Responses of upper layer of northern South China Sea to two locally-generated tropical cyclones

应用Topex/Poseidon卫星高度计海面高度距平(SSHA)资料以及TMI的逐日海表温度数据,对两个局地生成的热带气旋(1999年台风LEO和2000年台风WUKONG)引起的南海北部海洋响应过程进行研究。结果表明,在热带气旋影响下,海面高度显著降低,SSHA平均减少30cm,流场上出现气旋型环流,海表温度显著降低,降低幅度为2℃左右,在其尾迹上出现冷涡;相对于降温过程,海表温度的恢复过程非常缓慢;热带气旋强度突变或移行较缓时易引起海洋的强烈响应,这种响应的空间和时间尺度都较大,持续时间至少1周,发生响应的海域范围也很广,甚至可以跨越3个纬度的距离。Responses of upper layer of the northern South China Sea to two locally-generated tropical cyclones have been studied by using the data derived from Topex/Poseidon altimeter and SST data from TRMM Microwave Imager(TMI).The two tropical cyclones are typhoon LEO from April 27th to May 2nd in 1999 and typhoon WUKONG from September 5th to September 10th in 2000.The following results are obtained.The sea surface height decreased and a geostrophic current appeared under the influence of the tropical cyclones.SST decreased apparently and there were cold eddies in the wakes of the tropical cyclones.Compared with the process of SST decreasing,it took longer time,about one week,for SST to recover.The sea surface height tended to show an intense response when there were abrupt changes in the intensity of the tropical cyclones or when they moved slowly.These responses appeared to have large spacial and temporal scales.国家自然科学基金资助项目(40576015,40576015);; 中国海洋大学物理海洋学教育部重点实验室开放课题(200304

Z-十八碳-9-烯-丙磺酰胺对糖尿病认知功能障碍小鼠学习记忆功能的影响

探索新化合物Z-十八碳-9-烯-丙磺酰胺（N15）对糖尿病认知功能障碍（DACD）小鼠学习记忆功能的作用及机制。采用链脲佐菌素（STZ）连续小剂量腹腔注射以及高脂高糖加STZ诱导2型糖尿病小鼠模型,N15(50和100mg·kg-1·d-1)连续灌胃给药6周,于给药末期进行跳台、避暗以及Morris水迷宫测试以评价小鼠学习记忆功能;对海马内葡萄糖和乳酸水平进行测定;通过realtimePCR测定海马内突触成长相关蛋白-43（GAP-43）、突触素（SYN）、脑源性生长因子（BDNF）和神经营养因子-3（NT-3）m RNA的表达。结果表明,N15可显著改善模型小鼠学习记忆能力,降低海马内葡萄糖和乳酸含量,显著上调海马内GAP-43、SYN、BDNF和NT-3 m RNA表达水平。上述结果表明,新型化合物N15具有改善糖尿病认知功能障碍的作用,其机制可能与增加海马内突触生长相关因子和神经营养因子表达相关。福建省教育厅资助项目(JAT160583

应用调整的膳食平衡指数评价厦门市区成年居民膳食质量

目的利用调整的中国膳食平衡指数(dbI-07)综合评价厦门市城区18~65岁居民膳食质量,为开展营养干预提供依据。方法采用多阶段分层整群抽样方法于2010年10—12月对厦门市区6个社区居委会成年居民进行调查,采用连续3天24 H回顾法对其中的520人进行了膳食调查,采用dbI-07的评分方法评价厦门城区成年居民膳食质量水平。结果被调查的厦门市城区成年居民的膳食质量处于中度失衡状态,摄入不足和摄入过量并存;女性的摄入不足程度高于男性;各年龄段中,40~50岁人群摄入不足程度最高,摄入过量程度最低。结论被调查的厦门市城区成年居民水果、奶类及豆类摄入不足,肉类、食用油及盐类摄入过量;成年居民的主要膳食模式为A模式,且A模式反映了膳食中摄入不足与摄入过量的问题均较少,为最优模式。中央财政转移支付地方项

木质生物质催化热解制备富烃生物油研究进展

生物油是木质生物质等原料经过热解获得的绿色产物,富含多种化学和生物活性物质,在石油替代方面具有发展潜力。生物质催化热解技术是制备高品质生物油的主要途径,但由于生物油含氧量比较高、目标产物选择性比较低、催化剂易结焦失活,限制了其应用。笔者从木质生物质热解机理及其反应途径、催化剂(金属氧化物、金属盐类、微孔催化剂、介孔催化剂)及其催化热解转化机理与产物调控机制、供氢试剂(四氢化萘、甲醇、废旧塑料、废弃油脂及其他供氢试剂)及其共催化热解转化机理等方面综述了木质生物质催化热解制备高品质生物油的进展,概述了催化热解过程中生物油的热解特性、产物组成以及转化机理,并对存在的问题及其解决方案进行了分析,展望了未来的发展方向,以期为木质生物质的高效转化利用提供依据和参考。国家自然科学基金(31670599,31870570);;厦门大学闽江学者特聘教授科研启动项目;;国家林业局“948”项目(2013-4-08);;云南省教育厅项目(ZD2014012,2018JS325

Research Progresses on Nutrient Quality of Rice Grain and Molecular Breeding Approach

Corresponding author, zjhym@ public xm f j cn[中文文摘]本文综述了稻米营养品质 (蛋白质、赖氨酸和微量营养素 )的经典遗传学和分子遗传学、分子育种的研究现状 ,并对利用分子标记辅助育种方法提高稻米营养品质作了展望。[英文文摘]This paper reviewed the classical and molecular genetic research progresses on nutrient qulity (including protein, lysine and micronutrient) of rice grain and its molecular breeding, furthermore, the molecular markerassisted breeding strategy for nut rient quality improvement was put forward

Research Progresses on Appearance Quality of Rice Grain and Strategies for its Molecular Improvement

Corresponding auther, [email protected] j.cn[中文文摘]本文综述了稻米外观品质 (长、宽、长宽比和垩白 )的经典遗传及分子遗传研究状况 ,归纳列举了已定位的外观品质性状的QTLs,提出了稻米外观品质改良的分子策略[英文文摘]This paper has review ed the classical and molecular genetic research progresses of rice appearance quality,which including traits of grain length, grain width, length- width ratio and chalkiness, and compared the QTLs conferring these traits which was detected by deferent labs using deferent kind populat ions.The authors have put forward the molecular strategy for appearance quality improvement.国家863项目(2002AA211091)及(2001AA211091)资

Chemical Modification of the Glycerol Dehydrogenase by Divalent Metal Ions

甘油脱氢酶(gdH)可以催化甘油生成二羟基丙酮.为了进一步探索gdH的活性结构中心,提高gdH的活性,用Mg2+、Mn2+、bA2+、CA2+、zn2+、Cu2+、Sr2+、nI2+、Cd2+和CO2+等10种金属离子对gdH进行活性中心金属离子置换修饰,筛选出具有修饰效果的离子为Mg2+、Mn2+和bA2+,修饰后其最大酶活力分别是初始酶活力的3.4,2.0和4.7倍.通过均匀设计对3种金属离子的修饰条件进行了优化,优化后测定的酶活力分别是未修饰gdH酶活力值3.17 u/Ml的14.9,11.3和12.4倍,极大地提高了gdH的酶活力.Glycerol dehydrogenase(GDH) can catalyze the interconversion of glycerol and dihydroxyacetone.In order to improve the activity and explore the active central site of GDH,10 kinds of metal ions such as Mg2+,Mn2+,Ba2+,Ca2+,Zn2+,Cu2+,Sr2+,Ni2+,Cd2+and Co2+ were used to do chemical modification on GDH.The results approved that the activity of GDH was significantly increased by Mg2+,Mn2+ and Ba2+ while the special activity of GDH was 3.4,2.0 and 4.7 folds respectively of the control′s after modification.Meanwhile,the activity effects of Mg2+,Ba2+ and Mn2+ on GDH showed that the GDH was successfully modificated by Mg2+,Ba2+ and Mn2+.The modificated condition was optimized with the uniform design.Compared to the original activity of GDH 3.17 U/mL,the activity of GDH modified by Mg2+,Ba2+ and Mn2+ was improved separately as 14.9,11.3 and 12.4 folds after optimization.国家高技术研究发展计划(863)项目(2006AA020103);福建省高校产学合作科技重大项目(2010H6023