骚扰电话治理形势分析与风险应对研究

本文对运营商骚扰电话治理工作以及当前的治理形势进行梳理,总结归纳了骚扰电话治理面对的风险与挑战,分析并提出了骚扰电话治理的发展方向,为下一步骚扰电话治理工作提供了思路.     

CMOS影像感应器构装——湿式无电镀镍沉积技术之最佳化

无电镀镍金（Electroless Nickel ＆ Immersion Gold;简称ENIG）沉积可以选择性地沉积于铝垫,由于此技术不必使用高成本之光阻微影制程,也不需真空溅镀制程,它可以降低制造成本。然而在实际制造大量生产时,常常面临到化学镀液很难控制之问题。经由精密控制其化学镀液中之一些重要参数,例如温度、pH值、还原剂、镍及稳定剂浓度等,可以明显提高制程性能,以满足量产需求。     

热处理改善未掺杂LEC GaAs中EL2分布均匀性机理的研究

根据ＥＬ２分布的热处理行为和Ａｓ沉淀分布特征的实验结果，讨论了Ａｓ沉淀对ＥＬ２分布的影响和热处理改善ＥＬ２分布均匀性的机理。     

氢水平衡法制备二氧化钒薄膜及XPS能谱分析

采用溶胶－凝胶法，结合氢水平衡还原处理得到了二氧化钒薄膜，对薄膜的XPS能谱分析及对反应体系的热力学分析表明，氢水 平衡还原处理是制备二氧化钒薄膜的一种可行方法。     

Videographic Documentation of an Open Cyst Converting Into a Sulcus Vocalis

Study Design

Case study.

Discussion

The origin of sulcus vocalis is debatable, it may arise from a congenital or acquired cyst that ruptures leaving a sulcus attached to the deep layer of the lamina propria. This has been hypothesized but never shown before.

Conclusion

In this article, we present the first videographic documentation of an intracordal cyst that over time may have become a sulcus vocalis.     

Practical scale modification of oleogels by ultrasonic standing waves

Lipid-based materials, such as substitutes for saturated fats (oleogels) structurally modified with ultrasonic standing waves (USW), have been developed by our group. To enable their potential application in food products, pharmaceuticals, and cosmetics, practical and economical production methods are needed. Here, we report scale-up of our procedure of structurally modifying oleogels via the use of USW by a factor of 200 compared to our previous microfluidic chamber. To this end, we compared three different USW chamber prototypes through finite element simulations (FEM) and experimental work. Imaging of the internal structure of USW-treated oleogels was used as feedback for successful development of chambers, i.e., the formation of band-like structures was the guiding factor in chamber development. We then studied the bulk mechanical properties by a uniaxial compression test of the sonicated oleogels obtained with the most promising USW chamber, and sampled local mechanical properties using scanning acoustic microscopy. The results were interpreted using a hyperelastic foam model. The stability of the sonicated oleogels was compared to control samples using automated image analysis oil-release tests. This work enabled the effective mechanical-structural manipulation of oleogels in volumes of 10–100 mL, thus paving the way for USW treatments of large-scale lipid-based materials.     

Optical Method for the in-situ Measurement of the pH-value During High Pressure Treatment of Foods

This contribution presents a novel optical method to determine the pH-value during the high pressure treatment of foods. Up to date an appropriate online measurement device does not exist. The present study makes use of a multivariate approach, using the optical properties of pH indicators. An indicator mix of 16 different pH-sensitive substances is applied. The calibration of the system is performed taking five different buffer substances (TRIS, CAPS, citric, phosphoric and acetic acid buffers), applying thermodynamical considerations, to calculate the pH-value at high pressure. The corresponding spectra of the indicator mix is measured and fed to a multivariate data model together with calculated pH values. Different chemometric models have been constructed to estimate the pH value based upon the spectrum of the indicator mix. The calibration device covers a pH range from 2 to 8. After calibration it was possible to determine the pH value at pressures up to 450 MPa with an accuracy of 0.02 pH units in 9 different test media.     

关于油田变频器常见故障的分析与处理

变频器作为一种有效的变频调速控制系统,已成为目前国内各油田重要的节能控制设备。文中介绍了油田变频器常见的9类故障,分析了故障产生的原因,提出了解决问题的处理办法。通过对变频器故障与处理方法的介绍,希望对检修人员有所帮助。     

带式输送机常见故障及诊断技术综述

带式输送机是物料运输最常用的运输设备,它不仅能代替工人繁重的体力劳动,改善劳动条件,而且能提高生产效率,降低生产成本。本文首先针对带式输送机的几种常见故障,有针对性地提出解决问题的有效处理对策。然后,分析了带式输送机故障诊断的发展现状,并指出带式输送机故障诊断技术中存在的问题。最后,展望了带式输送机故障诊断技术的发展趋势。     

Prediction of early response to radiotherapy of uterine carcinoma with dynamic contrast-enhanced MR imaging using pixel analysis of MR perfusion imaging

Purpose

To assess the predictability of the response to radiotherapy of uterine carcinoma, this study retrospectively analyzed dynamic contrast-enhanced magnetic resonance images (DCE-MRI) taken before radiotherapy.

Materials and Methods

Forty-two patients with uterine carcinoma were studied, of whom 22 had adenocarcinoma and 20 had squamous cell carcinoma (SCC). In DCE-MRI analysis, two parameters, SIe and R_down, were measured. SIe is a median value for the degree of signal intensity change in all selected pixels in the tumor at 1–2 min after contrast agent injection. R_down is the ratio of the number of down-sloped pixels to that of all selected pixels 3–7 min after injection. The tumor volume reduction rate (TVRR) was measured by MRI-based volumetry in pre- and post-radiotherapy transverse T2-weighted images.

Results

Overall, TVRR was significantly correlated to both SIe (r=0.37, P=.015) and R_down (r=0.73, P<.0001). In the separate patient groups, SIe but not R_down was significantly different between the adenocarcinoma and SCC patients (t=3.64, P<.001). TVRR was not correlated to SIe in any group. TVRR was significantly correlated to R_down in adenocarcinoma patients (r=0.78, P<.001) but not in SCC patients.

Conclusion

SIe may reflect differences in histological characteristics. R_down may be useful for predicting the response to radiotherapy of uterine carcinoma.