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俄罗斯古城的发展与改造

世界建筑 1991年第6期 25-29页

作者：邦达.,ia 奚春雁苏联建筑理论历史研究所副所长建筑博士

从俄罗斯古城的历史发展过程中,启迪人们:怎样在新建筑群中组织好新旧建筑之间的关系?谁主谁从?是否可以把古建筑纳入到它所不适应的新的构图体系中来?是否有必要对古建文物存在过程的所有文化积淀都加以保护,还是复原它最初的形象或它... 详细信息

从俄罗斯古城的历史发展过程中,启迪人们:怎样在新建筑群中组织好新旧建筑之间的关系?谁主谁从?是否可以把古建筑纳入到它所不适应的新的构图体系中来?是否有必要对古建文物存在过程的所有文化积淀都加以保护,还是复原它最初的形象或它在黄金时代的形象?在古代城市与古建文物中,哪些民族特性值得继承和发扬。

关键词：建筑物俄罗斯保护改造古代

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对芬兰斯堪的亚北部二维地震层析资料的研究

世界地震译丛 1993年第1期24卷 28-32页

作者： Sani.,ia 陶裕录

Designing Artemisinins with Antimalarial Potential, Combining Molecular Electrostatic Potential, Ligand-Heme Interaction and Multivariate Models

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Computational Chemistry 2023年第1期11卷 1-23页

作者： Josué de Jesus Oliveira Araújo Ricardo Morais de Miranda Jeferson Stiver Oliveira de Castro Antonio Florêncio de Figueiredo Ana Cecília Barbosa Pinheiro Sílvia Simone dos Santos Morais Marcos Antonio Barros dos Santos Andréia de Lourdes Ribeiro Pinheiro Andréia de Lourdes Ribeiro Pinheiro Fábio dos Santos Gil Heriberto Rodrigues Bitencourt Gustavo Nery Ramos Alves José Ciríaco Pinheiro Laboratório de Química Teórica e Computacional Universidade Federal do Pará Belém PA Brasil Instituto Federal de Educaç ã o Ciência e Tecnologia do Pará Belém PA Brasil Universidade do Estado do Amapá Macapá AP Brasil Fundaç ã o Santa Casa de Misericórdia do Pará Belém PA Brasil Universidade do Estado do Pará Barcarena PA Brasil Departamento de Biologia Universidade do Estado do Maranh&atilde o S&atilde o Luís MA Brasil Laboratório de Síntese Organica Universidade Federal do Pará Belém PA Brasil

Artemisinins tested against W-2 strains of malaria falciparum are investigated with molecular electrostatic potential (MEP), in an attempt to identify key features of the compounds that are necessary for their activities, as well as to investigate likely interactions with the receptor in a biological process and to use that information to propose new molecules. In order to discover the best geometry involving the ligand-receptor complexes (heme) studied and help in the proposition of the new derivatives, molecular simulations of interactions between the most negative charged region around the peroxide and heme locates (the ones around the Fe2+ ion) were carried out. In addition, PCA (principal components analysis), HCA (hierarchical cluster analysis), SDA (stepwise discriminant analysis), and KNN (K-nearest neighbor) multivariate models were employed to investigate which descriptors are responsible for the classification between the higher and lower antimalarial activity of the compounds, and also this information was used to propose new potentially active molecules. The information accumulated in studies of MEP, molecular docking, and multivariate analysis supported the proposal of new structures with potential antimalarial activities. The multivariate models constructed were applied to the new structures and indicated numbers 19 and 20 as the most prominent for syntheses and biological assays.

关键词： Artemisinins Antimalarial Potential Molecular Electrostatic Potential Ligand-Heme Interaction Multivariate Models

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通泰方言的小称变调残迹

语言科学 2015年第4期14卷 394-404页

作者：倪志佳北京大学中文系北京100871

通泰方言中存在着一种特殊的词末变调现象,即部分多音节词的末字不论其单字调为何一律读作同上声一样的调值。文章首先以如皋(桃园)话为例对这一现象进行共时描写,然后考察它的地理分布状况,最后讨论其性质,认为词末变调是通泰方言早期... 详细信息

通泰方言中存在着一种特殊的词末变调现象,即部分多音节词的末字不论其单字调为何一律读作同上声一样的调值。文章首先以如皋(桃园)话为例对这一现象进行共时描写,然后考察它的地理分布状况,最后讨论其性质,认为词末变调是通泰方言早期小称变调的残迹,并指出它形成的基础不是现在的儿尾,而是历史上的鼻音儿尾。

关键词：通泰方言词末变调小称变调

Grain Yield Differences of Soybean Cultivars Due to Solar Radiation Interception

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American Journal of Plant Sciences 2017年第11期8卷 2795-2810页

作者： Mariele Müller Miroslava Rakocevic Andréia Caverzan Geraldo Chavarria Faculty of Agronomy and Veterinary Medicine Agronomy Post-Graduate Program University of Passo Fundo Passo Fundo Brazil Embrapa Agriculture Informatics Campinas Brazil

Soybean [Glycine max (L.) Merr.] growth rate and grain yield are modified by the interception and solar radiation use efficiency. Thus, it is desirable that the most of plant photosynthetic structures intercepting solar radiation in order to have increment in carbon fixation and reflection on growth and yield. The goal of this study was to assess if soybean cultivars differ in grain yield in relation to solar radiation interception. Four soybean cultivars were evaluated at stages V6, V9, R2, R4, R6 and R8. To determine the photosynthetically active radiation interception by the canopy, the plants were divided into two parts (upper and lower strata). For grain yield components, the plants were divided into three parts (upper, middle and lower thirds). Of the photosynthetically active radiation intercepted by the vegetative canopy at the reproductive stages, the maximum observed intercept was 5.2% in the lower stratum of the plants. The number of infertile nodes increased in the lower third of plants due to low interception of solar radiation in this plant region. Thus, the soybean cultivars more efficient in intercepting photosynthetically active radiation inside the vegetative canopy showed higher grain yields.

关键词： Glycine Max Leaf Area Index Efficiency of Solar Radiation Interception Extinction Coefficient Solar Radiation Use Efficiency

MULTIPLE SOLUTioNS FOR AN INHOMOGENEOUS SEMILINEAR ELLIPTIC EQUATioN IN R^N

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Acta Mathematica Scientia 2003年第1期23卷 1-15页

作者：邓引斌李亦赵学进 Department of Mathematics Huazhong Normal University Wuhan 430079 China Department of Mathematics University of Iowa Iowa City IA 52242 USA

In this paper, the authors study the existence and nonexistence of multiple positive solutions for problem(*)μwhere h ∈ H-1(RN), N ≥ 3, |f(x,u)| ≤ C1up-1 + C2u with C1 > 0, C2∈ [0,1) being some constants and 2 ions on f and h, they prove that there exists a positive constant μ* ion uμ if μ,∈ (0,μ*), there are no solutions for (*)μ if μ, > μ* and uμ is increasing with respect to μ∈ (0,μ*); furthermore, problem (*)μ has at least two positive solution for μ ∈ (0,μ*) and a unique positive solution for μ, =μ* if p ≤2N/N-2.

关键词： Multiple solutions variational method elliptic equations

Correlation of zeros of automorphic L-functions

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Science China Mathematics 2008年第7期51卷 1147-1166页

作者： LIU JianYa1 & YE YangBo1,2 1 School of Mathematics,Shandong University,Jinan 250100, China 2Department of Mathematics,The University of iowa,iowa City,ia 52242-1419,USA School of Mathematics Shandong University Jinan China Department of Mathematics The University of Iowa Iowa City USA

We compute the n-level correlation of normalized nontrivial zeros of a product of L-functions:L(s,π1)···L(s,πk), where πj, j=1,...,k, are automorphic cuspidal representations of GLmj(QA). Here the sizes of the groups GLmj(QA) are not necessarily the same. When these L(s,πj) are distinct, we prove that their nontrivial zeros are uncorrelated, as predicted by random matrix theory and verified numerically. When L(s,πj) are not necessarily distinct, our results will lead to a proof that the n-level correlation of normalized nontrivial zeros of the product L-function follows the superposition of Gaussian Unitary Ensemble (GUE) models of individual L-functions and products of lower rank GUEs. The results are unconditional when m1,...,mk 4,but are under Hypothesis H in other cases.

关键词： automorphic L-function zero correlation Selberg’s orthogonality conjecture

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共同体的建构:雾霾传播的公共利益导向

宁夏社会科学 2018年第3期 94-99页

作者：贾广惠江苏师范大学传媒与影视学院江苏徐州221009

雾霾频发侵扰社会生活,大众传播将此设置为常规议题反映。与传统媒体不同,网友对雾霾问题致力于解构,通过各种娱乐、讽刺手段颠覆主流话语,然而理性的、积极建构公共利益的引导与行动缺乏有效凝聚。基于网友的雾霾议题消极表现进行揭示... 详细信息

雾霾频发侵扰社会生活,大众传播将此设置为常规议题反映。与传统媒体不同,网友对雾霾问题致力于解构,通过各种娱乐、讽刺手段颠覆主流话语,然而理性的、积极建构公共利益的引导与行动缺乏有效凝聚。基于网友的雾霾议题消极表现进行揭示,将雾霾议题导引至公共利益的自觉认同与维护的路径,以促进公民社会的良性成长。

关键词：共同体雾霾传播建构公共利益

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爆振加固法中的水力劈裂及作用范围研究

岩土工程学报 2018年第S2期40卷 53-57页

作者：林澍闫澍旺贾沼霖天津大学水利工程仿真与安全国家重点实验室天津大学建筑工程学院华电重工股份有限公司博士后科研工作站

爆振加固法是一种高效、经济的地基加固方式,其炸药量的选择和药包布置间距的确定对爆振加固的作用效果起决定作用。由于现有的爆振加固计算方法较为繁琐,根据经典爆炸理论、Mohr-Coulomb准则和土体强度参数,从水力劈裂角度提出更便于... 详细信息

爆振加固法是一种高效、经济的地基加固方式,其炸药量的选择和药包布置间距的确定对爆振加固的作用效果起决定作用。由于现有的爆振加固计算方法较为繁琐,根据经典爆炸理论、Mohr-Coulomb准则和土体强度参数,从水力劈裂角度提出更便于工程应用的爆振作用范围确定方法,研究了炸药量和土体参数对爆振作用范围的影响,并与试验结果进行了对比,两者对应较好。研究结果表明,在炸药量一定的情况下,药包埋置深度h越大,则土体围压作用越大,爆振作用范围越小;土体强度参数c、φ越大,则土体强度越高,爆振作用范围越小。最后,对爆振加固方法在使用过程中的药量选择及药包布置间距的确定给出了一定的工程建议。

关键词：地基加固爆振水力劈裂作用范围