42 research outputs found
Effects of Cooking in Solutions of Varying pH on the Dietary Fiber Components of Vegetables
To study the effect of pH on dietary fiber components of vegetables, beans, cauliflower, potatoes, peas and corn were cooked in buffers of pH 2, 4, 6, and 10. Water-soluble pectin and hemicellulose, water-insoluble pectin and hemicellulose, cellulose and lignin were quantitated in raw, cooked vegetables and cooking medium. Tenderness and pH of raw and cooked vegetables were determined. Texture varied with cooking medium. Cooked vegetables were most firm at pH 4 and softest at pH 10. Dietary components found in cooking medium reflected these textural changes. Vegetables which showed greater pH effects exhibited greater changes in fiber components.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73821/1/j.1365-2621.1984.tb13237.x.pd
Origins of the Ambient Solar Wind: Implications for Space Weather
The Sun's outer atmosphere is heated to temperatures of millions of degrees,
and solar plasma flows out into interplanetary space at supersonic speeds. This
paper reviews our current understanding of these interrelated problems: coronal
heating and the acceleration of the ambient solar wind. We also discuss where
the community stands in its ability to forecast how variations in the solar
wind (i.e., fast and slow wind streams) impact the Earth. Although the last few
decades have seen significant progress in observations and modeling, we still
do not have a complete understanding of the relevant physical processes, nor do
we have a quantitatively precise census of which coronal structures contribute
to specific types of solar wind. Fast streams are known to be connected to the
central regions of large coronal holes. Slow streams, however, appear to come
from a wide range of sources, including streamers, pseudostreamers, coronal
loops, active regions, and coronal hole boundaries. Complicating our
understanding even more is the fact that processes such as turbulence,
stream-stream interactions, and Coulomb collisions can make it difficult to
unambiguously map a parcel measured at 1 AU back down to its coronal source. We
also review recent progress -- in theoretical modeling, observational data
analysis, and forecasting techniques that sit at the interface between data and
theory -- that gives us hope that the above problems are indeed solvable.Comment: Accepted for publication in Space Science Reviews. Special issue
connected with a 2016 ISSI workshop on "The Scientific Foundations of Space
Weather." 44 pages, 9 figure
The Effects of IFRS Adoption on the Unconditional Conservatism of Spanish Listed Companies
This paper analyses the effects of the mandatory adoption of International Financial Reporting Standards (IFRS) by Spanish listed companies in January 2005 on unconditional conservatism. The lack of robustness in previous evidence justifies analysis of this issue from a different perspective. To this end, we use, for the first time in this context, Ahmed and Duellman's (2007) methodology. These authors consider the impact of growth options and other future income, controlling for the idiosyncratic factors that the literature has found condition this type of conservatism. Additionally, beyond the pooled regression techniques usually used, we use econometric panel data techniques, which minimise the possible effect of endogeneity in the estimation of the proposed models. The results provide new evidence which supports our hypothesis that the adoption of IFRS has reduced the unconditional conservatism of Spanish listed companies
The experiences of counselling for persons with ME
British Association for Counselling and Psychotherapy A number of studies have evaluated counselling interventions for people with myalgic encephalitis, but few report client perceptions in any detail. This study seeks to explore client perceptions using a qualitative methodology. A sample of 25 individuals with myalgic encephalitis were interviewed about their experiences in counselling. The interviews were transcribed and subjected to thematic analysis using grounded theory principles. The analysis showed that people with myalgic encephalitis endure significant changes to their lives, often involving great loss and trauma. After seeking help through counselling, participants had experienced a wide variety of approaches and there were positive and negative perceptions of each. Other perceptions related to therapist characteristics and the way in which interventions were carried out. Recommendations for practitioners are given