scholarly journals Transdermal Delivery of Enfuvirtide in a Porcine Model Using a Low-Frequency, Low-Power Ultrasound Transducer Patch

2019 ◽  
Vol 45 (2) ◽  
pp. 513-525 ◽  
Author(s):  
Kevin A. Snook ◽  
Robert Van Ess ◽  
Jacob R. Werner ◽  
Ryan S. Clement ◽  
Olga M. Ocon-Grove ◽  
...  
Keyword(s):  
Low Power ◽  
Transdermal Delivery ◽  
Porcine Model ◽  
Low Frequency ◽  
Ultrasound Transducer ◽  
Power Ultrasound

The Application of Low-Frequency and Low-Power Ultrasound Algae Removal Technology in Pengxi River in Three Gorges Area

2011 ◽  
Vol 295-297 ◽  
pp. 1852-1855
Author(s):  
Zhi Zhang ◽  
Jing Ming Han ◽  
Ming Kai Cai ◽  
Gong Duan Fan ◽  
Jing Luo ◽  
...  
Keyword(s):  
Low Power ◽  
Low Frequency ◽  
Three Gorges ◽  
Optimal Frequency ◽  
Power Ultrasound ◽  
Three Gorges Area ◽  
First Order ◽  
Algae Removal ◽  
Ultrasonic Time ◽  
Removal Technology

Three ultrasonic transmitters of single power of 50W, frequency of 20~50 kHz,60~100 kHz and 100~150 kHz were used to remove bloom algae of Pengxi River in Three Gorges Area. The results show that algae are removed in some certain degree by 5 min’s irradiation of low-frequency and low-power ultrasound, the process follows the first order reaction, and the rate constant is 0.0384 min-1. In this study, the optimal ultrasonic time is 5 min, the removal of algae density and Chlorophyll-a are about 15% and 7%, the optimal frequency are 20~50 kHz and 100~150 kHz respectively.

Design Optimization of Low Power and Low Frequency Vibration Based MEMS Energy Harvester

2013 ◽  
Vol 475-476 ◽  
pp. 1624-1628
Author(s):  
Hasnizah Aris ◽  
David Fitrio ◽  
Jack Singh
Keyword(s):  
Low Power ◽  
Energy Harvester ◽  
Piezoelectric Materials ◽  
Geometry Optimization ◽  
Low Frequency ◽  
Substrate Thickness ◽  
Power Harvesting ◽  
Low Frequency Vibration ◽  
Length Width ◽  
Development And Utilization

The development and utilization of different structural materials, optimization of the cantilever geometry and power harvesting circuit are the most commonly methods used to increase the power density of MEMS energy harvester. This paper discusses the cantilever geometry optimization process of low power and low frequency of bimorph MEMS energy harvester. Three piezoelectric materials, ZnO, AlN and PZT are deposited on top and bottom of the cantilever Si substrate. This study focuses on the optimization of the cantilevers length, width, substrate thickness and PZe thickness in order to achieve lower than 600 Hz of resonant frequency. The harvested power for this work is in the range of 0.02 ~ 194.49 nW.

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