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56848 documents, page 2 of 5685

Ship power plant selection

http://archive.org/details/shippowerplantse00hewi NA NA

A model for allocation of sewage treatment systems to the Naval Fleet

The paper discusses the problem of planning the allocation of sewage treatment systems to the Naval Fleet. It is assumed that the obsolescence or deterioration process of a ship is a semi-Markov process. For the special case of deterministic deterioration, the total discounted cost of revamping a group of ships is determined as a function of the time horizon chosen to do so. This function is graphed for a set of representative cost factors. Finally, the semi-Markov and Markov models are discu...

Environmental Stimuli in the Progression of BHK/21 Cells Through the Cell Cycle

An L-cell line adapted to grow in protein-free medium is a source of material that stimulates the proliferation of serum-dependent BHK cells under otherwise protein-free conditions. The material produced by the L-cells is resolvable into separate DNA-synthetic and mitotic stimulatory activities. The stimulation of mitosis is dependent upon the presence of one or more heat-labile macromolecules, which can be concentrated by ultrafiltration, and at least one dialyzable component is essential fo...


The main purpose of this study was to survey the trends in the group researches in physical education in Japan and further to examine the themes of group research in the future. The method of this study, the group research in physical education were drawn out from "Research Journal of Physical Education" (published by Japsnese Society of Physical Education) and their researches were classified and examined. Main findings were as follows: (1) Till about 1960, the studies on the group learning,...



International collaborative studies on potency assays of diphtheria and tetanus toxoids

Collaborative studies showed that relative potency assays for a particular type of diphtheria toxoid (adsorbed) and for tetanus toxoid (plain and adsorbed) gave very similar results, whether the assays were carried out by toxin challenge or by antitoxin titration after immunization of experimental animals with graded doses of toxoid. The same numerical results were obtained with a scoring system as with a system based on survivals only. Although skin tests were used on a very limited scale in...

Land Utilization and Water Resource Inventories over Extended Test Sites

During the past decade, many actual and potential applications for remote sensing technology have been determined. This past year has seen a tremendous amount of interest generated in the application of remote sensing to problem related to land-use. A key element in applying remote sensing to land-use studies involves accurate identification of basic and vegetative cover types. In work with automatic data processing (UP) techniques it is found that as information requirements become more spec...