检索结果-南通市图书馆

THE EXISTENCE OF A BOUNDED INVARIANT REGION FOR COMPRESSIBLE EULER EQUATIONS IN DIFFERENT GAS STATES

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2020年第5期40卷 1229-1239页

作者： weifeng jiang Zhen WANG College of Science China Jiliang UniversityHangzhou 310018China College of Science Wuhan University of TechnologyWuhan 430071China

In this article,by the mean-integral of the conserved quantity,we prove that the one-dimensional non-isentropic gas dynamic equations in an ideal gas state do not possess a bounded invariant ***,we obtain a necessary condition on the state equations for the existence of an invariant region for a non-isentropic ***,we provide a mat hematical example showing that with a special state equation,a bounded invariant region for the non-isentropic process may exist.

关键词： Euler equations gas dynamic non-isentropic existence of invariant region

HELICAL SYMMETRIC SOLUTION OF 3D NAVIER-STOKES EQUATIONS ARISING FROM GEOMETRIC SHAPE OF THE BOUNDARY

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2018年第3期38卷 1057-1104页

作者： weifeng jiang Kaitai LI School of Sciences Department of MathematicsWuhan University of Technolog School of Mathematics and Statistics Xi＇an Jiaotong Universit

In this article, we investigate three-dimensional solution with helical symmetry in a gap between two concentric rotating cylinders, inside is a helicoidal surface（screw propeller）while outside is a cylindrical surface. Establish the partial differential equations and its variational formulation satisfied by a helical solution in a helical coordinate system using tensor analysis method, we provide a computational method for the power and propulsion of the screw. The existence and uniqueness of weak helical solutions are proved.

关键词： Navier-Stokes equations helicoidal surface rotating helical flow

A 3D Ba-MOF for selective adsorption of CO_(2)/CH_(4)and CO_(2)/N_(2)

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第3期32卷 1169-1172页

作者： Xiaokang Wang Yutong Wang Kebin Lu weifeng jiang Fangna Dai College of Science School of Materials Science and EngineeringChina University of Petroleum(East China)Qingdao 266580China

An unexpected in-situ hydrolysis reaction occurred during the solvothermal reaction of N,N’-bis(4-carboxy-2-methylphenyl)pyromellitic di-imide)and Ba(NO3)2,and a novel porous Ba-MOF,[H_(2)N(CH_(3))_(2)]_(0.5)[Ba_(1.5)(L)(DMA)]·1.5 DMA·1.5 H_(2)O(UPC-70,H_(3)L=2-(4-ca rboxy-2-methylphenyl)-1,3-dioxoisoindoline-5,6-dicarboxylic acid,DMA=N,N-dimethylacetamide),was obtained on the basis of the partial *** as-synthesized 3 D network with 1 D open channels of different sizes(24 A and 10 A)contains abundant open metal sites after removal of solvents,which is conducive to the preferential adsorption of CO_(2).The subsequent gas sorption measurement reveals the high separation selectivity of UPC-70 for CO_(2)/CH_(4)(15)and CO_(2)/N_(2)(32)at ambient conditions,and GCMC theoretical simulation provides good verification of the experimental results,indicating that UPC-70 is a potential candidate for CO_(2)capture from flue gas and natural gas.

关键词： Metal-orgamc Tramework In-situ hydrolysis Selective adsorption CO_(2)capture CCMC simulation

Enrichment and detection of circulating tumor cells in peripheral blood

在线全文

学校读者我要写书评

暂无评论

The Chinese-German Journal of Clinical Oncology 2011年第4期10卷 240-244页

作者： weifeng jiang Helong Zhang Department of Oncology Tangdu Hospital Fourth Military Medical University Xi＇an 710038 China

Metastasis usually presents in the different courses of tumor diseases and associates with poor *** tumor cells(CTC) are considered to be essential for conforming metastasis and can be detected in tumor patients' peripheral *** are not easily detected by conventional cytology methods because of their low frequency in peripheral *** article reviews the recent research results on this subject,and also discusses the problems and prospects in this area.

关键词： circulating tumor cells tumor markers neoplasm metastasis enrichment technique detection technique

THE RIEMANN PROBLEM WITH DELTA INITIAL DATA FOR THE NON-ISENTROPIC IMPROVED AW-RASCLE-ZHANG MODEL

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2023年第1期43卷 237-258页

作者：蒋伟峰陈停停李彤王振 College of Science Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang ProvinceChina Jiliang UniversityHangzhou310018China School of Mathematics and Physics China University of GeosciencesWuhan430074China Department of Mathematics The University of IowaIowaIA52246USA Center for Mathematical Sciences and Department of Mathematics Wuhan University of TechnologyWuhan430070China

In this paper,we study the Radon measure initial value problem for the nonisentropic improved Aw-Rascle-Zhang *** arbitrary convex F(u)in this model we construct the Riemann solutions by elementary waves andδ-shock waves using the method of generalized characteristic *** obtain the solutions constructively for initial data containing the Dirac measure by taking the limit of the solutions for that with three piecewise ***,we analyze different kinds of wave interactions,including the interactions of theδ-shock waves with elementary waves.

关键词： Riemann problem non-isentropic improved Aw-Rascle-Zhang model δ-shock wave wave interactions traffic flow

在线全文

学校读者我要写书评

暂无评论

新时代泰山“挑山工”精神的文化生成

山东社会科学 2021年第7期 177-182页

作者：姜维枫山东社会科学院文化研究所山东济南250100

新时代泰山“挑山工”精神是自然泰山与诗文泰山共同化育的时代结晶,是泰山神话与泰山信仰共同陶铸的时代精魂,是泰山庙堂文化与民间文化共同孕育的硕果,是中华优秀传统文化、红色革命文化、社会主义先进文化共同铸造的精华。新时代泰... 详细信息

新时代泰山“挑山工”精神是自然泰山与诗文泰山共同化育的时代结晶,是泰山神话与泰山信仰共同陶铸的时代精魂,是泰山庙堂文化与民间文化共同孕育的硕果,是中华优秀传统文化、红色革命文化、社会主义先进文化共同铸造的精华。新时代泰山“挑山工”精神的独特价值在于其文化的丰富性与融合性、历史的久远性与连续性,以及践行的群体性与现实性。新时代泰山“挑山工”精神将作为中华民族精神的象征而彪炳史册。

关键词：新时代 “挑山工”精神泰山文化中华文化民族精神

在线全文

学校读者我要写书评

暂无评论

论蒲松龄辞赋创作的通俗化倾向

明清小说研究 2020年第2期 210-231页

作者：姜维枫山东大学文学院山东社会科学院文化所

蒲松龄辞赋创作的通俗化倾向主要呈现为题材的世俗化、世情的厉俗化、格调的戏谑化、语言的通俗化,通俗化倾向亦敷布于包括小说《聊斋志异》在内的蒲氏各类文体创作之中,并形成文体间的彼此映照与呼应。此与清初主流文坛"赞美盛世"之音... 详细信息

蒲松龄辞赋创作的通俗化倾向主要呈现为题材的世俗化、世情的厉俗化、格调的戏谑化、语言的通俗化,通俗化倾向亦敷布于包括小说《聊斋志异》在内的蒲氏各类文体创作之中,并形成文体间的彼此映照与呼应。此与清初主流文坛"赞美盛世"之音、服务"文治""务本勤民"之事功及追求"雍容揄扬""导扬徽美""博洽雅丽"的审美特征不同。由蒲松龄辞赋创作的通俗化倾向出发,通观其全部作品,对研究认识蒲松龄的生活观念状态及作品的审美特征与价值等或有裨益。

关键词：蒲松龄辞赋通俗化《聊斋志异》清初文坛

身当无奈何将隐事在莫须有更悲--孔尚任罢官疑案的历史底蕴

在线全文

学校读者我要写书评

暂无评论

孔子研究 2020年第2期 125-139页

作者：姜维枫山东社会科学院文化研究所济南250002

孔尚任"罢官疑案"的历史底蕴可归结为圣裔与圣君价值取向的悖离:孔尚任一生仕宦与才人形象的悖离、非官与非民身份的尴尬、期待与失意的交织等形成其人生的主调--抱怨闲官冷署官微俸薄而牢骚太盛、耽于诗文而荒废政务、真才人而非醇儒;... 详细信息

孔尚任"罢官疑案"的历史底蕴可归结为圣裔与圣君价值取向的悖离:孔尚任一生仕宦与才人形象的悖离、非官与非民身份的尴尬、期待与失意的交织等形成其人生的主调--抱怨闲官冷署官微俸薄而牢骚太盛、耽于诗文而荒废政务、真才人而非醇儒;康熙皇帝则欲以任用汉臣、推重汉文化来消解与缓和民族矛盾,以"尊孔崇儒重道"讲其道统,以"经世致用,实心实证"论其政统,以理学融合"道统"与"治统"。两相比较,显然圣裔有负圣君特例拔擢之初衷。《桃花扇》的轰动又让康熙皇帝对孔尚任更加失望,因此,圣君只能含糊其辞地示意户部罢其官。康熙皇帝有意识地不加罪于孔尚任,正是圣君的高明之处。

关键词：孔尚任罢官疑案《桃花扇》治统道统

“温柔敦厚”与“风雅正变”——清初遗民对传统诗学的接受与突破

在线全文

学校读者我要写书评

暂无评论

山东师范大学学报（社会科学版） 2022年第1期67卷 107-116页

作者：姜维枫山东社会科学院文化研究所山东济南250002

“温柔敦厚”诗学生成于“华夷之辨”思想张力尚未完全形成的春秋末期。《诗三百》“虽主于温柔敦厚,然亦有直斥其人而不讳者”,“变风变雅”存焉。对于“温柔敦厚”诗学,后世倡导者有之,突破者有之。明清易代,中原板荡,华夷易处,遗民... 详细信息

“温柔敦厚”诗学生成于“华夷之辨”思想张力尚未完全形成的春秋末期。《诗三百》“虽主于温柔敦厚,然亦有直斥其人而不讳者”,“变风变雅”存焉。对于“温柔敦厚”诗学,后世倡导者有之,突破者有之。明清易代,中原板荡,华夷易处,遗民直面传统诗学,主张风雅正变系乎时,认为“愤而不失其正,固无妨于温柔敦厚”,从诗学理论与诗文创作两个维度实践“变风变雅”之音,实现对“温柔敦厚”诗学的接受与突破。

关键词：明清易代风雅正变温柔敦厚遗民诗学