现关于中医药干预慢性萎缩性胃炎(chronic atrophic gastritis,CAG)的临床研究和基础实验研究已成为消化系统疾病中的研究热点。Janus蛋白酪氨酸激酶(Janus protein tyrosine kinase,JAK)/信号转导子与激活子(signal transducer and act...现关于中医药干预慢性萎缩性胃炎(chronic atrophic gastritis,CAG)的临床研究和基础实验研究已成为消化系统疾病中的研究热点。Janus蛋白酪氨酸激酶(Janus protein tyrosine kinase,JAK)/信号转导子与激活子(signal transducer and activator of transcription,STAT)信号通路的状态与消化道疾病的发生与进展十分密切。诸多研究表明中药可通过多种机制调控该信号通路干预CAG的进展,大致可分为以下几个方面:通过抑制JAK2/STAT3、核转录因子-κB/STAT1通路激活或促使白介素-4(interleukin-4,IL-4)/STAT6激活达到干预CAG的目的;同时降低IL-6、IL-1β等相关炎症因子表达,不仅可抑制相关通路激活,亦可起到减轻胃黏膜炎症的作用;再者上调抑癌基因p21、下调原癌基因表达防止受损的胃黏膜进一步恶化;最后还可调节生存素、B淋巴细胞瘤2家族调控细胞凋亡/增殖平衡机制逆转胃黏膜萎缩及肠化生。展开更多
There is limited information on carbon sequestration efficiency(CSE)of soil aggregates in upland and paddy soils under long-term fertilization regimes.In a red soil region of southern China,an upland soil experiment s...There is limited information on carbon sequestration efficiency(CSE)of soil aggregates in upland and paddy soils under long-term fertilization regimes.In a red soil region of southern China,an upland soil experiment started in 1986 and a paddy soil experiment commenced in 1981.These experiments were conducted using different fertilization treatments.After 30 years,soil organic carbon(SOC)content and stock of different aggregate components were analyzed.The results showed that the SOC contents and stocks in upland soil were lower than in paddy soil.In both upland and paddy soils,the SOC contents and stocks of all aggregate components in NPKM(combined treatment with chemical nitrogen(N),phosphorus(P),potassium(K)fertilizers and manure)were the highest among all treatments.Compared with CK(no fertilizer),SOC content of all aggregate components in NPKM was increased by 13.21–63.11%and 19.13–73.33%in upland and paddy soils,respectively.Meanwhile,the change rates in SOC stock of all aggregate components in upland soil were lower than in paddy soil,although the change rate of SOC stock of all aggregate components in NPKM was higher than in other treatments.Furthermore,a linear equation could fit the relationships between carbon(C)input and change rate of SOC stock(P<0.05).Results indicated that the sum of CSE from all aggregate components in upland soil(16.02%)was higher than that of paddy soil(15.12%)in the same climatic condition and from the same parent material.However,the CSEs from all aggregates were higher than that of bulk soil,although the result from bulk soil also showed that the CSE of upland soil was higher than that of paddy soil.展开更多
文摘现关于中医药干预慢性萎缩性胃炎(chronic atrophic gastritis,CAG)的临床研究和基础实验研究已成为消化系统疾病中的研究热点。Janus蛋白酪氨酸激酶(Janus protein tyrosine kinase,JAK)/信号转导子与激活子(signal transducer and activator of transcription,STAT)信号通路的状态与消化道疾病的发生与进展十分密切。诸多研究表明中药可通过多种机制调控该信号通路干预CAG的进展,大致可分为以下几个方面:通过抑制JAK2/STAT3、核转录因子-κB/STAT1通路激活或促使白介素-4(interleukin-4,IL-4)/STAT6激活达到干预CAG的目的;同时降低IL-6、IL-1β等相关炎症因子表达,不仅可抑制相关通路激活,亦可起到减轻胃黏膜炎症的作用;再者上调抑癌基因p21、下调原癌基因表达防止受损的胃黏膜进一步恶化;最后还可调节生存素、B淋巴细胞瘤2家族调控细胞凋亡/增殖平衡机制逆转胃黏膜萎缩及肠化生。
文摘随着信息技术的发展,设计越来越复杂,嵌入式存储器在SoC芯片面积中所占的比例越来越大,由于本身单元密度很高,嵌入式存储器容易造成硅片缺陷,降低了芯片的成品率.针对投影仪梯形校正项目嵌入的存储器模块存在的故障等问题,讨论了基于M arch C+算法的B IST的设计与实现,并对B IST进行改进,完成对存储器故障的检测和定位,整个测试故障覆盖率接近100%、测试时间为35.546 m s.
基金supported by the National Key Research and Development Program of China (2016YFD0200101 and 2016YFD0300901)the National Natural Science Foundation of China (41671301 and 41371293)the Innovation Plan of Scientific and Research in Modern Agriculture, Jiangxi Province, China (JXXTCX2015003-005)
文摘There is limited information on carbon sequestration efficiency(CSE)of soil aggregates in upland and paddy soils under long-term fertilization regimes.In a red soil region of southern China,an upland soil experiment started in 1986 and a paddy soil experiment commenced in 1981.These experiments were conducted using different fertilization treatments.After 30 years,soil organic carbon(SOC)content and stock of different aggregate components were analyzed.The results showed that the SOC contents and stocks in upland soil were lower than in paddy soil.In both upland and paddy soils,the SOC contents and stocks of all aggregate components in NPKM(combined treatment with chemical nitrogen(N),phosphorus(P),potassium(K)fertilizers and manure)were the highest among all treatments.Compared with CK(no fertilizer),SOC content of all aggregate components in NPKM was increased by 13.21–63.11%and 19.13–73.33%in upland and paddy soils,respectively.Meanwhile,the change rates in SOC stock of all aggregate components in upland soil were lower than in paddy soil,although the change rate of SOC stock of all aggregate components in NPKM was higher than in other treatments.Furthermore,a linear equation could fit the relationships between carbon(C)input and change rate of SOC stock(P<0.05).Results indicated that the sum of CSE from all aggregate components in upland soil(16.02%)was higher than that of paddy soil(15.12%)in the same climatic condition and from the same parent material.However,the CSEs from all aggregates were higher than that of bulk soil,although the result from bulk soil also showed that the CSE of upland soil was higher than that of paddy soil.
