Effect of fibrin on expression of interleukin-6 in rat brain vascular endothelial cells

AIM:To investigate the kinetics of interleukin-6 (IL-6) protein and mRNA expressions in the co-culture of rat brain vascular endothelial cells(VECs) with fibrin. METHODS:The IL-6 concentration were measured by rat IL-6 ELISA kit and the IL-6 mRNA was measured by real-time PCR after development an in vitro model of in situ fibrin polymerization on rat brain vascular endothelial cells. RESULTS:Fibrin induced IL-6 expression. The IL-6 antigen concentration increased significantly in 1.0 g/L media group compared to the low dose fibrin group or control media group (P<0.01). Fibrin-induced IL-6 expression in rat brain VECs as early as 2 h post-fibrin stimulation, increased significantly at 8 h, keeping at high level till 24 h (P<0.05). Collagen did not induce IL-6 expression at 24 h. Real-time PCR analysis showed that IL-6 antigen increase in fibrin treated rat brain VECs was due to fibrin induced elevation of steady state mRNA expression. CONCLUSION:Fibrin is a potent vascular endothelial cell activator. It induces IL-6 expression in time and dose dependent fashions.     

威提特东非狼尾草种子生产技术的研究

比较了4种土壤类型和3种留茬高度对威提特东非狼尾草(Pennisetum clandestinum cv. Whittet)种子产量和质量的影响。结果表明:以单因素而言,生土处理和0.05 m留茬高度处理所获得的平均种子产量最高;两因素处理的结果表明,以生土和0.05 m留茬高度互作后所获得的种子产量最高,其种子产量达447kg/hm2;各土壤类型和不同留茬高度的处理对种子的质量影响差异不显著。     

论中国品牌猪肉产业战略格局的创建

本文就中国现代养猪所处的特殊历史时期对中国品牌猪肉产业战略格局作了充分分析,解析了以下五方面因素对未来市场的关键性影响：1）品种资源;2）场地环境;3）技术队伍;4）融资条件;5）战略胆识。最后,强调了中国品牌猪肉产业战略的可行性。     

Real-time Infrared Image Acquisitionand Processing System Based on PCI Bus

In the system of infrared imaging acquisition, it is necessary to improve data transfer to satisfy the characteristics of high speed and real time. So,this paper introduces PCI bus and PCI inerface to imaging acquisition. The protocol of data transfer of PCI local bus and the structure of PCI9050 are studied in detail, and the IRFPA data acquisition system are described based on the protocol of data transfer of PCI local bus. The system adopts frame buffer to make slow transmission between peripheral circuit and PCI bus.CPLD is also used as a master of logic time control?     

不同技术措施对降水利用和土壤养分的影响

研究了豫西丘陵旱作区不同技术措施对降水利用的影响,结果表明,不同技术措施对玉米生育性状、子粒产量、土壤含水量和降水利用具有积极作用。其中,玉米产量增产1.92%~20.51%,以秸秆覆盖+营养型抗旱保水剂处理增产效果最显著,增产15.38%~20.51%;其次为营养型抗旱保水剂处理,增产11.53%~14.10%。降水利用效率分别提高0.45~3.60 kg/(mm.hm2),其中,以秸秆覆盖+营养型抗旱保水剂处理最好,提高2.70~3.60 kg/(mm.hm2);说明合理的技术集成是提高降水利用的有效途径之一。化学节水技术以营养型抗旱保水剂处理效果最好。同时,合理的秸秆覆盖可以提高土壤耕层的氮、磷、钾和有机质含量,否则将导致有效钾和有机质含量的降低。     

利用重组自交系群体检测水稻耐铝毒数量性状基因座

利用Kinmaze / DV85 81个重组自交家系(RIL)作图群体,采用苗期单营养液水培鉴定方法,以相对根伸长量（RRE）作为耐铝毒性状的表型值,分析亲本和重组自交系群体对铝毒的耐性表现。利用Windows QTL Cartographer 1.13a软件共检测到5个耐铝毒QTLs,分别位于第1、5、8、9和11染色体上,各个QTL的贡献率在8.64%～18.60%之间,其