Shortened procedure for obtaining reproducible copies of 35 mm color slides

Technique to reduce the steps required to obtain reproducible copies of 35 mm color slides has been developed. A 35 mm slide is projected directly onto a Xerox plate, eliminating the necessity to produce a film positive of the slide

Guide to the Linfield College Photograph Collection

This collection contains photographs, glass lantern and plastic slides, and film negatives depicting the many-layered facets of life at Linfield College on its McMinnville and Portland campuses. The photography features (without limit to): students, faculty and staff, commencements, guest speakers and performers, buildings, activities and clubs, athletics, the arts (studio and performance), residence life, social, and study scenes

Guide to the Linfield College Photograph Collection

This collection contains photographs, glass lantern and plastic slides, and film negatives depicting the many-layered facets of life at Linfield College on its McMinnville and Portland campuses. The photography features (without limit to): students, faculty and staff, commencements, guest speakers and performers, buildings, activities and clubs, athletics, the arts (studio and performance), residence life, social, and study scenes

Hydrophobic coating of solid materials by plasma-polymerized thin film using tetrafluoroethylene

Glass slides were coated with plasma-polymerized tetrafluoroethylene films of different thickness using the glow discharge technique in a tube-shaped chamber, and the plasma conditions, film growth rates, light permeability of the polymer films, and particle bond strength in the polymer films were studied. Ashed sections of mouse organs and ashed bacillus spores were also coated to give them hydrophobic treatment without damaging their shapes or appearance. The hydrophobic coating of the specimens was successful, and the fine ash patterns were strongly fixed onto the glass slides, making permanent preparations

MS 196 Guide to the Mac Suzuki Photograph Collection (1948-1952)

The Mac Suzuki Photograph Collection, MS 196, contains 838 color slides of 35 mm film taken by Mac Suzuki, MD. Most of the images were taken in Japan between 1948 and 1952 while Dr. Suzuki’s worked with the Atomic Bomb Casualty Commission. This material was donated by the children of Dr. Suzuki. The images are good condition although there is some evidence of vinegar syndrome. Most of the slides are Kodachrome with rich color and very sharp images depicting rural, tourist and work related scenes. A few slides are an off-brand of film, which account for the vinegar syndrome. See more at MS 196

An investigation into the effect of thickness of titanium dioxide and gold-silver nanoparticle titanium dioxide composite thin-films on photocatalytic activity and photo-induced oxygen production in a sacrificial system

Thin films of titanium dioxide and titanium dioxide with incorporated gold and silver nanoparticles were deposited onto glass microscope slides, steel and titanium foil coupons by two sol–gel dip-coating methods. The film's photocatalytic activity and ability to evolve oxygen in a sacrificial solution were assessed. It was found that photocatalytic activity increased with film thickness (from 50 to 500 nm thick samples) for the photocatalytic degradation of methylene blue in solution and resazurin redox dye in an intelligent ink dye deposited on the surface. Contrastingly, an optimum film thickness of [similar]200 nm for both composite and pure films of titanium dioxide was found for water oxidation, using persulfate (S2O82−) as a sacrificial electron acceptor. The nanoparticle composite films showed significantly higher activity in oxygen evolution studies compared with plain TiO2 films

Photocatalytic Degradation of Acetaminophen in Water Via Ultraviolet Radiation and Titanium Dioxide Thin Films

Traditional Waste Water Treatment Plants (WWTP) have not been designed to handle pharmaceutical-based contaminants and, therefore, cannot completely eliminate drugs residues. As a result, pharmaceutical metabolites can be found in ground water, surface water and in drinking water in low concentrations. The application of titanium dioxide (TiO2) photocatalysis, for water purification, is widespread technique due to it is chemically inert, cost-effective, non-toxic, and environmentally friendly. In this contribution, transparent, anatase-form TiO2 thin films were prepared via the sol-gel method and deposited onto glass microscope slides, using a novel spraying technique, with coatings ranging from one to ten. Furthermore, characterization of the coated TiO2 thin film slides was performed by using scanning electron microscopy (SEM) and x-ray diffraction (XRD). The slides were used to determine the photocatalytic degradation rate of acetaminophen with different pH ranges (acidic, basic and neutral), different contaminant concentration, and different slides conditions. It was observed that over a period of 90- minute intervals the increase in number of thin film slides displayed a considerable increase in the degradation rate due to the increase in surface area, that helps to form more active sites. However, these results are sensitivity to the pH of the media with the neutral one being the most favorable for the degradation. The global reaction rate constants for both four and six thin film glass slides increase with the increases in the coating layers. Key results with systematic statistically analysis and concluding remarks will be presented. Finally, suggestions for future work will be offered

Broadly tunable (440-670 nm) solid-state organic laser with disposable capsules

An innovative concept of thin-film organic solid-state laser is proposed, with diffraction-limited output and a broad tuning range covering the visible spectrum under UV optical pumping. The laser beam is tunable over 230 nm, from 440 to 670 nm, with a 3 nm full width at half maximum typical spectral width. The structure consists of a compact fixed bulk optical cavity, a polymeric intracavity etalon for wavelength tuning, as well as five different disposable glass slides coated with a dye-doped polymer film, forming a very simple and low-cost gain medium. The use of interchangeable/disposable "gain capsules" is an alternative solution to photodegradation issues, since gain chips can be replaced without realignment of the cavity. The laser lifetime of a single chip in ambient conditions and without encapsulation was extrapolated to be around 107 pulses at a microjoule energy-per-pulse level

The Great Pearl Robbery

1941 film of St. Charles, Missouri high school students acting out a robbery. The St. Charles County Historical Society added narration slides