High-frequency parametric excitation of electrohydrodynamic instabilities: applications to large-area ion sources

1991 ◽  
Vol 19 (5) ◽  
pp. 860-861 ◽  
Author(s):  
A.L. Pregenzer
Keyword(s):  
Parametric Excitation ◽  
High Frequency ◽  
Ion Sources ◽  
Large Area

scholarly journals High Frequency of OXA-253-Producing Acinetobacter baumannii in Different Hospitals in Recife, Brazil

2016 ◽  
Vol 61 (1) ◽  
Author(s):  
Felipe Lira de Sá Cavalcanti ◽  
Carina Lucena Mendes-Marques ◽  
Crhisllane Rafaele dos Santos Vasconcelos ◽  
Túlio de Lima Campos ◽  
Antonio Mauro Rezende ◽  
...  
Keyword(s):  
Acinetobacter Baumannii ◽  
High Frequency ◽  
Resistance Determinant ◽  
Large Area ◽  
Content Type ◽  
Successful Transmission ◽  
Genetic Environment ◽  
Reported Data ◽  
Sequence Types

ABSTRACT Here, we report the isolation of 31 Acinetobacter baumannii strains producing OXA-253 in a single large Brazilian city. These strains belonged to five different sequence types (STs), including 4 STs not previously associated with bla OXA-253. In all strains, the bla OXA-253 gene was located in a plasmid within a genetic environment similar to what was found previously in Brazil and Italy. The reported data emphasize the successful transmission of the bla OXA-253 gene through a large area and the tendency for this resistance determinant to remain in the A. baumannii population.

Self-consistent electrodynamics of large-area high-frequency capacitive plasma discharge

2010 ◽  
Vol 108 (7) ◽  
pp. 073301 ◽  
Author(s):  
Zhigang Chen ◽  
Shahid Rauf ◽  
Ken Collins
Keyword(s):  
High Frequency ◽  
Plasma Discharge ◽  
Large Area ◽  
Self Consistent

Dispersal and Frequency of Glyphosate-Resistant and Glyphosate-Tolerant Weeds in Soybean-producing Edaphoclimatic Microregions in Brazil

2019 ◽  
Vol 33 (1) ◽  
pp. 217-231 ◽  
Author(s):  
Felipe Ridolfo Lucio ◽  
Augusto Kalsing ◽  
Fernando Storniolo Adegas ◽  
Caio Vitagliano Santi Rossi ◽  
Núbia Maria Correia ◽  
...  
Keyword(s):  
High Frequency ◽  
Production Systems ◽  
Glyphosate Resistance ◽  
Yield Losses ◽  
Large Area ◽  
Soybean Production ◽  
Margin Of Error ◽  
Minimum Number ◽  
Production Area ◽  
The Absolute

AbstractGlyphosate-resistant (GR) and glyphosate-tolerant weeds cause considerable yield losses and represent a growing threat to soybean production systems. Despite the relevance of this topic, few studies have evaluated the dispersal of these species in Brazil. The objective of this study was to evaluate the dispersal and frequency of known GR and glyphosate-tolerant weeds in soybean-producing microregions. A total of 2,481 interviews were conducted in different regions of Brazil. The interviews were stratified among 20 edaphoclimatic microregions (ECRs) to cover all of the country’s soybean-producing regions. A minimum number of interviews was estimated to generate a margin of error of ≤10% within the ECRs and ≤5% in the country. The values of the farmers’ responses were extrapolated to the total soybean production area of each ECR and the country as a whole, and the absolute values of each response were normalized as percentage values. The dispersal and management data demonstrate a loss of efficiency of glyphosate-resistance technology. Species that are naturally tolerant to glyphosate such as goosegrass, Commelina spp., and Ipomoea spp. had a greater presence in the ECRs, as did the resistant biotypes, particularly Conyza spp. and sourgrass, due to the large area cultivated with GR soybean, where glyphosate has been used with high frequency.

Single-Axis Projection Scheme for Conducting Sequential Lateral Solidifica-tion of Si Films for Large-Area Electronics

2001 ◽  
Vol 685 ◽  
Author(s):  
Alexander Limanov ◽  
Vladimir Borisov
Keyword(s):  
Pulse Duration ◽  
High Frequency ◽  
Excimer Lasers ◽  
Melting Line ◽  
Large Area ◽  
Technical Challenge ◽  
Projection Scheme ◽  
Different Types ◽  
Si Films ◽  
Projection Optics

AbstractThis paper deals with some results of research in SLS performed in the excimer laser laboratory of TRINITI research institute, Russia, where different types of excimer lasers have been developed and manufactured. The research used a new simple SLS approach based on single-axis (i.e., cylinder) projection optics. The method employs a long single melting line extended many centimeters in length. The line is formed by projection through a single slit in a bulk metal mask. Some aspects of the efficiency, potential, and technical challenge of the method are discussed. This method is particularly useful with low pulse energy and high frequency excimer lasers, and one of the most efficient ways of providing directionally crystallized Si films over a large area. Several types of excimer lasers were tested for the SLS technique. It was found that among various parameters, pulse duration is a more important one, e.g., an increase in pulse duration from 25 to 150 ns results in enlargement of lateral growth distance by about three times.

Generation of Large Area, Sheet Plasma Mirrors for Redirecting High Frequency Microwave Beams

1996 ◽  
Vol 77 (10) ◽  
pp. 1982-1985 ◽  
Author(s):  
J. Mathew ◽  
R. F. Fernsler ◽  
R. A. Meger ◽  
J. A. Gregor ◽  
D. P. Murphy ◽  
...  
Keyword(s):  
High Frequency ◽  
Large Area ◽  
Sheet Plasma ◽  
High Frequency Microwave ◽  
Microwave Beams
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