Article
Plant Sciences
N. S. Mshenskaya, M. A. Grinberg, E. A. Kalyasova, V. A. Vodeneev, N. V. Ilin, N. N. Slyunyaev, E. A. Mareev, Y. V. Sinitsyna
Summary: Magnetic fields with a frequency of 14.3 Hz were found to have a protective effect on wheat plants under drought conditions, delaying harmful changes in transpiration and photosynthesis processes for several days.
Article
Biochemical Research Methods
Behnaz Rashidieh, Alireza Madjid Ansari, Mahdi Behdani, Behrad Darvishi, Mahdi Habibi-Anbouhi
Summary: The expression of proteins in bacterial host cells, particularly E.coli, has been a subject of interest. However, low expression outcome has limited its large-scale application in industry. This study investigated the effects of extremely low frequency magnetic fields (ELF-MFs) on protein expression in E.coli, and found that specific ELF-MF conditions can enhance protein expression.
ANALYTICAL BIOCHEMISTRY
(2022)
Article
Physics, Applied
Xin Li, Qi Wang, Wei Gao, Ziyang Shi, Hao Guo, Zhengjie Luo, Zhonghao Li, Huanfei Wen, Zongmin Ma, Jun Tang, Jun Liu
Summary: This paper proposes a set of schemes to generate, detect, and identify multi-frequency magnetic fields in the extremely low-frequency range based on quantum sensors. The schemes utilize nitrogen-vacancy centers in diamond as magnetic sensitivity elements and employ closed-loop proportional-integral-differential locking and microwave modulation-demodulation techniques to obtain magnetic field information. By training and identifying with the DenseNet network structure, the recognition rate achieves a high level.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Marina Grinberg, Maxim Mudrilov, Elizaveta Kozlova, Vladimir Sukhov, Fedor Sarafanov, Andrey Evtushenko, Nikolay Ilin, Vladimir Vodeneev, Colin Price, Evgeny Mareev
Summary: Magnetic field oscillations may affect the growth and responses of plants to environmental factors. In this study, it was found that a low-frequency magnetic field can modulate the light-induced electric reactions of wheat. Fluorescent and inhibitory analysis revealed the involvement of calcium ions and plasma membrane H+-ATPase in the development of the reaction, with the magnetic field activating H+-ATPase through increased calcium influx.
PLANT SIGNALING & BEHAVIOR
(2022)
Article
Spectroscopy
Sherif S. Mahmoud, Amal A. Ibrahim, Eman M. Aly, Mervat A. Ali
Summary: The study shows that magnetic field treatment has positive effects on blood and erythrocytes of fibromyalgia patients, including enhanced energetic pathways, increased hemoglobin-oxygen affinity, improved erythrocyte elasticity and rehydration. In addition, magnetic field treatment is associated with changes in the erythrocyte protein structure, specifically the alpha-helix component.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Engineering, Electrical & Electronic
Feichi Lin, Huan Zheng, Bing Xiang, Rui Xu, Wei Jiang, Liang Lang
Summary: Extremely low frequency magnetic antennas are commonly used in geophysical exploration and other applications, but vibration can lead to additional electromagnetic noise. Experimental results show that vibration-induced noise is a major source of antenna electromagnetic noise, but it can be reduced to the level of ambient electromagnetic noise with proper vibration isolation technology.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Biochemistry & Molecular Biology
Seongmoon Jo, Sang Hee Im, Dongryul Seo, Hayeon Ryu, Sung Hoon Kim, Dawoon Baek, Ahreum Baek, Sung-Rae Cho
Summary: The study found that low-frequency rMS treatment can suppress the progression of neuroblastoma by downregulating the Wnt/β-catenin signaling pathway. This suggests that low-frequency rMS treatment may be a potential therapeutic strategy for tumor suppression.
BIOELECTROCHEMISTRY
(2022)
Article
Geosciences, Multidisciplinary
Z. Nemecek, J. Safrankova, K. Grygorov, A. Mokry, G. Pi, M. Aghabozorgi Nafchi, F. Nemec, N. Xirogiannopoulou, J. Simunek
Summary: The position of the magnetopause is mainly influenced by the solar wind dynamic pressure and the north-south interplanetary magnetic field component. By comparing observations and model predictions, researchers found that the magnetopause position is well predicted for cases up to a certain distance, but larger discrepancies are found under certain conditions. These discrepancies are linked to transient magnetopause displacements caused by strong sunward flows in the magnetosheath.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Food Science & Technology
Swati Mahato, Zhiwei Zhu, Da-Wen Sun
Summary: This study examined the potential significance of extremely low-frequency electromagnetic fields (ELF-EMF) at frequencies ranging from 40 to 70 Hz in inducing biological effects during chilled storage of grass carp. The results showed that treatment with 50 and 60 Hz frequencies significantly increased Ca2+ATPase activity and pH, while reducing the total sulfhydryl content. The treatment at 50 Hz had the most pronounced effects, indicating a potential "window" effect in enhancing the quality of myofibrillar protein during chilled storage.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Anatomy & Morphology
Nicola delli Muti, Gianmaria Salvio, Alessandro Ciarloni, Michele Perrone, Giovanni Tossetta, Raffaella Lazzarini, Massimo Bracci, Giancarlo Balercia
Summary: This study examined the effects of extremely low frequency magnetic fields (ELF-MF) on sperm parameters. The findings showed that exposure to ELF-MF at a frequency of 50 Hz (1 mT) for two hours led to significant changes in progressive motility, morphology, and the production of reactive oxygen species in human spermatozoa, suggesting that ELF-MF plays a role in altering reproductive function.
Article
Chemistry, Multidisciplinary
Zuzana Judakova, Roman Radil, Ladislav Janousek, Ivana Pobocikova
Summary: The presented work aims to experimentally verify the ion parametric resonance theory in relation to the biological reaction to an externally applied, extremely low-frequency magnetic field. The study focuses on the effect of calcium ions and the B-AC/B-DC ratio on biological responses. The results show that the frequency of 29.89 Hz and a B-AC/B-DC ratio of 1.8 exhibit bioactivity, and the sensitivity analysis identifies additional bioactive frequencies of 24.89 Hz and 34.89 Hz. This research contributes to a better understanding of the mechanisms by which low-frequency magnetic fields affect biological systems.
APPLIED SCIENCES-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Changyou Chen, Pingping Wang, Haitao Chen, Xue Wang, Malka N. Halgamuge, Chuanfang Chen, Tao Song
Summary: Magnetotactic bacteria are microorganisms that can synthesize magnetic nanoparticles called magnetosomes. The intact cells of Magnetospirillum magneticum AMB-1 show promising potential as a natural material for cancer therapy using magnetic hyperthermia. In both in vitro and in vivo experiments, the intact cells demonstrate superior heating capability compared to magnetosome chains or individual magnetosomes. They also exhibit better dispersal and decreased cellular viability when incubated with tumor cells under an alternating magnetic field. In vivo experiments with mice further confirmed the excellent antitumor activity of intact AMB-1 cells compared to other treatment groups.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Xuan Sun, Jingen Wu, Xianfeng Liang, Yongjun Du, Yiwei Xu, Yuhan Qu, Mengmeng Guan, Hui Huang, Fuchao Li, Sujie Liu, Dengfeng Ju, Zhiguang Wang, Zhongqiang Hu, Jinghong Guo, Ming Liu
Summary: Magnetoelectric (ME) sensors based on piezoelectric/ferromagnetic composites have been extensively investigated for their resonance-enhanced ME coupling effect and high sensitivity for magnetic field. However, their sensitivity drops rapidly away from resonance, making them unsuitable for low-frequency applications. In this work, we study the optimized amplitude and frequency of the modulation field, which significantly improve the sensitivity at low frequency without increasing the noise level. A magnetic field of 200 pT is detected at 10 Hz with a near-flat frequency response in the range of 1-100 Hz, showing promising potential for low-frequency applications in smart grid and renewable energy.
IEEE SENSORS JOURNAL
(2023)
Article
Optics
Chen-Xi Zhu, Xingxiang Zhou, Guang-Can Guo, Zheng-Wei Zhou
Summary: In this study, a full sawtooth lattice model with simulated magnetic and electric fields is constructed using orbital angular momentum (OAM) modes in a degenerate optical cavity. The critical parameters can be adjusted by taking advantage of optical interference implemented with simple optical circuit designs, allowing a wide range of simulations. The results significantly extend photonic OAM quantum simulation by enabling a sophisticated model involving both electric and magnetic fields.
Article
Optics
Chen -Xi Zhu, Xingxiang Zhou, Guang-Can Guo, Zheng-Wei Zhou
Summary: We have constructed a full sawtooth lattice model in a degenerate optical cavity, simulating magnetic and electric fields using orbital angular momentum (OAM) modes. Our system offers great versatility in adjusting critical parameters and investigating wave packet behavior dictated by fundamental physics in the sawtooth model.