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Salinity fronts shape spatial patterns in zooplankton distribution in Hangzhou Bay

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Acta Oceanologica Sinica 2024年第6期43卷 96-106页

作者： Yepeng Xu yiqi Wang Lin Zhan Yijun Ou Kangning Jia Ming Mao Xuyu Zhu Zhibing Jiang Yuanli Zhu Wei Huang Ping Du Jiangning Zeng Lu Shou Feng Zhou Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province Hangzhou 310012China State Key Laboratory of Satellite Ocean Environment Dynamics Ministry of Natural ResourcesHangzhou 310012China Nantong Marine Environmental Monitoring Center Ministry of Natural ResourcesNantong 226002China Key Laboratory of Ocean Space Resource Management Technology Ministry of Natural ResourcesHangzhou 310012China Observation and Research Station of Marine Ecosystem in the Yangtze River Delta Ministry of Natural ResourcesZhoushan 316021China

Ocean fronts play important roles in nutrient transport and in the shaping ecological *** zones in small bays are typically small in scale,have a complex structure,and they are spatially and temporally variable,but there are limited data on how biological communities respond to this *** Bay,a mediumsized estuary in China,is an ideal place in which to study the response of plankton to small-scale ocean fronts,because three water masses(Qiantang River Diluted Water,Changjiang River Diluted Water,and the East China Sea current) converge here and form dynamic salinity fronts throughout the *** investigate zooplankton communities,and temperature,salinity and chlorophyll a(Chl a) in Hangzhou Bay in June(wet perio d) and December(dry period) of 2.2. and examine the dominant environmental factors that affect zooplankton community spatial *** then match the spatial distributions of zooplankton communities with those of salinity fronts.S alinity is the most important explanatory variable to affect zooplankton community spatial variability during both wet and dry periods,in that it contributes>60% of the variability in community ***,the spatial distributions of zooplankton match well with salinity *** December,with weaker Qiantang River Diluted Water and a stronger secondary Changjiang River Plume,zooplankton communities occur in moderate salinity(MS,salinity range 15.6±2.2. and high salinity(HS,2..4±1.7) regions,and their ecological boundaries closely match the Qiantang River Diluted Water *** June,different zooplankton communities occur in low salinity(LS,3.9±1.0),MS(11.7±3.6) and HS(2..3±1.9) *** the LS region occurs abnormally in the central bay rather than its apex because of the anomalous influence of rising and falling tides during the sampling perio d,the ecological boundaries still match salinity ***-salinity or brackish-water zooplankter taxa are relatively more abunda

关键词： zooplankton spatial distribution salinity fronts Hangzhou Bay

Isobavachromene ameliorates insulin resistance via inactivating the MAPK/NF-κB signaling pathway

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Food Science and Human Wellness 2024年

作者： Zhenhua Liu Zhenhua Liang Lanting Xu Jiajia Yuan yiqi Li Wenyi Kang Yan Zhang Bin Cong National R & D Center for Edible Fungus Processing Technology， Henan University Joint International Research Laboratory of Food & Medicine Resource Function College of Agriculture， Henan University Shenzhen Research Institute of Henan University Hebei Key Laboratory of Forensic Medicine， College of Forensic Medicine， Hebei Medical University Hebei Food Safety Key Laboratory， Hebei Food Inspection and Research Institute

Inflammation caused by obesity， particularly in adipose tissue and the liver， can lead to insulin resistance (IR) and trigger type 2.diabetes (T2.M). It is crucial to identify therapeutic agents that alleviate IR by reducing inflammation. Here， we report that isobavachromene (IB)， a flavonoid derived from Psoralea corylifolia Linn.， ameliorates IR in 3T3-L1 adipocytes by inhibiting the MAPK/NF-κB signaling pathway. We first found that IB could promote glucose uptake in 3T3-L1 adipocytes by activating the PI-3K/Akt signaling pathway and was more effective than the positive control sodium orthovanadate at concentrations ranging from 2. to 100 μmol/L. Additionally， IB inhibited RAW2.4.7 macrophage infiltration into 3T3-L1 adipocytes and suppressed the secretion of inflammatory factors from RAW2.4.7 macrophages， as well as the phosphorylation levels of key proteins (NF-κB P65， ERK1/2. JNK， and P38) in the NF-κB and MAPK signaling pathways. In summary， IB improves glucose uptake in IR adipocytes， activates the PI-3K/Akt signaling pathway， inhibits the JNK and NF-κB inflammatory signaling pathways， and reduces adipocyte inflammation， thereby improving of IR in 3T3-L1 adipocytes.

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“全球艺术”的提出与探讨——汉斯·贝尔廷在现代主义艺术史之后的视域延伸

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南京艺术学院学报（美术与设计） 2024年第3期 134-138,I0003页

作者：胡祎祺北京大学艺术学院北京100871

随着信息时代的全球化的到来,在当代艺术中出现一种“全球转向”的趋势。“现代艺术”“当代艺术”以及“世界艺术”概念范畴现存的局限性,使其无法解决当下某些区域新出现的艺术与历史断裂的问题。在批判与反思的基础上,汉斯·贝尔廷... 详细信息

随着信息时代的全球化的到来,在当代艺术中出现一种“全球转向”的趋势。“现代艺术”“当代艺术”以及“世界艺术”概念范畴现存的局限性,使其无法解决当下某些区域新出现的艺术与历史断裂的问题。在批判与反思的基础上,汉斯·贝尔廷提出“全球艺术”概念,这是他在全球语境下以多种视角重塑艺术史书写的新尝试。

关键词：全球艺术世界艺术现代艺术史汉斯·贝尔廷

Cdc42.deletion yielded enamel defects by disrupting mitochondria and producing reactive oxygen species in dental epithelium

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Genes & Diseases 2024年第5期11卷 335-349页

作者： Jinxuan Zheng Rongcheng Yu yiqi Tang Sihui Su Sainan Wang Chenxi Liao Xuecong Li Jiabin Liao Dongsheng Yu Tingting Ai Wei Zhao Vicky Yau Chufeng Liu Liping Wu Yang Cao Hospital of Stomatology Guanghua School of StomatologyGuangdong Provincial Key Laboratory of StomatologySun Yat-sen UniversityGuangzhouGuangdong 510055China Guangdong Provincial Key Laboratory of Oral Diseases GuangzhouGuangdong 510055China Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China Department of Oral and Maxillofacial Surgery University at BuffaloBuffaloNY 14214USA Department of Orthodontics Stomatological HospitalSouthern Medical UniversityGuangzhouGuangdong 510280China

Developmental defects of enamel are common due to genetic and environmental factors before and after ***42.a Rho family small GTPase,regulates prenatal tooth development in ***,its role in postnatal tooth development,especially enamel formation,remains ***,we investigated Cdc42.functions in mouse enamel development and tooth repair after ***42.showed highly dynamic temporospatial patterns in the developing incisors,with robust expression in ameloblast and odontoblast ***,epithelium-specific Cdc42.deletion resulted in enamel defects in *** differentiation was inhibited,and hypomineralization of enamel was observed upon epithelial Cdc42.*** analysis showed that abnormal mitochondrial components,phosphotransferase activity,and ion channel regulator activity occurred in the Cdc42.mutant dental *** oxygen species accumulation was detected in the mutant mice,suggesting that abnormal oxidative stress occurred after Cdc42.***,Cdc42.mutant mice showed delayed tooth repair and generated less calcified *** dysfunction and abnormal oxygen consumption were evidenced by reduced Apool and Timm8a1 expression,increased Atp5j2.levels,and reactive oxygen species overproduction in the mutant repair ***-specific Cdc42.deletion attenuated ERK1/2.signaling in the labial cervical *** Sox2.expression in the mutant labial cervical loop after clipping might lead to delayed tooth *** findings suggested that mitochondrial dysfunction,up-regulated oxidative stress,and abnormal ion channel activity may be among multiple factors responsible for the observed enamel defects in Cdc42.mutant ***,Cdc42.exerts multidimensional and pivotal roles in enamel development and is particularly required for ameloblast differentiation and enamel matrix formation.

关键词： Cdc42 Enamel defects Mitochondrial dysfunction Rho GTPase Tooth repair

A comprehensive survey of federated transfer learning: challenges, methods and applications

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Frontiers of Computer Science 2024年第06期18卷 186356-186356页

作者： GUO Wei ZHUANG Fuzhen ZHAN Xiao TONG yiqi DONG Jin Institute of Artificial Intelligence Beihang University SKLSDE School of Computer Science Beihang University School of Computer Science and Technology Shandong University Beijing Academy of Blockchain and Edge Computing

Federated learning (FL) is a novel distributed machine learning paradigm that enables participants to collaboratively train a centralized model with privacy preservation by eliminating the requirement of data sharing. In practice, FL often involves multiple participants and requires the third party to aggregate global information to guide the update of the target participant. Therefore, many FL methods do not work well due to the training and test data of each participant may not be sampled from the same feature space and the same underlying distribution. Meanwhile, the differences in their local devices (system heterogeneity), the continuous influx of online data (incremental data), and labeled data scarcity may further influence the performance of these methods. To solve this problem, federated transfer learning (FTL), which integrates transfer learning (TL) into FL, has attracted the attention of numerous researchers. However, since FL enables a continuous share of knowledge among participants with each communication round while not allowing local data to be accessed by other participants, FTL faces many unique challenges that are not present in TL. In this survey, we focus on categorizing and reviewing the current progress on federated transfer learning, and outlining corresponding solutions and applications. Furthermore, the common setting of FTL scenarios, available datasets, and significant related research are summarized in this survey.

关键词： federated transfer learning federated learning transfer learning survey

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新媒体时代的艺术策展观念

美术 2024年第6期 60-63页

作者：胡祎祺北京大学中国美术馆

新媒体使得艺术形式得到丰富和拓展,也给传统的艺术世界带来诸多挑战。技术的发展与新兴媒介的应用屡次突破学科边界,给当代艺术观念和策展模式创造了新的可能。本文以策展观念的变迁为视角,主要研究新媒体艺术在机构层面的发展与探索;... 详细信息

新媒体使得艺术形式得到丰富和拓展,也给传统的艺术世界带来诸多挑战。技术的发展与新兴媒介的应用屡次突破学科边界,给当代艺术观念和策展模式创造了新的可能。本文以策展观念的变迁为视角,主要研究新媒体艺术在机构层面的发展与探索;同时,关注在全球数字媒体发展的时代,新媒体艺术展览如何跨越媒介,如何通过艺术思考人类的未来。

关键词：新媒体艺术与科学策展

基于WRF模式的四川省凉山州地区风能资源可开发区域研究

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太阳能学报 2024年第2期45卷 158-163页

作者：叶瑶袁熹王逸奇四川省气象服务中心成都610072 东方电气(成都)工程设计咨询有限公司成都611731 东方电气风电股份有限公司德阳618000

利用MERRA2.分析数据驱动WRF模式,对四川凉山州地区2.2.年全年进行风资源模拟分析,并用凉山州地区典型测风塔数据对模拟结果进行检验,并进行详细地风资源分析,再根据风电场开发8%基准内部收益率反推可开发风能资源的区域分布。结果表明... 详细信息

利用MERRA2.分析数据驱动WRF模式,对四川凉山州地区2.2.年全年进行风资源模拟分析,并用凉山州地区典型测风塔数据对模拟结果进行检验,并进行详细地风资源分析,再根据风电场开发8%基准内部收益率反推可开发风能资源的区域分布。结果表明:凉山州大部分地区100 m高度年平均风速在5 m/s以上,风速极大值一般位于山脊,凉山州风能最好的区域主要集中在会东县和宁南县。凉山州典型区域内均表现出受西南季风影响的特征,即冬、春季节风大,夏、秋季节风小,主风向呈强西南风状态,且风功率密度变化规律与风速的变化规律基本一致。凉山州山地区域可开发风能资源的平均风功率密度临界值为2.8 W/m^(2.,这些区域主要集中在会理、会东、宁南、布拖、木里和盐源县境内。可开发区域分布图对指导凉山州地区风能开发提供科学参考。

关键词：风速风功率密度内部收益率 WRF模式凉山州

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明治经验的虚像与实景:吴汝纶壬寅东游的另一种观察

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安徽史学 2024年第3期 116-124,168页

作者：苗祎琦中国人民大学历史学院北京100086

清末清廷的文教改革多参照日本。其中,如何调和新旧学术、创建国民教育体系是一大关节,亦是赴日考察教育者的主要关心所在。在晚清众多的赴日教育考察中,吴汝纶的壬寅东游无出其右。其间,日人出于不同立场与知识背景的建言,呈现出聚讼... 详细信息

清末清廷的文教改革多参照日本。其中,如何调和新旧学术、创建国民教育体系是一大关节,亦是赴日考察教育者的主要关心所在。在晚清众多的赴日教育考察中,吴汝纶的壬寅东游无出其右。其间,日人出于不同立场与知识背景的建言,呈现出聚讼纷纭之景象。围绕儒家道德理想与西洋伦理学、传统汉学与近代“普通知识”,德育与智育领域的扰攘纷争,折射出明治后期日本在东西两洋学术之间的纠结。通过反思与调适明治日本的兴学经验,吴汝纶形成了改革全国文教的独特构想,坚定了以古文存旧学的决心。在晚清文教改革参照“日本渠道”这一表象的背后,展现彼时日本文教界的“众声喧哗”,同时观照中方所采取的应对、改造策略,不仅有助于揭示“作为经验”的明治日本的实景,也有助于重思晚清文教改革的历程。

关键词：吴汝纶汉学德育普通知识明治日本

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中国碳排放脱钩效应、时空特征与驱动因素

生态学报 2024年第6期44卷 2228-2243页

作者：王奕淇黄涵祝长安大学经济与管理学院西安710064

“双碳”目标使中国面临巨大的碳减排压力,寻求一条低碳转型之路已成为中国面临的挑战,而揭示经济增长与碳排放之间的脱钩关系,是中国寻求低碳经济发展的关键突破点。基于IPCC碳核算方法和Tapio脱钩模型,对中国经济增长与碳排放的脱钩... 详细信息

“双碳”目标使中国面临巨大的碳减排压力,寻求一条低碳转型之路已成为中国面临的挑战,而揭示经济增长与碳排放之间的脱钩关系,是中国寻求低碳经济发展的关键突破点。基于IPCC碳核算方法和Tapio脱钩模型,对中国经济增长与碳排放的脱钩效应以及时空特征进行探讨,并利用IDA-PDA综合分析法对碳排放脱钩效应的驱动因素进行分解。结果表明:(1)2.05—2.19年,中国整体的碳排放脱钩指数呈波动下降趋势,以“弱脱钩”为主,脱钩状态良好。(2.中国东部和中部地区碳排放脱钩状态较好,在2.15—2.19年达到强脱钩;西部地区虽仍处于弱脱钩阶段,但碳排放脱钩指数显著降低;同时,中国各省份间脱钩状态差别较大,碳排放脱钩指数总体呈西北高、东南低的分布格局。(3)对于驱动因素的贡献度,要素替代和技术进步是促进中国碳排放脱钩的关键因素,经济水平是抑制中国碳排放脱钩最主要的因素。能源结构、效率变动、人口规模对中国碳排放脱钩主要表现为抑制作用。(4)对于地区的贡献度,2.05—2.10年,东部地区对中国碳排放脱钩的抑制作用最强;2.10—2.12.,东部地区对中国碳排放脱钩的抑制作用逐渐减小,西部地区对中国碳排放脱钩的抑制作用逐渐增强;2.12.2.19年,三大地区对中国碳排放脱钩的作用不稳定,变化较大。

关键词：碳排放脱钩 IDA-PDA方法驱动因素时空特征