In order to address the output feedback issue for linear discrete-time systems, this work suggests a brand-new adaptive dynamic programming(ADP) technique based on the internal model principle(IMP). The proposed metho...In order to address the output feedback issue for linear discrete-time systems, this work suggests a brand-new adaptive dynamic programming(ADP) technique based on the internal model principle(IMP). The proposed method, termed as IMP-ADP, does not require complete state feedback-merely the measurement of input and output data. More specifically, based on the IMP, the output control problem can first be converted into a stabilization problem. We then design an observer to reproduce the full state of the system by measuring the inputs and outputs. Moreover, this technique includes both a policy iteration algorithm and a value iteration algorithm to determine the optimal feedback gain without using a dynamic system model. It is important that with this concept one does not need to solve the regulator equation. Finally, this control method was tested on an inverter system of grid-connected LCLs to demonstrate that the proposed method provides the desired performance in terms of both tracking and disturbance rejection.展开更多
为进一步挖掘控制水稻抗倒伏的基因,以524份水稻种质资源为材料,采用GWAS(genome-wide association analysis)鉴定与抗倒伏性状显著关联的位点qRLG7,通过基因表达水平分析和候选基因关联分析确定调控水稻抗倒伏性的候选基因,在分析候选...为进一步挖掘控制水稻抗倒伏的基因,以524份水稻种质资源为材料,采用GWAS(genome-wide association analysis)鉴定与抗倒伏性状显著关联的位点qRLG7,通过基因表达水平分析和候选基因关联分析确定调控水稻抗倒伏性的候选基因,在分析候选基因的表达特征和启动子区自然变异基础上利用CRISPR-Cas9技术构建2个候选基因的突变体家系,考察转基因材料的抗倒伏性状。结果显示,编码肌醇-1-单磷酸酶的2个串联排列基因LOC_Os07g37220和LOC_Os07g37230在离茎秆基部5 cm节间中的表达量显著高于其余候选基因,而且这2个候选基因的表达量在极端抗倒伏和易倒伏2组材料中存在极显著差异;通过候选基因关联分析发现这2个基因启动子区的SNP与离基部5 cm茎秆直径(CD5)的表型值显著关联,且基于显著关联SNP的2种单倍型的CD5表型值存在显著差异,这2个候选基因的2种单倍型启动子活性检测结果也表明2种单倍型之间存在极显著差异;2个基因的功能缺失突变体植株在基部节间抗折力、茎秆厚度、茎秆直径以及株高和穗质量等性状方面与野生型对照存在显著差异。结果表明,候选基因LOC_Os07g37220和LOC_Os07g37230具有一定的抗倒伏功能。展开更多
目的探讨Survivin、胰岛素样生长因子ⅡmRNA结合蛋白3(insulin-like growth factorⅡmRNA-binding protein 3,IMP3)及Claudin1在浆膜腔积液细胞蜡块中的表达及临床意义。方法收集我院病理科2017年2月~2021年11月行免疫组化检查且临床资...目的探讨Survivin、胰岛素样生长因子ⅡmRNA结合蛋白3(insulin-like growth factorⅡmRNA-binding protein 3,IMP3)及Claudin1在浆膜腔积液细胞蜡块中的表达及临床意义。方法收集我院病理科2017年2月~2021年11月行免疫组化检查且临床资料齐全的浆膜腔积液细胞块95例,其中恶性84例,良性11例(对照组)。应用免疫组化方法检测浆膜腔积液细胞蜡块中Survivin、IMP3及Claudin1蛋白的表达情况,并对比分析其在良恶性浆膜腔积液以及不同恶性肿瘤中的差异。结果恶性胸膜腔积液病例中胸腔积液53例,腹腔积液31例。肺腺癌41例,消化系统腺癌25例,卵巢恶性肿瘤9例,其他恶性肿瘤9例。与对照组相比,肺腺癌组及消化系统腺癌组IMP3的表达差异具有统计学意义(P<0.05),消化系统腺癌组Claudin1的表达差异具有统计学意义(P<0.05),其他组别Survivin、IMP3及Claudin1的表达与对照组相比差异均无统计学意义(P>0.05)。结论IMP3及Claudin1在恶性浆膜腔积液判断是否为消化系统腺癌来源时具有鉴别意义,IMP3在肺腺癌来源具有鉴别意义。展开更多
Inosine monophosphate(IMP),as a critical umami substance,is one of the most important indicators for evaluating the quality of meat products.Here,a sensitive electrochemiluminescence(ECL)biosensor based on graphdiyne(...Inosine monophosphate(IMP),as a critical umami substance,is one of the most important indicators for evaluating the quality of meat products.Here,a sensitive electrochemiluminescence(ECL)biosensor based on graphdiyne(GDY)/AuNPs/luminol nanocomposites was constructed to detect IMP.The GDY/AuNPs/luminol nanocomposites were synthesized by using simple one-pot method.GDY utilized its 2D framework to disperse and fix gold nanoparticles,which inhibited the agglomeration of gold nanoparticles and greatly improved its stability and catalytic properties.Importantly,GDY/AuNPs/luminol nanocomposites showed excellent catalytic ability and superior ECL activity towards luminol-H_(2)O_(2) systems due to the synergistic effect of GDY and AuNPs.Under optimal conditions,the prepared biosensor exhibited a wide linear range from 0.01 g/L to 20 g/L,a satisfactory limit detection of 0.0013 g/L,as well as an excellent specificity.Moreover,we carried out the precise analysis of IMP in actual meat samples with acceptable results compared to the liquid chromatography.We believe that this work could offer an efficient ECL platform for accurate and reliable report of IMP levels,which is significant for maintaining food quality and safety.展开更多
The characteristics of deposition of chicken IMP and IMF were investigated in this experiment. Arbor Acres (AA) and Beijing Fatty Chickens (n=200, respectively) were raised under the same condition and were slaughtere...The characteristics of deposition of chicken IMP and IMF were investigated in this experiment. Arbor Acres (AA) and Beijing Fatty Chickens (n=200, respectively) were raised under the same condition and were slaughtered at 28 d, 56 d and 90 d to assay the content of IMP and IMF in breast and leg muscle. The results showed that the IMP content of Beijing Fatty Chicken was significantly higher than that of AA (P<0.01), and also significant difference existed between them in IMF (P<0.01). The IMP content in breast muscle was higher than that in leg muscle (P<0.01), while the IMF was inverse (P<0.01). IMP content of female was a little bit higher than that of male (P>0.05). IMF content varied with growth rate, and showed no association with sex. IMF content increased with age, while IMP did not.展开更多
基金supported by the National Science Fund for Distinguished Young Scholars (62225303)the Fundamental Research Funds for the Central Universities (buctrc202201)+1 种基金China Scholarship Council,and High Performance Computing PlatformCollege of Information Science and Technology,Beijing University of Chemical Technology。
文摘In order to address the output feedback issue for linear discrete-time systems, this work suggests a brand-new adaptive dynamic programming(ADP) technique based on the internal model principle(IMP). The proposed method, termed as IMP-ADP, does not require complete state feedback-merely the measurement of input and output data. More specifically, based on the IMP, the output control problem can first be converted into a stabilization problem. We then design an observer to reproduce the full state of the system by measuring the inputs and outputs. Moreover, this technique includes both a policy iteration algorithm and a value iteration algorithm to determine the optimal feedback gain without using a dynamic system model. It is important that with this concept one does not need to solve the regulator equation. Finally, this control method was tested on an inverter system of grid-connected LCLs to demonstrate that the proposed method provides the desired performance in terms of both tracking and disturbance rejection.
文摘为进一步挖掘控制水稻抗倒伏的基因,以524份水稻种质资源为材料,采用GWAS(genome-wide association analysis)鉴定与抗倒伏性状显著关联的位点qRLG7,通过基因表达水平分析和候选基因关联分析确定调控水稻抗倒伏性的候选基因,在分析候选基因的表达特征和启动子区自然变异基础上利用CRISPR-Cas9技术构建2个候选基因的突变体家系,考察转基因材料的抗倒伏性状。结果显示,编码肌醇-1-单磷酸酶的2个串联排列基因LOC_Os07g37220和LOC_Os07g37230在离茎秆基部5 cm节间中的表达量显著高于其余候选基因,而且这2个候选基因的表达量在极端抗倒伏和易倒伏2组材料中存在极显著差异;通过候选基因关联分析发现这2个基因启动子区的SNP与离基部5 cm茎秆直径(CD5)的表型值显著关联,且基于显著关联SNP的2种单倍型的CD5表型值存在显著差异,这2个候选基因的2种单倍型启动子活性检测结果也表明2种单倍型之间存在极显著差异;2个基因的功能缺失突变体植株在基部节间抗折力、茎秆厚度、茎秆直径以及株高和穗质量等性状方面与野生型对照存在显著差异。结果表明,候选基因LOC_Os07g37220和LOC_Os07g37230具有一定的抗倒伏功能。
文摘目的探讨Survivin、胰岛素样生长因子ⅡmRNA结合蛋白3(insulin-like growth factorⅡmRNA-binding protein 3,IMP3)及Claudin1在浆膜腔积液细胞蜡块中的表达及临床意义。方法收集我院病理科2017年2月~2021年11月行免疫组化检查且临床资料齐全的浆膜腔积液细胞块95例,其中恶性84例,良性11例(对照组)。应用免疫组化方法检测浆膜腔积液细胞蜡块中Survivin、IMP3及Claudin1蛋白的表达情况,并对比分析其在良恶性浆膜腔积液以及不同恶性肿瘤中的差异。结果恶性胸膜腔积液病例中胸腔积液53例,腹腔积液31例。肺腺癌41例,消化系统腺癌25例,卵巢恶性肿瘤9例,其他恶性肿瘤9例。与对照组相比,肺腺癌组及消化系统腺癌组IMP3的表达差异具有统计学意义(P<0.05),消化系统腺癌组Claudin1的表达差异具有统计学意义(P<0.05),其他组别Survivin、IMP3及Claudin1的表达与对照组相比差异均无统计学意义(P>0.05)。结论IMP3及Claudin1在恶性浆膜腔积液判断是否为消化系统腺癌来源时具有鉴别意义,IMP3在肺腺癌来源具有鉴别意义。
基金supported by The National Natural Science Foundation of China(31972198,31622042)The National Key R&D Program of China(2016YFD0400803,2016YFD0401501).
文摘Inosine monophosphate(IMP),as a critical umami substance,is one of the most important indicators for evaluating the quality of meat products.Here,a sensitive electrochemiluminescence(ECL)biosensor based on graphdiyne(GDY)/AuNPs/luminol nanocomposites was constructed to detect IMP.The GDY/AuNPs/luminol nanocomposites were synthesized by using simple one-pot method.GDY utilized its 2D framework to disperse and fix gold nanoparticles,which inhibited the agglomeration of gold nanoparticles and greatly improved its stability and catalytic properties.Importantly,GDY/AuNPs/luminol nanocomposites showed excellent catalytic ability and superior ECL activity towards luminol-H_(2)O_(2) systems due to the synergistic effect of GDY and AuNPs.Under optimal conditions,the prepared biosensor exhibited a wide linear range from 0.01 g/L to 20 g/L,a satisfactory limit detection of 0.0013 g/L,as well as an excellent specificity.Moreover,we carried out the precise analysis of IMP in actual meat samples with acceptable results compared to the liquid chromatography.We believe that this work could offer an efficient ECL platform for accurate and reliable report of IMP levels,which is significant for maintaining food quality and safety.
文摘The characteristics of deposition of chicken IMP and IMF were investigated in this experiment. Arbor Acres (AA) and Beijing Fatty Chickens (n=200, respectively) were raised under the same condition and were slaughtered at 28 d, 56 d and 90 d to assay the content of IMP and IMF in breast and leg muscle. The results showed that the IMP content of Beijing Fatty Chicken was significantly higher than that of AA (P<0.01), and also significant difference existed between them in IMF (P<0.01). The IMP content in breast muscle was higher than that in leg muscle (P<0.01), while the IMF was inverse (P<0.01). IMP content of female was a little bit higher than that of male (P>0.05). IMF content varied with growth rate, and showed no association with sex. IMF content increased with age, while IMP did not.
