Long-Term and Short-Term Atmospheric Impairments Forecasting for High Throughput Satellite Communication Systems

2018 ◽  
Author(s):  
C. Kourogiorgas ◽  
A.Z. Papafragkakis ◽  
A.D. Panagopoulos ◽  
S. Ventouras
Keyword(s):  
High Throughput ◽  
Communication Systems ◽  
Satellite Communication ◽  
Short Term

scholarly journals High-Throughput Sequencing Reveals the Incomplete, Short-Term Recovery of Infant Gut Microbiota following Parenteral Antibiotic Treatment with Ampicillin and Gentamicin

2012 ◽  
Vol 56 (11) ◽  
pp. 5811-5820 ◽  
Author(s):  
Fiona Fouhy ◽  
Caitriona M. Guinane ◽  
Seamus Hussey ◽  
Rebecca Wall ◽  
C. Anthony Ryan ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Antibiotic Treatment ◽  
High Throughput ◽  
High Throughput Sequencing ◽  
Short Term ◽  
Parenteral Antibiotic ◽  
Content Type ◽  
Combined Use ◽  
Cessation Of Treatment

ABSTRACTThe infant gut microbiota undergoes dramatic changes during the first 2 years of life. The acquisition and development of this population can be influenced by numerous factors, and antibiotic treatment has been suggested as one of the most significant. Despite this, however, there have been relatively few studies which have investigated the short-term recovery of the infant gut microbiota following antibiotic treatment. The aim of this study was to use high-throughput sequencing (employing both 16S rRNA andrpoB-specific primers) and quantitative PCR to compare the gut microbiota of nine infants who underwent parenteral antibiotic treatment with ampicillin and gentamicin (within 48 h of birth), 4 and 8 weeks after the conclusion of treatment, relative to that of nine matched healthy controls. The investigation revealed that the gut microbiota of the antibiotic-treated infants had significantly higher proportions ofProteobacteria(P= 0.0049) and significantly lower proportions ofActinobacteria(P= 0.00001) (and the associated genusBifidobacterium[P= 0.0132]) as well as the genusLactobacillus(P= 0.0182) than the untreated controls 4 weeks after the cessation of treatment. By week 8, theProteobacterialevels remained significantly higher in the treated infants (P= 0.0049), but theActinobacteria,Bifidobacterium, andLactobacilluslevels had recovered and were similar to those in the control samples. Despite this recovery of totalBifidobacteriumnumbers,rpoB-targeted pyrosequencing revealed that the number of differentBifidobacteriumspecies present in the antibiotic-treated infants was reduced. It is thus apparent that the combined use of ampicillin and gentamicin in early life can have significant effects on the evolution of the infant gut microbiota, the long-term health implications of which remain unknown.

Reliability and Degradation Mechanisms in High Power Broad-Area InGaAs-AlGaAs Strained Quantum Well Lasers

2015 ◽  
Vol 1792 ◽  
Author(s):  
Yongkun Sin ◽  
Nathan Presser ◽  
Stephen LaLumondiere ◽  
Miles Brodie ◽  
Zachary Lingley ◽  
...  
Keyword(s):  
Quantum Well ◽  
Communication Systems ◽  
Satellite Communication ◽  
High Reliability ◽  
Single Mode ◽  
Broad Area ◽  
Intensive Investigation ◽  
Strained Quantum Well ◽  
Field Reliability

ABSTRACTReliability and degradation processes in broad-area InGaAs-AlGaAs strained quantum well (QW) lasers are under intensive investigation because these lasers are the key components for fiber lasers and amplifiers that have found both industrial and military applications in recent years. Unlike single-mode lasers that were developed for high reliability telecom applications, broad-area lasers were mainly targeted for applications that require less stringent reliability of the lasers until recently. Especially, the lack of field reliability data is a concern for satellite communication systems where high reliability is required of lasers for long-term duration. For our present study, we addressed this concern by performing long-term life-tests of broad-area InGaAs-AlGaAs strained QW lasers and also by studying mechanisms that are responsible for catastrophic degradation of the lasers.

scholarly journals High Throughput Prediction of the Long-Term Stability of Pharmaceutical Macromolecules from Short-Term Multi-Instrument Spectroscopic Data

2014 ◽  
Vol 103 (3) ◽  
pp. 828-839 ◽  
Author(s):  
Nathaniel R. Maddux ◽  
Vidyashankara Iyer ◽  
Weiqiang Cheng ◽  
Ahmed M.K. Youssef ◽  
Sangeeta B. Joshi ◽  
...  
Keyword(s):  
High Throughput ◽  
Spectroscopic Data ◽  
Short Term ◽  
Term Stability ◽  
Long Term Stability

Conceptual short-term memory (CSTM) supports core claims of Christiansen and Chater

2016 ◽  
Vol 39 ◽  
Author(s):  
Mary C. Potter
Keyword(s):  
Working Memory ◽  
Rapid Serial Visual Presentation ◽  
Language Comprehension ◽  
Short Term Memory ◽  
Visual Presentation ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Use Of Knowledge

AbstractRapid serial visual presentation (RSVP) of words or pictured scenes provides evidence for a large-capacity conceptual short-term memory (CSTM) that momentarily provides rich associated material from long-term memory, permitting rapid chunking (Potter 1993; 2009; 2012). In perception of scenes as well as language comprehension, we make use of knowledge that briefly exceeds the supposed limits of working memory.

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