The Response of Phytoplankton to Mesoscale Eddies in Western South China Sea

2011-09应用高效液相色谱分离技术并结合CHEMTAX软件研究了中国南海西部冷涡和暖涡区浮游植物的群落结构组成。结果表明,南海西部优势类群为定鞭金藻、聚球藻和原绿球藻。中尺度涡影响了总叶绿素A(CHl-A)的垂直分布和浮游植物群落组成,暖涡使叶绿素最大层下移,但冷涡并未使叶绿素最大层上移;同时,暖涡区定鞭金藻贡献量减少,原绿球藻和聚球藻贡献量增加,而冷涡区硅藻贡献量增加,聚球藻贡献量减少。中尺度涡并未显著影响南海西部浮游植物优势类群的优势地位,但其对水柱积分生物量的影响不同,暖涡区总叶绿素A显著增加,而冷涡区总叶绿素A无显著变化。High-performance liquid chromatography was used to quantify the pigments and CHEMTAX calculation program was applied to estimate the contribution of the phytoplankton groups in cold eddy and warm eddy in western South China Sea(SCS)during September,2011.The results showed that the dominant groups in western SCS were Haptophytes,Synechococcus and Prochlorococcus.Mesoscale eddies influenced the vertical distribution of total chlorophyll a and phytoplankton community structure.The depth of chlorophyll maximum deepened in warm eddy,but did not shallowed in cold eddy.In the meantime,the contribution of Haptophytes decreased but the Synechococcus and Prochlorococcusincreased in warm eedy,while the contribution of Synechococcus decreased but Diatoms increased in cold eddy.Mesoscale eddies did not significantly influence the dominance of the dominant groups.Total chlorophyll a significantly increased at warm eddy,while it did not change much at cold eddy.国家自然科学基金项目——典型海区基于功能群的浮游植物群落结构及其与颗粒有机碳输出的耦合(40925018

激光陶瓷的制备方法

本发明公开了一种激光陶瓷的制备方法，包括以下步骤：将分子式为MF2的氟化物粉体与分子式为ReFn的氟化物粉体按一定比例混合，作为反应原料；或者将分子式为Re:MF2的氟化物单晶粉碎后得到的粉晶作为反应原料；其中，M为碱土金属离子，Re为Mn2+和-或稀土离子，n＝2或3；将所述反应原料研磨、混匀、干燥后得到前驱体粉末；将所述前驱体粉末放入模具中，置于放电等离子烧结炉中，在真空环境或保护气氛下，升温至600℃～1100℃，保温0min～60min，冷却后得到烧结体；将所述烧结体打磨、抛光后，得到离子掺杂的碱土金属氟化物激光陶瓷。该方法过程简单，容易控制，有助于实现工业化的批量生产；同时，降低了烧结温度和能耗，缩短了烧结时间和制备周期

Change of biochemical component content of tissue and organ during the spermary development of Marsupenaeus japonica

本实验采用酶学和现场采样等方法研究日本囊对虾精巢发育过程中精巢与肝胰腺的形态学和几种生化组分含量的变化,旨在说明海区自然状态下日本囊对虾亲虾生殖过程营养物质在组织器官中的消长与转移的情况。结果表明,台湾海峡海区自然状态下日本囊对虾精巢发育过程中,精巢指数从I期0.010±0.001~IV期0.017±0.002呈逐渐上升(P0.05)。葡萄糖、胆固醇和甘油三酯的含量(Mg/dl)变化情况分别如下:在精巢中,为14.85±5.40~4.75±3.17、7.69±2.47~16.46±6.79和15.85±4.56~36.78±8.12;在肝胰腺中,为10.95±2.60~22.24±5.76、27.12±9.11~202.62±77.26和42.87±13.39~116.99±24.57;在血淋巴中,为6.38±1.44~11.25±3.08、53.77±32.10~155.32±62.55和13.67±7.06~79.56±38.19。本文还就对虾精巢发育过程中,性腺和肝胰腺的形态变化,以及肝胰腺、血淋巴、精巢中葡萄糖、胆固醇和甘油三酯的含量的消长与转移的情况进行了详细的讨论。In this study,enzymatic,field sampling and other methods were used to study pancreatic morphology and several biochemical component content changes in spermary and liver of Marsupenaeus japonicus during the spermary development.It intended to illustrate in the natural state,the growth and decline and transfer condition of nutrition substances in the tissues and organs of Marsupenaeus japonica broodstock in reproductive process.The results showed that in the natural state of the Taiwan Strait waters,Marsupenaeus japonicus,testis index from the phase I 0.010 ± 0.001--IV period of 0.017 ± 0.002 was gradually increased(P0.05).Glucose,cholesterol and triglyceride levels(mg/dl) changed as follows: In the testis,is 14.85 ± 5.40 -- 4.75 ± 3.17,7.69 ± 2.47--16.46 ± 6.79 and 15.85 ± 4.56--36.78 ± 8.12;in the liver pancreas,is 10.95 ± 2.60--22.24 ± 5.76,27.12 ± 9.11--202.62 ± 77.26 and 42.87 ± 13.39 -- 116.99 ± 24.57;in the hemolymph,is 6.38 ± 1.44--11.25 ± 3.08,53.77 ± 32.10--155.32 ± 62.55 and 13.67 ± 7.06 --79.56 ± 38.19.This paper also showed that during the development of Marsupenaeus japonicus spermary,how gonad、pancreas and liver changeed in morphological area.The situations of rise and fall with the transfer in liver,pancreas,blood,lymph,testis glucose,cholesterol and triglyceride were also discussed in detail.福建省科技计划重点项目(2008N0040)资

页岩气井压裂液返排与生产阶段的压裂裂缝特征差异研究

水平井分段压裂是实现页岩气经济开发的关键技术,生产过程压裂裂缝闭合会对开采产生不利影响.由于生产动态数据误差较大且震荡严重,与渗流数学模型内边界条件不匹配,目前很少有基于生产动态数据分析来定量评价压裂液返排与页岩气生产阶段压裂裂缝特征差异的方法.为此,文章提出一种基于反褶积的量化评估返排与生产阶段压裂裂缝特征差异的生产动态数据分析系统新方法.首先,给出返排和生产阶段的渗流模型及其Laplace解.之后,利用压力反褶积算法分别对两阶段的生产动态数据进行归一化处理.并使反褶积计算的归一化参数调试与渗流模型计算的参数调试在特征曲线拟合过程中相互制约,分别解释出两阶段的裂缝半长及裂缝导流能力.最后,引入导流能力模量,对两阶段的压裂裂缝特征差异进行了量化评估.利用此方法对现场10口井的分析结果表明:本方法可以有效量化评估返排与生产阶段压裂裂缝特征差异;相比于返排阶段,生产阶段的裂缝导流能力下降了约两个数量级,裂缝发生了明显闭合.文章建立的分析方法对页岩气藏后期增产措施优化有重要参考价值

单光源3.2Tbit/s2080km实时相干传输试验

文章介绍了基于31.786Gbaud/s光收发模块实现的32×100Gbit/s信号速率、2 080km标准单模光纤的实时相干光传输试验,信号采用PM-QPSK（偏振复用四相相移键控）调制格式。信号光源为单个激光器产生的32路波分复用子光载波,频率间隔为32GHz,频谱效率达到3.11bit/s/Hz。信号传输2 080km后,采用20%的FEC（前向纠错）编码时,Q值仍有1.2dB的余量。此外,还研究了光滤波器带宽与OSNR（光信噪比）代价的关系。25h挂机试验结果显示,信号接收纠错前误码率在1E-2以下,表明该传输系统稳定可靠。该系统为国内首个单光源3.2 Tbit/s实时传输试验系统,对提升现有100Gbit/s商用光纤传输系统的传输效率有较大的指导意义