Results 41 to 50 of about 535,015 (301)
Exaptation and emergence as mechanisms to cross fitness valleys during evolution: an example using simulated homing behaviour [PDF]
, 2008 Evolution is often considered a gradual hill climbing process, slowly increasing the fitness of organisms. I investigate the evolution of homing behaviour in simulated intertidal limpets.
Richard Stafford
core +1 more source
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Hematopoietic (stem) cells—The elixir of life?
FEBS Letters, EarlyView.The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source
Characteristics of functional tension of qualified skiers when passing rises of different difficulty
Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2015 Purpose: studying of main functional changes in organism of qualified female skiers when passing rises of different difficulty. Materials: 12 female skiers of combined team of Ukraine of 21-34 years’ age were tested. Pedagogic observation included: speed
J.K. Khmelnytska, M.M. Filippov
doaj +1 more source
Physical Education of Students, 2020 Background and Study Aim. The objective of the work is to study the key factors of highly skilled wrestler fitness structure determining the level of their functional state and physical work capacity at the stage of maximum realization of individual ...
Oleksandr Pryimakov +4 more
doaj +1 more source
Evolving more efficient digital circuits by allowing circuit layout evolution and multi-objective fitness [PDF]
, 1999 We use evolutionary search to design combinational logic circuits. The technique is based on evolving the functionality and connectivity of a rectangular array of logic cells whose dimension is defined by the circuit layout.
Kalganova, T, Miller, J
core +1 more source
Information content of colored motifs in complex networks [PDF]
, 2011 We study complex networks in which the nodes of the network are tagged with different colors depending on the functionality of the nodes (colored graphs), using information theory applied to the distribution of motifs in such networks.
Arend Hintze +4 more
core +1 more source
FEBS Letters, EarlyView.Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang +5 more
wiley +1 more source
Aptidão funcional de idosos residentes em uma instituição de longa permanência
Revista Brasileira de Geriatria e GerontologiaOBJETIVO: Avaliar a aptidão funcional e as variáveis antropométricas de idosos independentes e semidependentes residentes em uma Instituição de Longa Permanência para Idosos (ILPI) de Florianópolis/SC.
Patrícia Daura de Souza +4 more
doaj +1 more source
Highly Mutable Linker Regions Regulate HIV-1 Rev Function and Stability. [PDF]
, 2019 HIV-1 Rev is an essential viral regulatory protein that facilitates the nuclear export of intron-containing viral mRNAs. It is organized into structured, functionally well-characterized motifs joined by less understood linker regions.
Fernandes, Jason D +4 more
core +3 more sources