RU129761U1 - ANIMAL UV RADIATION DEVICE - Google Patents

Abstract

A device for ultraviolet irradiation of animals, including an emitter that provides ultraviolet radiation of physiologically active action and a power source, characterized in that the emitter contains a barrier discharge lamp on working XeCl * molecules with radiation in the wavelength range of 280-320 nm.

Description

The utility model relates to agriculture and veterinary medicine, namely, to technological processes for keeping animals, for example, laboratory, or kept in enclosures, in particular, to devices for ultraviolet irradiation of animals.

The influence of ultraviolet radiation on animals is widely known to increase immunity, preventive effects, increase productivity, etc. [one].

It is known to use gas-discharge mercury-quartz lamps (brand DRT), providing ultraviolet radiation in the wavelength region λ = 240-320 nm for irradiation of animals [2]. A serious drawback of these devices is the presence of mercury in the working environment of the emitter, which makes them unsafe for use in agricultural institutions, since in the case of depressurization of the flask, demercurization of the premises is required. In addition, the use of mercury lamps requires a special and expensive procedure for the disposal of spent flasks [3]. Therefore, for example, in the EU countries since 2009, the phased removal of mercury-containing lamps from the production cycle has been launched. In addition, in the radiation spectrum of DRT lamps, a large fraction of the energy is emitted at wavelengths λ <290-295 nm, which, as you know, increases the risk of skin actinic carotoses and irritates the mucous membranes, has a toxic effect.

The closest analogue of the device are gas-discharge mercury-quartz erythema lamps (LE grade) with radiation in the UVB region (280-315 nm) for irradiation of animals, and the fraction of radiation at λ <290-295 nm in these lamps is less than that of DRT lamps at order. Erythemal irradiation normalizes mineral metabolism, increases the immunobiological stability of the body, and helps increase animal productivity [4]. The disadvantage of this device is the presence of mercury in the flask.

A common drawback of both devices is the increased requirements for electrical safety (the current flowing through the devices is several amperes). When working with live objects, compliance with safety rules is especially important.

The objective of the utility model is to avoid lamps containing mercury, to ensure the safety of the device and a favorable physiological effect, including non-toxic effects.

This problem is achieved due to the fact that the device for irradiating animals, including an emitter that provides ultraviolet radiation of physiologically active action and a power source, according to the technical solution, contains as an emitter a lamp of a barrier discharge on working XeCl * molecules with radiation in the wavelength range of 280- 320 nm.

The lamp used is characterized by a molecular emission spectrum corresponding to a physiologically active region of wavelengths, namely, an intense band B → X of electron-vibrational transitions of the XeCl * molecule, with a maximum at λ = 308 nm. The erythema region of the spectrum accounts for 93-97% of the radiant flux in the ultraviolet region of the spectrum.

Structurally, barrier discharge lamps are bulbs of a dielectric material transparent at the working wavelength, on the surface of which there are metal electrodes to which a pulse or sinusoidal voltage with frequencies from a few Hz to several MHz is applied. The designs of these devices can be different (coaxial, planar, cylindrical) depending on the pressure of the working medium, the amplitude and frequency of the applied voltage. Breakdown is carried out between dielectric barriers, creating a nonequilibrium plasma, the electron energy of which can reach several electron-volts, while the characteristic temperature of heavy particles is comparable to the temperature of dielectric barriers and does not exceed, as a rule, 100 ° C. Using a barrier discharge ensures the purity of the spectra radiation, durability of the working environment, electrical safety of operation (which is associated with small amounts of current - up to ten mA). In addition, the specified working environment does not contain mercury.

The physiological effect of the radiation of the proposed device was determined on outbred white mice, namely, on two groups of mice - control and experimental. The mice of the experimental group were irradiated with the proposed irradiator on a working XeCl * molecule. The device consisted of a power source and a radiator providing an energy luminosity of 35 mW / cm ² with a power consumption of 35 watts. One irradiation was performed every day. The exposure time varied: in the first session, it was 0.5 min, then increased to 7.5 minutes, then again decreased to a minimum. The experiment was carried out for a week. The total dose was 10.1 J. Setting the dose and time of exposure, we proceeded from the practice of irradiation of animals with hair. During the experiment, the appearance and behavior (ethology) of animals, the state of the coat and visible mucous membranes were monitored. The time of onset of clinical signs uncharacteristic for animals from the control was noted. We studied muscle activity (method of M.L. Rybalova), the work of smooth muscles of the intestine (method N.I.Sharapova). An anatomical study was also carried out on the 30th day after the end of the experiment. As a result, no toxic and embryotoxic, skin-disruptive and allergic effects of radiation were detected. A physiological increase in live weight by 2.6-3.1% was shown, a tendency to an increase in motor activity was revealed (the swimming time of experimental mice exceeds it for the control group by 18.3% or 0.9 minutes), an increase in respiratory function and increased gastric motility were confirmed. A study of the embryotoxic effect showed that radiation predisposes to multiple pregnancy of animals.

Thus, the proposed solution allows the use of an environmentally friendly working environment of emitters, dramatically reduces the risk of carcinogenesis and skin irritation of animals, increases the safety of working with the device and has a favorable physiological effect on the animal organism.

Literature

1. Recommendations on ultraviolet irradiation of farm animals and birds. M.: Publishing House of the Academy of Sciences of the USSR, 1962. - 32 p.

2. Mamukaev M.N., Tokhtiev T.A., Arsagov V.A. Patent RU 2393667 // Published: 07/10/2010. Bull. No. 19.

3. Wolsey R. The Lamp Disposal Controversy // Lighting Futures. - 1998. - V.3. - No. 2. - P. 1-4.

4. Guidelines for the use of optical radiation for the treatment and prevention of animal diseases. M .: VASKHNIL, 1981. - 70 p.

Claims (1)

A device for ultraviolet irradiation of animals, including an emitter that provides ultraviolet radiation of physiologically active action and a power source, characterized in that the emitter contains a barrier discharge lamp on working XeCl * molecules with radiation in the wavelength range of 280-320 nm.