Land Grant Application- Shepard, William (Jefferson)

Land grant application submitted to the Maine Land Office on behalf of William Shepard for service in the Revolutionary War, by their widow Lucy.https://digitalmaine.com/revolutionary_war_me_land_office/1807/thumbnail.jp

Upgrading of NASA-Ames high-energy hypersonic facilities: A Study

This study reviews facility capabilities of NASA, Ames Research Center to simulate hypersonic flight with particular emphasis on arc heaters. Scaling laws are developed and compared with ARCFLO II calculations and with existing data. The calculations indicate that a 300 MW, 100 atmosphere arc heater is feasible. Recommendations for the arc heater, which will operate at voltages up to 50 kilovolts, and the associated elements needed for a test facility are included

An analysis and set of principles for industrial open house

Thesis (M.S.)--Boston University, 1949. This item was digitized by the Internet Archive

Thermodynamic analysis of viscous compressible flow in a nozzle considering real gas effects

Ph.D.Walter O. Carlso

Escarabajos (Coleoptera) de Perú: un muestreo de las familias. Mycetophagidae Leach 1815

The diversity of the family Mycetophagidae (Coleoptera) is summarized for Peru. Two genera are recorded (Litargus Erichson and Thrimolus Casey). Comments are given on classification and distribution of the family, as well as known biology and natural history.La diversidad de la familia Mycetophagidae (Coleoptera) se resume para Perú. Se registran dos géneros (Litargus Erichson y Thrimolus Casey). Se proporcionan comentarios sobre la clasificación y distribución de la familia, asi como la biología conocida y la historia natural

The application and utilization of mining models for instruction and display

The subject of the utilization of mine models for instruction and display at institutions offering courses in mining engineering has not been widely discussed in the literature. The value of models as visual aids in teaching has long been recognized, and they have been extensively employed by some institutions and by some instructors. However, the writer believes that a wider range of types of models are suitable for instruction purposes than have been employed in the past, and that mining models, properly arranged and adequately labelled, may be used in displays to give both the layman and the beginning student a clear idea of mining practices and methods. This discussion will consider the various types of models and methods for their construction which have been described in the literature. Sources from which models may be acquired, principally those sources which would be of use to a university mining department, and the uses for mine models also will be considered. Particular stress will be placed on the utilization of mine models for instruction and display. It is believed that a consideration of this problem will indicate not only new areas for model construction, but will lead also to fuller utilization of existing models in displays and indicate wider fields for the use of mine models in instruction. During the course of the discussion, the restricted term, model of a mine, will be reserved for a model of a specific mining operation such as those which are employed as working models at operating properties; the more general terms, mine model and mining model will be employed to include all types of operating and non-operating models of mines, mining practices and methods, and mining equipment. The photographs used as illustrations throughout this paper were taken of models from the display collection of the Missouri School of Mines and Metallurgy, Rolla, Missouri --Introduction, pages 1, 3

Letters between Irwin Shepard and William Kerr

Letters concerning the forty-third annual convention for the National Educational Association

A generic key to the known larval Elmidae (Insecta: Coleoptera) of French Guiana

An identification key is provided for 21 larval types of Elmidae (riffle beetles) known to occur in French Guiana. Not all elmid genera known to occur in French Guiana are known in the larval stage. Nor are all the known larval types assigned to known elmid genera