Results 21 to 30 of about 1,312,954 (268)
Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass
Sensors, 2018 In the working process, the load mass of the thrust magnetic bearing has a significant change. If the load mass changes greatly, the original fixed control parameters cannot ensure that the system is in the optimal stable suspension state, and the ...
Lingling Zhang
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X-Ray Properties of Optically Variable Low-mass AGN Candidates
The Astrophysical Journal, 2023 We present an X-ray analysis of 14 nearby ( z < 0.044) active galactic nuclei (AGNs) in low-mass galaxies ( M _* ≲ 5 × 10 ^9 M _⊙ ) selected based on their optical variability.
Alexander Messick +3 more
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Mechanistic Study of a Low Frequency Piezoelectric Motor With Natural Frequency Adjustment Method
IEEE Access, 2023 A variable frequency piezoelectric motor is studied, which can generate rotational motion under the excitation of variable-mode vibration response units.
Xiaotao Li +5 more
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6-year periodicity and variable synchronicity in a mass-flowering plant. [PDF]
PLoS ONE, 2011 Periodical organisms, such as bamboos and periodical cicadas, are very famous for their synchronous reproduction. In bamboos and other periodical plants, the synchronicity of mass-flowering and withering has been often reported indicating these species ...
Satoshi Kakishima +3 more
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Structural characteristics and variable mass permeability of fall column broken rock mass [PDF]
Archives of Civil EngineeringIn order to analyze the relationship between the configuration characteristics, variable mass permeability characteristics and the catastrophe mechanism of falling column process, The influence of the permeability was studied by diffraction instrument ...
Jie Suo, Qirong Qin, Zhenhua Li
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Mathematics, 2022 In the present study, the interaction of variable fluid properties with electrokinetically regulated peristaltic transportation of a reactive nanofluid embedded in a porous space is studied.
Yasir Akbar +2 more
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Newton’s Second Law of a particle with variable mass [PDF]
Revista Brasileira de Ensino de FísicaWe approach the question of the movement of a particle with variable mass observed from an inertial frame. We consider two different situations: (i) a particle whose intrinsic mass value varies over time; (ii) the center of mass (CM) of a set of ...
M.T. Thomaz
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AxiomsWe consider the translational–rotational motion of a small axisymmetric body in the gravitational field of two stars of variable masses moving under the influence of their mutual gravitational attraction.
Alexander Prokopenya +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Combined oral contraceptive (COC) use in obese adult women dramatically increases the relative risk of developing a pulmonary embolism (PE). The risk of a PE in obese adolescent females taking contraceptives is currently unknown. The purpose of this investigation was to determine the effect of body mass index (BMI) and contraceptive
John Puetz, Joanne Salas
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Central nervous system (CNS) neuroblastoma, FOXR2‐activated, is a recently recognized entity in the WHO CNS5 classification, defined by activation of the FOXR2 transcription factor and unique histopathological features. This review synthesizes available literature and pooled clinical data, providing insight into demographics ...
Sudarshawn Damodharan +1 more
wiley +1 more source