Use of Gamma Radiation for the Destruction of Wood-boring Insects

Bletchly, J. D.; Fisher, Ronald C.

doi:10.1038/179670a0

Cited by 21 publications

(4 citation statements)

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“…The use of very high doses has been suggested as a control measure by Hassett and Jenkins (1952) who observed that 65,000 r could serve as a quick knockdown dose for control of most insects. Bletchly and Fisher (1957) found lyctus suid Anobium beetles could be controlled in situ by a dose of 48,000 r.…”

Section: The Effects Of Radiation On Stages Of the Life Qyclementioning

confidence: 93%

The effect of cobalt 60 gamma rays on the biology of the eye gnat Hippelates Pusio Loew / by Hollis Mitchell Flint.

Flint¹

1964

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C33romosames of H. pusio^2 Recent developments with compounds called chemicaJ. sterilants have overshadowed the use of radiation for inducing sterility in insects. But the use of radiation to sterilize insects may have advaxita^es over the use of chemicals (Von Borstel, I96O) in that radiation doses can be controlled very acctirately, affects only the desired insect si)ecies, and does not cause dangerous contamination. Radiation sterilization programs need not be concerned with insect resistance, residue hazards, axid detrimental effects on fish and wildlife. Response to radiation in insects may be immediate as with cessation of growth (Grosch, 195^) or apparent after longer periods such as shortening of the life span, reduction of fertility and fecimdity, and failure to react normally to the environment. Subtle changes occur in the physiology and genetic transfer mechanism in the irradiated insect. Research employing radiation effects have followed two main trends. These include application of radiation to insect control and fundamental studies in genetics and cytology. The numbers of species used in all radiation studies have been relatively few. The author has been unable to find any literattire on the effects of radiation on H. pusio. The objective of this study is to provide basic biological information concerning the effects of radiation on the eye gnat. The studies reported here deal specifically with: (l) the sterilizing dose for each sex treated in both the pupal and the adult sta^e, (2) the effects of the sterilizing dose on male competitiveness when treated in the pupal and the adult stage, (3) the lethal effects of radiation on the stages of the life cycle, and {h) the determination of the morphological and cytological effects of gamma radiation on the reproductive organs.

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Section: The Effects Of Radiation On Stages Of the Life Qyclementioning

confidence: 93%

The effect of cobalt 60 gamma rays on the biology of the eye gnat Hippelates Pusio Loew / by Hollis Mitchell Flint.

Flint¹

1964

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“…The dose ranges for treatment are based on experience in radiation treatment of food, pharmaceutics and medical devices and they are selected according to the biodegradant type. This is the reason why most of the published research on the subject of CH treatment using gamma irradiation has also been done from the microbiological point of view [Bletchly et al 1957, Briški et al 2001, Petushkova et al 1988. To comply with restores criteria it is necessary to confirm no irreversible change occurred in the treated object.…”

Section: Introductionmentioning

confidence: 99%

Ornaments in radiation treatment of cultural heritage: Color and UV–vis spectral changes in irradiated nacres

Marušić

Pucić

Desnica

2016

Radiation Physics and Chemistry

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Cultural heritage objects that are radiation treated in order to stop their biodegradation often contain ornamenting materials that cannot be removed. Radiation may produce unwanted changes to such materials. Nacre is a common ornamenting material so this is an attempt to assess the impact of gamma-radiation on its optical properties. Two types of nacre (yellow and white) were obtained from a museum and subjected to different absorbed doses of Co-60 gamma irradiation under the same conditions. The radiation induced changes of nacres color were investigated with fiber optic reflectance spectroscopy (FORS). Colorimetry in CIE Lab space revealed that in both nacres the lightness shifted to darker grey hues at high doses while the color component's (red, green, yellow and blue) behavior depended on the nacre type. Observable changes occurred at doses much above the dose range needed for radiation treatment of cultural heritage objects that are often ornamented with nacre. In UV-Vis reflectance spectra of samples irradiated to high doses carbonate radical anion absorption appeared.

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“…), on the death-watch beetle and to a small extent on the house longhorn beetle (Hylotrupes bujulus L.). Progress reports on these investigations have been published (Bletchly, 1958;Bletchly & Fisher, 1957;For. Prod.…”

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confidence: 99%