Periodontitis; Iron--Health aspects; Iron in the body
The dental pathogen A. actinomycetemcomitans, a Gram- negative organism, has been associated with aggressive forms of periodontitis. A. actinomycetemcomitans requires iron to grow. In the host, iron-binding proteins such as transferrin,...
Iron oxide, Fe2O3, is a promising material for water splitting reaction using solar
energy due to its stability and optimal bandgap of 2 eV. Even the recent efforts, however,
using Fe2O3 thin film materials reported low efficiencies due to poor...
Quorum sensing (Microbiology); Cellular signal transduction; Bacterial genetics
Quorum sensing in the oral pathogen Aggregatibacter actinomycetemcomitans is dependent upon the soluble signaling molecule AI-2, but it is not known how the initial detection of AI-2 is coupled to the downstream regulation of gene expression that...
Energy independence requires that the nation reduce its dependence on foreign oil imports. This can be achieved through electrification of transportation vehicles if proper battery technology can be developed. In addition, the renewable energy...
Over the last 15 years, researchers have explored the use of piezoresistive microcantilevers/resonators as gas sensors because of their relative ease in fabrication, low production cost, and their ability to detect changes in mass or surface stress...
Nitrile hydratase (NHase) is a metalloenzyme that contains a non-heme iron (III)
or non-corin cobalt (III) in a non-redox active role. NHase is used as biocatalyst in the
industry for the hydrolysis of nitriles to arnides. The trivalent metal ions...
Heat pipes; Solar heating--Passive systems; Solar heating--Research; Solar energy--Research
The one dimensional heat transfer, thermal diode effect of heat pipes makes
them ideal for passive solar applications. Gains in a heat pipe passive solar wall are not
lost during cloud cover or periods of low irradiation. An experimental model was...
Long row of freight cars filled with coal curving back along the railroad tracks. More tracks and another train are to the left. Industrial equipment is in the background. Title: 6705 - A Trainload of Coal - Fresh from Pittsburgh Fields for Lake...
Freight cars filled with iron ore. A man stands on top of one car guiding a bucket of ore. Beyond the trains are a barge and smaller ships in the water. Title: (75)-7965-Unloading iron ore from lake vessels - old and new methods - Cleveland, O....
Soon after the atomic theory was established, it was found that the plant uses as sources of food not only the air and water, but also different constituents of the soil, dissolved in the soil moisture—the mineral nutrients. Ashes of different...
Iron miners; Mining; Wheelbarrows; Shovels; Iron mining
A group of miners digging for iron in the middle of a field (may be a cornfield after the harvest) in Bath County, Kentucky. Some miners have shovels and buckets. There are also two wheelbarrows and some planks across ditches.
Iron ore (15 feet thick) in a mountainside in Bath County, Kentucky. A shovel, two pickaxes, and a spading fork lie on the ground around the mining site.
City & town life; Street railroads; Railroads; Pedestrians
Two streets, identified as Broadway and Fifth Avenue, meet at an angle with the Flat Iron Building in between them in New York City. Both streets are lined with buildings and have pedestrians and horse-drawn carriages and wagons on them. The street...
Schools; Classrooms; Children; Desks; Teachers; Stoves; Newspapers; People
Boys and girls sit at iron and wood desks in a classroom while a woman observes. The students are reading a newspaper titled Southern Agriculturist. The boys wear sweaters or jackets over button up shirts with ties. One girl has short bobbed hair,...
The Henri Barret Montfort Home stands at 413 W. Broadway in Louisville, Kentucky. The building is set off from the public by an iron fence and has a walk leading up to a double-sided staircase. The staircase leads to the entryway which is supported...
In the year 1573 when Shakespeare and Marlowe were already boys of nine, Chapman in adolescence, Spenser, Lyly and Richard Hooker men of twenty, John Donne, then important to only a few but destined to the company of royalty, was born. Walton...
To gain a true appreciation of the works of any author, we must first be familiar with his race, his environment, and the period in which and of which he wrote. The Paris of the early seventeenth century was far different from the modern metropolis...
Home of Isaac F. Starks at 2011 Woodford Place, Louisville, Kentucky. Two-story brick colonial home with three dormers on roof; shutters on other windows, which have keystones. Pillared entrance is topped by an iron railing. There is a sunroom...
