Results 181 to 190 of about 339,266 (327)

Large-scale V/STOL testing [PDF]

Several facets of large-scale testing of V/STOL aircraft configurations are discussed with particular emphasis on test experience in the Ames 40- by 80-Foot Wind Tunnel.
Aiken, T. N., Aoyagi, K., Falarshi, M. D., Koenig, D. G.   +3 more
core   +1 more source

State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control

Advanced Science, EarlyView.
High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu, Yunfeng Ye, Tao Dong, Zhaochu Yang, Nuno Miguel Matos Pires, Yu Zhou, Fuyu Tao, Jin Wang, Junshan Zhang, Guoxi Luo, Libo Zhao, Qi Mao, Yangtao Wang, Zhuangde Jiang   +13 more
wiley   +1 more source

A rotorcraft flight database for validation of vision-based ranging algorithms [PDF]

A helicopter flight test experiment was conducted at the NASA Ames Research Center to obtain a database consisting of video imagery and accurate measurements of camera motion, camera calibration parameters, and true range information.
Smith, Phillip N.
core   +1 more source

Dual‐Working‐Pattern Nanosheet‐Based Hydrogel Sensors for Constructing Human‐Machine and Physiological‐Electric Interfaces

Advanced Science, EarlyView.
Hydrogels hold great potential as candidates for next‐generation epidermal electronics; however, an unresolved issue remains: the differentiation and selection of sensing modes in hydrogel sensors. This study integrates series‐parallel conductive nanosheet configurations into an ultra‐soft hydrogel, resulting in enhanced signal intensity and ...
Shitao Shi, Yuanyuan Wang, Zewei Ye, Hongxia Xie, Chencong Liu, Jiaqi Liao, Dawei Zhao, Qingfeng Sun, Julia L. Shamshina, Xiaoping Shen   +9 more
wiley   +1 more source

Wing force and surface pressure data from a hover test of a 0.658-scale V-22 rotor and wing [PDF]

A hover test of a 0.658-scale V-22 rotor and wing was conducted in the 40 x 80 foot wind tunnel at Ames Research Center. The principal objective of the test was to measure the surface pressures and total download on a large scale V-22 wing in hover.
Felker, Fort F., Heffernan, Ruth M., Sheehy, Hugh F., Shinoda, Patrick R.   +3 more
core   +1 more source

A Classroom Modification of the Ames Test

The American Biology Teacher, 1979
Victor Trzeciak, Joseph Yavornitzky
openaire   +2 more sources

RIG‐I‐Inducing Small Molecules Potently Inhibit HMA‐Resistant AML Through Igniting the Overloaded dsRNA Arsenal

Advanced Science, EarlyView.
This study reveals a novel mechanism of resistance to DNA hypomethylating agents (HMAs) in acute myeloid leukemia (AML), and identifies all‐trans retinoic acid (ATRA) and tamibarotene (TAM) as potent agents that overcome HMA resistance by reactivating the interferon anticancer immune response. The findings offer promising therapeutic strategies for HMA‐
Xueqin Chen, Jiaqi Wu, Yuntong Li, Jiayu Huang, Xiangqin Weng, Jiale Wu, Shujun Xiao, Huaxin Song, Zhengyuan Wang, Ni Yan, Fangfang Shi, Derun Zheng, Kai Tan, Hesong Zhang, Jingyi Cui, Wen Wu, Wei Wu, Sujiang Zhang, Min Lu   +18 more
wiley   +1 more source

Upgrading of NASA-Ames high-energy hypersonic facilities: A Study [PDF]

This study reviews facility capabilities of NASA, Ames Research Center to simulate hypersonic flight with particular emphasis on arc heaters. Scaling laws are developed and compared with ARCFLO II calculations and with existing data.
Carlson, William C. A., Shepard, Charles E.   +1 more
core   +1 more source

Coactosin‐Like Protein Reduces Prostaglandin D2 Production in Alveolar Macrophages and Alleviates Allergic Airway Inflammation

Advanced Science, EarlyView.
Coactosin‐like protein inhibits prostaglandin D₂ (PGD2) secretion by modulating alveolar macrophage polarization, thereby suppressing activation of the PGD2 receptor CRTH2 in Th2‐associated immune cells and alleviating allergic airway inflammation.
Li‐Long Pan, Zhengnan Ren, Binbin Li, Wenjie Liang, Yang Luo, Qin Yang, He Liu, Xiaoliang Dong, Haizhi Tian, Huimin Zou, Bengt Samuelsson, Olof Rådmark, Jia Sun   +12 more
wiley   +1 more source

Outer planets probe testing [PDF]

An atmospheric entry Probe is being developed by NASA Ames Research Center (ARC) to conduct in situ scientific investigations of the outer planets' atmospheres.
Edwards, T. M., Grote, M. G., Smittkamp, J. A.   +2 more
core   +1 more source