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Characterizations of VMO and CMO Spaces in the Bessel Setting

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Acta Mathematica Sinica,English Series 2024年第12期40卷 3055-3078页

作者： qing dong guo Jorge J.BETANCOR dong Yong YANG School of Mathematical Sciences Xiamen UniversityXiamen361005P.R.China Departamento de Anáisis Matemáico Universidad de La LagunaCampus de AnchietaAvda.Astrofísico Francisco Sánchezs/n38271La Laguna(Sta.Cruz de Tenerife)Spain

Letλ>0 and △λ:=-dx^(2)/d^(2)-x/2λdx/d be the Bessel operator on ℝ+:=(0,∞).In this paper,the authors introduce and characterize the space VMO(ℝ+,dmλ)in terms of the Hankel translation,the Hankel convolution and a John-Nirenberg inequality,and obtain a sufficient condition of Fefferman-Stein type for functions f∈VMO(ℝ+,dmλ)using R△λ,the adjoint of the Riesz transform R△λ.Furthermore,we obtain the characterization of CMO(ℝ+,dmλ)in terms of the John-Nirenberg inequality which is new even for the classical CMO(ℝ^(n))and a sufficient condition of Fefferman-Stein type for functions f∈CMO(ℝ+,dmλ).

关键词： Bessel operator VMO(ℝ+,dmλ) CMO(ℝ+,dmλ) Riesz transform

Clinical and experimental study on regional administration of phosphorus32 glassmicrospheres in treating hepatic carcinoma

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World Journal of Gastroenterology 1999年第6期5卷 492-505页

作者： LIU Lu, JIANG Zao, TENG Gao Jun, SONG Ji Zhi, ZHANG dong Sheng, guo qing Ming, FANG Wen, HE Shi Cheng and guo Jin He 南京铁道医科大学江苏苏州

AIM To study the therapeutical effectiveness, dosage range and toxic adverse effects of domestic phosphorus 32 glass microsphere and evaluate its clinical significance. METHODS Ⅰ. Fifty two BALB/*!c tumor bearing male nude mice were allocated into treatment group( n =38) and control group( n =14). In the former group different doses of 32 P GMS were injected into the tumor mass, while in the latter 31 P GMS or no treatment was given. The experimental animals were sacrificed in batches, and then the tumors and their nearby tissues were examined by light and electron microscopy. Ⅱ. Through selective catheterization of hepatic artery, 32 P GMS was infused to 5 healthy domestic pigs in a dosage equivalent to the therapeutic dose for human being, and 31 P GMS was infused to another 5 healthy domestic pigs. Two pigs infused with contrast medium served as whole course blank controls. One pig from each group was surrendered to euthanasia at week 1, 4, 8 and 16 respectively. The ultrastructural histopath ological changes in liver tissues taken from different sites were evaluated semiquan titatively. Ⅲ. One hundred and twenty seven times of 32 P GMS intrahepatic artery interventional therapies were performed on 93 patients with hepatic carcinoma, including 79 cases of primary hepatic carcinoma and 14 cases of secondary hepatic carcinoma. 32 P GMS ( n =30), and group B, 32 P GMS and half dose of trans hepatic artery embolization (TAE) ( n =49) , and 18 patients with HCC by TAE only as control group C. Fourteen patients with secondary hepatic carcinoma were treated in the same way as group B or C. RESULTS Ⅰ. Comparing with the control group, the treatment group of tumor bearing nude mice attained the tumor inhibition rates of 59 7%-93 7% ( F =579 62, P <0 01) at 14*!d . At an absorbed dose of 7320Gy, the tumor cells were completely destroyed. When the absorbed doses ranged from 1830Gy to 3660Gy, most of the tumor cells showed the evidences of injury or necrosis, but there appea

关键词： liver neoplasms/therapy phosphorus 32 glass microspheres ( 32 P GMS) 31 P GMS interventional therapy

Glycine Attenuates Myocardial Fibrosis in Myocardial Infarction in Rats Partly through Modulating Signal Transducer and Activator of Transcription 3/Nuclear Factor-κB/Transforming Growth Factor-β axis

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World Journal of Traditional Chinese Medicine 2024年第2期10卷 263-270页

作者： Ning Li Yong Wang Chun Li Xu Chen Xue-Feng Zhang Nan Nan Tan Yi-Qin Hong Ming-Yan Shao Bing-Hua Tang dong-qing guo School of Life Science Beijing University of Chinese MedicineBeijingChina College of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijingChina Modern Research Center of Traditional Chinese Medicine School of Traditional Chinese Material MedicaBeijing University of Chinese MedicineBeijingChina

Objective: Inflammation and fibrosis are strongly associated with each other. Glycine is present in various traditional Chinese medicines and exhibits anti-inflammatory activity. However, the effects of glycine on myocardial fibrosis(MF) in rats with myocardial infarction(MI) have not been reported. The purpose of this study is to investigate the effects of glycine therapy on MF and comprehend its underlying mechanisms. Materials and Methods: Left anterior descending artery ligation-induced MI in Sprague Dawley rats was leveraged to assess the therapeutic effects of Glycine. Rats received either normal saline or glycine(0.5 mg/g bodyweight) for 7 days. Results: Glycine upregulated cardiac ejection fraction and fractional shortening to improve cardiac function, as evaluated by echocardiography. Histological and immunohistochemical analyses demonstrated that glycine could decrease inflammatory cell infiltration and alleviate collagen deposition. Western blotting revealed that nuclear factor-κB(NF-κB)-mediated inflammatory signaling was also downregulated by glycine treatment. The expression of signal transducer and activator of transcription 3(STAT3), tumor necrosis factor-α, and transforming growth factor-β(TGF-β) was decreased significantly in the glycine-treated group compared to the model group. Thus, glycine plays a protective role against myocardial ischemia and subsequent MF. Conclusion: The protective effects of glycine were achieved partly through STAT3/NF-κB/TGF-β signaling pathway.

关键词： Glycine myocardial fibrosis signal transducer and activator of transcription 3/nuclear factor-κB/transforming growth factor-β

Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-qing Qiao guo Hui Bojing Sun dongfang Hou Meidi Wang Xueqian Wu Tao Wu dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Cadmium sulfide

一些算子的交换子在广义Morrey空间上的紧性

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数学学报（中文版） 2020年第4期63卷 367-380页

作者：郭庆栋周疆新疆大学数学与系统科学学院乌鲁木齐830046

本文主要研究分数次积分算子、Marcinkiewicz积分、带光滑核的pseudo-differential算子的交换子在广义Morrey空间Mp,ω(R^n)上的紧性.注意它们的处理方法分别不同.

关键词：紧性交换子广义Morrey空间

Experimental research of a thermoacoustic prime mover and a refrigerator

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Chinese Journal of Acoustics 2001年第4期20卷 371-377页

作者： dong Kaijun, LI qing, guo Fangzhong (Cryogenic Laboratory, Huazhong University of Science and Technology Wuhan) Cryogenic Laboratory Huazhong University of Science and Technology Wuhan

Thermoacoustic engine has been concerned recently because of its advantages of no moving parts and no pollution. A prime mover is built and its characteristics of onset temperature difference, frequency and output acoustic power are measured and analyzed. A thermoacoustic refrigerator driven by this prime mover had been tested. It may develop a temperature difference of 25 K across the regenerator and a lowest temperature of -8℃ was achieved with the frequency, input power and the static pressure 81.7 Hz, 800 W and 1 Mpa respectively.

关键词： mode

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黑索今爆轰临界厚度的神经网络预测研究

兵工学报 2010年第10期31卷 1394-1397页

作者：刘玉存于国强董国庆中北大学化工与环境学院山西太原030051 中国兵器工业第213研究所陕西西安710061 晋西工业集团公司山西太原030027

采用楔形装药,测量了粒径范围在1~2μm（平均粒径为1.5μm）的超细黑索今（RDX）在不同密度、粒度与不同粘结剂含量下的爆轰临界厚度。以密度、粒度与粘结剂含量作为输入元,RDX爆轰临界厚度作为输出元建立了RDX爆轰临界厚度的E lman神... 详细信息

采用楔形装药,测量了粒径范围在1~2μm（平均粒径为1.5μm）的超细黑索今（RDX）在不同密度、粒度与不同粘结剂含量下的爆轰临界厚度。以密度、粒度与粘结剂含量作为输入元,RDX爆轰临界厚度作为输出元建立了RDX爆轰临界厚度的E lman神经网络预测模型。以实验数据对模型进行训练,采用达到误差要求的模型对不同密度、粒度与粘结剂含量下的RDX爆轰临界厚度进行预测。预测结果显示：3个影响因素对临界直径的影响规律与文献[9-11]报道相同,说明神经网络用于RDX爆轰临界厚度预测是可行的。

关键词：爆炸力学黑索今临界厚度 Elman神经网络

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浙江三个新石器时代遗址出土玉玦科技分析

光谱学与光谱分析 2017年第9期37卷 2905-2913页

作者：董俊卿孙国平王宁远楼航李青会顾冬红中国科学院上海光学精密机械研究所科技考古中心上海201800 浙江省文物考古研究所浙江杭州310014

玉玦是我国新石器时代广泛出现的一类重要玉器。环太湖流域新石器时代遗址中出土的大量玉玦,具有鲜明时代和地域特征,为探索中国玉文化起源和传播提供了重要实物。为获取环太湖流域新石器时代玉玦的基础材料学信息(如主要矿物组成、硬度... 详细信息

玉玦是我国新石器时代广泛出现的一类重要玉器。环太湖流域新石器时代遗址中出土的大量玉玦,具有鲜明时代和地域特征,为探索中国玉文化起源和传播提供了重要实物。为获取环太湖流域新石器时代玉玦的基础材料学信息(如主要矿物组成、硬度等),以及探索玉料随时间演变规律和可能的原料来源,本文以浙江省境内3个代表性新石器时代遗址——田螺山、仙坛庙和江家山遗址出土的玉玦为研究对象,采用X射线衍射(XRD)和质子激发X射线荧光(PIXE)分析技术对其进行了无损分析检测。研究结果表明:从河姆渡文化至崧泽文化晚期,所分析玉玦的主要组成矿物为萤石、迪开石、石英、白云母、透闪石和蛇纹石等,以萤石、玉髓和迪开石为主,且时代早于透闪石和蛇纹石。结合已有的研究成果,探讨了相关遗址出土玉玦的原料随时间变化特征、原料来源,以及玉玦的材料学特征与加工工艺之间的内在联系。

关键词：新石器时代玉玦无损分析玉材可能来源

实时直接分析高分辨质谱技术研究碳硼烷类化合物

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分析测试学报 2021年第2期40卷 276-281页

作者：王昊阳东国卿中国科学院上海有机化学研究所上海200032

该文运用高分辨质谱技术对实时直接分析(Direct analysis in real time,DART)离子化条件下碳硼烷化合物的质谱行为进行了研究,对碳硼烷化合物DART高分辨质谱中所得到的同位素峰簇进行了表征与归属。研究结果表明,选取的碳硼烷化合物在D... 详细信息

该文运用高分辨质谱技术对实时直接分析(Direct analysis in real time,DART)离子化条件下碳硼烷化合物的质谱行为进行了研究,对碳硼烷化合物DART高分辨质谱中所得到的同位素峰簇进行了表征与归属。研究结果表明,选取的碳硼烷化合物在DART负离子条件下均能得到较好的质谱信号,这可能与硼笼结构的“缺电性”有关。含10个B原子的碳硼烷化合物形成的离子同位素峰簇信号中,通常情况下相对丰度最高的同位素峰中含2个10B以及8个11B。将碳硼烷化合物高分辨质谱分析的精确m/z数据信息与图谱中同位素峰轮廓分析相结合,是碳硼烷化合物有效的质谱定性分析与表征策略。

关键词：实时直接分析高分辨质谱碳硼烷化合物