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OSCILLATOrY SINGULAr INTEGrALS WITH VArIABLE rOUGH KErNEL, Ⅱ

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Analysis in Theory and Applications 2003年第1期19卷 1-13页

作者： tang lin and yang dachun (beijing normal university, china) tang lin and yang dachun department of mathematics beijing normal university beijing 100875 p. r. china beijing normal university Beijing China department of mathematics Beijing Normal University Beijing 100875 China

Let n≥2. In this paper, the author establishes the L2 (rx)-boundedness of some oscillatory singular integrals with variable rough kernels by means of some estimates on hyper geometric functions and confluent hyper ge... 详细信息

关键词： oscillatory singular integral variable rough kernel

CONTINUITY FOr MAXIMAL COMMUTATOrS OF BOCHNEr-rIESZ OpErATOrS WITH BMO FUNCTIONS

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Acta Mathematica Scientia 2001年第3期21卷 339-349页

作者：江寅生唐林杨大春 department of mathematics Xinjiang University Urumqi 830046 China department of mathematics Beijing Normal University Beijing 100875 China

Let p is an element of (n/(n + 1), 1]. The authors investigate the (H-b(p)(r-n), L-p(r-n))-type and (H-b(p,infinity)(r-n), L-p,L-infinity(r-n))-type continuities for the maximal operators associated with the commutators of Bochner-riesz operators with BMO(r-n) functions, where H-b(p)(r-n) and H-b(p,infinity)(r-n) are, respectively, the variants of the standard Hardy spaces and the standard weak Hardy spaces.

关键词： Bochner-riesz operator BMO(r-n) commutator maximal operator Hardy space and weak Hardy space

DEAD-box helicase 17(DDX17)protects cardiac function by promoting mitochondrial homeostasis in heart failure

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2774-2790页

作者： Mingjing Yan Junpeng Gao Ming Lan Que Wang Yuan Cao Yuxuan Zheng Yao yang Wenlin Li Xiaoxue Yu Xiuqing Huang lin Dou Bing Liu Junmeng Liu Hongqiang Cheng Kunfu Ouyang Kun Xu Shenghui Sun Jin Liu Weiqing tang Xiyue Zhang Yong Man Liang Sun Jianping Cai Qing He Fuchou tang Jian Li Tao Shen The Key Laboratory of Geriatrics Beijing Institute of GeriatricsInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing Hospital/National Center of Gerontology of National Health CommissionBeijing 100730China peking university Fifth School of Clinical Medicine Beijing 100730China department of Laboratory Medicine Huashan HospitalShanghai Medical CollegeFudan UniversityShanghai 200040China Biomedical pioneering Innovation Center School of Life SciencesPeking UniversityBeijing 100871China Emergency Center Zhongnan Hospital of Wuhan UniversityWuhan 430071China department of Cardiology Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Graduate School of peking Union Medical College Beijing 100730China department of Health Care Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing 100730China peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China department of pathology and pathophysiology and department of Cardiology at Sir run run Shaw Hospital Zhejiang University School of MedicineHangzhou 310058China department of Cardiovascular Surgery Peking University Shenzhen HospitalShenzhen 518036China Experimental Technology Center for Life Sciences at beijing normal university Beijing 100875China

DEAD-box helicase 17(DDX17)is a typical member of the DEAD-box family with transcriptional cofactor *** DDX17 is abundantly expressed in the myocardium,its role in heart is not fully *** generated cardiomyocyte-specific Ddx17-knockout mice(Ddx17-cKO),cardiomyocyte-specific Ddx17 transgenic mice(Ddx17-Tg),and various models of cardiomyocyte injury and heart failure(HF).DDX17 is downregulated in the myocardium of mouse models of heart failure and cardiomyocyte ***-specific knockout of Ddx17 promotes autophagic flux blockage and cardiomyocyte apoptosis,leading to progressive cardiac dysfunction,maladaptive remodeling and progression to heart *** of DDX17 expression in cardiomyocytes protects cardiac function under pathological *** studies showed that DDX17 can bind to the transcriptional repressor B-cell lymphoma 6(BCL6)and inhibit the expression of dynamin-related protein 1(Drp1).When DDX17 expression is reduced,transcriptional repression of BCL6 is attenuated,leading to increased Drp1 expression and mitochondrial fission,which in turn leads to impaired mitochondrial homeostasis and heart *** also investigated the correlation of DDX17 expression with cardiac function and Drp1 expression in myocardial biopsy samples from patients with heart *** findings suggest that DDX17 protects cardiac function by promoting mitochondrial homeostasis through the BCL6-Drp1 pathway in heart failure.

关键词： DDX17 homeostasis cardiac

多线性算子在Herz型Hardy空间上的有界性

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数学学报（中文版） 2001年第5期44卷 861-868页

作者：唐林杨大春北京师范大学数学系北京100875

本文证明了Ｒｎ上奇异积分乘积之有限和的多线性算子是从ＨＫｑ１α１，ｐ１（Ｒｎ）×… ×ＨＫｑｋαｋ，ｐｋ（Ｒｎ）到ＨＫｑα，ｐ（Ｒｎ）有界的，如果它满足由目标空间所确定的直到一定阶的消失矩条件．这些多线性算子所满足的... 详细信息

本文证明了Ｒｎ上奇异积分乘积之有限和的多线性算子是从ＨＫｑ１α１，ｐ１（Ｒｎ）×… ×ＨＫｑｋαｋ，ｐｋ（Ｒｎ）到ＨＫｑα，ｐ（Ｒｎ）有界的，如果它满足由目标空间所确定的直到一定阶的消失矩条件．这些多线性算子所满足的消失矩条件，当αｊ≥０时也是必要的．而且，这里所考虑的奇异积分包括Ｃａｌｄｅｒｏｎ－Ｚｙｇｍｕｎｄ奇异积分及任意阶的分数次积分．

关键词：多线性算子 Calderón-Zygmund算子分数次积分乘子 Hardy空间奇异积分乘积 Herz空间

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沿旋转曲面奇异积分的有界性(英文)

数学进展 2003年第6期32卷 677-682页

作者：潘翼彪唐林杨大春 Dept of Math. Univ. of Pittsburgh PAUSA 15260 北京师范大学数学系

＃本文建立了具有粗糙核的沿曲面奇异积分算子的L^p有界性。其中粗糙核K(y)=,y∈Ir^n以及曲面{(y,φ(|y|)):y∈r^n}满足某种光滑条件。同时,相应极大算子的有界性也被得到。

关键词：旋转曲面奇异积分有界性粗糙核极大算子

BOUNDEDNESS OF GENErALIZED CALDEr(?)N-ZYGMUND OpErATOrS

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Journal of Systems Science & Complexity 2002年第2期15卷 205-218页

作者： tang Canqin yang dachun department of mathematics Beijing Normal University 北京 100875

Abstract. The authors introduce the (θ1,θ2)-type Calderon-Zygmund operators andthe operators with the semi-(θ, N) regular kernels, and study their boundedness on theweighted Lebesgue spacest the weighted weak Lebes... 详细信息

关键词：偏微分方程广义Calderon-Zygmund算符正则核

BOUNDEDNESS OF VECTOr-VALUED OpErATOrS ON WEIGHTED HErZ SpACES

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Analysis in Theory and Applications 2000年第2期16卷 58-70页

作者： tang lin yang dachun department of mathematics Beijing Normal UniversityBeijing 100875PRC

In this paper, the authors establish the weighted weak and strong type norm inequalities in the set of weighted Herz-type spaces for a vector-valued analogue of the Hardy-Littlewood maximal operator; and using this, the authors obtain the weightd inequalies for a wide class of sublinear singular operators defined onr n which include the Calderón-Zygmund operators as special cases. The fractional versions of these results are also given.

关键词： oscillatory integral operator multiplier singularity

BOUNDEDNESS OF rOUGH SINGULAr INTEGrALS AND THEIr COMMUTATOrS ON INHOMOGENEOUS HErZ SpACES

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Analysis in Theory and Applications 1999年第2期15卷 36-54页

作者： tang lin (1) yang dachun (1) 1. department of mathematics Beijing Normal University 100875 Beijing PRC

The authors discuss the boundedness of rough singular integrals and their commutators with BMO(rr) functions on inhomogeneous Herz spaces.

关键词： Math BOUNDEDNESS OF rOUGH SINGULAr INTEGrALS AND THEIr COMMUTATOrS ON INHOMOGENEOUS HErZ SpACES

BOUNDEDNESS OF GENErALIZED FrACTIONAL INTEGrALS IN WEIGHTED HErZ-TYpE SpACES

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Analysis in Theory and Applications 2000年第2期16卷 80-100页

作者： tang Canqin yang dachun department of mathematics Beijing Normal UniversityBeijing 100875The People’s Republic of China

In this paper, the authors investigate the boundedness of the generalized fractional integrals of pérez on the weighted Herz spaces, the weighted weak Herz spaces and the weighted Herz-type Hardy spaces for general w... 详细信息

关键词： oscillatory integral operator multiplier singularity