竹材丙酮法木质素高效分离技术研究

在一定的温度、压力条件下,利用丙酮提取竹材中的木质素,丙酮通过蒸馏回收后,可以反复利用;而通过蒸馏,得到的高纯度的木质素是重要的化工原料,整个过程形成一个封闭循环系统,基本上无三废排放;研究结果表明:当丙酮浓度为80%,液固比为10∶1,在最高反应温度160℃下保温3h,降解木质素的效果最佳;为解决制浆造纸行业废水对环境的污染问题提出了一条新的途径。     

高纯竹叶碳苷黄酮复合纳米生物材料的制备及其结构表征（急）

采用离子交联法，以高纯竹叶碳苷黄酮制剂（碳苷总质量分数﹥90%，记为H-BLF）和芫根阴离子多糖（TP）为原料，通过ε-聚赖氨酸（ε-PL）的阳离子桥键合而成竹叶碳苷黄酮纳米混悬液（H-BLFnd），进一步在混悬液中添加8%（w/v）的γ-环糊精、经真空冷冻干燥得到纳米冻干粉（H-BLFnp），采用粒径分析、TEM、UV、FTIR、TG和DSC对其外观、性能、结构进行表征。结果表明： H-BLFnp外观为白色粉状，表面光洁平整，色泽均匀，平均粒径为（679±10.2）nm，分散系数为（0.349±0.004），包埋率为（92.39±0.34）%。     

积件在高职专业教学资源库建设中的应用

从高职教育特点及高职人才培养要求出发,探讨了现代教育技术中的积件思想在高职专业教学资源建设中的应用,提出了基于积件思想的高职专业教学资源的系统构建及功能实现的途径。     

VMware服务器虚拟架构解决数据安全问题

中心机房的传统架构模式已不满足现代计算机的应用和需求,且数据安全得不到保证,数据恢复代价高、恢复困难。本文提出了用VMware虚拟架构解决网络机房的数据安全问题,简化服务器的部署、管理和维护工作,提高了数据中心的安全性和容错能力。     

玄武岩生料乳浊釉的研究

分析了玄武岩的矿物组成、化学组成及烧成性能,对长石、滑石、硼砂对玄武岩釉料的影响进行了实验,确定适于卫生陶瓷生料釉的配方。     

Tensile properties,morphology, and thermal behavior of PVC composites containing pine flour and bamboo flour

Composites of unplasticized poly(vinyl chloride) (PVC) blended with bamboo flour and pine flour, respectively, were prepared in a batch mixer followed by compression molding. The effects of wood flour fillers on the morphology, static mechanical properties, and thermal properties of the composites were investigated. Compared with neat PVC resin, the introduction of both bamboo flour and pine flour significantly improved the stiffness of the composites, while decreasing the tensile strength to some extent. Tensile tests showed that pine flour–filled composites exhibited better mechanical properties than those filled with bamboo flour with the same particle size at the same loading level. Scanning electron microscopic examination revealed good dispersion and alignment tendency of short pine fiber within the composites at a lower loading level. Moreover, experimental results indicated that both bamboo flour and pine flour additions showed no obviously adverse effect on the thermal stabilities of these composites. Based on the comprehensive properties, these composites meet the need of woodlike material for use as wood structures. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 1804–1811, 2004     

贴身穿竹毛混纺针织物开发及性能测试

采用80S丝光羊毛纤维和3D毛型竹浆纤维混纺纱,混纺比例竹浆/丝光羊毛分别为30/70、50/50、70/30,进行针织物开发及舒适性探究。通过对混纺纱的强力、伸长率、耐磨性及毛羽进行测试,得出:实验结果均满足上机织造标准。以纬平针组织为例,织造出三种混纺比针织物,并对其透气性、透湿性和热导率进行了测试分析,实验结果表明:织物透气性、热导率随丝光羊毛含量的增加而降低,透湿量随之增加。     

竹纤维混凝土结构加固方法的分析

混凝土加固技术作为新兴技术之一,在实际工程中得到广泛应用,取得良好的效果与广泛的应用场合。本文在结合现有几种混凝土加固技术的前提下,着重介绍了竹纤维混凝土的基本情况与力学性能,并对这一材料的发展状况和应用前景作出讨论。举例论证了竹纤维混凝土在实际运用中的优势,为未来该材料进一步的发展提供理论基础和分析。     

一类总量依赖型竹林发展系统的古典解

针对竹林发展系统边界不满足通常的三类条件的问题,采用在"竹龄-直径"存在区域内引进一类特殊的曲线族的方法,以避开边界条件问题;通过对竹子直径尺度量纲的适当选择,提出了一类总量依赖型二维竹林发展系统模型,并综合作特征线、先验估计、构造初始状态积分方程、迭代等手段证明了该系统整体古典解的存在唯一性。     

TiO2-SnO2 coated bamboo biochar for electrochemical treatment of coking wastewater

A new type of bamboo biochar (BC) loaded TiO₂-SnO₂ particle electrode was prepared and characterized by SEM, FT-IR, BET and XRD for efficient treatment of the coking wastewater in a three-dimensional electrochemical reaction system(3DERs). The results showed that bamboo biochar had a dense microporous space structure, and a significant amount of Ti-Sn oxides existed on the surface and in the interior of the BC. The removal rates of COD and DOC in coking wastewater reached to 73.96% and 66.72% respectively, and UV₂₅₄ reduced from 6.65 cm^-1 to 3.00 cm^-1 by the electrolysis treatment of 150 min at the current density of 30 mA/cm². The three-dimensional fluorescence spectra indicated that the most of the soluble organic compounds and soluble microbial by-products were degraded and transformed. The addition of Ti and Sn enhanced the efficacy of the electrooxidation, electro-adsorption and electrocatalytic behavior of the BC particle electrodes, which improved the treatment effect on coking wastewater in the 3DERs. In addition, this study provides the possibility of basic research for the engineering practice of electrochemical oxidation treatment of coking wastewater.