Results 51 to 60 of about 972,099 (307)
Digital image processing of optical density wave propagation in Dictyostelium discoideum and analysis of the effects of caffeine and ammonia [PDF]
, 1989 Waves of chemotactic movement during the early phase of aggregation in Dictyostelium discoideum were analyzed by digital image processing in a manner that immediately shows the following parameters: wave propagation velocity, period length, wave ...
Siegert, Florian, Weijer, Cornelis J.
core +1 more source
Identification of a cyclic-AMP-responsive element within the rat somatostatin gene.
Proceedings of the National Academy of Sciences of the United States of America, 1986 We have examined the regulation of somatostatin gene expression by cAMP in PC12 rat pheochromocytoma cells transfected with the rat somatostatin gene. Forskolin at 10 microM caused a 4-fold increase in somatostatin mRNA levels within 4 hr of treatment in
M. Montminy +4 more
semanticscholar +1 more source
Activation of STING Based on Its Structural Features
Frontiers in Immunology, 2022 The cGAS-cGAMP-STING pathway is an important innate immune signaling cascade responsible for the sensing of abnormal cytosolic double-stranded DNA (dsDNA), which is a hallmark of infection or cancers.
Behzad Hussain +8 more
doaj +1 more source
Asynchronous Neural Networks for Learning in Graphs [PDF]
arXiv, 2022 This paper studies asynchronous message passing (AMP), a new paradigm for applying neural network based learning to graphs. Existing graph neural networks use the synchronous distributed computing model and aggregate their neighbors in each round, which causes problems such as oversmoothing and limits their expressiveness.
arxiv
Applications of the Theory of Aggregated Markov Processes in Stochastic Learning Theory [PDF]
arXiv, 2023 A stochastic process that arises by composing a function with a Markov process is called an aggregated Markov process (AMP). The purpose of composing a Markov process with a function can be a reduction of dimensions, e.g., a projection onto certain coordinates. The theory around AMP has been extensively studied e.g.
arxiv
Convolutional Approximate Message-Passing [PDF]
, 2020 This letter proposes a novel message-passing algorithm for signal recovery in compressed sensing. The proposed algorithm solves the disadvantages of approximate message-passing (AMP) and orthogonal/vector AMP, and realizes their advantages. AMP converges only in a limited class of sensing matrices while it has low complexity.
arxiv +1 more source
Annals of Surgery, 1976 Cyclic AMP is believed to be the intracellular agent which mediates the action of many hormones on their target cell. The mechanisms by which the nucleotide controls glycogen metabolism in liver and skeletal muscle seem to be firmly established. Data relevant to this area of research are selectively reviewed.
openaire +3 more sources
Dunce mutants of Drosophila melanogaster: mutants defective in the cyclic AMP phosphodiesterase enzyme system [PDF]
, 1981 The cyclic AMP and cyclic GMP phosphodiesterase activities present in flies of six mutant strains of the dunce gene and in the parent wild- type strains are characterized. All of the mutants exhibit aberrant cyclic AMP metabolism.
Davis, Ronald L., Kiger, John A., Jr.
core +1 more source
Guanidinium phenylarsonate–guanidine–water (1/1/2)
Acta Crystallographica Section E, 2010 In the structure of the title compound, CH6N3+·C6H6AsO3−·CH5N3·2H2O, the phenylarsonate anion participates in two R22(8) cyclic hydrogen-bonding interactions, one with a guanidinium cation, the other with a guanidine ...
Graham Smith, Urs D. Wermuth
doaj +1 more source
Compressive Imaging via Approximate Message Passing with Image Denoising [PDF]
, 2014 We consider compressive imaging problems, where images are reconstructed from a reduced number of linear measurements. Our objective is to improve over existing compressive imaging algorithms in terms of both reconstruction error and runtime. To pursue our objective, we propose compressive imaging algorithms that employ the approximate message passing (
arxiv +1 more source