Results 71 to 80 of about 139,154 (302)

New approach based on operational strain modal analysis to identify dynamical properties of the high-speed reciprocating operation mechanism

Journal of Low Frequency Noise, Vibration and Active Control, 2019
A high-speed reciprocating operating mechanism with fast running and frequent stopping produces a certain vibration due to inertia. The inherent vibration of this mechanism becomes a key factor affecting positioning accuracy and time.
Xuchu Jiang, Bin Li, Xinyong Mao, Yili Peng, Songping He   +4 more
doaj   +1 more source

Modal analysis and nonlinear characterization of an airborne power ultrasonic transducer with rectangular plate radiator [PDF]

, 2018
Some industrial processes like particle agglomeration or food dehydration among others can be enhanced by the use of power ultrasonic technologies.
Acosta, V.M., Andrés, R.R., Lucas, M., Riera, E.   +3 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

An approach to operational modal analysis using the expectation maximization algorithm [PDF]

, 2012
This paper presents the Expectation Maximization algorithm (EM) applied to operational modal analysis of structures. The EM algorithm is a general-purpose method for maximum likelihood estimation (MLE) that in this work is used to estimate state space ...
Akaike, Alicioglu, Biernacki, Ching, Dempster, Enrique Alarcón, F. Javier Cara, Hurvich, Jaime Carpio, Jesús Juan, Johnson, Juang, Karlis, Little, Ljung, McLachlan, Newland, Shumway, Shumway, Van Overschee   +19 more
core   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Monitoring historical masonry structures with operational modal analysis : two case studies [PDF]

, 2007
Two monuments in Portugal are being monitoring by the University of Minho: the Clock Tower of Mogadouro and the Church of Jerónimos Monastery, in Lisbon.
Costa, Alfredo Campos, Lourenço, Paulo B., Marques, Leandro, Ramos, Luis F., Roeck, G., Roque, João   +5 more
core   +3 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Operational Modal Analysis of Rotating Machinery [PDF]

Harmonic excitation of structures caused by rotating equipment is a problem faced by many engineers in the field of Operational Modal Analysis (OMA). Several methods to discard the influence of harmonic inputs over systems natural responses has been proposed in the literature and implemented in various software solutions. This paper recalls some of the
Gres, S., Andersen, P., Damkilde, L.
openaire   +3 more sources

Operational Modal Analysis of Damage Gear

International Journal of Innovative Technology and Exploring Engineering, 2020
As natural frequencies and mode shapes are often a key to understanding dynamic characteristics of structural elements, modal analysis provides a viable means to determine these properties. This paper investigates the dynamic characteristics of a healthy and unhealthy condition of a commercially used helical gear using the Frequency Domain ...
Mohammad Aarif Amirza, Muhamad Azhan Anuar*, Ahmad Azlan Mat Isa, Zamri Abdul Rahman   +3 more
openaire   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source