Results 41 to 50 of about 148,748 (316)

On the development of a MODEM for data transmission and control of electrical household appliances using the low-voltage power-line [PDF]

open access: yes, 2003
This paper presents a CMOS 0,6μm mixed-signal MODEM ASIC for data transmission on the low-voltage power line. The circuit includes all the analog circuitry needed for input interfacing and modulation/demodulation (PLL-based frequency synthesis, slave ...
Domínguez Matas, Carlos   +4 more
core   +1 more source

Design of a fast-acquisition phase-locked loop for frequency control systems

open access: yesDianzi Jishu Yingyong
Phase-locked loop (PLL) is a negative feedback control system that can achieve phase synchronization of two signals. Its filtering effect can make its passband narrow, and its output frequency automatically track the input frequency.
Chang Jian   +4 more
doaj   +1 more source

Overcharging and reentrant condensation of thermoresponsive ionic microgels [PDF]

open access: yes, 2018
We investigated the complexation of thermoresponsive anionic poly(N-isopropylacrylamide) (PNiPAM) microgels and cationic $\epsilon$-polylysine ($\epsilon$-PLL) chains. By combining electrophoresis, light scattering, transmission electron microscopy (TEM)
Bazzoni, Chiara   +5 more
core   +4 more sources

Preparation and characterization of bovine serum albumin nanoparticles modified by Poly-l-lysine functionalized graphene oxide for BMP-2 delivery

open access: yesMaterials & Design, 2022
The development of bioactive carrier with controlled delivery of Bone morphogenetic protein (BMP-2) is an important part in bone regeneration. Our study fabricated novel modified nanomaterials based on poly-l-lysine functionalized graphene oxide (GO-PLL)
Fan Liu   +6 more
doaj   +1 more source

The Floor‐Ceiling‐Chip, or 2 × 2D = Pseudo‐3D—Approaching 3D Cell Morphology and Organization between Two Opposing 2D Substrates with Cell‐Adhesive Protein Micropatterns

open access: yesAdvanced Healthcare Materials, EarlyView.
Here, we present a novel 3D cell patterning and culture platform. The “Floor‐Ceiling‐Chip” (FC‐Chip) consists of two opposing track‐etched membranes, creating a pseudo‐3D microenvironment for the cells in between. By providing the membranes with micropatterned cell‐adhesive islands of varying geometries and sizes, the FC‐Chip enables control over cell ...
Urandelger Tuvshindorj   +10 more
wiley   +1 more source

Modulation Identification and Carrier Recovery System for Adaptive Modulation in Satellite Communications [PDF]

open access: yes, 2005
We introduce the modulation identification technique implementing the multimode phase locked loop (PLL) in the satellite communication using adaptive modulation scheme which is a countermeasure against the rain attenuation.
Kohno, Ryuji   +2 more
core   +1 more source

Exploitation of Digital Filters to Advance the Single-Phase T/4 Delay PLL System [PDF]

open access: yes, 2016
With the development of digital signal processing technologies, control and monitoring of power electronics conversion systems have been evolving to become fully digital.
Blaabjerg, Frede   +2 more
core   +1 more source

A Long‐Lived Human Neurovascular PENTA Culture Model Captures Incomplete Vascular Repair and Glia‐Associated Signaling After Traumatic Brain Injury

open access: yesAdvanced Healthcare Materials, EarlyView.
A long‐lived, five‐cell‐type human neurovascular (PENTA) model recreates vascular disorganization and incomplete repair after traumatic brain injury (TBI). By integrating endothelial, glial, neuronal, and immune components within a 3D scaffold, the platform enables time‐resolved analysis of neurovascular remodeling and provides a human‐relevant system ...
Daniel S. Hinrichsen   +6 more
wiley   +1 more source

Tuning the Testicular Microenvironment for Enhancing Human Sertoli Cells Maturation and Functionality In Vitro

open access: yesAdvanced Healthcare Materials, EarlyView.
An in vitro testicular model is developed by generating connective tissue equivalents from human dermal fibroblast‐derived microtissues and coupling them with human Sertoli cells or human Sertoli cell spheroids. This engineered microenvironment supports Sertoli cell maturation and functionality, providing a promising platform for studying human ...
Annachiara Scalzone   +4 more
wiley   +1 more source

Polylysine complexes and their biomedical applications

open access: yesEngineered Regeneration, 2023
Poly-L-lysine (PLL) is a water-soluble biopolymer consist of repeating unit of L-lysine. It displays intrinsic non-antigenicity, antibacterial property, biocompatibility, and biodegradability, and facile synthesis procedure, therefore has attracted ...
Haofang Zhu   +3 more
doaj   +1 more source

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