简介:摘要:勃拉姆斯对古典时期的音乐有很大的兴趣,后又跟随同样崇尚古典主义的马克森学习音乐理论,使得勃拉姆斯的作品继承了古典主义大师巴赫、莫扎特、贝多芬的传统表达手法,加上后期跟随舒曼学习,使他的乐思更加开阔,对位法、和声、节奏等方面都得到完美表达。
简介:摘 要:舒伯特是十九世纪奥地利最伟大的作曲家之一。[1]《即兴曲》也是舒伯特创立的新体裁,①是一种钢琴新形势的开始。本文通过对舒伯特作品op90.no4分析,可以充分了解舒伯特即兴曲op90.No4的艺术特征与演奏分析。本文采用收集资料法、举例说明法来分析该作品。
简介:[摘要] 狂想曲Op.79 No.1是勃拉姆斯作品晚期的钢琴小品,同时也是他在1862后停笔钢琴作品数年之后的钢琴独奏作品,这个钢琴作品的问世可以算是一个积蓄了数年精华后的集大成的之作,该作品中古典主义的形体构成和浪漫主义的音乐内容相结合,突出的体现了勃拉姆斯音乐作品中古典主义和浪漫主义相互交织的新风格艺术特点。
简介:摘要:费利克斯·门德尔松,是德国犹太裔作曲家,《随想回旋曲》是他童年创作的一首钢琴曲,也是他早期音乐创作中的代表作之一,他在创作上将古典主义的传统与浪漫主义的诗意在他作品中完美的结合,赋予作品以一种诗意的唯美。
简介:AbstractBackground:Models to predict mortality in trauma play an important role in outcome prediction and severity adjustment, which informs trauma quality assessment and research. Hospitals in China typically use the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) to describe injury. However, there is no suitable prediction model for China. This study attempts to develop a new mortality prediction model based on the ICD-10-CM lexicon and a Chinese database.Methods:This retrospective study extracted the data of all trauma patients admitted to the Beijing Red Cross Emergency Center, from January 2012 to July 2018 (n = 40,205). We used relevant predictive variables to establish a prediction model following logistic regression analysis. The performance of the model was assessed based on discrimination and calibration. The bootstrapping method was used for internal validation and adjustment of model performance.Results:Sex, age, new region-severity codes, comorbidities, traumatic shock, and coma were finally included in the new model as key predictors of mortality. Among them, coma and traumatic shock had the highest scores in the model. The discrimination and calibration of this model were significant, and the internal validation performance was good. The values of the area under the curve and Brier score for the new model were 0.9640 and 0.0177, respectively; after adjustment of the bootstrapping method, they were 0.9630 and 0.0178, respectively.Conclusions:The new model (China Mortality Prediction Model in Trauma based on the ICD-10-CM lexicon) showed great discrimination and calibration, and performed well in internal validation; it should be further verified externally.
简介:摘要目的探讨黏蛋白痣的临床病理特征。方法回顾性分析2014年1月至2019年12月在中国医学科学院皮肤病医院经临床及组织病理确诊的10例黏蛋白痣患者的临床和病理资料。结果10例黏蛋白痣均为儿童期发病,平均发病年龄6.5岁。7例皮损位于躯干,其中4例位于背部;2例位于四肢,1例躯干、四肢泛发。皮损在局部排列成线状、带状或簇集状,质地柔软至坚硬不等,颜色呈肤色、淡红色和黄色。组织病理检查:10例均表现为真皮内胶原纤维束排列紊乱,其间可见程度不等的黏蛋白沉积,沉积的位置和程度不一,6例在沉积区见胶原纤维增粗、红染,其余4例表现为胶原稀疏、减少;2例出现基底层灶状液化变性,3例出现真皮内不等量成熟脂肪组织等。结论黏蛋白痣的病理主要表现为真皮内程度不等的黏蛋白沉积于杂乱的胶原束间,可与一些其他疾病类似,容易误诊,临床和病理紧密联系可确诊。