Results 151 to 160 of about 37,425 (308)

The Novel Nonlinear Adaptive Doppler Shift Estimation Technique and the Coherent Doppler Lidar System Validation Lidar

open access: yes, 2006
The signal processing aspect of a 2-m wavelength coherent Doppler lidar system under development at NASA Langley Research Center in Virginia is investigated in this paper.
Beyon, Jeffrey Y., Koch, Grady J.
core  

Efficacy and related factors of levonorgestrel‐releasing intrauterine system combined with metformin in fertility‐preserving treatment for atypical endometrial hyperplasia and early endometrial cancer: A retrospective cohort study

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective To compare the efficacy of the levonorgestrel‐releasing intrauterine system combined with metformin versus oral progestin combined with metformin in fertility‐preserving treatment for patients with atypical endometrial hyperplasia and early endometrial cancer, and to analyze related factors affecting efficacy.
Pengpeng Gu   +5 more
wiley   +1 more source

Doppler Shift Based Low Earth Orbit Satellite Terminal Positioning Technology

open access: yes天地一体化信息网络
The integration of communication, navigation and remote sensing is the evolutinary direction for future low earth orbit (LEO) satellite Internet to achieve ubiquitous integrated space-based information service.
WEI Fan   +3 more
doaj  

c‐Met‐Targeted Imaging Agents: Progress and Challenges

open access: yesiRADIOLOGY, EarlyView.
This review summarizes recent advances in c‐Met‐targeted imaging probes, including hepatocyte growth factor (HGF) ligands, antibodies, peptides, and small molecules across magnetic resonance imaging (MRI), positron emission tomography (PET), single‐photon emission computed tomography (SPECT), and optical imaging modalities.
Yonghao Li   +4 more
wiley   +1 more source

Response to a behavioural treatment, biofeedback, in constipated patients is associated with improved gut transit and autonomic innervation

open access: yes, 2001
Background: Although behavioural treatment (biofeedback) successfully treats the pelvic floor abnormalities in patients with idiopathic constipation, many patients also normalise their impaired bowel frequency.
Emmanuel, A.V., Kamm, M.A.
core  

Study of Risk Factors and Image Findings of Isolated Abdominal Incidentally Detected Aortic Dissection

open access: yesJournal of Clinical Ultrasound, Volume 53, Issue 3, Page 429-435, March/April 2025.
We detect the risk factors and image characteristics of incidentally detected IAAD. Independent risk factors of IAAD included fatty liver and smoking. In the ultrasound findings of IAAD, an intimal flap was frequently observed. In the CT scan, displacement of intimal calcifications was frequently observed. For suspected IAAD, the abdominal aorta should
Hiromasa Tsubouchi   +15 more
wiley   +1 more source

Maximum Doppler Shift Identification Using Decision Feedback Channel Estimation

open access: yes
This paper introduces a new method for estimating the maximum Doppler shift using decision feedback channel estimation (DFCE). In highly mobile environments, which are expected to be covered beyond 5G and 6G systems, the relative movement between the ...
Hiroya Hayakawa   +5 more
core   +1 more source

High‐Frequency Ultrasonographic Characterization of Subcutaneous Glomus Tumors

open access: yesJournal 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

Doppler shift

open access: yes, 2013
Ayush Goel   +2 more
openaire   +1 more source

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