色釉产品色差的控制

从色料、色釉的生产及使用多方位对色釉产品表面色差产生的原因进行详尽分析,并对色差的控制提出了指导性的建议。     

产品试制流程的对象化设计方法

以机电产品为例,提出了产品试制流程的对象化方法,包括流程模块分解、对象化设计、层次服务定义等.     

真空电弧镀膜中金属液滴的热过程研究

本文建立了真空电弧镀膜中液滴热过程的理论模型，求解了沉积ＴｉＮ膜过程中液滴的温度与粒径变化。计算表明，液滴在飞行过程中温度和粒径不断减小；粒径较小的液滴温度降低较大，甚至可能发生凝固。计算实例能较好解释早期ＴｉＮ膜的电镜分析结果，揭示液滴在薄膜中引起两种不同微孔的机理。     

基于层次分析法的城市反空袭防护目标选择

通过对防护目标的选定因素分析,城市反空袭防护目标指标体系包括目标层、准则层及措施层.利用层次分析法(AHP)法选定城市反空袭中的防护目标,形成数据表、建立并求解判断矩阵及一致性检验,以获得选择最优保护目标的排序权重.经实际运用,所建立的指标体系和方法更有利于合理、科学地选择防护目标.     

低合金钢靶板受尖头弹冲击的变形与断裂

研究了低合金钢板在尖头弹冲击条件下的侵彻过程,讨论了应力条件和材料冶金质量对损伤和断裂的影响。结果表明,在侵彻过程前期靶材主要表现为三向压应力下的塑性流动;中期,靶材挤压流动,靶材内部的流速差造成剪切变形,并导致沿轧制偏析带的开裂;后期,靶材在剧烈剪切作用下剪切变形、局部失稳、形成剪切带和沿剪切带的开裂或撕裂。断裂按微孔聚集型机制进行。通常所谓花瓣型开裂实质上就是上述在切应力作用下的剪切撕裂。     

测定饮料中山梨酸、苯甲酸的国标法改进

本通过对高校建立一支高素质的管理队伍的紧迫性和必要性的分析,结合目前高校管理队伍中存在的问题,提出了一些切实可行的方法。     

钢铁制造流程的能量流行为和能量流网络问题

为应对全球气候变化,钢铁工业在下一步技术转型中,应高度重视钢铁制造流程的能量流和能量流网络问题。本文从充分发挥钢厂三个功能的视角,阐述了钢铁制造流程中铁素物质流和碳素能量流的行为规律,提出了应注重与铁素物质流相关的碳素能量流的输入/输出特点和能量流网络构建以及相应的信息化集成调控的观点,剖析了钢铁工业节能减排的潜力,指出了提高钢厂综合竞争力和多方位服务于可持续发展的可能性,探讨了相关理论的建立、技术开发和工程化实施的策略等。     

NiCuZn ferrite flakes prepared using a sol-gel bubble method and its magnetic properties

Ni_0.23Cu_0.11Zn_0.66Fe₂O₄ ferrite flakes, with thickness of about 8 μm and average diameter of 20-35 μm, were prepared using a sol-gel bubble method. Morphology, phase evolution, static and dynamic magnetic properties of the flakes and their composites were studied. Magnetic measurements showed that easy magnetization direction of the flaky filler composite was parallel to its sample plane. Composites made of silicone resins and flakes had higher complex permeability, which can be attributed to the reduction in demagnetization factor due to their flaky shapes. This sol-gel bubble method should be also applicable to fabricating flakes of other multi-component oxides.     

Transition Temperature of Bi_2Sr_2CaCu_2O_(8+x) Superconducting Films Prepared from Commercial Precursors

This paper have made a systematic study of the superconducting Bi-2212 phase transition temperature, which has a transition temperature (Tc) around 80-93 K, and depends on precise control of synthesis conditions, mainly including heat treatment parameters, oxygen partial pressure, and annealing temperature. Partial melting of the sample during preparation helps to raise its Tc. To elucidate the origin of this strong effect, the samples were heated with different melting process. The rapid changes in Tc valu...     

SCr420HB钢材D粗夹杂物分析及控制措施

本文针对SCr420HB汽车钢钢材D粗1．5级的质量问题,分析了产生的原因,提出了具体控制措施,使钢材高倍夹杂物Dm级别达到QJ／DT01．13135-2009标准要求。