Pulser
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Sistema multicanal de geração e recepção de ondas ultra-sonicas para transdutor matricial linear / Multichannel system for generation and detection of ultrasonic waves with a linear array transducer
Ultrasound in medicine has gone through great evolution in the last few decades and has occupied important position as a tool for therapy and diagnosis. This is due to the ultrasound equipment be of relatively low-cost, ultrasound is a non-ionizing radiation, is a non-invasive imaging method, and the images are created and seen in real time. It is common the
Publicado em: 2006
-
2. Design, development and implementation of a solid-state pulse modulator for high-power pulse transmitters / Projeto, desenvolvimento e construção de um modulador de pulso estado-solido para transmissores pulsados de alta potencia
This work describes the development of a modular line-type solid-state pulse modulator topology to be applied in magnetron pulsed power radar transmitters, commonly found on tracking, weather and air traffic management radars. This research includes the design, development and assembling of a pulsed modulator for the Barreira do Inferno Launching Center (CLB
Publicado em: 2005
-
3. Pulsed power modulators for surface treatment by plasma immersion ion implantation
The treatment of surfaces by plasma immersion ion implantation requires pulsed power modulators to provide negative high voltage pulses. To achieve this requirement, we have developed three basic circuit configurations in our laboratory: pulse forming network (PFN), hard-tube pulser (HT) and Blumlein line. In this paper we discuss these three types of circui
Brazilian Journal of Physics. Publicado em: 2004-12
-
4. Construção e caracterização de um canhão de eletrons de alta corrente
: In order to meet the intense pulsed beam requirements of the electron linear accelerator at the Instituto de Estudos Avançados, a high current oxide planar cathode Pierce-type geometry electron gun has been developed. This work presents the steps of the gun design and construction including computational simulations of the gun electrode geometry and mecha
Publicado em: 1998
-
5. The Preparation of Primary Hematopoietic Cell Cultures From Murine Bone Marrow for Electroporation
It is becoming increasingly apparent that electroporation is the most effective way to introduce plasmid DNA or siRNA into primary cells. The Gene Pulser MXcell electroporation system and Gene Pulser electroporation buffer were specifically developed to transfect nucleic acids into mammalian cells and difficult-to-transfect cells, such as primary and stem
MyJove Corporation.
-
6. Development of a dual-modal tissue diagnostic system combining time-resolved fluorescence spectroscopy and ultrasonic backscatter microscopy
We report a tissue diagnostic system which combines two complementary techniques of time-resolved laser-induced fluorescence spectroscopy (TR-LIFS) and ultrasonic backscatter microscopy (UBM). TR-LIFS evaluates the biochemical composition of tissue, while UBM provides tissue microanatomy and enables localization of the region of diagnostic interest. The TR-L
American Institute of Physics.
-
7. Improved electroporation efficiency of intact Lactococcus lactis subsp. lactis cells grown in defined media.
The impact of growth conditions on electroporation of Lactococcus lactis subsp. lactis LM0230 (previously designated Streptococcus lactis LM0230) was evaluated. Cells grown in M17 broth supplemented with 0.5% glucose (M17-Glu) and two chemically defined synthetic media, FMC and RPMI 1640, all supplemented with 0.24% DL-threonine or 0.5% glycine, were harvest