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Equivalent Characterization of Centralizers on B(H)

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Acta Mathematica Sinica,English Series 2016年第9期32卷 1113-1120页

作者： Wen Si XU run ling an Jin Chuan HOU Department of Mathematics Taiyuan University of Technology Taiyuan 030024 P. R. China

Let H be a Hilbert space with dimH ≥2 and Z ∈ B（H） be an arbitrary but fixed operator. In this paper we show that an additive map （I）： B（H）→ B（H） satisfies Ф（AB） = Ф（A）B = AФ（B） for any A, B ∈ B（H） with AB = Z if and only if Ф（AB） = Ф（A）B = AФ（B）, A, B ∈ B（H）, that is, （I） is a centralizer. Similar results are obtained for Hilbert space nest algebras. In addition, we show that Ф（A2） = AФ（A） = Ф（A）A for any A ∈ B（H） with A2 = 0 if and only if Ф（A） = AФ（I） = Ф（I）A, A ∈ B（H）, and generalize main results in Linear Algebra and its Application, 450, 243-249 （2014） to infinite dimensional case. New equivalent characterization of centralizers on B（H） is obtained.

关键词： Centralizers full-centralized points von Neumann algebras nest algebras

Apolipoprotein E2 inhibits mitochondrial apoptosis in pancreatic cancer cells through ERK1/2/CREB/BCL-2 signaling

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Hepatobiliary & Pancreatic Diseases International 2023年第2期22卷 179-189页

作者： Hui Wang Hui-Chao Zhou run-ling Ren Shao-Xia Du Zhong-Kui Guo Xiao-Hong Shen Tianjin Institute of Medical&Pharmaceutical Sciences Tianjin 300020China School of Medicine Nankai UniversityTianjin 300071China

Background: Apolipoprotein E2(ApoE2) is a pleiotropic protein that influences several aspects of cancer metabolism and development. Evading apoptosis is a vital factor for facilitating cancer cell growth. However, the role and mechanism of ApoE2 in regulating cell apoptosis of pancreatic cancer remain unclear. Methods: In this study, we firstly detected the m RNA and protein expressions of ApoE2 in PANC-1 and Capan-2 cells by real-time polymerase chain reaction and Western blotting. We then performed TUNEL and flow cytometric analyses to explore the role of recombinant human ApoE2, p CMV6-ApoE2 and si ApoE2 in the apoptosis of PANC-1 and Capan-2 cells. Furthermore, we investigated the molecular mechanism through which ApoE2 affected apoptosis in PANC-1 cells using immunofluorescence, immunoprecipitation, Western blotting and co-immunoprecipitation analysis. Results: ApoE2 phosphorylated ERK1/2 and inhibited pancreatic cancer cell apoptosis. In addition, our data showed that ApoE2/ERK1/2 altered the expression and mitochondrial localization of BCL-2 via activating CREB. ApoE2/ERK1/2/CREB also increased the total BCL-2/BAX ratio, inhibited the opening of the mitochondrial permeability transition pore and the depolarization of mitochondrial transmembrane potential, blocked the leakage of cytochrome-c and the formation of the apoptosome, and consequently, suppressed mitochondrial apoptosis. Conclusions: ApoE2 regulates the mitochondrial localization and expression of BCL-2 through the activation of the ERK1/2/CREB signaling cascade to evade the mitochondrial apoptosis of pancreatic cancer cells. ApoE2 may be a distinct prognostic marker and a potential therapeutic target for pancreatic cancer.

关键词： Apolipoprotein E2 ERK1/2 Mitochondrial apoptosis Pancreatic cancer

Jordan Semi-Triple Multiplicative Maps on the Hermitian Matrices

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Journal of Mathematical Research and Exposition 2011年第6期31卷 1117-1122页

作者： Si Qing YAN run ling an Jin Chuan HOU Department of Mathematics Taiyuan University of Technology Shanxi 030024 P. R. China

In this paper,we show that every injective Jordan semi-triple multiplicative map on the Hermitian matrices must be surjective,and hence is a Jordan ring isomorphism.

关键词： Hermitian matrices Jordan semi-triple multiplicative map Jordan ring isomorphism.

Monitoring Sea Fog over the Yellow Sea and Bohai Bay Based on Deep Convolutional Neural Network

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Journal of Tropical Meteorology 2024年第3期30卷 223-229页

作者： HUANG Bin GAO Shi-bo YU run-ling ZHAO Wei ZHOU Guan-bo National Meteorological Center Beijing 100081 China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081 China Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province Haikou 570203 China Agronomy College Shenyang Agricultural UniversityShenyang 110866 China Shanghai Typhoon Institute China Meteorological AdministrationShanghai 200030 China Key Laboratory of Numerical Modeling for Tropical Cyclones China Meteorological AdministrationShanghai 200030 China

In this paper,we utilized the deep convolutional neural network D-LinkNet,a model for semantic segmentation,to analyze the Himawari-8 satellite data captured from 16 channels at a spatial resolution of 0.5 km,with a focus on the area over the Yellow Sea and the Bohai Sea(32°-42°N,117°-127°E).The objective was to develop an algorithm for fusing and segmenting multi-channel images from geostationary meteorological satellites,specifically for monitoring sea fog in this ***,the extreme gradient boosting algorithm was adopted to evaluate the data from the 16 channels of the Himawari-8 satellite for sea fog detection,and we found that the top three channels in order of importance were channels 3,4,and 14,which were fused into false color daytime images,while channels 7,13,and 15 were fused into false color nighttime ***,the simple linear iterative super-pixel clustering algorithm was used for the pixel-level segmentation of false color images,and based on super-pixel blocks,manual sea-fog annotation was performed to obtain fine-grained annotation *** deep convolutional neural network D-LinkNet was built on the ResNet backbone and the dilated convolutional layers with direct connections were added in the central part to form a string-and-combine structure with five branches having different depths and receptive *** show that the accuracy rate of fog area(proportion of detected real fog to detected fog)was 66.5%,the recognition rate of fog zone(proportion of detected real fog to real fog or cloud cover)was 51.9%,and the detection accuracy rate(proportion of samples detected correctly to total samples)was 93.2%.

关键词： deep convolutional neural network satellite images sea fog detection multi-channel image fusion

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胜利油田稠油组分的光谱法研究

光谱学与光谱分析 2007年第11期27卷 2270-2274页

作者：关润伶朱红北京交通大学理学院化学所北京100044

用红外光谱,紫外光谱及同步荧光光谱对胜利油田稠油中的沥青质和胶质进行了分析。红外光谱分析结果表明,胶质、沥青质分子含有可形成氢键的羟基、胺基、羧基、羰基等极性基团,说明原油中胶质分子之间、沥青分子之间及二者相互之间有强... 详细信息

用红外光谱,紫外光谱及同步荧光光谱对胜利油田稠油中的沥青质和胶质进行了分析。红外光谱分析结果表明,胶质、沥青质分子含有可形成氢键的羟基、胺基、羧基、羰基等极性基团,说明原油中胶质分子之间、沥青分子之间及二者相互之间有强烈的氢键作用,具有很强的极性。通过紫外吸收光谱及同步荧光光谱的测定,并与模型化合物的紫外吸收特征峰及荧光光谱的特征峰相比较,结果表明,芳香单片是研究稠油中胶质、沥青质组分结构的最基本单位。单元芳香片中芳香环的个数以3～4个环为主,共轭芳香环的排列形式主要为"线性排列",即渺位缩合。但胶质和沥青质的结构也存在着差异,即胶质中主要含有3～4个环的共轭芳香片,而沥青质中含有少量多于5个环的共轭芳香片,并且这些共轭芳香片有部分"面性排列",即迫位缩合。

关键词：稠油沥青质胶质红外光谱紫外光谱

乳化降粘剂的红外光谱和核磁共振谱的分析研究

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光谱学与光谱分析 2006年第8期26卷 1428-1431页

作者：关润伶朱红北京交通大学理学院化学所北京100044

采取一系列分离方法对一种高效乳化降粘剂进行分离与纯化。用红外光谱对各组分的官能团结构进行了鉴定,用核磁共振氢谱及电喷雾离子质谱对相应组分进行了分析。推断其组分有表面活性剂烷基酚聚氧乙烯醚和N-月桂酰肌氨酸钠,在降粘剂固体... 详细信息

采取一系列分离方法对一种高效乳化降粘剂进行分离与纯化。用红外光谱对各组分的官能团结构进行了鉴定,用核磁共振氢谱及电喷雾离子质谱对相应组分进行了分析。推断其组分有表面活性剂烷基酚聚氧乙烯醚和N-月桂酰肌氨酸钠,在降粘剂固体含量部分中分别占26.6%和19.3%。高分子组分为聚丙烯酸丁酯,含量为9.0%。通过气相色谱-质谱分析技术对小分子助剂进行了分析,有2-乙基己醇,十二醇,十四醇。通过定性定量分析,该样品有高达27.2%的氢氧化钠及很少量的氯化钠,其余为水。

关键词：乳化降粘剂傅里叶变换红外光谱核磁共振氢谱电喷雾离子质谱

In vivo SPECT imaging of an 131I-labeled PM 2.5 mimic substitute

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Nuclear Science and Techniques 2020年第11期31卷 60-67页

作者： Dong-Hui Pan Jie Sheng Xin-Yu Wang Qian-Huan Huang Jun-Jie Yan Li-Zhen Wang run-ling Yang Dong-Jian Shi Yu-Ping Xu Ming-Qing Chen Key Laboratory of Synthetic and Biological Colloids School of Chemical and Material EngineeringMinistry of EducationJiangnan UniversityWuxi 214122China Key Laboratory of Nuclear Medicine Jiangsu Key Laboratory of Molecular Nuclear MedicineMinistry of HealthJiangsu Institute of Nuclear MedicineWuxi 214063China

The health effects of ambient PM 2.5 and its potential mechanisms have generated considerable *** vitro cell studies and ex vivo animal experiments may not accurately determine the characteristics of PM 2.5 *** better understand their detailed mechanisms,we performed an in vivo study using single photon emission tomography(SPECT)*** mimic the PM 2.5 particles,SiO2 nanoparticles modified by ethylene carbonate or polyvinyl pyrrolidone were labeled with *** administration via inhalation,in vivo SPECT imaging of the radiolabeled particles in sprague dawley rats was *** was found that radioactivity accumulated in the lungs and trachea 6 and 24 h after *** addition,significant radioactivity was observed in the abdomen,including the liver and *** results were also confirmed by ex vivo *** study revealed that in vivo SPECT imaging could be an effective method for investigating the properties of PM 2.5 particles.

关键词： PM 2.5 mimic substitute EC/SiO2 nanoparticles SPECT images 131I labeling

EcoFRESHTM粘胶针织物的复合茶皂素前处理

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印染 2019年第12期45卷 20-23页

作者：尚润玲江阴职业技术学院环境与材料工程系

采用复合茶皂素对EcoFRESH^TM粘胶针织物前处理。优化的茶皂素前处理工艺为:茶皂素5g/L,时间50min,温度85℃。与传统前处理相比,茶皂素前处理工艺可获得白度稳定、毛效好、强力损伤小的产品,且工艺简捷,污染少。

关键词：前处理茶皂素粘胶织物

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EcoFRESHTM棉织物的绿色染整加工

印染 2019年第15期45卷 18-21页

作者：尚润玲江阴职业技术学院环境与材料工程系

介绍了 EcoFRESH^TM棉织物的绿色染整加工工艺,包括茶皂素前处理、无盐无碱染色、水洗及后处理加工。若成品布要求颜色鲜艳,前处理时可进行轻度漂白,如果染中深色可以不漂白。EcoFRESH^TM棉织物采用亲和力低的活性染料无盐无碱染色,选... 详细信息

介绍了 EcoFRESH^TM棉织物的绿色染整加工工艺,包括茶皂素前处理、无盐无碱染色、水洗及后处理加工。若成品布要求颜色鲜艳,前处理时可进行轻度漂白,如果染中深色可以不漂白。EcoFRESH^TM棉织物采用亲和力低的活性染料无盐无碱染色,选择上染速率相近的活性染料拼色,根据EcoFRESH?纱的规格严格控制染料用量。成品的各项色牢度均可达3~4级以上,起毛起球也达到4级,布面PH值符合产品要求。

关键词：染整活性染料阳离子改性棉织物