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Seasonal variability of ambient NH_3, NO, NO_2 and SO_2 over Delhi

Journal of Environmental Sciences 2010年第7期22卷 1023-1028页

作者： S.K.Sharma A.Datta T.Saud M.Saxena T.K.Mandal Y.N.Ahammed B.C.Arya Radio and Atmospheric Sciences Division National Physical Laboratory Council of Scientific and Industrial Research (CSIR)

We present the diurnal and seasonal variability of ambient NH3, NO, NO2 and SO2 over Delhi, India. Ambient NH3, NO and NO2 were measured continuously during winter, summer and autumn seasons using NH3- and NOx-analyzer, which operates by chemiluminescence method with a higher estimation efficiency （〉 90%） than the chemical trap method （reproducibility 4.7%）. Prominent diurnal, day-to-day and seasonal variations of ambient mixing ratio of NH3, NO, NO2 and SO2 were observed during the study period. Seasonal variation with higher mixing ratio in winter was observed for all measured trace gases except NO. Day-night variation of all measured trace gases observed was higher in winter in comparison with summer. Late morning increase in NO2 mixing ratio might be attributed to conversion of NO to NO2 with the interaction ofO3.

关键词： ambient NH3, diurnal and seasonal variations chemiluminescence method ambient NO, NO2 and SO2

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Evaluation of Dynamic Changes of IgG and IgM in COVID-19 Patients by Different Detection methods

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Journal of Biosciences and Medicines 2023年第4期11卷 431-442页

作者： Zeduan Liu Lida Mo Xiaolu Luo Laboratory Department of the Fourth People’s Hospital of Nanning City Nanning China Guangxi AIDS Clinical Treatment Center (Nanning) Guangxi Medical University Nanning China

Objective: To analyze the dynamic evaluation of chemiluminescence, colloidal gold, and immunofluorescence chromatography in detecting antibodies in COVID-19 patients within four weeks of infection, and to provide evidence for clinical application. method: 74 patients with confirmed SARS-COV-2 infection in the local area were selected as the experimental group, while 231 patients with negative SARS-COV-2 results but not vaccinated with Covid19 vaccine were selected as the control group;during the first, second, third, and fourth weeks after enrollment in the experimental group, three methods were used to detect SARS-COV-2 IgG and IgM in patients’ blood: chemiluminescence method, colloidal gold antibody method, and immuno-fluorescence chromatography. In the control group, three methods were used to detect SARS-COV-2 IgG and IgM during physical examination for SARS-COV-2 nucleic acids. The ROC curve was drawn to analyze the value of each indicator in predicting SARS-COV-2 infection, and the kappa method was used to analyze the consistency of the detection results of each indicator. Results: There was no significant difference in the positive rates of SARS-COV-2 IgM and IgG antibodies detected by chemiluminescence, colloidal gold, and immunofluorescence chromatography during the four-week period (P > 0.05). The positive rates of SARS-COV-2 IgM and IgG antibodies detected by the three methods during the first week of infection were not higher than 60%;when the three methods were used to detect SARS-COV-2 IgM and IgG in vivo, the AUC diagnosed by the test results was less than 0.80 at the first week, the diagnostic efficacy of the three methods was above 0.95 from the second week to the fourth week, and the diagnostic efficacy of the three methods was higher than 0.97 at the fourth week. The diagnostic efficacy of the three methods was comparable;the three methods for detecting SARS-COV-2 IgM and IgG antibodies showed high consistency in four cycles. Conclusion: Chemilumi

关键词： chemiluminescence method Colloidal Gold method Immunofluorescence Chromatography SARS-COV-2 IgM SARS-COV-2 IgG

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Evaluation of Clinical Application of chemiluminescence and Real-time,Fluorescence-based Quantitative PCR in Diagnosis of Epstein-Barr Virus lnfection

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Journal of Clinical and Nursing Research 2020年第4期4卷 21-24页

作者： Huijuan Geng Yan Wang Hao Wang Jirui Sun Hui Tang Baoding People's Hospital Baoding 071000Hebei ProvinceChina Affiliated Hospital of Hebei University Baoding 071000Hebei ProvinceChina Baoding No.1 Central Hospital Baoding 071000Hebei ProvinceChina

Objective:To compare the effects of clinical application of chemiluminescence and real-time,fluorescence-based quantitative PCR in the detection Epstein-Barr virus(EBV).methods:The data of chemiluminescence and real-time fluorescent quantitative *** were suspected of being infectea w1tn rito1 roro January 2016 to January 2019 in our hospital were *** specific stage of EBV infection was analyzed,and the differences in results of the two detection methods were ***:chemiluminescence method was used to detect EBV infection during the active *** sensitivity of the chemiluminescence method was 76.7%(56/73)and the real-time quantitative PCRmethod was 90.4%(66/73).There was a statistical difference between the two detection methods(Pchemiluminescence method and the real-time,fluorescence-based quantitative PCR method in the detection of EBV infection,but the sensitivity of chemiluminescence method is slightly lower than the real-time quantitative *** is noteworthy that chemiluminescence method is convenient and fast while the real-time,fluorescence-based quantitative PCR method is more accurate,which can provide a more accurate reference for clinical treatment.

关键词： Epstein-Barr virus chemiluminescence method Real-time,Fluorescence-based quantitative PCR method

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