Results 31 to 40 of about 607,525 (309)

A modified wire-loop snare technique for the retrieval of inferior vena cava filter with embedded hook

SAGE Open Medical Case Reports, 2017
Common obstacles to successful retrieval of retrievable inferior vena cave filter include embedded filter hook and severe tilt of the filter. We described a modified wire-loop snare technique using self-made fishhook-like pigtail catheter and 11-F-long ...
Yuewei Wang, Xiaomei Guan, Haofu Wang
doaj   +1 more source

A Chattering-Free Sliding Mode Filter Enhanced by First Order Derivative Feedforward

IEEE Access, 2020
Noise reduction is one of the important issues for feedback control systems. Toward this problem, this paper proposes a new sliding mode filter, which is an improvement of Lv et al. ’s parabolic sliding mode filter.
Shanhai Jin, Zhengxiang Lv, Xiaogang Xiong, Jingdong Yu   +3 more
doaj   +1 more source

A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter [PDF]

, 2016
Grid connected Voltage Source Converters (VSCs) with LCL filters usually have voltage measurements at the filter capacitors, while it can be important to control the active or reactive power injection at the grid-side of the LCL filter, for instance at a
Candela García, José Ignacio, Luna Alloza, Álvaro, Rocabert Delgado, Joan, Rodríguez Cortés, Pedro, Roslan, Nurul Fazlin, Suul, Jon Are   +5 more
core   +1 more source

Mathematical models and simulations of phase noise in phase-locked loops [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2007
Phase noises in Phase-Locked Loops (PLLs) are a key parameter for communication systems that contribute the bit-rate-error of communication systems and cause synchronization problems.
Sethapong Limkumnerd, Duangrat Eungdamrong   +1 more
doaj  

Design, Simulation and Validation of HMC833 Loop Filter Based on Matlab

MATEC Web of Conferences, 2017
In the light of the complexity of the conventional research and design of HMC833 wideband PLL, this paper studies a design method of HMC833 loop filter based on Simulink modeling in Matlab.
Hu Shachang, Li Tianli, Zhang Jiyue, Yan Li, Zhang Xiaojie   +4 more
doaj   +1 more source

Combining Charge Couple Devices and Rate Sensors for the Feedforward Control System of a Charge Coupled Device Tracking Loop

Sensors, 2016
A rate feed forward control-based sensor fusion is proposed to improve the closed-loop performance for a charge couple device (CCD) tracking loop. The target trajectory is recovered by combining line of sight (LOS) errors from the CCD and the angular ...
Tao Tang, Jing Tian, Daijun Zhong, Chengyu Fu   +3 more
doaj   +1 more source

A Cuckoo Filter Modification Inspired by Bloom Filter [PDF]

AUT Journal of Electrical Engineering, 2019
Probabilistic data structures are so popular in membership queries, network applications, and so on. Bloom Filter and Cuckoo Filter are two popular space efficient models that incorporate in set membership checking part of many important protocols.
Hananeh Sasaniyan Asl, Behzad Mozaffari Tazeh kand, Mir Javad Musevi niya   +2 more
doaj   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

A retrospective two-center study assessing the safety and efficacy of two novel standard inferior vena cava filter retrieval kits

JVS-Vascular Insights
Objective: To evaluate the safety and effectiveness of novel commercially available single-loop and triple-loop inferior vena cava filter retrieval kits for the percutaneous removal of inferior vena cava filters that were no longer medically required ...
Deven Desai, BA, Satya K. Morar, MHM, Manisha R. Naganatanahalli, BA, Akash G. Raju, BA, Milan Patel, MD, Sasan Partovi, MD, Jennifer Montgomery, MD, PhD   +6 more
doaj   +1 more source

Effect of supply scaling on noise performance of 0.6–1.2 V continuous‐time delta‐sigma modulator

Electronics Letters, 2019
The dependence of the noise performance of a 0.6–1.2 V continuous‐time delta‐sigma modulator (DSM) on its supply voltage is analysed. The noise performance and benchmark figure of merit (FoM) mainly depend on the power dissipation, thermal noise ...
C.‐W. Hsu, P.R. Kinget
doaj   +1 more source