Results 101 to 110 of about 262,073 (323)
Advanced Functional Materials, EarlyView.A mechanically tunable hydrogel composed of gelatin, chondroitin sulfate and laminin promotes angiogenesis in vitro without the supplement of growth factors. Endothelial cells morphogenesis was further enhanced by medium conditioned with bioactive glass 58S‐released ions (Ca and Si), thus offering a promising strategy to vascularize 3D tissue ...
Marco Piazzoni +13 more
wiley +1 more source
Modeling of critical systems implementing negative events using dual Petri nets
MATEC Web of Conferences, 2018 This work is devoted to solving the problem of modeling critical systems based on the use of modified Petri nets. The dual (binary) Petri net one of the modifications, which allows us to view inversing events at the same time, solving the problem with ...
Ganzhur Marina A. +2 more
doaj +1 more source
A Method of Sample Models of Program Construction in Terms of Petri Nets
Моделирование и анализ информационных систем, 2015 In the article a method of automated construction of Petri nets simulating the behaviour of imperative programs is considered from the formal point of view.
D. I. Kharitonov +3 more
doaj +1 more source
Performance Optimization for a Class of Petri Nets. [PDF]
Sensors (Basel), 2023 Shi W, He Z, Gu C, Ran N, Ma Z.
europepmc +1 more source
Advanced Functional Materials, EarlyView.[NiFe]‐hydrogenases efficiently catalyze hydrogen conversion, but their instability limits biotechnological applications. Here it is shown that encapsulating hydrogenase into hierarchical COFs with macro‐ and micropores and functionalized with sulfonic or carboxylic acid groups improves enzyme stability and electron transfer to electrodes.
Islam E. Khalil +12 more
wiley +1 more source
An analytical method for well-formed workflow/Petri net verification of classical soundness
International Journal of Applied Mathematics and Computer Science, 2014 In this paper we consider workflow nets as dynamical systems governed by ordinary difference equations described by a particular class of Petri nets. Workflow nets are a formal model of business processes.
Clempner Julio
doaj +1 more source
Protocol for biomodel engineering of unilevel to multilevel biological models using colored Petri nets. [PDF]
STAR Protoc, 2023 Liu F, Heiner M, Gilbert D.
europepmc +1 more source
Encoding Higher Level Extensions of Petri Nets in Answer Set Programming
, 2013 Answering realistic questions about biological systems and pathways similar to the ones used by text books to test understanding of students about biological systems is one of our long term research goals.
Anwar, Saadat +2 more
core +1 more source
Quantum‐Grade Nanodiamonds from a Single‐Step, Industrial‐Scale Pressure and Temperature Process
Advanced Functional Materials, EarlyView.Novel method for creation of nitrogen‐vacancy centers in 50‐nm nanodiamonds based on high‐temperature plastic deformation is demonstrated. Compared to the electron irradiation approach, it yields nitrogen‐vacancy centers with significantly improved charge stability, T1 relaxation time, and optical Rabi contrast.
Yahua Bao +17 more
wiley +1 more source
Measuring ancient technological complexity and its cognitive implications using Petri nets. [PDF]
Sci Rep, 2023 Fajardo S, Kozowyk PRB, Langejans GHJ.
europepmc +1 more source