Results 131 to 140 of about 706,240 (301)

Formação de conceitos em crianças cegas: questões teóricas e implicações educacionais

open access: yesPsicologia: Teoria e Pesquisa
A formação de conceitos depende da linguagem e do pensamento, que integram informações sensoriais. Postula-se que mudanças no sujeito que conhece e nos objetos e eventos a serem conhecidos sugerem modelos flexíveis de ensino de conceitos.
Cecilia Guarnieri Batista
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Identity cards and political commitment: a study in the formation, operationalisation and measurement of a concept [PDF]

open access: yes, 2012
This thesis presents a new definition of the concept of political commitment. It shows how the concept can be operationalised for empirical research in parliamentary and executive settings, and reports findings from a study to measure the commitment of ...
Denny, R
core  

Effects of stimuli organization on identity matching-to-sample performances of persons with autism / Desempenho de pessoas com autismo em tarefas de emparelhamento com o modelo por identidade: efeitos da organização dos estímulos

open access: yesPsicologia: Reflexão e Crítica, 2008
This study assessed the performance of 20 persons with autism in an identity matching-to-sample task, using two procedures with different stimuli arrangements and different response requirements.
Camila Graciella Santos Gomes   +1 more
doaj  

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Constructive Induction by Incremental Concept Formation [PDF]

open access: yes, 1990
This paper describes a framework that generates constructive induction schemes for the concept formation system COBWEB. The basis of this framework---context-dependent bias of multi-valued properties---provides a way for allowing COBWEB to deal with ...
Yoram Reich
core  

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Phosphoinositides and inositol phosphates as molecular glues

open access: yesFEBS Letters, EarlyView.
Inositol phosphates (IPs) and phosphoinositides (PIPs) regulate diverse eukaryotic processes. Beyond recruiting signaling proteins or acting as structural cofactors, recent studies suggest they mediate protein–protein interactions as natural molecular glues.
Aleshia Seaton‐Terry   +9 more
wiley   +1 more source

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