铝阳极氧化膜孔内电沉积银及其抗菌性能

Aluminum specimens were anodized in a sulfuric acid bath, then silver was electrodeposited in pores of the anodized aluminum by using alternating current . The anodized aluminum with deposited silver was testedfor its antibacterial performance. The results show that the antibacterial rates of the specimens are above 95% against the growth of E. coil, P. aeruginasa, S. faecalis and S. aurens. The morphology of the silver in pores of anodized aluminum is characterized by transmission electron microscopy, and the micrographs indicate that silver is assembled in the form of nanowires with a diameter of 10 nm or 25 nm. The nanowires have a structure of parallel bright stripes alternating with parallel dark stripes.     

抗菌功能性铝基材料的制备及表征

通过交流电沉积的方法在铝阳极氧化膜的孔内沉积金属铜,制备了铝基抗菌功能性材料;测试了沉积铜的铝阳极氧化膜的抗菌性能.结果表明:电沉积铜的铝阳极氧化膜对大肠杆菌、绿脓杆菌、粪链球菌和金黄色葡萄球菌的抗菌率均大于95%.透射电子显微镜表征了铜在氧化膜孔内的沉积形貌,铜在铝阳极氧化膜孔内呈连续的线状形貌,直径为25 nm.     

激波稳定风量的新型高炉风口理论与实验研究

通过气体力学理论的研究与分析,设计了一种新型的高炉风口;实验结果表明,该风口能利用激波自动调节并抵制炉内压力的波动,实现稳定供风,稳定高炉的操作。该种高炉风口将成为炼铁行业高炉风口更新换代的新设备。     

水玻璃中的二氧化硅分光光度法测定

研究了乙醇作为稳定剂对硅钼及蓝铬合物生成的稳定性影响，以及温度，酸度等其它适宜条件，建立了水玻璃中二氧化硅含量工作曲线。     

初烤烟叶提取物中酸味关键成分的感官导向分析

为考察烟叶的酸味关键成分,利用凝胶渗透色谱(GPC)分离初烤烟叶的提取物,根据各流份滋味特征评价结果,合并酸味流份,得初烤烟叶提取物的酸味特征组分;建立酸味特征组分中乳酸、乙酰丙酸、苹果酸、富马酸、柠檬酸等5 种有机酸的离子色谱(IC)定量方法;依据定量结果,复配上述5 种有机酸的混合溶液,分别对酸味特征组分溶液和有机酸复配溶液进行滋味稀释分析(TDA);利用三点选配法(3-AFC)测定上述5 种有机酸在水中的味觉阈值,结合其在酸味特征组分中的质量分数,计算各有机酸的滋味活性值(TAV)。结果表明:①酸味特征组分溶液和有机酸复配溶液在TDA实验中表现出一致的最大稀释倍数,证明所考察的5 种有机酸是酸味特征组分中酸味的主要来源。②根据5 种有机酸的TAV推测其对酸味的贡献排序为苹果酸> 乳酸> 乙酰丙酸> 柠檬酸> 富马酸。      

多孔阳极氧化铝模板组装Fe纳米线及其表征

Fe nanowire arrays are prepared by electrodeposition in porous anodic aluminum oxide template from a composite electrolyte solution. These nanowires have an uniform diameter of approximate 25 nm and a length in excess of 2.5μm.The micrographs and crystal structures of Fe nanowlres are studied by transmission electron microscopy (TEM), selected-area electron diffraction (SAED), and X-ray diffraction(XRD). It is found that each nanowire is essentially a single crystal and has a different orientation in each array. Hysteresis loops of Fe nanowire array show that its easy magnetization direction is perpendicular to the sample plane.     

铝阳极氧化膜模板组装铜纳米线及其TEM表征

为了研究纳米线的微观结构，通过电化学交流电沉积的方法，以多孔阳极氧化铝膜（Al2O3/Al)为模板，制备了金属铜纳米线，利用透射电子显微及选区电子衍射技术对纳米线进行了表征，并从电化学角度探讨了铜纳米线凸凹相间条纹结构的形成机理，研究表明：铜纳米线具有凸凹的条纹结构，平均长度约为4μm，直径20nm；铜纳米线具有面心立方（FCC）的多晶结构，其凸、凹部位具有相同的物相组成。     

Antibacterial Surface Treatment of Aluminum Materials

Aluminum specimens were anodized in a sulfuric acid bath, then silver was electrodeposited in pores of the anodized aluminum by using alternating current . The anodized aluminum with deposited silver was tested for its antibacterial performance. The results show that the antibacterial rates of the specimens are above 95% against the growth of E. coli, P. aeruginasa, S. faecalis and S. aureus. The morphology of the silver in pores of anodized aluminum is characterized by transmission electron microscopy, and the micrographs indicate that silver is assembled in the form of nanowires with a diameter of 10 nm or 25 nm. The nanowires have a structure of parallel bright stripes alternating with parallel dark stripes.     

烟草样品等温吸湿模型的比较与分析

为了筛选出适合不同烟草样品的等温吸湿模型,从食品等温吸湿研究领域的众多模型中选择了14种常用的数学模型,包括理论模型8种:BET模型、GAB模型、Kühn模型、Smith模型1（非溶胀材料）、Smith模型2（溶胀材料）、Harkins模型、Hailwood模型和Lewicki模型,经验/半经验模型6种:Peleg模型、Ferro Fontan模型、DLP模型、Konstance模型、Oswin模型和Polynomial模型,对12个不同类型烟草样品的实验数据进行拟合,通过决定系数（R2）和平均相对误差（MRE）对模型的拟合效果进行了评价,并用18个不同类型的烟草样品对优选模型进行了验证。结果表明,GAB和DLP模型具有较好的普遍适用性,可分别作为烟草样品等温吸湿研究领域的理论模型和经验/半经验模型进行推广应用。      

多层纳米线的研究进展

介绍了多层纳米线的研究现状、制备技术、表征方法、性能测试及其应用,其中重点介绍了模板-电沉积法,并给出了由该法制备的多孔阳极氧化铝(AAO)模板、金属纳米线(阵列)、多层纳米线的SEM、TEM及其电子衍射照片,叙述了它们在量子磁盘、微弱磁场探测、微传感器、微发动机等方面的应用,并展望了多层纳米线的发展前景。