小功率金卤灯电弧管泡壳成形机理及设备的研究

本文介绍小功率金属卤化物灯电弧管用的石英玻璃特性，根据石英玻璃的特性来研究电弧管泡壳成形的方法，并计算玻管的堆料量，同时介绍泡壳成形机的工作原理和泡壳成形质量控制方法。     

基于能陷理论的石英谐振式力传感器的研究

采用能陷理论对石英谐振式力传感器的谐振器进行了分析和设计，通过基于基频的传感器和基于三次谐波传感器的性能分析，提出了采用三次谐波切角的ＡＴ切谐振器，并合理设计晶片及电极参数，可达到对非谐波及低次谐波的抑制作用；证明了基频传感器，尤其是三次谐波传感器工作于三次谐波比工作于基频时有更优性能。     

石英晶体薄膜厚度差动测量技术的研究􀀁

本文介绍一种石英晶体膜测厚的差动工作方式。它的厚度测量精度为１ｎｍ，分辨率为纳米级，其温度稳定性在０－＋４００℃范围内达到５０Ｈｚ。这种差动测量技术不仅可在真空镀膜工艺中实现在线测量，而且在纳米技术及超精细加工中具有广阔应用前景。     

石英谐振式力传感器的寿命分布􀀁

本文介绍了石英谐振式力传感器比较容易失效的应力下的寿命试验的设计，并用图估法和最佳线性无偏法（ＢＬＵＥ）估计其寿命分布参数，得到了传感器的寿命分布模型。     

高精度石英晶体热敏网络温度补偿系统的数学模型

较为系统的介绍了石英晶体振荡器温度补偿的若干热敏网络结构和补偿计算系统的设计结构，并讨论了系统设计过程所涉及的T-R曲线、T-V曲线及最小二乘法等数学模型，指出了高精度温度补偿的关键问题。     

测量小温差的石英数字传感器研究

一种测量小温差的石英数字式传感器,利用+5°Y切型石英晶片作为感温的10MHz振荡器敏感元件,利用AT切型石英晶体作为参考振荡器,差频后的信号作为数字传感器输出,其灵敏度达到0.001℃,经多段插值线性化后,测量3℃温差的误差<0.008℃。     

Monte Carlo analysis of the detection of clay occlusion of respirable quartz particles using multiple voltage scanning electron microscopy

The electron incident-energy dependence of the relative intensities of Al and Si x-rays produced in a respirable-sized quartz particle by scanning electron microscopy is sensitive to the inhomogeneity of the distribution of Al and Si in the particle. Realistic Monte Carlo calculations of this energy dependence validate the proposal to use this effect for the detection of particles in which an aluminosilicate coating occludes the surface of a silica core.     

不同原理的SF6混合气体密度监测技术差异分析

SF_6或SF_6/N2混合绝缘气体的密度直接决定着气体的绝缘性能,因此对气体密度的监测尤为重要。SF_6混合绝缘气体被认为是短期内最具发展前景的SF_6替代介质,国家电网公司目前正大力推广GIS母线用SF_6/N_2混合绝缘气体的应用。由于SF_6混合绝缘气体具有新的特性,原有的SF_6气体密度继电器无法反映设备内SF_6混合绝缘气体密度,为此,亟需开发SF_6混合绝缘气体的密度监测装置。文章对比分析了两种不同原理的SF_6/N_2混合绝缘气体密度监测技术,并探讨了具备混合比监测功能的SF_6/N_2混合绝缘气体密度监测技术。     

Electrostatic K-Feldspar/Na-Feldspar and Feldspar/Quartz Separation: Influence of Feldspar Composition

This article aims at contributing to the possibility of electrically separating K-feldspar/Na-feldspar and quartz/feldspar, investigating the behavior of mixtures composed of K-feldspar, Na-feldspar, and quartz concentrates. The findings highlight the importance of preheating the material and of interparticle contact. Tests conducted on binary mixtures of K-feldspar/Na-feldspar, K-feldspar/quartz, and Na-feldspar/quartz showed that it is possible to achieve satisfactory results in the separation of these species, by triboelectrical charging of the material, preheated to temperatures above 100°C, using a free fall chamber. Tests carried out on ternary mixtures have demonstrated that additional pretreatment with HF solutions improves the results.     

Quartz plates for determining sun protection in vitro and testing photostability of commercial sunscreens

Testing plate made of optical quartz has been developed for the purpose of determination of sun protection factor (SPF) _in vitro by the method of diffusion transmission spectroscopy; the plates were coarsened by sanding and grinding to surface roughness values (Ra) of 18 μm. The plate was coated with a film of sunscreen by an application of 2 mg cm⁻² as that used for determination of SPF _in vivo by the COLIPA method. The transmission values measured were converted into the SPF _in vitro and the protection factor in ultraviolet A light, UVAPF _{in vitro} . The testing plate was tested with commercial sunscreens. The found values of SPF _in vitro fit well with the values determined by means of the COLIPA method in vivo . The plates coated with sunscreen film were irradiated with light simulating the sun radiation. The values of protection factors obtained before and after irradiation were compared, and the differences were used for estimation of photostability of the UV filters included.