肥大细胞电镜半薄切片染色方法

用7种不同的染色方法对环氧树脂包埋的大鼠空肠粘膜组织半薄切片中的肥大细胞进行染色和定位.光镜观察结果显示,盐酸甲苯胺蓝染色法简便快速,着色效果良好,适于肥大细胞半薄切片快速定位;硫堇、姬姆萨和中性红染色显示肥大细胞颗粒清晰,也可用于肥大细胞的观察与定位.     

微波在环氧树脂包埋半薄切片染色中的应用

微波在环氧树脂包埋半薄切片染色中的应用杨传红１赖晃文１唐庚云１赖日权２（广州军区广州总医院医学实验科１，病理科２，广州５１００１０）Ｅｐｏｎ８１２包埋的半薄切片进行光镜染色多数用盐基性染料如美蓝、甲苯胺蓝、结晶紫、硫堇和碱性品红等无需脱脂的单色染色法...     

透射电镜神经组织制样包埋剂比较

为探讨两种常用包埋剂Epon 812和Eponate 12对神经组织透射电镜样品的影响,本文采用多聚甲醛-戊二醛溶液对wistar大鼠进行全身灌流固定后,取材海马、脊髓及坐骨神经,按常规透射电镜样品技术制作超薄切片.电镜观察显示,经Eponate 12包埋后的样品,在切片的透明度及超微结构的清晰度上均优于Epon 812包埋的超薄切片样品.由于Eponate 12的浸透效果好,有效地避免了有髓神经纤维髓鞘上出现孔洞结构的制样问题.本实验小组的实验结果表明:对于神经组织,尤其是周围神经组织的超薄切片样品,使用Eponate 12作为包埋剂,效果会更好一些.     

培养细胞凋亡的半薄与超薄切片的比较

细胞凋亡与细胞坏死在形态学方面有着显著的差别,通常电镜观察结果是证明细胞凋亡的最可靠的证据。我们认为细胞凋亡的半薄切片甲苯胺蓝染色更加简便、快速,且较准确。本实验采用地塞米松诱导Ｊｕｒｋａｔ细胞凋亡的模型,采用半薄切片的光镜观察及超薄切片透射电镜观察。结果表明,半薄切片可以初步判断凋亡细胞,透射电镜观察是确定细胞凋亡的直接证据,且方法稳定,结果可靠。     

栉孔扇贝（Chlamys farreri）外套膜两种肌纤维的电镜观察

有材料指出栉孔扇贝外套膜 (以下简称套膜 )内有两组肌肉 :一是放射肌 ;二是环状肌。有关这两组肌肉的类型、微细结构等可供查阅的资料并不多见。作者在检查标本时 ,注意到栉孔扇贝套膜肌纤维有两种 :平滑肌与横纹肌。现整理如下。材料与方法取成体栉孔扇贝套膜组织 ,按常规电镜术固定、包埋 ,经半薄切片定位作超薄切片 ,经铀和铅双重染色 ,ＪＥＭ 12 0 0ＥＸ透射电镜观察。观察结果1　半薄切片光镜观察套膜厚约 1ｍｍ ,两面覆盖单层上皮。上皮下各有一薄层平滑肌 ,两层平滑肌之间为密集的大块肌组织。有的标本可清楚地看出为横纹肌纤维 ,有…     

Fabry病肾脏的超微病理研究

结合临床资料对4例Fabry病进行光镜、电镜观察与分析,探讨Fabry病肾脏的超微病理变化及电镜在其早期诊断中的作用。光镜观察显示肾小球有轻微或呈不同程度局灶节段硬化,在肾小球脏层细胞和肾小管上皮细胞胞质内可观察到数量不等的圆形空泡。这些空泡在半薄切片甲苯胺蓝染色后呈清晰的蓝染颗粒。电镜下可观察到一种特征性的嗜锇“斑马小体”或洋葱皮样小体。小体主要位于肾小球脏层细胞,也可出现在系膜细胞、肾小管上皮细胞、肾问质细胞以及血管内皮细胞和平滑肌细胞胞质内。早期病例只在部分肾小球脏层上皮细胞胞质内观察到嗜锇“斑马小体”。超微病理变化可反应疾病病变程度,特别是可为临床早期诊断提供重要的形态学依据。半薄切片甲苯胺蓝染色在Fabry病诊断中有一定价值。     

用常规透射电镜观察半薄切片——铀—铅—铜浸染技术的应用

在常规透射电镜中,超薄切片的厚度一般不超过0.1微米,否则就看不清样品的细节。但是,使用特殊的标本本浸染方法,选择性地对某些细胞结构染色,就可以在一般透射电镜下观察半薄切片。本实验采用铀—铅—铜浸染技术,选择性地染色一部分细胞器,在75—100KV透射电镜下观察0.25—0.5微米的半薄切片。结果表明,这一技术在超微结构研究中有一定实用意义。实验方法:用2％戊二醛灌注大鼠,取肝、肾、十二指肠和睾丸等组织,切成1立方毫米小块。组织块经缓冲液漂洗后,在42℃下先放入5％醋酸铀水溶液(PH3.5)浸染1小时,再在硝酸铅—硫酸铜—枸椽酸钠溶液中浸染1小时,然后在4℃下用1％饿酸后固定12小时、常规环氧树脂包埋,最后将组织块切成0.25—0.5微米半薄切片,在透射电镜下观察。     

直结肠癌相关抗原LEA分布的免疫光镜和电镜观察

本文主要应用免疫细胞化学技术对新研究成的直结肠癌细胞表面大分子抗原(LEA)在光、电镜下进行了较详细的定位观察。收集新鲜直结肠癌组织标本,冰冻切片后用常规ABC免疫酶标法染色,在光镜下观察,将CX1和CL187(人结肠癌培养细胞系)接种培养在置于培养皿内的盖玻片和载玻片表面,二、三天后分别用间接免疫荧光法和胶体金包埋前法免疫染色,前者在荧光镜下观察,后者以上升浓度的系列酒精脱水,EPON812原位包埋,经LKB超薄切片机切成8000A的切片,在日立H_600型透射电镜下观察。     

适合光镜和电镜诊断肾小球疾病的固定剂选择

目的：为了使已经石蜡包埋的肾穿组织脱蜡后进行电镜观察,关键是选择适当的固定剂。方法：在石蜡包埋前,肾穿组织分别用甲醛、戊二醛及戊二醛、锇酸双固定。根据光镜和电镜观察结果,选择能兼顾光镜和电镜的固定剂。结果：甲醛固定不能有效保存肾穿组织的超微结构,锇酸的固定能有效地保存超微结构,但严重影响了光镜切片的染色;而戊二醛与甲醛相比,较好地保存了肾穿组织的超微结构,同时又不影响光镜切片的染色。结论：在石蜡包     

塑料切片与电镜半薄切片多色性染色方法

塑料切片与电镜半薄切片多色性染色方法郭淑华李海伦（陕西省人民医院电镜室，西安７１００６８）多年来我室用缓冲液配制异染性甲苯胺兰近沸点染色，操作方法简单快速，不同的组织表现为多色性，细胞结构细致清晰。不但弥补了超薄切片范围局限的不足；而且在科研中应用此...     

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.