Results 11 to 20 of about 957 (289)

“Pipe organ” air-coupled broad bandwidth transducer [PDF]

2017 IEEE International Ultrasonics Symposium (IUS), 2017
Air-coupled transducers are used to conduct fast non-contact inspections in NDT. Normally, the bandwidth of a conventional transducer can be enhanced, but with a cost to its sensitivity. However, low sensitivity is very disadvantageous in air-coupled devices. This paper presents a methodology for improving the bandwidth of an air-coupled micro-machined
Zhu, Botong, Tiller, B., Windmill, James, Mulholland, Anthony, Walker, A.J.   +4 more
openaire   +1 more source

Evaluation of the effects of a load shedding at a lignite power plant

Energy Science & Engineering, 2021
The load‐shedding scenario describes an unscheduled load reduction in a power plant so that it produces only the electricity that is needed by the plant itself. The reason for such a scenario is a collapse of power supply in the transmission network.
Jens H. Prause, Jan Koltermann, Sebastian Meinke, Dorian Holtz, Egon Hassel   +4 more
doaj   +1 more source

High-temperature ultrasonic thickness monitoring for pipe thinning in a flow-accelerated corrosion proof test facility

Nuclear Engineering and Technology, 2017
In order to monitor the pipe thinning caused by flow-accelerated corrosion (FAC) that occurs in coolant piping systems, a shear horizontal ultrasonic pitch-catch waveguide technique was developed for accurate pipe wall thickness monitoring.
Yong-Moo Cheong, Kyung-Mo Kim, Dong-Jin Kim   +2 more
doaj   +1 more source

Hurricane Sandy and engineered response created habitat for a threatened shorebird

Ecosphere, 2019
The intensity of Atlantic Ocean hurricanes is predicted to increase, and although disturbance is recognized as a fundamental driver of ecological processes, the benefits of hurricanes to ecological systems are seldom acknowledged.
Katie M. Walker, James D. Fraser, Daniel H. Catlin, Shannon J. Ritter, Samantha G. Robinson, Henrietta A. Bellman, Audrey DeRose‐Wilson, Sarah M. Karpanty, Steven T. Papa   +8 more
doaj   +1 more source

Experimental Investigation on the Acoustic Scattering Matrix for a Centrifugal Pump

Proceedings, 2018
Fluid-dynamic noise in centrifugal pumps as a significant sound source in piping systems has gained high attention due to the requirements of vibration and noise reduction in many fields. The acoustic characteristics of the fluid-dynamic noise from pumps
Guidong Li, Jorge Parrondo, Yang Wang
doaj   +1 more source

Robust decentralized model predictive control approach for a multi-compressor system surge instability including piping acoustic

Cogent Engineering, 2018
One of the major problems in modern gas compressing stations is related to surge control of compression system with multi-compressor. Due to the coupled system dynamics, standard controllers can interfere with each unit′s performance.
Hashem Imani, Mohammad Reza Jahed-Motlagh, Karim Salahshoor, Amin Ramezani, Ali Moarefianpur   +4 more
doaj   +1 more source

Investigations of the Formation Mechanism and Pressure Pulsation Characteristics of Pipeline Gas-Liquid Slug Flows

Journal of Marine Science and Engineering
The pipeline system is widely used in marine engineering, and the formation mechanism and flow patterns of two-phase slug flows are of great significance for the optimal design of and vibration prevention in a complex pipeline system. Aiming at the above
Gaoan Zheng, Pu Xu, Lin Li, Xinghua Fan
doaj   +1 more source

Study on the fiber fouling in drying exhaust heat utilization of wood industry

E3S Web of Conferences, 2018
Based on the viscoelastic and creep deformation properties, a new deposition mechanism model for slender wood fiber particles in wast heat utilization is proposed in this paper.
Pan Yadi, Shan Shuya, Wei Yao, Ji Feng, Weng Jinping, Tian Yulan, Qian Jin   +6 more
doaj   +1 more source

Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer

Molecular Oncology, EarlyView.
PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta, Yang Song, Madeleine Ndahayo, Anirudh Saxena, Theresa Guo, Dylan Z. Kelley, Jessica Gore, Andrew Hennigan, Alexa Anderson, John C. Papadimitriou, Daria A. Gaykalova   +10 more
wiley   +1 more source

Overexpression of CDT1 inhibits cell cycle progression at S phase by interacting with the mini‐chromosome maintenance complex and causes DNA damage

FEBS Open Bio, EarlyView.
CDT1 is an essential protein for DNA replication licensing that loads the MCM complex, the eukaryotic replicative DNA helicase, onto replication origins. Overexpression of CDT1 induces cell cycle arrest at the S phase. Here we showed CDT1 inhibits the progression of replication forks by interacting with the MCM complex, leading to the stalling and ...
Takashi Tsuyama, Nonoka Takayama, Rina Tanaka, Yuuki Arai, Yohko Yamaguchi, Yuko Nawata, Yutaro Azuma, Shusuke Tada   +7 more
wiley   +1 more source