浅谈建筑工程防渗漏施工要点

随着建筑物形象新颖化、多样化以及建筑墙体材料的广泛推广应用,建筑外墙渗漏已成为一大顽疾,且渗漏一旦出现,一般无法正确判断渗漏点部位,极难处理,本文就建筑工程中有关地基与基础、主体结构中易发生渗漏的关键部位——地下室底板、外墙、地下室顶板等防治问题进行浅析。     

黄宾虹山水画的艺术特征

黄宾虹的山水画是我国传统山水画的集大成者,表面上看,画面蓬头垢面,但在纷乱复杂的画面后面,更多的是他向我们陈述了他的人生,传达他对绘画的观点,讲解老庄哲学的精髓。他的绘画向后来者传递了他的山水世界的众多的绘画符号。黄宾虹绘画的面貌是“黑团团中墨团团”,黑、密、厚、重,厚到透不过气来,密到透不进风去;其次,他用笔的千变万化,乱草一堆,但笔笔分明,每一笔都严格遵循着绘画的法度。     

突破电极反应式的书写

原电池反应或电解池反应的本质都是氧化还原反应,因此无论是原电池还是电解池的电极反应都要遵循氧化还原反应的规律,特别是得失电子总数与化合价降低或升高的总值相等。原电池反应或电解池反应本质上又都是离子反应,电极反应式通常情况下也是以类似离子方程式的形式出现,因此电极反应式也要遵循离子方程式的电荷守恒和原子守恒。灵活运用这些守恒规律就能突破高考难点中电极反应式的书写。     

后移动长城时期中国男篮中锋进攻能力研究

以第27届男篮亚锦赛中国男篮中锋和5个对手的中锋为研究对象,采用文献资料法、录像观察法、数理统计法,对后移动长城时期中国男篮中锋进攻能力进行研究。研究发现：本届中国男篮中锋身高、体重在亚洲篮坛依然拥有优势,老中青结合,年龄结构基本合理;投篮得分能力与对手相比拥有较大优势,不过2分球、罚球命中率和对手有一定差距。队内中生代、新生代中锋球员远投能力远弱于老队员,要提高远投得分能力;助攻和前场篮板球能力远强于对手中锋,队内新生代中锋助攻策应能力弱于老队员,前场篮板球拼抢能力已超越老队员;在减少失误方面和对手中锋有较大差距。     

Computational fluid dynamics (CFD) modeling of microclimate for salts crystallization control and artworks conservation

Many deterioration processes are linked to unsuitable microclimatic condition in cultural buildings. One of the most diffused processes is soluble salts crystallization that can be accelerated in masonry structures within specific microclimatic values for different chemical compounds. In this paper, microclimate and efflorescence diffusion were monitored over a one-year period in the Crypt of the Cathedral of Lecce (South Italy). This allowed to relate the microclimate with the efflorescence variation over time. A three-dimensional computational fluid dynamics (CFD) model was then developed to detail the thermo-hygrometric parameters and airflow patterns responsible for salts crystallization and artworks deterioration. Two main conditions were reproduced; one to simulate the current microclimate, which simulations showed to be inadequate for conservation, and the other to search for a more appropriate solution. In both cases, summer and winter conditions were simulated and compared to find a microclimate able to ensure more suitable thermo-hygrometric intervals required by the constituting artworks materials. The results helped to suggest actions to improve maintenance of the Crypt.     

Consolidation and protection by nanolime: Recent advances for the conservation of the graffiti,Carceri dello Steri Palermo and of the 18th century lunettes,SS. Giuda e Simone Cloister,Corniola (Empoli)

Nanolime dispersed in 2-propanol was extensively used for the consolidation of wall paintings. The knowledge of the advances of this methodology dealing with all the possible effects associated with the nanolime new material in conservation is fundamental to assess and improve the technique. In this paper, four different dispersions of Ca(OH)₂ nanoparticles were characterised by Small Angle X-rays Scattering technique (SAXS) and Transmission Electron Microscopy (TEM) in order to achieve information on size, shape, polydispersity, agglomeration, and crystal structure (by SAED patterns) of the particles. Once characterised, the dispersions were tested in two different case studies, the Carceri dello Steri in Palermo with their graffiti and the 18th century lunettes at the SS. Giuda e Simone Cloister, Corniola (Empoli) with their lime-based mural paintings. The treated samples were characterised in relationship to either their morphology and surface chemical composition by Scanning Electron Microscopy coupled with Energy Dispersive X-rays spectroscopy (SEM-EDX), or their water absorption and mechanical properties (resistance to material abrasion). The results obtained showed that all the dispersions were nanometrically structured and their application succeeded in recovering the mechanical properties of the painting or graffito layers, not altering their permeability to water and keeping perfectly the wall transpiration. However, the dispersions constituted of the nanoparticles obtained via a synthesis able to control size and shape of the Ca(OH)₂ particles resulted in a better performance in situ, even if the differences found by SAXS and TEM were slight.     

再论具象绘画

在东西方绘画发展的漫长历程中，具象绘画都一直扮演着重要的角色。具象绘画可以直接地反映世界的表现语言，再加上历史传统所特有的审美习惯，形成了多样性的风格流派，而且也在不断扩展它自身的表现形式和样式，为人们所欣赏。具象绘画若能既不失传统手段的优势，又能将理性及个性相统一而一展其独特的表现手法，那么，将会有更多的具有时代感的作品得到展现。     

试论油画风景写生语境中的意境

提出了传统文化精神是油画民族化在中国的根本的观点,同时阐明中国绘画的“意境“理论是中国传统文化的重要特征及代表,并进而论述了在油画风景写生语境中“意境”生成的意义及具体方式。     

浅谈CFD在暖通空调节能方面的应用

随着CFD商用软件的逐渐普及,计算流体力学广泛地应用于传热、传质、化学反应及其相关领域。本文对CFD技术作了简述,介绍了CFD在暖通空调中应用的现状,探讨了CFD在暖通空调节能方面的应用。     

关于优化推铅球左腿支撑技术结构的探讨

在田径运动中，推铅球是单手投掷的非周期性运动项目。推铅球时的技术方法与场地器械有其独特的特点，因而形成了独特的技术结构。推铅球同掷铁饼一样，都是在圆圈中投掷，左腿都有一个制动，支撑用力的动作，但是左腿用力是一个复杂的过程，而不仅仅是一个简单的动作形式，推铅球时，左腿在最后用力过程中，能否形成合球的支撑技术，对最后用力的效果影响极大。因此，本文就推铅球时如何优化运动技术结构，使之达到比较完善的效果，作一个初步探讨。