Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Wenqi Lei"'
Autor:
Ting Shu, Jiawei Zhang, Yitian Zhou, Zhihua Chen, Jinqiu Li, Qihao Tang, Wenqi Lei, Yanjiang Xing, Jing Wang, Chen Wang
Publikováno v:
The European respiratory journal.
BackgroundPulmonary hypertension (PH) is a life-threatening disease featuring pulmonary vessel remodelling and perivascular inflammation. The effect, if any, of eosinophils (EOS) on the development of PH remains unclear.MethodsEOS infiltration and ch
Publikováno v:
Frontiers of Physics. 7:649-669
Laser-induced plasma represents today a widespread spectroscopic emission source. It can be easily generated using compact and reliable nanosecond pulsed laser on a large variety of materials. Its application for spectrochemical analysis for example
Autor:
Xiaochun Wang, Vincent Motto-Ros, Frédéric Pelascini, Jin Yu, Wenqi Lei, F. Surma, Qianli Ma, S. Grégoire, Vincent Detalle
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. :11-17
A specific configuration for plasma fast spectroscopic imaging was developed, where a pair of narrowband filters, one fitting an emission line of a species to be studied and the other out of its emission line, allowed double images to be taken for a
Autor:
Qianli Ma, Jin Yu, Frédéric Pelascini, Vincent Detalle, F. Surma, S. Grégoire, Wenqi Lei, Vincent Motto-Ros, X.C. Wang
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. :31-37
Emissions from C 2 molecules and CN radicals in laser-induced plasmas on polymeric materials were observed with time-resolved spectroscopic imaging. More precisely, differential imaging with a pair of narrowband filters (one centered on the emission
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 73:7-12
Distribution of molecular species, C 2 and CN, in laser-induced plasma from a polymer target (polyvinyl chloride: PVC) was observed for ablation with 266 nm and 355 nm pulses. The influence of ablation photon energy on the distribution of molecular s
Publikováno v:
Analytical and Bioanalytical Chemistry
Analytical and Bioanalytical Chemistry, Springer Verlag, 2011, 401 (9), pp.2681-2689. ⟨10.1007/s00216-011-5079-z⟩
Analytical and Bioanalytical Chemistry, Springer Verlag, 2011, 401 (9), pp.2681-2689. ⟨10.1007/s00216-011-5079-z⟩
International audience; Laser ablation coupled to inductively coupled plasma optical emission spectrometry (LA-ICP-OES) and laser-induced breakdown spectroscopy (LIBS) were investigated for the determination of Ca, Mg, Zn and Na in milk samples. The
Autor:
A. Stankova, Wenqi Lei, H. P. Zeng, J. El Haddad, Vincent Motto-Ros, Qianli Ma, L. J. Zheng, Jin Yu, N. Gilon-Delepine, Xueshi Bai
Publikováno v:
Analytical and Bioanalytical Chemistry
Analytical and Bioanalytical Chemistry, Springer Verlag, 2011, 400 (10), pp.3303-3313. ⟨10.1007/s00216-011-4813-x⟩
Analytical and Bioanalytical Chemistry, Springer Verlag, 2011, 400 (10), pp.3303-3313. ⟨10.1007/s00216-011-4813-x⟩
International audience; Mineral elements contained in commercially available milk powders, including seven infant formulae and one adult milk, were analyzed with inductively coupled plasma atomic emission spectrometry (ICP-AES) and laser-induced brea
Autor:
Lijuan Zheng, Qianli Ma, Jin Yu, Vincent Motto-Ros, Heping Zeng, Myriam Boueri, Xueshi Bai, Wenqi Lei
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 65:896-907
Laser ablation in background gas implies supplementary complexities with respect to what happens in the vacuum. It is however essential to understand in detail the involved mechanisms for a number of applications requiring the ablation to be performe
Autor:
Qianli Ma, Myriam Boueri, A. Ayalon, Wenqi Lei, Gérard Panczer, Lijuan Zheng, Jin Yu, Vincent Motto-Ros, M. Bar-Matthews, Heping Zeng
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 65:707-714
Speleothems represent an important record of the paleoclimate, and more generally past environmental changes thanks to their laminar structure which is related to variations in rainfall and vegetation throughout the seasons and to their elemental as
Autor:
Heping Zeng, Jin Yu, Myriam Boueri, Dacheng Zhang, Vincent Motto-Ros, Wenqi Lei, Qianli Ma, Lijuan Zheng
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 64:891-898
Optical emission of laser-induced plasma on the surface of fresh vegetables provides sensitive analysis of trace elements for in situ or online detection of these materials. This emergent technique promises applications with expected outcomes in food