奥琪冯帮湖南师范大学教育科学学院湖南长沙410081 广东技术师范大学教育科学学院广东广州510665

近年来,大学生就业形势日益严峻,越来越多的失业大学生选择了“蹲考”。访谈和问卷调查发现,蹲考族表现为以自愿性蹲考为主、获得家庭支持、期望到体制内单位和大城市或家乡城市就业等特征。从理性人假设的角度来看,蹲考族现象的原因在... 详细信息

近年来,大学生就业形势日益严峻,越来越多的失业大学生选择了“蹲考”。访谈和问卷调查发现,蹲考族表现为以自愿性蹲考为主、获得家庭支持、期望到体制内单位和大城市或家乡城市就业等特征。从理性人假设的角度来看,蹲考族现象的原因在于蹲考的预期收益大于预期成本。严峻的就业形势降低了蹲考的机会成本,家庭的支持增强了蹲考族对经济成本和心理成本的承受能力;蹲考的预期收益包括更多的就业机会和更高的就业质量。蹲考是失业大学生为了实现预期收益最大化的理性选择,是一种人力资本投资行为,体现了一种自立自强的奋斗精神和人生态度,无法也无必要完全消除。应对蹲考族现象的解决思路在于:提高其考试成功概率,提高大学生就业率和就业质量。

关键词：蹲考族理性人假设预期收益预期成本人力资本投资大学生就业代际流动

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Experimental-based study of gear vibration characteristics incorporating the fractal topography of tooth surface

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International Journal of Mechanical System Dynamics 2023年第2期3卷 173-182页

作者： qi'ao Lei Lei Yuan Xin Yu Yunyun Sun Hongguang Li School of Power and Mechanical Engineering Wuhan UniversityWuhanHubei ProvinceChina State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghaiChina

Microscopic roughness is inevitable on the gear meshing surface,which is also a key parameter affecting the dynamic *** surface roughness exhibits self‐affine characteristics across *** explore the influence of surface fractal topography on the vibration amplitude of the gear system under different rotational speeds and loads,an experimental setup of spur gear transmission is *** fractal dimension and fractal roughness of the meshing surface are calculated by the power spectral density *** relationships between gear response and fractal parameters are revealed *** indicate that a rougher tooth surface,that is,a smaller fractal dimension or larger fractal roughness,corresponds to an intense vibration *** sensitivity of dynamic response to the tooth surface topography varies at different rotational speeds and *** low speed and light load conditions,the fractal dimension and fractal roughness have a more obvious influence on the dynamic response of the gear transmission *** the increase of speed and load,the macroworking conditions gradually become the main factor attributed to vibration amplitude.

关键词： spur gear fractal roughness vibration amplitude surface morphology

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The circular RNA circCPE regulates myoblast development by sponging miR-138

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Journal of Animal Science and Biotechnology 2022年第1期13卷 66-81页

作者： Wenxiu Ru ao qi Xuemei Shen Binglin Yue Xiaoyan Zhang Jian Wang Hui Cao Hong Chen Key laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100ShaanxiChina Shaanxi Kingbull Livestock co. LTDYangling 712100ShaanxiChina

Background:Skeletal muscle development,a long-term and complex process,is controlled by a set of the myogenic *** RNAs(circRNAs),a class of noncoding RNA,have been shown to regulate various biological *** studies indicate circRNAs may be involved in myogenesis,but the role and regulatory mechanism of circRNAs in myogenesis is largely *** the present study,circCPE was firstly found to promote the bovine myoblast proliferation and inhibit cell apoptosis and differentiation by influencing the expression of FOXC1 in a miR138-mediated *** in vivo experiments revealed that overexpression of circCPE attenuates skeletal muscle ***:We identified a novel circular RNA circCPE by analyzing circRNAs sequencing data of bovine muscle *** verification,RNase R treatment and Actinomycin D treatment confirmed the circular nature of circCPE in bovine *** assays showed that overexpression of circCPE could inhibit bovine myoblast apoptosis and differentiation,as well as facilitate cell ***,in vivo experiments revealed that overexpression of circCPE attenuates skeletal muscle *** consideration of circRNA action as miRNAs sponge,we found that circCPE harbors miR-138 binding sites and absorbed ***,the rescue experiments showed that the overexpression of circCPE can counteract the inhibitory effect of miR-138 on the cell proliferation and the accelerated effects on the differentiation and ***,we found that circCPE sequester the inhibitory effect of miR-138 on FOXC1 so as to involve in ***:Collectively,we constructed a novel circCPE/miR-138/FOXC1 regulatory network in bovine myogenesis,which further provide stronger evidence that circRNA involved in muscle development acting as miRNA sponge.

关键词： Apoptosis Bovine CircRNA Differentiation MiR-138 Proliferation

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MoS_(2)as a cocatalyst applied in advanced oxidation processes for enhancing degradation of organic pollutants:a review

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Tungsten 2024年第3期6卷 473-487页

作者： Ming-Hao Fan Cong-Hui Wang Xiang Yu Jun Ding ao-qi Xiao Yue Li Wei-Ya Huang School of Material Science and Engineering Henan Polytechnic UniversityJiaozuo 454001China School of Chemical and Printing-Dyeing Engineering Henan International Joint Laboratory of Rare Earth Composite MaterialsHenan University of EngineeringXinzheng 451191China School of Chemistry and Chemical Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Department of Chemical and Environmental Engineering University of CincinnatiCincinnati OH 45221-0012USA

Fenton technology,as a typical advanced oxidation processes(aoPs),can generate reactive oxygen species(ROS)of strong oxidation capacity to degrade organic pollutants,which has attracted wide ***,it is accompanied by the slow Fe^(3+)/Fe^(2+)cycle rate,easy to generate iron sludge and so ***,it has been proven that the inorganic cocatalysts represented by MoS_(2)can effectively solve the above ***,MoS_(2)can accelerate the activation of peroxy mono sulfate(PMS)and peroxodisulfate(PDS)by Fe^(2+).In this paper,MoS_(2)as the cocatalyst in H_(2)O_(2)+Fe^(2+),PMS+Fe^(2+)and PDS+Fe_(2+)were comprehensively ***,the cycling processes of Fe^(3+)/Fe^(2+)in different systems,the cocatalytic effect of MoS_(2)by the exposed active sites,the ROS generation mechanism as well as the microscopic mechanism during the reaction were elaborated *** results indicate that the reductive active sites on the surface of MoS_(2)can promote the regeneration of Fe^(2+)through the cycle between Fe^(3+)/Fe^(2+)and Mo^(4+)/Mo^(5+)/Mo^(6+).Thus,ROS such as·OH,SO_4^(·-)and ^(1)O_(2)with strong oxidizing property can be produced to improve the degradation efficiency of organic *** last,the challenges and developments of MoS_(2)cocatalysts in aoPs for practical applications were *** review contributes to a deeper understanding of the cocatalytic effect of two-dimensional metal sulfides in aoPs and facilitates their industrial application.

关键词： Cocatalyst Fenton reaction Degradation of organic pollutant Molybdenum disufide Reactive oxygen species

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性、爱、婚的三元统合:“人的生产”前提的人类学考察——从《基诺族传统爱情文化》说起

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思想战线 2009年第4期35卷 27-30页

作者：苗启明刘向民云南省社会科学院哲学研究所云南省世博旅游集团党工部

摩尔根《古代社会》断言原始时代没有爱情,恩格斯也对此作了肯定。新的田野调查材料和现代大脑科学的初步研究表明了这一结论的错误。事实表明,原始时代的爱情像文明时代的人一样强烈,其上限可远追到最早的伙婚制时代。它表明:性-爱-婚... 详细信息

摩尔根《古代社会》断言原始时代没有爱情,恩格斯也对此作了肯定。新的田野调查材料和现代大脑科学的初步研究表明了这一结论的错误。事实表明,原始时代的爱情像文明时代的人一样强烈,其上限可远追到最早的伙婚制时代。它表明:性-爱-婚的三元统合,是"人的生产"的人类学条件。所谓"血婚制"作为一种婚姻制度并不存在。

关键词：爱情性-爱-婚伙婚制爱情的上限

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Generating colorful carrot germplasm through metabolic engineering of betalains pigments

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Horticulture Research 2023年第4期10卷 63-70页

作者： Yuan-Jie Deng ao-qi Duan Hui Liu Ya-Hui Wang Rong-Rong Zhang Zhi-Sheng Xu Ai-Sheng Xiong National Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural University1 WeigangNanjing 210095China

Betalains are tyrosine-derived plant pigments exclusively found in the Caryophyllales order and some higher fungi and generally classified into two groups:red-violet betacyanins and yellow-orange *** attract great scientific and economic interest because of their relatively simple biosynthesis pathway,attractive colors and health-promoting ***-expressing two core genes BvCYP76AD1 and BvDODA1 with or without a glycosyltransferase gene MjcDOPA5GT allowed the engineering of carrot(an important taproot vegetable)to produce a palette of unique *** highest total betalains content,943.2μg·g^(−1) DW,was obtained in carrot taproot transformed with p35S:RUBY which produces all of the necessary enzymes for betalains ***-specific production of betalains slightly relieved tyrosine consumption revealing the possible bottleneck in betalains ***,a unique volcano-like phenotype in carrot taproot cross-section was created by vascular cambium-specific production of *** betalains-fortified carrot in this study is thus anticipated to be used as functional vegetable and colorful carrot germplasm in breeding to promote health.

关键词： germplasm breeding orange

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Integrative genome,transcriptome,microRNA,and degradome analysis of water dropwort(Oenanthe javanica)in response to water stress

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Horticulture Research 2021年第1期8卷 3396-3412页

作者： Jie-Xia Liu qian Jiang Jian-Ping Tao Kai Feng Tong Li ao-qi Duan Hao Wang Zhi-Sheng Xu Hui Liu Ai-Sheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural University1 Weigang210095 NanjingChina

Water dropwort(Liyang Baiqin,Oenanthe javanica(BI.)DC.)is an aquatic perennial plant from the Apiaceae family with abundant protein,dietary fiber,vitamins,and *** usually grows in wet soils and can even grow in ***,whole-genome sequencing of *** via HiSeq 2000 sequencing technology was reported for the first *** genome size was 1.28 Gb,including 42,270 genes,of which 93.92%could be functionally *** online database of the whole-genome sequences of water dropwort,Water dropwortDB,was established to share the results and facilitate further research on ***(database homepage:http://***/waterdropwortdb).Water dropwortDB offers whole-genome and transcriptome sequences and a Basic Local Alignment Search *** analysis with other species showed that the evolutionary relationship between *** and Daucus carota was the ***-five gene families of *** were found to be expanded,and some genetic factors(such as genes and miRNAs)related to phenotypic and anatomic differentiation in *** under different water conditions were further *** miRNA and target gene pairs(miR408 and Oja15472,miR171 and Oja47040)were remarkably regulated by water *** obtained reference genome of *** provides important information for future work,thus making in-depth genetic breeding and gene editing *** present study also provides a foundation for the understanding of the *** response to water stress,including morphological,anatomical,and genetic differentiation.

关键词： vitamin stress analysis

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汽车“身份”唯一性综合检验研究(Ⅰ)

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刑事技术 2019年第5期44卷 403-409页

作者：敖琪华东政法大学

汽车作为现代交通工具,其整车产品信息、注册信息和使用信息,构成了一辆汽车区别于其它汽车的唯一“身份”特征信息。这些信息成为检验涉案或可疑汽车唯一“身份”的客观依据,在查处盗窃、抢劫、走私、套牌和拼装等车辆犯罪活动中发挥... 详细信息

汽车作为现代交通工具,其整车产品信息、注册信息和使用信息,构成了一辆汽车区别于其它汽车的唯一“身份”特征信息。这些信息成为检验涉案或可疑汽车唯一“身份”的客观依据,在查处盗窃、抢劫、走私、套牌和拼装等车辆犯罪活动中发挥不可替代的作用。本文根据整车型号、车辆识别代号(VIN)、发动机号码、变速箱号、安全气囊号等编制规则,研究可疑汽车“身份”唯一性的综合检验技术。

关键词：汽车“身份” 唯一性综合检验

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含笑小孢子的发生、雄配子体的发育及其系统学意义

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广西植物 2007年第6期27卷 836-839页

作者：敖成齐温州大学生命与环境科学学院浙江温州325027

含笑的花药具4个小孢子囊,花药壁由表皮、药室内壁、3～6层中层和绒毡层组成。绒毡层细胞在发育后期由单核分裂为2核,原位解体,为腺质型;小孢子母细胞在减数分裂过程中胞质分裂为同时型,小孢子四分体为四面体型,也有左右对称型的;成熟... 详细信息

含笑的花药具4个小孢子囊,花药壁由表皮、药室内壁、3～6层中层和绒毡层组成。绒毡层细胞在发育后期由单核分裂为2核,原位解体,为腺质型;小孢子母细胞在减数分裂过程中胞质分裂为同时型,小孢子四分体为四面体型,也有左右对称型的;成熟花粉为3细胞型。在前人对含笑小孢子发生和雄配子体发育的观察描述基础上,丰富了含笑的胚胎学资料,并对其系统学意义进行了探讨。

关键词：含笑小孢子发生雄配子体花药壁系统学

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