Results 111 to 120 of about 281,646 (345)

The CO2 laser frequency stability measurements [PDF]

Carbon dioxide laser frequency stability data are considered for a receiver design that relates to maximum Doppler frequency and its rate of change. Results show that an adequate margin exists in terms of data acquisition, Doppler tracking, and bit error
Johnson, E. H., Jr.
core   +1 more source

Critical Limitations in Cryogenic Laser Cooling of Solids: Symmetry‐Related Fluorescence Trapping and Condensation‐Induced Parasitic Heating

Advanced Science, EarlyView.
This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong, Jiayi Zhang, Haodong Yang, Lianzhong Deng, Mauro Tonelli, Ercang Luo   +5 more
wiley   +1 more source

A Micro-Doppler Modulation of Spin Projectile on CW Radar

ITM Web of Conferences, 2017
To obtain the spin speed of projectile effectively, a micro-Doppler modulation model of rotating projectile measured by continuous-wave radar (CW radar) is introduced.
Liu Zhi-Xue
doaj   +1 more source

STING Agonist‐Modified Tumor Targeting Photosensitizer Remodels Cancer‐Associated Fibroblasts to Potentiate Photoimmunotherapy in Pancreatic Cancer

Advanced Science, EarlyView.
This carrier‐free, esterase‐responsive nanoaggregate integrates a mitochondria‐targeting photosensitizer with a non‐nucleotide STING agonist to achieve localized photoactivation and immune reprogramming. ICyM2 remodels tumor stroma, induces potent immunogenic cell death, and triggers intratumoral STING activation, collectively revitalizing the ...
Yixuan Zhang, Shankun Yao, Yihan Zhao, Saisai Zhu, Wen Fang, Ranran Yu, Naiwen Shi, Ruixin Zhang, Yin Zhang, Jiawei Liang, Ziying Zhang, Shijin Xu, Ziwei Zhang, Jiajun Zhang, Yukun Li, Xiaoxuan Han, Yuncong Chen, Shu Zhang, Ying Lv   +18 more
wiley   +1 more source

Optical frequency standards for gravitational wave detection using satellite Doppler velocimetry

New Journal of Physics, 2015
Gravitational waves (GWs) imprint apparent Doppler shifts on the frequency of photons propagating between an emitter and detector of light. This forms the basis of a method to detect GWs using Doppler velocimetry between pairs of satellites. Operating in
Amar Vutha
doaj   +1 more source

Real‐Time and High‐Resolution NIR‐II‐L Imaging of Netrin‐1‐Mediated Neurovascular Coupling Driven by Dose‐Dependent Electroacupuncture

Advanced Science, EarlyView.
Disrupted neurovascular coupling contributes to ovarian dysfunction in polycystic ovary syndrome. Using near‑infrared II long‑wavelength imaging, this study visualizes how electroacupuncture dynamically regulates ovarian blood vessels in vivo. Immediate and cumulative stimulation elicit distinct vascular responses via a Netrin‐1 dependent mechanism ...
Yicong Wang, Zi‐Han Chen, Jiajia Li, Wei Hu, Ying Cao, Yu Wang, Xiaoyu Tong, Wenhan Lu, Yuze Yang, Yuehao Wang, Yan Xiao, Wenhao Gao, Yuning Chen, Yuyan Hou, Fan Zhang, Yi Feng   +15 more
wiley   +1 more source

Exploring the Vasculitis‐Tumors Link: Epidemiological Patterns, Mechanistic Insights, and Clinical Implications

Advanced Science, EarlyView.
This review outlines association between vasculitis and malignancies and provides practical value for clinicians in distinguishing primary vasculitis from malignancy‐associated forms and optimizing patient surveillance, improving recognition of tumor‐associated vasculitis to reduce the risk of misdiagnosis, supporting more accurate clinical decision ...
Xiaofei Shi, Zhijiao Li, Xin Ma, Bei Zhang, Xinfeng Wu, Hua Fan, Rongzeng Liu, Hongwei Jiang, Cong‐Qiu Chu   +8 more
wiley   +1 more source

Doppler spread analysis for suppressing channel time variation in high‐mobility massive MIMO V2V communications

IET Communications
Here, fast time‐varying channels of high‐mobility vehicle‐to‐vehicle communications for massive multiple‐input multiple‐output orthogonal frequency division multiplexing systems are considered.
Zeyu Yan, Weile Zhang, Fuqiang Li
doaj   +1 more source

Ultrasonic Doppler measurement of renal artery blood flow [PDF]

Studies were made of (1) blood flow redistribution during lower body negative pressure (LBNP), (2) the profile of blood flow across the mitral annulus of the heart (both perpendicular and parallel to the commissures), (3) testing and evaluation of a ...
Beaver, W. L., Freund, W. R., Meindl, J. D.   +2 more
core   +1 more source

Soft, Flexible, and Stretchable Platforms for Tissue‐Interfaced Bioelectronics

Advanced Science, EarlyView.
Bio‐integrated electronics provide mechanically compliant and stable interfaces with soft biological tissues. Representative applications include neural interfaces, wet‐organadhesive electronics, and skin‐interfaced devices. E represents Young´s modulus and ε represents strain.
Kento Yamagishi, Sunghoon Lee, Tomoyuki Yokota, Takao Someya   +3 more
wiley   +1 more source