Results 131 to 140 of about 47,683 (307)

Low cost, SPF aluminum cryogenic tank structure for ALS [PDF]

Past production work has shown that cryogenic tank structure for the Shuttle Booster Rockets and the Titan system have very high life cycle costs for the fuel tank structure.
Anton, Claire E., Gandhi, Chimata, Hamilton, C. Howard, Hardwick, Dallis, Latham, Richard, Rasmussen, Perry, Ren, Ben, Thompson, Curt   +7 more
core   +1 more source

Thermocouple installation [PDF]

, 1976
A thermocouple assembly which includes a plug having a pair of small diameter holes near one end thereof which are spaced a small distance apart to leave a thin quantity of plug material between the holes is presented.
Macdavid, K. S., Potter, L. R., Powell, W. B.   +2 more
core   +1 more source

Stretching and welding indecomposable quadratic forms

Journal of Number Theory, 1991
A \({\mathbb Z}\)-lattice \(L\) on a rational quadratic space \((V,{\mathbb Q})\) is said to be indecomposable (with respect to \({\mathbb Q})\) if there exists a non-trivial orthogonal splitting of \(L\) into sublattices. In this paper, methods for the construction of new indecomposable positive definite integral quadratic lattices from known ones are
openaire   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

RESEARCH ON THE INFLUENCE FACTORS OF TAILOR-WELDED BLANKS WITH ARC-WELD-LINE

Jixie qiangdu, 2017
The method is to combine dynaform numerical simulation techniques and orthogonal experimental design to analyze the influence factors of intensity ratio,clearance between punch and die,thin side blank holder rate,friction coefficient,blank-holder force ...
GAN Yong, LI HongZHao, OUYANG JieWei, QIN Xi   +3 more
doaj  

MSFC evaluation of the space fabrication demonstration system (beam builder) [PDF]

The beam builder, designed and manufactured as a ground demonstration model, is a precursor to a machine for use in the space environment, transportable by the space shuttle. The beam builder has the capability to automatically fabricate triangular truss
Adams, E. O., Irvine, C. N.
core   +1 more source

Recent Advances in Electrospun Nanofibers for Triboelectric Nanogenerators: Performance Enhancement Strategies and Emerging Applications

Advanced Materials, EarlyView.
This review highlights recent advances in electrospun nanofiber‐based triboelectric nanogenerators, emphasizing how material design, fiber architecture, and interface engineering collectively enhance output performance and mechanical durability. Key developments in porous, aligned, core‐shell, and hierarchical nanofibers are discussed alongside ...
MD Fajla Rabbi, Jee Hwan Ahn, Duy Linh Vu, Kyoung Kwan Ahn   +3 more
wiley   +1 more source

Crack Repair in Hydroxyapatite Bioceramics Using an Ultraviolet Ultrafast Laser

Advanced Materials Interfaces, EarlyView.
The study proposes an ultrafast ultraviolet laser approach to repair hidden tooth cracks, which has been preliminarily validated on HAP. Moreover, this technique aims to strengthen the native enamel structure rather than introducing a foreign filling material.
Yan Xue, Kai Zheng, Yang Liao, Jing Cao, Xupeng Yuan, Fusong Yuan, Yuxin Leng   +6 more
wiley   +1 more source

Characteristics of welding laser beam and its influence on weld forming coefficient

Journal of Physics: Conference Series
Abstract Laser welding is a very complicated process. At present, there is no systematic research on the relationship between welding parameters and forming coefficient. By studying the internal relationship between laser parameters and the characteristics of welding laser, laser beam indexes, such as focusing index, are defined.
Lijun Han, Lei Jia, Wenchao Yu
openaire   +1 more source

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

Advanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi, Sang Won Lee, Mohammad Abrar Uddin, Sina Hassanpoor, Neha Suvindran, Katherine Le, Harun Arkaz, Harishkumar Narayana, Saeid Soltanian, Danial Khorsandi, Negar Hosseinzadeh Kouchehbaghi, Taeil Kim, Yangzhi Zhu   +12 more
wiley   +1 more source