木材水运工程选址的多目标灰色局势决策

论述灰色局势决策方法的基本原理及其在木材水运工程选址中的应用 ,应用该方法进行工程选址 ,可以克服传统方法的局限性 ,使结果更加科学合理     

金沙江木材流送工艺改革的探讨

从１９７１年开始，进行金沙江单漂流送木材，由于该工艺存在着作业时间长，木材损失大等缺点，有必要进行工艺改革，随着广大铁路、南昆铁路的建设，给工艺改革创造了良机。其内容是：金沙江木材流送分两段进行；龙蟠以上７２０ｋｍ江道为上段，进行中洪水位单漂流送，在龙蟠出河，汽运大理中转，三江口到格里坪３８０ｋｍ江道为下段，仍采用现行工艺。本文对该改革的可行性，优点进行了论证。     

Looking at computer-visualized interior wood: A qualitative assessment using focus groups

The objective of this study was to explore and gather human reactions and perceptions on computer visualizations of interior wood. The subjective qualities of such products are important because they infl uence the most critical of consumer decisions: to buy or not. To learn more about a phenomenon than quantitative data can provide, qualitative methods are needed. Here, grounded theory was used with focus groups to form a map of 14 people’s experiences of wood. Six computer-generated pictures with visible wood were varied into 18 pictures, such that two-by-two comparison resulted in 3500 words. These were combined into a map that was generated earlier, which had found 2000 words. The main dimensions found were light, color, unity, and authenticity. Light is more than brightness; shadows and lighting seemed more important for the wood feeling, and color and contrast gave life and warmth to the material on the screen. Respondents wanted wood that was more “woody” and “warmer” than wood actually is, that is, a hyper-realistic picture. Perhaps smart modification rather than photorealism should be the goal. Distribution of the earlier found activity and harmony was important for most respondents. In addition, many subjects discussed the composition and/or the context or purpose of the pictures. The impact of wood is not just related to the wood itself; it is also intertwined with its surroundings.     

优良笋材两用竹种乌芽竹的初步研究

乌芽竹适应性广，山地、平原、水湿地、房前屋后均能生长，且发鞭发笋率高，经济效益显著。笋产量１５７４４ｋｇ／ｈｍ￣２，留养竹９６９０株／ｈｍ￣２，平均胸径３．５ｃｍ，净收入３１９６０．３２元／ｈｍ￣２·ａ￣（－１）。新造竹林成林快，投产早，２～３ａ即可成林，３～４ａ可产笋出售。     

抽提物对木材渗透性影响的研究

本文研究了我国东北四种常见木材的抽提物对渗透性影响的变化规律,测量了木材抽提前后渗透性的改变,应用电子显微镜观察了木材抽提后微观结构的变化,分析和探讨了未材抽提对渗透性影响的机理。结果表明,木材经过四种方法的抽提以后渗透性均有不同程度的提高。木材渗透性的提高与抽提时间成线性关系。抽提改善了木材内部流体流动的通路,提高木材渗透性的内在原因是除去了纹孔膜上的结壳物质。     

林蛙红腿病的诊断及病原的鉴定

针对龙井市林蛙养殖场中出现的后腿肌肉变成红色、肝肿大呈紫红色、肾脏充血呈鲜红色心肌缺血性坏死为主要症状的患病林蛙,进行了细菌分离培养、生化试验、毒力检测、人工感染、药物敏感度等试验研究,结果证明引起该病的病原菌为嗜水气单胞菌。药敏试验结果表明,该病原菌对链霉素,诺氟沙星、庆大霉素等高度敏感,而对红霉素、青霉素等不敏感。     

Mechanical properties of wood flour/recycled-thermoplastic-blends composites

Mechanical properties of wood flour/recycled-thermoplastic-blends composites     

用偏差活化能方法分析研究木材的干燥特性

偏差活化能可以表示被干燥物料的传质传热特性.通过理论分析和实验,该文研究了木材的不同几何尺寸与其偏差活化能的关系.基于木材的湿基试样之上,首先得到不同几何尺寸的木材的干燥率实验数据,然后建立模型计算扩散系数和偏差活化能.研究结果表明,不同几何尺寸木材试样的偏差活化能值随着环境温度和湿度而变化,并且影响着木材的传质传热动态特性;被干燥物料的偏差活化能在其几何尺寸较小时变化微小,并且随着尺寸的变小偏差活化能也下降;当干燥温度上升时,相对偏差活化能很快接近1,反之亦然.这些研究结果为进一步研究木材的动态干燥特性奠定了基础.     

六甲基磷酰三胺阻燃性的TG-DTG研究

用质量分数为10％的六甲基磷酰三胺溶液（80℃）处理杉木15min，TG－DTG研究表明，样品的热解峰温由410℃降到290℃，残余炭量由17．2％增加到48．2％．垂直以燃烧试验表明，处理后的杉木试样，火焰延续时间不超过20S．将试样用蒸馏水浸泡2d后，其阻燃效果无显著损失．