目的评估1990-2019年中国结直肠癌发病与死亡趋势,为降低结直肠癌疾病负担提供科学依据。方法本研究采用年龄-时期-队列(age-period-cohort,APC)模型,分析2019年全球疾病负担(global burden of disease study,GBD2019)数据库中1990-201...目的评估1990-2019年中国结直肠癌发病与死亡趋势,为降低结直肠癌疾病负担提供科学依据。方法本研究采用年龄-时期-队列(age-period-cohort,APC)模型,分析2019年全球疾病负担(global burden of disease study,GBD2019)数据库中1990-2019年中国结直肠癌发病率和死亡率的数据。结果1990-2019年中国结直肠癌发病/死亡率总体呈现上升趋势。APC模型分析结果显示:我国结直肠癌的发病与死亡风险的年龄效应随着年龄的增长而增加。结直肠癌发病风险的队列效应总体呈上升趋势,死亡风险队列效应呈现先上升后下降趋势。结直肠癌发病风险的时期效应总体呈上升趋势,死亡风险的时期效应呈先下降后上升再下降趋势。结论由于年龄、时期和队列效应的影响,中国居民1990-2019年结直肠癌发病率和死亡率均呈上升趋势,且结直肠癌发病的风险在60~70年龄段增长速度最快。这提示我们,有必要加强结直肠癌相关健康教育,尤其是中老年群体的健康干预,进而预防结直肠癌的发生,减轻疾病给个人、家庭和社会带来的负担。展开更多
直吹式煤粉炉燃烧系统具有非线性、滞后性以及强耦合性等特点。常规自动化控制只适用于一定负荷条件下,而对变负荷及煤质变化等适应性差,不能满足用气负荷变化速度。APC(Advanced Process Control)先进过程控制[1]系统的出现,大大改善...直吹式煤粉炉燃烧系统具有非线性、滞后性以及强耦合性等特点。常规自动化控制只适用于一定负荷条件下,而对变负荷及煤质变化等适应性差,不能满足用气负荷变化速度。APC(Advanced Process Control)先进过程控制[1]系统的出现,大大改善了传统PID控制[2]的控制效果,使优化结果始终处于安全允许的范围内,确保煤粉锅炉及发电系统运行安全性,同时,根据负荷和煤质的变化,优化配风和给煤,使锅炉系统有较高的运行效率。展开更多
循环流化床锅炉(Circulating Fluidized Bed Boiler,以下简称CFB锅炉)燃烧系统具有非线性、滞后性以及强耦合性等特点。常规自动化控制只适用于一定负荷条件下,而对变负荷及煤质变化等适应性差,不能满足用汽负荷变化速度。APC(Advanced ...循环流化床锅炉(Circulating Fluidized Bed Boiler,以下简称CFB锅炉)燃烧系统具有非线性、滞后性以及强耦合性等特点。常规自动化控制只适用于一定负荷条件下,而对变负荷及煤质变化等适应性差,不能满足用汽负荷变化速度。APC(Advanced Process Control)先进过程控制系统的应用,不同于常规单回路控制,具有比常规PID控制更好的控制效果,使优化结果始终处于安全允许的范围内,确保CFB锅炉及发电系统运行的安全性,同时,根据负荷和煤质的变化,综合考虑各种干扰,优化配风和给煤,使系统有较高的运行效率。展开更多
目的:探究重症肺炎患者血清APC,IL-18的表达及其与临床预后的相关性。方法:选取2022年1月~2024年1月我院收治的76例重症肺炎患者作为研究组,选择同期的76名到我院进行体检的健康人员作为对照组,全部研究对象均接受血清APC,IL-18指标的...目的:探究重症肺炎患者血清APC,IL-18的表达及其与临床预后的相关性。方法:选取2022年1月~2024年1月我院收治的76例重症肺炎患者作为研究组,选择同期的76名到我院进行体检的健康人员作为对照组,全部研究对象均接受血清APC,IL-18指标的检测。结果:研究组的血清APC水平更低(P Objective: To investigate the expression of serum APC and IL-18 in patients with severe pneumonia and their correlation with clinical prognosis. Method: 76 severe pneumonia patients admitted to our hospital from January 2022 to January 2024 were selected as the study group, and 76 healthy individuals who came to our hospital for physical examination during the same period were selected as the control group. All study subjects underwent serum APC and IL-18 index detection. Result: The serum APC level in the study group was lower (P < 0.05), and the IL-18 level in the study group was higher (P < 0.05);The regression analysis results showed that the levels of serum IL-18 and APC were related to the clinical prognosis of patients with severe pneumonia (P < 0.05);There is a significant positive correlation (P < 0.05) between different prognostic outcomes and serum IL-18 levels, and a significant negative correlation (P < 0.05) between different prognostic outcomes and serum APC levels. Conclusion: Compared with healthy individuals, patients with severe pneumonia show significant changes in serum APC and IL-18 indicators, which also have a significant impact on the prognosis of severe pneumonia patients, providing important reference for subsequent clinical diagnosis and treatment.展开更多
文摘目的评估1990-2019年中国结直肠癌发病与死亡趋势,为降低结直肠癌疾病负担提供科学依据。方法本研究采用年龄-时期-队列(age-period-cohort,APC)模型,分析2019年全球疾病负担(global burden of disease study,GBD2019)数据库中1990-2019年中国结直肠癌发病率和死亡率的数据。结果1990-2019年中国结直肠癌发病/死亡率总体呈现上升趋势。APC模型分析结果显示:我国结直肠癌的发病与死亡风险的年龄效应随着年龄的增长而增加。结直肠癌发病风险的队列效应总体呈上升趋势,死亡风险队列效应呈现先上升后下降趋势。结直肠癌发病风险的时期效应总体呈上升趋势,死亡风险的时期效应呈先下降后上升再下降趋势。结论由于年龄、时期和队列效应的影响,中国居民1990-2019年结直肠癌发病率和死亡率均呈上升趋势,且结直肠癌发病的风险在60~70年龄段增长速度最快。这提示我们,有必要加强结直肠癌相关健康教育,尤其是中老年群体的健康干预,进而预防结直肠癌的发生,减轻疾病给个人、家庭和社会带来的负担。
文摘直吹式煤粉炉燃烧系统具有非线性、滞后性以及强耦合性等特点。常规自动化控制只适用于一定负荷条件下,而对变负荷及煤质变化等适应性差,不能满足用气负荷变化速度。APC(Advanced Process Control)先进过程控制[1]系统的出现,大大改善了传统PID控制[2]的控制效果,使优化结果始终处于安全允许的范围内,确保煤粉锅炉及发电系统运行安全性,同时,根据负荷和煤质的变化,优化配风和给煤,使锅炉系统有较高的运行效率。
文摘循环流化床锅炉(Circulating Fluidized Bed Boiler,以下简称CFB锅炉)燃烧系统具有非线性、滞后性以及强耦合性等特点。常规自动化控制只适用于一定负荷条件下,而对变负荷及煤质变化等适应性差,不能满足用汽负荷变化速度。APC(Advanced Process Control)先进过程控制系统的应用,不同于常规单回路控制,具有比常规PID控制更好的控制效果,使优化结果始终处于安全允许的范围内,确保CFB锅炉及发电系统运行的安全性,同时,根据负荷和煤质的变化,综合考虑各种干扰,优化配风和给煤,使系统有较高的运行效率。
文摘目的:探究重症肺炎患者血清APC,IL-18的表达及其与临床预后的相关性。方法:选取2022年1月~2024年1月我院收治的76例重症肺炎患者作为研究组,选择同期的76名到我院进行体检的健康人员作为对照组,全部研究对象均接受血清APC,IL-18指标的检测。结果:研究组的血清APC水平更低(P Objective: To investigate the expression of serum APC and IL-18 in patients with severe pneumonia and their correlation with clinical prognosis. Method: 76 severe pneumonia patients admitted to our hospital from January 2022 to January 2024 were selected as the study group, and 76 healthy individuals who came to our hospital for physical examination during the same period were selected as the control group. All study subjects underwent serum APC and IL-18 index detection. Result: The serum APC level in the study group was lower (P < 0.05), and the IL-18 level in the study group was higher (P < 0.05);The regression analysis results showed that the levels of serum IL-18 and APC were related to the clinical prognosis of patients with severe pneumonia (P < 0.05);There is a significant positive correlation (P < 0.05) between different prognostic outcomes and serum IL-18 levels, and a significant negative correlation (P < 0.05) between different prognostic outcomes and serum APC levels. Conclusion: Compared with healthy individuals, patients with severe pneumonia show significant changes in serum APC and IL-18 indicators, which also have a significant impact on the prognosis of severe pneumonia patients, providing important reference for subsequent clinical diagnosis and treatment.