Results 41 to 50 of about 197,759 (301)

MSD-Net: Multi-scale dense convolutional neural network for photoacoustic image reconstruction with sparse data

Photoacoustics
Photoacoustic imaging (PAI) is an emerging hybrid imaging technology that combines the advantages of optical and ultrasound imaging. Despite its excellent imaging capabilities, PAI still faces numerous challenges in clinical applications, particularly ...
Liangjie Wang, Yi-Chao Meng, Yiming Qian
doaj   +1 more source

Generation and Amplification of Third-Order Orbital Angular Momentum Modes in a Low-Loss All-Fiber System

IEEE Photonics Journal, 2023
We theoretically and experimentally proposed the generation method of third-order orbital angular momentum (OAM) modes with reduced losses by cascading two adiabatic mode selective couplers (MSCs), in which the LP11 mode produced as an excitation mode ...
Mengdi Zhang, Jianxiang Wen, Yan Wu, Ying Cao, Yanhua Luo, Xiaobei Zhang, Fufei Pang, Wei Chen, Tingyun Wang   +8 more
doaj   +1 more source

Laser Linewidth Compression in Cascading Brillouin Random Fiber Lasers

IEEE Photonics Journal, 2022
Cascaded Brillouin random fiber lasers (BRFLs) with laser linewidth compression were theoretically and experimentally demonstrated. Thanks to photon-phonon coupled interplay as well as randomly distributed feedback along silica fibers, the coherent time ...
Yikun Jiang, Liang Zhang, Haozhe Shou, Haoran Xie, Jilin Zhang, Yichun Li, Ying Zhang, Fufei Pang, Tingyun Wang   +8 more
doaj   +1 more source

Integrated optics for astronomical interferometry - VI. Coupling the light of the VLTI in K band [PDF]

, 2005
Our objective is to prove that integrated optics (IO) is not only a good concept for astronomical interferometry but also a working technique with high performance.
A. Delboulbé, A. Glindemann, Berger, Berger, Coudé du Foresto, Coudé du Foresto, Davis, Di Folco, Domiciano de Souza, F. Malbet, F. Zabihian, Glindemann, Haguenauer, J.-B. LeBouquin, J.-P. Berger, K. Rousselet-Perraut, Kern, Kervella, Kervella, Kervella, L. Jocou, Laurent, LeBouquin, M. Schöeller, Malbet, Malbet, P. Kern, P. Labeye, Pijpers, Richichi, Ségransan, Tatulli, Wittkowski   +32 more
core   +5 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Numerical model for enhancing stimulated Brillouin scattering in optical microfibers [version 2; peer review: 1 approved, 2 approved with reservations]

F1000Research, 2022
Stimulated Brillouin scattering (SBS) is useful, among others for generating slow light, sensing and amplification. SBS was previously viewed as a poor method due to the limitation on optical power in high-powered photonic applications.
Siamak Dawazdah Emami, Hairul Azhar Abdul-Rashid, Soon Heng Yeap   +2 more
doaj   +1 more source

Single-shot non-interferometric measurement of the phase transmission matrix in multicore fibers [PDF]

, 2018
A simple technique for far-field single-shot non-interferometric determination of the phase transmission matrix of a multicore fiber with over 100 cores is presented. This phase retrieval technique relies on the aperiodic arrangement of the cores.Comment:
Alonso, Miguel A., Andresen, Esben Ravn, Bouwmans, Géraud, Oron, Dan, Rigneault, Hervé, Sivankutty, Siddharth, Tsvirkun, Viktor   +6 more
core   +2 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

$\mathcal{PT}$ phase control in circular multicore fibers

, 2016
We consider light dynamics in a circular multicore fiber with balanced gain and loss core distribution, and show that transition from unbroken to broken $\mathcal{PT}$ phases can be conveniently controlled by geometric twist of the fiber.
Longhi, Stefano
core   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

Molecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski, Sławomir Lasota, Ewelina Madej, Anna A. Brożyna, Małgorzata Szczygieł, Agnieszka Harazin‐Lechowska, Jan Czerbniak, Janusz Rys, Jaroslaw Czyz, Agnieszka Wolnicka‐Glubisz   +9 more
wiley   +1 more source