木质渔船简易稳性衡准

通过对辽宁省小型木质渔船典型船型进行了多方案的大倾角稳性计算,在此基础上,兼顾到国内外现有的木质渔船简易稳性衡准,给出了适用于辽宁省小型木质渔船的简易稳性衡准。     

奴隶社会时期中国木结构建筑的发展概况

从科学发展观的角度回顾了中国古代木结构建筑在奴隶社会时期的发展概况。     

人地关系视角下张家界土家村落石堰坪村保护和发展探讨

通过分析张家界石堰坪村的保护和发展的价值,针对该村落目前发展所面临的问题,坚持“强保护、弱开发”的发展理念,构建了以人为本、人地和谐的新型人地关系,并提出较具针对性的保护和发展对策。     

Carbon footprint including effect of carbon storage for selected wooden facade materials

Abstract

The outer facade constitutes a substantial volume of the total consumption of materials used in a building and the need for maintenance of the facade makes it especially interesting from a life cycle perspective. The range of wooden materials and products used for facades has different impacts over the life cycle, but the analyses so far have not included a time-adjusted global warming potential (GWP). Wooden facade materials were assessed with respect to their life cycle carbon footprint based on the environmental product declarations (EPD) and adjusted according to EN15804. The results showed low impacts of untreated Scots pine heartwood (≈1 kg CO₂-eq. per square meter [m²]), medium for thermally modified Scots pine, coated Norway spruce and oil/copper–organic preservative-treated Scots pine (1–5 kg CO₂-eq. per m²) and high for furfurylated Scots pine and acetylated Radiata pine (5–10 kg CO₂-eq. per m²). The results with time-adjustment showed that these methods have a potential large effect on the carbon footprint of wooden claddings. The inclusion of biogenic carbon flows and timing seems to be more important than the difference between the product when biogenic carbon is not included. This fact highlights the importance time-adjusted GWP would have for wood products EPDs.     

木质仿古地板机械加工技术研究现状与发展趋势

简述了木质仿古地板的类型和特征,介绍了国内外木质仿古地板表面成型加工技术的现状,以及数控加工技术在木质仿古地板加工中的应用,指出了木质仿古地板数控加工技术研究中需要解决的技术问题及发展趋势。     

应力波技术检测古建筑木构件残余弹性模量的初步研究

采用无损检测技术对古建筑木结构安全进行定量评价,对古建筑木结构维修和保护具有重要的现实意义。采用应力波测定仪FAKOPP对塔尔寺大金瓦殿的脊檩、檩、梁、承椽檩、房椽等五种木构件的动弹性模量进行了测定,结果表明:应力波无损检测可以有效的测定残余木构件的力学强度,不同种类木构件弹性模量保持率与其承重作用大小相关。     

秦陵铜车马木车马构件的标准化初考

介绍了对秦陵铜车马木车马构件的考证结果，在此基础上探讨了秦代产品的标准化、产品规格的系列化，以及在设计、工艺、管理等方面的标准化问题．首次提出了秦代应用优先数系的论点。     

Accumulation of lipofuscin in broiler chicken with wooden breast

Lipofuscin is one of the indicators of oxidative stress. To elucidate the role of oxidative stress in the development of wooden breast, this study investigates lipofuscin accumulation in various parts of wooden breast muscles. Sampling was performed using 46-day-old broiler chickens housed at a commercial Japanese poultry slaughterhouse. Fourteen wooden breast fillets and 13 normal breast fillets were collected in the deboning line. The samples used to measure shear force, 2-thiobarbituric acid reactive substance (TBARS), and for histological analysis were taken from the six portions of breast muscle fillets. In muscles affected by wooden breast, vacuolated muscle fibers were observed, and connective tissues appearing like perimysium were expanded with fibrosis. TBARS value and accumulation of lipofuscin were significantly higher in the wooden breast than in the normal breasts. A lot of lipofuscin granules were localized in the cytoplasm of collapsed muscle fibers of the wooden breast. The cranial portion of the wooden breast showed the highest shear force. The cranial position had a large amount of connective tissue and lipofuscin granules. The results of the present study strongly suggest that high oxidative stress, especially with a significant accumulation of lipofuscin, is associated with the development of wooden breasts.     

数字人文“二手证据”循证范式研究：以敦煌汉简为例

[目的/意义]随着数字人文研究范式的兴起,为研究者基于二手资源开展循证研究提供了契机。[方法/过程]本文首先梳理了数字人文“二手证据”循证范式相关的理论基础,并以敦煌汉简为例对数字人文“二手证据”循证范式进行了实证分析。通过来自CNKI的287篇敦煌汉简相关研究文献的编码分析,检验了信度和效度,并对类目体系展开了综合分析。[结果/结论]本文提出了循证数字人文基于“二手证据”展开循证研究的包括文献检索、类目编制、“二手证据”要素的综合分析3个阶段,以及证据检索、信度检验环节、效度检验环节和类目构建、证据要素综合5个环节构成的“三阶段五环节”范式。本研究所构建的范式,对循证数字人文学科、学术和话语体系建设具有一定的理论参照和实践指引价值。     

美式木制柜类家具的基本结构(Ⅰ)

结合图片和实样,对美式木制柜类家具的用材、设计、结构进行了探讨,主要分析了柜类家具的面板、顶板、旁板、背板、框架(包括前框、层框、后框)、抽屉及门的结构.