Solution of rat muscle actomyosin (AM) was exposed to pulse-modulated microwave. Carried frequency was 2375 MHz. The rectangular pulse modulation was in the range of 50-300 pulses per second. It was shown that AM activity was dependent both on modulation frequency as well as on microwave intensity. It was shown the frequencies of modulation which were changed ATP-ase activity of AM.
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Rev Sci Instrum
October 2023
The College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
With the continuous exploration of the bioelectric effect, nanosecond and picosecond pulsed electric fields used in cancer therapy and drug introduction have attracted great attention. In this paper, an ultrashort pulsed electric field generator is proposed, which connects two photoconductive semiconductor switches in parallel to generate unipolar and bipolar pulses. We described the experimental scheme of the generator and the simulation of the radio frequency combiner.
View Article and Find Full Text PDFMethods Mol Biol
January 2022
Regenerative Nanomedicine Lab, Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada.
Conventional ultrasound with frequency (2-15 MHz) has been a global diagnostic and therapeutic tool in clinical medicine, and high-frequency ultrasound (>30 MHz) has been a powerful investigative device for preclinical studies such as cardiovascular research. In this chapter, we describe the use of conventional ultrasound with a 2.5-10 MHz transducer as an investigative device for the measurement/detection of blood flow in rabbit model.
View Article and Find Full Text PDFSkin Res Technol
May 2021
Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Background: The clinical manifestations of early mycosis fungoides (eMF) are non-specific and similar to inflammatory skin diseases. High-frequency ultrasonography (HF-US) can show small structure of skin lesions and is helpful to provide information objectively.
Materials And Methods: A case-control study was designed in 62 patients with multiple erythemas and scales, including 18 eMF and 44 age-matched patients with eczema (EC) or psoriasis vulgaris (PsV).
Eur Phys J C Part Fields
May 2017
CERN, Geneva, Switzerland.
During 2015 the ATLAS experiment recorded [Formula: see text] of proton-proton collision data at a centre-of-mass energy of [Formula: see text]. The ATLAS trigger system is a crucial component of the experiment, responsible for selecting events of interest at a recording rate of approximately 1 kHz from up to 40 MHz of collisions. This paper presents a short overview of the changes to the trigger and data acquisition systems during the first long shutdown of the LHC and shows the performance of the trigger system and its components based on the 2015 proton-proton collision data.
View Article and Find Full Text PDFHum Reprod
July 2017
Division of Reproductive Medicine, Department of Obstetrics and Gynaecology, VU University Medical Center, 1081 HV Amsterdam, The Netherlands.
Study Question: Does long-term exogenous testosterone administration result in polycystic ovarian morphology (PCOM), determined by (3D) transvaginal ultrasound (TVU) in female-to-male transsexuals (FtMs).
Summary Answer: Long-term exogenous testosterone administration in FtMs does not result in PCOM determined by (3D) TVU.
What Is Known Already: The role of androgens in the pathophysiology of polycystic ovary syndrome (PCOS) is still unclear.
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