搜索结果: 121-135 共查到“理学 biological”相关记录232条 . 查询时间(0.328 秒)
The Biological Metaphor of a Second-Order Observer and the Sociological Discourse
sociocy bernetics meaning observer social systems observational report expectation communication
2010/4/8
Purpose: In the tradition of Spencer Brown's (1969) Laws of Form, observation was defined in Luhmann's (1984) social systems theory as the designation of a distinction. In the sociological design, how...
A mechanistic modelling and data assimilation approach to estimate the carbon/chlorophyll and carbon/nitrogen ratios in a coupled hydrodynamical-biological model
mechanistic modelling data assimilation approach carbon/chlorophyll and carbon/nitrogen ratios
2009/11/11
The principal objective of hydrodynamical-biological models is to provide estimates of the main carbon fluxes such as total and export oceanic production. These models are nitrogen based, that is to s...
Plankton blooms in vortices:the role of biological and hydrodynamic timescales
Plankton blooms vortices biological and hydrodynamic timescales
2009/11/3
We study the interplay of hydrodynamic mesoscale structures and the growth of plankton in the wake of an island, and its interaction with a coastal upwelling. Our focus is on a mechanism for the emerg...
Surface mixing and biological activity in the four Eastern Boundary Upwelling Systems
Surface mixing biological activity four Eastern Boundary Upwelling Systems
2009/10/30
Eastern Boundary Upwelling Systems (EBUS) are characterized by a high productivity of plankton associated with large commercial fisheries, thus playing key biological and socio-economical roles. Since...
EXPERIMENTAL STUDY ON THE NITROGEN CIRCULATION OF A BIOLOGICAL POND
EXPERIMENTAL STUDY NITROGEN CIRCULATION BIOLOGICAL POND
2009/10/29
The ammonification and nitritation potentials of a biological pond in
southern Finland have been expcrirnentally explored at the laboratory
scale.
The intention of this study was to explore experim...
Current Major Activities on the Conservation and Sustainable Use of Biological Diversity
Conservation Biological Diversity Sustainable Use
2009/9/23
Current Major Activities on the Conservation and Sustainable Use of Biological Diversity。
Strategy of Sustainable Use of Biological Resources
biological resources multi—objective optimal sustainable yield strategy of satisfied sustainable yield
2009/9/22
In this paper，the theory of Muhi-Objective Optimal Sustainable Yield is developed based on
the theory of optimal sustainable yield，which makes multiple objectives about biology，environment．
economy ...
Day-time concentrations of biogenic volatile organic compounds in a boreal forest canopy and their relation to environmental and biological factors
Day-time concentrations biogenic volatile organic compounds boreal forest canopy environmental and biological factors
2009/8/7
Atmospheric concentrations of methanol, acetaldehyde, acetone, isoprene and monoterpenes were measured using PTR-MS (proton transfer reaction mass spectrometry) in a boreal forest site in Hyytiäl...
Biological warfare in bacteria offers hope for new antibiotics
biological warfare bacteria offers new antibiotics
2009/7/6
Scientists are to study a group of proteins that are highly effective at killing bacteria and which could hold the key to developing new types of antibiotics.Researchers from the Universities of York ...
Potential impacts from biological aerosols on ensembles of continental clouds simulated numerically
Potential impacts biological aerosols ensembles continental clouds
2010/1/20
An aerosol-cloud modeling framework is described to simulate the activation of ice particles and droplets by biological aerosol particles, such as airborne ice-nucleation active (INA) bacteria. It inc...
A bibliography of hydrological, geomorphological, sedimentological, biological and hydrochemical references to the Institute of Hydrology experimental catchment studies in Plynlimon
hydrological sedimentological geomorphological Hydrology experimental
2009/6/8
This bibliography provides a backdrop to the environmental research completed within the context of the Plynlimon catchment study area. It includes the bibliography produced by Kirby et al. in 1991 pl...
Biological Diversity，Land Degradation and Sustainable Rural Livelihoods
Diversity Sustainable biological
2009/6/1
The l998 Conference Of Parties to the Convention on Biological Dirersity asked naional govermments to demonstrate the importance Of biological diversity in supporting mnd communities. This paper intro...
An evaluation of iron bioavailability and speciation in western Lake Superior with the use of combined physical, chemical, and biological assessment
An evaluation of iron bioavailability speciation in western Lake Superior use of combined physical chemical biological assessment
2014/4/18
An iron-dependent cyanobacterial bioreporter (Synechococcus strain KAS101) was used in unison with size-fractionated iron content (>0.45, <0.45, <0.02 μm), and chemical characterization of iron comple...
Biological consumption of dimethylsulfide (DMS) and its importance in DMS dynamics in the Ross Sea, Antarctica
Biological consumption of dimethylsulfide DMS importance in DMS dynamics in the Ross Sea Antarctica
2014/4/18
We studied the biological consumption of dimethylsulfide (DMS) and its role in controlling DMS concentrations in the Ross Sea, Antarctica, during the spring (Nov) and summer (Jan) of 2005. Surface DMS...
Scientists Make First Direct Observations of Biological Particles in High-Altitude Clouds（图）
Scientists Direct Observations Biological Particles High-Altitude Clouds
2009/5/20
A team of atmospheric chemists has moved closer to what's considered the "holy grail" of climate change science: the first-ever direct detections of biological particles within ice clouds.The team, le...