地方政府在景德镇陶瓷文化传承中的角色与作用

传承和弘扬景德镇陶瓷文化,既是历史赋予景德镇的重要使命,也是景德镇地方政府履行其经济文化职能的必然要求。地方政府要积极扮演好陶瓷文化发展的规划者,陶瓷文化遗产的挖掘者、保护者、开发和利用者,陶瓷文化基础设施的建设者和维护者、陶瓷文化的品牌创建者和市场营销者等多重角色,并在陶瓷文化遗产的挖掘和保护、发展战略与规划的制定、陶瓷文化的深度开发、陶瓷艺术与文化的对外宣传、教育与交流,以及陶瓷艺术人才的培养等方面做出自己的努力。     

古埃及玻璃工艺特征研究

古埃及作为四大文明古国之一,孕育了人类历史上最早的玻璃工艺,丰富了人类的工艺文化,展现了古埃及人的聪明与智慧。结合古埃及独特的自然环境和宗教信仰,对古埃及玻璃工艺的材质、制作工艺、装饰手法以及造型等进行比较与分析,提出了古埃及玻璃工艺独具的特征与借鉴意义。     

Effect of agarose content on microstructures and mechanical properties of porous silicon nitride ceramics produced by gelcasting

<正>Porous Si3N4 self-reinforce ceramics were prepared by gelcasting using agarose solutions. By changing the agarose content in the slurries, the porous silicon nitride ceramics with different porosities, α→β-Si3N4 phase transformation, and mechanical properties were obtained. When the agarose content changed from 0.2% to 0.8% (w/w, based on powder), the porosities increased from 10.3% to 21.4%, while the fracture strength decreased from 455 to 316 MPa and the fracture toughness decreased from 6.6 to 5.5 MPa·m1/2. Many fibrous β-Si3N4 grains grown from the internal wall of the round pores is the typical microstructure of the gelcasting porous silicon nitride ceramic. Both elongated β-Si3N4 grains and suitable interfacial bonding strength contributes to high fracture toughness by favoring crack deflection and bridging. The growth mechanisms of fibrous grains resulted from the synergy of solution-diffusion-reprecipitation and vapor-liquid-solid (VLS).     

Microstructures and mechanical properties of SiBCNAl ceramics produced by mechanical alloying and subsequent hot pressing

Amorphous SiBCNAl powders were prepared via a mechanical alloying (MA) technique using crystalline silicon (Si), hexagonal boron nitride (h-BN), graphite (C), and aluminum (Al) as starting materials. SiBCNAl powders were consolidated by a hot pressing (HP) technique at 1800 °C under a pressure of 30 MPa in argon and nitrogen. The sintering atmosphere had a great influence on the microstructures and mechanical properties of the ceramics. The two ceramics had different phase compositions and fracture surface morphologies. For the ceramics sintered in argon, flexural strength, fracture toughness, elastic modulus and Vickers hardness were 421.90 MPa, 3.40 MPa·m1/2, 174.10 GPa, and 12.74 GPa, respectively. For the ceramics sintered in nitrogen, the mechanical properties increased, except for the Vickers hardness, and the values of the above properties were 526.80 MPa, 5.25 MPa·m1/2, 222.10 GPa, and 11.63 GPa, respectively.     

原位增容玻纤增强高流动性聚丙烯的研究

研究了不同方式的马来酸酐增容玻纤增强聚丙烯,结果表明,原位增容生产方式可以获得性能更好、流动性优异的共混改性聚丙烯材料,获得了生产工艺简单,加工成本更低的玻纤增强改性聚丙烯复合材料.     

玻璃在建筑中的应用

玻璃作为一种古老的建筑材料,在建筑中的应用非常广泛。据玻璃本身的特性,并结合实例,探讨了玻璃在古代建筑和现代建筑中的应用。运用玻璃材料创造出的通透、纯净的建筑空间为人们展示了建筑内在的空间次序和建筑外部的壮观景色,展现了设计师的巧妙构思。     

用有限元方法分析玻璃载芯片封装中的热力耦合问题

超薄液晶显示器(LCD)模块在经历了热压键合后,由于驱动芯片和玻璃基板之间的温度差异较大,会引起一定程度上的翘曲,并最终导致连接点界面分层现象的发生,影响器件连接可靠性。用实验的方法对比进行研究比较困难,我们用有限元数值模拟的方法并选择通用软件ANSYS对这一现象进行了分析;并详细分析了键合压力、温度、基板温度和IC/玻璃厚度对翘曲的影响。从分析中得知,导致玻璃翘曲的主要原因是键合温度。     

Egyptian Coarse Ware in Early Islamic Palestine: Between Commerce and Migration

This study offers a critical re-evaluation of chronological aspects and distribution patterns concerning two main types of Egyptian coarse ware (Red-Brown Ovoid Amphorae and Coarse Ware Basins) identified in Early Islamic assemblages (eighth to tenth centuries AD) in Palestine. While the distribution of Egyptian amphorae is explained in socio-economic terms as reflecting normal trade relations, the appearance of Egyptian coarse ware basins in a limited number of local assemblages may imply the actual presence of Egyptian migrants (merchants or soldiers).     

太阳能光伏玻璃幕墙技术与应用简介

强调了太阳能在能源匮乏的今天的重要性,介绍了太阳能光伏玻璃幕墙的基本原理,分析了光伏玻璃幕墙的开发与应用的情况,指出太阳能光伏玻璃幕墙这类绿色节能产品在能源日趋紧张的未来将会有更大的发展空间。     

Shadow glass transition as a thermodynamic signature of β relaxation in hyper-quenched metallic glasses

One puzzling phenomenon in glass physics is the so-called ‘shadow glass transition’ which is an anomalous heat-absorbing process below the real glass transition and influences glass properties. However, it has yet to be entirely characterized, let alone fundamentally understood. Conventional calorimetry detects it in limited heating rates. Here, with the chip-based fast scanning calorimetry, we study the dynamics of the shadow glass transition over four orders of magnitude in heating rates for 24 different hyper-quenched metallic glasses. We present evidence that the shadow glass transition correlates with the secondary (β) relaxation: (i) The shadow glass transition and the β relaxation follow the same temperature–time dependence, and both merge with the primary relaxation at high temperature. (ii) The shadow glass transition is more obvious in glasses with pronounced β relaxation, and vice versa; their magnitudes are proportional to each other. Our findings suggest that the shadow glass transition signals the thermodynamics of β relaxation in hyper-quenched metallic glasses.