Results 211 to 220 of about 3,061,238 (284)

The Inka Khipu and Yupana: A Reply to Zen Vasconcellos and Rojas Gamarra (2026)

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT A new analysis by Zen Vasconcellos and Rojas Gamarra offers a novel interpretation of the Inka devices used for calculating (yupana) and recording (khipu) numbers. They claim the Inka devices represented numbers neither positionally, with place value, as most researchers have assumed, nor additively, without place value, a possibility uniquely
Cinzia Florio, Karenleigh A. Overmann
wiley   +1 more source

A system dynamics‐based framework for bioenergy planning in sub‐Saharan Africa: integrating circular bioeconomy and Fourth Industrial Revolution technologies

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Energy scarcity remains a persistent challenge in sub‐Saharan Africa (SSA), where limited access to reliable, affordable, and clean energy constrains socioeconomic development. Biomass resources, including agricultural residues, forest waste, and waste from other biological sources, are widely available, but their use for modern energy ...
Joseph O. Dirisu   +2 more
wiley   +1 more source

Exposure to CYP2C19‐metabolized drugs following acute stroke: A longitudinal cohort study to inform implementation of CYP2C19 genotype testing

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Aims Cytochrome P450 2C19 (CYP2C19) genotype testing is recommended to guide antiplatelet selection after ischaemic stroke and transient ischaemic attack. CYP2C19 also metabolizes several commonly prescribed non‐antiplatelet drugs. We aimed to quantify exposure to CYP2C19‐metabolized drugs in stroke patients at hospital discharge and during ...
Cleodie C. Swire   +3 more
wiley   +1 more source

High-accuracy pseudospectral scheme for fractional diffusion-wave problems based on cardinal functions. [PDF]

open access: yesPLoS One
Saray BN   +5 more
europepmc   +1 more source

The epistemic ceiling: Veteran practitioners' perspectives on primary qualification entry standards for teaching secondary mathematics in Scotland

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This paper presents an exploratory analysis of contemporary curricular and professional qualification policies in the Scottish education system, focusing on minimum qualification thresholds for mathematics teaching. The study examines how veteran secondary mathematics practitioners perceive the structural and pedagogical implications of using ...
Paul Argyle McDonald
wiley   +1 more source

Batch‐to‐Batch Optimization of pH Shifts in CHO Bioreactor Operations

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Culture pH is an important operating parameter in CHO cell cultures producing mAb since it directly affects growth and specific productivity. Mathematical models can be used to optimize the magnitude and timing of pH shifts provided that they are robust to model errors.
Ali Ghodba   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy