李玮作品

著名陶艺家沛雪立说:对国学的尊崇,对传统书画的挚爱,对紫砂艺术的迷恋,对材料质感的兴味,对当代艺术的关注,以及对所有"现成"、"完美"的不满足与不满意……李玮对艺术关注面的宽阔,视角特殊而丰富,求得多样性的互为滋养、互为补充,形成其作品寓意深长,形式考究,学术气息浓郁,这就是李玮作品最显著的特征。     

全球迎来高油价时代

2005年,石油价格一路冲高,对全球经济产生了巨大影响。中国是石油和石油产品进口大国,价格上涨对经济发展十分不利。本文对2005年石油市场进行了回顾,并总结了权威机构对2006年的预测,希望对读者有所参考。     

铜及铜合金不同化学抛光工艺研究

对铜及铜合金化学抛光工艺进行了研究,考察了低浓度硝酸体系和双氧水体系对铜及其合金的抛光亮度、腐蚀失重以及对环境污染程度的影响。结果表明,低浓度硝酸体系抛光亮度高,适用范围广,对环境的污染较传统三酸体系少,虽然对铜及铜合金有一定的腐蚀,但返工对工件的尺寸影响不大,适用于冰箱、空调器等的蒸发管的抛光。双氧水抛光体系对铜及其合金腐蚀轻微,对环境的污染更少,但成本相对较高,适于对加工尺寸要求严格的铜及铜合金电子元件的化学抛光。     

人工智能技术在电气自动化控制中的应用思路分析

因为通过对人工智能技术进行运用,不仅能够对其的理论知识学习进行加强,也能够对电气自动化控制的工作进行有效的延伸,促使在其的发展过程中,人工智能技术逐渐成为其的管理手段。而且在电气自动化控制的过程中,通过对人工智能技术进行使用,不仅能够对生产效率进行大幅度的提高,也能够对电气控制的自动化进行实现。所以在模糊的控制基础上,能够对人工智能技术运用过程中所存在的问题进行及时的发现,确保通过模糊控制理论,不断对人工智能技术的运用效果进行强化,从而促使在电气传动中对模糊控制理论的指导作用进行充分的发挥。     

喷气燃料储存安定性的研究

对喷气燃料的储存安定性进行了探讨,对喷气燃料的氧化机理进行了详细的研究,对常用抗氧剂进行了对比,对喷气燃料的颜色安定性及蒸发损失进行了阐述,并对未来进行了展望。     

超滤-醇析提取黄原胶工艺条件

考察了3种不同的预处理方法对黄原胶收率和产品质量的影响,并对采用硅藻土过滤预处理法的稀释倍数与硅藻土的用量进行了优化。考察了膜,膜面流速,温度,操作压力及胶浓度对超滤对水透过通量的影响,并对这些参数进行了优化。考察了溶剂种类,用量及pH对黄原胶醇析的影响,并对其进行优化。     

缩氨基硫脲类受体的合成和表征

采用对甲基苯胺和高锰酸钾氧化生成对氨基苯甲酸,后者用磷酸三甲酯N甲基化,生成对二甲氨基苯甲酸,其经酯化、肼解得到对二甲氨基苯甲酰肼（A）。A与异硫氰酸对硝基苯酯反应,制得N-对二甲氨苯甲酰胺基-N’-对硝基苯基硫脲,收率76％;同理,对硝基苯肼与异硫氰酸对甲苯酯反应,得到N-对硝基苯胺基-N’-对甲苯基硫脲,收率41％。通过元素分析,IR,1HNMR对化合物的结构进行了表征。     

变温吸附碳捕集系统能效性能对标分析

准确且合理的能耗分析对碳捕集技术规模化发展至关重要,其既是碳捕集技术节能降耗的必要前期准备,也是碳捕集过程开展绿色化、清洁化性能评价的重要数据基础。因此,在对碳捕集过程的能源转换共性展开探索的同时,迫切需要面向工程实践的需求,形成易于操作的能效性能对标分析方法,从而保证对类型技术的性能认知可以在合理且统一的评价平台上进行归纳与比较。本工作基于对标分析(Benchmarking Analysis)方法,对变温吸附碳捕集(TSA)过程的能耗分析方法进行了阐述,包括流程、参数、模型等。研究了吸附温度和解吸温度对TSA能效性能结果的影响,演示并量化了该方法的可行性,重点对边界变化对评价结果的影响进行了讨论。提出的对标分析方法对碳捕集技术的能效性能对标评估给出了较具体的指导。     

油田开发中后期的采油工程技术优化

我国对油田开发以及油田资源是非常重视的,但对油田开发还是存在一定的不足。相对于油田的初期开采还是比较容易,但是在对油田的中后期的逐渐开采就会变的非常困难,因此,为了加强对油田的开发力度,就需要对采油工程技术进行优化。对油田的开发中后期的采油工程技术优化作出了探讨。     

潘柏林受邀创作佛山历史名人石湾公仔

本刊讯日前,禅城区石湾镇街道办联合佛山日报社、柏林艺术馆,共同举办新闻通报会,宣布邀请中国工艺美术大师潘柏林创作佛山历史名人石湾公仔。通报会上,中国工艺美术大师潘柏林对创作佛山历史名人公仔畅谈了白己的感受。他表示将会以对历史,对名人,对社会负责,     

新型挤出机头及其挤出流动分析

介绍了可安装在现有的通用挤出机上的芯棒旋转式长玻纤维螺旋在线复配塑料管材挤出机头的结构特点和工作机理，并对口模内纤塑熔体的流动进行了理论分析，采用ANSYS软件对口模内熔体的流动进行了模拟。结果表明：熔体的速度分布符合设计要求，即聚合物颗粒塑化熔融后在线混合入一定长度的玻璃纤维后，熔体分子和玻璃纤维沿所挤出圆形管材的管壁螺旋取向。     

非晶态Raney Ni-P/玻璃纤维催化蒎烯加氢

通过化学镀的方法制备出了高活性的非晶态RaneyNj-P/玻璃纤维催化剂,并把它用于催化蒎烯加氢合成顺蒎烷。结果表明:自制的催化剂可以使得蒎烯的转化率达到100%,选择性达到97%以上,并且可以循环使用25次以上。RaneyNi-P/玻璃纤维催化剂同RaneyNi相比具有更高的活性和选择性以及较长的使用寿命。     

非晶态Raney Ni-P/玻璃纤维催化蒎烯加氢

通过化学镀的方法制备出了高活性的非晶态RaneyNi-P/玻璃纤维催化剂,并把它用于催化蒎烯加氢合成顺蒎烷。结果表明:自制的催化剂可以使得蒎烯的转化率达到100%,选择性达到97%以上,并且可以循环使用25次以上。RaneyNi-P/玻璃纤维催化剂同RaneyNi相比具有更高的活性和选择性以及较长的使用寿命。     

非晶态骨架Ni-P/玻璃纤维催化蒎烯加氢

通过化学镀的方法制备了高活性的非晶态骨架 Ni-P/玻璃纤维催化剂,用于催化蒎烯加氢合成顺蒎烷。在温度75 ℃、压力1.6 MPa、催化剂用量3.5 g的条件下,该催化剂可使蒎烯的转化率达到100%,选择性达97%以上,并且可循环使用25次以上。骨架 Ni-P/玻璃纤维催化剂同骨架Ni催化剂相比,具有更高的活性和选择性以及较长的使用寿命。     

工业埋地管道环氧煤沥青玻璃丝布防腐工程施工经验谈

从环氧煤沥青玻璃丝布施工方法及材料入手,分析了在防腐施工中应注意的问题,强调了过程控制的重要性。     

Physical properties of some injection molded thermoplastics of various glass contents

This paper discusses the influence of fiber-glass reinforcement content on the physical properties of four theroplastic injection molded materials. In addition, the effects of binder difference (i.e., thermoplastic vs. thermosetting), associated with the reinforcement, are described. Several properties that were expected to show response to glass content and binder differences have been examined. Among these are short- and long-term tensile strength, flexural properties, compressive resistance, impact strength, deflection temperature under load (DTL), and environmental stress cracking. This work has demonstrated that fiber-glass reinforcement of the particular thermoplastics described in this paper has led to substantial improvements in both the stiffness and strength characteristics of the base resins. The responses to binder chemistry difference was found to be slight in many instances for the resins, as reflected by the tests described herein. However, the long-term tensile, impact, DTL, and stress-cracking tests have shown considerable sensitivity to binder change in some cases, especially with respect to the polypropylene, SAN and polyamide plastics. The particular response to a given binder system, however, appears to vary both with the material under test and the property used to detect such response.     

池窑拉丝控制通道数学模型、控制策略及PID参数整定

介绍了1975年到2012年玻纤池窑拉丝过程控制中的数学模型的获取、控制策略的实施与PID参数整定的研究与设计工作;给出用"比值法"、"从飞升曲线快速自寻最佳传递函数"等从飞升曲线上求解被控对象数学模型的新方法;通过一座池窑主控对象的数学模型测定、控制策略的工业实施,提出了PID参数整定的新方法,得到了该窑一个完整数学模型网络;同时介绍了当今池窑拉丝的部分控制通道数学模型、控制策略与实际运行时的PID参数,为池窑DCS控制系统组态与投运提供较完整的设计资料。     

Heat Treatments as a Method of Protection for a Ceramic Fiber—Glass Matrix Composite

Thermal exposure in air has been shown to embrittle a ceramic fiber-glass matrix composite by the infiltration of oxygen to the fiber-matrix interface. Samples exposed at sufficiently high temperatures demonstrate less embrittlement and less strength loss than samples exposed at intermediate temperatures, because of a material flow which seals the surface. It is shown that the protection against embrittlement provided by a short, high-temperature thermal treatment remains in force for materials subsequently exposed to intermediate temperatures under both loaded and unloaded conditions.     

Mechanical and thermal properties of epoxy-POSS reinforced-(biphenyl diol formaldehyde/epoxy hybrid resin) composites

To enhance the properties of epoxy composites, the biphenyl diol formaldehyde resin (BPFR) and glycidyloxypropyl polyhedral oligomeric silsesquioxane (G-POSS) were synthesized and used for modification of fiber-glass reinforced composites of epoxy resin (ER). The BPFR was employed to cure epoxy resin with different G-POSS contents and the laminates of fiber-glass reinforced hybrid composites prepared from BPFR, ER and G-POSS. The dynamic mechanical properties, thermal properties, mechanical and electrical properties of the hybrid composites were characterized by dynamic mechanical analyzer, thermogravimetric analyzer and electroproperty detector. The results showed that the T _g of the composites is increased with the addition of G-POSS. When the content of G-POSS is 5 wt%, the tensile and impact strength of the hybrid composites are 249.87 MPa and 63.83 kJ/m², respectively, which are all 30 % higher than those of non-added composites. At G-POSS content of 7 wt%, T _g of the material is 9.6 °C higher than pure BPFR/ER composite, and the initial decomposition temperature, T _id, is enhanced by about 29 °C. Dielectric constant, ε, and dielectric loss, tanδ, of the hybrid composites are between 0.53–0.7 and between 0.004–0.012, respectively.     

The reinforcement mechanism of fiber-glass reinforced plastics under wet conditions: A review

Reinforcement mechanisms of fiber-glass reinforced plastics (FRP) under wet conditions are reviewed with emphasis on molecular structures of glass/matrix interfaces. Included are studies on glass surface, the glass/coupling agent interface, silane coupling agents on glass surfaces as well as in solution, the coupling agent/matrix interface, extending to the interphase of particulate-filled composites, and matrix resin. For a better understanding of wet strength of FRP, the structures under dry conditions are extensively, reviewed. The chemical bonding theory still dominates other reinforcement theories. The importance of other factors such as orientation of silane coupling agents and the restriction of matrix polymer conformations are also considered. Based on recent development in spectroscopy, molecular level research of the glass/matrix interfaces has been initiated in the past decade, yet only a few spectroscopic investigations on the function of water have appeared. It is concluded that the correlation between spectroscopic investigations and mechanical properties of a FRP is indispensable.