Erythrocytes membrane fluidity changes induced by adenylyl cyclase cascade activation: study using fluorescence recovery after photobleaching
In this study, fluorescence recovery after photobleaching (FRAP) experiments were performed on RBC labeled by lipophilic fluorescent dye CM-DiI to evaluate the role of adenylyl cyclase cascade activation in changes of lateral diffusion of erythrocytes membrane lipids. Stimulation of adrenergic receptors with epinephrine (adrenaline) or metaproterenol led to the significant acceleration of the FRAP recovery, thus indicating an elevated membrane fluidity. The effect of the stimulation of protein kinase A with membrane-permeable analog of cAMP followed the same trend but was less significant. The observed effects are assumed ...
Source: European Biophysics Journal : EBJ - April 16, 2024 Category: Physics Authors: A N Semenov A E Lugovtsov S A Rodionov Eu G Maksimov A V Priezzhev E A Shirshin Source Type: research
Knowledge-driven deep learning for fast MR imaging: Undersampled MR image reconstruction from supervised to un-supervised learning
Magn Reson Med. 2024 Apr 16. doi: 10.1002/mrm.30105. Online ahead of print.ABSTRACTDeep learning (DL) has emerged as a leading approach in accelerating MRI. It employs deep neural networks to extract knowledge from available datasets and then applies the trained networks to reconstruct accurate images from limited measurements. Unlike natural image restoration problems, MRI involves physics-based imaging processes, unique data properties, and diverse imaging tasks. This domain knowledge needs to be integrated with data-driven approaches. Our review will introduce the significant challenges faced by such knowledge-driven DL...
Source: Magnetic Resonance in Medicine - April 16, 2024 Category: Radiology Authors: Shanshan Wang Ruoyou Wu Sen Jia Alou Diakite Cheng Li Qiegen Liu Hairong Zheng Leslie Ying Source Type: research
SPINNED: Simulation-based physics-informed neural network for deconvolution of dynamic susceptibility contrast MRI perfusion data
CONCLUSION: These results support that the proposed SPINNED method can be a good alternative to the existing methods for resolving the deconvolution problem in DSC MRI. The proposed method does not require any separate ground-truth measurement for training and offers additional benefits of quick processing time and coverage of diverse clinical scenarios. Consequently, it will contribute to more reliable, accurate, and rapid diagnoses in clinical applications compared with the previous methods including those based on supervised learning.PMID:38623911 | DOI:10.1002/mrm.30095 (Source: Magnetic Resonance in Medicine)
Source: Magnetic Resonance in Medicine - April 16, 2024 Category: Radiology Authors: Muhammad Asaduddin Eung Yeop Kim Sung-Hong Park Source Type: research
Untrained neural network enabling fast and universal structured-illumination microscopy
Structured-illumination microscopy (SIM) offers a twofold resolution enhancement beyond the optical diffraction limit. At present, SIM ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Zitong Ye Xiaoyan Li Yile Sun Yuran Huang Xu Liu Yubing Han Cuifang Kuang Source Type: research
Quickly tunable ultra-narrow filter via a metal film waveguide
The development of fast, efficient, and cost-effective tunable optical filters is a tireless pursuit of the goal in the field of optical ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Hongrui Shan Qiheng Wei Hailang Dai Xianfeng Chen Source Type: research
Multi-channel delay sampling to extend imaging depth in high-speed swept-source OCT systems
We present a multi-channel delay sampling method to extend imaging depth in high-speed swept-source optical coherence tomography (SS-OCT). ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Yaping Shi Jian Liu Zhaoyu Gong Christopher Burger Vijaysekhar Jayaraman Ruikang K. Wang Source Type: research
Switchable hybrid-order optical vortex lattice
Optical vortex (OV) modulation is a powerful technique for enhancing the intrinsic degrees-of-freedom in structured light applications. ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Xueyun Qin Hao Zhang Miaomiao Tang Yujie Zhou Yuping Tai Xinzhong Li Source Type: research
Influence of static and dynamic ocular aberrations on full-field optical coherence tomography for in vivo high-resolution retinal imaging
Under spatially incoherent illumination, time-domain full-field optical coherence tomography (FFOCT) offers the possibility to achieve in ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Yao Cai Olivier Thouvenin Kate Grieve Pedro Mec ê Source Type: research
Broadband long-wavelength upconversion in ultra-short nonlinear crystals
Since the inception of the second-order nonlinear frequency conversion in 1961, enhancing the inherent low conversion efficiency has been a ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Peter Tidemand-Lichtenberg Christian Pedersen Source Type: research
Optical wireless communication using a flexible and waterproof perovskite color converter
In this Letter, the CH_3NH_3PbBr_3 nanocrystals (NCs) are embedded into the interstices of the fluorine (polyvinyl fluoride/polyvinylidene ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Feifei Qin Feng Chen Yue Cao Linning Wang Chengwei Wang Yanan Liao Yuhang Dai Junfeng Lu Xinru Lan Xu Wang XianWu Tang Xiaoyan Liu Gangyi Zhu Yongjin Wang Source Type: research
Intense emission at 605?nm from Pr^3+-doped fluorotellurite glass fibers
Pr^3+-doped fluorotellurite glass fibers (PDFTFs) were fabricated by using a rod-in-tube method. By using a 976/1400?nm dual-wavelength ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Jinming Yan Zhixu Jia Junjie Wang Chuanze Zhang Fangning Wang Fanchao Meng Yasutake Ohishi Daming Zhang Weiping Qin Fei Wang Guanshi Qin Source Type: research
Mn^2+/Mg^2+ co-doped AlON ceramic with ultra-narrowband green emission combining high transparency toward a wide gamut backlight application
Narrowband green-emission, combined with superior physicochemical stability and thermal performance, is regarded as a common pursuit in ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Xiaolan Zhou Shengyuan Chen Cong Zhang Xu Huang Kailei Lu Jianqi Qi Tiecheng Lu Source Type: research
Terahertz metalens for generating multi-polarized focal points and images with uniform intensity distributions
Metasurfaces have provided a flexible platform for designing ultracompact metalenses with unusual functionalities. However, traditional ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Binbin Lu Yefei Fu Teng Zhang Zuanming Jin Xiaofei Zang Yiming Zhu Source Type: research
Structural and optical performance of NiV/Ti multilayer mirrors for Z-pinch plasma diagnostic at the wavelength region of 350 – 450?eV
This Letter reports on investigations of novel, to the best of our knowledge, NiV(Ni_93V_7)/Ti multilayer mirrors for the operation in the ... (Source: Optics Letters)
Source: Optics Letters - April 16, 2024 Category: Physics Authors: Zile Wang Zhe Zhang Jialian He Angelo Giglia Qiya Zhang Runze Qi Qiushi Huang Shengzhen Yi Zhong Zhang Zhanshan Wang Source Type: research
Experimental implementation of a quantum zero-knowledge proof for user authentication
A new interactive quantum zero-knowledge protocol for identity authentication implementable in currently available quantum cryptographic ... (Source: Optics Express)
Source: Optics Express - April 16, 2024 Category: Physics Authors: Marta I. Garc í a-Cid Dileepsai Bodanapu Alberto Gatto Paolo Martelli Vicente Mart í n Laura Ortiz Source Type: research
