Results 131 to 140 of about 193,238 (303)

The variable polarity plasma arc welding process: Its application to the Space Shuttle external tank [PDF]

The technical history of the variable polarity plasma arc (VPPA) welding process being introduced as a partial replacement for the gas shielded tungsten arc process in assembly welding of the space shuttle external tank is described.
Bayless, O. E., Jr., Jones, C. S., III, Munafo, A. P., Nunes, A. C., Jr., Wilson, W. A.   +4 more
core   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Comparative Studies on the Radiative Heat Transfer in Arc Plasma and Its Impact in a Model of a Free-Burning Arc

Plasma
The radiative heat transfer in arc plasma models is considered from the point of view of its description in terms of a net emission coefficient, the method of spherical harmonics in its lowest order, and the discrete ordinate method.
Margarita Baeva, Yann Cressault, Petr Kloc   +2 more
doaj   +1 more source

Development of a stable ultraviolet source and techniques for accurate radiometry Annual summary report, 1 Jan. - 31 Dec. 1965 [PDF]

Drawings and characteristics of small portable model of high pressure plasma arc source for stable accurate ultraviolet ...
Erminy, D. E., Hattenburg, A. T., Kostkowski, H. J., Yokley, C. R.   +3 more
core   +1 more source

Integrated Transcriptomics Reveals Evolutionary Trajectories and Cell Density‐Dependent Mechanisms in Aldosterone‐Producing Adenomas

Advanced Science, EarlyView.
Aldosterone‐producing adenomas (APAs) develop via two distinct paths: directly from adrenal zona glomerulosa (zG) cells, or stepwise from zG cells through aldosterone‐producing micronodules (APMs) before progressing to APAs. Advanced single‐cell and spatial analyses identified distinct cell states linked to oxidative stress and cell–cell interactions ...
Zhuolun Sun, Changying Jing, Martina Tetti, Siyuan Gong, Jia Wei, Yingxian Pang, Martin Reincke, Tracy Ann Williams   +7 more
wiley   +1 more source

New Deepwater Casing Cutting Technology——Arc Plasma Cutting Technology

Shiyou jixie, 2016
The arc plasma cutting technology can eliminate limitations of conventional cutting technology and simplify reutilization operating procedures of conventional abandoned well or drilling slot.By using the technology,multi-layer casing cutting operation ...
Dong Yuchen
doaj  

ELABELA Targets Mitochondria to Modulate Heart Development

Advanced Science, EarlyView.
The role of peptide ELABELA (ELA) in cardiomyocyte apoptosis and congenital heart disease (CHD) is unclear. ELA deficiency caused cardiomyocyte apoptosis and CHD. A novel ELA‐APJ‐AKT‐BCL2/BAX axis in regulating mitochondrial function and contributing to CHD pathogenesis was established.
Jian Wang, Qingjie Wang, Zhikang Xu, Shuang Zhou, Yue Zhou, Junjie Yang, Lingfeng Tong, Zhuo Meng, Mei Yang, Wen Zhao, Tie Yang, Hualin Wang, Jun Zhang, Rubin Tan, Lei Wang, Yuqiang Huang, Bin Zhou, Sun Chen, Bing Zhang, Jinxiang Yuan, Jianyuan Zhao, Alex F. Chen, Kun Sun   +22 more
wiley   +1 more source

A Plug‐and‐Play Volume Minimizing Micromixer

Advanced Science, EarlyView.
ABSTRACT Microscale fluid mixing has numerous applications where rapid and efficient mixing is required, including drug discovery, bio‐analysis and point‐of‐care diagnostics. Conventional soft lithography processes, however, make the integration of robust and reliable mixing difficult to implement in practice, especially across different flow rates ...
Kirill Kolesnik, Philipp Segeritz, Daniel J. Scott, David J. Collins   +3 more
wiley   +1 more source

Material‐Induced Nuclear Deformation Controls Chromatin Architecture in Adipose Stem Cells

Advanced Science, EarlyView.
Tuning cell and cytoskeleton mechanics modulated nuclear shape and heterochromatin organization in ASCs. Distinct cytoskeletal architectures induced nuclear morphologies from oblate to prolate ellipsoids. Large elongated cells with a structured actin cap exhibited high nuclear strain, driving nuclear envelope deformation and heterochromatin ...
Carlo F. Natale, Luca Messina, Valeria Panzetta, Stefania Saporito, Costantino Menna, Maurizio Ventre, Paolo A. Netti   +6 more
wiley   +1 more source

The plasmatron: Advanced mode thermionic energy conversion [PDF]

A theory of the plasmatron was developed. Also, a wide range of measurements were obtained with two versatile, research devices. To gain insight into plasmatron performance, the experimental results are compared with calculations based on the theoretical
Hansen, L. K., Hatch, G. L., Rasor, N. S.   +2 more
core   +1 more source