نتایج جستجو برای: frequency response analysis fra
تعداد نتایج: 3952772 فیلتر نتایج به سال:
Single carrier time division multiple access (TDMA) and orthogonal frequency division multiple access (OFDMA) are promising for broadband fixed radio access (FRA) in terms of flexibility, bandwidth-efficiency and implementation cost. Coherent detection of QPSK-symbols requires adaptive equalization. We focus on equalizer adaptation in time-variant frequency-selective FRA-channels in the presenc...
In pheochromocytoma (PC12) cells nerve growth factor (NGF) and epidermal growth factor (EGF) activate similar receptor tyrosine kinase signaling pathways but evoke strikingly different biological outcomes: NGF induces differentiation and EGF acts as a mitogen. A novel approach was developed for identifying transcription factor activities associated with NGF-activated, but not EGF-activated, sig...
OBJECTIVE To evaluate whether patients with RA who belong to the spectrum of fibromyalgic RA (FRA) have an impaired response to treatment measured by traditional activity scores. METHODS Patients from the ESPOIR cohort were analysed. This prospective cohort included 813 patients with early arthritis not initially receiving DMARDs. Among the 697 patients who met RA classification criteria, we ...
Frequency response analysis (FRA) is being employed worldwide as one of the main methods for internal condition assessment transformers due to its capability detecting mechanical changes. Nonetheless, objective interpretation FRA measurements still a challenge industry. This mainly attributable lack complete data from same or similar units. A large database can contribute improving classificati...
The AP-1 (activator protein-1) complex, which consists of proteins of the Fos and Jun families, is thought to play an important role in the balance between cell proliferation and apoptosis, the response to genotoxic stress and cell transformation. In cells containing oncogenic Ras, the major components of AP-1 are Fra-1 and c-Jun. Signalling from Ras to AP-1 is through the Raf/MEK[mitogen-activ...
Mitogen-activated protein (MAP) kinase, extracellular-signal-regulated kinases (ERKs) play an important role in activating AP-1-dependent transcription. Studies using the JB6 mouse epidermal model and a transgenic mouse model have established a requirement for AP-1-dependent transcription in tumor promotion. Tumor promoters such as 12-O-tetradecanoylphorbol-13-acetate (TPA) and epidermal growth...
Power transformers are located in the electrical transmission and distribution networks where different voltage levels needed. The turn ratio of low high windings is mechanically controlled by an on-load tap changer or de-energized changer. As transformer’s only moving part, it highly susceptible to mechanical failure aging degradation. While some diagnostic tools have been used determine condi...
Cardiac hypertrophic stimuli induce both adaptive and maladaptive growth response pathways in heart. Here we show that mice lacking junD develop less adaptive hypertrophy in heart after mechanical pressure overload, while cardiomyocyte-specific expression of junD in mice results in spontaneous ventricular dilation and decreased contractility. In contrast, fra-1 conditional knock-out mice have a...
Strawberry fruit contain the allergenic Fra a proteins, members of the pathogenesis-related 10 protein family that causes oral allergic syndrome symptoms. Fra a proteins are involved in the flavonoid biosynthesis pathway, which might be important for color development in fruits. Auxin is an important plant hormone in strawberry fruit that controls fruit fleshiness and ripening. In this study, w...
A frequency response analysis (FRA) is a well-known technique for evaluating the mechanical stability of power transformer’s active part components. FRA’s measuring practices have been industrialised and are codified in IEEE IEC standards. However, because there no valid coding standard, interpretation FRA data still far from being widely acknowledged authoritative approach. This study proposes...
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