优秀少年艺术体操选手体能训练有效手段的实验研究

通过理论分析以及对5名艺术体操个人项目优秀少年选手历时9个月的训练实验研究，表明少年艺术体操选手在竞技提高阶段，体能训练的重要任务在于提高机体承受大负荷的训练能力，提高下肢弹跳爆发力、下肢力量耐力和1min30s持续工作的混合代谢能力。体能训练的有效手段为持续或间歇跑跳练习；模拟成套徒手练习；专用循环素质练习以及抗阻力提踵、半蹲立起、跳起4类体能训练手段。实验队员的体能水平得到明显提高，技能训练得到有力保证。     

La Medusa by Caravaggio: characterisation of the painting technique and evaluation of the state of conservation

The oil painting “La Medusa” executed by Caravaggio at the end of the XVI century on a wooden shield, was investigated by integrated physical–chemical and analytical methodologies in order to obtain scientific data capable of elucidating the state of conservation and the painting technique. Optical (OM) and electronic (SEM-EDS) microscopy, micro-FT-IR spectroscopy, gas chromatography–mass spectrometry (GC–MS) and pyrolysis GC–MS were applied on two microfragments and some organic samples obtained by solvent extraction using the swab cleaning technique. The obtained results indicated that Caravaggio probably reused an old shield as a previous gypsum preparation layer has been detected under the original painting layers. He used white lead, natural earths, verdigris and lead–tin yellow type I mixed with drying oils to paint. The considerable amount of amorphous particles of copper chlorides found in the green pigment verdigris suggests that it could have been produced according to the ancient recipe of verde salsum described by Theophilus. Mordant gilding has been identified on the upper part of the shield that can be related to an abandoned experiment to give the painting a mirror-like reflecting effect. Three different varnishes layers have been detected above the painted surface. The original and restoration varnishes have been identified and they contain a mixture of drying oil, mastic and turpentine and some beeswax. Cleaning tests, performed with different organic solvents, suggest the use of isopropyl alcohol as cleaning agent because it is less efficient in comparison to others solvents; thus it ensures a careful and controlled removal of the varnishes.     

李可染艺术成因探讨

独特的风格，可以以“黑”、“满”、“崛”、“涩”来概括其艺术内涵，无疑地，李可染为水墨世界开创出新的格局。李可染艺术的最大特点：不但精于勤，而且深于思。     

运用线描技法创作初探

以线造型、用线构成、线型气质是构成线描艺术的基本要素。以线造型是抛开光影色彩,抓住物象本质,直接刻画物象结构,并调动审美品质,主客观相结合,达到“得意”造型;用线构成是如何组织线条并使之完整地构成一幅作品,它包括两个方面:一是总体画面的章法构成;二是具体物象的线条构成;线型气质则是作品生动与否的主要因素,它同样包含两层意义:即线条所表现的形象气质和线条所体现的每个画家的艺术气质,二者不可分割。     

第36届世界体操锦标赛男子自由体操比赛评述

通过对第36届世界体操锦标赛男子自由体操半决赛及决赛进行统计分析,着重阐述了当前世界男子自由体操项目成套动作起评分、各动作组别的合理配置、完成动作的高质量要求以及当前男子自由体操技术发展的基本趋势等方面的问题。     

幂级数收敛半径的若干性质

给出了由已知幂级数生成新的幂级数后收敛半径发生变化的若干结果 ,并提供了相关实例     

五十年后识"真画"——黄宾虹山水画艺术的当代意义

黄宾虹是20世纪我国著名的山水画大家,他的山水画以明人为基,上窥宋元,取法百家,晚年变法,以浑厚华滋的画风成为中国当代山水画独特的笔墨范式,其卓越的人格风范与艺术成就,对本世纪中国画的继承与创新无疑具有重大的意义和深远的启迪。     

漫谈中国画的用线

线是中国画的主要表现方式,也是绘画最基本的语言;中国画的线是一种富于东方艺术特质的艺术表现形式;正确把握线与形的关系,合理组织线条,能够充分认识线这种独特的形式语言带来的更深层次的美感和无穷的艺术魅力。     

浅谈新潮美术的艺术追求

传统中国画受到新潮美术的影响,日益向多元化发展。从新写实画风、现代水墨试验和新文人画风三种风格可以看出新潮美术的艺术理想。作为现代主流的艺术,对真、善、美这一艺术理想的追求与传统艺术是一致的。