Results 11 to 20 of about 9,934 (108)
全球能源互联网, 2021 相比于柔性直流输电（VSC-HVDC）送出方案，送端采用不控整流器（diode rectifier，DR）的DR-HVDC方案具有损耗低、体积小和成本低的优点，是未来海上风电送出技术的重要发展方向之一。为了解决黑启动和海上交流电压调控问题，现有的DR-HVDC拓扑主要采用海上平台装设储能、系统增加交流联络线路、送端换流站并联VSC三种方案。以深远海海上风电送出为背景，对上述三种DR-HVDC拓扑方案进行了经济性分析，并与VSC-HVDC方案进行比较。采用了全寿命周期成本分析（life cycle ...
李贤育 +6 more
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Zhejiang Daxue xuebao. Lixue ban, 2004 1999年6月下旬长江中下游有一次维持时间较长的梅雨锋低涡过程，采用90-30-10 km的中尺度数值模拟资料，对6月28〜30日这一过程中两个不同尺度的低涡（中-α涡和中-β涡）进行分析：通过代表性空气质点的轨迹和物理属性个别变化的计算，揭示构成低涡的三维气流结构.结果表明：1）构成中-α涡的气流为低层西北半部干冷的东至东北气流；中低层东南象限暖湿的西南气流及高层西西北气流. 2）中-α涡南侧的西北气流在幕阜山背风坡这一有利的地形条件下与西南气流辐合，促使了中-β涡的生成.
ZHANGZhi-ying(章志英)
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Simulation analysis of a severe convection system with gust front(一例伴随阵风锋的强对流系统模拟分析)
Zhejiang Daxue xuebao. Lixue ban, 2015 利用WRF中尺度数值模式较好地模拟了2009年6月5日一次严重影响浙江的伴随阵风锋的强对流过程.在得到与实况较为接近的中尺度特征后，对模拟的强对流系统特点、环流结构和气流轨迹进行分析，结果表明：该过程为前倾槽型强对流天气，高空冷平流叠置在低层暖低压之上具有明显的位势不稳定层结.在强对流系统爆发移入浙北后，主要分为前后2个伴随阵风锋的对流系统，2条阵风锋处辐合强度的相关性较好，该阵风锋主要由经向风引起，伴随明显的气压扰动.强对流后侧的低层强辐散气流伴随着大的水平强风速区，在前方形成了明显的阵风锋 ...
XUYaqin(徐亚钦) +3 more
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Intact coastal nursery rearing amid climate‐driven phenological shifts in threatened salmon
Conservation Biology, EarlyView.Abstract Literature linking phenology to climate has proliferated in recent decades and shows that climate change has reorganized seasonal opportunities worldwide. However, this literature often quantifies changes in point measures of timing (e.g., beginnings and peaks) without context about duration (e.g., rearing season length) or performance (e.g ...
Stuart H. Munsch +8 more
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Dianci bileiqi, 2023 无间隙氧化锌避雷器运行过程中，其全电流容易受外界气象因素影响。针对该问题，本研究考虑实际全电流测量模型，基于长期实测避雷器运行现场全电流值及气象数据，分析了数据变化特征；考虑了全电流对气象变化的迟滞性以及不同气象条件，计算了气象因素对全电流相关系数；为降低气象因素对全电流测量影响，分别通过线性拟合、非线性拟合、神经网络基于温湿度对全电流进行重构计算，进一步得到被测三相避雷器的逐月全电流参考值。
史宇昊 +4 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Solar‐blind ultraviolet (UV) photodetectors (SBPDs) play a critical role in applications including UV communication and fire warning systems. Gallium oxide (Ga2O3) has emerged as a promising material due to its wide bandgap and low cost, but suffers from high dark current and slow response speed caused by oxygen vacancy (VO) defects. This work
Yuhao Lin +14 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Li–O2 batteries garner widespread attention owing to their remarkable theoretical specific capacity. Nevertheless, the feasible implementation of the system is hindered by sluggish cathode reaction kinetics and poor anode stability. Herein, the carbon dots (CDs) with ‐OH, ‐NH2, and ‐COOH groups are synthesized and employed as electrolyte ...
Ying Li +9 more
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Zhejiang Daxue xuebao. Lixue ban, 2015 利用常规和非常规观测资料，对浙江省台州地区2014年3月19日冰雹等强对流天气过程进行了分析.研究发现：(1)冬末春初，前倾槽、地面弱冷空气东移南下的环流形势有利于强对流天气的形成；(2)台州地区高温高湿、不稳定层结、地形抬升及较强的垂直风切变条件，为局地强对流天气的出现提供了基础；(3)受到地形强迫抬升的影响，对流云团由西向东进入台州后加强发展，对流单体移向前方近地层的偏东气流，与对流单体后部的下沉气流相结合，使得对流单体得以维持和发展；(4)雷达回波图上，多个时刻出现了高悬的强回波 ...
GANJingjing(甘晶晶) +2 more
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World Water Policy, Volume 12, Issue 3, August 2026.ABSTRACT Groundwater depletion is a major challenge in semiarid, hard‐rock regions where irrigation demands often exceed natural recharge. This study evaluates the effectiveness of farm‐scale recharge pits as a local, supplementary, and community‐managed groundwater recharge solution in the Dharta catchment of Rajasthan, India. Alongside check dams and
Prahlad Soni +4 more
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