Results 51 to 60 of about 1,371 (244)
British Educational Research Journal, EarlyView.Abstract Character education research is often constrained by blunt methodological tools. Surveys capture breadth without depth; case studies offer richness but lack replicability; and randomised controlled trials (RCTs), though indispensable at the policy level, are costly, disruptive and ill‐suited to everyday practice with individual pupils.
Shane McLoughlin
wiley +1 more source
High Cell Density Cultivation of HEK293 Cells Using a 2L Membrane‐Stirred Bioreactor
Biotechnology and Bioengineering, EarlyView.ABSTRACT The use of perfusion systems for the continuous cultivation of animal cells at high cell density (HCD) for the production of recombinant proteins, viruses, and viral vectors has many advantages. Besides an enhancement of volumetric productivity and high cell viability, the product quality can be improved through a steady‐state environment ...
Lennart Jacobtorweihe +5 more
wiley +1 more source
On Mathematical Models Based on Delay Differential Equations in Epidemiology
Applied SciencesThis paper examines solutions to mathematical models based on functional-differential equations, which have applications in immunology. This new approach allows us to study discontinuous solutions that more accurately depict real-world phenomena. It also
Mieczysław Cichoń, Kinga Cichoń
doaj +1 more source
Journal of Applied Mathematics, 2012 Using two successive reductions: B-equivalence of the system on a variable time scale to a system on a time scale and a reduction to an impulsive differential equation and by Leggett-Williams fixed point theorem, we investigate the existence of three ...
Yongkun Li, Chao Wang
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p-Moment stability of functional differential equations with random impulses
Computers & Mathematics with Applications, 2006 Functional differential equations with random impulses \[ x'(t)= f(t, x_t),\;t\geq t_0,\;t\neq\xi_k,\;x(\xi_k)= I(\tau_k, x(\xi^-_k)),\;k= 1,2,\dots, x_{t_0}= \varphi\tag{1} \] are considered. The following stability conditions were obtained by using Lyapunov's method with Razumikhin condition. Theorem. Let \(x(t)\) be a solution of system (1) and \(p>
Shujin Wu, Xiaolin Guo, Yong Zhou
openaire +2 more sources
Biotechnology and Bioengineering, EarlyView.ABSTRACT Single‐stranded DNA (ssDNA) solutions are promising innovations shaping the future of genetic research and medical therapies. In principle, biotechnological mass production of ssDNA can be achieved using Escherichia coli in a high‐cell density fed‐batch process by secreting phagemid particles derived from the filamentous M13 bacteriophages ...
Nathalie Hafner +4 more
wiley +1 more source
Integrating Products, Processes, and Sourcing for Eco‐Innovation
Business Strategy and the Environment, EarlyView.ABSTRACT Eco‐innovation research has often examined regulatory or technological drivers but has paid limited attention to how long‐term organizational change shapes eco‐innovation in mature, resource‐intensive industries. This study addresses that gap by investigating how two leading Finnish pulp and paper firms integrated product, process, and ...
Misa Bakajic, Anand Nair, Markku Kuula
wiley +1 more source
Mechanochemical Amidation Mediated by 1,1’‐Oxalyldiimidazole for the Synthesis of Agrochemicals
Chemistry – A European Journal, EarlyView.Mechanochemical amidation using 1,1'‐oxalyldiimidazole (ODI) overcomes limitations of 1,1’‐carbonyl diimidazole (CDI) as coupling agent by enabling the efficient mechanochemical synthesis of three marketed agrochemicals from deactivated carboxylic acids.
Andrea Casagrande +6 more
wiley +1 more source
ON THE OPTIMAL IMPULSE CONTROL IN DESCRIPTOR SYSTEMS
Міжнародний науково-технічний журнал "Проблеми керування та інформатики"We study the optimal impulse control problem with quadratic perfomance functional for a descriptor system. The system evolution is described by a linear differential-algebraic equation not solved with respect to the derivative of the state.
Л.А. Власенко +3 more
doaj +1 more source
Chemie Ingenieur Technik, EarlyView.This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler +3 more
wiley +1 more source