Results 41 to 50 of about 9,256,063 (344)

Crosslinking strategies in modulating methylcellulose hydrogel properties

open access: yesSoft Matter, 2023
This review explores the possible crosslinking approaches for methylcellulose hydrogels, elucidating each crosslinking method's role in modulating the hydrogels’ properties.
Bonetti, Lorenzo   +2 more
openaire   +3 more sources

Low dose and fast grating-based x-ray phase-contrast imaging using the integrating-bucket phase modulation technique

open access: yes, 2017
X-ray phase-contrast imaging has experienced rapid development over the last few decades, and in this technology, the phase modulation strategy of phase-stepping is used most widely to measure the sample's phase signal.
Gao, Kun   +6 more
core   +1 more source

Exploiting phage strategies to modulate bacterial transcription [PDF]

open access: yesTranscription, 2019
Bacteriophages employ small proteins to usurp host molecular machinery, thereby interfering with central metabolic processes in infected bacteria. Generally, phages inhibit or redirect host transcription to favor transcription of their own genomes. Mechanistic and structural studies of phage-modulated host transcription may provide inspirations for the
Markus C. Wahl, Ranjan Sen
openaire   +3 more sources

Research on Neural Network Global Optimization of Hybrid Full-Bridge Push-Pull Topology Based on Genetic Algorithm

open access: yesApplied Sciences
The traditional control strategies for bidirectional power supply full-bridge push-pull DC-DC topologies still face limitations in efficiency, dynamic response, and output stability.
Mingyang Xia, Guiping Du, Tiansheng Zhu
doaj   +1 more source

Comparative research of harmonic suppression algorithm of the three-level NPC converter

open access: yesThe Journal of Engineering, 2018
The three-level NPC converter is an effective solution to medium-voltage and high-power electronic converters. Modulation strategy is one of research focus of the three-level NPC converter.
Li Ning, Gao Tong, Zhang Hui, Yang Ping
doaj   +1 more source

Towards quantitative tissue absorption imaging by combining photoacoustics and acousto-optics [PDF]

open access: yes, 2012
We propose a strategy for quantitative photoacoustic mapping of chromophore concentrations that can be performed purely experimentally. We exploit the possibility of acousto-optic modulation using focused ultrasound, and the principle that photons follow
A. Hussain   +23 more
core   +4 more sources

Zero-sequence Current Suppressing Strategy for Dual Three-phase Permanent Magnet Synchronous Machines Connected with Single Neutral Point

open access: yesCES Transactions on Electrical Machines and Systems, 2022
Dual three-phase permanent-magnet synchronous machines (DTP-PMSM) connected with a single neutral point provide a loop for zero-sequence current (ZSC). This paper proposes a novel space vector pulse width modulation (SVPWM) strategy to suppress the ZSC ...
Zongwang Li   +4 more
doaj   +1 more source

An HDTV encoder for PALplus transmissions, supplemented with a digital residual signal [PDF]

open access: yes, 1996
This paper discusses the design of a video encoder which will enable PALplus compatible HDTV transmission, by embedding a digital residual component within the standard analogue PALplus television signal.
Buchwald, Wolf-Peter   +2 more
core   +1 more source

Methodology series module 5: Sampling strategies

open access: yesIndian Journal of Dermatology, 2016
Once the research question and the research design have been finalised, it is important to select the appropriate sample for the study. The method by which the researcher selects the sample is the ' Sampling Method'. There are essentially two types of sampling methods: 1) probability sampling - based on chance events (such as random numbers, flipping a
openaire   +3 more sources

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song   +15 more
wiley   +1 more source

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