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学术与政治纠结中的朱熹祧庙之议 被引量:4
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作者 殷慧 肖永明 《湖南大学学报(社会科学版)》 CSSCI 北大核心 2009年第4期21-27,共7页
朱熹议祧庙主要针对的就是以楼鑰、陈傅良为代表的永嘉功利之学。朱熹认为赵汝愚不应该因避王安石之学而一概否定其具体的礼学主张,认为其祧迁僖祖满足了个人的私欲而忽视了能够带来长久和平安定的正确的礼制秩序。朱熹议祧庙集中体现... 朱熹议祧庙主要针对的就是以楼鑰、陈傅良为代表的永嘉功利之学。朱熹认为赵汝愚不应该因避王安石之学而一概否定其具体的礼学主张,认为其祧迁僖祖满足了个人的私欲而忽视了能够带来长久和平安定的正确的礼制秩序。朱熹议祧庙集中体现了礼学理学化的思想倾向,与后来编撰《仪礼经传通解》有着直接的联系。 展开更多
关键词 祧庙 永嘉 学理学化 朱熹
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Primary Research on WSeveral Theorems,Laws and Corollaries of Hydrology 被引量:2
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作者 龚云 《Agricultural Science & Technology》 CAS 2009年第4期1-3,54,共4页
The conceptions of theorems, laws and corollaries of hydrology were put forward. Combining with hydrology practice, several theo- rems, laws as well as corollaries of hydrology were summarized. The study provided some... The conceptions of theorems, laws and corollaries of hydrology were put forward. Combining with hydrology practice, several theo- rems, laws as well as corollaries of hydrology were summarized. The study provided some references for accelerating the development of hydrology theory in these aspects and promoting the improvement of its production technology. 展开更多
关键词 HYDROLOGY THEOREM LAW Corollary
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Prognostic Impact of Histopathologic Response after Neoadjuvant Chemotherapy in Stage Ⅲ_A Non-small Cell Lung Cancer
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作者 李坚 吴建农 +4 位作者 仇灏 俞力超 张德厚 施圣兵 丁明 《The Chinese-German Journal of Clinical Oncology》 CAS 2006年第2期116-120,共5页
Objective: To investigate prognostic impact of histopathologic response induced by neoadjuvant chemotherapy in patients with stage ⅢA non-small cell lung cancer (NSCLC). Methods: Forty patients with stage ⅢA NSC... Objective: To investigate prognostic impact of histopathologic response induced by neoadjuvant chemotherapy in patients with stage ⅢA non-small cell lung cancer (NSCLC). Methods: Forty patients with stage ⅢA NSCLC underwent two cycles of neoadjuvant chemotherapy with mitomycin, vindosine, and cisplatin followed by surgery. Histopathologic response in resection of the tumor was examined after surgery. Tumor regression was classified as grade Ⅳ, grade Ⅲ, grade Ⅱ, and grade Ⅰ according to the extent of tumor necrosis and the extent of the vital tumor tissues. The tumor regression grading was correlated with the survival time of the patients. Results: After two cycles of chemotherapy, 19 (47.5%) of 40 patients had objective response (2 complete and 17 partial response). In 40 resected tumor specimens, 2 (5%) were classified as regression grade Ⅳ, 16 (40%) as regression grade Ⅲ, 18 (45%) as regression gradeⅡ, and 4 (10%) as regression grade Ⅰ. The rate of complete surgical resection was significantly higher in patients with tumor regression grade Ⅲ-Ⅳ (〈10% vital tumor tissue)(P〈0.05). The median survival time in patients classified as having tumor regression grade Ⅲ-Ⅳ was significantly longer than that in patients who had regression grade Ⅰ-Ⅱ (P〈0.05). The 3-year survival rate in patients with regression grade Ⅲ-Ⅳ was markedly higher than that in patients who had regression grade Ⅰ-Ⅱ (P〈0.05). Conclusion: The extent of tumor regression induced by neoadjuvant chemotherapy is a critical issue for successful therapeutic approach in patients with stage ⅢA NSCLC. In resected specimens of tumors after chemotherapy, the presence of marked tumor regression (regression grade Ⅲ-Ⅳ) is predictive for superior survival time. 展开更多
关键词 non-small cell lung cancer neoadjuvant chemotherapy histopathologic response SURVIVAL
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Chemical Constituents from Starfish Asterias rollestoni 被引量:15
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作者 李国强 邓志威 +2 位作者 李军 付宏征 林文翰 《Journal of Chinese Pharmaceutical Sciences》 CAS 2004年第2期81-86,共6页
Aim To investigate novel bioactive and structural metabolites from marineorganisms. Methods Column chromatography in association with semi-preparative HPLC were used for theisolation of compounds. 1D and 2D NMR, IR, U... Aim To investigate novel bioactive and structural metabolites from marineorganisms. Methods Column chromatography in association with semi-preparative HPLC were used for theisolation of compounds. 1D and 2D NMR, IR, UV, and MS were employed for structure elucidation.Results From the butanol fraction of the 95% EtOH extract of the starfish Asterias rollestoni, a newcompound N^7 -2'-deoxypseudoxanthosine (1), along with sixteen known compounds, 2'-0-methyl-inosine(2), 2'-deoxyinosine (3), 2'-0-methylguanosine (4), inosine (5); thymine (6), uracil (7), thymidine(8), deoxyuridine (9), 2'-0-methyluridine (10), ( ― )-(1S, 3S)-1-methyl-1, 2, 3,4-terrahydro-β-carboline-3-carboxyl-ic acid (11), ( ― )-(1R, 3S)-1-methyl-1, 2, 3,4-tetrahydro-β-carboline-3-carboxylic acid (12) , ( ― )-(3S)- 1, 2, 3,4-tetrahydro-β-carboline-3-carboxylic acid (13), L-tryptophan (14), L-phenylalanine (15), 3-carboxyindole (16), and p-hydroxybenzoic acid (17) , have been isolated. Conclusion Compound 1 is a newnatural product, and compounds 8, 9 and 10 are isolated from natural sources for the first time, andthe known compounds except 14 and 15 are first reported from starfish Asterias rollestoni. 展开更多
关键词 STARFISH asterias rollestoni N^7 -2'-deoxypseudoxanthosine
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Effects of stoichiometric ratio La/Mg on structures and electrochemical performances of as-cast and annealed La-Mg-Ni-based A_2B_7-type electrode alloys 被引量:3
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作者 张羊换 杨泰 +3 位作者 翟亭亭 袁泽明 张国芳 郭世海 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第6期1968-1977,共10页
In order to investigate the influences of the stoichiometric ratio of La/Mg (increasing La and decreasing Mg on the same mole ratio) on the structure and electrochemical performances of the La-Mg-Ni-based A2B7-type ... In order to investigate the influences of the stoichiometric ratio of La/Mg (increasing La and decreasing Mg on the same mole ratio) on the structure and electrochemical performances of the La-Mg-Ni-based A2B7-type electrode alloy, the as-cast and the annealed ternary Lao.8+xMgo.2_xNi3.5 (x=0-0.05) electrode alloys were prepared. The characterization of electrode alloys by X-ray diffraction (XRD) and scanning electron microscopy (SEM) shows that all the as-cast and the annealed alloys hold two major phases of (La,Mg)2Ni7 and LaNi5 as well as a residual phase of LaNi3. Moreover, the increase of La/Mg ratio brings on a decline of (La,Mg)2Ni7 phase and a rise of LaNi5 and LaNi3 phases. The variation of La/Mg ratio gives rise to an evident change of the electrochemical performances of the alloys. The discharge capacities of the as-cast and the annealed alloys evidently decrease with growing the La/Mg ratio, while the cycle stabilities of the alloys visibly augment under the same condition. Furthermore, the high rate discharge ability (HRD), the electrochemical impedance spectrum (EIS), the Tafel polarization curves, and the potential step measurements all indicate that the electrochemical kinetic properties of the alloy electrodes increase with the La/Mg ratio rising. 展开更多
关键词 hydrogen storage alloy annealing treatment structure electrochemical performance KINETICS
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Clinico-pathologic significance of neuroendocrine cells in gastric carcer tissue
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作者 王鲁平 虞积耀 +1 位作者 史景泉 梁延杰 《World Journal of Gastroenterology》 SCIE CAS CSCD 1996年第1期30-33,共4页
AIMS To elucidate the biological and clinicopathological signifi- cance of neuroendocrine(NE)cells in gastric carcinoma(GC). METHODS One hundred and eighty-nine cases of various histo- logical types of GC were observe... AIMS To elucidate the biological and clinicopathological signifi- cance of neuroendocrine(NE)cells in gastric carcinoma(GC). METHODS One hundred and eighty-nine cases of various histo- logical types of GC were observed using light microscopy, histochemistry,immunohistochemistry and electron microscopy. Of them 127 patients were followed up. RESULTS Chromogranin A(CgA)positive GC was demonstrat- ed in 85 cases(45.0%).The typos of NE cells in GC were probed using 9 kinds of hormone antibodies 49 cases(67.2%) contained more than one hormone.NE cells were found more often in poorly differentiated GC than in well differentiated ones(P<0. 01).Expression of some kinds of hormone Was relative to the dif- ferentiation and histological types of GC.BOM,CT(P<0.01) GAST and 5-HT(P<0.05)were more expressed in poorly differ- entiated cases than in well defferentiated ones.Nineteen cases of the matastatic foci in regional lymph nodes were found to have CgA positive cancer cells.The presence of HCG in matastatic lymph nodes was more often observed than that of other hormone (P<0.01).The survival rate of patients with NE positive GC was 38.9% and negative GC 52.7%.Five of 7 patients(71. 4%)with somatostatin positive GC still survived at follow up of 33-66 months,but 4 patients with HCG positive GC died in 12-29 months. CONCLUSIONS The NE cells occur more frequently in poorly differentiated GC.Certain hormones appear to be related to the metastasis and prognosis. 展开更多
关键词 NEUROENDOCRINOLOGY stomach neoPlasms pathology IMMUNOHISTOCHEMISTRY HORMONE
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Chemical Constituents of Angelica sinensis 被引量:24
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作者 路新华 张金娟 +1 位作者 梁鸿 赵玉英 《Journal of Chinese Pharmaceutical Sciences》 CAS 2004年第1期1-3,共3页
Aim To investigate the active constituents responsible for thepharmacological activities of Angelica sinensis (Oliv) Diels. Methods Chromatography was used toisolate chemical components, and spectroscopy was used to i... Aim To investigate the active constituents responsible for thepharmacological activities of Angelica sinensis (Oliv) Diels. Methods Chromatography was used toisolate chemical components, and spectroscopy was used to identify their structures. Results Sevencompounds were isolated and their structures were identified as ferulic acid (1), conife-rylferukte(2) , bis (2-ethylhexyl) phthalate (3), dibutyl phthalate (4), lignoceric acid (5), palmitic acid(6), and Z-6, 7-cis-dihydroxyligustilide (7) Conclusion Bis (2-ethylhexyl) phthalate and dibutylphthalate were obtained from Angelica sinensis for the first time. 展开更多
关键词 angelica sinensis chemical constituents bis (2-ethylhexyl) phthalate dibutyl phthalate
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Thermodynamics of Cr(Ⅵ) adsorption on strong alkaline anion exchange fiber 被引量:3
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作者 王文庆 李明愉 曾庆轩 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第11期2831-2839,共9页
Removal of Cr(VI) from aqueous solution by strong alkaline anion exchange fiber (SAAEF) was achieved using batch adsorption experiments. The effect of contact time, initial Cr(VI) concentration and pH was invest... Removal of Cr(VI) from aqueous solution by strong alkaline anion exchange fiber (SAAEF) was achieved using batch adsorption experiments. The effect of contact time, initial Cr(VI) concentration and pH was investigated. The results showed that the maximum adsorption capacity of SAAEF was 187.7 mg/g at pH=1.0. The adsorption capacity increased with Cr(VI) concentration but decreased with pH value when pH〉1.0. Adsorption isotherms at various temperatures were obtained. Langmuir, Freundlich, Dubinin-Radushkevich and Temkin models were adopted and the equilibrium data fitted best with the Langmuir isotherm. The constants of these models indicated that the adsorption process involved both chemisorption and physisorption. The values of thermodynamic parameters, including DH, DG and DS, suggested that the adsorption of Cr(VI) on SAAEF was a spontaneous, entropy-driven and endothermic process. Q(iso) was not a constant value, which indicated an inhomogenous energy distribution on SAAEF. 展开更多
关键词 strong alkaline anion exchange fiber hexavalent chromium ISOTHERM THERMODYNAMICS CHEMISORPTION PHYSISORPTION
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Velocity of a Liquid Drop with a Sorption-Controlled Surfactant
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作者 陈晋南 《Journal of Beijing Institute of Technology》 EI CAS 1996年第2期116+107-116,共11页
The terminal velocity of a liquid droplet settling in a sulfactant solution has been studied for the non-linear adsorption Langmuir frameworks accounting for monolayer saturation and non-ideal surfactant interactions.... The terminal velocity of a liquid droplet settling in a sulfactant solution has been studied for the non-linear adsorption Langmuir frameworks accounting for monolayer saturation and non-ideal surfactant interactions. Most prior research uses a linear adsorption model which cannot capture these effects, The Maragoni migration of a liquid drop settling through a surfactant solution is examined by using Langmuir framework. The solution concentration Ceq is assumed large enough for the surfactant mass transfer to be adsorption-controlled. Langmuir model generates non-linear Marangoni stresses which diverge in the limit of approaching ∝, strongly retarding U'. 展开更多
关键词 Marangoni stresses non-linear adsorption Langmuir isotherm phpsco-chemical hydrodynamics mass transfer dynamic surface tension
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Design Criterion for Fixture Layout Based on the State Space Model in M ultistation Assembly Processes 被引量:2
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作者 张磊 周一帆 +1 位作者 张志胜 史金飞 《Journal of Donghua University(English Edition)》 EI CAS 2013年第3期175-181,共7页
The fixture layout is crucial to assure the product quality in a multistation assembly process (MAP). A well-designed fixture layout will make the final product's variability be insensitive to the fixture variation... The fixture layout is crucial to assure the product quality in a multistation assembly process (MAP). A well-designed fixture layout will make the final product's variability be insensitive to the fixture variation inputs. As the basis of the fixture layout design, the design criterion plays an important role in the effectiveness of a solution and the optimization efficiency. In this paper, an effective and efficient design criterion is proposed for the fixture layout with a fixed reference point (FRP) in an MAP. First of all, a state space model for the individual port's variation propagation and accumulation is developed, which is the mathematical foundation of the proposed criterion. Then, based on this model, a novel design criterion used to evaluate the performance of the fixture layout is proposed for the fixture layout with an FRP. Finally, a method extracted from the proposed design criterion is developed for quick fixture layout design. A four-station assembly process is used to validate the effectiveness and efficiency of the proposed models and methods. 展开更多
关键词 state space model covariance matrix fixed reference point (FRP) largest distance
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Kinetics and Mechanism of Decomposition of Nano-sized Calcium Carbonate under Non-isothermal Condition 被引量:7
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作者 刘润静 陈建峰 +2 位作者 郭奋 吉米 沈志刚 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2003年第3期302-306,共5页
Experiments on thermal decomposition of nano-sized calcium carbonate were carried out in a thermo-gravimetric analyzer under non-isothermal condition of different heating rates (5 to 20K·min-1). The Coats and Red... Experiments on thermal decomposition of nano-sized calcium carbonate were carried out in a thermo-gravimetric analyzer under non-isothermal condition of different heating rates (5 to 20K·min-1). The Coats and Redfern's equation was used to determine the apparent activation energy and the pre-exponential factors. The mechanism of thermal decomposition was evaluated using the master plots, Coats and Redfern's equation and the kinetic compensation law. It was found that the thermal decomposition property of nano-sized calcium carbonate was different from that of bulk calcite. Nano-sized calcium carbonate began to decompose at 640℃, which was 180℃lower than the reported value for calcite. The experimental results of kinetics were compatible with the mechanism of one-dimensional phase boundary movement. The apparent activation energy of nano-sized calcium carbonate was estimated to be 151kJ·mol-1 while the literature value for normal calcite was approximately 200kJ·mol-1. The order of magnitude of pre-exponential factors was estimated to be 10~9 s-1. 展开更多
关键词 nano-sized calcium carbonate non-isothermal decomposition kinetic mechanism
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Adrenal myelolipoma within myxoid cortical adenoma associated with Conn's syndrome 被引量:7
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作者 Hong-sheng LU Mei-fu GAN Han-song CHEN Shan-qiang HUANG 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2008年第6期500-505,共6页
The coexistence of myelolipoma within adrenal cortical adenoma is extremely rare,for both tumors present usually as separate entities.There are only 16 such cases reported worldwide.To the best of our knowledge,the ca... The coexistence of myelolipoma within adrenal cortical adenoma is extremely rare,for both tumors present usually as separate entities.There are only 16 such cases reported worldwide.To the best of our knowledge,the case we reported here is the first one of myxoid adrenal cortical adenoma associated with myelolipoma reported.A 32-year-old Chinese woman with 4-year history of hypertension was presented in our study.Computed tomography(CT)of the abdomen showed a large heterogene- ously-enhancing mass(4.5 cm in diameter)in the left suprarenal region.Clinical history and laboratory results suggest a metabolic disorder as Conn's syndrome.The patient underwent a left adrenalectomy,and a histopathological study confirmed the mass to be a myxoid adrenal cortical adenoma containing myelolipoma.The patient was postoperatively well and discharged uneventfully.In the present case report,we also discuss the etiology of simultaneous myelolipoma and adrenal adenoma associated with Conn's syndrome,and the methods of the diagnosis and differential diagnosis. 展开更多
关键词 Adrenal gland Myxoid adrenal cortical adenoma MYELOLIPOMA Conn's syndrome PATHOLOGY IMMUNOHISTOCHEMISTRY
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Carcinosarcoma of the stomach:A case report and review of the literature 被引量:3
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作者 Tomislav Randjelovic Branka Filipovic +2 位作者 Darko Babic Vesna Cemerikic Branislav Filipovic 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第41期5533-5536,共4页
Carcinosarcomas are rare,malignant,biphasic tumors. We report the case of a 62-year-old man with gastric carcinosarcoma,along with its clinical,macroscopic and histopathological features. Macroscopically,a specimen of... Carcinosarcomas are rare,malignant,biphasic tumors. We report the case of a 62-year-old man with gastric carcinosarcoma,along with its clinical,macroscopic and histopathological features. Macroscopically,a specimen of deformed stomach was obtained that measured 200 mm×150 mm×100 mm. A 150 mm×100 mm× 50 mm exophytic tumoral mass (Borrmann typeⅠ) was found,which involved the posterior wall from the cardia to the antrum. Histopathologically,a mixed type of malignancy was revealed: an adenocarcinoma with intestinal metaplasia,with interposed fascicles of fusiform atypical cells and numerous large,rounded and oval cells. The tumor showed positive histochemistry for cytokeratin 18,epithelial membrane antigen,carcinoembryonic antigen,chromogranin A and vimentin. Liver metastases were diagnosed 8 mo postoperatively,and the patient died 4 mo later. A review of the available literature is also presented. 展开更多
关键词 CARCINOSARCOMA HISTOCHEMISTRY PATHOLOGY STOMACH
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Electrochemical treatment of wastewater containing chlorophenols using boron-doped diamond film electrodes 被引量:4
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作者 王建功 李学敏 《Journal of Central South University》 SCIE EI CAS 2012年第7期1946-1952,共7页
The electrochemical treatment of wastewater containing chlorophenols (2-monochlorophenol, 4-monochlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol) was carried out experimentally with synthetic boron-d0ped diam... The electrochemical treatment of wastewater containing chlorophenols (2-monochlorophenol, 4-monochlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol) was carried out experimentally with synthetic boron-d0ped diamond (BDD) thin film electrodes. Current vs time curves under different cell voltages were measured. Removal rate of COD, instant current efficiency (ICE) and energy consumption were investigated under different current densities. The influence of supporting media is reported, which plays an important role in determining the global oxidation rate. The oxidative chloride is stronger than peroxodisulphate. The electrochemical characteristics of boron-doped diamond electrodes were investigated in comparison with active coating Ti substrate anode (ACT). The experimental results show that BDD is markedly superior to ACT due to its different absorption properties. 展开更多
关键词 boron-doped diamond electrochemical treatment CHLOROPHENOL WASTEWATER
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Siderophores from Marine Microorganisms and Their Applications 被引量:8
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作者 LIJunfeng CHIZhenming 《Journal of Ocean University of China》 SCIE CAS 2004年第1期40-47,共8页
In view of the fact that siderophores from microorganisms in different environments have received much attention in recent years because of their potential applications and diverse physiological functions, this review... In view of the fact that siderophores from microorganisms in different environments have received much attention in recent years because of their potential applications and diverse physiological functions, this review deals with side rophore producing marine microorganisms and the detection, chemical structure and potential applications of siderophores. 展开更多
关键词 SIDEROPHORES marine microorganisms CYANOBACTERIA APPLICATION
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Extremely well-differentiated adenocarcinoma of the stomach: Clinicopathological and immunohistochemical features 被引量:19
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作者 Takashi Yao Takashi Utsunomiya +2 位作者 Masafumi Oya Kenichi Nishiyama Masazumi Tsuneyoshi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第16期2510-2516,共7页
AIM: Minimal deviation carcinoma of the uterine cervix, otherwise known as extremely well-differentiated adenocarcinoma (EWDA), is characterized by its benign microscopic appearance in contrast to its aggressive be... AIM: Minimal deviation carcinoma of the uterine cervix, otherwise known as extremely well-differentiated adenocarcinoma (EWDA), is characterized by its benign microscopic appearance in contrast to its aggressive behavior. In order to elucidate the clinicopathological features and biological behavior of the gastric counterpart of EWDA, we, using immunohistochemistry, analyzed nine lesions for the phenotypic expression, proliferative activity, and the expression of oncogene-associated products. METHODS: Clinicopathological features, including preoperative biopsy diagnosis, were reviewed. Using immunohitstochemistry, Ki-67 labeling index and expression of p53 and c-erbB-2 protein in the gastric lesions were detected.RESULT: Locations in the middle or upper third of the stomach and polypoid macroscopic features are characteristic of EWDA of the stomach. Although 4 of the 9 lesions showed only focal lymphatic or venous invasion, lymph node metastasis was not present and none of the patients died of the lesions (mean follow-up period, 56 too). All 9 cases of EWDA could be classified into gastric phenotype (5 lesions) and intestinal phenotype (4 lesions). The former resembled gastric foveolar epithelium, mucous neck cells or pyloric glands, but their papillary structures were frequently elongated and the tumor cellsand their nuclei were slightly larger and more hyperchromatic compared to normal epithelium. The latter resembled intestinal metaplasia with minimal nulcear atypia and irregular glands; two of these lesions demonstrated complete intestinal phenotype, while two demonstrated incomplete intestinal phenotype. Ki-67 labeling index was low and none of the cases revealed over-expression of p53 and c-erbB-2 protein. CONCLUSION: Unlike minimal deviation carcinoma of the cervix, these findings suggest that EWDA of the stomach is a lesion of low-grade malignancy. This favorable biological behavior is supported by the data of a low Ki-67 labeling index and a lack of p53 or c-erbB-2 protein over-expression. Because of its resemblance to normal gastric mucosa or mucosa with intestinal metaplasia, EWDA is often misdiagnosed. To prevent the misdiagnosis of such lesions, the clinical and pathologic characteristics should be taken into consideration. 展开更多
关键词 Stomach neoplasms Extremely well-differen-tiated adenocarcinoma Ki-67 p53 c-erbB-2
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Bile acids:Chemistry,physiology,and pathophysiology 被引量:47
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作者 Maria J Monte Jose JG Marin +1 位作者 Alvaro Antelo Jose Vazquez-Tato 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第7期804-816,共13页
The family of bile acids includes a group of molecular species of acidic steroids with very peculiar physical-chemical and biological characteristics.They are synthesized by the liver from cholesterol through several ... The family of bile acids includes a group of molecular species of acidic steroids with very peculiar physical-chemical and biological characteristics.They are synthesized by the liver from cholesterol through several complementary pathways that are controlled by mechanisms involving finetuning by the levels of certain bile acid species.Although their best-known role is their participation in the digestion and absorption of fat,they also play an important role in several other physiological processes.Thus,genetic abnormalities accounting for alterations in their synthesis,biotransformation and/or transport may result in severe alterations,even leading to lethal situations for which the sole therapeutic option may be liver transplantation.Moreover,the increased levels of bile acids reached during cholestatic liver diseases are known to induce oxidative stress and apoptosis,resulting in damage to the liver parenchyma and,eventually,extrahepatic tissues.When this occurs during pregnancy,the outcome of gestation may be challenged.In contrast,the physical-chemical and biological properties of these compounds have been used as the bases for the development of drugs and as pharmaceutical tools for the delivery of active agents. 展开更多
关键词 CHOLESTASIS CHOLESTEROL Liver METABOLISM Transport
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Design of best performing hexagonal shaped Ag@CoS/rGO nanocomposite electrode material for electrochemical supercapacitor application 被引量:3
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作者 Alagu Segar DEEPI Arputharaj Samson NESARAJ 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第10期2764-2774,共11页
The mixed metal/metal sulphide(Ag@CoS)with reduced graphene oxide(rGO)nanocomposite(Ag@CoS/rGO)was synthesized for the possible electrode in supercapacitors.Ag@CoS was successfully deposited on the rGO nanosheets by h... The mixed metal/metal sulphide(Ag@CoS)with reduced graphene oxide(rGO)nanocomposite(Ag@CoS/rGO)was synthesized for the possible electrode in supercapacitors.Ag@CoS was successfully deposited on the rGO nanosheets by hydrothermal method,implying the growth of 2D Ag and CoS-based hexagonal-like structure on the rGO framework.The synthesized nanocomposite was subjected to structural,morphological and electrochemical studies.The XRD results show that the prepared nanocomposite material exhibits a combination of hexagonal and cubic phase due to the presence of CoS and Ag phases together.The band appearing at nearly 470.33 cm^−1 in FTIR spectra can be ascribed to the absorption of S—S bond in the Ag@CoS/rGO nanocomposite.The clear hexagonal structure was analysed by SEM and TEM with the grain sizes ranging from nanometer to micrometer.The electrode material exhibits excellent cyclic stability with a specific capacitance of 1580 F/g at a current density of 0.5 A/g without any loss of capacitive retention even after 1000 cycles.Based on the electrochemical performance,it can be inferred that the prepared novel nanocomposite material is very suitable for using as an electrode for electrochemical supercapacitor applications. 展开更多
关键词 Ag@CoS/rGO electrode hydrothermal reaction physicochemical characteristics electrochemical performance electrochemical supercapacitor
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Correlation of Cooperatively Localized Rearrangement on the "Fluidized Domain" of Polymers to Their Nonexponentially Viscoelastic Behaviors at Double Aging Processes (I): A Set of Reduced Universal Equations on the Stress Relaxation Modulus and Creep Comp
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作者 刘颖 宋名实 +2 位作者 金艳 胡桂贤 吴大鸣 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2010年第1期45-64,I0001,共21页
Based on the structure of glass (or liquid) polymers consisting of α-domain, β-co-domain, and entanglement constituent chain networks, and the nonexponentially viscoelastic behavior, a “heterophase fluctuation” ... Based on the structure of glass (or liquid) polymers consisting of α-domain, β-co-domain, and entanglement constituent chain networks, and the nonexponentially viscoelastic behavior, a “heterophase fluctuation” model was proposed. It was found that the dynamics of cooperative rearrangement on the “fluidized domain” has a great shear rate, domain size, and temperature dependences. When the shear rate, domain size, and temperature dependences were taken account into the cooperatively localized rearrangement on the fluidized domain by the degradation of primary α-domain and the reformation of secondary β-co-domain constituent chains. A new dynamic theory of cooperatively localized rearrangement on the fluidized domain constituent chains with different size and different network chain length during physical and mechanical aging was established. The total viscoelastic free en-ergy of deformation resulting from the change in conformations of α-domain, β-co-domain, crytallite, crosslinked, and trapped entanglement constituent chains during aging processes was calculated by the combining method of kinetics and statistical mechanics. The constitu- tive equations and reduced stress relaxation modulus and creep compliances for three types of polymers were also derived. Finally, two reduced universal equations on creep compliance and stress relaxation modulus with a non-linear and two nonexponential parameters α and β were theoretically derived from the dynamic theory and a statistically extended mode coupling theory for double aging effects of polymers was developed. Results show that the two reduced universal equations have the same form as Kohlraush-Williams-Watts (K-W-W) stretched exponential function. The nonlinearity and the nonexponentiality are, respectively, originated from the memory effects of nonthermal and thermal history. The correlation of nonlinearity, α and β to the aging time, aging temperature, and the mesomorphic structure of fluidized domains was also established. 展开更多
关键词 Heterophrase fluctuation model Kinetics of aging Dynamics of de-aging Creep and stress relaxation K-W-W decay function Fluidized domain constituent chain
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Tupu methods of spatial-temporal pattern on land use change:a case study in the Yellow River Delta 被引量:15
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作者 YEQinghua TIANGuoliang +5 位作者 LIUGaohuan YEJingmin YAOXin LIUQingsheng LOUWeiguo WUShuguang 《Journal of Geographical Sciences》 SCIE CSCD 2004年第2期131-142,共12页
Comprehensive study on land-use change of spatial pattern and temporal process is the key component in LUCC study nowadays. Based on the theories and methods of Geo-information Tupu (Carto-methodology in Geo-informati... Comprehensive study on land-use change of spatial pattern and temporal process is the key component in LUCC study nowadays. Based on the theories and methods of Geo-information Tupu (Carto-methodology in Geo-information, CMGI), integration of spatial pattern and temporal processes of land-use change in the Yellow River Delta (YRD) are studied in the paper, which is supported by ERDAS and ARC/INFO software. The main contents include: (1) concept models of Tupu by spatial-temporal integration on land-use change, whose Tupu unit is synthesized by "Spatial·Attribute·Process" features and composed of relatively homogeneous geographical unit and temporal unit; (2) data sources and handling process, where four stages of spatial features in 1956, 1984, 1991, and 1996 are acquired; (3) integration of series of temporal-spatial Tupu, reconstruction series of "Arising" Tupu, spatial-temporal Process Tupu and the spatial temporal Pattern Tupu on land-use change by remap tables; (4) Pattern Tupu analysis on land-use change in YRD during 1956-1996; and (5) spatial difference of the Pattern Tupu analysis by dynamic Tupu units. The various landform units and seven sub-deltas generated by the Yellow River since 1855 are different. The Tupu analysis on land-use in the paper is a promising try on the comprehensive research of "spatial pattern of dynamic process" and "temporal process of spatial pattern" in LUCC research. The Tupu methodology would be a powerful and efficient tool on integrated studies of spatial pattern and temporal process in Geo-science. 展开更多
关键词 Geo-information Tupu spatial-temporal analysis the Yellow River Delta (YRD) land-use changes Tupu unit
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