M2M energy saving strategy in 5G millimeter wave system

Telecommunication Systems - Machine to Machine technology has a broad application prospect in the 5G network, but there is a bottleneck in the energy consumption of intelligent devices powered by...     

Decreased CD10-positive granulocytes for the differential diagnosis of myelodysplastic syndrome

Myelodysplastic syndromes (MDS) are highly heterogeneous myeloid neoplasms, and a large number of patients are difficult to diagnose and classify by blood and bone marrow examination. As a surface marker of granulocyte, studies have shown CD10 can be used to define the degree of granulocyte maturation in MDS patients. However, whether it can be used for differential diagnosis of MDS and other hematological diseases remains inconclusive. To explore the value of CD10 for differential diagnosis of MDS, 60 newly diagnosed MDS, 20 aplastic anemia (AA) patients, and 35 iron-deficient anemia (IDA) patients were selected for this study. Bone marrow (BM) specimens were processed for surface marker analysis and labeled with pre-conjugated monoclonal antibodies. Stained cells were detected by flow cytometry. Our results indicated that CD10-positive granulocytes were significantly decreased in BM of MDS patients than AA and IDA patients, and the level of CD10-positive mature granulocytes was not associated with the clinical stages of malignancy. Receiver operating characteristic (ROC) areas under the curve (AUC) of CD10-positive granulocytes was 0.86 and 0.85, respectively, in MDS patients than the IDA group and AA group with good specificity and sensitivity. Further, CD10-positive granulocytes were increased after effective treatment. In conclusion, we found the decrease in CD10-positive granulocytes has a differential diagnostic value of MDS.     

氮化硅/石墨激光合金化涂层的组织结构与性能研究

为获得金属表面特别是高副接触金属表面含自润滑特性且具有高硬度耐磨特性的功能材料 ,研究了 45 # 钢表面激光合金化氮化硅 /石墨复合涂层的工艺方法、组织特征、界面形态及其形成机制 ,利用光学显微镜、扫描电镜和X射线能谱对所形成合金化层的元素分布和含量进行了分析 ,并对试样硬度进行了测定。结果表明 ,合金化层中元素Fe ,Co ,Si,C分布均匀 ;C含量达到了 15 6 9%,大部分以石墨的形式存在 ,具有一定的自润滑性能 ;但在形成合金化层的温度条件下 ,氮化硅分解严重 ;合金化层硬度提高的主要原因是Si Fe ,Co Fe固溶体的强化作用及高碳马氏体的生成和高硬度碳化物的存在。     

A Special Structure in Al-Mg-Li Alloy (01420) Weld Metal

A large quantity of laminated fine grain zones were observed in the Al-Mg-Li alloy weld metal by manual TIG, which was not found in ordinary Al alloy welds. The fine grain zone is formed because of the Al3(Zr,Ti) particles in the filler metal and the manual filling of filler metal in welding process     

浅议提高电除尘效率的对策和方法

介绍了电除尘器的发展现状,分析了影响电除尘器除尘效率的问题,提出了低压控制系统的自控改造方案,以提高自控水平和除尘效率。该方案实际应用之后,获得了较为理想的效果。     

Zr-2/Cr反应扩散研究

研究了Zr-2/Cr扩散偶在1023－1123K范围内的反应扩散，用扫描电镜观察反应宽度，用能谱仪（EDS）测定了反应层Zr,Fe和Cr沿扩散方向的浓度分布，研究了反应层的生长动力学，结果表明，反应层生长基本符合抛物经规律，生长过程受扩散控制，用Boltzman-Matano-Heumann模型计算了Cr在反应层Zr（Fe,Cr）2中的互扩散系数D，得到了互扩散系数D与温度的Arrhenius方程，由计算的扩散数据与Cr在Zr中形成稀固溶体时Cr的扩散数据比较可知，Cr在金属间化合物Zr（Fe,Cr）2中的扩散比在稀因溶体中的扩散快5个数量级。     

使用光纤放大器的频分复用光纤传输系统

报道了一个使用光纤放大器的两路非相干频分复用光纤传输实验系统。系统采用国产ＤＦＢ激光器作光源，用意大利生产的光纤放大器作在线放大器，用自制的光学谐振腔作光学滤波器和解复用器，采用ＦＳＫ调制制式，将１４０Ｍｂ／ｓ非归零伪随机码传输了５０公里，得到了很好的眼图。在频道间距为１０ＧＨｚ情况下，未观测到邻道干扰和光纤放大器的非线性现象。     

一种无线电引信杆试验升降装置

针对目前广泛使用的无线电引信杆试验升降装置的不足，提供一种先进、简单、实用的升降装置，此装置主要由一体化减速、制动电机和控制电路组成，具有体积小、可靠性高、成本低廉等优点，是解决无线电引信杆试验测试弹升降问题的较好方案。     

山羊绒/K-Ⅱ纤维伴纺针织纱的开发

文章主要介绍了K-Ⅱ纤维伴纺山羊绒生产高支羊绒针织纱的生产工艺，并探讨了生产过程中需要特别注意的问题与解决方法。实践证明，利用这种伴纺技术不仅提高了羊绒针织纱的纺纱支数，而且降低了生产成本，并改善了最终织物的风格，具有广阔的发展前景和良好的经济效益。