Results 91 to 100 of about 158,007 (285)
Advanced Science, EarlyView.A lithium‐bearing slag is investigated with the goal of holistic valorization. The present β‐eucryptite (LiAlSiO4) exhibits a high lithium content and low levels of impurities. The spinel contains most of the chromium and vanadium, representing additional valorization opportunities.
Peter Cornelius Gantz +9 more
wiley +1 more source
Advanced Science, EarlyView.A meta‐YAG crystal with artificially order/disorder structures was fabricated to realize the efficient third‐harmonic generation at 343 nm with a conversion efficiency of 4.5×10−3, surpassing six orders of magnitude compared to bulk YAG crystal. Moreover, a wide spectral tunability from 331 to 356 nm was also achieved in the meta‐YAG, indicating its ...
Xiaotian Guo +6 more
wiley +1 more source
Tongxin xuebao, 2020 In order to address the unfair user-centric energy efficiency (EE) problem caused by channel difference in the backscatter-assisted wireless powered communication network,a resource allocation scheme was proposed.Firstly,a mixed integer nonconvex ...
Yinghui YE, Liqin SHI, Guangyue LU
doaj +2 more sources
Optimized menu formulation to enhance nutritional goals: design of a mixed integer programming model for the workers' food program in Brazil. [PDF]
BMC Nutr, 2023 Padovan M +5 more
europepmc +1 more source
Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
Vitamin D Food Fortification Strategies on Population-Based Dietary Intake Data Using Mixed-Integer Programming. [PDF]
Foods, 2023 Sengupta S +3 more
europepmc +1 more source
A Skills Gap Analysis of Farmer Directors of US Farmer Cooperatives
Agribusiness, EarlyView.ABSTRACT Boards of directors are vital to firm performance and are an integral part of the decision‐making process of any business. Several studies have been conducted that observe corporate or nonprofit board characteristics, skills, and the board's connection to firm performance.
Jody S. Herchenbach +5 more
wiley +1 more source
Defining minimum volume thresholds to increase quality of care: a new patient-oriented approach using mixed integer programming. [PDF]
Eur J Health Econ, 2022 Vogel JFA +3 more
europepmc +1 more source
Solving Lotsizing Problems on Parallel Identical Machines Using Symmetry Breaking Constraints [PDF]
Production planning on multiple parallel machines is an interesting problem, both from a theoretical and practical point of view. The parallel machine lotsizing problem consists of finding the optimal timing and level of production and the best ...
Jans, R.F.
core +1 more source
AIChE Journal, EarlyView.Abstract Recovery of rare earth elements (REEs) from end‐of‐life (EOL) products represents a strategic opportunity to strengthen the domestic supply chain for rare earth elements. This work presents a superstructure‐based optimization framework for finding the most economical processing pathway for different EOL rare earth permanent magnets (REPMs ...
Chris Laliwala +6 more
wiley +1 more source