Results 111 to 120 of about 3,701 (159)

[Determination of ethylene oxide and acetaldehyde in petrochemical exhaust based on thermal desorption- gas chromatography-mass spectrometry]. [PDF]

Se Pu
Li YJ.
europepmc   +1 more source

C₄F₇N/CO₂混合气体湿度检测技术研究

Gaoya dianqi
电气设备中C4F7N/CO2混合绝缘气体的湿度水平影响气体的绝缘性能，定期检测湿度是日常运维工作之一。文中研究采用变电站日常运维中常规的冷镜式露点仪和阻容式湿度计对不同湿度的C4F7N/CO2混合绝缘气体进行检测，实验表明上述常规湿度检测仪器均不能直接应用于C4F7N/CO2混合气体的湿度检测。文中将上述冷镜式露点仪进行技术改造后，采用标准湿度的C4F7N/CO2混合气体对其进行准确度实验，结果表明，改造后的冷镜式露点仪的露点测量误差不超过±0.2 ℃，且在C4F7N比例不超过12 ...
谢成, 邵先军, 张伟, 王鑫, 丁五行, 何毅帆   +5 more
doaj  

[Determination of tetracyclines in animal muscle tissues by ultra performance liquid chromatography- tandem mass spectrometry]. [PDF]

Se Pu
Chu K, Li JH, Wang QQ, Li XT, Wu S, Chen C.   +5 more
europepmc   +1 more source

[Rapid determination of 12 photoinitiator residues in medicinal composite membranes by ultra performance convergence chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Cao YJ, Liu CX, Chen LL, Shang Y, Chen XL, Hu B, Fu M, Hu M.   +7 more
europepmc   +1 more source

13X分子筛对C₄F₇N混合气体碳氟分解产物吸附性能研究

Gaoya dianqi
环保绝缘气体C4F7N具有优异的绝缘性能，与缓冲气体CO2混合后具有在气体绝缘设备中运用的潜力。选择合适吸附材料对C4F7N混合气体分解产物吸附处理，可保证环保绝缘气体设备的安全稳定运行。文中通过气体吸附实验探究了13X分子筛对C4F7N混合气体主要4种碳氟分解产物的吸附性能，并分析其对主要气体C4F7N和CO2体积分数的影响。通过观测吸附实验后各碳氟分解产物体积分数变化，进而对13X分子筛关于开断实验后的混合气体吸附性能进行评估。实验结果表明13X分子筛对C3F6和C3F8有较强吸附性能 ...
杨景刚, 丁然, 赵科, 高山, 肖焓艳, 卞超, 田双双, 王毅   +7 more
doaj  

[Efficacy and safety of inhaled salbutamol sulfate combined with beclomethasone dipropionate in children with bronchial asthma: a randomized controlled study]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Chen CZ, Yang Q.
europepmc   +1 more source

[Long-term prognosis and influencing factors of anterior composite resin restoration]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Chen W, Wu F, Wei X.
europepmc   +1 more source

[Value of targeted next-generation sequencing in pathogen detection for neonates with respiratory distress syndrome: a prospective randomized controlled trial]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zhang HH, Ou-Yang X, Liu XP, Huang SR, Lin YF.   +4 more
europepmc   +1 more source

[A Case of Combined Small Cell Lung Cancer and Literature Review]. [PDF]

Zhongguo Fei Ai Za Zhi
Gao M, Lu X, Hao B, Li N, Xie S.
europepmc   +1 more source

[Magnetic one-step purification-high performance liquid chromatography-triple quadrupole/composite linear ion trap mass spectrometry for the determination of 54 veterinary drug residues in carp]. [PDF]

Se Pu
Wen YP, Huo WD, Zhang CY, Liu H, Mu YC, Wu LD, Li JC.   +6 more
europepmc   +1 more source