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Journal articles on the topic 'Ultraviolet radiations'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

D., Chandana*1 Swarna Kumari Donakanti2 Vinutha Dasaram3. "Ultraviolet Spectroscopy." International Journal in Pharmaceutical Sciences 2, no. 6 (2024): 569–75. https://doi.org/10.5281/zenodo.11548466.

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Spectroscopy focuses on examining the interaction occurring between electromagnetic   radiation and matter, where the radiation’s wavelength operates as a function. Its advancement   has paved the way for analyzing the interaction occurring in different particles through dependence on collision energy. A particular beam of electromagnetic radiation is made to interact with a given sample. The electrons absorb the electromagnetic radiation, and they get excited. They move to the excited state from the ground state and further get de-excited when they return to their gr

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2

Rahul, G. Chaudhari* Akash Lilhare Ankush Sharnagat Abhishek Gajbhiye Anshul Shende Aaryansingh Chouhan. "Formulation, Characterization And In-Vitro Evaluation Of Sunscreen Cream By Using Juglans Regia And Carotenoids." International Journal in Pharmaceutical Sciences 2, no. 4 (2024): 665–74. https://doi.org/10.5281/zenodo.10974800.

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The sunlight consists of harmful radiations which affects the skin. The Ultraviolet radiations are of types Ultraviolet A, Ultraviolet B and Ultraviolet C. This article gives a detailed review on different types of Ultraviolet radiation. To protect our skin from Ultraviolet radiation sunscreen formulations are used which either absorbs scatters or reflects the radiation. The harmful effects on skin like photo aging, skin cancer, DNA damage are explained. This study aimed to formulate, characterize, and evaluate an innovative sunscreen cream enriched with from Juglans regia and carotenoids. The

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Ashraf, Muhammad Azeem, Amna Amjad, Assad Farooq, and Jawairia Umar Khan. "Pretreatment of Cotton with Different Radiations to Improve Colour Strength and Fastness Properties in Reactive Dyeing." Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 62, no. 3 (2019): 174–80. http://dx.doi.org/10.52763/pjsir.phys.sci.62.3.2019.174.180.

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Different types of radiations have been found to be widely applicable in modifying the properties of materials. In this work colour strength (K/S) and colour fastness of reactive dyed cotton fabric has been studied with the application of three radiations; microwave, ultraviolet and ultrasonic. Analysis of variance and comparison of mean values statistical tests were carried out to find out the effect of different radiation treatment time and fabric density on colour strength of cotton fabrics. The colour strength (K/S) of dyed fabric enhanced significantly by pretreatment with different radia

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Dr., Basanti Jain. "EFFECTS OF GLOBAL WARMING." International Journal of Research - GRANTHAALAYAH 3, no. 9 (Special Edition) (2017): 1–2. https://doi.org/10.5281/zenodo.852159.

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The abnormal increase in the concentration of the greenhouse gases is resulting in higher temperatures. We call this effect is global warming. The average temperature around the world has increased about 1'c over 140 years, 75% of this has risen just over the past 30 years. The solar radiation, as it reaches the earth, produces "greenhouse effect" in the atmosphere. The thick atmospheric layers over the earth behaves as a glass surface, as it permits short wave radiations from coming in, but checks the outgoing long wave ones. As a result, gradually the atmosphere gets heated up during the day

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Klein, Richard M. "Failure of Supplementary Ultraviolet Radiation to Enhance Flower Color under Greenhouse Conditions." HortScience 25, no. 3 (1990): 307–8. http://dx.doi.org/10.21273/hortsci.25.3.307.

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In order to determine whether the concentration of floral petal anthocyanin pigments could be increased, ultraviolet radiations in the UV-A and UV-B wavelength bands were presented to a variety of flowering plants to partly restore those wavelengths filtered out by greenhouse glass. In no tested plant did the supplementary ultraviolet radiation enhance floral anthocyanin content. Supplementary UV radiation has no economic value in greenhouse production of flowering plants.

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Jain, Basanti. "EFFECTS OF GLOBAL WARMING." International Journal of Research -GRANTHAALAYAH 3, no. 9SE (2015): 1–2. http://dx.doi.org/10.29121/granthaalayah.v3.i9se.2015.3116.

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The abnormal increase in the concentration of the greenhouse gases is resulting in higher temperatures. We call this effect is global warming. The average temperature around the world has increased about 1'c over 140 years, 75% of this has risen just over the past 30 years. The solar radiation, as it reaches the earth, produces "greenhouse effect" in the atmosphere. The thick atmospheric layers over the earth behaves as a glass surface, as it permits short wave radiations from coming in, but checks the outgoing long wave ones. As a result, gradually the atmosphere gets heated up during t

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Gag, O., M. Rivis, S. Dinu, D. Chioran, H. A. Stana, and R. A. Popovici. "An insight into the effect of ultraviolet radiation: from promotion of skin malignancies to use in dentistry." Medicine in Evolution 29, no. 2 (2023): 173–80. http://dx.doi.org/10.70921/medev.v29i2.1016.

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Exposure to ultraviolet radiation (UV) can occur either naturally - through exposure to solar radiation, or synthetically - through exposure to various devices that emit ultraviolet radiation. As far as the oral cavity is concerned, the oral cells meet solar ultraviolet radiation once the mouth is opened or with ultraviolet radiation applied with the help of devices used for diagnostic or treatment purposes in dental procedures. Ultraviolet radiation is on the list of recognized carcinogens (WHO, 2009) and specialist studies have highlighted the fact that oral cells are much more sensitive to

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8

Kumar, Sunil, and Priyanka Kumari. "High intensity ultraviolet radiation induced changes in aquatic arthropod with retene and riboflavin." Environment Conservation Journal 12, no. 3 (2011): 83–87. http://dx.doi.org/10.36953/ecj.2011.120316.

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Ozone depletion is resulting into increase in ultraviolet radiation level in the world. Exposure to UV radiation has been found to have negative effects on aquatic and terrestrial organisms. Adverse effect of natural solar and artificial ultraviolet-B and UV-A radiations was observed in crustacean species Daphnia magna in presence of retene and riboflavin. Daphnia magna exposed to artificial ultraviolet-B with retene causes maximum physiological changes and mortality, indicating that enhanced solar UV-B exposure could be lethal to aquatic fauna. Artificial UV-B had a stronger damaging effect t

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Yavaş, İlkay, Aydın Ünay, Shafaqat Ali, and Zohaib Abbas. "UV-B Radiations and Secondary Metabolites." Turkish Journal of Agriculture - Food Science and Technology 8, no. 1 (2020): 147. http://dx.doi.org/10.24925/turjaf.v8i1.147-157.2878.

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Ultraviolet-B (UV-B: 280 to 320 nm) radiations have appeared to be detrimental to plants, due to their damaging effects on proteins, lipids, membranes and DNA. UV-B radiations are a significant regulator of plants’ secondary metabolites. High intensity of ultraviolet radiations may interfere with growth and productivity of crops. But low levels of UV-B radiations give rise to changes in the plants’ secondary metabolites such as phenolic compounds, carotenoids and glucoseinolates. Therefore, low intensity of UV-B radiations may be used to generate plants, enriched with secondary metabolites, ha

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AlQahtani, Nouf Jubran, Amnah Nabil Bukair, Ghada Naje Alessa, Hoor Fayez AlDushaishi, and Syed Mehmood Ali. "Designing a Band for Vehicles’ Drivers Induced by Ultraviolet and Infrared Radiations." Dermatology Research and Practice 2022 (December 21, 2022): 1–17. http://dx.doi.org/10.1155/2022/7238905.

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Background. Solar radiations that reach the Earth can be divided into ultraviolet, visible light, and infrared. Overexposure to these radiations can facilitate adverse skin diseases such as sunburn, skin cancer, and photoaging. People who drive vehicles for an extended period are likely to develop skin cancer in the exposed body area. Method. This research proposes a wearable protective device around the upper arm to measure the transmitted radiation through the front and the side windows. A novel skin type classification algorithm using a color sensor was created to provide an accurate skin t

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Bulcha, Bekele, Jule Leta Tesfaye, Degefa Anatol, et al. "Synthesis of Zinc Oxide Nanoparticles by Hydrothermal Methods and Spectroscopic Investigation of Ultraviolet Radiation Protective Properties." Journal of Nanomaterials 2021 (September 22, 2021): 1–10. http://dx.doi.org/10.1155/2021/8617290.

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Ultraviolet radiation causes damages to the human body, such as skin ageing, skin cancer, and allergies throughout the world. Applying zinc oxide nanoparticles (ZnO NPs) in sunscreen products (like cloths or textiles) to protect human skin by absorbing the ultraviolet radiations that emerged from the sun. The main aim of this study is to investigate both absorbance and transmittance characteristics of the untreated and treated cotton textiles. For ZnO NPs using hydrothermal methods, they were made from Zn(NO3)2·6H2O and NaOH at a constant annealing temperature of 300°C. Fourier transform infra

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Saricam, Canan, Nazan Okur, and İkilem Göcek. "Functionalization of electrospun nanofibers by using titanium dioxide and 1,3,7-Trimethyl xanthine for developing ultraviolet protection." Journal of Industrial Textiles 50, no. 3 (2019): 398–414. http://dx.doi.org/10.1177/1528083719831088.

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In this study, the functionalization of nanofibers by incorporating different particles and additives into the polymeric matrix for developing ultraviolet protective materials was investigated. Titanium dioxide was selected because of its known characteristic of being a widely used material for obtaining ultraviolet protection. Besides, 1,3,7-Trimethyl xanthine, which was used previously in medical applications to decrease the harm of ultraviolet radiation on DNA, was used to see its potential in obtaining ultraviolet protective nanofibers. By using these two different additives in different c

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13

OMORUYI, C. I., I. M. OYEM, and A. A. ODAGWE. "IONIZING RADIATIONS AND CANCERS." African Journal of Health, Safety and Environment 4, no. 1 (2023): 132–40. http://dx.doi.org/10.52417/ajhse.v4i1.442.

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Ionizing radiations are types of energies that have sufficient force to remove electrons from atoms, creating ions in the process. They include all electromagnetic waves from ultraviolet light to x-rays and gamma rays as well as alpha to beta particles. Ionizing radiations results in harmful effects on living organisms such as damage of cell structures and DNA due to their ability to ionize atoms and molecules. This paper seeks to review the effects of these radiations and how to be protected in real time. Exposure to high levels of ionizing radiations cause immediate symptoms, such as burns,

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Saravanan, D. "UV PROTECTION TEXTILE MATERIALS." AUTEX Research Journal 7, no. 1 (2007): 53–62. http://dx.doi.org/10.1515/aut-2007-070106.

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Abstract Ultraviolet rays constitute a very low fraction in the solar spectrum but influence all living organisms and their metabolisms. These radiations can cause a range of effects from simple tanning to highly malignant skin cancers, if unprotected. Sunscreen lotions, clothing and shade structures provide protection from the deleterious effects of ultraviolet radiations. Alterations in the construction parameters of fabrics with appropriate light absorbers and suitable finishing methods can be employed as UV protection fabrics. This paper deals with the deleterious effects of UV rays and pr

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15

Tyrrell, Rex M. "Ultraviolet radiation and free radical damage to skin." Biochemical Society Symposia 61 (November 1, 1995): 47–53. http://dx.doi.org/10.1042/bss0610047.

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Solar UVB (290-320 nm) and particularly UVA (320-380 nm) radiations have a capacity to generate reactive chemical species, including free radicals, in cells. These intermediates have been shown to be involved in various biological effects in cultured human skin cells (e.g. cell death) and skin (e.g. erythema). Endogenous glutathione is a critical molecule in protection against the cytotoxic effects of both wavelength ranges. Although there is evidence from cellular studies for the involvement of an oxidative component of UVC/UVB radiations in activation of several genes, the doses used are gen

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16

Garima Negi, Geeta Bhandari. "In Vitro Evaluation of Sun Protection Factor of Plant Extracts By Ultraviolet Spectroscopy Method." Universities' Journal of Phytochemistry and Ayurvedic Heights 1, no. 30 (2021): 58–62. http://dx.doi.org/10.51129/ujpah-june2021-30-1(8).

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Abstract-Acute and chronic exposure to nonphysiological doses of ultraviolet radiation leads to variety of changes of skin ranging from sun-burn, erythema to skin cancer. For skin protection from deleterious effects of sunlight, sunscreen products are used in various forms having chemical and physical filters. However, synthetic sunscreen formulations are reported to cause adverse effects. Thus the present study was planned to evaluate the sun protection factor (SPF) of leaves extract of Murraya koenigii for their application as herbal sunscreens. The results suggested that the occurrence of a

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17

Masnavi, Majid, and Martin Richardson. "Spectroscopic Studies of Laser-Based Far-Ultraviolet Plasma Light Source." Applied Sciences 11, no. 15 (2021): 6919. http://dx.doi.org/10.3390/app11156919.

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A series of experiments is described which were conducted to measure the absolute spectral irradiances of laser plasmas created from metal targets over the wavelength region of 123–164 nm by two separate 1.0 μm lasers, i.e., using 100 Hz, 10 ns, 2–20 kHz, 60–100 ns full-width-at-half-maximum pulses. A maximum radiation conversion efficiency of ≈3%/2πsr is measured over a wavelength region from ≈125 to 160 nm. A developed collisional-radiative solver and radiation-hydrodynamics simulations in comparison to the spectra detected by the Seya–Namioka-type monochromator reveal the strong broadband e

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18

Shelke, Ankita P. "Depletion Of Natural Sunscreen: Causes And It's Effects." International Journal of Advance and Applied Research 4, no. 35 (2023): 151–53. https://doi.org/10.5281/zenodo.10350103.

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<strong>Abstract:</strong>            There are many human activities which Hazardous the environment, Ozone layer depletion is one of the major activity among them. The study implies that the excessive use of Halons, Chlorofluorocarbon (CFC), and other destructive gases causes fastest depletion of ozone layer which is present in the stratosphere which results in emission of Ultraviolet radiation on the surface of earth and harms Human, crops and ecosystem. The study highlights the causes of ozone layer depletion on ecosystem especially on Human bei

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19

Сидоров, А. И., А. И. Игнатьев, В. Д. Дубровин та Н. В. Никоноров. "Влияние рентгеновского и УФ лазерного облучения на оптические свойства щелочносодержащих силикатных стекол". Журнал технической физики 127, № 9 (2019): 454. http://dx.doi.org/10.21883/os.2019.09.48202.92-19.

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The results of complex X-ray and ultraviolet (UV) nanosecond laser radiations action on alkali-containing silicate glasses is presented.It is shown that under the action of X-ray radiation color centers with luminescent properties appear in glasses. This is caused by the increase of concentration of glass network structural defects. Under the action of laser radiation the destruction of these defects takes place, accompanied by the bleaching of glass and by the disappearance of luminescence. The dynamic of glass bleaching under the laser action and the influence of alkali metals ions (Li, Na,

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Ayala, Fabrizio, Marco Palla, Rossella Di Trolio, Nicola Mozzillo, and Paolo A. Ascierto. "The Role of Optical Radiations in Skin Cancer." ISRN Dermatology 2013 (April 24, 2013): 1–8. http://dx.doi.org/10.1155/2013/842359.

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Purpose. Electromagnetic radiation with wavelength in the range 100 nm to 1 mm is known as optical radiation and includes ultraviolet radiation, the visible spectrum, and infrared radiation. The deleterious short- and long-term biological effects of ultraviolet radiation, including melanoma and other skin cancers, are well recognized. Infrared radiation may also have damaging biological effects. Methods. The objective of this review was to assess the literature over the last 15 years and to summarize correlations between exposure to optical radiation and the risk of melanoma and other cancers.

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Aubailly, M., R. Santus, and S. Salmon. "FERROUS ION RELEASE FROM FERRITIN BY ULTRAVIOLET-A RADIATIONS." Photochemistry and Photobiology 54, no. 5 (1991): 769–73. http://dx.doi.org/10.1111/j.1751-1097.1991.tb02088.x.

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22

Saleem, Mudassir, R. Alammari, Atif Iqbal, and Amith Khandakar. "Investigation into ultraviolet radiations from modern electric light sources." International Journal of Ambient Energy 38, no. 8 (2016): 814–18. http://dx.doi.org/10.1080/01430750.2016.1222951.

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23

Abdykadyrov, Askar, Sunggat Marxuly, Ainur Kuttybayeva, et al. "PROCESS OF DETERMINATION OF SURFACE WATER BY ULTRAVIOLET RADIATIONS." Water Conservation & Management 7, no. 2 (2023): 158–67. http://dx.doi.org/10.26480/wcm.02.2023.158.167.

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This scientific research work deals with water disinfection in surface water reservoirs. According to the research, work was carried out to eliminate harmful microorganisms, viruses and microbacteria in the water. According to scientific research work, the electronic circuit of the device for capturing UV rays with a wavelength of 220-240 nm was studied. In the same way, the energy and spectral characteristics of the device, the parameters related to current and power are provided. The design and economic efficiency of the UV radiation device was considered and studied experimentally. In the w

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Temileyi, Lawal, Serifat, Oladapo, Olukunle Olaonipekun, and Oni, Emmanuel Abiodun. "Assessment of Effective Irradiance from UV Radiation in Some Welding Workshops within Ogbomoso, Nigeria." International Journal of Health Sciences and Research 14, no. 8 (2024): 215–25. http://dx.doi.org/10.52403/ijhsr.20240827.

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Background: Arc welding process emits different types of radiations such as ultraviolet, visible light and infrared radiation. It has been discovered that ultraviolet radiation (UVR) cause acute eye injuries such as photokeratitis with accompanying symptoms such as ocular pain, tearing, and a sensation of sand in the eye. This research aimed to assess impact of ultraviolet radiation on ocular tissues due to varied welding activities. Methods: The irradiance from the UVR emitted from imported welding machine (MMA-250), and a locally constructed welding machine were measured using ultraviolet ra

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Kannaujiya, Vinod K., Akhlaqur Rahman, Adinath, et al. "Cumulative Effects of Ultraviolet Radiation and Photosyntheically Active Radiation on Phycobiliproteins of A Hot-Spring Cyanobacatrium Nostoc sp. strain HKAR-2." International Journal of Applied Sciences and Biotechnology 4, no. 3 (2016): 247–53. http://dx.doi.org/10.3126/ijasbt.v4i3.15595.

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Cyanobacteria are cosmopolitan in distribution and have adapted to diverse habitats. Adaptation of cyanobacteria is one of the key factors to withstand harsh environmental conditions. We have investigated the effects of photosynthetically active radiation (PAR; 400–700 nm), ultraviolet-B (UV-B; 280–315 nm) radiation and PAR+UV-B radiations on phycobiliproteins (PBPs) of a hot-spring cyanobacterium Nostoc sp. HKAR-2. There was a continuous induction of both phycoerythrin (PE) and phycocyanin (PC) after exposure of PAR up to 300 min. However, there was an induction in the synthesis of both PE an

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Chiang, Ren-Tai. "Analysis of Radiation Interactions and Biological Effects for Boron Neutron Capture Therapy." ASEAN Journal on Science and Technology for Development 35, no. 3 (2018): 203–7. http://dx.doi.org/10.29037/ajstd.535.

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The direct and indirect ionizing radiation sources for boron neutron capture therapy (BNCT)are identi?ed. The mechanisms of physical, chemical and biological radiation interactions for BNCT are systematically described and analyzed. The relationship between the effect of biological radiation and radiation dose are illustrated and analyzed for BNCT. If the DNAs in chromosomes are damaged by ion- izing radiations, the instructions that control the cell function and reproduction are also damaged. This radiation damage may be reparable, irreparable, or incorrectly repaired. The irreparable damage

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RIVERA, T., G. KITIS, J. AZORÍN, and C. FURETTA. "DECONVOLUTION METHOD ON OSL CURVES FROM ZrO2 IRRADIATED BY BETA AND UV RADIATIONS." Modern Physics Letters B 23, no. 05 (2009): 699–707. http://dx.doi.org/10.1142/s0217984909018904.

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This paper reports the optically stimulated luminescent (OSL) response of ZrO 2 to beta and ultraviolet radiations in order to investigate the potential use of this material as a radiation dosimeter. The experimentally obtained OSL decay curves were analyzed using the computerized curve de-convolution (CCD) method. It was found that the OSL curve structure, for the short (practical) illumination time used, consists of three first order components. The individual OSL dose response behavior of each component was found. The values of the time at the OSL peak maximum and the decay constant of each

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Ubowska, Agnieszka, and Piotr Zmuda Trzebiatowski. "Impact of Selected Operating Conditions on the Optical Properties of Polymer Shields." Rocznik Ochrona Środowiska 24 (2022): 404–14. http://dx.doi.org/10.54740/ros.2022.029.

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The optical properties of polymer barriers used as machine covers and eye protection are extremely important for vision quality and user safety. The article presents the influence of liquid chemical substances at room temperature on the transparency of poly(methyl methacrylate) shields. UV/VIS spectroscopy was used to assess the impact of liquid chemical substances on the polymer’s permeability to visible, ultraviolet and infrared radiations. The tests showed that the contact of the poly(methyl methacrylate) sheath with liquid chemicals influences the transmittance of the PMMA surface to a lim

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Vijay Kardile, Puja, Miss Prof KomalBaride Miss. Prof. KomalBaride, and DR Sanjay Ingle DR. Sanjay Ingle. "A Review paper of the spectroscopy." International Journal of Pharmaceutical Research and Applications 09, no. 05 (2024): 690–99. https://doi.org/10.35629/4494-0905690699.

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One scientific method for examining how matter and electromagnetic waves interact is spectroscopy. By examining how different substances absorb, emit, or scatter light, one can gain insight into their composition, structure, and qualities. The study of how matter absorbs and emits light and other radiations is known as spectroscopy. Similar to how a prism splits light into a rainbow, it entails dividing light, or electromagnetic radiation, into its component wavelengths, or spectrum. One significant and cutting-edge analytical tool employed in the pharmaceutical business over the past 35 years

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Rastogi, Rajesh P., Richa, Ashok Kumar, Madhu B. Tyagi, and Rajeshwar P. Sinha. "Molecular Mechanisms of Ultraviolet Radiation-Induced DNA Damage and Repair." Journal of Nucleic Acids 2010 (2010): 1–32. http://dx.doi.org/10.4061/2010/592980.

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DNA is one of the prime molecules, and its stability is of utmost importance for proper functioning and existence of all living systems. Genotoxic chemicals and radiations exert adverse effects on genome stability. Ultraviolet radiation (UVR) (mainly UV-B: 280–315 nm) is one of the powerful agents that can alter the normal state of life by inducing a variety of mutagenic and cytotoxic DNA lesions such as cyclobutane-pyrimidine dimers (CPDs), 6-4 photoproducts (6-4PPs), and their Dewar valence isomers as well as DNA strand breaks by interfering the genome integrity. To counteract these lesions,

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Gill, Sarvajeet S., Naser A. Anjum, Ritu Gill, Manoranjan Jha, and Narendra Tuteja. "DNA Damage and Repair in Plants under Ultraviolet and Ionizing Radiations." Scientific World Journal 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/250158.

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Being sessile, plants are continuously exposed to DNA-damaging agents present in the environment such as ultraviolet (UV) and ionizing radiations (IR). Sunlight acts as an energy source for photosynthetic plants; hence, avoidance of UV radiations (namely, UV-A, 315–400 nm; UV-B, 280–315 nm; and UV-C, <280 nm) is unpreventable. DNA in particular strongly absorbs UV-B; therefore, it is the most important target for UV-B induced damage. On the other hand, IR causes water radiolysis, which generates highly reactive hydroxyl radicals (OH•) and causes radiogenic damage to important cellular compo

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Albi, Elisabetta, Samuela Cataldi, Maristella Villani, and Giuseppina Perrella. "Nuclear Phosphatidylcholine and Sphingomyelin Metabolism of Thyroid Cells Changes during Stratospheric Balloon Flight." Journal of Biomedicine and Biotechnology 2009 (2009): 1–5. http://dx.doi.org/10.1155/2009/125412.

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Nuclear sphingomyelin and phosphatidylcholine metabolism is involved in the response to ultraviolet radiation treatment in different ways related to the physiological state of cells. To evaluate the effects of low levels of radiation from the stratosphere on thyroid cells, proliferating and quiescent FRTL-5 cells were flown in a stratospheric balloon (BIRBA mission). After recovery, the activity of neutral sphingomyelinase, phosphatidylcholine-specific phospholipase C, sphingomyelin synthase, and reverse sphingomyelin synthase was assayed in purified nuclei and the nuclei-free fraction. In pro

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Godoy, Mauren Knorst, Viviane Cecília Kessler Nunes, and Gabriela Bonfanti-Azzolin. "Natural products as new photoprotection strategies." Revista de Ciências Médicas e Biológicas 23, no. 2 (2024): 338–45. https://doi.org/10.9771/cmbio.v23i2.54651.

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Purpose: One of the great harms to human health comes from excessive exposure and lack of protection to ultraviolet (UV) radiation. The deleterious effects are numerous and require effective protection systems. Recent strategies have been explored with different types of medicinal plants and natural compounds, obtaining significant results for photoptation. The aim of this study was to investigate the photoprotective effects of natural products in in vivo models. Methods: This is an integrative literature review. Results: The compiled data showed that the radiations most used in the studies we

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Nevolin, Vladimir K. "Background gamma radiation and plant photosynthesis." IOP Conference Series: Earth and Environmental Science 839, no. 4 (2021): 042002. http://dx.doi.org/10.1088/1755-1315/839/4/042002.

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Abstract The idea of experiments is inspired by experimental data on the transmutation of isotopes in biological systems. Model particles, in our opinion, responsible for nuclear reactions can be hydrogen atoms in unusual states. Previously, we have experimentally shown that the formation of such hydrogen atoms is observed under hard ultraviolet radiation (they can be formed during photosynthesis in plants). In turn, these atoms, entering into nuclear reactions, can lead to gamma radiation. In this regard, it is possible to emit both ultraviolet and gamma radiation from plants. Two radiascan 7

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Singh, D., G. S. Mudahar, K. S. Thind, and Hardev Singh Virk. "Structural Investigations of Gamma-Irradiated PbO Glasses." Solid State Phenomena 239 (August 2015): 98–109. http://dx.doi.org/10.4028/www.scientific.net/ssp.239.98.

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The effects of gamma radiations on the optical, physical and structural properties of zinc lead borate xZnO-2xPbO-(1-3x)B2O3 and zinc lead borosilicate xZnO-2xPbO-1/2(1-3x)B2O3-1/2(1-3x)SiO2 glasses have been investigated. Differential Scanning Calorimetry (DSC), Ultraviolet-Visible (UV-Vis) and Fourier Transmission Infra-red (FTIR) spectroscopic techniques have been used to compare the properties of samples before and after gamma irradiation by a dose of 2.5 kGy. The variation of density, optical band gap (Eg), IR absorption bands and glass transition temperature (Tg) indicates that the struc

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Zagan, Sabina, Bogdan Negreanu-Pirjol, Ticuta Negreanu-Pirjol, Elena Gorun, and Remus Zagan. "EFFECT OF ULTRAVIOLET RADIATIONS ON THE MICROBIOLOGICAL QUALITY OF DRINKABLE GROUNDWATER." Environmental Engineering and Management Journal 10, no. 11 (2011): 1687–92. http://dx.doi.org/10.30638/eemj.2011.230.

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Soliman, C. "Thermoluminescence behavior of magnesium oxide exposed to gamma and ultraviolet radiations." Radiation Effects and Defects in Solids 164, no. 4 (2009): 257–65. http://dx.doi.org/10.1080/10420150802349518.

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Aly, A. H., S. Barakat, and A. F. Amin. "Tunable filter based on the 1D photonic crystal within ultraviolet radiations." IOP Conference Series: Materials Science and Engineering 956 (October 28, 2020): 012010. http://dx.doi.org/10.1088/1757-899x/956/1/012010.

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Lewandowski, Simon, Virginie Rejsek-Riba, Alain Bernès, Sophie Perraud, and Colette Lacabanne. "Multilayer films ageing under ultraviolet radiations: Complementary study by dielectric spectroscopy." Journal of Applied Polymer Science 129, no. 6 (2013): 3772–81. http://dx.doi.org/10.1002/app.38747.

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Jin, Shuang, Yubin Ren, Yupeng Cheng, et al. "Variations in Oxidative Stability of Walnut Oil with Rosmarinic Acid Added under Different Ultraviolet Radiations." Journal of Food Processing and Preservation 2023 (November 30, 2023): 1–11. http://dx.doi.org/10.1155/2023/3624954.

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Rosmarinic acid (RA) is a natural phenolic compound extracted from the Labiatae family and is a natural antioxidant. In this study, walnut oil added with RA was treated with different ultraviolet radiations, and stabilization effects in terms of the same conditions (0.2 mg/g) were compared with synthetic antioxidant (BHT). In order to compare the effectiveness of three UV treatments, different lab tests were conducted, namely, the acid value, peroxide value, iodine value, anisidine value, DPPH free radical scavenging rate, and malondialdehyde content. The enhanced UV-A, UV-B, and UV-C radiatio

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Mishra, Anu, Himansu Shekhar Mohapatra, and B. S. Butola. "Imparting Protection against UV Radiations Using In Situ Coating of Titanium Dioxide on Textiles." International Letters of Chemistry, Physics and Astronomy 82 (March 2019): 14–20. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.82.14.

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Protection against ultraviolet radiation is one of the areas, in which considerable attention is being paid. Application of a wash durable finish on cotton fabric to protect the wearer from these radiations remains a challenge. The harmful effects of UV radiations result in the form of eye disorders, accelerated ageing of skin, DNA damage and cause of cancer. The current study focuses upon the use of TiO2 on cotton fabric to impart UV protection. TiO2 is deposited on cotton fabric using its pre-cursor. Sol-gel method has been used to convert pre-cursor into titanium oxide directly on fabric su

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Mishra, Anu, Himansu Shekhar Mohapatra, and B. S. Butola. "Imparting Protection against UV Radiations Using <i>In Situ</i> Coating of Titanium Dioxide on Textiles." International Letters of Chemistry, Physics and Astronomy 82 (March 12, 2019): 14–20. http://dx.doi.org/10.56431/p-26i977.

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Protection against ultraviolet radiation is one of the areas, in which considerable attention is being paid. Application of a wash durable finish on cotton fabric to protect the wearer from these radiations remains a challenge. The harmful effects of UV radiations result in the form of eye disorders, accelerated ageing of skin, DNA damage and cause of cancer. The current study focuses upon the use of TiO2 on cotton fabric to impart UV protection. TiO2 is deposited on cotton fabric using its pre-cursor. Sol-gel method has been used to convert pre-cursor into titanium oxide directly on fabric su

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Khan, Mahjabeen, Murray McDonald, Kaustubh Mundada, and Mark Willcox. "Efficacy of Ultraviolet Radiations against Coronavirus, Bacteria, Fungi, Fungal Spores and Biofilm." Hygiene 2, no. 3 (2022): 120–31. http://dx.doi.org/10.3390/hygiene2030010.

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Ultra-violet (UV) C (200–280 wavelength) light has long been known for its antimicrobial and disinfecting efficacy. It damages DNA by causing the dimerization of pyrimidines. A newly designed technology (MUVi-UVC; Mobile UV Innovations Pty Ltd., Melbourne, VIC, Australia) that emits UVC at 240 nm is composed of an enclosed booth with three UVC light stands each with four bulbs, and has been developed for disinfecting mobile medical equipment. The aim of this project was to examine the spectrum of antimicrobial activity of this device. The experiments were designed following ASTM E1052-20, EN14

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Yeritsyan, H. N., A. A. Sahakyan, S. K. Nikoghosyan, et al. "Effect of Electron and Ultraviolet Radiations and Temperature on n-Si Conductivity." Journal of Spacecraft and Rockets 48, no. 1 (2011): 34–37. http://dx.doi.org/10.2514/1.49303.

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Favre, Alain, Eliane Hajnsdorf, Khoudia Thiam, and Adriano Caldeira de Araujo. "Mutagenesis and growth delay induced in Escherichia coli by near-ultraviolet radiations." Biochimie 67, no. 3-4 (1985): 335–42. http://dx.doi.org/10.1016/s0300-9084(85)80076-6.

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Hedir, Abdallah, and Mustapha Moudoud. "Effect of Ultraviolet Radiations on Medium and High Voltage Cables Insulation Properties." International Journal of Engineering and Technology 8, no. 5 (2016): 2308–17. http://dx.doi.org/10.21817/ijet/2016/v8i5/160805406.

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ZHANG, WENTAO, SIGUO XIAO, XIAOLIANG YANG, and XIANGLIANG JIN. "BROADBAND QUANTUM CUTTING IN ZnO/Yb(Er)F3 OXY-FLUORIDE NANOCOMPOSITE PREPARED BY THERMAL OXIDATION METHOD." Functional Materials Letters 06, no. 01 (2013): 1350002. http://dx.doi.org/10.1142/s1793604713500021.

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Yb(Er)F3 nanoparticles absorbed with ZnO sheet were prepared via two-step co-precipitation method followed with thermal oxidation. In the ZnO / Yb(Er)F3 composite phosphor, ZnO can efficiently absorb ultraviolet photons of 250–380 nm and transfer its absorbed photon energy to Er 3+ ions in fluoride particles. A followed quantum cutting between Er 3+- Yb 3+ couples in the fluoride takes place, down-converting an absorbed ultraviolet photon into two photons of 650 nm and 980 nm radiations. The composite phosphor combines the wide wavelength absorption range and high absorption cross-section of Z

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Kumar, Sunil, D. S. Malik, and Prachi Rathi. "Effect of UV-B radiations on mortality and enzymes level in fish larvae of Tor tor and Schizothorax richardsonii on laboratory scale." Journal of Applied and Natural Science 11, no. 2 (2019): 462–67. http://dx.doi.org/10.31018/jans.v11i2.2080.

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Depletion of stratospheric ozone layer is resulting into increase in solar UV-B on earth surface. Ultra violet radiation is well known to cause many detrimental effects in aquatic organisms. The present study was performed to study the effect of solar ultraviolet radiation on fish fingerlings of Tor tor and Schizothorax richardsonii as a model system on laboratory scale. The effect of different intensities of natural solar and artificial UV-B radiation on fish larvae of T. tor and S. richardsonii in a presence of retene was investigated. Solar ultraviolet intensity showed seasonal and altitudi

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Maugeri, Grazia, Agata Grazia D’Amico, Benedetta Magrì, et al. "Regulation of UV-B-Induced Inflammatory Mediators by Activity-Dependent Neuroprotective Protein (ADNP)-Derived Peptide (NAP) in Corneal Epithelium." International Journal of Molecular Sciences 24, no. 8 (2023): 6895. http://dx.doi.org/10.3390/ijms24086895.

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The corneal epithelium, representing the outermost layer of the cornea, acts as a barrier to protect the eye against external insults such as ultraviolet B (UV-B) radiations. The inflammatory response induced by these adverse events can alter the corneal structure, leading to visual impairment. In a previous study, we demonstrated the positive effects of NAP, the active fragment of activity-dependent protein (ADNP), against oxidative stress induced by UV-B radiations. Here, we investigated its role to counteract the inflammatory event triggered by this insult contributing to the disruption of

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Gemini, L., D. Margarone, S. Trusso, et al. "Generation of periodic structures on SiC upon laser plasma XUV/NIR radiations." Laser and Particle Beams 31, no. 3 (2013): 547–50. http://dx.doi.org/10.1017/s026303461300058x.

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AbstractSurface periodic structures are generated upon irradiation of a silicon carbide (SiC) thin film by the plasma produced by 40 fs pulses from a Ti:Sapphire laser focused onto a thick low density polyethylene (LDPE) foil facing the SiC film. Independently of the number of laser pulses applied, these structures, with average regular periodicity of 710 nm, are evident throughout all irradiated areas. We attribute their formation to the efficient coupling of the unfocused femtosecond laser pulse with the incoherent extreme ultraviolet component of the laser-generated LDPE plasma.

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