Results 71 to 80 of about 157,970 (240)

Simultaneous approximation to algebraic numbers by rationals

open access: yesActa Mathematica, 1970
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

AI in chemical engineering: From promise to practice

open access: yesAIChE Journal, EarlyView.
Abstract Artificial intelligence (AI) in chemical engineering has moved from promise to practice: physics‐aware (gray‐box) models are gaining traction, reinforcement learning complements model predictive control (MPC), and generative AI powers documentation, digitization, and safety workflows.
Jia Wei Chew   +4 more
wiley   +1 more source

Technoeconomic and sustainability analysis of batch and continuous crystallization for pharmaceutical manufacturing

open access: yesAIChE Journal, EarlyView.
Abstract In pharmaceutical industries, continuous manufacturing methods have already been well established to improve productivity and process intensification. However, to better understand the trade‐offs of continuous crystallizers over the existing batch production systems, a robust technoeconomic cost and sustainability analysis is necessary to ...
Jungsoo Rhim, Zoltan K. Nagy
wiley   +1 more source

On approximations of solutions of the equation P(z,lnz) = 0 by algebraic numbers

open access: yesMoscow Journal of Combinatorics and Number Theory, 2020
Let \(d_1\) and \(d_2\) be positive integers. Let \(P(x,y)\in\mathbb Z[x,y]\) such that \(\deg_x =d_1\) and \(\deg_y =d_2\). Then, the authors prove that for every \(\varepsilon >0\) and \(r>0\), the inequality \[|P(\theta,\log\theta)|
Galochkin, Alexander   +1 more
openaire   +2 more sources

From continuous to interruptible distillation: Flexible electric heating column architecture with fast start‐up

open access: yesAIChE Journal, EarlyView.
Abstract Electrification of distillation offers a promising route to reducing scope‐1 emissions from one of the chemical industry's most energy‐intensive unit operations. However, conventional adiabatic columns are dynamically inflexible: Long, energy‐intensive start‐ups make shutdown and restart impractical under variable electricity prices and ...
Samuel Mercer, Michael Baldea
wiley   +1 more source

Two classes of real numbers and formal power series: quasi algebraic objects [PDF]

open access: yes, 2014
Maurizio Citterio and Rodolfo Talamo, "Two classes of real numbers and formal power series: quasi algebraic objects", in: Rendiconti dell’Istituto di Matematica dell’Università di Trieste.
Citterio, Maurizio, Talamo, Rodolfo
core   +1 more source

Effective approximation to complex algebraic numbers by quadratic numbers

open access: yesCanadian Mathematical Bulletin
AbstractWe establish an effective improvement on the Liouville inequality for approximation to complex nonreal algebraic numbers by quadratic complex algebraic numbers.
Prajeet Bajpai, Yann Bugeaud
openaire   +2 more sources

A Unifying Approach to Self‐Organizing Systems Interacting via Conservation Laws

open access: yesAdvanced Intelligent Discovery, EarlyView.
The article develops a unified way to model and analyze self‐organizing systems whose interactions are constrained by conservation laws. It represents physical/biological/engineered networks as graphs and builds projection operators (from incidence/cycle structure) that enforce those constraints and decompose network variables into constrained versus ...
F. Barrows   +7 more
wiley   +1 more source

Modeling Multicomponent Fuel Droplet Vaporization with Finite Liquid Diffusivity Using Coupled Algebraic-Dqmom with Delumping [PDF]

open access: yes, 2018
Multicomponent fuel droplet vaporization models for use in combustion CFD codes often prioritize computational efficiency over model complexity. This leads to oversimplifying assumptions such as single component droplets or infinite liquid diffusivity ...
Cooney, Alanna Y., Singer, Simcha L.
core   +1 more source

Effective simultaneous approximation of complex numbers by conjugate algebraic integers [PDF]

open access: yesActa Arithmetica, 1993
Soient \(\varepsilon>0\) et \(z_ 1,\dots,z_ n\in\mathbb{C}\), \(n\) (\(\geq 1\)) nombres complexes distincts. Alors il existe un polynôme unitaire (monic) irréductible de degré \(n+1\) à coefficients dans \(\mathbb{Z}[i]\) dont les racines \(\zeta_ 1,\dots,\zeta_{n+1}\) vérifient \(| z_ j- \zeta_ j|
openaire   +1 more source

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