Cyclical bi-directional rotary actuator

A thermally powered rotary actuator is disclosed which is used for positioning a shaft in first and second positions which are disposed 180 deg apart. A pair of heat extensible springs are attached to the shaft and to the frame of the rotary actuator for selectively rotating the shaft from one of its two positions to the other position upon the application of heat to one of the heat extensible springs. The heat extensible springs are preferably constructed from the alloy 55-Nitinol. In the preferred embodiment, a detent mechanism is provided for locking the rotatable shaft in its two rotary positions

Hermite Polynomials and Sylvester Type Determinants

In this paper, we first recall Hermite polynomials, a particular family of orthogonal polynomials. We then evaluate their recurrence relations in terms of Sylvester type determinants of certain tridiagnoal matrix

The MJS-77 magnetometer actuator

A two-position (0 deg and 180 deg) actuating mechanism (flipper) driven by alternately-heated wax motors (pellets) will be used to rotate the low field triaxial fluxgate magnetometer experiment on the 1977 Mariner Jupiter-Saturn spacecraft to its 0 deg and 180 deg positions. The magnetic field, power requirements, weight and volume of this device are very restrictive. The problems encountered in design and development of this mechanism are presented

A new concept for actuating space mechanisms

A two position (0 and 180 deg) actuating mechanism driven by two alternately heated opposing flat NITINOL springs is proposed for rotating the low field triaxial fluxgate magnetometer experiment on the 1977 Mariner Jupiter-Saturn spacecraft to its 0 deg and 180 deg positions. The magnetic field, power requirements, weight, and volume of this device are very restrictive. The problems encountered in design and development are presented

A Marxist De-Lutheranization of the German Reformation

In 1947, when the rebuilding of a Europe ravaged by world war had only begun, a classical study of Thomas Müntzer appeared in Russia by the eminent historian, Moisei Mendelevich Smirin, entitled Nordnaja reformazija T. Mjunzera I welikaja krestjanskaja wojna. Five years later it was translated into German, and in 1956 it was enlarged and rcvised. Smirin\u27s effort earncd him not only the Stalin prize, second class, but also acceptance as the orthodox voice in the confirmation of the Müntzer legend. Friedrich Engels in 1850 had baptized Münrzer\u27s role in the German Reformation in the pure mainstream of Marxist history. Disciples of Marx, representing varied degrees of commitment, continued the Müntzerian hagiography: August Bebel, Karl Kautsky, Franz Mehring and Ernst Bloch

Some Common Internal Parasites (Worms) of Hogs and Their Treatment

Next to hog cholera, probably no subject Is of greater Importance to swine raisers than that of worms In hogs. Intestinal worms In bogs Is a common condition. An understanding of the mode of Infestation and the methods of prevention and treating these common parasites will largely prevent losses from worms In swine herds. In this bulletin the more common types of worms affecting bogs are described and suitable remedies are suggested. The reader Is urged to make certain, it possible, the nature of the affection before applying; the treatment. Complicated or difficult diagnosis should be referred to competent veterinarians In order to secure the best results. The descriptive material on the following pages Is too brief and Incomplete to be of value except in ordinary affections, such as are too often overlooked, or subjected to home treatment, or perhaps escape treatment entirely

Facts About So-Called Hog Cholera Cures and Specifics

Although many so-called hog cholera cures and specifics are widely advertised, none has been found so far In the tests made by the veterinary section or the Iowa Agricultural Experiment Station which will cure bogs affected with cholera. Furthermore, the only product known at the present time which will Immunize hogs against cholera Is the anti-hog cholera serum produced by the Niles-Dorset method

Transitions Induced by the Discreteness of Molecules in a Small Autocatalytic System

Autocatalytic reaction system with a small number of molecules is studied numerically by stochastic particle simulations. A novel state due to fluctuation and discreteness in molecular numbers is found, characterized as extinction of molecule species alternately in the autocatalytic reaction loop. Phase transition to this state with the change of the system size and flow is studied, while a single-molecule switch of the molecule distributions is reported. Relevance of the results to intracellular processes are briefly discussed.Comment: 5 pages, 4 figure

Arabeske

https://digitalcommons.library.umaine.edu/mmb-ps/3514/thumbnail.jp

The Pretty Tyrolese : Ilsa

https://digitalcommons.library.umaine.edu/mmb-vp/2404/thumbnail.jp