The E. coli long term evolution experiment
Fixation and Adaptation in the Lenski E. coli Long Term Evolution Experiment
... Lenski E. coli long term evolution experiment is derived with a numerical solution and this solution is used to analyze smaller and larger carrying capacity ...
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Large Chromosomal Rearrangements during a Long Term Evolution Experiment with Escherichia coli
... borders of the rearrangements with single-nucleotide resolu- tion, which is impossible with optical mapping data alone. We also verified the rearrangement borders for two evolved clones from populations Ara⫹1 and Ara⫹2, ...
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Changes in Intrinsic Antibiotic Susceptibility during a Long Term Evolution Experiment with Escherichia coli
... b Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA ABSTRACT High-level resistance often evolves when populations of bacteria are ex- posed to antibiotics, by ...
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Adaptation, Clonal Interference, and Frequency-Dependent Interactions in a Long-Term Evolution Experiment with Escherichia coli
... ABSTRACT Twelve replicate populations of Escherichia coli have been evolving in the laboratory for .25 years and 60,000 gener- ations. We analyzed bacteria from whole-population samples frozen every 500 ...
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Parallel evolution of HIV-1 in a long-term experiment
... parallel evolution in our experiment is likely to be determined by the number of high fitness effect mutations available during adaptation (Orr 2005; Bons et ...
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Long-Term Experimental Evolution in Escherichia coli. VI. Environmental Constraints on Adaptation and Divergence
... In contrast with replicate populations selected in glucose-limited medium, the mean fitness of populations selected in maltose me- dium was similar in both selected [r] ...
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Long-Term Experimental Evolution in Escherichia coli. IV. Targets of Selection and the Specificity of Adaptation
... yet the pathways for degradation of these two nutrients are quite similar (Figure 3). 1983) is quite small, and, for the reasons stated above, these genes are un- likely to have[r] ...
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LTE Long Term Evolution
... is approaching its completion, 3GPP is gradually moving its focus toward the next major step in the evolution of LTE (Release 12). One of the major issues in mobile communications is power saving/management at the ...
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The long-term evolution of 3G
... Downlink: OFDM with frequency-domain adaptation Figure 3 shows the basic structure of the downlink AML-OFDM time/frequency structure. The selected subcarrier spacing of 15kHz allows for operation in a wide range of ...
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Parallel Changes in Global Protein Profiles During Long-Term Experimental Evolution in Escherichia coli
... Manuscript received August 15, 2005 Accepted for publication May 11, 2006 ABSTRACT Twelve populations of Escherichia coli evolved in and adapted to a glucose-limited environment from a common ancestor. We used ...
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Long-Term Experimental Evolution in Escherichia coli. XII. DNA Topology as a Key Target of Selection
... The genetic bases of adaptation are being investigated in 12 populations of Escherichia coli, founded from a common ancestor and serially propagated for 20,000 generations, during which time they achieved ...
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Adaptation of Escherichia coli to Long-Term Serial Passage in Complex Medium: Evidence of Parallel Evolution
... Genomic population dynamics during long-term stationary phase. In order to determine what mutations in each population, and at each passage, may lead to the adaptive phenotypes, we performed whole-genome ...
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E. Wieland. Long-term chemical evolution of wasteforms predicted by geochemical modelling
... chemical evolution of wasteforms by replacing siliceous by calcareous aggregates for fabrication of the cementitious matrix - high pH conditions maintained Geochemical modelling supports the assessment of the ...
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Agilent 3GPP Long Term Evolution:
... At this point, it is reasonable to ask how SC-FDMA can be resistant to multipath when the data symbols are still short. In OFDMA, the modulating data symbols are constant over the 66.7 μs OFDMA symbol period, but an ...
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CYBER SECURITY FOR LONG TERM EVOLUTION
... In the past, communication networks used by public safety agencies were circuit switched and built on proprietary implementations. They were closed systems, a term that means they operated independently and were ...
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LTE - The UMTS Long Term Evolution
... 1.1 The Context for the Long Term Evolution of UMTS 1 1.1.1 Historical Context 1 1.1.2 LTE in the Mobile Radio Landscape 2 1.1.3 The Standardization Process in 3GPP. 5 1.2 Re[r] ...
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Performance of handover in long term evolution
... large error margin, the quality degradation during the dysfunctional S1 handover may be deduced from the results. 5.2 Analysis and Other Studies As no excessively long data pauses were observed in UDP ...
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Long-Term Experimental Evolution in Escherichia coli. IX. Characterization of Insertion Sequence-Mediated Mutations and Rearrangements
... ABSTRACT As part of a long-term evolution experiment, two populations of Escherichia coli B adapted to a glucose minimal medium for 10,000 generations. In both populations, multiple ...
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Effect of temperature and moisture on O2 evolution rate of cultivated Phaeozem: analyses of a long term field experiment
... 2 evolution rate from cultivated clay Phaeozem (Russia, Moscow region; 54°50’N, 37°35’E) were studied under field conditions from November 1997 to October ...2 evolution rate varied widely – from ...
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Metabolic modelling in a dynamic evolutionary framework predicts adaptive diversification of bacteria in a long term evolution experiment
... Focusing evolution on a subset of reactions made computation of the ecological and evolutionary dynamics feasible; even so, the simulations presented here took over 20 days on a dedicated high-performance computer ...
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