The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Microprojection

a method of producing the optical images of small objects formed by a microscope on a screen (in the case of microphotography and microcinephotography, on a photosensitive layer).

In microprojection the objective (2) of a microscope (see Figure 1) produces, as usual, a magnified real image (1’) of an object (1), but the eyepiece (3) functions as a projection system (for this purpose, the microscope is focused so that [1’] is located in front of the front focus F of the eyepiece) and produces a real image (1”) on the screen (4). The linear optical magnification for the microoroiection is

where Δ_obj and eye are the nominal values of the magnifications for the objective and the eyepiece, f’_eye is the focal distance of the eyepiece, and K is the distance from the eyepiece to the

Figure 1. Diagram of formation of an image in microprojection

Microprojection is also used to produce images of microscopic objects on the photocathode of an image-converter tube in research conducted by ultraviolet and infrared light and on the photosensitive layer of camera tubes in television microscopy.

L. A. FEDIN

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References in periodicals archive

(a) 5 [cm.sup.2] adhesive backing with microprojection array (3 [cm.sup.2]) in applicator ring.

In the current study, we evaluated Strat-M (synthetic membrane), full thickness, and dermatomed ex vivo skin on percutaneous delivery of zolmitriptan from a novel drug-coated microprojections that target the epidermal/dermal layer for rapid and efficient delivery.

Effect of Skin Model on In Vitro Performance of an Adhesive Dermally Applied Microarray Coated with Zolmitriptan

Paraphyses with a small sclerotized microprojections, "C" shaped with a long seta on the upper edge and 2 on the inner edge of middle gonopod.

Tres especies nuevas del grupo Drosophila tripunctata (Diptera: Drosophilidae) en los Andes Orientales de Ecuador

The major change is a relatively flat dermal-epidermal junction because of retraction of the epidermal papillae as well as the microprojections of basal cells into the dermis.

Morphology of aged skin

This technology involves coating dried vaccines onto microprojections. "When it's put into the body, within the first few seconds or minutes, the moisture of the body dissolves the vaccine and it begins to be taken up by antigen-processing cells," Dr.

In the works: cutaneous vaccines

Variability, function and phylogenetic significance of periostracal microprojections in unionid bivalves (Mollusca).

Spikey bivalves: intra-periostracal crystal growth in anomalodesmatans