The ability of plants and microorganisms to take up organic nitrogen in the form of free amino acids and oligopeptides has received increasing attention over the last two decades, yet the mechanisms for the formation of such compounds in soil environments remain poorly understood. We used Nuclear Magnetic Resonance (NMR)...
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,† Eric D. Walter,‡ Mark E. Bowden,‡ Nancy M. Washton,‡
and Markus Kleber†,§
†Department of Crop and
Since a NanoSIMS high-resolution secondary ion mass spectrometry instrument was first used for cosmochemistry investigations over a decade ago, both interest in NanoSIMS and the number of instruments available have significantly increased. However, SIMS comes with a set of challenges that are of both technical and conceptual nature, particularly for...
Adolescence is a developmental stage marked by crystallization in individuals’ sense of identity (Erikson, 1994; Harter, 1999). Research on positive youth development stresses the ways in which thriving trajectories during adolescence contribute to positive lifelong outcomes (Lerner & Overton, 2008; Scales, Benson, & Roehlkepartain, 2011) A symbolic interactionism perspective (Mead,...
Grounded in life span theory, this study explored how personal goals (as measured by possible selves) related to depressive symptoms in older adults. Possible selves represent individuals' ideas of what they would like to become (hoped-for selves) and what they are afraid of becoming (feared selves). Possible selves are also...
As the 2009 growing season comes to a close, we prepared this newsletter to provide information on several viticulture and enology issues important to the Oregon winegrape industry. We begin with the most immediate topic of this season – wine production with Dr. James Osborne and importance of wine superstars...
Contemporary parenting strategies tend to involve
parent-child interactions in which the parent neither
repressively dominates the child nor follows a permissive
laissez-faire course but respects the child's dignity as a
person. This paper integrates several current theories of
parenting and parent education into the construct of
"respectful parenting," which is...
Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...