scholarly journals ФІЗІОЛОГІЧНІ МЕХАНІЗМИ ДІЇ ПОЛІХРОМАТИЧНОГО ПОЛЯРИЗОВАНОГО СВІТЛА ПРИ УШКОДЖЕННЯХ ШКІРИ ВИСОКОЮ ТЕМПЕРАТУРОЮ

2016 ◽  
Author(s):  
S. O. Gulyar ◽  
Yu. I. Strelchenko ◽  
V. M. Jelskyj
Keyword(s):  
Process Development ◽  
Polarized Light ◽  
Positive Influence ◽  
Wound Surface ◽  
Burn Wound ◽  
Secondary Alteration ◽  
Open Flame ◽  
Basic Parameters ◽  
Inflammation Reaction ◽  
Stimulation Of

We developed a valid experimental model of dosed burn to study the influence of polarized light on burns, obtained from open flame, with a possibility of their basic parameters regulation. In the article there are characterized the expression and peculiarities of inflammation reaction process, development and dynamics of granulation growth and the process of burn wound epithelization. We observed polarized light positive influence on burn wound regeneration and speed of its healing. In particular, we singled out: derma depth alteration restriction and secondary alteration of skin tissues and sub muscles, activation of mechanisms, that restrict inflammation, fibroblasts proliferation increase, formation of granulations and neo-angiogenesis, stimulation of proliferation, keratinocytes' migration and wound surface epithelialization under the influence of polarized light. We singled out expressed antinociceptive, anti-stress and adaptive-stimulating effects of polarized light on central nervous system functional state at burns.

scholarly journals ВПЛИВ ПОЛІХРОМАТИЧНОГО ПОЛЯРИЗОВАНОГО СВІТЛА В ПОЄДНАННІ З БЛИЖНІМ ІНФРАЧЕРВОНИМ ВИПРОМІНЮВАННЯМ НА НЕЙРОГУМОРАЛЬНІ, ІМУННІ ТА ТКАНИННІ ЗМІНИ ПРИ ОПІКОВІЙ ТРАВМІ

2016 ◽  
Author(s):  
S. O. Gulyar ◽  
Yu. I. Strelchenko ◽  
V. M. Jelskii
Keyword(s):  
Functional State ◽  
Experimental Studies ◽  
Polarized Light ◽  
Positive Influence ◽  
Wound Surface ◽  
Secondary Alteration ◽  
Open Flame ◽  
Central Nerve System ◽  
Nerve System ◽  
Stimulation Of

<p>We performed experimental studies on rats who received dosed influence by open flame on the skin. We observed polarized light positive influence on central nerve system functional state at burns. There activated anti-stress and adaptive stimulating mechanisms. We singled out, that under the influence of polarized light, there occurs accelerated restriction of derma depth alteration restriction and skin tissues secondary alteration and sub muscles. We singled out activation of mechanisms that restrict inflammation, fibroblasts proliferation increase. We observed it on the background of stimulation of granulations formation and neoangiogenesis, stimulation of keratocytes migration and wound surface epithelialization.</p>

Orientational Movements of the Foot of Littorina Species in Relation to the Plane of Vibration of Polarized Light

1961 ◽  
Vol 38 (1) ◽  
pp. 213-224
Author(s):  
G. H. CHARLES
Keyword(s):  
Polarized Light ◽  
Angle Of Incidence ◽  
Virtual Absence ◽  
Lens Aperture ◽  
Light Rays ◽  
Stimulation Of

1. Littorina littoralis (L.), L. saxatilis (L.), L. neritoides (L.) and L. littorea (L.) responded to the plane of vibration (e vector) of polarized light directly incident upon their eyes in the virtual absence of any substrate reflexions. Photonegative winkles orientated parallel with the plane of vibration and photopositive individuals at right angles to this plane. 2. Decrease of the angle of incidence towards zero of polarized light rays incident upon the lens aperture of Littorina littoralis completely destroyed the ability to orientate to the plane of vibration. This can be explained on the basis of a Fresnel reflexion/refraction mechanism of orientation. 3. Unilaterally blinded Littorina littoralis gave just as good an orientation to vertical rays of polarized light as winkles with intact vision. 4. It is concluded that the eyes of Littorina species are capable of detecting the plane of vibration of polarized light directly incident from above by means of a Fresnel reflexion/refraction mechanism, and that orientation does not depend on balanced stimulation of the two eyes.

Purulent septic infections in patients with severe burn injuries. Etiology, prevalence, and risk factors

2020 ◽  
Vol 18 (3) ◽  
pp. 98-103
Author(s):  
Yu.Yu. Kutlaeva ◽  
◽  
A.A. Golubkova ◽  
V.A. Bagin ◽  
◽  
...  
Keyword(s):  
Risk Factors ◽  
Burn Injury ◽  
Venous Catheter ◽  
Severity Index ◽  
Burn Injuries ◽  
Burn Wound ◽  
Open Flame ◽  
Burn Center ◽  
Increased Risk ◽  
Epidemiological Characteristics

Objective. To assess epidemiological characteristics of purulent septic infections (PSIs) in the intensive care unit (ICU) of a burn center. Patients and methods. In this retrospective epidemiological study, we analyzed medical records of 399 patients with burn injuries and the results of laboratory testing (2,572 samples). The majority of ICU patients were men aged 30–39 years. Almost half of the patients were workers. Burns were primarily caused by an open flame and were mainly received at home. Of note, 45.4% of patients who had burns caused by an open flame also had respiratory tract lesions. More than half of the patients had deep burns. A total of 18.6% of patients (95% CI 14.8–22.7) died. Results. The incidence of PSIs in the ICU of the burn center was 533,8‰ (95% CI 483.5–583.6), which is 2.5 times higher than that in the official statistics (210,1‰ (95% CI 182.5–239.9)). More than half of PSIs (50.2% (95% CI 43.3–57.1)) were burn wound infections. Conclusion. The following factors were found to be associated with an increased risk of PSIs: burn area >40%, burn severity index >30, SOFA score >4, deep burns, surgery, stay in the ICU for >10 days, artificial ventilation for >1 day, and placement of a central venous catheter or an urinary catheter for >1 day. Most frequently, PSIs were caused by non-fermenting gram-negative bacteria such as Pseudomonas аeruginosa and Acinetobacter baumannii. Key words: burn injury, purulent septic infections, risk factors, infection control

scholarly journals Silver Nanoparticles Can Relieve Progressive Necrosis by Regulating Macrophage Activation in Burn Wounds

2021 ◽  
Author(s):  
Chuangang You ◽  
Shuangshuang Wang ◽  
Qiong Li ◽  
Songxue Guo ◽  
Abidullah Khan ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Macrophage Activation ◽  
Positive Influence ◽  
Histological Evaluation ◽  
M2 Macrophage ◽  
Burn Wound ◽  
M1 Macrophage ◽  
Progressive Necrosis ◽  
Very High ◽  
Made In

Abstract Purpose: To investigat the positive influence of AgNP on preventing early burn-wound progression.Patients and methods: After a deep burn, progression of burns may occur in the initial or surrounding area，even after thermal factors have been removed. Due to the influence of many factors such as residual heat, the risk of burn stagnant area deterioration is very high which is considered to be salvable. Silver nanoparticles (AgNP), which has been wide used in burns, is a strong antibacterial agent that has been reported to regulate inflammation. Hence, to investigat the positive influence of AgNP on avoid early burn wound progressive deterioration, a isomorphic “comb” burn animal model was made in this study which were treated with silver nanoparticles. The wound tissues were taken for molecular biological and histological evaluation, which revealed that AgNP alleviated histological deterioration in burn stagnant area. Results: Furthermore, AgNP can alleviate the early progressive necrosis and inflammatory response of burn wound, which was accociated with excitation in M2 macrophage and a suppression of M1 macrophage.Conclusion: In conclusion, we demonstrate that AgNP has a protective effect on acute burn wound deterioration in a rat model. It might be regulated by the macrophage activation-induced inflammation and apoptosis.

scholarly journals Rapid method for evaluation of cure kinetics of thermoseting polymers

2013 ◽  
Vol 32 (1) ◽  
pp. 337 ◽  
Author(s):  
Gordana Bogoeva-Gaceva ◽  
Aleksandra Buzarovska
Keyword(s):  
Kinetic Model ◽  
Rapid Method ◽  
Process Development ◽  
Cure Kinetics ◽  
Cure Reaction ◽  
Dsc Measurements ◽  
Basic Parameters ◽  
Product And Process ◽  
Kinetics Of

AbstractIn this study we report the results of a rapid method applied for evaluation of the data obtained by DSC measurements of cure reaction of thermosetting resins. The method is based on Borchardt and Daniels kinetic model and enables determination of basic parameters important for product and process development, but also for optimization of cure cycles for variety of thermosets.

Stimulation of glucose oxidase with white linearly polarized light

2009 ◽  
pp. NA-NA
Author(s):  
Anna Konieczna-Molenda ◽  
Maciej Fiedorowicz ◽  
Przemysław J. Tomasik
Keyword(s):  
Glucose Oxidase ◽  
Polarized Light ◽  
Linearly Polarized ◽  
Stimulation Of

Stimulation of C14-histidine incorporation into protein of isolated diaphragm by nonutilized sugars

1960 ◽  
Vol 198 (1) ◽  
pp. 57-59 ◽  
Author(s):  
Ira G. Wool
Keyword(s):  
Protein Synthesis ◽  
Glucose Concentration ◽  
Protein Metabolism ◽  
Incubation Medium ◽  
Muscle Protein ◽  
Positive Influence ◽  
Effect Of Glucose ◽  
Stimulation Of

The effect of various sugars on protein synthesis was studied by measuring the incorporation of C14-histidine into the protein of the isolated diaphragm. In diaphragms from rats fasted 48 hours, histidine-2-C14 incorporation into muscle protein is directly proportional to the glucose concentration in the incubation medium over the range 0–600 mg %. The ability of other sugars to reproduce this effect of glucose on C14-histidine incorporation into diaphragm protein was tested. The following were found to be as effective as glucose: d-mannose; d-xylose; d-ribose; l-sorbose. The following were without effect: d-galactose; d-fructose; 3-methyl glucose; d-arabinose; l-arabinose; l-xylose. Only 2-deoxy-d-glucose was inhibitory. The results indicate that sugars not appreciably utilized by muscle (i.e. d-xylose, d-ribose and l-sorbose) can increase protein synthesis. The findings do not support the theory that the positive influence of carbohydrate on protein metabolism derives solely from its ability to increase the energy available for protein synthesis.

scholarly journals Ellipsometry as an express method for determining the pore parameters of ion-track SiO2 templates on a silicon substrate

2019 ◽  
Vol 201 ◽  
pp. 01001 ◽  
Author(s):  
Victoria Bundyukova ◽  
Egor Kaniukov ◽  
Alena Shumskaya ◽  
Andrey Smirnov ◽  
Maksim Kravchenko ◽  
...  
Keyword(s):  
Silicon Oxide ◽  
Polarized Light ◽  
Non Destructive Testing ◽  
Large Area ◽  
Destructive Testing ◽  
Rapid Control ◽  
The Standard Model ◽  
Basic Parameters ◽  
Effective Development ◽  
Non Destructive

Due to the effective development of ion-track technology, it became possible to produce porous templates with large areas, which are of interest for mass production of nanostructures. Given that the template parameters often define properties of the resulting nanostructures and nanosystems, a reliable method for non-destructive testing is needed for a rapid control of template parameters. Such method could be ellipsometry, allowing for a single measurement to collect statistical information from a large area and to save time for certification. In order to adapt the ellipsometry method for controlling the parameters of ion-track patterns, the first studies of SiO2/Si templates with low porosity were carried out. Using the standard model of the interaction of a polarized light beam with a layered structure of silicon oxide on silicon, the basic parameters of the pores were determined by means of mathematical transformations and subsequently compared with the results of scanning electron microscopy.

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