Results 51 to 60 of about 32,011 (293)

Active Control of an Axial Flow Compressor via Pulsed Air Injection [PDF]

, 1996
This paper presents the use of pulsed air injection to control the onset of rotating stall in a low-speed, axial flow compressor. By measuring the unsteady pressures near the rotor face, a control algorithm determines the magnitude and phase of the
Behnken, Robert L., D'Andrea, Raffaello, Murray, Richard M.   +2 more
core   +1 more source

Unified Treatment of Flow Instabilities of Turbomachines [PDF]

, 2001
The relationship among four flow instabilities of turbomachines, namely, surge, rotating stall, cavitation surge, and rotating cavitation, is elucidated, using a unified or common model for their analysis. The simplest unifying model was employed in the
Brennen, Christopher E., Kamijo, Kenjiro, Tsujimoto, Yoshinobu   +2 more
core   +1 more source

EIF5A Couples Translational Control With Transcriptional Reprogramming Through Chromocenter Reorganization During Spermiogenesis

Advanced Science, EarlyView.
The translation factor Eukaryotic translation initiation factor 5A (eIF5A) is essential for male fertility in mice. It supports the translation of proteins crucial for heterochromatin organization and acrosome formation. eIF5A deficiency disrupts chromocenter integrity, increases chromatin accessibility, and causes transcriptional dysregulation ...
Yuling Cai, Tongtong Li, Qian Fang, Ziyou Bao, Feng Kong, Huitao Qi, Hanzhen Li, Mingyu Zhang, Wei Wang, Yongxia Guan, Wenbo Liu, Xiangfeng Chen, Zi‐Jiang Chen, Xiaohua Jiang, Xin Wang, Hongbin Liu   +15 more
wiley   +1 more source

Farmers’ Protests in Germany: Media Coverage and Types of Bias

Agribusiness, EarlyView.
ABSTRACT The German farmers’ protests of 2024 sparked widespread media coverage and public debate. Yet, media coverage was not always positive, reflecting the media's attention‐seeking and selective focus. Occurrences of farmers blocking media outlets reflected distrust in how their concerns were portrayed.
Felix Schlichte, Doris Läpple
wiley   +1 more source

Minimum and Maximum Limit to Number of Myosin II Motors Participating in an Ensemble Motility [PDF]

, 2002
Extensive research on centrifugal compressors has been planned to define diffuser stall limits for a group of stages characterized by low blade-outlet-width-to-impeller-radius-ratio.
Elangovan, Ravikrishnan, Hamnaf, Shabeel, Nath, Sunil, Pandey, Vikas, Rastogi, Khushboo   +4 more
core   +1 more source

A Robotic Urinary Bladder Enabling Volume Monitoring and Assisted Micturition

Advanced Intelligent Systems, EarlyView.
An implantable robotic bladder is presented that can store urine in an origami‐designed enclosure. An inductance sensing principle can monitor and transfer the urine volume in real‐time. It can actively expand based on the amount of urine collected from kidneys and apply on‐demand mechanical compression to assist urination.
Izadyar Tamadon, Michele Ibrahimi, Federica Semproni, Veronica Iacovacci, Arianna Menciassi   +4 more
wiley   +1 more source

Rotating Stall Inception Prediction Using an Eigenvalue-Based Global Instability Analysis Method

International Journal of Turbomachinery, Propulsion and Power
The accurate prediction of rotating stall inception is critical for determining the stable operating regime of a compressor. Among the two widely accepted pathways to stall, namely, modal and spike, the former is plausibly believed to originate from a ...
Shenren Xu, Caijia Yuan, Chen He, Dongming Cao, Dakun Sun, Carlos Martel, Huihao Chen, Dingxi Wang   +7 more
doaj   +1 more source

Unsteady Pressure Pulsation and Rotating Stall Characteristics in a Centrifugal Pump with Slope Volute

Advances in Mechanical Engineering, 2014
Unsteady flow structures can lead to severe vibration in centrifugal pump if the eigenfrequency of the rotor is equal to excitation frequency. In order to reduce rotor-stator interaction in centrifugal pump, a special slope volute was proposed.
Ning Zhang, Minguan Yang, Bo Gao, Zhong Li, Dan Ni   +4 more
doaj   +1 more source

A stall‐delay model for rotating blades [PDF]

PAMM, 2007
AbstractThe paper is aimed at describing a fundamental phenomenon: the effect of rotation on the inboard blade boundary layer on a wind turbine. The three‐dimensional incompressible steady momentum integral boundary‐layer equations are used to predict the boundary‐layer growth and limiting streamline angles on the blade surface for both attached and ...
Horia Dumitrescu, Vladimir Cardos
openaire   +1 more source

Multimodal Locomotion of Soft Robots

Advanced Intelligent Systems, EarlyView.
This review comprehensively surveys recent advances in multimodal locomotion within soft robotics. Typical locomotion modes are summarized and categorized. Furthermore, the underlying mechanisms enabling multimodal locomotion are discussed and classified into three primary categories: active control‐based, reconfiguration‐based, and environment ...
Zihao Yuan, Huangwei Ji, Kai Huang, Feifei Chen, Guoying Gu   +4 more
wiley   +1 more source