منابع مشابه
Laboratory Procedures, Apparatus and Improvizations
In the recent medical literature, there has been an almost uninterrupted flow of papers describing new methods of desiccation, or introducing some modifications in old methods. It is not the purpose of this paper to describe a new method of desiccation, but to stress certain technical details and amplify certain procedures which it is hoped will be found useful in any method finally selected by...
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Aeration of some sort is frequently provided during laboratory cultivation of bacteria. Since metabolic responses and the nature of fermentation products may depend upon the amount of available oxygen (Pirt, 1957), it is important to have some adequate measure of this variable. Finn (1954) has pointed out that gassing rates alone are without significance; it is necessary to determine the rate a...
متن کاملEntangled photon apparatus for the undergraduate laboratory
We present detailed instructions for constructing and operating an apparatus to produce and detect polarization-entangled photons. The source operates by type I spontaneous parametric downconversion in a two-crystal geometry. Photons are detected in coincidence by single-photon counting modules and show strong angular and polarization correlations. We observe more than 100 entangled photon pair...
متن کاملLaboratory Apparatus to Evaluate Microalgae Production
The application of microalgae for energy purposes and CO2 biomitigation continues to present a number of challenges, including the optimization of culture conditions. The application of experimental designs for microalgae cultivation is difficult, since experiments involving such microorganisms generally last days or weeks. This work proposes a multipurpose laboratory apparatus for the optimiza...
متن کاملSome laboratory aids for a clinical laboratory.
N MANY INSTANCES the needs of a modern clinical laboratory are not completely satisfied through the usual commercial outlets. The item desired may be completely unavailable; it may be outside the budgetary limits of the laboratory; or a commercially available item may be unsatisfactory for the particular and peculiar needs of a clinical laboratory. The following discussion of clinical laborator...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1894
ISSN: 0036-8733
DOI: 10.1038/scientificamerican09081894-15581csupp