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The Biology of Natural Transformation
Annual Review of Microbiology, 1986Natural transformation is widely distributed among bacteria. Its variations, in terms of specific mechanisms, may in part reflect responses to different selective pressures in different bacteria. We have suggested that both gene transfer and acquisition of carbon, nitrogen, and energy represent physiological needs that may have contributed to the ...
G J, Stewart, C A, Carlson
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Nature positive/Design for transformation
2023Abstract: The Track Nature Positive/Design for Transformation started off with a few big questions: Even if we are technologically able to do so, are we still allowed to create our designed environment as we see fit? How can we navigate through sustainable transitions and within planetary boundaries?
Geldermans, Bob +6 more
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Homotopy of Natural Transformations
Canadian Journal of Mathematics, 1970Let C be a full subcategory of T, the category of based topological spaces and based maps, and let Cn be the corresponding category of n-tuples. Let S, T: Tn → T be covariant functors which respect homotopy classes and let u, v: S → T be natural transformations, u and v are homotopic inC, denoted u ≃ v(C), if uX ≃ vX: SX → TX (X ∈ Cn), that is to say ...
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On the Nature of Competence of Transformable Streptococci
Journal of General Microbiology, 1963SUMMARY Transformable streptococci produce an exocellular factor provoking competence under certain conditions. Non-competent cultures become competent upon addition of this factor. The kinetics of conversion is concomitant with an enzymic reaction; the process is time and temperature dependent and the factor itself is heat sensitive. The action of the
R, PAKULA, W, WALCZAK
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Style transformation in natural languages
Frontiers of Computer Science in China, 2008To express semantic knowledge of natural languages accurately and unify the processing of languages, the style transformation of natural languages is discussed in an all-round way. The discussion covers purpose, voice, modal, tense, narrow sense of style, number and case.
Yue Hu 0002 +3 more
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Natural Transformation in Escherichia coli
2019Escherichia coli is well known for its ability to undergo artificial transformation. This bacterium is not generally recognized as naturally transformable. However, several past studies have demonstrated that laboratory and natural strains of E. coli can express modest natural competence under feasible environmental conditions.
Yoko, Komiyama, Sumio, Maeda
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Leonardo, 2018
Interpretations of human, plant and animal forms define the sculptures and drawings of MargotMcMahon. Humans, plants and animals symbolizing lifeforms may be fused into organic interpretations in bronze, ciment Fondu, aluminum, stone or wood. These sculptural symbols, in natural materials, emphasize the importance of interdependent and unique evolved ...
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Interpretations of human, plant and animal forms define the sculptures and drawings of MargotMcMahon. Humans, plants and animals symbolizing lifeforms may be fused into organic interpretations in bronze, ciment Fondu, aluminum, stone or wood. These sculptural symbols, in natural materials, emphasize the importance of interdependent and unique evolved ...
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The Geometric Nature of the Flaschka Transformation
Communications in Mathematical Physics, 2017The authors show that the Flaschka map, originally introduced to analyze the dynamics of the integrable Toda lattice system, is the inverse of a momentum map. They discuss the geometrical setting of the map and apply it to generalized Toda lattice systems on semisimple Lie algebras, the rigid body system on Toda orbits, and to coadjoint orbits of ...
Bloch, Anthony M. +2 more
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Natural Transformation of Oral Streptococci
2010Natural transformation is found in most groups of oral streptococci, including the mitis, the anginosus, and the mutans groups. This ability has been applied as a powerful tool to explore streptococcal gene functions and regulatory pathways, particularly in Streptococcus mutans and Streptococcus gordonii.
Fernanda Cristina, Petersen +1 more
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The natural transformations with fuzzified commutativity
2019 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), 2019The natural transformation forms one of the most abstract mapping that is considered in category theory. In fact, it forms a unique transformation between the so-called functors, which operate between categories. The natural transformations are determined by the appropriate commutativity of their diagrams and their general form may be predicted by the ...
Krystian Adam Jobczyk, Patryk Gaiczynski
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