Section freeze-dry radioautography has been used to examine the intrarenal distribution of a water-soluble organic acid (para-aminohippuric acid (PAH-3H)) under constant-infusion, steady-state conditions in mouse and rat kidney in vivo. The technique described here has the following advantages: (a) Sectioning and freeze-drying are accomplished in a closed cryostat at temperatures below -40 degr...

This paper describes a practical method for the fabrication of photomasks, masters, and stamps/molds used in soft lithography that minimizes the need for specialized equipment. In this method, CAD files are first printed onto paper using an office printer with resolution of 600 dots/in. Photographic reduction of these printed patterns transfers the images onto 35-mm film or microfiche. These ph...

The waste X-ray/ photographic films contain 1.5 2 % (w/w) black metallic silver which is recovered and reused. Around 18-20% of the world's silver needs are supplied by recycling photographic waste. Since silver is linked to gelatin in the emulsion layer, it is possible to break the same and release the silver using proteolytic enzymes. Alkaline protease from Conidiobolus coronatus was investig...

From the end of the 19th century, the development of a process for manufacturing thin plastic films was tightly linked to the emerging industry for movies and photographic films. 5 mil (125 micron) film was produced using a discontinuous device with a caster moving over 200 feet long glass plates at Eastman KODAK [1]. Soon, first patents were issued to cast celluloid films on a moving surface b...

A means and apparatus for covert capture of extremely high-resolution photorealistic images is presented. The apparatus embodies a new form of user-interface – instead of the traditional “point and click” metaphor which was thought to be the simplest photography had to offer, what is proposed is a “look” metaphor in which images are generated through the natural process of looking around, in a ...

Photographic records of early 1900s polar expeditions encapsulated a paradox: the spectacle “monotonous” “numbing whiteness” in images “nothing” that were intended for public exhibition. This article examines expedition photography as an ecosystem materials and meanings to reconsider status “failed” photographic experiments have remained sublimate iconic exploration. Light sensitive — emulsion ...

X-ray diffraction characterization of materials used in traditional silver halide and digital semiconductor photographic systems is described. Silver halide grains precipitated as multicomponent AgBr1-xIx phases were found to be comprised of a core with three shells. The composition of the core and shells was determined using lattice constant measurements. Nanocomposites for photographic antist...

nique reported by Paty et al. (2). The procedure is as follows: Concentrate 3 mL of CSF 80-fold in a Minicon CS 15 spinal fluid concentrator (Amicon Corp., Lexington, MA 02173). Apply concentrated CSF equivalent to 12 zg of IgG to a Titan III cellulose acetate plate (Helena Labs., Beaumont, TX 77704), and electrophorese for 45 mm at a constant voltage of 180 V, using high-resolution sodium barb...

Sufficient delineation of differences in density is often not achieved by standard x-ray cinematographic technic. As a result, when cineventriculography is used to study the shape and motion of the left ventricle, its free wall is often defined imprecisely, if at all. This problem has been overcome by utilization of a special color-coded, triple-emulsion cine film in place of the usual black an...