Results 51 to 60 of about 399,584 (308)

Effects of Direct Torque Control Switching Strategies on Common Voltage and Bearing Current [PDF]

Journal of Intelligent Procedures in Electrical Technology, 2012
Bearing current sininduction motorsare considered a sone of the most damaging factors. Induced shaft voltage through the parasitic capacitors cause this type of current.
Mohammad Taghi Sadeghzadeh, Gholam Reza Arab, Amir Hossein Mirzaian, Seyed Mohammad Madani   +3 more
doaj  

The VMD Method in Diagnosis of Stator Fault and Stator Current Signal

Journal of Harbin University of Science and Technology, 2020
In order to judge the fault state of rolling bearing better, in this paper, the main fault mechanism and characteristics of the bearing are analyzed by using the stator current analysis method.
SHI Xian jiang, LI Wan tao, GAO Qing kang   +2 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

Bidirectional Current WP and CBAR Neural Network Model-Based Bearing Fault Diagnosis

IEEE Access, 2023
In the era of artificial intelligence, the development of an efficient bearing, fault diagnosis method is of vital importance to ensure smooth production operations and avoid major economic losses.
Jianguang Zhu, Tang Liu
doaj   +1 more source

An Application to Transient Current Signal based Induction Motor Fault Diagnosis of Fourier-Bessel Expansion and Simplified Fuzzy ARTMAP [PDF]

, 2013
The start-up transient signals have been widely used for fault diagnosis of induction motor because they can reveal early defects in the development process, which are not easily detected with the signals in the steady state operation. However, transient
Ball, Andrew, Tran, Van Tung, Choi, Byeong Keun, Al Thobiani, Faisal, AlThobiani, Faisal   +4 more
core   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

FEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara, Kinga Skoczek, Elzbieta Pyza, Milena Damulewicz   +3 more
wiley   +1 more source

Comprehensive Review of Bearing Currents in Electrical Machines: Mechanisms, Impacts, and Mitigation Techniques

Energies
The present paper deals with a review on bearing currents in electrical machines, with major emphasis on mechanisms, impacts, and mitigation strategies.
Tianyi Pei, Hengliang Zhang, Wei Hua, Fengyu Zhang   +3 more
doaj   +1 more source

Enhancing Bearing Fault Diagnosis in Induction Motors: A Novel Approach Leveraging Synchronized Deviation of Instantaneous Frequency of Voltage and Current [PDF]

AUT Journal of Electrical Engineering
Current-based methods for bearing fault diagnosis primarily rely on analyzing the current signal, leading to challenges in detecting fault frequencies due to their low magnitude amid the noise in the current spectrum.
Somaye Nazari, Jamal Moshtagh
doaj   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

Analysis of Traction Motor Bearing Voltage and Bearing Current Considering Whole-train Grounding and Suppression Measures

Chengshi guidao jiaotong yanjiu
Objective Most urban rail transit trains use PWM (pulse width modulation) variable frequency drive system, which often leads to bearing corrosion problems due to the excessive bearing voltage and bearing current during operation.
CHEN Zhi, ZHAO Wenjuan, YANG Xiangyan, CHEN Zhiwen, YANG Shaobing, SONG Kejian   +5 more
doaj   +1 more source