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双语推荐：日盲

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简述了Rb2Te（Cs）日盲紫外阴极的制作工艺并制作了Rb2Te（Cs）日盲紫外阴极样品。测量了Rb2Te（Cs）日盲紫外阴极样品的光谱响应、光谱反射率和250nm波长激发条件下的荧光谱。测量结果表明，在现有工艺条件下，Rb2Te（Cs）日盲紫外阴极的灵敏度高于cs2Te日盲紫外阴极，与Cs2Te日盲紫外阴极相比，光谱响应的峰值波长更短，位于250nm，而长波截止波长位于312nm。另外Rb2Te（Cs）日盲紫外阴极的短波日盲特性更好，633nm的光谱灵敏度为1015mA／W的数量级，较Cs2Te日盲紫外阴极低两个数量级。光谱反射率测量结果表明，Rb2Te（Cs）日盲紫外阴极的光谱反射率在200~400nm的波长范围内均高于Cs2Te日盲紫外阴极，而在400~600nm的波长范围内，反射率却低于Cs2Te日盲紫外阴极。Rb2Te（Cs）日盲紫外阴极的光谱反射率曲线与Cs2Te日盲紫外阴极的光谱反射率曲线相比较，曲线的形状相似，反射干涉加强峰的波长基本相同，由此可推断出Rb：Te（Cs）紫外阴极的折射率与Cs2Te紫外阴极的折射率基本相同，仅在长波范围内稍有区别。荧光谱的测试结果表明，在同样条件下，在200~450nm的波长范围内，Rb2Te（Cs）紫外阴极的荧光弱于Cs2Te紫外阴极的荧光，原因是Rb2Te（Cs）阴极的光谱反射率高于Cs2Te紫外阴极的光谱反射率，因此光吸收更少，导致荧光更弱。所以Rb2Te（Cs）日盲紫外阴极同Cs2Te日盲紫外阴极的性能类似，均可用于日盲紫外探测成像器件。
In this paper, the processing technology of Rb2Te(Cs) solar blind ultraviolet cathode is described and samples of Rb2Te(Cs) solar blind ultraviolet cathode were produced. The spectral response, spectral reflectance and the fluorescence spectra under the excitation condition of 250 nm wavelength of Rb2Te(Cs) solar blind ultraviolet cathode samples were measured. The findings suggest that under the existing technological condition, the sensitivity of Rb2Te(Cs) solar blind ultraviolet cathode is greater than that of Cs2Te;as compared with Cs2Te solar blind ultraviolet cathode, the peak wavelength in spectral response is shorter at 250 nm, while the cutoff wavelength of long wave is at 315 nm. In addition, Rb2Te(Cs) solar blind ultraviolet cathode has better solar blind property;the spectral sensitivity at 633 nm is ranked at the order of magnitude of 10-5 mA/W, two order of magnitudes lower than that of Cs2Te solar blind ultraviolet cathode. In terms of spectral reflectance, the findings

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叙述了K2Te日盲紫外阴极的制作工艺并制作了K2Te日盲紫外阴极，测量了K2Te日盲紫外阴极的光谱响应、光谱反射率、光谱吸收率和250 nm波长激发条件下的荧光谱。与Cs2Te日盲紫外阴极相比较，K2Te日盲紫外阴极的光谱响应较低，而且光谱响应的峰值波长更短，长波截止波长也更短。K2Te日盲紫外阴极光谱响应的峰值波长位于215 nm，长波截止波长位于305 nm，而Cs2Te日盲紫外阴极光谱响应的峰值波长位于250 nm，长波截止波长位于323 nm。另外K2Te日盲紫外阴极的日盲特性更好，633 nm波长的光谱响应为10－6 mA/W的数量级，较Cs2Te日盲紫外阴极低一个数量级。光谱反射率的测量结果表明，K2Te日盲紫外阴极的光谱反射率曲线形状与Cs2Te日盲紫外阴极的光谱反射率曲线形状相似，区别是整个光谱反射率曲线向短波方向移动，且波长越长，移动越大。另外K2Te日盲紫外阴极的光谱反射率在200～450 nm的波长范围内均高于Cs2Te日盲紫外阴极的光谱反射率，由此可推断出K2Te 紫外阴极的折射率高于Cs2Te 紫外阴极的折射率，并且波长越长，折射率差别越大。光谱吸收率的测量结果表明，K2Te 日盲紫外阴极的吸收率低于Cs2Te 紫外阴极的吸收率。光谱吸收率越高，光谱响应也越高，与光谱响应的测量结
In this paper the making process of K2Te solar blind ultraviolet photocathode is described and its behavior such as spectral response, spectral absorptance and the fluorescence spectra under the excitation of 250nm wavelength UV light were measured. The measured results are compared with corresponded results of Cs2Te solar blind ultraviolet photocathode. Our findings suggest that the spectral response of K2Te solar blind ultraviolet photocathode is lower, and the peak wavelength of the spectral response is shorter, moreover the long-wavelength threshold is shorter as well. The peak wavelength of the spectral response is 211nm, the long-wavelength threshold is 298nm for the K2Te photocathode, while the peak wavelength of the spectral response is 250nm, and the long-wavelength threshold is at 347nm for the of Cs2Te photocathode. In addition, K2Te photocathode has better solar blind property since its spectral response at 633nm is in the order of magnitude of 10-6mA/W, almost tw

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以碳化硅(SiC)和Ⅲ族氮化物为代表的宽禁带半导体是近年来国内外重点研究和发展的新型第三代半导体材料，具有禁带宽度大、导热性能好、电子饱和漂移速度高以及化学稳定性优等特点，用于工作于紫外波段的光探测器件具有显著的材料性能优势。宽禁带半导体紫外探测器的主要应用包括：国防预警、环境监测、化工和生化反应的光谱分析和过程检测、以及天文研究等。本文主要回顾近年来南京大学在此方面开展的一些代表工作，所涉及到的典型器件有：具有极低暗电流的 AlGaN基日盲 MSM紫外探测器、高量子效率 AlGaN基日盲雪崩光电探测器、以及 SiC基可见光盲紫外单光子探测器。
Wide-bandgap semiconductors,such as group-Ⅲ nitrides and SiC have recently attracted much attention in ultraviolet(UV)photodetector applications due to their large bandgap energy,high electron saturation velocity, superior radiation hardness,and high temperature resistance.Such photodetectors have a variety of potential applications including missile flame detection,environmental monitoring,chemical/biological agent detection,and solar physics.In this paper,some of our recent works on design and fabrication of UV photodetectors based on Ⅲ-nitride and SiC semiconductors are reviewed.These related devices include:AlGaN-based MSM solar-blind photodetectors with ultra-low dark current,AlGaN-based solar-blind avalanche photodiodes with high quantum efficiency,and SiC-based visible-bind avalanche photodiodes with single photon counting capability.

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研制一种以薄的高阻AlGaN覆盖层作为肖特基势垒增强层的N?AlGaN基金属?半导体?金属（MSM）日盲紫外光电探测器。与无覆盖层的参考器件相比，覆盖高阻AlGaN层后探测器的暗电流大幅度减小。在5 V偏压下，覆盖高阻AlGaN层的光电探测器的暗电流为1.6 pA，响应度为22.5 mA/W，日盲紫外抑制比大于103，探测率为6.3×1010 cm·Hz1/2/W。
An n?type AlGaN?based metal–semiconductor–metal(MSM)solar?blind ultraviolet(UV)photodetector(PD) taking thin high?resistive AlGaN cap layer as Schottky?barrier enhancement layer was developed. Compared with the control PDs without the thin cap layer,dark current of PD with high?resistive AlGaN cap layer is significantly small. At the bias voltage of 5 V,dark current of PD with high?resistive AlGaN cap layer is 1.6 pA,its responsivity is 22.5 mA/W,solar?blind/UV rejection ra?tio is more than 103,and detectivity is 6.3×1010 cm·Hz1/2/W.

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目的研究基于序列的指令对非镇静脊柱侧弯患者磁共振图像质量的影响。方法自2012年1月1日~2013年5月30日,对100例非婴幼儿无需镇静的脊柱侧弯患者,包括老年退变型患者,行MR检查,采用随机双盲分组实验,分序列化指令组及对照组,每组50例,采用双盲法评估图像质量,评估序列化指令对MR图像质量的影响。结果序列化指令组MR图像可诊断率为96%,其中图像质量优达88%;对照组MR图像可诊断率为85%,其中图像质量优为60%,P=0.036、P=0.001,结果显示二者差异有统计学意义。结论序列化指令可显著提高非镇静脊柱侧弯患者MR检查的图像质量,在非镇静脊柱侧弯患者MR检查中有重要价值。
Objective To study the impact of protocol-based MRI on image quality in non-sedated patients with scoliosis. Methods From 1/1/2012 through 5/30/2013,100 patients with scoliosis were randomized into protocol-based group(50)and control group(50)for the MRI.The image quality of both groups was evaluated without knowledge of the clinical or imaging findings.Results The images were diagnostic in 96%of the protocol-based group,significantly higher than the 85%in the control group(P=0.036). The image quality was good in 88%of the protocol-based group,significantly higher than the 60%in the control group(P=0.001). Conclusions Protocol-based MRI improves the image quality in non-sedated patients with scoliosis.

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目的：探讨胸腔镜技术治疗先天性食管闭锁术后食管狭窄的可能影响因素，以规避部分有害因素，降低食管狭窄的发生率。方法回顾性分析2008年10月至2013年4月本院经胸腔镜治疗的46例先天性食管闭锁患儿临床资料，其中18例术后诊断为食管狭窄；拟定可能影响因素包括：手术时体重、手术日龄、缝合方式、胸腔镜手术学习曲线、食管盲端距离、呼吸机使用时间、胸腔引流管的使用、术后GER、吻合口漏及术后进食时间；按各因素条件使用Excel表将46例患儿相关资料建立数据库，先行单因素检验，再将可能的危险因素纳入多因素非条件Logistic模型，筛选出影响术后食管狭窄的危险因素。结果手术日龄、手术体重及胸腔镜手术学习曲线在单因素分析中存在差异，而食管盲端距离、吻合口漏及术后GER在单、多因素分析中均有不同，差异有统计学意义（P＜0.05）。结论经胸腔镜治疗先天性食管闭锁术后食管狭窄主要与食管盲端距离、吻合口漏及GE R有关，预防措施主要是降低食管吻合口的紧张度，减少食管吻合口漏的发生和术后积极治疗GE R。
Objetive To explore the possible influential factors of anastomotic stricture in order to avoid the harmful factors,and to reduce the rate of anastomotic stricture after thoracospic repair of congenital esophage-al atresia. Methods Retrospective analysis was given to 46 cases of congenital esophageal atresia underwent thoracoscopic procedures in our hospital from October,2008 to April,2013.Among the 46 cases,18 were diag-nosed as esophageal stricture,which may be owing to the weight during the operation,the age,methods of anasto-mosis,thoracoscopic operation learning curve,gap length,ventilation time,drainage tube,GER,anastomotic leak-age,eating time,etc.A clinical database of 46 cases was set up with Excellaccording to all of those factors.The risk factors were identified through univariate analysis and multivariate logistic regression analysis. Results Dif-ferences were found in weight,age,thoracoscopic operation learning curve in univariate analysis,and in anasto-motic lea

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观察西咪替丁、甲硝唑联合激光治疗急性智齿冠周炎效果。方法:选取急性智齿冠周炎79例,随机分为试验组和对照组。试验组西咪替丁、甲硝唑液交替冲洗后,用曼迪森红外激光治疗仪照射5分钟,然后将两药片剂研成的药粉放进盲袋内;对照组局部双氧水、生理盐水冲洗后,也用红外激光治疗仪照射5分钟,盲袋内置入碘甘油,1次/日,5天后复诊评价疗效。结果:试验组的显效率均较对照组高(P0.01),无不良反应发生。结论:西咪替丁、甲硝唑联合激光是一种治疗急性智齿冠周炎的有效方法。
Objective:To observe treatment effect of cimetidine,metronidazole combined laser acute on pericoronitis.Methods:79 cases with acute pericoronitis were randomly divided into experimental group and control group.In experimental group,irradiation 5 minutes by Mandi Sen infrared laser treatment after cimetidine,metronidazole liquid alternately flushing,and then taken powder researched by two tablets into blind pouch.In the control group,also irradiated with infrared laser treatment for 5 minutes afer partial hydrogen peroxide and saline flush,then taken iodine glycerin into blind bag.1 time/day,evaluated the efficacy after 5 days.Results:The effective rate in the experimental group were higher than in the control group(P<0.01),and no adverse reactions occur.Conclusion:Cimetidine,metronidazole combined laser is an effective method of acute pericoronitis treatment.

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紫外告警技术在军事应用中扮演着重要的角色。基于“日盲”紫外光学系统的最佳工作波段240~280 nm ，设计了一款用于导弹逼近告警的光学系统。为提高系统接收的紫外辐射能、扩展系统探测范围以及简化系统结构，系统中采用了非球面和二元衍射光学元件。系统中含有5片透镜，其焦距为50 mm，视场角为43°。探测器采用ANDOR公司的iKon-L 936型CCD，其像元大小为13.5μm×13.5μm，有效成像面积为27.6 mm×27.6 mm。系统优化后，最大RMS半径仅为11μm左右，远小于像元尺寸。超过86%来自物方各视场的紫外辐射会聚在半径为6.75μm的圆内。像质表明，所设计的系统能够满足“日盲”紫外光学系统的工作条件。若减小焦距，则系统的视场角可进一步增大。
Ultraviolet (UV) warning technology is playing a very important roll in the field of military application. Based on the optimal working waveband of solar-blind UV optical system from 240 nm to 280 nm, an optical system was designed for missile approach warning. To enhance the received light energy, expand the detection range and simplify the system structure, aspheric surfaces and binary elements were adopted in the system. Only five elements were used to realize the focal length 50 mm and field of view (FOV) 43 degrees. iKon-L 936 from ANDOR company was selected as the UV detector, which has pixel size 13.5μm×13.5μm and active image area 27.6 mm×27.6 mm. After optimization, the maximum RMS radius is only about 11 microns, which is much less than pixel size of the detector and more than 86% of the light energy from each FOV is converged within the circle of radius 6.75 microns. The image quality shows the designed system can meet the working requirements of solar-blind UV

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随着电压等级的升高，直接验电方式越来越难以满足高压输电系统发展的需求。该文提出了一种非接触式特高压综合验电技术，即采用灵敏度极高，检测原理不同的电场传感器和日盲型紫外探头，在用激光对待测点测距定位后，对传输线、开关等高压设备的电场强度和电晕放电中的紫外脉冲分别进行实施检测，以确定线路和设备的带电状态。基于该技术研发了一种新型特高压综合验电仪。
The method of directly electrical inspecting will not meet the development of high voltage transmission line with the improvement of voltage level.The paper proposes a novel method of non-con-tact extreme high voltage synthetic electrical inspection based on electric field sensors and solar-blind ultraviolet detectors with higher sensitivity and different detection theories.The proposed method deter-mines the charged state of line and equipment by detecting the electric field intensity of high-voltage equipment ( transmission line and switches, etc.) and corona-discharging ultraviolet impulse after range-based localizing of detecting spot using laser.A novel extreme high voltage synthetic electrical inspec-tion equipment is developed based on the technique.

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针对中国钼矿资源开发所存在的地质勘查过度投入、产能盲日扩涨、采选产品附加值低、产品市场恶性竞争、企业抗风险能力较弱、矿山安全环境问题突出等问题，提出坚持中国钼采选业的可持续发展政策的建议，包括：健全钼矿资源可供性分析，实行钼矿资源勘查差别化政策；提高钼行业准入条件，严格生产配额管理；出台兼并重组政策，提高行业集中度；鼓励技术创新，提高产品附加值；坚持开发与环境保护协调发展。
Aiming at the problems during molybdenum resources development ,such as excessive investment in geological exploration ,blind expansion of production capacity ,mining products with low added value ,vicious competition in product markets ,enterprise weak anti-risk capability ,mine safety and environment problems etc .,corresponding suggestions were put out ,which promote sustainable development policy of molybdenum mining industry in China .The suggestions include improve the analysis of availability of molybdenum resources ,implement differentiated policies in molybdenum exploration ,increase access conditions and implement quota management in molybdenum industry ,increase the industry concentration , encourage technological innovation to increase additional products value ,and geological exploration and environment protection develop coordinately .

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