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冬油菜早熟品种生长发育特性研究

官春云,靳芙蓉,,董国云, 官梅,谭太龙

《中国工程科学》 2012年第14卷第11期页码 4-12

摘要：

研究选用19个冬油菜早熟品种和1个春油菜品种进行小区分期播种试验，探索南方冬油菜早熟品种的生长发育特性。结果表明，综合考虑播种期与单位面积产量，冬油菜早熟品种全生育期应控制在180 d左右；应选择春性、对光温反应较迟钝的早熟品种；播种期应安排在10月中下旬，这样既可防止早花，又可确保油菜在次年4月中下旬成熟；早熟品种的生育特性优于半冬性中熟品种，一般苗期约40 d，蕾苔期约70 d，开花期约40 d，成熟期约30 d；出苗-终花天数与出苗-成熟天数呈正相关(r≥0.90)。青海春油菜品种属春性、弱感光类型，可作冬油菜早熟品种应用，尤以苗期较长、蕾苔期与开花期较集中的品种为佳。

关键词：冬油菜早熟品种生长发育特性

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Study on combustion characteristics of blended coals

LI Yonghua, WANG Chunbo, CHEN Hongwei

《能源前沿（英文）》 2007年第1卷第1期页码 96-100 doi: 10.1007/s11708-007-0010-1

摘要： Power plants in China have to burn blended coal instead of one specific coal for a variety of reasons. So it is of great necessity to investigate the combustion of blended coals. Using a test rig with a capacity of 640 MJ/h with an absolute milling system and flue gas online analysis system, characteristics such as burnout, slag, and pollution of some blended coals were investigated. The ratio of coke and slag as a method of distinguishing coal slagging characteristic was introduced. The results show that the blending of coal has some effect on NO but there is no obvious rule. SO emission can be reduced by blending low sulfur coal.

关键词： combustion capacity variety blended burnout

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Cloning of human XAF1 gene promoter and assay of its transcription activity in a variety of cell lines

Qiong CHEN, Qing YU, Yuhu SONG, Peiyuan Li, Ying CHANG, Zhijun WANG, Lifeng LIU, Wei WU, Jusheng LIN

《医学前沿（英文）》 2009年第3卷第2期页码 148-152 doi: 10.1007/s11684-009-0032-7

摘要： To investigate the regulation of tumor suppressor XAF1 gene expression in digestive system cancers, we studied XAF1 gene promoter transcription activity and mRNA level in digestive system cancer cell lines (human hepatoma cell line HepG2, human colon cancer cell line LoVo, and human gastric cancer cell line AGS) and nontumor cell lines (human embryonic liver cell line L02 (L02 cells) and human embryonic kidney 293 cells [HEK293 cells]) as controls. 1395-bp-promoter fragment of XAF1 gene was amplified by polymerase chain reaction (PCR) and cloned into pGL3-basic vector and pEGFP-1 vector to assay its promoter transcription activity. The plasmids were transfected into a variety of cell lines by lipofectamine 2000. The promoter transcription activity was determined by dual-luciferase report assay, and enhanced green fluorescent protein (EGFP)-positive cells were detected by fluorescence microscope. The expression of XAF1 mRNA in HEK293 and L02 were significantly higher than that in any of the three digestive system cancer cell lines. The dual-luciferase reporter assay showed that the promoter transcription activity in digestive system tumor cell lines transfected with pGL3-XAF1p promoter was apparently lower than that of both HEK293 and L02 cells. Expression of green fluorescent protein (GFP) under the control of XAF1 promoter in the three digestive system cancer cell lines was lower than that of both HEK293 and L02 cells. The activities of pGL3-XAF1p in the three digestive system cancer cell lines after treatment with heat stress were significantly lower than those in the unstressed cells. The results suggested that remarkably down-regulated XAF1 mRNA expression in digestive system cancer cell lines may be due to loss of transcription activity of XAF1 promoter.

关键词： gene X-linked inhibitor of apoptosis protein associated factor-1 (XAF1) promoter transcription regulation

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我国果树业生产现状和待研究的问题

束怀瑞

《中国工程科学》 2003年第5卷第2期页码 45-48

摘要：

介绍了我国果树资源及果树产业、科研当前水平；阐述了有关果业发展拟研究的五个问题：（1）果树传统品种组群与现代化生产及专业化；（2）果树发展与生态环境建设；（3）重视果树根系研究；（4）果品加工发展要加速研究与中试，加工产业发展要注意科学进程和大、中、小企业结合；（5）建立果品优质生产工程的技术体系。具体包括：品种组合与专业化，“世界品种”，名特优品种的不断选育，无公害基地的环境保护，根系研究对持续发展和提高产量品质的潜力，营养基因型根系，生根基因，建立质量工程技术体系，果品加工业的逐步进程等。

关键词：果树资源品种组合果树根系果品加工果树优质工程技术体系