Results 151 to 160 of about 1,292,395 (359)
Determination of elemental carbon and mineral dust in snow and ice samples
, 2021 Daniela Kau
openalex +1 more source
A Low‐Cost and Compact High‐Frequency Gallium Nitride Gradient Power Amplifier for Low‐Field MRI
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To reduce the upfront cost of small, low‐field MRI systems, while expanding the capabilities of their gradient systems. Methods A gradient power amplifier was designed to leverage the lowering cost of Gallium Nitride (GaN) power transistors and high speed logic, to achieve high efficiency and responsiveness for driving gradient coils ...
N. Reid Bolding +7 more
wiley +1 more source
Application of LANDSAT imagery for snow mapping in Norway [PDF]
The author has identified the following significant results. During the summer seasons of 1975 and 1976, the snow cover was successfully monitored and measured in the four basins.
Odegaard, H., Skorve, J. E.
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Oikos, EarlyView.Climate change increases the recurrence of drought events with strong repercussions on grassland ecosystems. While the effects of single drought events on ecosystem structure and functioning are well understood, it is largely unknown whether and how recurrent drought events modify ecosystem responses to subsequent drought.
Lena M. Müller +4 more
wiley +1 more source
Seasonal and diel changes in photosynthetic activity of the snow alga Chlamydomonas nivalis (Chlorophyceae) from Svalbard determined by pulse amplitude modulation fluorometry [PDF]
, 2007 Marek Stibal +3 more
openalex +1 more source
Studies of snowpack properties by passive microwave radiometry [PDF]
Research involving the microwave characteristics of snow was undertaken in order to expand the information content currently available from remote sensing, namely the measurement of snowcovered area.
Chang, A. T. C. +4 more
core +1 more source
Oikos, EarlyView.Animal breeding phenology in temperate and high latitude regions is often predicted by weather variables, such as temperature. Much work on this topic has focused on taxonomic groups that employ adaptive plastic responses to annual variation in an environmental cue, with analytical approaches developed to determine when weather has an effect and the ...
Kirsty H. Macphie +6 more
wiley +1 more source
Assessment of the relative accuracy of hemispheric-scale snow-cover maps [PDF]
, 2002 Dorothy K. Hall +4 more
openalex +1 more source
A study to develop improved spacecraft show survey methods using Skylab/EREP data: Demonstration of the utility of the S190 and S192 data [PDF]
The author has identified the following significant results. This interim report provides a demonstration of the utility of spacecraft acquired Skylab S190A and S190B photography and S192 imagery for mapping areal extent of snow cover in western United ...
Barnes, J. C. +2 more
core +1 more source