为满足我国航空发动机对高温钛合金的需求,开展了TC8-1钛合金铸锭及其大规格棒材的研制。结果表明,研制的820 mm TC8-1钛合金大型铸锭成分均匀、冶金质量良好。制备的130~200 mm大规格棒材的室温及高温力学性能、热稳定性能、持...为满足我国航空发动机对高温钛合金的需求,开展了TC8-1钛合金铸锭及其大规格棒材的研制。结果表明,研制的820 mm TC8-1钛合金大型铸锭成分均匀、冶金质量良好。制备的130~200 mm大规格棒材的室温及高温力学性能、热稳定性能、持久性能、蠕变性能和显微组织均符合技术标准要求,能够满足某型号发动机用材需求,填补了国内空白。同时测定了TC8-1钛合金的线膨胀系数、热导率等物理性能数据,为该合金的应用提供参考。展开更多
Back ground: Non-Hodgkin’s lymphoma (NHL) with its different subtypes is strongly related to Epstein Bar virus (EBV) infection mainly Burkitt’s lymphoma in Africa. Studies proved the role of EBV in tumor-genesis and...Back ground: Non-Hodgkin’s lymphoma (NHL) with its different subtypes is strongly related to Epstein Bar virus (EBV) infection mainly Burkitt’s lymphoma in Africa. Studies proved the role of EBV in tumor-genesis and linked it to prognosis and therapy of patients. Objectives: To determine the frequency of EBV in non-Hodgkin lymphomas using EBV latent membrane protein 1 (EBV-LMP1) immunohistochemical stain. Methods: This cross-sectional study was conducted at radio-isotope centre of Khartoum (2012-2014). A total of 75 cases of non-Hodgkin lymphoma paraffin embedded sections were stained for EBV LMP1 antibody. Data were analyzed by SPSS 16 and statistical cross linking of the results of immune staining with other data was done. Results: Out of 75 patients of non Hodgkin’s lymphoma (74.7%) were males. EBV-LMP1 Immune-staining was positive in (17.3%) with predominance of Burkitt’s lymphoma (33.3%), followed by diffuse large B cell lymphoma (17.9%). Conclusion: Burkitt’s lymphoma expressed the highest percentage of non-Hodgkin’s lymphoma positive cases (46.2%) out of the total (17.3%) positive cases. Different methods need to be used in studying Burkitt’s lymphoma expression of EBV and its effects on the treatment and prognosis of cases.展开更多
文摘为满足我国航空发动机对高温钛合金的需求,开展了TC8-1钛合金铸锭及其大规格棒材的研制。结果表明,研制的820 mm TC8-1钛合金大型铸锭成分均匀、冶金质量良好。制备的130~200 mm大规格棒材的室温及高温力学性能、热稳定性能、持久性能、蠕变性能和显微组织均符合技术标准要求,能够满足某型号发动机用材需求,填补了国内空白。同时测定了TC8-1钛合金的线膨胀系数、热导率等物理性能数据,为该合金的应用提供参考。
文摘Back ground: Non-Hodgkin’s lymphoma (NHL) with its different subtypes is strongly related to Epstein Bar virus (EBV) infection mainly Burkitt’s lymphoma in Africa. Studies proved the role of EBV in tumor-genesis and linked it to prognosis and therapy of patients. Objectives: To determine the frequency of EBV in non-Hodgkin lymphomas using EBV latent membrane protein 1 (EBV-LMP1) immunohistochemical stain. Methods: This cross-sectional study was conducted at radio-isotope centre of Khartoum (2012-2014). A total of 75 cases of non-Hodgkin lymphoma paraffin embedded sections were stained for EBV LMP1 antibody. Data were analyzed by SPSS 16 and statistical cross linking of the results of immune staining with other data was done. Results: Out of 75 patients of non Hodgkin’s lymphoma (74.7%) were males. EBV-LMP1 Immune-staining was positive in (17.3%) with predominance of Burkitt’s lymphoma (33.3%), followed by diffuse large B cell lymphoma (17.9%). Conclusion: Burkitt’s lymphoma expressed the highest percentage of non-Hodgkin’s lymphoma positive cases (46.2%) out of the total (17.3%) positive cases. Different methods need to be used in studying Burkitt’s lymphoma expression of EBV and its effects on the treatment and prognosis of cases.
