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.     

信永中和"登云股份IPO审计失败"探究

本文以证监会发布的针对信永中和及两名签字注册会计师的行政处罚决定书为切入点,结合深圳证券交易所、天眼查、巨潮资讯等网站公布的相关信息,从信永中和的具体审计过程,分析登云股份IPO审计失败的原因,原因主要在于基于业务需要未充分了解公司及其经营环境,贸然接受委托,缺乏应有的执业审慎,缺少了必要的审计程序,复核制度流于形式丧失了发现错误的最后机会。     

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。     

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。     

铅锌选矿厂废水回用研究

简述了铅锌选厂废水回用小型试验及工业试验情况，在基本上不改变工艺结构基础上改变药剂制度达到废水回用的目的，使选矿废水回用率达到80％，实现尾矿库废水零排放。     

沙袋充填度与稳定性的试验研究

沙袋筑坝在工程中愈来愈广泛的应用，需要解决的问题也很多，笔者对不同尺寸沙袋的充填度进行了讨论，提出了极限充填度和最佳充填度的概念；通过对不同尺寸充沙沙袋在水泥抹面和沙袋布为底面的水槽中所得的试验资料的分析，得出了充沙沙袋的失稳流速。