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论元代中期诗风趋于雅正的成因
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作者 高邢生 《湖北函授大学学报》 2015年第1期176-177,194,共3页
元灭南宋前,南、北方的学术与诗文各自独立发展,无甚交流。"南士北游"率先打通了这种隔断,南、北方的学术与诗文在大都产生了交流融合。在交流过程中,南方的诗学理念与诗文传统逐渐占据主导地位。延祐间,袁桷、虞集等南方文... 元灭南宋前,南、北方的学术与诗文各自独立发展,无甚交流。"南士北游"率先打通了这种隔断,南、北方的学术与诗文在大都产生了交流融合。在交流过程中,南方的诗学理念与诗文传统逐渐占据主导地位。延祐间,袁桷、虞集等南方文士倡导雅正的诗文风格,并通过雅集唱和、奖掖后进等方式影响着诗坛的诗文创作倾向。在他们的影响下,元中期雅正诗风形成。 展开更多
关键词 元中期 雅正诗风 成因
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透视元末文坛巨擘杨维桢的诗学精神底色
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作者 张素梅 《宁夏大学学报(人文社会科学版)》 2023年第3期24-32,共9页
杨维桢是元代诗文巨公,然而人们对杨维桢的认识,趋于极端化、单一化,多限于其震荡凌厉的古乐府创作,忽略了他认同元中期诗学精神风尚的一面。其一,杨氏崇尚雅正:认同元中期提倡的风雅精神,将薄乎风雅作为诗歌的审美理想;又“雅”与“俗... 杨维桢是元代诗文巨公,然而人们对杨维桢的认识,趋于极端化、单一化,多限于其震荡凌厉的古乐府创作,忽略了他认同元中期诗学精神风尚的一面。其一,杨氏崇尚雅正:认同元中期提倡的风雅精神,将薄乎风雅作为诗歌的审美理想;又“雅”与“俗”相对,他批评今乐府媟邪鄙野,崇尚大雅之音,认为诗歌在情志、文辞、体制风格等方面应符合儒家经典范式。其二,秉持元中期有益风化的诗教精神,要求诗歌或能道扬讽谕,有益世道人心;或可鸣国家之盛,黼黻太平气象。元中期馆阁文人群体集中体现了元中期的诗学精神,故杨氏推重这一群体并赞赏他们“辞平和而意深长”的和易诗风。且通观铁崖之诗,并非都是追求奇气、坠入魔趣者,也有不少延续了元中期诗风的平易之作。通过以上研究,能更客观、全面地认识杨维桢的诗学精神底色与诗歌创作,且对研究元中期到元后期诗风之演进有重要意义。 展开更多
关键词 杨维桢 元中期 雅正 风教 和易
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Relationship between red blood cell distribution width and intermediate-term mortality in elderly patients after percutaneous coronary intervention 被引量:7
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作者 Xin-Min LIU Chang-Sheng MA Xiao-Hui LIU Xin DU Jun-Ping KANG Yin ZHANG Jia-Hui WU 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2015年第1期17-22,共6页
Background Large-scale clinical research on the relationship between red blood cell distribution width (RDW) and intermediate-term prognosis in elderly patients with coronary artery disease (CAD) is lacking. Thus,... Background Large-scale clinical research on the relationship between red blood cell distribution width (RDW) and intermediate-term prognosis in elderly patients with coronary artery disease (CAD) is lacking. Thus, this study investigated the effects of RDW on the intermediate-term mortality of elderly patients who underwent elective percutaneous coronary intervention (PCI). Methods Data from 1891 patients 〉 65 years old underwent elective PCI from July 2009 to September 2011 were collected. Based on preoperative median RDW (12.3%), the patients were divided into two groups. The low RDW group (RDW 〈 12.3%) had 899 cases; the high RDW group (RDW 〉 12.3%) had 992 cases. The all-cause mortality rates of the two groups were compared. Results Patients in the high RDW group were more likely to be female and accompanied with diabetes, had lower hemoglobin level. The mean follow-up period was 527 days. During follow-up, 61 patients died (3.2%). The postoperative mortality of the high RDW group was significantly higher than that of the low RDW group (4.3% vs. 2.0%, P = 0.004). After adjusting other factors, multivariate Cox regression analysis revealed that preoperative high RDW was significantly associated with postoperative all-cause mortality (hazard ratio: 2.301, 95% confidence interval: 1.106-4.785, P = 0.026). Conclusions Increased RDW was an independent predictor of the increased intermediate-term all-cause mortality in elderly CAD patients after elective PCI. 展开更多
关键词 Coronary artery disease Elderly patients Percutaneous coronary intervention Red blood cell distribution width
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Precambrian crustal evolution in Rangrim Massif,Korean Peninsula 被引量:2
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作者 LYANG To Jun LIU Yongjiang +3 位作者 YANG Jong Hyok KIM Hon HAN Ryong Yon KIM Jong Nam 《Global Geology》 2009年第2期57-63,共7页
Petrological,chronological and geotectonic geological analysis of Precambrian metamorphic rock in Korean Peninsula shows that the remnants(>3.4 Ga) of continental nuclei crust were formed in the Paleoarchean in the... Petrological,chronological and geotectonic geological analysis of Precambrian metamorphic rock in Korean Peninsula shows that the remnants(>3.4 Ga) of continental nuclei crust were formed in the Paleoarchean in the Rangrim Massif.In the massif,the main formation ages of continental crust range from 3.2 Ga to 2.5 Ga,its important growing period was 2.8-2.5 Ga.The subsequent expansion period of the Rangrim Massif was 2.4-2.2 Ga.The division events occurred in 1.85 Ga and in the Late Paleoproterozoic--Early Mesopro-terozoic,respectively.Since then the massif was relatively stable.However,the last division of the Rangrim Massif occurred at 793 Ma. 展开更多
关键词 Korean peninsula Rangrim massif PRECAMBRIAN Paleoarchean continental nucleus Korea-China Craton
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Dynamic Characteristic of the Medium Span Concrete Footbridges
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作者 Marek Pafitak 《Journal of Civil Engineering and Architecture》 2014年第11期1445-1452,共8页
Concrete footbridges, due to their mass, stiffness and damping, are perceived as strucaires more resistant to vibration caused by dynamic action of the users. In order to verify the dynamic behaviour of concrete footb... Concrete footbridges, due to their mass, stiffness and damping, are perceived as strucaires more resistant to vibration caused by dynamic action of the users. In order to verify the dynamic behaviour of concrete footbridges, a series of field tests and numerical analyses have been carried out. In the paper, the results of the dynamic field tests of three medium span concrete footbridges with different structural systems (frame, beam and arch footbridges) and their dynamic characteristics (mass, stiffness and damping) are presented. The field tests were carried out for different types of vibration excitation caused by walking, running and jumping persons. Furthermore, the vibrational comfort criteria for footbridges are shortly described and verified for examined structures. The study were supplemented by numerical calculation of natural mode shapes and frequencies of the structures using the 3D FEA (finite element analysis) models with elastic supports elements in order to ensure the compatibility of the calculated and measured mode shapes of the footbridges. 展开更多
关键词 Footbridge vibrations concrete footbridges comfort criteria.
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Mesoproterozoic to Paleozoic Nd isotope stratigraphy of the South China continental nucleus and its geological significance 被引量:9
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作者 BAI Xiao LING WenLi +7 位作者 DUAN RuiChun QIU XiaoFei LIU ChengXin KUANG Hua GAO YongJuan ZHOU Lian CHEN ZiWan LU Shah-Song 《Science China Earth Sciences》 SCIE EI CAS 2011年第11期1665-1674,共10页
The Yangtze continental nucleus in South China is situated in the Huangling-Shennongjia area in western Hubei Province.It comprises the early Precambrian crystalline basement and generally successive Proterozoic to Ph... The Yangtze continental nucleus in South China is situated in the Huangling-Shennongjia area in western Hubei Province.It comprises the early Precambrian crystalline basement and generally successive Proterozoic to Phanerozoic sedimentary covers.This paper reports a comprehensive Nd isotope study of fine-grained sedimentary rocks from the regional Mesoproterozoic to early Paleozoic strata.The Nd model ages display a V-shaped variation from ~2.5-2.8 Ga during the late Mesoproterozoic through ~1.5-1.7 Ga during the Neoproterozoic Nanhua Period to ~1.8-2.1 Ga during the Paleozoic Ordovician,with corresponding Nd (t) ranges of 11 to 14,1.1 to 5.3,and 7.9 to 9.9,respectively.This evolutionary trend broadly resembles those documented in the sedimentary strata along the southeastern margin of the Yangtze Craton and within the Jiangnan orogenic belt,indicating that the whole South China block underwent a mantle-input related tectono-magmatic event at ~0.8 Ga or earlier.However,the Huangling-Shennongjia area is discriminated from the other two regions by highly variable model ages (~1.5-2.7 Ga) and Nd (t) values (1.38-12.0) of the early Mesoproterozoic strata.Combined with the Archean model ages of the late Mesoproterozoic strata,it is suggested that the Mesoproterozoic sedimentary provenance of the Yangtze continental nucleus was distinct from that of the southeastern Yangtze Craton,likely indicative of an intervening aulacogen (or rift zone) or oceanic basin.In addition,the high comparability in Neoproterozoic to Paleozoic Nd isotope stratigraphy between the Yangtze Craton and the Jiangnan orogenic belt infers that the whole South China block had shared the same sedimentary basin and provenance since the Yangtze-Cathaysia welding at ~0.9 Ga.Thus,it is proposed that the Yangtze Craton had comprised a collage of micro-continents during the pre-Neoproterozoic until the Rodinia assemblage when the primitive South China block was formed. 展开更多
关键词 Yangtze continental nucleus fine-grained sedimentary strata Nd isotope model age micro-continents ASSEMBLAGE
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Dynamics of Soil and Grain Micronutrients as Affected by Long-Term Fertilization in an Aquic Inceptisol 被引量:14
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作者 LI Ben-Yin HUANG Shao-Min +4 位作者 WEI Ming-Bao H. L. ZHANG SHEN A-Lin XU Jian-Ming RUAN Xin-Ling 《Pedosphere》 SCIE CAS CSCD 2010年第6期725-735,共11页
Micronutrient status in soils can be affected by long-term fertilization and intensive cropping.A 19-year experiment (1990-2008) was carried out to investigate the influence of different fertilization regimes on micro... Micronutrient status in soils can be affected by long-term fertilization and intensive cropping.A 19-year experiment (1990-2008) was carried out to investigate the influence of different fertilization regimes on micronutrients in an Aquic Inceptisol and maize and wheat grains in Zhengzhou,China.The results showed that soil total Cu and Zn markedly declined after 19 years with application of N fertilizer alone.Soil total Fe and Mn were significantly increased mainly due to atmospheric deposition.Applications of P and organic fertilizer with incorporation of straws resulted in dramatic increases in soil total Cu,Zn,Fe,and Mn.Soil diethylenetriamine pentaacetic acid (DTPA)-extractable Cu in all treatments sharply decreased from initially 1.12 to about 0.8 mg kg -1 .The treatments with organic fertilizer had the highest soil DTPA-extractable Cu,Zn,Fe,and Mn after 19 years of cropping and fertilization,thus demonstrating the important role of organic fertilizer application in improving available micronutrient status.Cu and Zn contents in wheat grains in the no-P treatments were significantly higher than those of the treatments with P application.In addition,Fe and Mn contents in wheat grains were positively correlated with their soil DTPA-extractable concentrations.These indicated that the long-term application of organic fertilizer resulted in significant increases in soil total and available micronutrient concentrations and remarkable reduction in wheat grain Cu and Zn contents,which was due to high soil available P. 展开更多
关键词 Cu organic fertilizer soil available P WHEAT Zn
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