Background: The Spontaneous Reporting System (SRS) of the Food and Drugs Administration (FDA) of the United States of America (US), known as the FDA Adverse Event Reporting System (FAERS), is a mechanism for collectin...Background: The Spontaneous Reporting System (SRS) of the Food and Drugs Administration (FDA) of the United States of America (US), known as the FDA Adverse Event Reporting System (FAERS), is a mechanism for collecting information on safety concerns associated with the use of drugs for redress, as they are used on large scale. The data which is the subject of this paper came from the FAERS database. This paper reports on the analysis of data covering 2013 to 2018 period, but compares the observed trends in the variables during this period with that of the 2007 to 2012 period to ascertain whether the trends change over time;as this paper is, in a sense, a sequel to an earlier one with a similar title as this but covering the period 2007 to 2012. Objectives: The objectives of the study reported in this paper were to: i) explore the trends in the variables involved with the adverse events problem in the 2013 to 2018 period and compare these trends with that found in the study covering the 2007 to 2012 period;ii) determine whether or not the level of missing variable values in the 2013 to 2018 period is lower than, the same or higher than it was in the 2007 to 2012 period;iii) find out how the first twenty principal suspect drugs most cited to be involved in adverse events occurring during drug use in the 2013 to 2018 period compare with that of the 2007 to 2012 period. Methods: The Food and Drugs Administration (FDA) makes extracts from the FAERS database freely available to the public on quarterly basis. Fourteen (14) out of over fifty (50) variables contained in these extracts were reckoned to be connected with the objectives of the study and were examined using the tools of frequencies, proportions and averages, on account of the nature of the data. Results: For the period 2013 to 2018, adverse events reports submitted to the FDA (US) more than doubled (2.1 times), accounting for an annual average growth rate of 15.8 %, which is considerably lower than the annual average growth rate of 22.1% for the 2007 to 2012 period. However, the reported number of cases for 2015 was 53.8% more than that of 2014. Consistent with the results for 2007 to 2012 period, the 2013 to 2018 period saw Female subjects accounting for over 60% of the annual and the overall number of reports. Overall, non-health professionals appear to have a slight edge over health professionals in reporting adverse drug events in the 2013 to 2018 period, with an indication that reports from non-health professionals are on the decline and that from health professionals is on the rise. Non-health professionals and health professionals were almost equally likely to report adverse events in the 2007 to 2012 period. Also, the findings for the 2013 to 2018 period suggest that the older one gets the more vulnerable one becomes to adverse events associated with drug use, which is consistent with the findings for the 2007 to 2012 period. Conclusion: The dangers that come with the use of drugs is an evolving one and therefore there is the need to examine SRS data from time to time so that emerging drug safety concerns can be dealt with timeously.展开更多
A Neutron Time-of-Flight(NTOF) spectrometer, based at the Heavy Ion Research Facility in Lanzhou(HIRFL) was developed for studies of neutron production of proton induced spallation reactions related to the ADS project...A Neutron Time-of-Flight(NTOF) spectrometer, based at the Heavy Ion Research Facility in Lanzhou(HIRFL) was developed for studies of neutron production of proton induced spallation reactions related to the ADS project. After the presentation of comparisons between calculated spallation neutron production doubledifferential cross sections and the available experimental data, a detailed description of the NTOF spectrometer is given. Test beam results show that the spectrometer works well and data analysis procedures are established.The comparisons of the test beam neutron spectra with those of GEANT4 simulations are presented.展开更多
11 oxides (MgO, CaO, BaO, TiO2, V2O5, MnO2, Fe2O3, CuO, ZnO, PbO2 and B2O3), often found in coal-derived carbon materials, were loaded into the coal-derived carbon material by two methods such as adsorbing oxides thro...11 oxides (MgO, CaO, BaO, TiO2, V2O5, MnO2, Fe2O3, CuO, ZnO, PbO2 and B2O3), often found in coal-derived carbon materials, were loaded into the coal-derived carbon material by two methods such as adsorbing oxides through solution onto the surface of coke and adding oxides into the coal before carbonization. The effects of oxides on carbon solution reaction of carbon material were investigated and compared. The results show that the effect trends are similar but the effect of oxides by adsorbing is remarkably greater than that of the oxides by adding oxides as BaO, MgO, Fe2O3, CuO, ZnO, MnO2, PbO2 and B2O3. And the effect trends are similar. BaO, CaO and Fe2O3 are the greatest affecting oxides. The saturation point of addition content is 3% and that of adsorption is 1%.展开更多
文摘Background: The Spontaneous Reporting System (SRS) of the Food and Drugs Administration (FDA) of the United States of America (US), known as the FDA Adverse Event Reporting System (FAERS), is a mechanism for collecting information on safety concerns associated with the use of drugs for redress, as they are used on large scale. The data which is the subject of this paper came from the FAERS database. This paper reports on the analysis of data covering 2013 to 2018 period, but compares the observed trends in the variables during this period with that of the 2007 to 2012 period to ascertain whether the trends change over time;as this paper is, in a sense, a sequel to an earlier one with a similar title as this but covering the period 2007 to 2012. Objectives: The objectives of the study reported in this paper were to: i) explore the trends in the variables involved with the adverse events problem in the 2013 to 2018 period and compare these trends with that found in the study covering the 2007 to 2012 period;ii) determine whether or not the level of missing variable values in the 2013 to 2018 period is lower than, the same or higher than it was in the 2007 to 2012 period;iii) find out how the first twenty principal suspect drugs most cited to be involved in adverse events occurring during drug use in the 2013 to 2018 period compare with that of the 2007 to 2012 period. Methods: The Food and Drugs Administration (FDA) makes extracts from the FAERS database freely available to the public on quarterly basis. Fourteen (14) out of over fifty (50) variables contained in these extracts were reckoned to be connected with the objectives of the study and were examined using the tools of frequencies, proportions and averages, on account of the nature of the data. Results: For the period 2013 to 2018, adverse events reports submitted to the FDA (US) more than doubled (2.1 times), accounting for an annual average growth rate of 15.8 %, which is considerably lower than the annual average growth rate of 22.1% for the 2007 to 2012 period. However, the reported number of cases for 2015 was 53.8% more than that of 2014. Consistent with the results for 2007 to 2012 period, the 2013 to 2018 period saw Female subjects accounting for over 60% of the annual and the overall number of reports. Overall, non-health professionals appear to have a slight edge over health professionals in reporting adverse drug events in the 2013 to 2018 period, with an indication that reports from non-health professionals are on the decline and that from health professionals is on the rise. Non-health professionals and health professionals were almost equally likely to report adverse events in the 2007 to 2012 period. Also, the findings for the 2013 to 2018 period suggest that the older one gets the more vulnerable one becomes to adverse events associated with drug use, which is consistent with the findings for the 2007 to 2012 period. Conclusion: The dangers that come with the use of drugs is an evolving one and therefore there is the need to examine SRS data from time to time so that emerging drug safety concerns can be dealt with timeously.
基金Supported by National Natural Science Foundation of China(No.11075189)100 Persons Project(Nos.0910020BR0 and Y010110BR0)ADS Project 302 of the Chinese Academy of Sciences(No.XDA03030200)
文摘A Neutron Time-of-Flight(NTOF) spectrometer, based at the Heavy Ion Research Facility in Lanzhou(HIRFL) was developed for studies of neutron production of proton induced spallation reactions related to the ADS project. After the presentation of comparisons between calculated spallation neutron production doubledifferential cross sections and the available experimental data, a detailed description of the NTOF spectrometer is given. Test beam results show that the spectrometer works well and data analysis procedures are established.The comparisons of the test beam neutron spectra with those of GEANT4 simulations are presented.
基金Project(50473064) supported by the National Natural Science Foundation of China Project(040A02) supported by the Key Science Foundation of Shanghai Higher Education, China
文摘11 oxides (MgO, CaO, BaO, TiO2, V2O5, MnO2, Fe2O3, CuO, ZnO, PbO2 and B2O3), often found in coal-derived carbon materials, were loaded into the coal-derived carbon material by two methods such as adsorbing oxides through solution onto the surface of coke and adding oxides into the coal before carbonization. The effects of oxides on carbon solution reaction of carbon material were investigated and compared. The results show that the effect trends are similar but the effect of oxides by adsorbing is remarkably greater than that of the oxides by adding oxides as BaO, MgO, Fe2O3, CuO, ZnO, MnO2, PbO2 and B2O3. And the effect trends are similar. BaO, CaO and Fe2O3 are the greatest affecting oxides. The saturation point of addition content is 3% and that of adsorption is 1%.
文摘目的 研究针刺、穴位埋线联合治疗过敏性鼻炎的疗效及对炎症因子白介素-4(interleukin-4,IL-4),白介素-6(interleukin-6,IL-6),白介素-10(interleukin-10,IL-10)的影响。方法 选取2021年6月—2022年6月医院诊治的过敏性鼻炎患者106例作为研究对象,根据随机数字表法均分为两组,对照组53例、观察组53例。对照组进行穴位埋线治疗,观察组采用针刺、穴位埋线联合治疗。治疗4周后观察两组患者的疗效,炎症因子IL-4、IL-6、IL-10水平变化,生活质量以及不良反应情况。结果 观察组、对照组总有效率分别为98.11%、84.91%,观察组显著高于对照组,差异有统计学意义(P<0.05)。治疗前,两组患者炎症因子IL-4、IL-6、IL-10水平差异无统计学意义(P>0.05),治疗后,两组IL-4、IL-6水平均显著下降,IL-10水平显著升高差异有统计学意义(P<0.05),并且观察组IL-4、IL-6水平显著低于对照组,IL-10水平显著高于对照组差异有统计学意义(P<0.05)。治疗前两组鼻结膜炎生活质量调查问卷(rhinoconjunctivitis quality of life questionnaire, RQLQ)评分差异均无统计学意义(P>0.05),治疗后两组RQLQ各维度评分及总分均显著降低差异有统计学意义(P<0.05),且观察组RQLQ鼻部症状、眼部症状评分及总分显著低于对照组,差异有统计学意义(P<0.05)。观察组、对照组不良反应发生率分别为9.43%、5.66%,组间差异无统计学意义(P>0.05)。结论 针刺、穴位埋线联合治疗过敏性鼻炎的疗效显著,并且能够显著改善炎症因子水平及患者生活质量,同时保证良好的安全性,具有临床应用价值。
