氦氖激光加湿性伤口敷料治疗儿童创伤后遗慢性伤口的疗效观察

目的:探索氦氖激光加新型伤口敷料在儿童创伤后遗慢性伤口治疗中的效果及应用.方法:对2010年6月至2012年6月共148例慢性伤口儿童分为两组,治疗组采用氦氖激光加新型湿性敷料换药治疗,对照组采用传统敷料常规换药治疗.结果:治疗组平均换药治疗时间13±3.5天,对照组平均换药治疗时间24±6.5天,两组间平均换药治疗时间比较差异有显著性,P＜ 0.05.结论氦氖激光加新型湿性伤口敷料用于儿童慢性伤口换药可以缩短治疗时间,治疗效果优于传统敷料换药方法.     

氦氖激光在治疗伤口愈合延迟中的应用不良的临床观察

目的：观察低能量氦氖激光在治疗胸腹部术后伤口愈合不良的临床作用。方法：用低能量氦氖激光照射胸腹部术后愈合不良的伤口创面15例,促进伤口创面肉芽组织生长及伤口创面愈合。结论：低能量氦氖激光照射刺激组织增生和促进创面愈合,从而缩短伤口愈合的时间。     

三乙醇胺乳膏湿敷创伤伤口的疗效评价及其愈合计分的可行性分析

目的 观察三乙醇胺乳膏湿敷减轻创伤伤口的疼痛和促进愈合效果,探讨愈合计分用于评价创伤伤口疗效评价的可行性.方法 入选60 例患者按照随机数字表法随机分为观察组和对照组各30 例,观察组采用三乙醇胺乳膏涂抹加保湿覆盖,对照组采用藻酸盐敷料覆盖.观察比较治疗后第3、第7、第14、第21 天伤口疼痛计分、伤口愈合计分、伤口面积缩小率、治愈率和愈合时间.结果 两组治愈率100%,愈合时间比较差异无统计学意义(P>0.05).两组治疗后21 d 内伤口疼痛计分、愈合计分随治疗时间增加均呈明显下降趋势(P＜0.05),伤口面积缩小率也增加明显(P＜0.05).结论 伤口愈合计分用于创伤伤口疗效评价是客观可行的综合指标,三乙醇胺乳膏湿敷用于创伤伤口,其减轻伤口疼痛、促进伤口缩小和缩短愈合时间的效果优于单用藻酸盐敷料,使用安全便捷.     

负压封闭引流术在儿童严重创伤修复应用中的护理

目的：探讨应用负压封闭引流技术在治疗儿童严重创伤创面修复中的护理。方法：对我科2008年7月-2010年3月收治的15例应用负压封闭引流技术治疗儿童严重创伤创面修复的患者进行护理观察。结果：15例创伤创面救治随访2个月至18个月。1例因全身金黄色葡萄球菌感染败血症后并发慢性骨髓炎,其余14例创面经二期韧厚植皮或皮瓣转移等手术后创面愈合良好。结论：手术后维持患者适当的体位,持续恒定的负压吸引.密切的护理观察和引流管的管理是护理的关键环节。     

2940nm饵点阵激光在面颈部酸烧伤治疗中的应用观察

探讨2940nm饵点阵激光早期剥脱酸烧伤痂皮与单纯药物治疗的疗效差异。2012年6月~2014年9月笔者单位收治的27例面颈部小面积点片状酸烧伤患者为临床资料。将入选的103个创面随机分成激光剥脱治疗组(14例,54个创面)和单纯药物治疗组(13例,49个创面),激光剥脱治疗组采用饵点阵激光行痂皮剥脱后富林蜜伤口愈合凝胶常规每日换药;单纯药物治疗组行富林蜜伤口愈合凝胶常规每日换药,两组病例均置红外线烤架治疗。经治疗后对两组创面愈合时间,瘢痕发生率进行比较分析。激光剥脱治疗组创面愈合时间明显短于单纯药物治疗组(P<0.05),创面愈合后3个月进行随访,瘢痕的发生率明显低于单纯药物治疗组(P<0.01)。面颈部小面积点片状酸烧伤早期使用2940nm饵点阵激光行痂皮剥脱治疗能缩短创面愈合时间,减轻瘢痕的发生率。     

显齿蛇葡萄黄酮提取物促光电损伤修复的研究

为明确显齿蛇葡萄中双黄酮活性成分(二氢杨梅素和槲皮素提取物)促进光电皮肤损伤修复的效果,以点阵二氧化碳激光分别干预大鼠皮肤、体外培养的人皮肤成纤维细胞及角质形成细胞以建立光电皮肤损伤模型,采用二氢杨梅素和槲皮素提取物干预大鼠皮肤创面或损伤细胞,然后评估大鼠皮肤创面愈合情况和炎症因子水平,成纤维细胞活性氧水平以及角质形成细胞迁移功能。结果表明,二氢杨梅素和槲皮素提取物可以降低激光损伤后皮肤成纤维细胞中活性氧及创面组织中炎症因子白介素-6和肿瘤坏死因子-α水平,促进激光损伤后皮肤角质形成细胞迁移,加速激光损伤后皮肤创面的愈合。研究表明,显齿蛇葡萄中双黄酮活性成分(二氢杨梅素和槲皮素提取物组合)通过抑制点阵二氧化碳激光损伤后皮肤炎症反应,促进皮肤创伤修复。     

半导体激光结合红外线照射治疗促进植皮术后伤口愈合疗效观察

目的:观察半导体激光结合红外线照射治疗促进植皮术后伤口愈合的效果。方法:1.本科室植皮术后伤口不愈合患者66例,其中分成治疗组33例,对照组各33例。2.治疗组:常规换药先给予红外红照射,距离患处20～30cm,15-20min/次,1次/d。续予半导体激光治疗仪局部照射溃疡10～15min/次,1次/d,10次为1个疗程。对照组:常规消炎伤口换药。评估:治疗10天后采用肉眼观察创面分级发。结果:治疗组治愈33例显效33例。有效率为100%。对照组治疗33例,显效21例,无效12例,有效率为64%.两组差异有显著性,结论:红外红治疗仪+半导体激光治疗仪辅助照射感染伤口和溃疡,能明显促进伤口或溃疡愈合。     

980nm/1064nm双波长半导体激光皮肤焊接

提出将980 nm和1064 nm半导体激光组合应用于皮肤组织伤口焊接,通过肉眼观察、病理学检测以及张力测试等方法对比了双波长激光焊接与传统缝线术的缝合效果。同时,利用热电偶温度测试系统在体测量了激光焊接皮肤切口过程中的组织内部温度,研究激光焊接效果与组织温度之间的关系。结果表明,980 nm和1064 nm激光同时以0.5 W连续输出,功率密度为15.92 W/cm2,每点照射时间为5 s模式组合焊接时,伤口缝合效果与传统缝线术相比具有伤口闭合迅速、愈合快、伤口表面平整、异物反应小、伤口闭合紧等优点。由此可见,双波长激光组织焊接是一种有效的伤口闭合方法,有待进一步研究以便应用于临床。     

激光照射伤口愈合效果初探

一九六九年美国Mester等人首次研究报道：小剂量He—Ne激光照射能促进组织修复，而且还认为这是激光所特有的生物刺激效应和免疫抑制效应所致。以后Lederer否定了组织修复是激光所特有的生物刺激效应和免疫抑制效应的结果。Hutuhenreiter和Kanan等人认为照射期不能导致伤口愈合速度加快，同时伤口愈合的各个阶段伤口病灶没有明显的有意义的效应。     

氦氖激光照射对大鼠皮肤烫伤愈合后期再创伤修复的影响

用波长为６３２．８ｎｍ的低强度氦氖激光以三种不同剂量对４０只大鼠，４０个皮肤烫伤创面照射，观测到；一，创面的愈合时间均较未照射激光的创面缩短。二停止照射后即行切除全皮的新创面愈合时间则较未照射激光的新创面出现延长。三，以上两项效果均与照射量有关；愈合过程中各阶段的愈合强度也有不同。初步认为低强度氦氖激光照射对大鼠皮肤烫伤的愈合有促进作用；对停止照射后即受到之新的开放性创伤有延迟愈合的抑制作用趋势；     

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.     

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.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.