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Sliding Down Inclines with Fixed Descent Time: a Converse to Galileo's Law of Chords
https://cms.math.ca/crux/v34/n8/page481-482.pd
Tree Fruits for Alaska
This circular has been prepared with three major objectives in mind.
1) to define areas in which tree fruit culture is possible in Alaska and
the types of fruit that can be grown in each, 2) to name and describe
the varieties that at the present time seem more desirable for planting
in Alaska, and 3) to point out the m?-in problems limiting tree fruit culture
and suggest, rather than discuss, the probable means by which they may
one day be solved.
Fulfilling the first two of these objectives was a relatively simple
matter, since it was only a matter of defining and description. But the
third objective was not-and is not-so easy of attainment. In what may
be an oversimplification, it has been stated that there are two main problems,
winter hardiness and earliness of maturity, and methods have been
indicated by which, it is believed, each may be overcome.
However the very problems themselves are not as simple as they
have been made to appear. That of winter hardiness is one of the most
widely debated and investigated subject in plant science. And the characterization
of the second as "earliness of maturity" makes it sound too
simple, for actually the factor involved, as it applies to fruit growing in
Alaska is aiding or hastening natural earliness of maturity. This is a far
more complex matter.
In describing the solutions of these problems, mention has been
made of such factors as pruning and training, fertilization, furnishing
protection to increase available heat, and limiting the water supply to the
trees during the period of fruit maturation. Each of these subjects has
also been the subject of numerous investigations and some of them
have been the subject of textbooks. The discussion of them here has been
limited to simple statements as to their merit in achieving specific
objectives.
Most of the statements made are based on research in Alaska. In
one particular, however, they have knowingly been extended beyond the
domain of research-supported conclusion. This is in advocating the withholding
Qr decreasing water available to the trees during the maturation
of the fruit. Some will disagree with this recommendation, for it runs
counter to what is considered good orchard management in commercial
fruit producing regions of the world. In these an ample water supply
is advocated for this period to increase fruit size and heighten, though
not to increase, coloration. In Alaska both considerations should
be waived in favor of obtaining reasonable yields of fruit, suitable for culinary purposes.In all three regions of Alaska
where tree fruit production is at all
possible, lack of winter hardiness in
the trees and failure of fruit to mature
properly are the two chief
limiting factors
Technique for stripping Teflon insulated wire
Cryogenic stripping of Teflon insulated wire leaves no residue and produces no physical damage. After the wire is immersed in liquid nitrogen, bent slightly, and returned to room temperature, the Teflon is removed by fingernails or flat-nosed pliers
Method and apparatus for cryogenic wire stripping Patent
Method and apparatus for removing plastic insulation from wire using cryogenic equipmen
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