Results 21 to 30 of about 567,919 (159)
夏热冬暖地区是我国经济和建筑产业最发达的地区之一,也是建筑能耗最多的地区之一.分析和研究夏热冬暖地区建筑能耗的特点对建筑节能有重要的意义.本文用eQUEST建筑能耗模拟软件模拟了夏热冬暖气候下不同的建筑围护结构的能耗性能,并与实际调查结果进行了比较.结论表明:办公类建筑中的空调是最大的能耗终端,全年的能耗以办公设备和照明的能耗最稳定.有外保温措施和同时具有内、外保温措施最大区别在于节省空调电力消耗31.3%和39.1 ...
卢绍辉 +5 more
core +1 more source
Harnessing Trace Elements: Novel Radiosensitization Strategies for Enhanced Cancer Radiotherapy
ABSTRACT Radiotherapy (RT) is one of the core methods of comprehensive cancer treatment. Globally, more than 40% of cancer patients rely on radiotherapy to achieve tumor control, cure or palliative relief. However, radiation resistance, immunosuppression and normal tissue injury limit its clinical application.
Yuhuan Zhang +6 more
wiley +1 more source
基于经验傅里叶分解的混合式高压直流断路器耗能支路故障检测方法研究 [PDF]
为实现更强的能量耗散能力,混合式高压直流断路器的耗能支路需串并联大量金属氧化物压敏电阻(metal oxide varistor,MOV),耗能支路的可靠性将直接影响混合式高压直流断路器的可靠性。但是,现有的耗能支路故障检测方法并不能适应整个能量耗散阶段。为此,提出一种基于经验傅里叶分解的混合式高压直流断路器耗能支路故障检测方法,具体为:首先是信号预处理,对耗能支路每个子模块的分支电流进行归一化和一阶差分计算来获取分析电流;然后是故障特征提取,利用经验傅里叶分解(empirical Fourier ...
彭兆伟 +5 more
doaj +1 more source
ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
wiley +1 more source
ABSTRACT Dielectric polymers commonly suffer from severe performance degradation above 150°C, hindering advanced power systems. Herein, we demonstrate a polyetherimide (PEI) nanocomposite that overcomes this by mimicking the gradient architecture of nacre and bamboo, incorporating a continuous vertical gradient of fluorinated boron nitride nanosheets ...
Jian Wang +8 more
wiley +1 more source
ABSTRACT The growing deployment of high‐frequency electronic systems has intensified the demand for high‐performance microwave absorption materials. In this work, we developed La‐V co‐substituted barium hexaferrites, Ba1‐xLaxFe11.9V0.1O19 (BLFVO), via a sol‐gel route.
Zhihui Yang +7 more
wiley +1 more source
使用EnergyPlus能耗模拟软件对相变材料作为外墙表面隔热材料的应用效果进行模拟,在小空间和小型办公室的模型上,改变相变材料的相变温度、材料结构和用量等使用条件,并进一步考虑室内热源和不同气候区的影响,对比分析在空调季节里空间内部温度的变化情况和空调节能效果。模拟结果表明:相变温度稍高的相变材料更有利于夜间散热蓄冷,同时,结合双层复合结构可获得更好的温度抑制和节能效果;内热源的存在会提高房间空调能耗的基数,从而使相变材料空调节能率计算值降低,并且在一定程度上掩盖了相变材料对室内平均温度的抑制作用 ...
陈喜明, 董凯军, 任俊, 谢泽伟
core +1 more source
ABSTRACT Because magnetic permeability is an intrinsic property of materials, achieving the regulation of magnetic loss is one of the challenges for electromagnetic wave absorption materials. This paper focuses on the research idea of in situ growth of dispersed nanocrystalline FeSiB in an amorphous FeSiB matrix to regulate magnetic properties.
Lei Wang +4 more
wiley +1 more source
Cost of parasite exposure depends on host ontogeny 寄生接觸的代價依賴於宿主發育階段
The cost of parasite exposure varies across host developmental stages, demonstrating that ontogeny influences the expression of non‐consumptive effects (NCEs). Mite exposure resulted in consumptive effects in fly eggs and NCEs in early‐stage pupae; mite longevity was comparable when provisioned with pupae or water but increased when provisioned with ...
Lisa R. MacLeod +2 more
wiley +1 more source
在建筑全生命周期能耗研究中,建筑物建造能耗是必不可少的,结合国内外文献,将建筑物建造能耗分为施工初始能耗、施工配套设施能耗以及废弃物处理能耗三部分。以钢结构住宅为例编程计算其施工初始能耗,得出10个钢结构建筑建造能耗影响因素,通过改进的层次分析法确定10个影响因素的重要程度,以验证理论计算与工程实际是否相符,并且提出针对性的节能措施。
许伟, 徐伟, 李帼昌
doaj

