Results 51 to 60 of about 5,121 (217)

Indole‐Based π‐Extended Monophosphine Ligands for Enhanced Palladium‐Catalyzed Sonogashira Coupling

Journal of Heterocyclic Chemistry, EarlyView.
A general palladium‐catalyzed Sonogashira cross‐coupling of (hetero)aryl chlorides with aliphatic, (hetero)aryl alkynes is described using Pd(dba)₂/PCy2‐Napdole‐phos catalyst system. The reaction protocol exhibits broad substrate scope and the catalyst loading can be down to 0.2 mol% Pd.
Yu Kiu Lau, Chun Pong Hui, Cheuk Long Li, Ho Chung Chang, Man Ho Tse, Ho Kwan Lou, Iat In Chan, Raymond Wai‐Yin Sun, Pui Ying Choy, Fuk Yee Kwong   +9 more
wiley   +1 more source

Windowed Mean Drift Exponentially Weighted Moving Average Control Chart for Monitoring Complex Autocorrelated Processes

Quality and Reliability Engineering International, EarlyView.
ABSTRACT In modern manufacturing environments, traditional statistical process control (SPC) methods often struggle with complex, dynamic data patterns, particularly when observations are autocorrelated. Control charts are useful tools used in SPC to detect any significant drift in a process.
Jeanette Maria Louw, Jean‐Claude Malela‐Majika, Kayode Samuel Adekeye, Aamir Saghir   +3 more
wiley   +1 more source

Influence of LCL Output Filter Parameter Changing on D-STATCOM Compensation Characteristics

机车电传动, 2015
Aim at the problem of D-STATCOM output containing plenty of switching ripple, LCL filter was designed. Influence of LCL filter parameters on the compensation characteristic of D-STATCOM was studied. Considering the compensation capacity of the D-STATCOM,
ZHANG Xingru
doaj  

UAVs unveil the role of small scale vegetation structure on wader nest survival

Remote Sensing in Ecology and Conservation, EarlyView.
In this study, we combine high‐resolution vegetation structural metrics derived from unmanned aerial vehicle (UAV) imagery with on‐field wader nest survival monitoring. We show that the immediate vegetation height and heterogeneity within a 2‐meter buffer surrounding the clutch of the recorded ground‐nesting wader species positively influenced its ...
Miguel Silva‐Monteiro, Miguel Villoslada, Thaisa Bergamo, Triin Kaasiku, Camilo Carneiro, David Kleijn   +5 more
wiley   +1 more source

A user‐friendly goniometer‐compatible fixed‐target platform for macromolecular crystallography at synchrotrons

Journal of Applied Crystallography, EarlyView.
A user‐friendly fixed‐target platform for serial synchrotron crystallography is described, which allows low‐background X‐ray diffraction data collection, in situ crystallization and transportation of protein microcrystals at room temperature.Fixed‐target platforms provide convenient support for microcrystals during serial X‐ray crystallography studies ...
Swagatha Ghosh, Analia Banacore, Per Norder, Monica Bjelčić, Arpitha Kabbinale, Padmini Nileshwar, Gabrielle Wehlander, Daniele de Sanctis, Shibom Basu, Julien Orlans, Adams Vallejos, Leonard M. G. Chavas, Richard Neutze, Gisela Brändén   +13 more
wiley   +1 more source

Active damping techniques for LCL-filtered inverters-based microgrids [PDF]

2015 IEEE 10th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2015
LCL-type filters are widely used in grid-connected voltage source inverters, since it provides switching ripples reduction with lower cost and weight than the L-type counterpart. However, the inclusion of LCL-filters in voltage source inverters complicates the current control design regarding system stability issues; because an inherent resonance peak ...
Iman Lorzadeh, Mehdi Savaghebi, Hossein Askarian Abyaneh, Josep M. Guerrero   +3 more
openaire   +1 more source

Seed dormancy explains plant response to mass mortality events

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Mass mortality events (MMEs) are large‐scale, rapid die‐offs resulting in extreme inputs of carrion biomass. Recent work demonstrates the effects of increasing carrion biomass on plant communities modulated by vertebrate scavengers and herbivores.
David S. Mason, Abby K. Jones, Brandon T. Barton, Mike Proctor, Stephen L. Webb, Marcus A. Lashley   +5 more
wiley   +1 more source

Differential and Common-Mode Model-Based Controller for a Grid-Tied Three-Phase NPC Converter

IEEE Access
This paper introduces a controller designed for transformerless inverters connected to the grid via an inductor-capacitor-inductor (LCL) output filter. The controller incorporates a virtual ground (VG) connection, providing a straightforward solution to ...
Gerardo Escobar, Jorge L. Lopez-Sarabia, Andres A. Valdez-Fernandez, Edgar D. Silva-Vera, Jesus E. Valdez-Resendiz, Jonathan C. Mayo-Maldonado   +5 more
doaj   +1 more source

Hobbyist preferences for pet freshwater turtles

Conservation Biology, EarlyView.
Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao, Zhan Chen, Beilu Duan, Wuji Zheng, Anita Kar Yan Wan, Xiaoxi Zhang, Lishu Li, Tien Ming Lee   +7 more
wiley   +1 more source

A General Analytical Formulation for LCL Filter Design for Grid-Connected PWM-Driven Cascaded H-Bridge Inverters

IEEE Open Journal of Power Electronics
This paper proposes a general analytical formulation for LCL filter design for grid-connected PWM-driven cascaded H-bridge inverters. The novelty of this work deals with providing some easy-of-use analytical expressions that allow for properly sizing the
Giuseppe Schettino, Giuseppe Sorrentino, Gioacchino Scaglione, Claudio Nevoloso, Antonino Oscar Di Tommaso, Rosario Miceli   +5 more
doaj   +1 more source