Results 81 to 90 of about 13,367,485 (282)

Atmospheric Water Harvesting Through Polymer Hydrogel Sorbents: Materials Chemistry, Design Strategies, and Applications

Advanced Science, EarlyView.
Polymer‐based hydrogels have emerged as promising materials for atmospheric water harvesting (AWH) due to their high water affinity, tunable network structure, and excellent moisture adsorption‐desorption performance. Functional hydrogel systems enable efficient water capture and controlled release under low‐energy conditions, offering a sustainable ...
Swagata Datta, Sushmit Sen, Nilanjan Dey, Amrita Chatterjee, Ananya Sadhu, Sudipta Sarkar, Pradip K. Maji   +6 more
wiley   +1 more source

Analysis of SAR exposure in 3G, 4G, 5G and emerging 6G mobile communication technologies on the human head Phantom model

Discover Electronics
The rapid evolution of mobile communication technologies from 3G to 4G, 5G, and now toward emerging 6G systems has renewed concerns about the potential health impacts of electromagnetic radiation emitted by cellular phones.
Al Imran, Changbiao Li, Yanpeng Zhang
doaj   +1 more source

"Specific Absorption Rate (SAR)/Maximum Permissible Exposure (MPE) Requirements and Testing Workshop," 2000 May 22-23

, 2013
Slides from "SAR/MPE Requirements and Testing Workshop," sponsored by H&H Enterprises.

core  

From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits

Advanced Science, EarlyView.
This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang, Meng Chen, Guanchen Li, Ruifeng Liu, Yingxin Wang, Ziran Zhao   +5 more
wiley   +1 more source

A Novel Mobile Phone Antenna for Effectively Reducing Specific Absorption Rate [PDF]

, 2018
In this paper, a novel mobile phone antenna that can effectively reduce the harm of electromagnetic radiation to the human body is proposed. An inverted F-shaped antenna (IFA) is designed to reduce specific absorption rate (SAR) and all the measurements ...
Li, Jun, Jun Li, Yejun He, Abbasi, Qammer H., Q.H. Abbasi, He, Yejun, Liang, Kun, Kun Liang   +7 more
core   +1 more source

Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon‐Based Artificial Dielectrics

Advanced Science, EarlyView.
A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Santosh Kumar Maurya, Ilan Goldberg, Rita Schmidt   +2 more
wiley   +1 more source

Variation of bio-effect of EM radiation in 5G mobile communication with age in a voxel family as determined by CST model calculation

Environment Conservation Journal
The study presents a comprehensive and systematic analysis of the Specific Absorption Rate (SAR). This quantity represents the amount of radiofrequency (RF) energy    absorbed by the human body in various anatomically shaped female phantoms.
Pooja Rani, Vijay Kumar, Parmanand Prakash Pathak   +2 more
doaj   +1 more source

EARLY DETECTION OF BREAST CANCER USING ULTRA WIDE BAND SLOT ANTENNA

Jurnal Ilmiah SINERGI, 2019
Breast cancer is the transformation of normal cells in the breast area into a malignant tumor, which is the second largest disease as a cause of death for women. Early detection is one way to avoid significant risks in breast cancer.
Yusnita Rahayu, Immanuel Waruwu
doaj   +1 more source

Design and development of tissue emulating liquids at microwave frequencies for specific absorption rate (SAR) evaluation

, 2015
Access is limited to UniMAP community.This project is about designing and development of tissue emulating liquid at 405 MHz and 2.45 GHz for Specific Absorption Rate (SAR) evaluation.
Noor Baizura, Md Adam
core  

An Engineered HR1‐Stem Helix‐HR2 Trimeric Platform for Developing Broad‐Spectrum Coronavirus Vaccines

Advanced Science, EarlyView.
Sun et al. report a self‐assembling trimeric subunit vaccine platform termed RHS, which integrates the JN.1 receptor‐binding domain (RBD) with the heptad repeat 1 (HR1), stem helix (SH), and heptad repeat 2 (HR2) regions. The SARS‐CoV‐2 RHS vaccine elicits variant‐reactive RBD‐specific antibodies and cross‐reactive SH‐specific antibodies against ...
Xikui Sun, Junhao Fan, Xiaolu Xie, Yuting Shi, Xiaoqing Liu, Tiefeng Xu, Sidi Yang, Keda Shi, Chengshu Xie, Shixiong Li, Siwen Chen, Ruoxi Cai, Ping He, Yuzhen Ye, Tao Chen, Xiancai Ma, Chunmei Li, Jingyou Yu, Deyin Guo   +18 more
wiley   +1 more source