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作为政治行为的代拟与六朝骈文书写

中国文学研究 2018年第4期 37-42页

作者：钟涛中国传媒大学人文学院北京100024

代拟是中国古代重要的写作现象,六朝骈文中存在大量代他人立言的作品。六朝骈文代拟书写是政治和文学的结合。代拟者在进行骈文代拟书写时,既要牢记其代言对象的身份地位,立场和观点,并进行有效的传达,同时,代拟者本身也有主体意识表达... 详细信息

代拟是中国古代重要的写作现象,六朝骈文中存在大量代他人立言的作品。六朝骈文代拟书写是政治和文学的结合。代拟者在进行骈文代拟书写时,既要牢记其代言对象的身份地位,立场和观点,并进行有效的传达,同时,代拟者本身也有主体意识表达的诉求。代拟者主体意识的投入增强了代拟骈文的文学色彩。六朝代拟骈文书写的兴盛,与官制的变化、政治的需要和尚文的风气有密切关系。

关键词：六朝骈文代拟书写

Pancreatic fistula may be an important complication following spleen-preserving radical gastrectomy with dissection of No.10 and No.11 lymph nodes

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Chinese Medical Journal 2010年第15期123卷 2135-2137页

作者： ZHANG Jun ZHANG zhong-tao WANG Yu WANG Kang-li Department of General Surgery Beijing Friendship Hospital Affiliated to Capital Medical University Beijing 100050 China

In recent years, spleen-preserving radical gastrectomy with dissection of No.10 and No.11 lymph nodes has been gradually accepted because of an improved understanding of immune function of the spleen in the perioperat... 详细信息

关键词： pancreatic fistula gastrectomy postoperative complications

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基于社会网络分析的投资组合优选方法

系统工程理论与实践 2015年第12期35卷 3017-3024页

作者：钟韬彭勤科西安交通大学系统工程研究所西安710049

网络中存在着与金融市场相关的海量信息,为实现自动化的技术分析与基本面分析提供了空间.因此,本文利用了以文本为主的上市公司基本面的财经信息,建立了金融市场的社会网络模型;然后利用其中的最大全连通补网进行基于多元化策略的投资... 详细信息

网络中存在着与金融市场相关的海量信息,为实现自动化的技术分析与基本面分析提供了空间.因此,本文利用了以文本为主的上市公司基本面的财经信息,建立了金融市场的社会网络模型;然后利用其中的最大全连通补网进行基于多元化策略的投资组合优选,并与技术分析方法相结合,给出了一种较低风险的投资策略.本文根据真实数据对基于该方法生成的投资策略进行了交易仿真实验,研究结果表明:本方法能够有效地降低投资组合的风险,并在一定程度上提高投资收益.

关键词：投资组合金融市场社会网络分析风险投资策略

CDX2 Inhibits Invasion and Migration of Gastric Cancer Cells by Phosphatase and Tensin Homologue Deleted from Chromosome 10/Akt Signaling Pathway

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Chinese Medical Journal 2015年第8期128卷 1065-1071页

作者： Yong-Qiang Liu Zhi-Gang Bai Xue-Mei Ma zhong-tao Zhang Department of General Surgery Beijing Friendship Hospital Capital Medical University Beijing 100050 China

Background： Gastric cancer （GC） is one of the most prevalent malignancies in the world today, with a high mortality rate. CDX2 is a Drosophila caudal-related homeobox transcription factor that plays an important role in GC. Phosphatase and tensin homologue deleted from chromosome 10 （PTEN） is an important tumor suppressor which is widely expressed in normal human tissues. The aim of the study was to determine the relationship and mechanism between CDX2 and PTEN in invasion and migration of GC ***： pcDNA3-CDX2 plasr^lids were transfected into MGC-803 cells to up-regulate CDX2 protein, and small interfering RNA-CDX2 was transfected to down-regulate CDX2. The influence of CDX2 or PTEN on cell migration and invasion was measured by invasion, migration and wound healing assays. Western blotting assay and immunofluorescence were used to detect the expression ofCDX2, PTEN, phosphorylation ofAkt, E-cadherin and N-cadherin. Statistical significance was determined by one-way analysis of ***： The results showed that CDX2 reduced the migration and invasion of GC cells （P 〈 0.05）, and inhibited the activity of Akt through down-regulating PTEN expression （P 〈 0.05）. CDX2 also restrained epithelial-mesenchymal transition of GC ***： CDX2 inhibited invasion andmigration of GC cells by PTEN/Akt signaling pathway, and that may be used for potential therapeutic target.

关键词： CDX2 Epithelial-mesenchymal Transition Gastric Cancer PTEN

A new exploration on the creation of grafted breast cancer model for MA891 cells in TA2 mice

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Chinese Medical Journal 2005年第21期118卷 1830-1833页

作者： GU Jun-chao YU Wei-bo ZHANG zhong-tao WANG Yu Department of General Surgery Beijing Friendship Hospital Affiliated with Capital University of Medical Sciences Beijing 100050 China

Animal experimental systems are particularly useful for the study of human breast cancer. An ideal model shoulcl be easy to use, closely mimicking human physiopathology and has a stable tumor morbidity. The cell line MA891 was established from a spontaneous TA2 mouse mammary carcinoma by Cancer Institute of Chinese Academy of Medical Sciences. 3 Some researches indicated that MA891 had a very low immunogenecity and maintained a high metastatic potential in vivo. So it has been used as a better grafted mouse tumor model for studying cancer physiopathology and metastasis in human for years. However, about the biological characteristic and the histopathologic feature of this model there has been a lack of investigations.

关键词： breast cancer MA891 cell animal model

Relapse of acute lymphoblastic leukemia in the pancreas after allogeneic bone marrow transplantation

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Chinese Medical Journal 2010年第22期123卷 3364-3366页

作者： ZHAO Xiao-mu ZHANG zhong-tao LI Jian-she HAN Wei Department of General Surgery Beijing Friendship Hospital Capital Medical University Beijing 100050 China

The occurrence of metastatic lesions in the pancreas of patients with cancer, including hematological cancers,is uncommon （1.6%-37.5%） and of these, the majority of patients will have widespread disease.1-7 Isolated potentially resectable pancreatic metastases are rarely seen. Resection of metastatic tumors of the pancreas has been reported, but its role in improving survival rates or quality of life is not clear.7,8 However,

关键词： pancreas acute leukemia relapse allogeneic bone marrow transplantation

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梁季江陵政治骈文的文学书写

湖南师范大学社会科学学报 2014年第4期43卷 127-131页

作者：钟涛中国传媒大学文学院

今存梁季江陵萧绎集团的骈文作品,基本上都是施用于庙堂之上的政治性公牍文,与当时的重大政治事件关系密切。这些骈文采用了具有文学性的书写方式,极富抒情色彩和形象化特征,讲究艺术技巧,艺术风格多样。梁季江陵骈文力图通过具有审美... 详细信息

今存梁季江陵萧绎集团的骈文作品,基本上都是施用于庙堂之上的政治性公牍文,与当时的重大政治事件关系密切。这些骈文采用了具有文学性的书写方式,极富抒情色彩和形象化特征,讲究艺术技巧,艺术风格多样。梁季江陵骈文力图通过具有审美意蕴的文学性书写来达到政治实用目的,体现了骈文应用功能和审美功能的融通。

关键词：梁季江陵政治骈文文学书写

Flat-band based high-temperature ferromagnetic semiconducting state in the graphitic C₄N₃ monolayer

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Fundamental Research 2025年第1期5卷 138-144页

作者： He, Chaoyu Liao, Yujie Ouyang, tao Zhang, Huimin Xiang, Hongjun zhong, Jianxin Laboratory for Quantum Engineering and Micro-Nano Energy Technology and School of Physics and Optoelectronics Xiangtan University Xiangtan 411105 China Key Laboratory of Computational Physical Sciences (Ministry of Education) Institute of Computational Physical Sciences Department of Physics Fudan University Shanghai 200433 China

Half-filled isolated flat-band paves a new way to realize high-temperature ferromagnetic semiconductor for spintronics applications, but it is extremely rare in lattice models and lacking in realistic materials. Herein, the 2 × 2 super-cell of the honeycomb lattice with a single-hole defect is proposed as a new lattice model (HL-D-1/8) to realize nontrivial isolated flat-bands. We further demonstrate that C4N3 monolayer of the experimentally realized graphitic carbon nitride (Adv. Mater., 22, 1004, 2010;Nat. Commun., 9, 3366, 2018) is a perfect system holding such a lattice to host flat-bands. A new corrugated Pca21 configuration is proposed as the ground state for the free-standing C4N3 monolayer, which is dynamically stable and energetically more favorable than the widely-used flat one without dynamical stability. The Pca21 configuration is found to be an intrinsic ferromagnetic half-semiconductor (Tc ≈ 241 K) with one semiconducting spin-channel (1.75 eV) and one insulating spin-channel (3.64 eV), which is quite rare in two-dimensional systems. Its ferromagnetic semiconducting property originates from the isolated pz-state flat-band as the corrugation shifts the flat-band upward to the Fermi level. Interestingly, such a corrugated Pca21 C4N3 monolayer is found to be both piezoelectric and ferroelectric, which makes it an unusual metal-free two-dimensional multiferroic. © 2023

关键词： Ferromagnetic semiconductor First-principles calculation Graphitic C4N3 Isolated flat-band Tight-binding model Two-dimensional multiferroic

Effects of hepatotrophic factors on the liver after portacaval shunt in rats with portal hypertension

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Chinese Medical Journal 2006年第20期119卷 1727-1733页

作者： ZHANG zhong-tao JIANG Peng WANG Yu LI Jian-she XUE Jian-guo ZHOU Yan-zhong YUAN Zhu Department of General Surgery Beijing Friendship HospitalCapital Medical University Beijing 100050 China

Background Portacaval shunt （PCS） prevent hepatotrophic factors from flowing into the liver, but they enter directly the systemic circulation and worsen liver injury. This study was designed to investigate the effects of hepatotrophic factors through the portal vein on the liver in rats with portal hypertension after portacaval shunt. Methods Intrahepatic portal hypertension （IHPH） was induced by intragastric administration of carbon tetrachloride, and end-to-side PCS was performed. Eight normal rats served as controls, and eight rats with IHPH served as IHPH model （IHPH group）. Another 32 rats with IHPH-PCS were randomly subdivided into 4 groups： normal saline （NS） given to 8 rats, hepatocyte growth factor （HGF） 8, insulin （INS） 8, hepatocyte growth factor and insulin （HGF＋INS） 8. Hepatotrophic factors were infused into the portal vein through an intravenous catheter. Portal venous pressure （PVP） was measured. The levels of serum alanine aminotransferase （ALT） and aspartate aminotransferase （AST） were tested biochemically and those of hyaluronic acid （HA） and laminin （LN） were measured by radioimmunoassay. Hepatic fibrosis was assessed histologically and the expression of collagens type I and In were detected immunohistochemically. Ultrastructural change of hepatocytes and the number of mitochondria were observed under an electron microscope. The data were compared between groups and subgroups by Student-Newman-Keuls procedure with SPSS 10.0.Results PVP was significantly higher in the IHPH rats than in the control rats （P〈0.05）. The levels of serum ALT, AST, HA, and LN, hepatic fibrosis score, the amount of collagen deposition, collagens type I and III increased more significantly in the IHPH group than in the control rats （P〈0.05）. The number of mitochondria decreased more significantly in the IHPH rats than in the control rats （P〈0.05）. The levels of serum ALT, AST, HA and LN as well as hepatic fibrosis score, the amount of collagen deposition, and the amount

关键词： hepatocyte growth factor hypertension, portal portacaval shunt, surgical