نتایج جستجو برای: based tfr methods
تعداد نتایج: 4266827 فیلتر نتایج به سال:
Stockwell transform(ST) time-frequency representation(ST-TFR) is a time frequency analysis method which combines short time Fourier transform with wavelet transform, and ST time frequency filtering(ST-TFF) method which takes advantage of time-frequency localized spectra can separate the signals from Gaussian noise. The ST-TFR and ST-TFF methods are used to analyze the fault signals, which is re...
Abstract The remaining useful life (RUL) estimation of bearings is critical for ensuring the reliability mechanical systems. Owing to rapid development deep learning methods, a multitude data-driven RUL approaches have been proposed recently. However, following problems remain in existing methods: 1) Most network models use raw data or statistical features as input, which renders it difficult e...
To solve the fault diagnosis difficulty of bearings with small data samples, a novel multi-information fusion vision transformer (ViT) model based on time–frequency representation (TFR) maps is proposed in this paper. The original vibration signal decomposed into different scale sub-signals by discrete wavelet transforms (DWTs), and continuous (CWTs) are used to transform these maps, which conc...
seismic attribute is a quantitative measure of an interested seismic characteristic. there are several seismic attributes. in recent years, time-frequency (tf) attributes have been developed which to reach them, tf analyzing of seismic data is required. a high resolution tf representation (tfr) can yield more accurate tf attributes. there are several tfr methods including short-time fourier tra...
BACKGROUND The soluble transferrin receptor (sTfR) is established as a test for iron deficiency (ID). In chronic lymphocytic leukemia (CLL), sTfR is not reliable for screening for ID as the latter is strongly dependent on tumor burden. METHODS We investigated whether the influence of the tumor load can be excluded or minimized using the sTfR/log ferritin ratio (TfR-F-Index) and the C-reactive...
BACKGROUND Transferrin receptor (TfR) is expressed in most lung cancers and is an indicator of poor prognosis in certain groups of patients. In this study, we blocked cell surface TfR to inhibit lung adenocarcinoma (LAC) cell growth in vitro and investigated the associated molecular mechanisms to determine a potential therapeutic target in human LAC. METHODS RNA interference and antibody bloc...
BACKGROUND In the absence of a feasible, noninvasive gold standard, iron deficiency (ID) is best measured by the use of multiple indicators. However, the choice of an appropriate single iron biomarker to replace the multiple-criteria model for screening for ID at the population level continues to be debated. OBJECTIVE We compared ID defined as ≥ 2 of 3 abnormal ferritin (< 12 μg/L), soluble t...
Introduction Early diagnosis of Parkinson’s disease (PD) remains challenging. It has been suggested that abnormal brain iron metabolism leads to excessive accumulation in PD, although the mechanism deposition is not yet fully understood. Ferritin and transferrin receptor (TfR) are involved metabolism, exosome pathway one by which ferritin transported regulated. While blood healthy animals conta...
Anti-transferrin receptor (TfR)-based bispecific antibodies have shown promise for boosting antibody uptake in the brain. Nevertheless, there are limited data on the molecular properties, including affinity required for successful development of TfR-based therapeutics. A complex nonmonotonic relationship exists between affinity of the anti-TfR arm and brain uptake at therapeutically relevant do...
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