sapwood相关论文
Movement of boron from ulexite and colemanite minerals in sapwood and heartwood of Cryptomeria japon
This study evaluated boron diffusion from raw boron minerals ulexite and colemanite with low water solubility in compari......
Measurement of the longitudinal gas permeability was made for air-dried sapwood specimens from Masson pine(Pinus massoni......
为了研究醋酸水溶液处理给杉树材重量带来的变化,使用醋酸水溶液对杉树材进行了处理.结果发现处理后杉树材重量的减小量大约等于抽......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
We evaluated heartwood, sapwood and bark content in teak trees.A total of 27 sample plots were laid out in teak plantati......
以美国花旗松心材与边材为研究对象。分析比较它们的化学组成、结构和纤维性质的差异。结果表明：美国花旗松心材的热水抽提物、冷水......
对杉木、马尾松各5株生材进行了不同体积分数的酒精、丙酮和戊烷溶剂逐级过渡置换及气干,并通过水上升置换法对溶剂置换材和气干材......
以东北东部山区温带森林的7个主要组成树种——红松、兴安落叶松、春榆、水曲柳、胡桃楸、黄菠萝和蒙古栎为研究对象,比较分析各树......
探究2种常见杨树三脉青杨（Populus trinervis）、康定杨（Populus kangdingensis）的心材、边材的化学成分,观察心边材主要化学成分差异,......
以过热蒸汽作为介质于185℃～215℃热改性7种国产阔叶材,分析窿缘桉、马占相思、荔枝木、刺槐、春榆、臭椿、橡胶木等木材热改性后心......
芳香植物日本花柏天然耐久,富含精油。日本花柏心材和边材的精油组分气相色谱-质谱分析结果表明其心材与边材精油组分均主要由醇类......
对不同树龄和径向位置黑木相思木材的物理和主要力学性质测定研究表明：黑木相思株内边材、心材密度和主要力学性质随着树龄的增大而......
Movement of boron from ulexite and colemanite minerals in sapwood and heartwood of Cryptomeria japon
This study evaluated boron diff usion from raw boron minerals ulexite and colemanite with low water solubility in compar......
High-elevation,snow-dependent,semiarid ecosystems across southwestern United States are expected to be vulnerable to cli......
Sap-flow measurement and scale transferring from sample trees to entire forest stand of Populus euph
Understanding how the transpiration of this vegetation type responds to environmental stress is important for determinin......
