Abundance and production of bacteria and their correlations with environmental factor

以2014年8月南海北部海水样品为研究对象,利用平板计数法和流式细胞仪计数法对南海北部表层和垂直海域可培养细菌和细菌总数分布状况进行研究,对细菌; 生产力进行测定,并结合环境因子进行相关性分析。结果表明:珠江口到南海北部海域,水平方向可培养细菌总数变化范围是3.70*10~2 ~; 1.42*10~3 CFU/mL,细菌总数变化范围是5.12 * 10~5 ~1.61 * 10~6; cells/mL,细菌生产力的变化范围是0.03 ~0.40 mg/m~3/h;垂直方向上可培养细菌变化范围是1.08 *10~3 ~9.00; *10~3 CFU/mL,细菌生产力变化范围是0.01 ~0.08; mg/m~3/h,其中表层海水中的细菌生产力明显高于底层。与环境因子相关性分析表明,水平方向上,影响南海北部表层海水细菌总数和细菌生产力的主要因; 素是温度、盐度、硝酸盐(NO_3-N)、硅酸盐(SiO_3-Si)、亚硝酸盐(NO_2-N)和磷酸盐(PO_4-P)(P<0.05);垂直方向上; ,影响南海北部可培养细菌总数的主要因素是NO_2-N(P<0.05),影响细菌生产力的主要影响因素是温度和盐度(P; <0.05)。可见,南海北部表层海水中细菌总数高于可培养细菌总数2; ~3个数量级,表明该海域表层海水存在大量不可培养细菌;细菌的生命活动在海水表层相较底层更为活跃。Distribution of abundance and production of bacteria and their; correlations with environmental factor were investigated, using plate; count method and flow cytometry, in the surface and vertical waters of; the northern south China sea in August 2014. The cultivable bacterial; abundance ranged from 3.70 * 10~2 CFU/mL to 1.42 * 10~3 CFU/ mL, the; total bacterial abundance ranged from 5.12 * 10~5 cells/mL to 1.61 *; 10~6 cells/mL and the bacterial productions varied from 0.03 mg/m~3/h to; 0.40 mg/m~3/h in horizontal distribution. In vertical distribution, the; cultivable bacterial abundance ranged from 1.08 * 10~3 CFU/mL to 9.00 *; 10~3 CFU/mL and the bacterial productions varied from 0.01 mg/m~3/h to; 0.08 mg/m~3/h, respectively. The correlation analysis results showed; that the environmental factors affecting the abundance of total bacteria; and bacterial productivity included temperature, salinity,; nitrate(NO_3-N),silicate (SiO_3-Si), nitrite (NO_2-N),and phosphate; (PO_4-P) (P<0.05). NO_2-N was the main influencing factor to cultivable; bacteria abundance (P < 0.05), while bacterial productivity was highly; correlated with temperature and salinity in vertical distribution of; northern south China sea (P < 0.05). The total bacterial abundance was 2; ~ 3 orders of magnitude higher than cultivable bacteria, suggesting that; there were many uncultured bacterium in surface water of northern south; China sea and bacterial activities in the surface maybe more active than; in the bottom.全球变化与海气交互作用; 国家重点研发计划全球变化及应对专项; 海洋公益性行业科研专

福建省信息经济学学科发展报告

信息经济学是信息科学的一个分支学科,是一门研究信息的经济现象及其运动变化特征的科学。该文从信息经济学学科和实际发展两个角度,梳理国内外信息经济学科发展现状,分析福建省信息经济的发展趋势,重点阐述福建省信息经济技术研发、平台建设、产业发展以及相关政策措施等方面的进展,并针对福建省信息经济发展存在的问题,提出相应的对策建议

Occurrence and distribution of organotin in seawater of Xiamen Bay

[摘要]：利用固相萃取气相色谱火焰光度检测(SPEGCFPD) 对厦门海域表、底层海水中的有机锡化合物进行了 分析检测。其中表层海水中检出的有机锡化合物以二丁基锡( DBT ) 为主, 底层海水中以三丁基锡( T BT) 为主, 且 TBT 的浓度显著高于表层水。表层海水中总有机锡浓度在129&#56256;1 4 826 8 ng ( Sn) L- 1 之间, 底层海水则分布在 321 6 1 9545ng ( Sn) L- 1 之间。结果显示, 厦门港内及同安湾附近海域水体中的有机锡浓度远高于九龙江口 及厦门西南海域, 这与厦门海域船舶活动和网箱养殖密切相关。通过对鼓浪屿站点表层海水中有机锡化合物15 h 的连续监测, 推测光照对水体中有机锡的降解影响显著。[Abstract]:Organot in compounds in the surface and bot tom w ater samples f rom the Xiamen Bay w ere collected and analyzed using SPEGCFPD ( So lio l Phase Ext ract ion Gas Chromatography Flame Photometric Detection) . Dibut ly ltin ( DBT) and Tributy ltin ( T BT ) w er e the dominant or gano tin compo unds in the surface and bo ttom w ater respect ively, and the co ncent ration of TBT in the bot tom w ater w ere sig nif icantly hig her than that in the surface w ater . The concentr at ions of org anot in compo unds rang ed betw een 1291 and 48268ng ( Sn) L- 1 in the surface w ater and betw een 3216 and 19545ng ( Sn) L- 1 in the bo ttom w ater. The highest org anot in compound level w as found near the Xiamen Harbor and the cage cultur e area of the Tongan Bay , and the low est level in the Jiulong estuary and in the so uthw est w aters of Xiamen Bay, sug gest ing that the org anot in contaminat ion in the Xiamen Bay is clo sely correlated w ith shipping act ivity and marine aguicultar e. It is deduced that photoly sis due to sunlig ht may be the major way fo r org anot in compounds to degr ade in sea water.国家自然科学基金项目( 40476048

机构知识库建设机制初探

介绍了在开放获取的大环境下，机构知识库的概念及意义；重点探讨了机构知识库的机制建设中面临的问题和挑战，用机制保证机构知识库的建设和运营成功

化学热泵中氨盐吸附工质对的研究进展

对化学热泵中的氨盐吸附工质对的研究做了系统的总结和分析，对应不同的热源，得出了相应的优良吸附工质对，同时分析了化学吸附的吸附机理，探讨了化学热泵的应用前景

机构仓储系统规划与政策框架研究

介绍了机构仓储的概念及规划与政策对于机构仓储建设的重要性；重点探讨了机构仓储的规划建设中的政策框架，包括，机构仓储建设的目标与作用、IR建设的组织保证、IR的建设模式、内容管理政策、服务模式、软件选择、IR的宣传推广和经费支持等方面

太阳能空调系统性能分析

本文对太阳能高效平板集热器与热水型一级溴化锂吸收式制冷机及热水型两级溴化锂吸收式制冷机组成的空调系统进行了计算分析。结果表明，在热水温度为８２－９５℃的范围内，太阳能一级溴化锂吸收式制冷系统具有较高的效率，但系统效率随热源温度的下降而急剧降低；在热源温度为６５－８２℃的范围内，太阳能两级溴化锂吸收式制冷系统具有较突出的优越性，系统效率几乎不随热源温的变化而变化。因此，两级溴化锂吸收式制冷机与太阳能平反集热器有比较好的匹配性能

Research on the Incentive Mechanism of Innovative and Entrepreneurial Talents in Guangxi

创新创业是以市场需求为导向、相互作用的过程,创新创业人才内涵的确定宜宽不宜窄。作为欠发达地区的广西,其创新创业人才激励机制是内部激励与外部激励实现良性互动的过程。研究表明:广西人才市场需求的产业和行业分布与广西"十三五"规划的产业和投资方向吻合,其创新创业人才在第二、第三产业比重增大。虽然广西创新创业人才激励政策取得一定绩效,但是从其政策激励效果、组织管理和信息沟通体系、保障体系、教育及其人才队伍建设等方面看仍需完善。广西应建立引人、用人、留人的良好机制,实现人才的组织、信息沟通、智库建设的"一站式"服务,从风险担保、资金保障、社会保障、人才服务等方面加强其保障体系建设,并深化改革,提高教育质量和教师队伍建设水平。Innovation and entrepreneurship is based on the market demand as the guidance and interaction between them at the same time,which the determination of the connotation of talent should be wide.As a less developed region,the incentive mechanism of innovative and entrepreneurial talents in Guangxi that is the result of the positive interaction between internal and external incentives.The research shows that the talent market demand of industrial and industrial distribution is consistent with the13th Five-Year industrial Plan and investment direction of Guangxi,the innovative talents in the proportion of second,the third industry increases,and its innovative and entrepreneurial talents in the second and third industry proportion increased.Although the incentive policies of innovative and entrepreneurial talent in Guangxi has made some performance,but its policy incentive effect,organization,management and communi cation systems,security systems,education and talent-building aspects still need to be improved.Therefore,Guangxi may strengthen these aspects from creating a good mechanism to attract,use and retain people,the"one-stop"service to realize the organization of talents,information communication and the construction of think tank;strengthening the construction of the guarantee system from the aspects of risk guarantee,fund guarantee,social security and talent service,and fully deepen the reform,improve the level of education and the its team construction.2016年广西软科学课题“广西创新创业人才激励机制及政策研究”(桂科AB16450015