Results 121 to 130 of about 1,526,878 (350)

A transimpedance amplifier using a novel current mode feedback loop [PDF]

open access: yes, 1995
We present a transimpedance amplifier stage based on a novel current mode feedback topology. This circuit employs NMOS and PMOS transistors exclusively and requires neither capacitor for stabilizing the transimpedance loop nor resistor for the ...
Anghinolfi, Francis   +4 more
core  

Ultrasound‐Triggered Gelation for Restoring Biomechanical Properties of Degenerated Functional Spinal Units

open access: yesAdvanced Healthcare Materials, EarlyView.
This study introduces an innovative approach to treating intervertebral disc degeneration using ultrasound‐triggered in situ hydrogel formation. Proof‐of‐concept experiments using optimized biomaterial and ultrasound parameters demonstrate partial restoration of biomechanical function and successful integration into degenerated disc tissue, offering a ...
Veerle A. Brans   +11 more
wiley   +1 more source

A CMOS Inverter-Based Active Feedback Transimpedance Amplifier

open access: yesPhotonics
This paper presents an inverter-based active feedback transimpedance amplifier (IAF-TIA), in which an active feedback is applied to a voltage-mode inverter-based TIA, and therefore, the controlled positive regeneration process enables the proposed IAF ...
Somi Park   +7 more
doaj   +1 more source

A 10 GHz Quasi-Optical Grid Amplifier Using Integrated HBT Differential Pairs [PDF]

open access: yes, 1992
We report the fabrication and testing of a 10 GHz grid amplifier utilizing sixteen GaAs chips each containing an HBT differential pair plus integral bias/feedback resistors.
Hacker, J. B.   +6 more
core   +1 more source

Targeting the ARRDC3–DRP1 Axis via hUMSC‐Derived Exosomal CRYAB for Neuroprotection in Cerebral Ischemia/Reperfusion Injury

open access: yesAdvanced Healthcare Materials, EarlyView.
Intranasally administered hUMSC‐derived exosomes modulate the CRYAB–ARRDC3–Drp1 axis, alleviating mitochondrial dysfunction and ferroptosis, enhancing neuronal survival, reducing oxidative stress, and promoting functional recovery in ischemia‐reperfusion injury, offering a promising therapeutic strategy for ischemic stroke.
Rong ji   +7 more
wiley   +1 more source

A 4-channel neural amplifier employing partial OTA sharing structure with variable gain and bandwidth for implantable neural recording applications

open access: yesAlexandria Engineering Journal
Objective: The design of a low-noise low-power 4-channel neural amplifier with variable bandwidth and gain for multi-channel electrode arrays is presented with application in recording of neural signals.
Mehdi Ashayeri, Mohammad Yavari
doaj   +1 more source

Polarographic carbon dioxide transducer amplifier [PDF]

open access: yes, 1971
Electronic amplifier contains matched pair of metal oxide semiconductor field effect transistor devices which have high input impedance and long-term stability.
Stillman, G.
core   +1 more source

Advances in Bioprinting to Model Immune‐Mediated Skin Diseases

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores how 3D bioprinting drives innovation in developing in vitro skin models that mimic immune‐mediated diseases. It highlights current technologies, key applications in studying skin pathologies, and emerging challenges. The review points toward future opportunities for improving disease modeling and advancing therapeutic and cosmetic ...
Andrea Ulloa‐Fernández   +4 more
wiley   +1 more source

Analysis and design of a class-D amplifier [PDF]

open access: yes, 1968
Analysis of a basic class-D amplifier circuit configuration shows its adaptability to a variety of applications. The feedback, input and output configuration and the frequency spectrum of the pulse-width-modulated signal are ...

core   +1 more source

Redefining Therapies for Drug‐Resistant Tuberculosis: Synergistic Effects of Antimicrobial Peptides, Nanotechnology, and Computational Design

open access: yesAdvanced Healthcare Materials, EarlyView.
Antimicrobial peptide (AMP)‐loaded nanocarriers provide a multifunctional strategy to combat drug‐resistant Mycobacterium tuberculosis. By enhancing intracellular delivery, bypassing efflux pumps, and disrupting bacterial membranes, this platform restores phagolysosome fusion and macrophage function.
Christian S. Carnero Canales   +11 more
wiley   +1 more source

Home - About - Disclaimer - Privacy