Successful software systems evolve over their lifetimes through the cumulative changes made by software maintainers. As software evolves, the problems resulting from software change worsen, exacerbated by increased system size and complexity, lack of program understanding, amount of effort required to make changes, and number of personnel involved. Experience shows...
Increased atmospheric carbon emissions of carbon monoxide, carbon dioxide, and methane acerbate climate change through carbon cycle disruption. Riparian areas offer substantial ecosystem services such as water filtration, slowing and cooling, and as is being discovered, a significant carbon sink. Total percent carbon and carbon stocks in restored riparian areas...
Ion-selective polymeric optical sensors – ion optodes – are a promising alternative to ion-selective electrodes and fluorescent dyes for analytical and biological applications, e.g. extra- and intracellular measurements. They are non-toxic, highly selective robust probes for ionic fluxes monitoring.
A large-scale fabrication of ion optodes using a solvent displacement method...
The effects of five tillage treatments on soil bulk density and
mechanical impedance were examined on Newburg sandy loam soil in the
Willamette Valley, Oregon, in 1987. Subsequent effects on seedling
emergence and yield of carrots (Daucus carota L., cvs. Orlando Gold
and Royal Chantenay) were also measured. Mechanical impedance...
There have been many attempts to characterize and mimic natural fluid-based adhesive systems. However, very few of these studies have examined surface or interfacial interactions between adhesive and substrate. Furthermore, until now no study has used a combination of surface analytical and kinematic techniques to determine the precise chemical mechanisms...
The purpose of the present study was to describe the process
of marital dissolution. This description entailed collecting information
about the process itself and then typologizing divorces
on the basis of their trajectories to dissolution. One hundred
and seven divorced individuals were interviewed. This interview
consisted of three parts. First,...
It has been proposed that individuals develop models
of premarital relationships based on their preferred ways of
experiencing love with another person. This study attempted
to operationalize the concept of relationship models to
determine if individuals differ in how they expect their
feelings of love to develop over the course...
The purpose of this study was, first, to investigate whether there
is a vitamin B-6 requirement for carnitine synthesis and, second, to investigate
the effect of fasting on vitamin B-6 metabolism. An experimental
group of 72 rats (6 per group) were fed either a vitamin B-6 deficient
diet (-B6) (ad...