Results 31 to 40 of about 13,367,485 (282)

Assessment of specific absorption rate reduction in human head using metamaterial

Science and Engineering of Composite Materials, 2014
In this paper, the specific absorption rate (SAR) reduction in human head with metamaterial attachment is calculated. The finite-difference time-domain (FDTD) method has been used to evaluate the SAR in an anatomically correct model of the human head. We
Faruque Mohammad Rashed Iqbal, Islam Mohammad Tariqul, Mohamed Nik Abdullah Nik   +2 more
doaj   +1 more source

Definition of a parameter for a typical specific absorption rate under real boundary conditions of cellular phones in a GSM networkd [PDF]

Advances in Radio Science, 2003
Using cellular phones the specific absorption rate (SAR) as a physical value must observe established and internationally defined levels to guarantee human protection.
D. Gerhardt
doaj  

Numerical examinations of simplified spondylodesis models concerning energy absorption in magnetic resonance imaging

Current Directions in Biomedical Engineering, 2016
Metallic implants in magnetic resonance imaging (MRI) are a potential safety risk since the energy absorption may increase temperature of the surrounding tissue. The temperature rise is highly dependent on implant size. Numerical examinations can be used
Hadert Nicole, Liu Qi, Zylka Waldemar
doaj   +1 more source

Specific Absorption Rate (SAR) value of mobile phones: An awareness study among mobile users [PDF]

, 2018
Mobile phone is an inevitable part of ones life. Once been luxury has now become necessity. It’s been used by all age group people for different application apart from calling and texting.
Varshney, Saurabh, Sharma, Suresh, Aggarwal, Pradeep, Malhotra, Manu, Manu Malhotra, Pradeep Aggarwal, Suresh Sharma, Saurabh Varshney   +7 more
core   +1 more source

Biological effect of SAR on the human head due to variation of dielectric properties at 1800 and 2450 MHz with different antenna substrate materials

Science and Engineering of Composite Materials, 2015
The aim of this study was to consider a possible discrepancy in electromagnetic (EM) absorption in the human head. The finite-difference time-domain (FDTD) method with the lossy Drude model was adopted in this study.
Faruque Mohammad Rashed Iqbal, Islam Mohammad Tariqul, Ullah Mohammad Habib   +2 more
doaj   +1 more source

Prediction of specific absorption rate in mother and fetus associated with MRI examinations during pregnancy

, 2006
There is uncertainty regarding the risk posed by magnetic resonance imaging (MRI) examinations to pregnant patients. The most frequently used methods, such as single-shot fast spin echo (ssFSE), often require operation at the specific absorption rate ...
Hand, J W, J.V. Hajnal, Hajnal, J.V., Thomas, E.L., Rutherford, M.A., Li, Y., E.L. Thomas, Y. Li, J.W. Hand, Hajnal, J V ; id_orcid, Thomas, E L, M.A. Rutherford, Hand, J.W., Rutherford, M A ; id_orcid   +13 more
core   +1 more source

Development of a Magnetic Fluid Heating FEM Simulation Model with Coupled Steady State Magnetic and Transient Thermal Calculation

Mathematics, 2021
Magnetic fluid hyperthermia has gained much attention in recent years due to its potential in cancer treatment. Magnetic fluid is a colloidal liquid made of nanoscale magnetic particles suspended in a carrier fluid.
Jakob Vizjak, Miloš Beković, Marko Jesenik, Anton Hamler   +3 more
doaj   +1 more source

Analyzing the SAR in Human Head Tissues under Different Exposure Scenarios

Applied Sciences, 2023
This paper deals with the assessment of induced specific absorption rate (SAR) in various human models under different exposure scenarios, including both laboratory measurements and simulations.
Ahmet Turgut, Begum Korunur Engiz
doaj   +1 more source

Integrated Multiband Smart Windows From UV to LWIR Based on Molecularly Engineered Thermochromic Hydrogels

Advanced Functional Materials, EarlyView.
A multiband smart window integrating a thermochromic poly (EEEA‐co‐NIPAM) hydrogel with functional layers, enabling dynamic VIS‐NIR solar modulation alongside UV shielding and low LWIR emissivity. The polymer network forms hydrogen‐bonding interactions, promoting chain collapse above a reduced lower critical solution temperature, and accelerating the ...
Jiashuo Sun, Yutong Tan, Congyuan Wei, Zhenhui Hu, Rui Zhu, Yu Zhao, Yueyue Guan, Ruifeng Zhang, Hengshan Wei, Ran Tao, Wang Zhang, Jingting Luo, Guofa Cai, Xi Chen, Yi Long, Yongsheng Yang, Jinqing Peng, Yujie Ke   +17 more
wiley   +1 more source

Anti‐Inflammatory and Neuroactive Effects of Polymer‐Coated Iron Oxide Nanoparticles Functionalized With Interleukin 4 for Spinal Cord Injury

Advanced Healthcare Materials, EarlyView.
Polymer‐coated IONPs functionalized with IL‐4 display respective neuroactive and anti‐inflammatory actions on neural progenitor cells and macrophages/microglia in vitro. When examined chronically in a rat experimental model of spinal cord injury, rGO scaffolds carrying these nanosystems adequately integrate into the lesion, significantly reduce ...
Julia Martínez‐Ramírez, Paloma Lozano‐Picazo, María de Lamo‐Atencia, Andrea Ferreras, Esther Benayas‐Martín, Elena Fernández‐López, Marina Sánchez‐Petidier, Verónica Barranco‐Maresca, Víctor Caz, Anne des Rieux, Juliana M. Rosa, María del Puerto Morales, María C. Serrano   +12 more
wiley   +1 more source