鼻咽癌放射治疗对听力的影响

本文探讨鼻咽癌患者放疗后对听力的影响，着重测试放疗前、放疗后鼻咽癌患者的听力变化。结果表明：放疗对内耳感音功能无明显影响，而对中耳传音功能有明显的改善作用。使听力得以恢复。     

汽车导航用压电振动陀螺

村田制作所采用压电陶瓷双晶片式振子 ,开发了结构简单的、用于汽车导航的压电振动陀螺。其性能指标如下 :工作电压 (dc) :5 V± 0 .5 V温度漂移 (max) :9(°) /s耗　　电 (max) :1 5 m A *响　　应 (max) :7Hz检测范围 :± 6 0 (°) /s输出噪声 (p- pmax) :1 0 m V静止时输出 (dc) :2 .5 V± 0 .4V使用温度下限 :- 3 0灵敏度 :2 5 .0 m V/(°)· s-1*使用温度上限 :80分辨率 :0 .1 (°) /s保存温度下限 :- 40灵敏度温度变化 :± 1 0 %保存温度上限 :85　 (- 3 0～ 80 ) *质　　量 (max) :2 0 g线　性 (FS) :± 0 .5 %尺　　寸 :2 3 .2…     

光动力作用对人膀胱癌细胞株BIU-87增殖代谢活性的影响

目的 :研究光动力抑癌作用机制。方法 :采用MTT法检测光动力作用后人膀胱癌细胞株BIU -87增殖代谢活性。结果 :光动力实验组吸光密度值 (0 .1683± 0 .0 3 3 7)显著低于实验对照组 (0 .5 12 8± 0 .0 3 82、0 .7775± 0 .0 93 2、0 .72 2 3± 0 .0 3 5 5、0 .72 10± 0 .0 3 69) (P <0 .0 1)。结论 :光动力作用降低了人膀胱癌细胞株BIU -87的增殖代谢活性 ,这可能是其抑癌作用机制之一。     

采用电脑激光肾病治疗仪治疗慢性肾炎及慢性肾功能不全的临床疗效观察

电脑激光肾病治疗仪与常规药物治疗结合 ,治疗慢性肾小球肾炎、肾病综合征、慢性肾功能不全 ,共 30例 ;并与单用常规药物治疗对照。结果 :慢性肾小球肾炎组 ,2 4小时尿蛋白由治疗前的 1.34± 0 .82 g/日 ,下降至0 .85± 0 .61g/日 ,与对照组相比 ,有显著性差异 ( P<0 .0 5) ;治疗组 2 4小时尿量由治疗前的 184 6.67± 356.69ml/日 ,增加至 2 0 78.33± 4 30 .0 5ml/日 ,与对照组相比 ,有显著性差异 ( P<0 .0 5)。提示 :该治疗仪对肾小球肾炎等慢性肾病有一定疗效     

光纤主干传输工程建设对光缆的要求

1　光缆的技术要求1.1　光缆的光学特性要求(1)模场直径 (1310ｎｍ波长 ) :(9.3± 0 .5 ) μｍ(2 )包层直径 :(12 5± 2 ) μｍ(3)芯 /包层同心度偏差 :<1μｍ(4)光纤截止波长λ :1180～ 132 0ｎｍ(5 )光缆截止波长λ :<12 70ｎｍ(6 )成缆后光纤衰减系数 :1310ｎｍ波长的衰减系数 <0 .36ｄＢ/ｋｍ ,12 85～ 1330ｎｍ波长范围内 ,任一波长的衰减系数与 1310ｎｍ波长的衰减系数相比 ,其差值不超过 0 .0 3ｄＢ/ｋｍ ;15 5 0ｎｍ波长的衰减系数<0 .2 2ｄＢ/ｋｍ ,1480～ 15 80ｎｍ波长的范围内 ,任一波长的衰减系数与 15 5 0ｎｍ波长的衰减系数…     

CSBT-BNT-NT系高介瓷料α_ε系列化的研究

进行了具有高介电常数的 (Ca,Sr,Ba) Ti O3(CSBT) - Ba6 - 3x Nd8+ 2 x Ti1 8O5 4 (BNT) - Nd2 Ti2 O7(NT)系瓷料介电常数温度系数 (αε)系列化的研究 ,采用多相混合控制技术 ,按李赫涅德凯混合法则 ,调整该三元系瓷料αε系列。研制的瓷料介电性能 :εr=90～ 15 0 ;tgδ( 2 0℃ ,1 MHz) ≤ (0 .5～ 5 .0 )× 10 - 4 ;αc( - 2 5～ + 85℃ ) =((0～ - 75 0 )± 6 0 )× 10 - 6℃ - 1 ;ρv( 2 0℃ ,DC 1 0 0 V) ≥ 10 1 2 Ω· cm。     

GSM基站系统用无源微波部件

南京电子器件研究所研究开发的无源微波部件 ,适用于 GSM、R- GSM、F- GSM基站系统。双定向耦合器的主要技术指标如下 :　　频段 / MHz　　　　　　 92 1～ 96 0主路插损 / d B <0 .2正向耦合度 / d B 40± 5正向耦合度 / d B 40± 5耦合口隔离度 / d B >2 0三阶交调 / d BC >90最大通过功率 / W 6 0工作温度范围 /℃ - 1 0～ + 6 5接口 SMA- K二合一、四合一合路器的主要技术指标如下 :频段 / MHz 92 1～ 96 0带内插损 / d B <3.5 (二合一 )<6 .8(四合一 )四波损耗 / d B >2 0隔离度 / d B >45每端口功率 / W >40工作温度范围 …     

δ—氨基酮戊酸—光动力疗法对红斑狼疮患者外周血中激活T淋巴细胞的影响

本文探讨了δ-氨基酮戊酸—光动力疗法 (ALA -PDT)对活动期红斑狼疮 (SLE)患者外周血中激活T淋巴细胞的影响。实验采用免疫荧光单标记—流式细胞仪检测 12例活动期SLE患者外周血中CD71阳性淋巴细胞百分比 ,观察其在ALA -PDT前后的变化。发现ALA -PDT能显著降低CD71阳性淋巴细胞百分比 ,ALA -PDT前CD71阳性细胞百分比为 12 31±1 40 ,ALA -PDT后继续培养 18小时下降至 6 5 9± 0 95 ,有非常显著的差异 (P <0 0 1)。本试验证实ALA -PDT能降低活动期SLE外周血中激活T淋巴细胞百分比 ,即可能抑制活动期SLE外周血中激活的T淋巴细胞的活性     

小儿先心病心脏手术前后血清神经元特异性烯醇化酶水平的动态观察

目的 :血清神经元特异性烯醇化酶 (s-NSE)是一个能够反映脑损伤的指标 ,本文通过对体外循环开放式心脏不停跳、停跳两种手术患儿 ,手术前后s-NSE的动态观察 ,以了解在脑保护方面何种手术方式更好。方法 :采用ELESA法测定体外循环开放式心脏不停跳、停跳手术先心病患儿各 2 0例 ,术前 2 4小时、术后 2h、术后 7天的s-NSE水平 ,并以 2 0例健康儿童作为对照组。结果 :1.手术组术前s-NSE水平低且组间无差异 (P >0 .0 5 )。 2 .手术组在术后 2h测定显示s -NSE水平显著增高 ,平均值为 8.3± 2 .3 μg/L(心脏不停跳组 )和 16.3± 6.2 μg/L (心脏停跳组 ) ,与术前比较差异非常显著 (P <0 .0 0 1) ;术后 7天s-NSE水平分别为 6.1± 2 μg/L(心脏不停跳组 )和 10 .8± 2 .3 μg/L (心脏停跳组 ) ,与术前比较差异显著 (P <0 .0 5 ;0 .0 1)。 3 .术后 2hs-NSE水平停跳组明显高于不停跳组 (P <0 .0 0 1) ,且术后 7ds-NSE水平两组比较亦有显著差异 (P <0 .0 5 )。结论 :1.先心病患儿术前s-NSE处于正常水平。 2 .体外循环开放式心脏手术先心病患儿的s-NSE水平短期内尚不能完全恢复。 3 .心脏不停跳手术较心停跳手术术后的s-NSE水平低且恢复较快。提示就脑保护而言 ,心脏不停跳术式可能较好。     

白藜芦醇对兔动脉粥样硬化基质金属蛋白酶表达的影响

目的探讨白藜芦醇对实验性动脉粥样硬化兔基质金属蛋白酶(MMP)表达的影响。方法选择新西兰纯种雄性大白兔50只随机分为三组,正常对照组10只,模型组20只,白藜芦醇组20只。采用液氮冻伤术建立动脉硬化模型,造模2个月后采用液氮冻伤术激发动脉硬化斑块破裂,模后2个月及激发试验后48h后分别对三组动物测定MMP-1、9的浓度。结果模型组造模后2个月MMP-1、9的浓度分别为(50.74±5.49)ng/ml和(337.69±8.98)ng/ml,同期白藜芦醇组MMP-1、9的浓度分别为(41.33±9.58)ng/ml和(309.83±10.59)ng/ml(P<0.01),激发试验48h后模型组MMP-1、9的浓度分别为(100.35±6.58)ng/ml和(869.56±12.37)ng/ml,同期白藜芦醇组MMP-1、9的浓度分别为(61.68±11.69)ng/ml和(411.24±15.74)ng/ml(P<0.01)。结论白藜芦醇能够降低MMP-1、9的浓度,从而预防和延缓动脉硬化的发生。     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

GaAsSb/InAlAs PA DHBTs Grown by Production MBE

The epi material growth of GaAsSb based DHBTs with InAlAs emitters are investigated using a 4 × 100mm multi-wafer production Riber 49 MBE reactor fully equipped with real-time in-situ sensors including an absorption band edge spectroscope and an optical-based flux monitor. The state-of-the-art hole mobilities are obtained from 100nm thick carbon-doped GaAsSb. A Sb composition variation of less than ± 0.1 atomic percent across a 4 × 100mm platen configuration has been achieved. The large area InAlAs/GaAsSb/InP DHBT device demonstrates excellent DC characteristics,such as BVCEO＞6V and a DC current gain of 45 at 1kA/cm2 for an emitter size of 50μm × 50μm. The devices have a 40nm thick GaAsSb base with p-doping of 4. 5 × 1019cm-3 . Devices with an emitter size of 4μm × 30μm have a current gain variation less than 2% across the fully processed 100mm wafer. ft and fmax are over 50GHz,with a power efficiency of 50% ,which are comparable to standard power GaAs HBT results. These results demonstrate the potential application of GaAsSb/InP DHBT for power amplifiers and the feasibility of multi-wafer MBE for mass production of GaAsSb-based HBTs.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.