Results 31 to 40 of about 115,986 (227)

The Content of Phenolic Compounds in Lichens in the Tectonic Fault Zones

Lesnoy Zhurnal (Forestry Journal), 2022
The paper studies the influence of geoecological factors on the content of phenolic compounds (PCs) in lichens of the genus Cladonia in the Velsko-Ustyansky and Kholmogorsky tectonic knots (TKs). Lichens were sampled from the test plots (TPs) laid out in the center of the knots and outside the knots (control).
Irina A. Palamarchuk, Marina E. Belousova, Olga S. Brovko, Vadim V. Staritsyn, Artem D. Ivakhnov, Anatoliy A. Sloboda   +5 more
openaire   +1 more source

Research on gearbox compound fault diagnosis method and system development based on entire gearbox health maintenance

Advances in Mechanical Engineering, 2023
In general, gearbox is prone to occur compound fault due to its harsh working environment and its fault vibration signal contains multi-components which correspond to each gearbox parts.
Lu Yan, Chen Qin-Xiao, Zhong Cheng, Tao Xian, Zhang Wei, Yuan Chi   +5 more
doaj   +1 more source

Research on the Sparse Representation for Gearbox Compound Fault Features Using Wavelet Bases

Shock and Vibration, 2015
The research on gearbox fault diagnosis has been gaining increasing attention in recent years, especially on single fault diagnosis. In engineering practices, there is always more than one fault in the gearbox, which is demonstrated as compound fault ...
Chunyan Luo, Changqing Shen, Wei Fan, Gaigai Cai, Weiguo Huang, Zhongkui Zhu   +5 more
doaj   +1 more source

Compound Fault Diagnosis of a Wind Turbine Gearbox Based on MOMEDA and Parallel Parameter Optimized Resonant Sparse Decomposition

Sensors, 2022
Wind turbines usually operate in harsh environments. The gearbox, the key component of the transmission chain in wind turbines, can easily be affected by multiple factors during the operation process and develop compound faults. Different types of faults
Yang Feng, Xiangfeng Zhang, Hong Jiang, Jun Li   +3 more
doaj   +1 more source

Gearbox Compound Fault Diagnosis in Edge-IoT Based on Legendre Multiwavelet Transform and Convolutional Neural Network

Sensors, 2023
The application of edge computing combined with the Internet of Things (edge-IoT) has been rapidly developed. It is of great significance to develop a lightweight network for gearbox compound fault diagnosis in the edge-IoT context.
Xiaoyang Zheng, Lei Chen, Chengbo Yu, Zijian Lei, Zhixia Feng, Zhengyuan Wei   +5 more
doaj   +1 more source

A New Iron Pnictide Oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and a New Phase in Fe-As-Ca-Mg-Ti-O system

, 2012
A new layered iron arsenide oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and its structural derivative were found in the Fe-As-Ca-Mg-Ti-O system. The crystal structure of (Fe2As2)(Ca5(Mg,Ti)4Oy) is identical to that of (Fe2As2)(Ca5(Sc,Ti)4Oy), which was reported in our
A. Iyo, C.H. Lee, Chen, Deng, Guo, H. Eisaki, H. Kito, Hsu, K. Kihou, Kamihara, Kamihara, Kito, Lee, Miyazawa, Ogino, Ogino, Ogino, P.M. Shirage, Rotter, Shannon, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Shirage, Tapp, Tegel, Zhu, Zhu   +36 more
core   +1 more source

Local Moment Instability of Os in Honeycomb Li2.15Os0.85O3. [PDF]

, 2018
Compounds with honeycomb structures occupied by strong spin orbit coupled (SOC) moments are considered to be candidate Kitaev quantum spin liquids. Here we present the first example of Os on a honeycomb structure, Li2.15(3)Os0.85(3)O3 (C2/c, a = 5.09 Å ...
Dessau, DS, Haskel, D, LaBarre, PG, Li, Jun, Pi, S-T, Pickett, WE, Ramirez, AP, Subramanian, MA, Wallace, MK   +8 more
core   +2 more sources

Multilevel Clustering Fault Model for IC Manufacture

, 2003
A hierarchical approach to the construction of compound distributions for process-induced faults in IC manufacture is proposed. Within this framework, the negative binomial distribution is treated as level-1 models.
Bogdanov, Yu. I., Bogdanova, N. A., Rudnev, A. V.   +2 more
core   +1 more source

The Fate (Outcome) of Clinically Apparent Single Lesion and Oligofocal Nephroblastomatosis Treated According to SIOP/GPOH Protocols for Wilms Tumor

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter, Jens‐Peter Schenk, Jenny Wegert, Manfred Gessler, Leo Kager, Stefan Wagenpfeil, Marina Müller, Jean‐Michel Wolff, Joerg Fuchs, Steven W. Warmann, Clemens‐Magnus Meier, Jochen Hubertus, Christian Rübe, Christian Vokuhl, Patrick Melchior, Lena Tschirner, Norbert Graf, Rhoikos Furtwängler   +17 more
wiley   +1 more source

Compound Fault Diagnosis of Wind Turbine Gearbox via Modified Signal Quality Coefficient and Versatile Residual Shrinkage Network

Sensors
Wind turbine gearbox fault diagnosis is critical to guarantee working efficiency and operational safety. However, the current diagnostic methods face enormous restrictions in handling nonlinear noise signals and intricate compound fault patterns. Herein,
Weixiong Jiang, Guanhui Zhao, Zhan Gao, Yuanhang Wang, Jun Wu   +4 more
doaj   +1 more source