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14篇 您的检索式:作者名="Johnson Dan"
    题名 作者 年代 出处 被引量
1Relationships between vegetation and stomata,and between vegetation and pollen surface soil in Yunnan,Southwest China显示文摘Surface pollen and stomata of 61 samples collected in a study area ranging from tropical seasonal rainforest to oak forest(Quercus spinosa) in the Yulong Snow Mountain region in Yunnan,China,are used to distinguish vegetation communities.The results show that tropical seasonal rainforest(and mountain rainforest),south subtropical evergreen broad-leaved forest,and Quercus shrub are distinguished effectively from other vegetation types by analysis of surface pollen.The south subtropical evergreen broad-leaved forest,Pinus kesiya forest and evergreen broadleaf forest are distinguished effectively from other types of vegetation by pollen analysis.However,P.yunnanensis forest is not distinguished from other vegetation types,and P.armandii,P.densata forest and temperate deciduous conifer mixed forest are not distinguished.The over-representation of Pinus pollen is the main reason that these vegetation communities are not distinguished from each other.Conifer stomata analysis is an effective tool for identifying and distinguishing different types of coniferous forest,and this method performs well even with a small number of sampling points.SHEN HuaDong LI ChunHai WAN HeWen TONG GuoBang LIU JinSong DAN Johnson 2013Chinese Science Bulletin2013,58,15:12
2Growth characteristics of algae during early stages of phytoplankton bloom in Lake Taihu,China显示文摘Three treatments, sediment plus lake water (S+W), sterilized sediment plus lake water (SS+W), and sediment plus filtered lake water (S+FW), were recruited to investigate the growth characteristics of algae during pre-bloom and the importance of algal inocula in the water column and sediment. The results showed that in the water column, biomass of all algae increased in all treatments when recruitment was initiated, whereas this tendency differed among treatments with further increment of temperature. The process of algal growth consisted of two stages: Stage I, the onset of recruitment and Stage II, the subsequent growth of algae. Compared with S+W, in Stage I, SS+W significantly increased the biomass of cyanophytes by 178.70%, and decreased the biomass of non-cyanophytes by 43.40%; In Stage II, SS+W notably stimulated the growth of all algae, thus incurring the occurrence of phytoplankton bloom. Further analyses revealed that both metabolic activity and photochemical activity of algae were enhanced in SS+W, which resulted from the releasing of nutrients from sediment. These results suggest that algal growth in Stage II and algal inocula in the water column can be important factors for the formation of phytoplankton bloom. In addition, possible mechanisms promoting algal recruitment and subsequent growth of algae were explored.Yuhong Jia Johnson Dan Min Zhang Fanxiang Kong 2013Journal of Environmental Sciences2013,25,2:6
3Comparison of blood velocity measurements between ultrasound Doppler and accelerated phase-contrast MR angiography in small arteries with disturbed flow显示文摘Jingfeng Jiang Charles Strother Kevin Johnson Sara Baker Dan Consigny Oliver Wieben James Zagzebski 2011Physics in Medicine and Biology2011,,6:1
4Compensation committee com pos ition as a determinant of CEO compensation显示文摘Daily Johnson Alan E Ellstrand Dan R Dalton 1998Academy of Management J ournal1998,41,2:1
5Ellstrand, Number of Directors and Financial Performance: A Meta-Analysis显示文摘Dan R Dalton Catherine M Daily Jonathan L Johnson Alan E 1999Academy of Management Journal1999,,6:1
6Development of New TPS at NASA Ames Research Center显示文摘Sylvia M Johnson Matthew J Gasch Dan Leiser 2008AIAA2008,2560,:1
7Number of directors and financial performance:A meta-analysis显示文摘Dan Johnson Ellstrand 1999Academy of Management Journal1999,,42:1
8隐私权与政策过失——数据限制立法如何影响新兴市场中的信息引导的发展Michael A.Turner Peter Johnson Dan Balis 苏苗罕 2007公法研究2007,6,1:1
9Alternative Energy Sources Gain Worldwide显示文摘风能和太阳能展示新的希望:清洁、廉价并能创造新的就业机会,难怪许多国家竞相发展。Dan Johnson 高小林 1998当代外语研究1998,,11:1
10Long-term follow-up of patients diagnosed with alcohol dependence or alcohol abuse who were evaluated for liver transplantation显示文摘Robert G. Gish Angela Lee Linda Brooks Janet Leung Johnson Y.N. Lau Dan H. Moore 2001Liver Transplantation2001,,7:1
11Convective heat loss and change in body temperature of grasshopper and locust nymphs: Relative importance of wind speed, insect size and insect orientation显示文摘Derek J. Lactin Dan L. Johnson 1998Journal of Thermal Biology1998,,1:1
12Resurrection of Uric Acid as a Causal Risk Factor in Essential Hypertension显示文摘Richard J. Johnson Dan I. Feig Jaime Herrera-Acosta Duk-Hee Kang 2005Hypertension2005,,1:1
13Number of directors and financial performance:A meta-analysis显示文摘Dan Johnson Ellstrand 1999Academy of Management Journal1999,,42:1
14昆明巫家坝城市新中心概念规划设计显示文摘昆明正在转型成为中国西南的区域性国际中心城市。此次大规模的场地开发是创造一个具有活力的中央商务区的绝好机遇,也可以帮助昆明在发扬当地独特文化、提高居民生活品质的同时实现区域经济发展的目标。在规划建造一个大规模功能混合新区时,最大的挑战就是通过设计使未来的开发项目和原有的文化传统和谐共生。为了塑造出有活力、有人气的居住环境,设计强调人性化和宜居的开发强度,给居民及游客提供舒适的环境体验。面对这样的挑战,SmithGroupJJR组织多学科团队进行紧密合作,支持这个大尺度项目的规划设计。聚焦于经济、生态、能源、文化、交通、公共空间等关键领域,团队提出了符合巫家坝新城市中心可持续发展愿景的规划设计原则,提供了助力昆明长远发展的全方位规划战略。Hank Byma 沈煜然 Michael Kang Dan Kinkead Michael Johnson Stephen Conschafter Brian Martin Valerie Berstene 何川 高宁 张丹枫 刑成 张悦 施唯 2017城市建筑2017,0,33:0
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