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中波自立式宽频带天线在低频率大功率中的应用

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广播与电视技术 2015年第10期42卷 106-110页

作者：黄迎召河南省新闻出版广电局104台河南450003

为了解决传统中波天线在建设高度、占地面积等方面的缺点,本文进行了中波自立式宽频带天线的可行性研究,特别是在低频率、大功率条件下的应用。本文详细介绍了76m自立式宽频带中波天线的主要特性,对天线的电特性和辐射特性进行了仿真分... 详细信息

为了解决传统中波天线在建设高度、占地面积等方面的缺点,本文进行了中波自立式宽频带天线的可行性研究,特别是在低频率、大功率条件下的应用。本文详细介绍了76m自立式宽频带中波天线的主要特性,对天线的电特性和辐射特性进行了仿真分析,通过结果研究了该天线的辐射效率,将对中波广播的天线工程设计提供指导意义,为中波广播发射提供有效地发射途径。

关键词：中波天线工作频率辐射效率

“中原云”大数据中心中波干扰计算及防护措施

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河南科技 2015年第7期34卷 40-43页

作者：黄迎召刘向阳河南省新闻出版广播电影电视局104台河南郑州450003

本文对"中原云"大数据中心的场强大小进行计算和评估。为了保证此地场强理论计算的精确性,特别选定了7个测量点进行实测用于对理论计算的校正。并针对此地超标的无线电干扰提出了防护措施,对不同的材质进行了比对,同时对不同规格的不锈... 详细信息

本文对"中原云"大数据中心的场强大小进行计算和评估。为了保证此地场强理论计算的精确性,特别选定了7个测量点进行实测用于对理论计算的校正。并针对此地超标的无线电干扰提出了防护措施,对不同的材质进行了比对,同时对不同规格的不锈钢网进行了计算。

关键词：中波大数据机房场强不锈钢丝网屏蔽

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中波台站内建造大数据机房的可行性研究

河南科技 2015年第6X期34卷 8-10页

作者：黄迎召刘向阳河南省广播电影电视局104台河南郑州450003

本文对中波台站内建造大数据机房进行了研究,针对不同功率、不同数量发射机产生的场强大小进行计算。对金属丝网在不同频率电磁波下的屏蔽效能进行计算和研究。同时,对机房屏蔽材料的选择进行了初步的探讨,并给出了中波台站内建造大数... 详细信息

本文对中波台站内建造大数据机房进行了研究,针对不同功率、不同数量发射机产生的场强大小进行计算。对金属丝网在不同频率电磁波下的屏蔽效能进行计算和研究。同时,对机房屏蔽材料的选择进行了初步的探讨,并给出了中波台站内建造大数据机房的可行性建议和计算实例。

关键词：中波大数据场强机房屏蔽

Quickly obtaining densely dispersed coherent particles in steel matrix and its related mechanical property

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao Wang Qingsong huang School of Chemical Engineering Sichuan UniversityChengdu 610065China

Densely distributed coherent nanoparticles(DCN)in steel matrix can enhance the work-hardening ability and ductility of steel *** the routes to this end can be generally classified into the liquid-solid route and the solid-solid ***,the formation of DCN structures in steel requires long processes and complex *** far,obtaining steel with coherent particle enhancement in a short time remains a bottleneck,and some necessary steps remain ***,we show a high-efficiency liquid-phase refining process reinforced by a dynamic magnetic ***-Y-Mn-O particles had an average size of around(3.53±1.21)nm and can be obtained in just around 180 *** small nanoparticles were coherent with the matrix,implying no accumulated dislocations between the particles and the steel *** findings have a potential application for improving material machining capacity,creep resistance,and radiation resistance.

关键词： ferritic steels coherent particles microstructure compression test work hardening

口腔癌细胞通过传递性内质网应激影响胰岛β细胞功能的初探

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华西口腔医学杂志 2022年第1期40卷 22-31页

作者：李若焓黄颖昭廖乃麟吴沉洲李一口腔疾病研究国家重点实验室国家口腔疾病临床医学研究中心四川大学华西口腔医院头颈肿瘤外科成都610041

目的探究口腔癌细胞是否通过传递性内质网应激(TERS)影响胰岛β细胞功能。方法选用衣霉素(TM)作为内质网应激(ERS)剂、人口腔鳞癌细胞系CAl-27、SCC-25作为供体细胞、小鼠胰岛素瘤6细胞系MIN6作为受体细胞,采用实时荧光定量聚合酶链反应... 详细信息

目的探究口腔癌细胞是否通过传递性内质网应激(TERS)影响胰岛β细胞功能。方法选用衣霉素(TM)作为内质网应激(ERS)剂、人口腔鳞癌细胞系CAl-27、SCC-25作为供体细胞、小鼠胰岛素瘤6细胞系MIN6作为受体细胞,采用实时荧光定量聚合酶链反应(qPCR)、蛋白免疫印迹(WB)检测ERS标志物及胰岛素表达情况,通过脱氧核苷酸末端转移酶介导的脱氧尿苷三磷酸缺口末端标记(TUNEL)技术检测细胞凋亡水平,采用克隆形成检测细胞增殖能力,采用酶联免疫吸附测定(ELISA)、二喹啉甲酸(BCA)试剂盒检测胰岛β细胞分泌功能。结果对MIN6细胞施加TM刺激,通过qPCR、WB发现,ERS标志物上调,这意味着MIN6细胞能产生ERS。将ERS的口腔癌细胞的上清液加入MIN6细胞,通过qPCR、WB发现ERS的口腔癌细胞可诱导MIN6细胞出现ERS,即发生TERS现象;通过TUNEL实验,发现TERS的MIN6细胞凋亡增加;通过克隆形成实验,发现TERS的MIN6细胞增殖能力下降;通过qPCR、WB发现,TERS的MIN6细胞的胰岛素合成减少,在翻译水平抑制胰岛素的合成;通过ELISA、BCA发现,TERS的MIN6细胞分泌功能下降。结论口腔癌细胞可通过TERS引起胰岛β细胞应激,导致其凋亡增加,存活能力下降,合成及分泌胰岛素能力下降。

关键词：口腔癌细胞内质网应激传递性内质网应激胰岛β细胞胰岛素

Economic effect of China's carbon neutrality target under shared socioeconomic pathways

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Science China Earth Sciences 2025年第1期68卷 142-157页

作者： Zemiao LIU Xianjin huang Xinxian QI School of Geography and Ocean Science Nanjing University Key Laboratory of Carbon Neutrality and Territory Optimization Ministry of Natural Resources Frontiers Science Center for Critical Earth Material Cycling Nanjing University

Economic feasibility is crucial for achieving the carbon neutrality target. However, current integrated assessments often underestimate the economic impacts of mitigation policies due to the lack of consideration of their economic benefits. This study integrates a warming-labour productivity model with a typical integrated assessment model using shared socioeconomic pathways. It simulates China's economic development and carbon emission levels under both baseline and carbon-neutral policy scenarios, evaluating the economic costs and benefits of emission reduction policies aimed at achieving carbon neutrality. These findings reveal the following:(1) The economic costs of emission reduction policies are projected to peak between 2050 and 2060, ranging from 0.41% to 9.37% of total GDP in the baseline scenario, primarily due to increased energy prices and R&D investments. These costs are expected to decline rapidly after 2070.(2) China's carbon-neutral policies will mitigate global warming, with the economic benefits of mitigation projected to reach 5.65% to 17.24% of China's total GDP by 2100.(3) Lowcarbon scenarios SSP1 and SSP4 could significantly reduce initial economic costs and advance the onset of net economic gains to 2060. This integrated assessment confirms that China's carbon neutrality target offers substantial net economic benefits in the long term. To minimize initial economic costs, efforts should focus on enhancing consumption-side transitions, upgrading lowcarbon technologies, and adopting new energy sources.

关键词： Climate change China Carbon neutrality Economic effects Policy

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Tectonic modes of mantle convection and their implications for Earth's tectonic evolution based on three-dimensional numerical simulations

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Science China Earth Sciences 2025年第1期68卷 270-296页

作者： Song XIANG Jinshui huang Bingcheng WU School of Earth and Space Sciences University of Science and Technology of China CAS Center of Excellence in Comparative Planetary Studies

Five tectonic modes of mantle convection are obtained and analyzed with three-dimensional numerical models in a spherical shell domain. The five tectonic convective modes are non-plate mobile-lid, plate-like mobile-lid, episodic plate-like mobile-lid, episodic stagnant-lid, and stagnant-lid convective modes, respectively. The typical characteristics of these five tectonic modes and their numerical classification criteria based on plateness, mobility, and their standard deviations are presented and discussed. The results show that the yield stress of the lithosphere has profound effects on the tectonic convective *** the gradual increase of yield stress, the tectonic mode of mantle convection changes from one to another sequentially through the aforementioned five modes. Additionally, as the Rayleigh number increases, the range of yield stress for the platelike mobile-lid convective mode decreases, and the dimensionless transition stress between different tectonic modes ***, the dimensional transition stress between the non-plate mobile-lid convective mode and plate-like mobile-lid convective mode increases with the increase of Rayleigh number, but decreases between other tectonic modes. Furthermore, we find that the transition stress between different tectonic modes is inversely proportional to the internal heating rate, with the transition stress decreasing as the internal heating rate increases. The fitting analysis of the transition stress between tectonic modes shows that Earth's current plate tectonics correspond to a lithospheric yield stress of 150–250 MPa, which aligns with the strength of serpentinized mantle rock determined by experimental petrography. If the Archean mantle was 300°C warmer than it is today, then the Earth was in an episodic stagnant-lid convective mode. The tectonic evolution of the Earth's surface is closely related to the lithospheric strength and the process of thermal evolution. If the lithospheric strength w

关键词： Tectonic mode of mantle convection Plate-like mobile-lid convection Episodic plate-like mobile-lid convection Episodic stagnant-lid convection Plate tectonics and tectonic evolution of the Earth

Local-contrastive-learning machine with both generalization and adversarial robustness: A statistical physics analysis

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 109-123页

作者： Mingshan Xie Yuchen Wang Haiping huang PMI Lab School of Physics Sun Yat-sen University Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Sun Yat-sen University

Distinct from human cognitive processing, deep neural networks trained by backpropagation can be easily fooled by adversarial examples. To design a semantically meaningful representation learning, we discard backpropagation, and instead, propose a local contrastive learning, where the representations for the inputs bearing the same label shrink(akin to boson) in hidden layers,while those of different labels repel(akin to fermion). This layer-wise learning is local in nature, being biologically plausible.A statistical mechanics analysis shows that the target fermion-pair-distance is a key parameter. Moreover, the application of this local contrastive learning to MNIST benchmark dataset demonstrates that the adversarial vulnerability of standard perceptron can be greatly mitigated by tuning the target distance, i.e., controlling the geometric separation of prototype manifolds.

关键词： machine learning statistical mechanics adversarial robustness neural networks

Neuropeptide cholecystokinin:a key neuromodulator for hippocampal functions

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Neural Regeneration Research 2025年第7期20卷 1991-1992页

作者： Fengwen huang Stephen Temitayo Bello Department of Neuroscience City University of Hong KongKowloon TongHong Kong Special Administrative RegionChina Center for Regenerative Medicine and Health Hong Kong Institute of Science&InnovationChinese Academy of SciencesHong Kong Special Administrative RegionChina

Spatial memory is crucial for survival within external surroundings and wild *** hippocampus,a critical hub for spatial learning and memory formation,has received extensive investigations on how neuromodulators shape its functions(Teixeira et al.,2018;Zhang et al.,2024).However,the landscape of neuromodulations in the hippocampal system remains poorly understood because most studies focus on classical monoamine neuromodulators,such as acetylcholine,serotonin,dopamine,and *** neuropeptides,comprising the most abundant neuromodulators in the central nervous system,play a pivotal role in neural information processing in the hippocampal ***(CCK),one of the most abundant neuropeptides,has been implicated in regulating various physiological and neurobiological statuses(Chen et al.,2019).CCK-A receptor(CCK-AR)and CCK-B receptors(CCK-BR)are two key receptors mediating the biological functions of CCK,both of which belong to class-A sevenfold transmembrane G protein-coupled receptors(Nishimura et al.,2015).CCK-AR preferentially reacts to sulfated CCK,whereas CCK-BR binds both CCK and gastrin with similar affinities(Ding et al.,2022).The expression patterns of CCK-AR and CCK-BR are distinct,implying that CCK has various functions in target *** instance,CCK-AR is widely expressed in the GI and brain subregions and is hence implicated in the control of digestive function and satiety ***,CCK-BR is abundantly and widely distributed in the central nervous system,which majorly regulates anxiety,learning,and memory(Ding et al.,2022).However,the roles of endogenous CCK and CCK receptors in regulating hippocampal function at electrophysiological and behavioral levels have received less attention.

关键词： abundant functions modulator