Results 111 to 120 of about 16,522 (164)

Multifrequency band earth station feed design

International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990
The authors present a dual-polarized frequency reuse feed that not only operates in the C-, X-, and Ku-bands but also has significantly extended bandwidths, >800 MHz in C-band and >1.5 GHz in Ku-band. Design issues are discussed, and measurement results are presented. The feed was retrofitted on a 13-m Cassegrain antenna.
K.K. Chan, S.R. Gauthier, G. Dinham
openaire   +1 more source

Operant Performance at a Feeding Station in Rural Pennsylvania

The Psychological Record, 1982
Frequencies of operant responses for food, feeding bouts, and pecks at a food hopper were recorded in three successive winters at a rural feeding station for a mixed-species flock of wild passerine birds. Only one species in each winter performed the operant response, while nine other species did not work for the food they took, and thus benefited from
openaire   +1 more source

Feeding station behavior of free-grazing sheep

Applied Animal Behaviour Science, 1989
A study was conducted in the Middle Atlas Region, Morocco, to investigate the feeding station (FS) behavior of free-grazing sheep during November 1986 and April, June and September 1987. Behaviors observed and recorded were number of FS min−1, time elapsed per FS (T/FS), bites/FS and dry matter intake per FS (DMI/FS). The number of FS min−1 was highest
A. El Aich, A. Moukadem, L.R. Rittenhouse   +2 more
openaire   +1 more source

Initial experiments with an electronic feeding station for ewes

Acta Agriculturae Scandinavica, Section A — Animal Science, 2014
AbstractThrough four different experiments we investigated the effect of design of an electronic feeding station (EFS) and management factors on the behaviour of ewes. Eighty-nine percent of the ewes had completed their first visit to the EFS within the first six hours, but a major proportion of all rewarded visits were interrupted by displacements ...
G. H. M. Jørgensen, K. E. Bøe
openaire   +1 more source

Lamb Feeding Experiments at the Irrigation Branch Station

1922
Topics include Introduction, Plan and Description of Experiment, Part I, Part II Light and Heavy Grain Rations Compared, Part III A Study of the Value of Silage in Lamb Rations, Part IV Beet Molasses Compared with Corn when it Replaces One-third of the Concentrates, and Summary.
Hackedorn, H., Bean, R., Sotola, J.
openaire   +2 more sources

A Method of Training Bees to Visit a Feeding Station

Bee World, 1961
(1961). A Method of Training Bees to Visit a Feeding Station. Bee World: Vol. 42, No. 1, pp. 8-11.
openaire   +1 more source

Design and Construction of Power Station Feed Heaters

Proceedings of the Institution of Mechanical Engineers, 1960
The paper presents a survey of a number of aspects of the design and construction of feed heaters for present-day steam-turbine cycles. Many papers have been published in recent years which cover a variety of the detail factors which can enter into the design of a feed heater (for example, the design of tube plates).
openaire   +1 more source

[Feeding of the crew of the Saliut-7 orbital station].

Kosmicheskaia biologiia i aviakosmicheskaia meditsina, 1990
This paper presents physiological and hygienic evaluations of the food supply of Salyut-7 crews in normal conditions, simulation and actual flights of various duration (211, 150, 237, 165 and 126 days). The examinations have shown that the diets used have provided satisfactory health conditions and good nutritional status of the crewmembers.
V P, Bychkov, S, Kalandarov, A N, Agureev, I G, Popov, , Kochetkova   +4 more
openaire   +1 more source

Feeding Concepts for Manned Space Stations

Journal of the American Dietetic Association, 1964
B, FINKELSTEIN, J J, SYMONS
openaire   +2 more sources

Programme Feeds to the Digital Terrestrial Transmitting Stations

1998
Satellites are considered to be the best solution as a means for feeding terrestrial single-frequency networks both from the point of view of technology and of economics. Alternative solutions are microwave and fibre-optical links. The tasks are the same or similar, especially with respect to bit-synchronous radiation, but in the case of switched ...
openaire   +1 more source