西安是关中盆地经济发展的核心城市,特殊的地形和工业发展导致冬季细颗粒物(PM2.5)污染严重,制定科学合理的治理措施迫切需要明确PM2.5的来源.本文基于空气质量模式CAMx(Comprehensive Air Quality Model with extensions)、颗粒物源解...西安是关中盆地经济发展的核心城市,特殊的地形和工业发展导致冬季细颗粒物(PM2.5)污染严重,制定科学合理的治理措施迫切需要明确PM2.5的来源.本文基于空气质量模式CAMx(Comprehensive Air Quality Model with extensions)、颗粒物源解析模块PSAT(Particulate Source Apportionment Technology)及融入多种来源数据后建立的排放清单来量化西安地区本地及区域传输贡献.在本文研究的重污染过程中,模式的模拟精度合理,模拟与观测值相关系数为0.78,FAC2达到95%.PSAT模块在本次重污染过程中对西安PM2.5的来源解析结果显示:在城区,西安本地为最大的排放源区,日均贡献率均大于60%,其次为咸阳8%,省外的传输为6%;在郊区,西安本地的贡献减少,传输贡献增加,其中阎良区传输贡献达到83%.对西安城区的一次细颗粒物面源排放量减少50%模拟后,城区和郊区来自周边区域渭南或咸阳的贡献率有6%~8%的增长.该研究结果表明需要从本地排放管控和区域联防两方面来改善西安地区的空气质量.展开更多
Prostate cancer is a public health problem in Senegal. It is one of the most common cancers in men and can be detected early by PSA measurement and confirmed by the pathological study which specifies the histological ...Prostate cancer is a public health problem in Senegal. It is one of the most common cancers in men and can be detected early by PSA measurement and confirmed by the pathological study which specifies the histological type and evaluates the histoprognostic scores (Gleason and pTNM). We did not find any anatomopathological study highlighting a link between the PSA t rate and histoprognostic Gleason scores in Senegal. Objective: We carried out this work aimed at determining whether there is a correlation between the PSA t rate and the histoprognostic Gleason score, in our context. Methodology: This is a retrospective, descriptive and analytical study conducted from January 2013 to October 2021, based on histologically proven prostate cancer cases with a specified PSA level, diagnosed in the pathological anatomy and cytology laboratory of Aristide Le Dantec hospital. Results: We identified 654 cases of prostate cancer. The average age was 68.59 ± 5.8 years with extremes of 40 years to 92 years. More than half of our cohort presented a clinical stage T2c, i.e. 56.94%. The average prostate volume on ultrasound was 81.81 ± 66 cc. The median PSA t was 110.5 ng/ml, with extremes ranging from 2 ng/ml to 74,770 ng/ml. Prostatic adenocarcinoma was the only histological type found in our patients. There was a predominance of Gleason score 6 (PICU grade group 1) observed in 35.17% of patients. Well-differentiated cancers were predominant and represented 35.17%. There was a statistically significant positive correlation between PSA t level and Gleason score (Spearman’s Rho = 0.305, p = 0.000). Conclusion: This study shows that in the Senegalese population, in patients with prostate cancer, the higher the PSA t level rises above normal, the higher the Gleason score tends to be.展开更多
目的:对比分析PSA移行带密度(PSAT)与前列腺特异抗原密度(prostate specific antigen density,PSAD)在前列腺癌(PCa)诊断中的临床价值。方法:选取82例疑似PCa患者为研究对象,并采取前列腺穿刺活检,对比分析PSAT与PSAD在不同患者中的水...目的:对比分析PSA移行带密度(PSAT)与前列腺特异抗原密度(prostate specific antigen density,PSAD)在前列腺癌(PCa)诊断中的临床价值。方法:选取82例疑似PCa患者为研究对象,并采取前列腺穿刺活检,对比分析PSAT与PSAD在不同患者中的水平。结果:82例受检者经穿刺活检证实12例为PCa,70例为前列腺增生(BPH)。12例PCa患者中PSAT与PSAD指标水平均高于BPH组,差异具有统计学意义(P<0.05)。结论:检测PSAT与PSAD特异性标志物可显著提升PCa的确诊率,其中以PSAT效果最为明显。展开更多
文摘西安是关中盆地经济发展的核心城市,特殊的地形和工业发展导致冬季细颗粒物(PM2.5)污染严重,制定科学合理的治理措施迫切需要明确PM2.5的来源.本文基于空气质量模式CAMx(Comprehensive Air Quality Model with extensions)、颗粒物源解析模块PSAT(Particulate Source Apportionment Technology)及融入多种来源数据后建立的排放清单来量化西安地区本地及区域传输贡献.在本文研究的重污染过程中,模式的模拟精度合理,模拟与观测值相关系数为0.78,FAC2达到95%.PSAT模块在本次重污染过程中对西安PM2.5的来源解析结果显示:在城区,西安本地为最大的排放源区,日均贡献率均大于60%,其次为咸阳8%,省外的传输为6%;在郊区,西安本地的贡献减少,传输贡献增加,其中阎良区传输贡献达到83%.对西安城区的一次细颗粒物面源排放量减少50%模拟后,城区和郊区来自周边区域渭南或咸阳的贡献率有6%~8%的增长.该研究结果表明需要从本地排放管控和区域联防两方面来改善西安地区的空气质量.
文摘Prostate cancer is a public health problem in Senegal. It is one of the most common cancers in men and can be detected early by PSA measurement and confirmed by the pathological study which specifies the histological type and evaluates the histoprognostic scores (Gleason and pTNM). We did not find any anatomopathological study highlighting a link between the PSA t rate and histoprognostic Gleason scores in Senegal. Objective: We carried out this work aimed at determining whether there is a correlation between the PSA t rate and the histoprognostic Gleason score, in our context. Methodology: This is a retrospective, descriptive and analytical study conducted from January 2013 to October 2021, based on histologically proven prostate cancer cases with a specified PSA level, diagnosed in the pathological anatomy and cytology laboratory of Aristide Le Dantec hospital. Results: We identified 654 cases of prostate cancer. The average age was 68.59 ± 5.8 years with extremes of 40 years to 92 years. More than half of our cohort presented a clinical stage T2c, i.e. 56.94%. The average prostate volume on ultrasound was 81.81 ± 66 cc. The median PSA t was 110.5 ng/ml, with extremes ranging from 2 ng/ml to 74,770 ng/ml. Prostatic adenocarcinoma was the only histological type found in our patients. There was a predominance of Gleason score 6 (PICU grade group 1) observed in 35.17% of patients. Well-differentiated cancers were predominant and represented 35.17%. There was a statistically significant positive correlation between PSA t level and Gleason score (Spearman’s Rho = 0.305, p = 0.000). Conclusion: This study shows that in the Senegalese population, in patients with prostate cancer, the higher the PSA t level rises above normal, the higher the Gleason score tends to be.
文摘目的:对比分析PSA移行带密度(PSAT)与前列腺特异抗原密度(prostate specific antigen density,PSAD)在前列腺癌(PCa)诊断中的临床价值。方法:选取82例疑似PCa患者为研究对象,并采取前列腺穿刺活检,对比分析PSAT与PSAD在不同患者中的水平。结果:82例受检者经穿刺活检证实12例为PCa,70例为前列腺增生(BPH)。12例PCa患者中PSAT与PSAD指标水平均高于BPH组,差异具有统计学意义(P<0.05)。结论:检测PSAT与PSAD特异性标志物可显著提升PCa的确诊率,其中以PSAT效果最为明显。
