Results 51 to 60 of about 98,754 (272)
A topos perspective on the Kochen-Specker theorem: II. Conceptual Aspects, and Classical Analogues: [PDF]
, 1998 In a previous paper, we have proposed assigning as the value of a physical quantity in quantum theory, a certain kind of set (a sieve) of quantities that are functions of the given quantity.
Butterfield, J., Isham, C. J.
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Topos theory and `neo-realist' quantum theory
, 2007 Topos theory, a branch of category theory, has been proposed as mathematical basis for the formulation of physical theories. In this article, we give a brief introduction to this approach, emphasising the logical aspects.
A. Döring +20 more
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Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Role of the phloem in the biochemistry and ecophysiology of benzylisoquinoline alkaloid metabolism
Frontiers in Plant Science, 2013 Benzylisoquinoline alkaloids (BIAs) are a diverse group of biologically active specialized metabolites produced mainly in four plant families. BIA metabolism is likely of monophyletic origin and involves multiple enzymes yielding structurally diverse ...
Eun-Jeong eLee +2 more
doaj +1 more source
Optimization of airflow cylinder sieve for threshed rice separation using CFD-DEM
Engineering Applications of Computational Fluid Mechanics, 2020 The airflow cylinder sieve directly affects the harvesting effect as one of the main components of the rice combine harvester. The process of grain separated from threshed rice mixture is a multi-physical random pattern. This paper constructed accurately
Jianbo Yuan +5 more
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Study on matching optimization of screening efficiency and screen surface wear of flip screen
Meitan kexue jishu, 2023 In order to improve the production efficiency of the coal washing process, increase the service life of the washing equipment, maximize the potential production capacity of the screening equipment in the coal preparation plant, improve the rationality of
Yongli ZHOU +5 more
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Function‐driven design of a surrogate interleukin‐2 receptor ligand
FEBS Letters, EarlyView.Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang +9 more
wiley +1 more source
Frontiers in Plant Science, 2013 Apart from a few using cut aphid stylets, no attempts have been made thus far to measure in vivo sucrose-uptake properties of sieve elements. We investigated the kinetics of sucrose uptake by single sieve elements and phloem parenchyma cells in Vicia ...
Jens B. Hafke +3 more
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Foliar Phenotypic Plasticity Reflects Adaptation to Environmental Variability
Plants, 2023 Arabidopsis thaliana ecotypes adapted to native habitats with different daylengths, temperatures, and precipitation were grown experimentally under seven combinations of light intensity and leaf temperature to assess their acclimatory phenotypic ...
William W. Adams +5 more
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Sugar Coating the Phloem Sieve Element Wall [PDF]
Plant Physiology, 2018 Whereas fluorescent tagging of proteins has dramatically advanced the study of protein function in cell biology, similar approaches with walls have been difficult due to the few methods available to visualize polysaccharides and monitor their dynamic modifications.
openaire +2 more sources