INFLUENCE OF THE GALLIUM-ARSENIDE (Ga-As) LASER THERAPY ON THE POSTLAMINECTOMY MEMBRANE FORMATION: QUANTITATIVE EVALUATION

Abstract Introduction: Low intensity laser therapy has proven effective in treating different tissues, reducing inflammation, preventing the formation of fibrous tissue, and promoting muscle regeneration. Objective: To evaluate the effect of low intensity laser therapy, seven days after the injury, and verify whether the radiated energy chosen influences the formation of fibrous tissue. Methods: Thirty Wistar rats, adult male, average body weight 210-340 g were used. The animals were randomized into three groups: control group, untreated injured group (L), and injured and treated group (LT). After anesthetizing the animals, muscle injury was induced by freezing (cryoinjury) in the central region of the tibialis anterior muscle belly (TA) on the left hind limb, through an iron rod previously immersed in liquid nitrogen. A Gallium Arsenide laser, wavelength 904 nm was used. The applications were initiated 24 hours after injury, daily, for five days, at two points in the lesion area. After 7 days, the animals were euthanized; the TA muscle of the left hind limb was removed and frozen in liquid nitrogen and the obtained histological sections were subjected to Sirius Red staining. Results: Histological analysis showed no significant difference in relation to the area of fibrosis in the LT and L groups. Conclusion: The results suggest that the energy density of 69 J/cm² and final energy (4.8 joules) did not promote alterations in the area of collagen in the skeletal muscle extracellular matrix.

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THE ANALGESIC EFFECT OF 904 nm GALLIUM ARSENIDE SEMICONDUCTOR LOW LEVEL LASER THERAPY (LLLT) ON OSTEOARTICULAR PAIN: A REPORT ON 938 IRRADIATED PATIENTS

LASER THERAPY ◽

10.5978/islsm.95-or-11 ◽

1995 ◽

Vol 7 (2) ◽

pp. 75-80 ◽

Cited By ~ 5

Author(s):

Fernando Antonio Soriano

Keyword(s):

Gallium Arsenide ◽

Laser Therapy ◽

Analgesic Effect ◽

Low Level Laser Therapy ◽

Low Level ◽

Low Level Laser ◽

Level Laser

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Calculation of the Rate of Helium Ion Dispersion in Gallium Arsenide Compound

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.705.179 ◽

2016 ◽

Vol 705 ◽

pp. 179-185 ◽

Cited By ~ 1

Author(s):

Haider F. Abdul Amir ◽

Abu Hassan ◽

Afishah Alias ◽

Fuei Pien Chee

Keyword(s):

Gallium Arsenide ◽

Quantitative Evaluation ◽

Electronic Excitation ◽

Order Effects ◽

Angle Of Incidence ◽

Helium Ions ◽

First Order ◽

Slowing Down ◽

Helium Ion ◽

Lattice Damage

Nuclear dispersion is an important aspect in the process of slowing down ions by transferring their momentum to the target atoms and in determining path of the ion. This paper concerns the quantitative evaluation of the mechanism at which helium ions lose their energy when penetrate into a solid and the eventual distribution of the helium ion while stopping inside the Gallium Arsenide compound (GaAs). The first order effects of the atoms of the compound such as the electronic excitation of the atom, the lattice damage incurred to it, as well as the production of phonons in Gallium Arsenide due to the helium ions are also taken into account. The main finding is the mechanism of penetration of helium ions in GaAs, which is affected by the energy, the angle of incidence, and penetration density of the helium ions. It is found out that the energy has major impact than the angle of incidence in the interaction.

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