关节镜下钬激光治疗半月板损伤

目的 :总结和探讨关节镜下钬激光治疗半月板损伤的手术疗效。方法 :2 0 0 0年 1月 - 2 0 0 3年 12月 ,对 18例半月板损伤患者行关节镜下钬激光治疗。结果 :随访 6 - 18个月 ,平均 12个月 ,Neer评分法对手术疗效进行分析 ,优良率为 94 .4 %。结论 :关节镜下钬激光治疗半月板损伤操作简便 ,手术时间短 ,有较好术后疗效 ,是一种安全有效的手术工具。     

超脉冲CO2激光治疗鼾症68例报告

目的自1998年6轮?001年6月,应用超脉冲CO2激光行下悬雍垂腭咽成形术,治疗鼾症68例,术后随访6～24个月,临床症状改善率达76%.结论本方法操作简单,安全可靠,疗效确切,术后并发症少.     

毒蛇咬伤的救治及护理

1　临床资料与急救处理本科自 2 0 0 0年 6月到 2 0 0 3年 6月成功救治、护理 3 6例毒蛇咬伤患者。本组患者 3 6例 ,男 2 0例 ,女 16例。年龄 17-5 6岁 ,3 6例均为下肢咬伤 ,所有患者经积极抢救 ,精心护理全部治愈。1.1　早期缚扎〔1〕　应争取在咬伤后立即在距伤口上方 3～lOcm处扎止血带 ,松紧以能阻断淋巴及静脉的回流 ,不妨碍动脉血流为宜 ,每隔 15min放松 2～ 3min。1.2　伤口的处理　彻底清洗伤口。患者入院后立即用 3 %双氧水冲洗伤口 ,也可用肥皂水或生理盐水洗净消毒后 ,以蛇咬痕为中心在局麻下作“十”字切口切开排毒。1.3　季德…     

低能量He—Ne激光照射治疗腋臭术后创面延迟愈合的临床观察

1　临床资料1 1　观察对象 :1 999年 6月～ 2 0 0 0年 1 2月 ,我科共收治 2 1例腋臭切除术后创面延迟愈合的患者 ,其中男性5例 ,女性 1 6例 ,平均年龄 2 5岁。 2 1例均为外院行腋臭手术治疗后 3周以上创面仍未完全愈合的病例 ;其中双侧未愈合者 6例 ,单侧未愈合者 1 5例。1 2　方法 :①创口的处理 :常规用碘酒、酒精消毒创口周围皮肤 ,用生理盐水棉球沾净创口内的分泌物 ,剪去坏死组织。根据创口情况选择用药 :( 1 )创口平浅 ,肉芽组织颜色鲜红、呈细颗粒状 ,分泌物少 ,易出血 ;用凡士林纱布换药 ;( 2 )局部分泌物较多且炎症重 ,肉芽组织…     

FK506和环孢素A抗肾移植排斥反应的疗效观察及护理

1　对象和方法1999年 8月至 2 0 0 1年 4月 ,肾移植术前监测血糖、肝功能正常 ,肾移植术后服用FK5 0 6抗排斥治疗 34例 ,肾移植术后服用CsA抗排斥治疗 38例 ,其中男性 4 0例 ,女性 32例 ,年龄 19～ 6 5岁 ,平均 35 .2± 7.1岁。供受者组织配型良好 ,群体反应性抗体阴性 ,淋巴细胞毒性试验 ,<10 % ,供肾热缺血时间 3～ 17min ,平均 10 .4± 2 .9min ,供肾冷缺血时间 6～ 2 0小时 ,平均 7.5± 3.5小时。两组病例在年龄、性别、原发疾病、组织配型、群体反应性抗体、淋巴细胞毒性试验、冷 /热缺血时间、术式、术后辅助治疗方面差异均无显著性…     

60Co放疗对鼻咽癌患者中耳功能的影响

目的 :研究放射治疗对鼻咽癌患者中耳功能的影响。方法 :5 0例鼻咽癌患者接受放疗前、放疗后 1年、放疗后 2年听力及中耳功能检测。结果 :中耳压力 :放疗前 (- 78± 6 9)dapa,放疗后一年为 (- 193± 98)dapa,放疗后 2年为 (- 12 2± 84)dapa(p <0 .0 1)。声顺值 :放疗前 (- 0 .98± 0 .6 7)ml,放疗后一年下降为 (0 .5 6± 0 .74)ml,放疗后两年 (0 .73± 0 .6 9)ml(p <0 .0 1)。放疗后中耳病变及耳聋比例增加 (P <0 .0 1)。结论 :放疗可造成中耳及耳蜗功能损害 ,加重鼻咽癌患者耳聋发生。     

2002年IEEE MTT-S会议消息

(International Microwave Symposium)2 0 0 2年国际微波会议 (IMS2 0 0 2 )将于 2 0 0 2年 6月 2日至 7日在美国华盛顿州西雅图召开。有关会议信息见网页 :www.ims2 0 0 2 .org征文要求 :论文均需通过网址以电子稿件形式投寄 (Electronic Paper Submission) ,不接受硬拷贝 (hardcopies)、书面文字以及传真稿等。文稿形式 :分为论文 ,短文和交流讨论三种。截稿日期 :doc形式　　　　 2 0 0 1年 11月 2 6日pdf形式　　　　 2 0 0 1年 12月 3日涉及的技术领域 :电磁场分析、计算机辅助设计、无源微波元件、有源微波元件、毫米波技术、高速…     

CO2激光器治疗皮肤性病的应用体会

1　临床病例及常见术后反应病例资料。汉中市中医医院皮肤性病科从 1998年 12月～ 2 0 0 1年 12月共用激光治疗皮肤性病 6 30例。其中尖锐湿疣410例 (外阴 2 70例 ,外阴和阴道 6 5例 ,外阴、阴道和尿道 5 0例 ,肛周及直肠 2 5例 ) ;直肠息肉 8例 ;宫颈息肉 10例 ;宫颈糜烂 5 0     

实验动物瘢痕模型经90Sr照射后超微结构的变化

目的 :观察实验动物微型猪瘢痕模型经90 Sr照射后的超微结构改变 ,从形态学角度探讨90 Sr防治瘢痕的作用机制以及最有效治疗时间和剂量 ,为临床应用提供形态学基础。方法 :采用西双版纳微型猪 ,于面部、背部两侧制作 1cm× 2cm、深达皮下组织的创口数个 ,随机分为实验组和对照组。实验组于术后 1周用90 Sr敷贴器照射 ,剂量分别为 2 0 0、4 0 0、6 0 0、80 0、1 0 0 0、2 0 0 0、4 0 0 0cGy。然后在照射后 1 ,3,7,1 1周 (即术后 2 ,4 ,8,1 2周 ) ,分别切取对照组和实验组的瘢痕组织 ,进行透射电镜 (TEM)观察。结果 :小、中剂量 ( 2 0 0～ 6 0 0cGy) 90 Sr显著促进伤口毛细血管和成纤维细胞增生 ,成纤维细胞表现为数量多 ,体积大、粗面内质网增多并扩张 ,胶原纤维排列致密 ;大剂量 ( 80 0～ 2 0 0 0cGy) 90 Sr照射能显著抑制成纤维细胞增生 ,表现为数量少 ,体积小 ,粗面内质网欠丰富 ,核异染色质丰富 ,胶原纤维排列稀疏。结论 :小中剂量90 Sr照射能促进成纤维细胞合成胶原纤维 ,从而促进伤口愈合 ,临床上可在伤后早期进行照射 ,剂量为 2 0 0～ 6 0 0cGy ;大剂量90 Sr照射可抑制成纤维细胞合成胶原纤维的能力。为防治瘢痕过度增生 ,临床上可在伤口愈合后进行照射 ,剂量为 1 0 0 0～ 2 0 0 0cGy。     

紫外线氦氖激光预防皮肤软组织创伤术后感染50例

1　资料与方法临床资料 :创伤患者 5 0例均来源于本院急诊科 ,年龄 10～ 6 0岁 ,上肢创伤 2 5例 ,下肢创伤 2 0例 ,全身多发性创伤 5例 ,患者多在创伤后 1～ 6小时内入院诊治。治疗方法 :患者首先在急诊科注射ＴＡＴ抗毒血清并行常规清创缝合术 ,术后第一天采用冷光紫外线机 ,波长 5 3 7ｎｍ ,灯距 1ｃｍ ,视伤口情况照射剂量为 5～ 10个ＭＥＤ ,隔日 1次 ,递增 30 % ,2次后改用低功率氦氖激光机 ,波长 6 32 8ｎｍ ,输出功率 2 0ｍＷ ,光斑直径 3ｃｍ ,功率 2 83ｍＷ ,能量密度 1 9Ｊ/ｃｍ2 ,视病灶大小分区照射 ,距离 70ｃｍ ,每区 10分…     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

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.     

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.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

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.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.