Results 81 to 90 of about 5,597,306 (275)

Enhanced Detection and Classification of Underwater Objects using ROV and Computer Vision [PDF]

JES: Journal of Engineering Sciences
Among the various challenges in underwater exploration, the identification and classification of objects, especially metallic items, hold significant importance in diverse contexts.
Mahmoud Abdalhafez, Ibrahim M H AbdelDaiam, Mohamed E. H. Eltaib, Mahmoud Abdelrahim   +3 more
doaj   +1 more source

A Retinal Matrix Stiffening Model Reveals FAK‐Dependent Mechanotransduction in Pericytes Underlies Vascular Destabilization

Advanced Materials, EarlyView.
In this study, we show that retinal matrix stiffness is increased in diabetic mice. Using engineered human vascular models with controlled matrix stiffness, we demonstrate that stiffening activates focal adhesion kinase (FAK) signaling in pericytes, suppresses Notch signaling, and disrupts vascular morphology.
Emily Warren, Alex Wu, Lucas Ramirez, Yaqing Huang, Connor Amelung, Sophia Saxonhouse, Sharon Gerecht   +6 more
wiley   +1 more source

Research on an Underwater Object Detection Network Based on Dual-Branch Feature Extraction

, 2023
Underwater object detection is challenging in computer vision research due to the complex underwater environment, poor image quality, and varying target scales, making it difficult for existing object detection networks to achieve high accuracy in ...
Mujiahui Yuan, Yaan Li, Xiao Chen, Xingwu Chen, Chenye Fan, Haiyan Wang   +5 more
core   +1 more source

Defined Matrices Reveal Epithelial‐ and Mesenchymal‐Specific Responses to Stiffness and Adhesion in Human iPSC‐Derived Intestinal Organoids

Advanced Materials, EarlyView.
Defined PEG hydrogels enable human iPSC‐derived intestinal organoid culture without Matrigel. PEG‐ and Matrigel‐cultured organoids both support duodenal‐like epithelial identity, but direct comparison reveals subtle epithelial differentiation‐marker shifts and stronger mesenchymal ECM‐remodeling/integrin programs in PEG.
Alicja Kuziola, Tamara Fawzi, Emma H. Kromann, Marion Leleu, Joanna M. Drelinkiewicz, Dusko Ilic, Cécile A. Dreiss, Joana F. Neves, Eileen Gentleman   +8 more
wiley   +1 more source

An Engineered Thio‐Amino Polymer Achieves Potent, Safe, and Broad Cell Type Delivery in the Lung Mapped by Spatial Transcriptomics

Advanced Materials, EarlyView.
Synthesis and screening of a polymer library produced a versatile and inhalable mRNA vehicle for the lungs (P81). Compared to a published LNP, P81 provides increased delivery efficacy, achieving widespread expression in broad cell types, with no toxicity.
Pramodkumar EK, Younghun Jung, Elex S. Rose, Jae Yeon Joo, James R. Rose, José A. F. Assumpção, Hyeyoon Jeong, Lorena C. S. Chaves, Blake Andrew Miller, João Paulo Pera Mendes, Hannah E. Peck, Charmy J. Patel, Loren E. Sasser, Heather Pathak, Varun V. Mosur, Jaehyeon Hwang, Guilherme de Oliveira Lopes, Merrilee Thoresen, Santiago Cornejo, Peres Badial, Alicia Olivier, Amelia R. Woolums, Samuele Stazzoni, Noemi Manganaro, Eleonora Nencini, Giulio Pierleoni, Emanuele Andreano, Rino Rappuoli, Nichole Orr‐Burks, Sarah R. Hosking, Nicholas S. Heaton, Eric R. Lafontaine, Robert J. Hogan, Francois Villinger, Daryll Vanover, Chiara Zurla, Philip J. Santangelo   +36 more
wiley   +1 more source

Light‐Controlled Localized Delamination and Blistering of Azobenzene‐Containing Polymer Thin Films in an Aqueous Environment

Advanced Materials Interfaces, EarlyView.
When exposed to light of a defined wavelength, the photoisomerization of azobenzene chromophores leads to polymer reorientation, generating stresses that result in solvent‐facilitated localized delamination of the film from the substrate. Additionally, blisters that form spontaneously when exposed to an aqueous environment can be manipulated via ...
James Robert Benson, Jonas Strobelt, Nino Lomadze, Svetlana Santer, Stephan Eickelmann   +4 more
wiley   +1 more source

Image-Fused-Guided Underwater Object Detection Model Based on Improved YOLOv7

, 2023
Underwater object detection, as the principal means of underwater environmental sensing, plays a significant part in the marine economic, military, and ecological fields. Due to the degradation problems of underwater images caused by color cast, blurring,
Zhenhua Wang, Guangshi Zhang, Congqin Yi, Kuifeng Luan, Mingjie Li   +4 more
core   +1 more source

Programmable Variable‐Stiffness Multilayer Elastomer Composites With High‐Aspect‐Ratio Low‐Melting‐Point Alloy Inclusions

Advanced Materials Technologies, EarlyView.
High‐aspect‐ratio low‐melting‐point alloy inclusions are embedded within multilayer silicone laminates to create thermally programmable stiffness. Sequential activation of alloy‐rich layers produces four distinct mechanical states and reconfigures tendon‐driven actuator trajectories under the same load.
Palpolage Don Shehan Hiroshan Gunawardane, Gyan Edbert Zesiro, Hao Zhou, Gursel Alici, Mu Chiao   +4 more
wiley   +1 more source

Recent Advances in Light‐Addressable Electrochemistry for Spatially Resolved Applications

Advanced Materials Technologies, EarlyView.
This comprehensive review highlights light‐addressable electrochemistry as a powerful tool that uses light to control localized chemical reactions on unstructured semiconductor surfaces. The work evaluates advanced strategies to optimize electrode materials for enhanced spatial resolution and stability. Furthermore, it showcases diverse applications in
Nhi Trang Vo, Sina Jamali, Nam‐Trung Nguyen   +2 more
wiley   +1 more source

Morphological edge enhancement and bottleneck layers for robust underwater object detection

Egyptian Informatics Journal
Underwater object detection is particularly challenging due to the inherent distortions, scattering, and light attenuation present in aquatic environments, which degrade visual clarity and impact detection accuracy.
Vasanthi Ponduri, Sumanth kumar Panguluri, D Vidyanadha Babu, Jammisetty Yedukondalu, Lakshmi Prasanna Kothala, Chandana Gowri Doddi   +5 more
doaj   +1 more source