Results 171 to 180 of about 121,274 (339)

Doppler Effects: Normal Doppler Frequency Shift in Negative Refractive‐Index Systems (Laser Photonics Rev. 13(12)/2019) [PDF]

, 2019
Lin Xiao, Baile Zhang
openalex   +1 more source

Comparison of the SMI Technique and CEUS for the Assessment of Microvasculature in Leiomyosarcoma and Its Clinical Value for Application

Journal of Clinical Ultrasound, EarlyView.
SMI and CEUS can clearly reflect the microvascular situation in fibroids and effectively guide the clinical treatment of patients with uterine fibroids, but the effect of SMI is better than that of CEUS in guiding the treatment of patients, which can provide a reference for the selection of clinical treatment programs.
Qiufeng Li, Junbin Du
wiley   +1 more source

GNSS Spoofing Detection via Self-Consistent Verification of Receiver's Clock State. [PDF]

Sensors (Basel)
Chen Y, Jiang Y, Wen C, Liu Y, Wang L, He X, Jiang Y, Peng X, Liu X, Yang R, Yi J.   +10 more
europepmc   +1 more source

The Doppler Frequency Shift Formula Derived by Directly Differentiating the Wave Speed Formula

Tao Yu
openalex   +1 more source

EFFECT OF PHASE INSTABILITY OF GENERATORS ON THE OPERATING PARAMETERS OF A CARRIER FREQUENCY SYNCHRONIZATION SYSTEM AGAINST A BACKGROUND OF ADDITIVE GAUSSIAN NOISE AND A DOPPLER FREQUENCY SHIFT

, 2020
Oleksandr Turovsky, L.A. Kirpach
openalex   +1 more source

Application of Multimodal Ultrasound Combined With BI‐RADS in Classification and Diagnosis of Non‐Mass Breast Lesions

Journal of Clinical Ultrasound, EarlyView.
This study demonstrates that integrating microvascular flow imaging, shear wave elastography, and contrast‐enhanced ultrasound with the BI‐RADS classification significantly improves the diagnostic accuracy for non‐mass breast lesions, offering a more reliable tool for differentiating benign from malignant findings.
Zengdi Yang, Yongyan Lyu, Yanting Yang, Cuiping Xu, Keke Zhang, Xuxu Yang, Feng Chen, Lanlan Cheng, Minglei Ren   +8 more
wiley   +1 more source

Doppler Lidar Based on Mode-Locked Semiconductor Lasers. [PDF]

Micromachines (Basel)
Chen Y, Zhou M, Ma W, Sun Z, Shi Y, Zou H, Zhang Y.   +6 more
europepmc   +1 more source

A Microwave Photonic Radio Frequency Memory with Tunable Delay Resolution and Doppler Frequency Shift

Zijian Hu, Zeping Zhao, Hanyu Wang, Xiying Dang, Man Chen, Weijie Zhang, Jianguo Liu   +6 more
openalex   +1 more source

Clutter Suppression with Doppler Frequency Shifted Least Mean Square Filtering in LEO Satellite-Based Passive Radar [PDF]

Xin Guan, Zhongqiu Xu, Xinyi Tang, Guangzuo Li, Xueming Song   +4 more
openalex   +1 more source

High‐Frequency Ultrasonographic Characterization of Subcutaneous Glomus Tumors

Journal of Clinical Ultrasound, EarlyView.
Color Doppler image reveals intralesional hypervascularity. ABSTRACT Objective To evaluate the clinical manifestations and ultrasonographic characteristics of glomus tumors under the nails and other subcutaneous soft tissues. Methods A retrospective analysis was performed on 45 patients with pathologically confirmed glomus tumors who underwent ...
Mingyu Bai, Nan Wang, Jie Jiang
wiley   +1 more source