نتایج جستجو برای: marine current energy

تعداد نتایج: 1476750  

Journal: :Journal of Marine Science and Engineering 2023

Ocean current is one of the most important parameters in ocean observation, and measurement based on electromagnetic induction becoming more because its advantages such as simple structure high accuracy. However, it difficult to detect weak signals a complex marine environment. In this paper, an scheme lock-in amplification technology proposed. Key technologies evaluation induced intensity, ove...

Journal: :International Journal of Marine Engineering Innovation and Research 2018

Journal: :PLoS Biology 2006
Steven J Hallam Tracy J Mincer Christa Schleper Christina M Preston Katie Roberts Paul M Richardson Edward F DeLong

Marine Crenarchaeota represent an abundant component of oceanic microbiota with potential to significantly influence biogeochemical cycling in marine ecosystems. Prior studies using specific archaeal lipid biomarkers and isotopic analyses indicated that planktonic Crenarchaeota have the capacity for autotrophic growth, and more recent cultivation studies support an ammonia-based chemolithoautot...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Manuel Kleiner Cecilia Wentrup Christian Lott Hanno Teeling Silke Wetzel Jacque Young Yun-Juan Chang Manesh Shah Nathan C VerBerkmoes Jan Zarzycki Georg Fuchs Stephanie Markert Kristina Hempel Birgit Voigt Dörte Becher Manuel Liebeke Michael Lalk Dirk Albrecht Michael Hecker Thomas Schweder Nicole Dubilier

Low nutrient and energy availability has led to the evolution of numerous strategies for overcoming these limitations, of which symbiotic associations represent a key mechanism. Particularly striking are the associations between chemosynthetic bacteria and marine animals that thrive in nutrient-poor environments such as the deep sea because the symbionts allow their hosts to grow on inorganic e...

2004
Abbas Rajabifard Philip Collier Ian Williamson

Decision-makers in both land and marine related areas of the coastal zone need to access marine related datasets in order to effectively achieve their economic, social and environmental objectives. Therefore, administering the spatial dimension of the marine environment is an important area for research internationally, particularly within the Asia-Pacific region. With this in mind, the Departm...

2010
Rick van Kessel

This research focusses on the conversion process from mechanical wave energy to electrical energy using an innovative approach with Dielectric Electro Active Polymers (DEAP). These materials have shown great potential as deformable electromechanical actuator devices, however, the generator mode is unexplored yet. Such a deformable DEAP structure could offer distinctive advantages in wave energy...

2004
Scott J. Couch Ian G. Bryden

Synopsis Application of 2-d and 3-d numerical tidal models in the marine renewable energy field has typically been to identify appropriate sites for marine energy extraction and quantify the potential energy available for extraction. Implicit in such an analysis is the assumption that local flow conditions will not be significantly altered by the energy extraction process. Considering the compl...

2014
Roger M. Nisbet Russell J. Schmitt Erik B. Muller Kevin Carman

The ecological effects of environmental stress occur within complex communities and ecosystems. Prior to the current award, the PIs formulated and tested general dynamic energy budget models characterizing the response of individual organisms to toxicants, and developed methodology for using these models to predict population dynamics. They also developed new theory describing the trophic dynam...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

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