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Artículos de revistas sobre el tema "Effects of X-rays on"

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Publicado: 26 de julio de 2024

Última modificación: 31 de julio de 2025

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1

YOSHIHARA, K., and J. IIHARA. "CHEMICAL EFFECTS OF X-RAYS." International Journal of PIXE 02, no. 02 (1992): 93–106. http://dx.doi.org/10.1142/s0129083592000105.

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Various aspects of chemical effects on X-ray spectra such as energy shift, emission probability change, satellite formation and peak profile change are reviewed in recent studies. Applicability of the chemical effect to analysis of practical samples is also discussed. Though the emphasis is laid on PIXE, other X-ray production techniques are also taken into consideration because new trends of X-ray production and measurement are growing.

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2

Zhao, Wenhui, Lu Cong, and Yolanda Guerrero-Sánchez. "Radiation effects of nuclear physics rays on hepatoma cells." Open Physics 17, no. 1 (2019): 167–76. http://dx.doi.org/10.1515/phys-2019-0017.

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Abstract The traditional method of cloning formation is used to study the radiation effect of nuclear physics rays on hepatoma cells, and the results obtained are not reliable. Therefore, a new method of studying the radiation effect of nuclear physics rays on hepatoma cells is proposed. PCC method is used to study the radiation effect of γ-rays on hepatoma cells. Radiation effects of X-rays on hepatoma cells were studied by radionuclide formation assay, neutral comet electrophoresis and γH2AX focal detection. The results showed that the survival curves of HepG2 hepatoma cells irradiated by γ-

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3

Bell, Brett I., Justin Vercellino, N. Patrik Brodin та ін. "Orthovoltage X-Rays Exhibit Increased Efficacy Compared with γ-Rays in Preclinical Irradiation". Cancer Research 82, № 15 (2022): 2678–91. http://dx.doi.org/10.1158/0008-5472.can-22-0656.

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Abstract Radionuclide irradiators (137Cs and 60Co) are commonly used in preclinical studies ranging from cancer therapy to stem cell biology. Amidst concerns of radiological terrorism, there are institutional initiatives to replace radionuclide sources with lower energy X-ray sources. As researchers transition, questions remain regarding whether the biological effects of γ-rays may be recapitulated with orthovoltage X-rays because different energies may induce divergent biological effects. We therefore sought to compare the effects of orthovoltage X-rays with 1-mm Cu or Thoraeus filtration and

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4

Zhang, Jian, Ziyang Wang, Anqing Wu, et al. "Differences in responses to X-ray exposure between osteoclast and osteoblast cells." Journal of Radiation Research 58, no. 6 (2017): 791–802. http://dx.doi.org/10.1093/jrr/rrx026.

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Abstract Radiation-induced bone loss is a potential health concern for cancer patients undergoing radiotherapy. Enhanced bone resorption by osteoclasts and decreased bone formation by osteoblasts were thought to be the main reasons. In this study, we showed that both pre-differentiating and differentiating osteoclasts were relatively sensitive to X-rays compared with osteoblasts. X-rays decreased cell viability to a greater degree in RAW264.7 cells and in differentiating cells than than in osteoblastic MC3T3-E1 cells. X-rays at up to 8 Gy had little effects on osteoblast mineralization. In con

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5

Jalal, Deena, Hadi Al- Attab, and Hayder ali hussein al mansarawi. "The Effect of the Exposure into a low dose of X-ray on human Hematological Parameters." University of Thi-Qar Journal of Science 11, no. 2 (2024): 59–62. https://doi.org/10.32792/utq/utjsci/v11i2.1115.

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Although low dose of X-rays are widely used in medical radiology, the harmful effects of exposure to low dose of X-rays during diagnostic radiological examination is still a commonly discussed topic. Objective of the current study was to investigate the effects of exposing low dose of X-rays on human parameters, like the white blood cell (WBC), red blood (RBC), hemoglobin (HGB), and platelet counts (PLT) . znn We exposed a human blood into 60kv and 100mA for 80ms of medical diagnostic X-rays. Non-irradiated cells represented as the control group. The results showed there are no changes in the

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6

Supawat, Benjamaporn, Jongchai Tinlapat, Rusleena Wongmahamad, Chuleekorn Silpmuang, Suchart Kothan, and Montree Tungjai. "Effects of Medical Diagnostic X-rays Delivered at 0.01 or 0.05 mGy on Human Blood Cells." Bangladesh Journal of Medical Science 20, no. 1 (2021): 136–44. http://dx.doi.org/10.3329/bjms.v20i1.50358.

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Background: Low-dose X-rays are commonly used in medical imaging to help in the diagnosis ofdiseases. However, the deleterious effects of exposure to medical diagnostic low-dose X-rays remaina highly debated topic. The objective was to study the effects of medical diagnostic X-rays on humanblood cells. Materials and Methods: We studied the effects of medical diagnostic low-dose X-rays (80kVp), i.e.,0.01 or 0.05 mGy, after the in vitro exposure of human red blood cells (RBCs) and peripheralblood mononucleated cells (PBMCs).Cells with no irradiation served as the control group. The biologi

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7

Wang, Zhuo, Ming-Yue Lv, and Yao-Xiong Huang. "Effects of Low-Dose X-Ray on Cell Growth, Membrane Permeability, DNA Damage and Gene Transfer Efficiency." Dose-Response 18, no. 4 (2020): 155932582096261. http://dx.doi.org/10.1177/1559325820962615.

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Background: We aimed to reveal if low dose X-rays would induce harmful or beneficial effect or dual response on biological cells and whether there are conditions the radiation can enhance gene transfer efficiency and promote cell growth but without damage to the cells. Method: A systematic study was performed on the effects of Kilo-V and Mega-V X-rays on the cell morphology, viability, membrane permeability, DNA damage, and gene transfection of 293 T and CHO cells. Results: The Kilo-V X-rays of very low doses from 0.01 to 0.04 Gray in principle didn’t induce any significant change in cell morp

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8

Amir, Haider F. Abdul, and Fuei Pien Chee. "Evaluation of Static Performance of Optoelectronic Semiconductor Devices under X-Rays Irradiation." Advanced Materials Research 173 (December 2010): 1–6. http://dx.doi.org/10.4028/www.scientific.net/amr.173.1.

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In this research, optoelectronic devices consisted of an infrared light emitting diode and a phototransistor with no special handling or third party-packaging were irradiated to ionizing radiation utilizing x-rays. It was found that the devices under test (DUTs) undergo performance degradation in their functional parameters during exposure to x-rays. These damaging effects are depending on their current drives and also the Total Ionizing Dose (TID) absorbed. The TID effects by x-rays are cumulative and gradually take place throughout the lifecycle of the devices exposed to radiation.

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9

Wittry, D. B. "Focusing x rays for microprobe x-ray fluorescence analysis." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1730–31. http://dx.doi.org/10.1017/s042482010013328x.

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X-ray microprobes that use focused monochromatic x rays for fluorescence excitation have four significant advantages over electron microprobes that use focused electrons for direct excitation, namely: 1) less background radiation is produced, 2) there is little or no charging of insulating specimens, 3) less damage is caused to the specimen, and 4) the specimen often does not need a high vacuum environment. These advantages result from the difference in interaction of photon and electron beams with matter. In the first place, because the x-ray photon is uncharged, bremsstrahlung which is alway

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10

Pellegrini, Silvia. "X-rays and dynamics." Proceedings of the International Astronomical Union 5, H15 (2009): 91. http://dx.doi.org/10.1017/s1743921310008434.

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AbstractThe hot X-ray emitting interstellar medium of early type galaxies can be used in principle as a total mass tracer and a tool to determine the stellar orbital anisotropy, based on the hypothesis of hydrostatic equilibrium for it. Here the effects that deviations from equilibrium have on both estimates are shown, and a comparison is made with cases for which accurate optical and X-ray information are available.

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11

Breslow, Lester, John W. Gofman, and Egan O'Connor. "X-Rays: Health Effects of Common Exams." Journal of Public Health Policy 8, no. 1 (1987): 113. http://dx.doi.org/10.2307/3342491.

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12

Wagner, Louis K., and Harry W. Fischer. "X-rays: Health Effects of Common Exams." Radiology 163, no. 2 (1987): 436. http://dx.doi.org/10.1148/radiology.163.2.436.

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13

lihara, J., T. Omori, K. Yoshihara, and K. Ishii. "Chemical effects in chromium L X-rays." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 75, no. 1-4 (1993): 32–34. http://dx.doi.org/10.1016/0168-583x(93)95606-6.

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14

Adler, Yolanda T. "X-rays: Health Effects of Common Exams." JAMA: The Journal of the American Medical Association 256, no. 21 (1986): 3029. http://dx.doi.org/10.1001/jama.1986.03380210125042.

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15

Ciaravella, Angela, Flavio Scappini, Marco Franchi, et al. "Role of clays in protecting adsorbed DNA against X-ray radiation." International Journal of Astrobiology 3, no. 1 (2004): 31–35. http://dx.doi.org/10.1017/s1473550404001880.

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We studied the effects of soft X-rays radiation on free and clay (montmorillonite, kaolinite) adsorbed DNA. The DNA samples were exposed to X-rays of 1.49, 4.51 and 8.04 keV for exposure times ranging from 2 min up to 16 h. The biological transformation technique was used to estimate the damage of the DNA molecules. Free and clay adsorbed DNA are differently affected by X-rays. The former is damaged by X-rays and the level of damage depends on the energy dose rather than the hardness of the radiation. The clay adsorbed DNA is not damaged by X-rays for energy doses up to 5.8×104 erg. Clays mate

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16

Tomita, Masanori, Masaya Torigata, Tadayuki Ohchi, and Atsushi Ito. "Observation of Histone H2AX Phosphorylation by Radiation-Induced Bystander Response Using Titanium Characteristic X-ray Microbeam." Biology 12, no. 5 (2023): 734. http://dx.doi.org/10.3390/biology12050734.

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Radiation-induced bystander response (RIBR) is a response induced in non-irradiated cells that receive bystander signals from directly irradiated cells. X-ray microbeams are useful tools for elucidating the mechanisms underlying RIBR. However, previous X-ray microbeams used low-energy soft X-rays with higher biological effects, such as aluminum characteristic X-rays, and the difference from conventional X-rays and γ-rays has often been discussed. The microbeam X-ray cell irradiation system at the Central Research Institute of Electric Power Industry has been upgraded to generate higher energy

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17

Khan, Muhammad Shoaib, Chunliang Liu, Fanbi Meng, et al. "X-rays Stimulate Granular Secretions and Activate Protein Kinase C Signaling in Human Platelets." Current Issues in Molecular Biology 45, no. 7 (2023): 6024–39. http://dx.doi.org/10.3390/cimb45070380.

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X-rays can induce morphological as well as functional changes in cells. Platelets are anuclear cellular fragments originating from megakaryocytes and are the major regulators in hemostasis and thrombosis. Platelet products are irradiated to avoid medical complications associated with platelet transfusion. So far, gamma, UV, and laser radiation have been used for this purpose. However, scientists are divided about the effects of radiation on platelet quality. The present study was designed to explore the possible effects of X-rays in washed human platelets and understand the molecular mechanism

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18

Popescu, Roxana Cristina, Diana Iulia Savu, Miriam Bierbaum, et al. "Intracellular Delivery of Doxorubicin by Iron Oxide-Based Nano-Constructs Increases Clonogenic Inactivation of Ionizing Radiation in HeLa Cells." International Journal of Molecular Sciences 22, no. 13 (2021): 6778. http://dx.doi.org/10.3390/ijms22136778.

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In this study, we determined the potential of polyethylene glycol-encapsulated iron oxide nanoparticles (IONPCO) for the intracellular delivery of the chemotherapeutic doxorubicin (IONPDOX) to enhance the cytotoxic effects of ionizing radiation. The biological effects of IONP and X-ray irradiation (50 kV and 6 MV) were determined in HeLa cells using the colony formation assay (CFA) and detection of γH2AX foci. Data are presented as mean ± SEM. IONP were efficiently internalized by HeLa cells. IONPCO radiomodulating effect was dependent on nanoparticle concentration and photon energy. IONPCO di

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19

Merrill, Javier, Victor Montenegro, Michael F. Gazley, and Leandro Voisin. "The effects of pressure on X-ray fluorescence analyses: pXRF under high altitude conditions." Journal of Analytical Atomic Spectrometry 33, no. 5 (2018): 792–98. http://dx.doi.org/10.1039/c8ja00029h.

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As altitude increases, air density decreases, and the physics of X-rays being transmitted through air mean that the transmission of low-energy X-rays increases and accordingly the transmission effectiveness of low-atomic weight elements (e.g. Mg, Al, and Si) also increases. Here we assess the performance of pXRF units across a range of pressures.

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20

Abdullah Marzoog Abdullah Aldosari. "Radiation Exposure in Medical X-Rays: Risks and Safety Measures." Power System Technology 48, no. 4 (2024): 7442–66. https://doi.org/10.52783/pst.1613.

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Medical x-rays are essential diagnostic tools used in modern healthcare, providing valuable insights into the internal structures of the human body. However, exposure to ionizing radiation from x-rays carries inherent risks that must be carefully managed to ensure patient safety.This paper explores the risks associated with radiation exposure in medical x-rays, including the potential for biological damage and the long-term health effects. It also discusses the safety measures and best practices that can be implemented to minimize radiation exposure and protect both patients and healthcare pro

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21

Oakley, Paul A., and Deed E. Harrison. "X-Ray Hesitancy: Patients’ Radiophobic Concerns Over Medical X-rays." Dose-Response 18, no. 3 (2020): 155932582095954. http://dx.doi.org/10.1177/1559325820959542.

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All too often the family physician, orthopedic surgeon, dentist or chiropractor is met with radiophobic concerns about X-ray imaging in the clinical setting. These concerns, however, are unwarranted fears based on common but ill-informed and perpetuated ideology versus current understanding of the effects of low-dose radiation exposures. Themes of X-ray hesitancy come in 3 forms: 1. All radiation exposures are harmful (i.e. carcinogenic); 2. Radiation exposures are cumulative; 3. Children are more susceptible to radiation. Herein we address these concerns and find that low-dose radiation activ

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22

Garratt-Reed, A. J. "X-ray absorption correction using the bremsstrahlung shape." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 702–3. http://dx.doi.org/10.1017/s0424820100144887.

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The Bremsstrahlung background, present in every electron-induced x-ray spectrum, is affected by absorption in the sample in the path to the x-ray detector in exactly the same way as the characteristic x-rays. In principle, therefore, the Bremmstrahlung x-rays could provide a means of correcting a spectrum for self-absorption effects. Craven and Adam have examined this possibility, and have concluded that it may indeed have value.

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23

Rafiq, Muhammad, Mehreen Khan, Syed Habib Ahmed Naqvi, Naseem Khatoon, and Muhammad Umar Dahot. "Mutagenic Effects on the Growth, Reproductive and Yield Parameters of Praecitrullus fistulosus." Biological Sciences - PJSIR 60, no. 3 (2017): 132–40. http://dx.doi.org/10.52763/pjsir.biol.sci.60.3.2017.132.140.

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The aim of this study was to modify the growth, reproductive and yield parameters of Praecitrullusfistulosus by mutagenesis. The seeds of the plant were treated with chemical mutagens including ethidiumbromide and colchicine in concentration of (0.05 and 0.10%) and (0.01 and 0.02%), respectively. Seedswere also treated with UV rays at periods of 1 and 2 h and X-rays for 75 KeV at periods of 5 and 10 sec.The growth features were observed at an interval of one week till the 11th week of their growth period.The data showed that seed germination value and lethality (%) of plants were 80 and 75%, r

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24

Yogo, Katsunori, Masaki Misawa, Hidetoshi Shimizu, et al. "Radiosensitization Effect of Gold Nanoparticles on Plasmid DNA Damage Induced by Therapeutic MV X-rays." Nanomaterials 12, no. 5 (2022): 771. http://dx.doi.org/10.3390/nano12050771.

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Gold nanoparticles (AuNPs) can be used with megavolt (MV) X-rays to exert radiosensitization effects, as demonstrated in cell survival assays and mouse experiments. However, the detailed mechanisms are not clear; besides physical dose enhancement, several chemical and biological processes have been proposed. Reducing the AuNP concentration while achieving sufficient enhancement is necessary for the clinical application of AuNPs. Here, we used positively charged (+) AuNPs to determine the radiosensitization effects of AuNPs combined with MV X-rays on DNA damage in vitro. We examined the effect

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25

Dobrzyńska, Małgorzata M., Urszula Czajka, and Maria G. Słowikowska. "Reproductive effects after exposure of male mice to vincristine and to a combination of X-rays and vincristine." Reproduction, Fertility and Development 17, no. 8 (2005): 759. http://dx.doi.org/10.1071/rd05065.

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This study was performed to investigate the effects of exposure to vincristine (VCR) alone (1 mg kg−1 or 2 mg kg−1) and in combination with X-rays (0.25 Gy + 1 mg kg−1 VCR or 1.00 Gy + 2 mg kg−1 VCR) on the quality and quantity of spermatozoa, and the offspring of exposed Pzh : Sfis male mice. Both VCR and X-rays plus VCR reduced testis weight and sperm count, caused deterioration with respect to sperm morphology, and caused a slight increase in DNA damage. Exposure of some stages of male germ cells to high doses of VCR either alone or in combination with X-rays reduced the rate of pregnant fe

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26

Bo'riyev, Maqsudjon Mehmon o'g'li. "STUDYING THE EFFECTS OF RADIATION DAMAGE USING X-RAY DIFFRACTION TECHNIQUES." JOURNAL OF UNIVERSAL SCIENCE RESEARCH 1, no. 10 (2023): 445–47. https://doi.org/10.5281/zenodo.8433464.

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X-ray crystallography is an empirical scientific method used to elucidate the arrangement of atoms and molecules within a crystal. When an incident beam of X-rays encounters a crystal, its crystalline structure causes the X-rays to diffract into specific directions. By measuring the angles and intensities of these diffracted beams, a crystallographer can generate a three-dimensional representation of the electron density within the crystal. From this electron density map, valuable information can be derived, including the average positions of atoms within the crystal, their chemical bonds, the

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27

Jabłoński, Ł., P. Jagodziński, D. Banaś, et al. "Measurements of X-rays excited by pulsed beams of highly charged ions from EBIS." Journal of Instrumentation 20, no. 06 (2025): C06004. https://doi.org/10.1088/1748-0221/20/06/c06004.

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Abstract The measurements of X-rays excited by pulsed beams of highly charged ions from an Electron Beam Ion Source (EBIS), which were performed using fast silicon drift detector (SDD), are discussed in context of count losses due to the detector dead time effect. We demonstrate that for pulsed X-rays the measured intensities can be strongly affected both by a SDD dead time and pulse length. In a dedicated measurements with constant intensity X-rays, which were excited by electrons from an electron gun, we showed that a SDD detector used is of paralyzable type and its dead time can be determin

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28

Chauhan, Vinita, Matthew Howland, Jeremy Chen, Barbara Kutzner, and Ruth C. Wilkins. "Differential Effects of Alpha-Particle Radiation and X-Irradiation on Genes Associated with Apoptosis." Radiology Research and Practice 2011 (2011): 1–9. http://dx.doi.org/10.1155/2011/679806.

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This study examined differential effects of alpha-(α-) particle radiation and X-rays on apoptosis and associated changes in gene expression. Human monocytic cells were exposed toα-particle radiation and X-rays from 0 to 1.5 Gy. Four days postexposure, cell death was measured by flow cytometry and 84 genes related to apoptosis were analyzed using real-time PCR. On average, 33% of the cells were apoptotic at 1.5 Gy ofα-particle radiation. Transcript profiling showed statistical expression of 15 genes at all three doses tested. Cells exposed to X-rays were <5% apoptotic at~1.5 Gy and induced l

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29

Wang, Lin-Min, Ni Li, Cui-Ping Ren та ін. "Sterility of Aedes albopictus by X-ray Irradiation as an Alternative to γ-ray Irradiation for the Sterile Insect Technique". Pathogens 12, № 1 (2023): 102. http://dx.doi.org/10.3390/pathogens12010102.

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The mosquito Aedes albopictus can transmit various arboviral diseases, posing a severe threat to human health. As an environmentally friendly method, sterile insect technology (SIT) is considered an alternative to traditional methods such as chemical pesticides to control Ae. albopictus. In SIT, the sterility of male mosquitoes can be achieved by γ-ray or X-ray radiation. Compared with γ-rays, X-rays are easier to obtain, cheaper, and less harmful. However, there is a lack of comparative assessment of these two types of radiation for SIT under the same controlled conditions. Here, we compared

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30

Wolk, Scott J., Ignazio Pillitteri, and Katja Poppenhaeger. "Observed effects of star-planet interaction." Proceedings of the International Astronomical Union 11, S320 (2015): 382–87. http://dx.doi.org/10.1017/s1743921316000272.

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AbstractSince soon after the discovery of hot Jupiters, it had been suspected that interaction of these massive bodies with their host stars could give rise to observable signals. We discuss the observational evidence for star-planet interactions (SPI) of tidal and magnetic origin observed in X-rays and FUV. Hot Jupiters can significantly impact the activity of their host stars through tidal and magnetic interaction, leading to either increased or decreased stellar activity – depending on the internal structure of the host star and the properties of the hosted planet. In HD 189733, X-ray and F

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31

Kanamori, H., N. Nakamori, K. Inoue, and E. Takenaka. "Effects of scattered X-rays on CT images." Physics in Medicine and Biology 30, no. 3 (1985): 239–49. http://dx.doi.org/10.1088/0031-9155/30/3/004.

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Stuckelberger, Michael E., Tara Nietzold, Bradley M. West, et al. "Effects of X-rays on Perovskite Solar Cells." Journal of Physical Chemistry C 124, no. 33 (2020): 17949–56. http://dx.doi.org/10.1021/acs.jpcc.0c04645.

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Spiller, Eberhard. "Coherence effects from visible light to X-rays." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 347, no. 1-3 (1994): 161–69. http://dx.doi.org/10.1016/0168-9002(94)91873-2.

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Zeng, Mingjing, Yangyi Zhang, Yifan Chang, and Youwei Tian. "Highly Collimated Monochromatic X-rays Generated by Collision of High-Energy Electrons with Tightly Focused Linearly Polarized Laser Pulse." Crystals 14, no. 1 (2023): 13. http://dx.doi.org/10.3390/cryst14010013.

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This article delves into the generation and modulation process of X-rays as high-energy photon sources. Using the principles of classical electrodynamics, this study enables nonrelativistic short pulse lasers to collide with high-energy electrons while the collision center is away from the focal point. This scattering method may produce X-rays with good collimation and monochromaticity, and it progressively approaches inverse Thomson scattering. We studied and analyzed the effects of different electron characteristics and laser parameter settings on the high-energy angular distribution and spe

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35

Yamanoi, Toyoko, and Hiromoto Nakazawa. "Parallel-beam X-ray diffractometry using X-ray guide tubes." Journal of Applied Crystallography 33, no. 2 (2000): 389–91. http://dx.doi.org/10.1107/s0021889899015344.

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A parallel-beam X-ray diffraction geometry using X-ray guide tubes is proposed to eliminate preferred-orientation effects in powder X-ray diffraction (XRD) patterns and for new applications of XRD. A bundle of X-ray guide tubes (polycapillaries) is used to provide an intense quasi-parallel (approximately 0.2° divergence) and large-diameter (approximately 20 mm) beam of X-rays needed for parallel-beam diffractometry. Mica and silicon particles were agitated inside a cylindrical chamber by a steady flow of N2gas so that they were randomly oriented. The quasi-parallel incident X-ray beam passed t

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36

Kashihara, Yasuharu, Hiroshi Yamazaki, Kenji Tamasaku, and Tetsuya Ishikawa. "Position of exit X-rays from rotated-inclined double-crystal monochromators." Journal of Synchrotron Radiation 5, no. 3 (1998): 679–81. http://dx.doi.org/10.1107/s0909049597015355.

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The rotated-inclined double-crystal monochromator (RIDCM) has been adopted to reduce the heat load from third-generation undulator radiation. The position of the exit X-rays from RIDCM has been calculated as a function of X-ray energy on the basis of diffraction theory including refraction effects. The results show that the positions of the exit X-rays vary over a wide range due to asymmetric reflection. Methods of fixing the exit position in RIDCM are also discussed.

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37

Sarshough, Samira, Kamal Hadad, and Reza Faghihi. "Particle size and concentration effects on low energy X-ray attenuation in nanostructure and microstructure materials." Nuclear Technology and Radiation Protection 33, no. 1 (2018): 75–80. http://dx.doi.org/10.2298/ntrp1801075s.

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The effects of microsize and nanosize particles in composite structures as well as the incident radiation energy on X-ray attenuation is the focus of this study. To examine these effects, composite samples with different particle sizes of Al2O3 and with different thicknesses were prepared. Characteristic X-rays are applied as monochromatic X-rays and measurements were performed using an X-ray tube with a secondary excitation source instead of radioisotopes. In order to improve the efficiency and minimize the background effects a special detection system was designed and prepared. The linear at

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38

Iwata, Hiromitsu, Tsuyoshi Shuto, Shunsuke Kamei, et al. "Combined effects of cisplatin and photon or proton irradiation in cultured cells: radiosensitization, patterns of cell death and cell cycle distribution." Journal of Radiation Research 61, no. 6 (2020): 832–41. http://dx.doi.org/10.1093/jrr/rraa065.

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Abstract The purpose of the current study was to investigate the biological effects of protons and photons in combination with cisplatin in cultured cells and elucidate the mechanisms responsible for their combined effects. To evaluate the sensitizing effects of cisplatin against X-rays and proton beams in HSG, EMT6 and V79 cells, the combination index, a simple measure for quantifying synergism, was estimated from cell survival curves using software capable of performing the Monte Carlo calculation. Cell death and apoptosis were assessed using live cell fluorescence imaging. HeLa and HSG cell

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Liu, Guili, Siming Guo, Zhen Wang, et al. "Assessment of the flux and monochromaticity characteristics of a polarized X-ray source." Nuclear Technology and Radiation Protection 39, no. 4 (2024): 251–60. https://doi.org/10.2298/ntrp2404251l.

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This paper presents an apparatus designed for the generation of polarized X-rays utilizing crystal Bragg diffraction techniques, which produces polarized X-rays energies within the range of 4-10 keV, facilitating the calibration of detection efficiency, energy resolution, polarization degree, and other parameters pertinent to polarized X-ray detectors. The apparatus comprises of a radiation source, a diffractive crystal, a rotating control mechanism, a detector and other components. High-precision generation of polarized X-rays can be achieved by diffracting through crystals with varying latti

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Knyazeva, I. R., M. A. Medvedev, L. P. Zharkova, K. V. Afanasyev, M. A. Bolshakov, and V. V. Rostov. "Pulse-repetitive microwave and X-ray exposure on human erythrocyte." Bulletin of Siberian Medicine 8, no. 1 (2009): 24–29. http://dx.doi.org/10.20538/1682-0363-2009-1-24-29.

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The effects of pulse-repetitive X-ray radiation and microwaves on the suspension of human erythrocyte was investigated in present work taking in to account changing their electrical capacitance. It was shown that the single 5-min exposure of suspension of erythrocyte to pulse periodic x-rays and microwaves causes the changes of the capacitance. The of the effect depends on the radiation type, the pulse repetition frequency, the radiation absorbed dose (in case of x-rays) and power flow density (in the case of microwaves).

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Wallingford, Kristina, and Lori Baas Rubarth. "Development and Evaluation of a Radiation Safety Program in the NICU." Neonatal Network 36, no. 5 (2017): 306–12. http://dx.doi.org/10.1891/0730-0832.36.5.306.

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AbstractPurpose: To develop and evaluate a radiation safety program used to educate NICU staff regarding safety procedures to minimize the effects of radiation on the newborn.Background: Advancements in medical care have resulted in infants born at lower gestational ages and higher acuity. With increased acuity comes an increase in diagnostic testing, including radiologic imaging. Although x-rays are necessary, they do not come without risk, including the future development of cancers.Methods: The number of x-rays completed in the NICU over a one-year period, was evaluated prior to the radiati

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Ledesma Céspedes, Nila, Ladisleny Leyva Samuel, and Lázaro Barrios Ledesma. "Use of radiographs in endodontic treatments in pregnant women." Odontologia (Montevideo) 1 (December 10, 2023): 07. http://dx.doi.org/10.62486/agodonto202307.

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X-rays are an effective method to diagnose alterations in hard tissues, which is why they are used in dental treatments; in Endodontics they are very useful. Pregnant women receive comprehensive dental care that includes pulpo-radicular treatments. The objective was: to describe the theoretical basis for the use of radiographs in pregnant women in need of endodontic treatment. A bibliographic review was carried out taking into account the most up-to-date scientific literature on the subject. 19 bibliographies were used. For the development of the research, the methods of documentary analysis,

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Henderson, Stephen J. "Isotope effects in solution small-angle X-ray scattering." Journal of Applied Crystallography 32, no. 1 (1999): 113–14. http://dx.doi.org/10.1107/s0021889898010498.

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While the difference between using heavy and light water as solvents for small-angle neutron scattering experiments is well known, the lesser difference for the case of small-angle X-ray scattering with these same isotopes of water has, as yet, not been reported. This difference for the case of X-rays is discussed and quantified for several familiar materials: polystyrene latexes, proteins and lipids.

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Bing, Zhitong, Guanghui Yang, Yanan Zhang, et al. "Proteomic analysis of effects by x-rays and heavy ion in HeLa cells." Radiology and Oncology 48, no. 2 (2014): 142–54. http://dx.doi.org/10.2478/raon-2013-0087.

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Abstract Background. Carbon ion therapy may be better against cancer than the effects of a photon beam. To investigate a biological advantage of carbon ion beam over X-rays, the radioresistant cell line HeLa cells were used. Radiationinduced changes in the biological processes were investigated post-irradiation at 1 h by a clinically relevant radiation dose (2 Gy X-ray and 2 Gy carbon beam). The differential expression proteins were collected for analysing biological effects. Materials and methods. The radioresistant cell line Hela cells were used. In our study, the stable isotope labelling wi

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45

Wozny, Anne-Sophie, Guillaume Vares, Gersende Alphonse, et al. "ROS Production and Distribution: A New Paradigm to Explain the Differential Effects of X-ray and Carbon Ion Irradiation on Cancer Stem Cell Migration and Invasion." Cancers 11, no. 4 (2019): 468. http://dx.doi.org/10.3390/cancers11040468.

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Although conventional radiotherapy promotes the migration/invasion of cancer stem cells (CSCs) under normoxia, carbon ion (C-ion) irradiation actually decreases these processes. Unraveling the mechanisms of this discrepancy, particularly under the hypoxic conditions that pertain in niches where CSCs are preferentially localized, would provide a better understanding of the origins of metastases. Invasion/migration, proteins involved in epithelial-to-mesenchymal transition (EMT), and expression of MMP-2 and HIF-1α were quantified in the CSC subpopulations of two head-and-neck squamous cell carci

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Zehi, Zakiyeh B., Asma Afshari, Seyyed M. A. Noori, Behrooz Jannat, and Mohammad Hashemi. "The Effects of X-Ray Irradiation on Safety and Nutritional Value of Food: A Systematic Review Article." Current Pharmaceutical Biotechnology 21, no. 10 (2020): 919–26. http://dx.doi.org/10.2174/1389201021666200219093834.

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X-ray is a non-thermal technology that has shown good efficacy in reducing pathogenic and spoilage bacteria, viruses and parasites. X-ray hygiene technology resulted in a high microbial loss in numerous food products, such as dairy products, ready-to-eat shrimp, oysters, fresh products, strawberries, shredded iceberg lettuce, and spinach leaves. Some X-ray studies on food safety have shown that X-ray is an effective technology and is also an appropriate alternative to the electron beam and gamma rays, and can be used in the food industry without side effects on human health. Besides, we review

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EHRENBERG, LARS, and NILS NYBOM. "CHEMICAL AND BIOLOGICAL EFFECTS OF NEUTRONS AND X-RAYS." Hereditas 38, no. 4 (2010): 481–501. http://dx.doi.org/10.1111/j.1601-5223.1952.tb02938.x.

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White, Richard H., David F. Edwards, and James A. Rathkopf. "Hardening optical coatings to the effects of x rays." Journal of Applied Physics 69, no. 4 (1991): 1901–8. http://dx.doi.org/10.1063/1.348760.

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Kabadi, N., P. Adrian, C. Stoeckl, et al. "The phase-2 particle x-ray temporal diagnostic for simultaneous measurement of multiple x-ray and nuclear emission histories from OMEGA implosions (invited)." Review of Scientific Instruments 93, no. 10 (2022): 103538. http://dx.doi.org/10.1063/5.0101648.

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Electron-temperature (T e) measurements in implosions provide valuable diagnostic information, as T e is negligibly affected by residual flows and other non-thermal effects unlike ion-temperature inferred from a fusion product spectrum. In OMEGA cryogenic implosions, measurement of T e(t) can be used to investigate effects related to time-resolved hot-spot energy balance. The newly implemented phase-2 Particle X-ray Temporal Diagnostic (PXTD) utilizes four fast-rise (∼15 ps) scintillator-channels with distinct x-ray filtering. Titanium and stepped aluminum filtering were chosen to maximize det

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Deng, Bing, Yi Quan, Zhilin Chen та Heyi Wang. "Radiation Effects of Normal B-Lymphoblastoid Cells after Exposing Them to Low-Dose-Rate Irradiation from Tritium β-rays". Biology 13, № 6 (2024): 418. http://dx.doi.org/10.3390/biology13060418.

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The effects of tritium at low doses and low dose rates have received increasing attention due to recent developments in fusion energy and the associated risks of tritium releases into the environment. Mitochondria have been identified as a potential candidate for studying the effects of low-dose/low-dose-rate radiation, with extensive experimental results obtained using X-ray irradiation. In this study, irradiation experiments were conducted on normal B-lymphoblastoid cells using HTO at varying doses. When compared to X-ray irradiation, no significant differences in cell viability induced by d

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