Results 151 to 160 of about 215,329 (365)

Computational predictions of hydrogen-assisted fatigue crack growth [PDF]

arXiv
A new model is presented to predict hydrogen-assisted fatigue. The model combines a phase field description of fracture and fatigue, stress-assisted hydrogen diffusion, and a toughness degradation formulation with cyclic and hydrogen contributions. Hydrogen-assisted fatigue crack growth predictions exhibit an excellent agreement with experiments over ...
arxiv  

Interim guidelines for collecting, handling, and testing clinical specimens for COVID-19 : interim guidelines for collecting, handling, and testing clinical specimens from persons for coronavirus disease 2019 (COVID-19) [PDF]

Updated Dec. 21, 2020Updates as of December 18, 2020Clarification on the use of sterile swabs for upper respiratory specimen collection to preserve patient safety and specimen integrity.\u2022 Clarify specimen collection procedures for all swab types and

core  

Engineering Magnetotactic Bacteria as Medical Microrobots

Advanced Materials, EarlyView.
Magnetotactic bacteria (MTB) are living microorganisms that produce magnetosomes for navigation using the Earth's geomagnetic field. Their built‐in magnetic components, along with their intrinsic and/or modified biological functions, make them one of the most promising platforms for making future living and programmable microrobots.
Jiaqi Wang, Yi Xing, Michael Ngatio, Paulina Bies, Lu Lucy Xu, Liuxi Xing, Ahmed Zarea, Ashley V. Makela, Christopher H. Contag, Jinxing Li   +9 more
wiley   +1 more source

Stress, Strain, or Displacement? A Novel Machine Learning Based Framework to Predict Mixed Mode I/II Fracture Toughness [PDF]

arXiv
Accurate prediction of fracture toughness under complex loading conditions, like mixed mode I/II, is essential for reliable failure assessment. This paper aims to develop a machine learning framework for predicting fracture toughness and crack initiation angles by directly utilizing stress, strain, or displacement distributions represented by selected ...
arxiv  

Evaluation of the surface strength of glass plates shaped by hot slumping process

, 2014
The Hot Slumping Technology is under development by several research groups in the world for the realization of grazing-incidence segmented mirrors for X-ray astronomy, based on thin glass plates shaped over a mould at temperatures above the ...
Basso, S., Bavdaz, M., Borsa, F., Citterio, O., Civitani, M., D'Este, A., Dall'Igna, R., Ghigo, M., Martelli, F., Pareschi, G., Parodi, G., Proserpio, L., Salmaso, B., Silvestri, M., Sironi, G., Spiga, D., Tagliaferri, G., Wille, E.   +17 more
core   +1 more source

From Mechanoelectric Conversion to Tissue Regeneration: Translational Progress in Piezoelectric Materials

Advanced Materials, EarlyView.
This review highlights recent progress in piezoelectric materials for regenerative medicine, emphasizing their ability to convert mechanical stimuli into bioelectric signals that promote tissue repair. Key discussions cover the intrinsic piezoelectric properties of biological tissues, co‐stimulation cellular mechanisms for tissue regeneration, and ...
Xinyu Wang, Sílvio Terra Stefanello, Victor Shahin, Yun Qian   +3 more
wiley   +1 more source

Space biology initiative program definition review. Trade study 1: Automation costs versus crew utilization [PDF]

A significant emphasis upon automation within the Space Biology Initiative hardware appears justified in order to conserve crew labor and crew training effort.
Crenshaw, John, Sr., Hambright, R. N., Jackson, L. Neal, Mcfayden, G. M., Nedungadi, A., Tsuchida, M. S.   +5 more
core   +1 more source

Intertwined Topological Phases in TaAs2 Nanowires with Giant Magnetoresistance and Quantum Coherent Surface Transport

Advanced Materials, EarlyView.
Synthesis of topological semimetal TaAs2 nanowires in situ encapsulated with a thin SiO2 shell unravel a richness of intertwined topological phases manifested by their magnetotransport features: A near‐room‐temperature metal‐to‐insulator transition, strong expressions of topologically nontrivial surface transport, giant magnetoresistance with direction‐
Anand Roy, Anna Eyal, Roni Majlin Skiff, Barun Barick, Samuel D. Escribano, Olga Brontvein, Katya Rechav, Ora Bitton, Roni Ilan, Ernesto Joselevich   +9 more
wiley   +1 more source

Recommendations for Handling Radioactive Specimens Obtained by Sentinel Lymphadenectomy

, 2000
Patrick L. Fitzgibbons, Virginia A. LiVolsi   +1 more
openalex   +1 more source

Hydrogel‐Mediated Preservation of Live Tumor Explants for Drug Development in Peritoneal Metastases

Advanced Materials, EarlyView.
This study presents a hyaluronan‐based hydrogel platform preserving the native tumor microenvironment (morphology, tissue composition, histology) of patient‐derived explants from peritoneal metastases, enabling clinically relevant drug screening. Hydrogel properties such as stiffness and degradation are crucial for longer‐term histoculture.
Kenny Zhuoran Wu, Rockie Haiyao Ding, Zixuan Zhao, Clara Yieh Lin Chong, Ruochii You, Hengjia Zhou, Dong Hua Seah, Wei Qiang Leow, Hong Kit Lim, Sukanya Shyamasundar, Kanishka Fernando, Fathima Farzana Kuthubudeen, Gillian Ng, Chor Yong Tay, Narayanan Gopalakrishna Iyer, Chin‐Ann Johnny Ong, Eliza Li Shan Fong   +16 more
wiley   +1 more source