剪纸艺术在河东民居中装饰及应用

民间剪纸艺术在我国源远流长。在新的历史条件下,民间剪纸艺术进入河东民居,成为室内装饰设计中的重要文化元素之一。剪纸通过顶棚花、窗花、墙花、门笺的表现,以中国红、镂空等多种艺术形式应用在室内设计中,创造出具有个性的色彩表现和有品位的家居空间。室内装饰朝民族化的方向发展是研究设计永恒的课题。     

加强避暑山庄山区植被的抚育改造

笔者介绍了避暑山庄山区的自然概况及山区植被的现状,山区人工林采伐木的选择,需要更新改造的地段及更新改造的方案.     

刀具结构创新是实现高效加工的有效途径之一

刀具结构创新是提高切削效率,实现高效加工的有效手段之一。以切削变形和切削摩擦两个基本问题为出发点,对刀具几何结构进行创新改造,使第Ⅲ变形区中材料的延展变形实现向着低应力区域的多维塑性流动。对外圆车削试件的已加工表面和对刀具检测表明,创新刀具能够有效地降低工件表面粗糙度,提高尺寸精度,使已加工表面层中保持残余压应力;减轻刀具的磨损,提高刀具耐用度。     

基于PressCAD的FOX面板冲孔模设计

文章简要概述了国内冲压模具设计行业的现状,阐述了模具凸、凹模刃口尺寸确定的新方法,并以FOX面板冲孔模设计为例,介绍了基于PressCAD冲孔模设计的方法、步骤。同时对PressCAD的模具资料设定、模板绘制、模具组立图、模板分离等命令的功能和参数设置方法作了深入探讨.     

浅释中国画钤印艺术的文化起源与文化特征

本文简要概述了印章在我国的起源和演进过程;结合中国画钤印艺术的形成和发展历史的知识,系统介绍和论述中国画钤印艺术的文化特征和运用美学,深入感受具有传统文化内涵的中国画钤印艺术。     

琳琅满目,有文有野——读《龙开朗书法篆刻艺术选集》

龙开朗先生善书善刻 ,作品琳琅满目 ,有文有野。书法作品讲究“味”、“情”、“气” ,篆刻作品既有秦风汉韵 ,又有个性。这是他感悟人生和书道的结果     

模具型腔粗加工进给速度优化研究

针对模具型腔粗加工的特点,提出了二维当量载荷的概念,构建了模具型腔层切加工的切削力曲面模型,并对建立的切削力曲面模型进行进给速度优化。实验证明,该进给速度优化策略对提高模具型腔加工效率十分有效。     

Urine specific gravity as an indicator of dehydration in Olympic combat sport athletes; considerations for research and practice

Urine specific gravity (U_SG) is the most commonly reported biochemical marker used in research and applied settings to detect fluid deficits in athletes, including those participating in combat sports. Despite the popularity of its use, there has been a growing debate regarding the diagnostic accuracy and the applicability of U_SG in characterizing whole-body fluid status and fluctuations. Moreover, recent investigations report universally high prevalence of hypohydration (～90%) via U_SG assessment in combat sport athletes, often in spite of stable body-mass. Given the widespread use in both research and practice, and its use in a regulatory sense as a ‘hydration test’ in combat sports as a means to detect dehydration at the time of weigh-in; understanding the limitations and applicability of U_SG assessment is of paramount importance. Inconsistencies in findings of U_SG readings, possibly as a consequence of diverse methodological research approaches and/or overlooked confounding factors, preclude a conclusive position stand within current combat sports research and practice. Thus the primary aim of this paper is to critically review the literature regarding U_SG assessment of hydration status in combat sports research and practice. When taken on balance, the existing literature suggests: the use of laboratory derived benchmarks in applied settings, inconsistent sampling methodologies, the incomplete picture of how various confounding factors affect end-point readings, and the still poorly understood potential of renal adaptation to dehydration in combat athletes; make the utility of hydration assessment via U_SG measurement quite problematic, particularly when diet and training is not controlled.     

汽轮机隔板围带激光切割研究

笔者针对汽轮机隔板的典型零件-"围带"的型孔激光切割加工进行了研究。根据生产的实际要求,结合理论研究,通过系列的试验和对比分析,优化工艺方法,实现了公司技术能力的提升。文章重点在于参数优化和生产运用。     

提高全自动圆材校直切断机送料精度的方法

主要论述了从德国引进的全自动圆材校直切断机送料系统精度存在的不足以及提高送料精度的方法,结果表明：送料机构改进后使滑块位移误差减小,送料精度由0．10mm-0．31mm提高到0．07mm-0．115mm,并能够稳定精度。