Closed circuit anesthesia answers the objections to open and semi-closed systems that are related to high delivery flow rates: pollution, cost, efficiency and the hydration of inhaled gases. But closed circuit anesthesia requires a good understanding of the amount of anesthetic agenda needed, and a convenient method of administering it. It is necessary use a reliable oxygen analyser, a carbon dioxide monitor and a circuit volatile agent analyzer.
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Micromachines (Basel)
January 2025
College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou 325035, China.
High-precision, low-power MEMS accelerometers are extensively utilized across civilian applications. Closed-loop accelerometers employing switched-capacitor (SC) circuit topologies offer notable advantages, including low power consumption, high signal-to-noise ratio (SNR), and excellent linearity. Addressing the critical demand for high-precision, low-power MEMS accelerometers in modern geophones, this work focuses on the design and implementation of closed-loop interface ASICs (Application-Specific Integrated Circuits).
View Article and Find Full Text PDFMicromachines (Basel)
December 2024
Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu 300092, Taiwan.
The development of bionic organ-on-a-chip technology relies heavily on advancements in in situ sensors and biochip packaging. By integrating precise biological and fluid condition sensing with microfluidics and electronic components, long-term dynamic closed-loop culture systems can be achieved. This study aims to develop biocompatible heterogeneous packaging and laser surface modification techniques to enable the encapsulation of electronic components while minimizing their impact on fluid dynamics.
View Article and Find Full Text PDFNat Commun
January 2025
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG-PHELIQS, 38000, Grenoble, France.
Hybrid superconductor-semiconductor Josephson field-effect transistors (JoFETs) function as Josephson junctions with gate-tunable critical current. Additionally, they can feature a non-sinusoidal current-phase relation (CPR) containing multiple harmonics of the superconducting phase difference, a so-far underutilized property. Here we exploit this multi-harmonicity to create a Josephson circuit element with an almost perfectly π-periodic CPR, indicative of a largely dominant charge-4e supercurrent transport.
View Article and Find Full Text PDFArtif Organs
January 2025
International Renal Research Institute of Vicenza (IRRIV), Vicenza, Veneto, Italy.
Background: Contrast-associated acute kidney injury (CA-AKI) is frequent in patients with chronic kidney disease who are submitted to cardiac endovascular procedures using iodinated contrast. In hemoadsorption, cartridges containing styrene-divinylbenzene sorbent resin are applied to remove substances from the blood through an extracorporeal circuit. Importantly, iodinated contrast is also removed via adsorption.
View Article and Find Full Text PDFNeural Regen Res
December 2024
Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University (The 904 Hospital of PLA), Wuxi, Jiangsu Province, China.
Spontaneous recovery frequently proves maladaptive or insufficient because the plasticity of the injured adult mammalian central nervous system is limited. This limited plasticity serves as a primary barrier to functional recovery after brain injury. Neuromodulation technologies represent one of the fastest-growing fields in medicine.
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