An inexpensive, efficient cage for small birds
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چکیده
منابع مشابه
A Simple and Inexpensive Flea-Proof Cage
a platform of wire mesh (4 to the inch) is arranged inside the cage. A removable lid about 1^ inches deep is prepared. A third of this lid is cut away and fine-meshed (40 to the inch) good quality copper or brass gauze is fixed by soldering, or better still by soldering a strip of tin over the free edges. A shallow (about \ inch deep) removable tray is fitted near the bottom of the tin and the ...
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Senegal is one of the world's principal exporters of cage birds. The estimated value to Senegal of this trade is equivalent to U.S. $500,000 annually. Between 1979 and 1981, over one million birds were exported annually to at least 26 countries. During this period, the Government of Senegal proposed policy guidelines and legislative changes to rationally manage this important industry.
متن کاملan iranian simple, inexpensive and programmable motor – driven treadmill for exercising small laboratory rodents
nowadays, research on exercise physiology has developed. many of studies try to discover body responses or adaptations to exercise training or physical activity. in many cases, human beings are not suitable models to study these mechanisms in vivo due to ethical and legal limitations. laboratory animals especially mice and rats are appropriate models for these researches. treadmill is an excell...
متن کاملAn Inexpensive Terrain Awareness and Warning System for Small Aircraft
For pilots the importance of knowing their height (distance above the ground) cannot be minimized. An error in determining height can easily prove fatal. Commercial and military aircraft usually have radio altimeters to determine their height. These units cost in the thousands of dollars, are a structural part of the aircraft, and require FAA approval. However, radio altimeters are generally no...
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ژورنال
عنوان ژورنال: Behavior Research Methods & Instrumentation
سال: 1973
ISSN: 1554-351X,1554-3528
DOI: 10.3758/bf03200205