Gaoya dianqi, 2019 为了探索混合气体中SF6分解产物的检测技术,了解不同背景气体对SF6分解产物检测结果的影响,文中对比研究了CF4/SF6、N2/SF6等不同混合气体与纯SF6为背景气体条件下,SO2、H2S、CO等SF6分解产物检测结果的差异,研究表明,不同背景气体对SF6分解产物的检测结果影响不同,文中通过分析拟合得出了CF4/SF6、N2/SF6混合气体对SF6分解产物的检测结果的影响系数,并建立了几种CF4/SF6、N2/SF6混合气体为背景气体与纯SF6为背景气体条件下SF6分解产物转换的数学模型。
韩慧慧
doaj
[Clinical characteristics and prognosis of primary immune thrombocytopenia complicated with diffuse alveolar hemorrhage]. [PDF]
Zhonghua Xue Ye Xue Za ZhiAn ZY +8 more
europepmc +1 more source
[Epidemiological characteristics of human metapneumovirus and risk factors for severe pneumonia in hospitalized children]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWang YX +5 more
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Gaoya dianqiC4F7N混合气体由于其优异的绝缘性能和更低的温室效应被认为是一种优异的替代SF6的环保绝缘气体，C4F7N/CO2混合气体绝缘设备已被逐渐推广和使用。由于混合气体的绝缘性能与C4F7N的体积分数有关，通过对混合气体中微量C4F7N的检测，可以对C4F7N/CO2混合气体电气设备的绝缘状态进行有效评估。文中通过红外光谱平台，确定了C4F7N的红外光谱信息。通过对C4F7N体积分数为100~2 000 μL/L的C4F7N/CO2混合气体检测，确定了微量C4F7N的最佳检测波段 ...
刘伟 +5 more
doaj
[Interpretation of the "Expert consensus on the management of neonatal parenteral nutrition (2025)"]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiLin XZ +8 more
europepmc +1 more source
[Efficacy of sequential lateral position management in patients with chronic wounds and pulmonary complications: a prospective RCT]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiYin X, Chang F, Shao LJ, Cao J, Sha W.
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Gaoya dianqi气体绝缘电气设备使用SF6/CF4混合气体可以避免SF6气体液化，适合在极寒地区应用。为获得设备内部存在尖端放电缺陷时SF6/CF4混合气体的绝缘性能受温度的影响，采用尖板电极模拟缺陷尖端放电，开展SF6/CF4混合气体在0.1~0.7 MPa气压范围和-50~20 ℃温度范围的工频放电实验。结果表明，不同温度下SF6/CF4混合气体的击穿电压随气压升高均出现先升高—再降低—再升高的驼峰趋势；但随着温度降低，驼峰峰值处的击穿电压随温度降低出现降低趋势，而在非驼峰峰值处的击穿电压随温度降低而基本不变 ...
陈远东 +5 more
doaj
[Determination of 51 per- and polyfluoroalkyl substances in raw water and drinking water by online solid-phase extraction coupled with ultra performance liquid chromatography- tandem mass spectrometry]. [PDF]
Se PuChen YY +5 more
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[Construction and practice of the "Construction Supports Competitions-Competitions Nurture Teaching-Teaching Promotes Learning" closed-loop innovative teaching mode： a case study of micro-plasma emission spectrometer setup and trace element analysis experiment]. [PDF]
Se PuXue WY +8 more
europepmc +1 more source
SynAsk: Unleashing the Power of Large Language Models in Organic Synthesis
The field of natural language processing (NLP) has witnessed a transformative shift with the emergence of large language models (LLMs), revolutionizing various language tasks and applications, and the integration of LLM into specialized domains enhances ...
Deng, Hao +7 more
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