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Identification of the fruit of Brucea javanica as an anti-liver fibrosis agent working via SMAD2/SMAD3 and JAK1/STAT3 signaling pathways 被引量:1
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作者 Di Yan Liansheng Qiao +5 位作者 Wenting Huang Xiaoling Zhang Chengmei Ma Quansheng Feng Jing Cheng Lan Xie 《Journal of Pharmaceutical Analysis》 2025年第2期480-483,共4页
Traditional Chinese medicine(TCM)has shown remarkable potential for treating liver fibrosis.In this study,to identify novel TCMs with antifibrotic properties,we used a technique called high-throughput sequencing-based... Traditional Chinese medicine(TCM)has shown remarkable potential for treating liver fibrosis.In this study,to identify novel TCMs with antifibrotic properties,we used a technique called high-throughput sequencing-based high-throughput screening(HTS2),which is based on RNA-mediated oligonucleotide annealing,selection,and ligation followed by sequencing.This technology achieved parallel and quantitative analysis of gene expression in response to thousands of drug treatments[1]. 展开更多
关键词 smad smad treating liver fibrosisin Brucea javanica traditional chinese medicine tcm drug treatments anti liver fibrosis jak stat antifibrotic propertieswe
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Single-cell and spatial transcriptomics reveals an anti-tumor neutrophil subgroup in microwave thermochemotherapy-treated lip cancer 被引量:1
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作者 Bingjun Chen Huayang Fan +8 位作者 Xin Pang Zeliang Shen Rui Gao Haofan Wang Zhenwei Yu Tianjiao Li Mao Li Yaling Tang Xinhua Liang 《International Journal of Oral Science》 2025年第4期529-543,共15页
Microwave thermochemotherapy(MTC)has been applied to treat lip squamous cell carcinoma(LSCC),but a deeper understanding of its therapeutic mechanisms and molecular biology is needed.To address this,we used single-cell... Microwave thermochemotherapy(MTC)has been applied to treat lip squamous cell carcinoma(LSCC),but a deeper understanding of its therapeutic mechanisms and molecular biology is needed.To address this,we used single-cell transcriptomics(scRNA-seq)and spatial transcriptomics(ST)to highlight the pivotal role of tumor-associated neutrophils(TANs)among tumor-infiltrating immune cells and their therapeutic response to MTC.MNDA+TANs with anti-tumor activity(N1-phenotype)are found to be abundantly infiltrated by MTC with benefit of increased blood perfusion,and these TANs are characterized by enhanced cytotoxicity,ameliorated hypoxia,and upregulated IL1B,activating T&NK cells and fibroblasts via IL1B-IL1R.In this highly anti-tumor immunogenic and hypoxia-reversed microenvironment under MTC,fibroblasts accumulated in the tumor front(TF)can recruit N1-TANs via CXCL2-CXCR2 and clear N2-TANs(pro-tumor phenotype)via CXCL12-CXCR4,which results in the aggregation of N1-TANs and extracellular matrix(ECM)deposition.In addition,we construct an N1-TANs marker,MX2,which positively correlates with better prognosis in LSCC patients,and employ deep learning techniques to predict expression of MX2 from hematoxylin-eosin(H&E)-stained images so as to conveniently guide decision making in clinical practice.Collectively,our findings demonstrate that the N1-TANs/fibroblasts defense wall formed in response to MTC effectively combat LSCC. 展开更多
关键词 spatial transcriptomics st molecular biology lip squamous cell carcinoma lscc single cell transcriptomics tumor associated neutrophils microwave thermochemotherapy mtc spatial transcriptomics anti tumor activity
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anti-de Sitter空间中紧致类空超曲面的积分公式及其在常高阶平均曲率下的应用 被引量:8
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作者 徐森林 胡自胜 《数学物理学报(A辑)》 CSCD 北大核心 2007年第2期302-308,共7页
该文对anti-de Sitter空间H1n+1中的紧致类空超曲面建立了积分公式,并应用它们在常高阶平均曲率的条件下讨论了H1n+1中紧致类空超曲面的全脐问题.
关键词 anti—de SITTER空间 类空超曲面 高阶平均曲率 积分公式
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The predictive value of NLR and SII in anti⁃MDA5 antibody⁃positive dermatomyositis with rapidly progressive interstitial lung disease
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作者 CAI Qingqing YOU Hanxiao +7 位作者 WANG Lei LÜChengyin SHI Yumeng QIU Yulu WU Lingyun WANG Fang ZHANG Miaojia TAN Wenfeng 《南京医科大学学报(自然科学版)》 北大核心 2025年第2期196-207,共12页
Objective:To evaluate the predictive value of the neutrophil⁃to⁃lymphocyte ratio(NLR)and the systemic immune⁃inflammation index(SII)in predicting patients with anti⁃melanoma differentiation⁃associated gene 5⁃positive(... Objective:To evaluate the predictive value of the neutrophil⁃to⁃lymphocyte ratio(NLR)and the systemic immune⁃inflammation index(SII)in predicting patients with anti⁃melanoma differentiation⁃associated gene 5⁃positive(anti⁃MDA5+)dermatomyositis(DM)develop into the rapidly progressive interstitial lung disease(RPILD).Methods:We retrospectively analyzed the clinical and laboratory data of 124 anti⁃MDA5+DM patients from the First Affiliated Hospital of Nanjing Medical University between March 2019 and September 2023.We identified independent risk factors associated with the development and mortality of RPILD with the Cox regression analysis,and determined the optimal cut⁃off values for predicting adverse outcomes with the receiver operating characteristic(ROC)curve analysis.Results:Among the 124 patients,36 patients(29.03%)developed RPILD,and 39 patients(31.45%)died during the follow⁃up period.The results of multivariate Cox regression analysis showed that the elevated NLR was an independent risk factor for RPILD development,while the elevated SII expression was independently associated with the increased mortality of RPILD.Based on the ROC curve analysis,NLR>6.12 was a predictor for RPILD,and SII>875.79 was associated with increased mortality risk of RPILD.Conclusion:Both NLR and SII are accessible,cost⁃effective,and reliable prognostic indicators for the prognosis of patients with anti⁃MDA5^(+)DM,providing a valuable guidance for clinical management and risk stratification of the disease. 展开更多
关键词 anti⁃melanoma differentiation⁃associated gene 5⁃positive dermatomyositis neutrophil⁃to⁃lymphocyte ratio rapidly pro⁃gressive interstitial lung disease systemic immune⁃inflammation index
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Retraction Note:Fluoxetine is Neuroprotective in Early Brain Injury via its Anti-inflammatory and Anti-apoptotic Effects in a Rat Experimental Subarachnoid Hemorrhage Model
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作者 Hui-Min Hu Bin Li +6 位作者 Xiao-Dong Wang Yun-Shan Guo Hua Hui Hai-Ping Zhang Biao Wang Da-Geng Huang Ding-Jun Hao 《Neuroscience Bulletin》 2025年第11期2106-2106,共1页
The Editor-in-Chief has retracted this article.Following this publication,concerns were raised regarding the similarity of images presented in this article with previously published articles[1,2].The authors were unab... The Editor-in-Chief has retracted this article.Following this publication,concerns were raised regarding the similarity of images presented in this article with previously published articles[1,2].The authors were unable to provide a satisfactory explanation and raw data for the concerns upon request. 展开更多
关键词 FLUOXETINE anti inflammatory RAT raw data experimental subarachnoid hemorrhage model early brain injury NEUROPROTECTIVE anti apoptotic
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Bonding and anti-bonding orbitals stable electron intensity difference theory
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作者 Xiaobing Lan Hao Lu +5 位作者 Xusheng Wang Qing Li Dongdong Li Jun Chen Peng Wang Guangfu Liao 《Chinese Journal of Catalysis》 2025年第9期6-9,共4页
Surface chemistry plays a critical role in the fields of electrochemistry,heterogeneous catalysis,adsorption,etc.[1–4].The representative D-band center theory reported through Hammer and Nørskov in surface chemi... Surface chemistry plays a critical role in the fields of electrochemistry,heterogeneous catalysis,adsorption,etc.[1–4].The representative D-band center theory reported through Hammer and Nørskov in surface chemistry has been widely used in early studies to predict adsorption strength[5,6].Generally,the adsorption strength of active sites correlates inversely with the downward shift of the D-band center(εd)relative to the Fermi level,as lower-energy positioning increases anti-bonding orbital occupancy,weakening surface interactions(Fig.1(a)). 展开更多
关键词 anti bonding orbitals adsorption surface chemistry ELECTROCHEMISTRY heterogeneous catalysis electron intensity bonding orbitals electrochemistryheterogeneous catalysisadsorptionetc
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Schwarzschild-anti-de Sitter时空中Dirac场的统计熵 被引量:3
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作者 李固强 《数学物理学报(A辑)》 CSCD 北大核心 2007年第6期1054-1058,共5页
利用brick-wall方法,计算了Schwarzschild-anti-de Sitter时空中Dirac场的统计熵,讨论了Dirac粒子的自旋对统计熵的影响.结果表明,忽略远离围绕系统的真空的贡献,Dirac场的统计熵包含与黑洞视界面积成正比的平方反比发散项和对数发散项... 利用brick-wall方法,计算了Schwarzschild-anti-de Sitter时空中Dirac场的统计熵,讨论了Dirac粒子的自旋对统计熵的影响.结果表明,忽略远离围绕系统的真空的贡献,Dirac场的统计熵包含与黑洞视界面积成正比的平方反比发散项和对数发散项,整个表达式的结构与黑洞熵的结构不一样.对应于|∧|r2 h的不同取值,对数发散项的贡献呵以为正、负或零. 展开更多
关键词 Schwarzschild—anti—de SITTER时空 brick—wall方法 统计熵.
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Correction:Study of the anti-inflammatory effect of the Traditional Mongolian Medicine Hohgardi-9 in acute lung injury
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作者 Aodeng Qimuge Tegexi Baiyin +9 位作者 Bilige Bilige Temuqile Temuqile Sha-Na Chen Ying-Chun Bai Wuhan Qimuge SiqinSiqin Hugejile Hang Chang-Shan Wang Huricha Baigued De-Zhi Yang 《Traditional Medicine Research》 2025年第7期87-87,共1页
Traditional Medicine Research published an article entitled Study of the anti-inflammatory effect of the Traditional Mongolian Medicine Hohgardi-9 in acute lung injury on 01 August 2023.The author confirmed this arti... Traditional Medicine Research published an article entitled Study of the anti-inflammatory effect of the Traditional Mongolian Medicine Hohgardi-9 in acute lung injury on 01 August 2023.The author confirmed this article’s proof on 31 July 2023 without any questions.But on 06 January 2025,the editorial team found an inconsistency between the number of SD rats purchased(n=20)and the sample size used in the experiment(n=50). 展开更多
关键词 sd rats traditional medicine research traditional mongolian medicine hohgardi anti inflammatory effect acute lung injury
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Clinical settings in which human leukocyte antigen typing is still useful in the diagnosis of celiac disease
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作者 Enrico Schirru Rossano Rossino +4 位作者 Rita D Jores Mara Corpino Sandro Muntoni Francesco Cucca Mauro Congia 《World Journal of Gastroenterology》 2025年第14期6-17,共12页
Celiac disease(CD)is a systemic autoimmune disorder triggered by gluten ingestion ingenetically predisposed individuals.It is characterized by intestinal histological damage and the production of specific autoantibodi... Celiac disease(CD)is a systemic autoimmune disorder triggered by gluten ingestion ingenetically predisposed individuals.It is characterized by intestinal histological damage and the production of specific autoantibodies.The latest European Society for Paediatric Gastroenterology,Hepatology,and Nutrition(ESPGHAN)2020 guidelines have excluded human leukocyte antigen(HLA)genotyping from the no-biopsy diagnostic approach due to its weak positive predictive value,limited availability,and high cost in some countries.However,HLA genetic testing remains valuable in certain clinical contexts.This study provided practical indications for when to request and how to interpret HLA genotyping,emphasizing its continued relevance for CD diagnosis in specific cases.We also proposed a strategy for monitoring the risk of developing type 1 diabetes(T1D)in patients with CD,based on the risk stratification carried by different HLA genotypes.A retrospective analysis of 746 patients with CD and 627 controls was conducted at our hospital starting in2012,when HLA genotyping became mandatory for the diagnosis of CD.We identified key clinical scenarios where HLA testing remains useful.Several high risk HLA-DQ genotypes strongly associated with CD were highlighted,including HLA-DQ2.5/HLA-DQ2.2and HLA-DQ2.5/HLA-DQ2.5.Notably,while the HLA-DQ2.5/HLA-DQ2.2 genotype is linked to CD,it appears to confer protection against T1D.To support clinical practice,we presented a table clarifying commonly used HLA terminology,and another summarized the main clinical situations in which HLAgenotyping should still be considered.These findings underscore the dual role of HLA testing:Not only can it help rule out CD in selected cases,but it also identifies patients with CD at risk for T1D,guiding personalized monitoring strategies. 展开更多
关键词 Human leukocyte antigens Celiac disease Type 1 diabetes GUIDELINES anti tissue transglutaminase type 2
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A rare case of repetitive bilateral suprachoroidal expulsive hemorrhage after anti-glaucoma surgeries
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作者 Xian Zhang Rong Liu +3 位作者 Yang-Yang Du Chao Ye Ke Liu Yun Li 《International Journal of Ophthalmology(English edition)》 2025年第9期1803-1805,共3页
Dear Editor,We present the reported case of repetitive bilateral suprachoroidal expulsive hemorrhage(SEH)after anti-glaucoma surgeries.SEH is a rare but potentially devastating complication of intraocular surgery.Long... Dear Editor,We present the reported case of repetitive bilateral suprachoroidal expulsive hemorrhage(SEH)after anti-glaucoma surgeries.SEH is a rare but potentially devastating complication of intraocular surgery.Long-term ocular hypertension,high myopia,older age,arterial sclerosis,and aphakia have been reported as preoperative risk factors for developing SEH^([1]).The prognosis for the visual acuity is poor without proper management.A suggested time for surgical drainage is said to be 10-14d when the hemorrhagic clot begins to liquefy^([2]). 展开更多
关键词 surgical drainage repetitive bilateral suprachoroidal expulsive hemorrhage APHAKIA suprachoroidal expulsive hemorrhage seh anti glaucoma surgeries high myopia arterial sclerosis older age
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DB-1310,a HER3-targeting antibody-drug conjugate,has synergistic anti-tumor activity with trastuzumab in HER2-and HER3-expressing breast cancer
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作者 Xi Li Liwen Liang +2 位作者 Zhongyuan Zhu Haiqing Hua Yang Qiu 《Cancer Biology & Medicine》 2025年第3期231-236,共6页
DB-1310 and trastuzumab synergistically inhibit breast cancer(BC)cell proliferation in vitro.HER3 overexpression has been described in patients with HER2-positive BC1.We determined the levels of HER2 and HER3 expressi... DB-1310 and trastuzumab synergistically inhibit breast cancer(BC)cell proliferation in vitro.HER3 overexpression has been described in patients with HER2-positive BC1.We determined the levels of HER2 and HER3 expression in BC using RNA-seq data from 1,082 BC patient samples in the TCGA dataset and 67 BC cell lines in the CCLE database(Supplementary material 1). 展开更多
关键词 synergistic anti tumor activity her targeting antibody drug conjugate tcga dataset TRASTUZUMAB DB her her expressing breast cancer her her expression
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Mouse model of anti-RANKL discontinuation reveals reduced bone mass and quality through disruption of bone remodeling
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作者 Koji Ishikawa Soji Tani +8 位作者 Nobuhiro Sakai Yoshifumi Kudo Hideyo Horiuchi Hiromi Kimura-Suda Masamichi Takami Mayumi Tsuji Katsunori Inagaki Yuji Kiuchi Takako Negishi-Koga 《Bone Research》 2025年第4期1001-1014,共14页
The discontinuation of denosumab[antibody targeting receptor activator of nuclear factor kappa B ligand(RANKL)]therapy may increase the risk of multiple vertebral fractures;however,the underlying pathophysiology is la... The discontinuation of denosumab[antibody targeting receptor activator of nuclear factor kappa B ligand(RANKL)]therapy may increase the risk of multiple vertebral fractures;however,the underlying pathophysiology is largely unknown.In patients who underwent discontinuation after multiple injections of denosumab,the levels of tartrate-resistant acid phosphatase 5b increased compared to pretreatment levels,indicating a phenomenon known as“overshoot.”The rate of decrease in bone mineral density during the withdrawal period was higher than the rate of decrease associated with aging,suggesting that the physiological bone metabolism had broken down.Overshoot and significant bone loss were also observed in mice receiving continuous administration of anti-RANKL antibody after treatment was interrupted,resembling the original pathology.In mice long out of overshoot,bone resorption recovered,but osteoblast numbers and bone formation remained markedly reduced.The bone marrow exhibited a significant reduction in stem cell(SC)antigen 1-and platelet-derived growth factor receptor alpha-expressing osteoblast progenitors(PαS cells)and alkaline phosphatase-positive early osteoblasts.Just before the overshoot phase,the osteoclast precursor cell population expands and RANKL-bearing extracellular vesicles(EVs)became abundant in the serum,leading to robust osteoclastogenesis after cessation of anti-RANKL treatment.Thus,accelerated bone resorption due to the accumulation of RANKLbearing EVs and long-term suppression of bone formation uncoupled from bone resorption leads to the severe bone loss characteristic of denosumab discontinuation. 展开更多
关键词 vertebral fractureshoweverthe decrease bone mineral density bone mass tartrate resistant acid phosphatase b mouse model anti RANKL discontinuation bone remodeling bone quality
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First-Principles Study of Layered Anti-Perovskite Cathode Materials for Sodium-Ion Batteries
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作者 Xi-Ping Wu Yu Zhang +7 位作者 Yang-Zhong Li Tao Lin Qin-Rui Zheng Rui Lin Jian-Ting Liu Qi-Men Xu Di-Xing Ni Li shuai 《Chinese Physics Letters》 2025年第8期354-369,共16页
Sodium-ion batteries have emerged as promising alternatives to lithium-ion batteries due to their abundant raw material reserves,low cost,enhanced safety,and environmental sustainability.Na_(2)Fe_(2)OS_(2),featuring a... Sodium-ion batteries have emerged as promising alternatives to lithium-ion batteries due to their abundant raw material reserves,low cost,enhanced safety,and environmental sustainability.Na_(2)Fe_(2)OS_(2),featuring a layered anti-perovskite structure,has attracted significant interest for its high capacity and facile synthesis.In this study,density functional theory calculations were performed to systematically investigate the phase stability,ionic conductivity,and voltage characteristics of Na_(2)Fe_(2)OS_(2)as a model system for anti-perovskite layered cathode materials.The compound exhibits excellent phase stability,and its equilibrium potential was calculated for the series Na_(x)Fe_(2)OCh_(2)(0<±<2)(where Ch represents chalcogenides).Naion transport analysis using the climbing image nudged elastic band method reveals a relatively low migration barrier(~0.47eV)along a dingonal pathway,indicating efficient Na^(+)mobility.To expand the materials design space,we systematically explored the effects of substituting Fe with various transition metals and replacing S with Se in NaaTM_(2)OCh_(2)structures.Among the variants studied,Na_(2)Mn_(2)OS_(2) demonstrates the most favorable combination of high voltage(~2.51V),robust phase stability,and superior energy density(~427 W-h/kg).This comprehensive comparison of transition metal substitutions provides vnluable insights for the rational design and experimental development of next-generation anti-perovskite layered cathode materials for sodium-ion batteries. 展开更多
关键词 phase stabilityionic conductivityand phase stability layered anti perovskite cathode materials transition metal substitutions voltage characteristics sodium ion batteries density functional theory functional theory calculations
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控制系统Anti-Windup设计综述 被引量:46
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作者 杨明 徐殿国 贵献国 《电机与控制学报》 EI CSCD 北大核心 2006年第6期622-626,631,共6页
综述了Anti-W indup算法的发展过程,以及大致的分类情况和各种方法的应用特点。不同角度定义的W indup现象会产生不同类型的Anti-W indup算法结构,大致可将其分为:线性结构和非线性结构算法。线性结构算法又产生两种主要类型:传统的Anti... 综述了Anti-W indup算法的发展过程,以及大致的分类情况和各种方法的应用特点。不同角度定义的W indup现象会产生不同类型的Anti-W indup算法结构,大致可将其分为:线性结构和非线性结构算法。线性结构算法又产生两种主要类型:传统的Anti-resetW indup和条件作用。线性结构Anti-W indup算法一般符合两步法设计原则,但由于其分步设计原则,忽略了线性控制器和非线性补偿环节是同时作用在系统闭环响应中,造成了系统综合困难,即补偿后的系统性能没有明确的数学表达。针对这一问题,众多学者在线性结构算法的基础上提出了不同的设计方案,理论上取得了许多成果,可以在补偿器设计的同时得到预期的动静态性能。但是,由于事先设计的算法过于复杂,制约其在应用领域的推广,因而应用最为广泛的还是传统的Anti-resetwindup算法。如何简化事先设计算法推广其应用或改进传统的Anti-resetwindup算法直接获取最优补偿效果将是今后该领域研究的主要方向。 展开更多
关键词 anti—Windup 饱和非线性 系统综合
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感应电机直接转矩控制系统的变结构anti-windup控制器 被引量:11
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作者 张兴华 聂晶 王德明 《电机与控制学报》 EI CSCD 北大核心 2013年第1期77-81,共5页
针对感应电机直接转矩控制系统转速控制环节的非线性饱和特性,提出了一种变结构an-ti-windup PI速度控制器来提高转速控制性能。该方法结合了条件积分法与反计算法的优点,根据PI控制器的输出是否饱和,对积分状态分别进行控制。当PI控制... 针对感应电机直接转矩控制系统转速控制环节的非线性饱和特性,提出了一种变结构an-ti-windup PI速度控制器来提高转速控制性能。该方法结合了条件积分法与反计算法的优点,根据PI控制器的输出是否饱和,对积分状态分别进行控制。当PI控制器在饱和非线性区运行时,将饱和限幅环节的输入与输出量的差值反馈到积分器的输入端,以减小积分状态的变化速率。使控制器在出现饱和时,能够适时快速地退出饱和区,达到减小转速响应的超调量,加快响应速度的目的。仿真和实验结果表明该控制器能有效抑制系统的积分windup现象,控制性能优于传统的anti-windup PI控制器。 展开更多
关键词 感应电机 饱和非线性 变结构 anti—windup控制 转速调节
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孕期注射乙肝免疫球蛋白阻断HBV宫内感染及对婴儿产生anti-HBs的影响 被引量:10
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作者 李淑红 贾蓓 +2 位作者 孙红 董梅 刘志芬 《中国妇幼保健》 CAS 北大核心 2013年第4期639-643,共5页
目的:探讨孕期注射乙肝免疫球蛋白(hepatitis B immunoglobulin,HBIG)对HBV母婴传播的影响及婴儿对乙肝疫苗免疫应答情况。方法:以HBsAg阳性孕妇及其新生儿为研究对象,孕期注射乙肝免疫球蛋白的孕妇300例及新生儿为实验组,未使用者80例... 目的:探讨孕期注射乙肝免疫球蛋白(hepatitis B immunoglobulin,HBIG)对HBV母婴传播的影响及婴儿对乙肝疫苗免疫应答情况。方法:以HBsAg阳性孕妇及其新生儿为研究对象,孕期注射乙肝免疫球蛋白的孕妇300例及新生儿为实验组,未使用者80例为对照组,比较两组新生儿宫内感染率及出生时和7个月抗体产生情况。结果:孕期注射HBIG组与未注射组新生儿宫内感染率分别为5.33%(16/300)和1.25%(1/80),差异无统计学意义(χ2=2.464,P>0.05);孕期注射HBIG组与未注射组新生儿出生时anti-HBs阳性率分别为10.33%(31/300)和1.25%(1/80),差异有统计学意义(χ2=6.757,P<0.05),7个月龄anti-HBs产生率为96.12%(124/129)和95.35%(41/43),差异无统计学意义(χ2=0.049,P>0.05);出生时anti-HBs阳性的新生儿25例,7个月复查均产生anti-HBs,而出生时anti-HBs阴性或弱阳性的147例婴儿,7个月复查有7例婴儿anti-HBs仍为阴性或弱阳性,但差异无统计学意义(χ2=0.321,P>0.05)。结论:孕期注射HBIG不能降低HBV宫内感染率,可提高新生儿出生时anti-HBs阳性率,但对7个月anti-HBs产生率无影响。 展开更多
关键词 病毒性乙型肝炎HBV宫内感染HBIG anti—HBs
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反向克隆法大鼠anti-ERK2腺病毒载体构建 被引量:4
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作者 董冲 刘云 +5 位作者 宫念樵 陈曦林 唐莉 朱国超 陈知水 叶启发 《中国现代医学杂志》 CAS CSCD 北大核心 2006年第1期21-23,共3页
目的正义基因反向克隆法构建大鼠anti-ERK2腺病毒载体。方法酶切质粒p3XFLAG-CMV7.1-ERK2,得到ERK2cDNA片段,连接到T载体进行测序,经测序正确反向克隆法插入质粒pShuttle中,最后转入AdEasy(tm)XLAdenoviralVectorSystem系统中得到anti-E... 目的正义基因反向克隆法构建大鼠anti-ERK2腺病毒载体。方法酶切质粒p3XFLAG-CMV7.1-ERK2,得到ERK2cDNA片段,连接到T载体进行测序,经测序正确反向克隆法插入质粒pShuttle中,最后转入AdEasy(tm)XLAdenoviralVectorSystem系统中得到anti-ERK2基因腺病毒载体。结果DraI和NotI双酶切鉴定anti-ERK2基因腺病毒载体,发现插入的基因序列与插入方向均符合预期目标。结论成功构建了大鼠anti-ERK2腺病毒载体,为研究移植排斥中ERK2基因治疗的作用提供了良好工具。 展开更多
关键词 反向克隆 anti—ERK2 腺病毒载体
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含不同Anti-Waxy基因拷贝数的稻米直链淀粉含量分析 被引量:2
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作者 尹中明 周永国 +1 位作者 徐申中 李建粤 《西北植物学报》 CAS CSCD 北大核心 2007年第10期2108-2111,共4页
将含单拷贝Anti-Waxy基因的纯合植株分别作为父本或母本进行正反交,获得两组含双拷贝Anti-Waxy基因的杂交后代,分析了未转基因对照、转基因亲本及两组杂交后代糙米直链淀粉含量以揭示不同Anti-Waxy基因拷贝数对降低稻米直链淀粉含量程... 将含单拷贝Anti-Waxy基因的纯合植株分别作为父本或母本进行正反交,获得两组含双拷贝Anti-Waxy基因的杂交后代,分析了未转基因对照、转基因亲本及两组杂交后代糙米直链淀粉含量以揭示不同Anti-Waxy基因拷贝数对降低稻米直链淀粉含量程度的影响.结果显示,2个单拷贝转基因水稻糙米直链淀粉平均含量分别为10.72%和11.13%,比对照分别降低17.98%和14.84%;两组正交和反交杂交后代糙米直链淀粉平均含量分别为8.96%和8.23%,其平均值为8.60%,比2个转基因杂交亲本糙米直链淀粉含量分别降低19.78%和22.73%,比对照降低了34.20%.结果表明,增加转基因水稻基因组中Anti-Waxy基因拷贝数在一定程度上能够进一步降低稻米直链淀粉含量,通过将独立转化获得同品种转基因植株之间杂交可以成为获得高表达转基因植物的途径. 展开更多
关键词 水稻 anti—Waxy基因 外源基因拷贝数 杂交 糙米直链淀粉含量
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基于3,5-二溴水杨醛席夫碱镍配合物-氧化石墨烯电化学免疫传感器检测Anti-IgG含量的研究 被引量:2
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作者 赖丽燕 刘峥 +2 位作者 李巍 周昱 黄红霞 《分析科学学报》 CAS CSCD 北大核心 2014年第4期481-484,共4页
应用物理吸附法将羊抗人IgG抗原直接固定于3,5-二溴水杨醛席夫碱镍配合物-氧化石墨烯修饰的金电极表面,制备电化学免疫传感器。采用循环伏安法和交流阻抗法对传感器进行表征,结果表明该传感器适合检测Anti-IgG浓度。同时探讨了缓冲液pH... 应用物理吸附法将羊抗人IgG抗原直接固定于3,5-二溴水杨醛席夫碱镍配合物-氧化石墨烯修饰的金电极表面,制备电化学免疫传感器。采用循环伏安法和交流阻抗法对传感器进行表征,结果表明该传感器适合检测Anti-IgG浓度。同时探讨了缓冲液pH值、扫描速度、免疫反应温度、抗原与抗体配比对循环伏安峰电流的影响,结果表明在5-100mV/s扫速范围内,峰电流与扫速呈线性。孵育最优条件为25℃,h-IgG与Anti-IgG配比为1∶1。循环伏安法研究还表明Anti-IgG浓度在0.01-260μg/L范围内,线性关系良好,相关系数r^2=0.993,检出限(S/N=3)为0.006μg/L,据此建立了检测Anti-IgG浓度的新方法。 展开更多
关键词 氧化石墨烯 3 5-二溴水杨醛席夫碱镍配合物 anti—IgG 电化学免疫传感器
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