氧化铝陶瓷凝胶铸成型工艺的研究

对氧化铝陶瓷的凝胶铸成型工艺进行研究、研究低粘度、高固相体积分数悬浮体的制备及其固化过程．研究成型坯体干燥和成型剂脱除工艺．并通过凝胶铸成型工艺制备出形状复杂、致密的陶瓷部件。制成的AI2O3陶瓷部件组织结构均匀、尺寸精确,坯体体积密度不低于50vol％,坯体允许进行机械加工．干燥和脱除成型剂后坯体无变形开裂。     

现代视角下探析建构的诗学表达

以肯尼斯·弗兰姆普敦的《建构文化研究》一书为理论背景,从"建构"与"建造的诗学"两者关系思考建构的内在意义,提出"理论"与"反理论"、"建构"与"非建构"两对看似悖论的主题并进行探讨,以此剖析"建构"的诗学表达,激发设计者对现代建筑的重新思辨,以期促进建筑理论的良性发展.     

西部城市照明规划中的景观经济策略

针对当前城市照明规划为景观而景观,忽视夜景建设所蕴含的巨大经济潜力的设计误区,提出将景观经济策略引入西部欠发达地区城市照明规划中.照明规划除承担城市的修饰与美化作用外,还应与整合地方优势资源、发展旅游经济、促进休闲娱乐产业、吸引投资等相关领域有机联系,以夜景建设为手段,实现提高城市品质与促进经济发展的双赢功效.并以柳州市城市照明规划为例进行了剖析.     

山区城市空间发展的有机生长模式研究--以浙江省常山县城为例

山区城市的空间发展受到地形限制而呈现多样化的布局模式。常山县城市空间发展模式的建立以有机生长为基本理念,形成指状的总体发展模式、树枝状丛簇结构的交通组织模式和“点-线-片-向”的绿地系统模式。     

Characterizing the deformation behavior of Tertiary sandstones

Tertiary sandstones possess deformational behavior different from hard rocks, especially the relatively larger amount of volumetric dilation during shearing. Such excess dilation contributes to the increase of crown settlement during tunnel excavation and accounts for several cases of tunnel squeezing within Tertiary sandstones. Therefore, the deformation behavior of Tertiary sandstones sampled from more than 13 formations was studied. To distinguish the volumetric deformation induced by hydrostatic stress or by shear stress as well as to decompose the elastic and the plastic components of strains, special experimental techniques, including pure shear tests and cycles of loading–unloading were applied.The experimental results reveal that the deformation of Tertiary sandstone exhibits the following characteristics: (1) significant amount of shear dilation, especially elastic shear dilation; (2) non-linear elastic and plastic deformation; (3) plastic deformation occurs prior to the failure state. Furthermore, features of plastic deformation were inferred from experimental results and, as a result, the geometry of plastic potential surface and the hardening rule were accordingly determined. A constitutive model, involving nonlinear elastic/plastic deformation and volumetric deformation induced by shear stress, is proposed. This proposed model simulates the deformational behavior for the shear-dilation-typed rocks reasonably well. Furthermore, tests on the versatility of the proposed model, including varying hydrostatic stress and stress paths, indicate that the proposed model is capable of predicting deformational behavior for various conditions.     

陆丰城区旧城改造探析

城市建设反映地方的社会、经济发展水平，因为各种各样的原因，陆丰市（指城区，下同）新区开发缓慢，旧城老化严重，城市建设水平明显落后于周边其他县市。为了改善人居环境，提高城市建设水平，加快城市建设步伐，政府制定了一系列方针政策，旧城改造作为人民群众迫切需要和城市建设的重要任务已经提到政府的工作日程上，因此探析陆丰市旧城状况和改造思路具有重要的现实意义。     

城市旧路改造中SMA面层反射裂缝的控制

针对我国当前水泥混凝土路面改造中常见的反射裂缝问题,简要论述了反射裂缝的形成原因,在此基础上介绍了SMA路面的特点,并对SMA面层反射裂缝的防治与控制提出了一些建议。     

王维辋川别业的人文意境及其美学特征

王维是唐代杰出诗人、画家、造园艺术家,佛性禅意对其艺术思维的形成有着重要影响,其造园思想在中国古典园林的发展历程中占有重要地位。王维营造的园林作品“辋川别业”,其人文意境颇具禅意,同时有着天真、生动、性灵的美学特征,是唐宋写意山水园的代表作。     

Removal of humic substances (HS) from water by electro-microfiltration (EMF)

Humic substances (HS) represent the common agents contributing to flux decline during membrane filtration of natural water. In order to minimize the fouling during microfiltration (MF) of HS, modifying the operation of MF presents a promising alternative. A laboratory-scale electro-microfiltration (EMF) module was used to separate Aldrich HS from water by applying a voltage across the membrane. The presence of an electric field significantly reduced the flux decline. A flux comparable to that of ion-free water was attained when the voltage was near the critical electric field strength (Ecritical), i.e., the electrical field gradient that balances the advective and electrophoretic velocities of solute. At an applied voltage of 100 V (approximately 110 V/cm), it was able to reduce UV absorbance at 254 nm (UV254), total organic carbon (TOC) and trihalomethane formation potential (THMFP) by over 50% in the permeate. Results from 1H nuclear magnetic resonance (1H NMR) analysis suggest that the aromatic and functionalized aliphatic fractions decreased significantly in the permeate. The charged HS have large molecule weight compared with those passing through membrane. Results clearly indicate that a combination of electric force with MF can increase HS rejection and decrease flux decline. Electrophoretic attraction was the major mechanism for the improvement of flux and rejection over time.     

溶剂抽提偏三甲苯-正辛烷三元体系液-液相平衡的对比分析

在70℃下采用浊点法分别测定了二甲亚砜、N-甲酰吗啉、四甘醇与偏三甲苯-正辛烷三元体系液-液相平衡数据,得到体系的液-液分层曲线和结点数据,并用液-液分层曲线和体系物性（折光指数、密度）相结合的方法对平衡数据进行了分析。结果表明：溶剂的溶解能力的次序为：N-甲酰吗啉＞二甲驱砜＞四甘醇;溶剂的选择性次序为：二甲亚砜＞四甘醇＞N-甲酰吗啉,三种溶剂中二甲亚砜同时具有较高的溶解能力和选择性,较适合萃取偏三甲苯-正辛烷的混合溶液。研究结果可以为溶剂抽提过程相平衡数据库提供基础数据,并为重芳烃抽提的溶剂选择提供参考。