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According to the requirement of channel research, a system for the measurement of skin impedance had been designed and a series of experiments to check the reliability of this system had also been done. The facts demonstrated that the pressure exerted by the exploring electrode, the duration of switch-on as well as the number of times of repeated measurements all showed no conspicuous influences on the skin impedance. The results are stable and reliable. Moreover, the measurement and data processing are controlled by microcomputer. Thus, the method of measurement of skin impedance along the channels has been developed to a higher level. Under the conditions of our experiment, the impedance of the low skin impedance points (LSIPs) are about 108k omega, which are quite low than that of the non-LSIPs around them. The difference between the two is highly significant. Both the impedance of LSIPs and non-LSIPs are stable, without marked variation. These results provide the prerequisites indispensable for the further observation on the feature of the distribution of LSIPs.
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Sci Adv
September 2025
State Key Laboratory for Manufacturing System Engineering, State Industry-Education Integration Center for Medical Innovations, International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Shaanxi Innovation Center for Special Sensing and Testing Technology in Extreme En
Continuous monitoring of cardiovascular vital signs can reduce the incidence and mortality of cardiovascular diseases, yet cannot be implemented by current technologies because of device bulkiness and rigidity. Here, we report self-adhesive and skin-conformal ultrasonic transducer arrays that enable wearable monitoring of multiple hemodynamic parameters without interfering with daily activities. A skin-adaptive focused ultrasound method with rational array design is proposed to implement measurement under wide ranges of skin curvatures and depths with improved sensing performances.
View Article and Find Full Text PDFDiagnostics (Basel)
August 2025
Dermatology Unit, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milano, Italy.
In recent decades, dermatological diagnostics have undergone a profound transformation, driven by the integration of new technologies alongside traditional methods. Classic techniques such as the Tzanck smear, potassium hydroxide (KOH) preparation, and Wood's lamp examination remain fundamental in everyday clinical practice due to their simplicity, speed, and accessibility. At the same time, the development of non-invasive imaging technologies and the application of artificial intelligence (AI) have opened new frontiers in the early detection and monitoring of both neoplastic and inflammatory skin diseases.
View Article and Find Full Text PDFPhysiol Meas
September 2025
Department of Physical Education, State University of Santa Catarina, Florianópolis, Santa Catarina, Brazil.
To investigate the association of phase angle (PhA) with body fat percentage, lean soft tissue, and bone mineral density (BMD) in adolescent athletes overall and stratified by sex and sexual maturity stage.A cross-sectional study was conducted with 112 adolescent athletes (67 boys, 14.25 ± 2.
View Article and Find Full Text PDFLangmuir
September 2025
Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
Sleep electroencephalography monitoring has become an effective strategy for health evaluation. However, conventional gel electrodes suffer from inherent limitations such as moisture loss and poor breathability, compromising long-term signal stability and wear comfort. Here, we present a facile strategy for fabricating breathable, biocompatible liquid-metal electrodes with enhanced interfaces.
View Article and Find Full Text PDFJ Anesth
August 2025
Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, 507 Zhengmin Road, Shanghai, 200043, China.
Background: Supraglottic jet ventilation (SJV) is used during flexible bronchoscopy to improve oxygenation, but its impact on overall lung ventilation is unclear. Thoracic electrical impedance tomography (EIT) offers real-time monitoring of respiratory function.
Methods: This prospective pilot study enrolled patients undergoing flexible bronchoscopy.