Results 81 to 90 of about 2,201,987 (292)

Time reparameterization in Bianchi type I spinor cosmology

, 2007
The problem of time reparameterization is addressed at both the classical and quantum levels in a Bianchi-I universe in which the matter source is a massive Dirac spinor field.
Armendariz-Picon, B. Vakili, Blyth, Christodoulakis, DeWitt, D’Eath, Gibbons, H.R. Sepangi, Halliwell, Hartle, Hawking, Henneaux, Henneaux, Hervik, Isham, Jauch, Khvedelidze, Magnus, Misner, Nelson, Pons, Ryan, Ryan, Saha, Saha, Shestakova, Shestakova, Vakili, Vakili, Vilenkin, Vilenkin, Vilenkin, Vilenkin, Vilenkin   +33 more
core   +2 more sources

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

Acoustic field reconstruction in the presence of masking objects

Acta Acustica
In acoustics, field reconstruction methods aim at retrieving acoustic fields (pressure, velocity and intensity) from acoustic measurements around a radiating source, which is often a vibrating structure of complex shape (pumps, engines…).
Dabankah Emmanuel Manu, Totaro Nicolas, Colangeli Claudio, Antoni Jérôme   +3 more
doaj   +1 more source

Generalisation of the identity method for determination of high-order moments of multiplicity distributions with a software implementation

, 2018
The incomplete particle identification limits the experimentally-available phase space region for identified particle analysis. This problem affects ongoing fluctuation and correlation studies including the search for the critical point of strongly ...
Mackowiak-Pawlowska, Maja, Przybyla, Piotr   +1 more
core   +1 more source

Navigating new norms: a systematic review of factors for the development of effective digital tools in higher education

FEBS Open Bio, EarlyView.
What factors make for an effective digital learning tool in Higher Education? This systematic review identifies elements of a digital tool that published examples reveal to be features of an engaging and impactful digital tool. A systematic literature search yielded 25 research papers for analysis.
Akmal Arzeman, Jessica Haines, Connie Pritchard, Stephen Rutherford, Nigel Francis   +4 more
wiley   +1 more source

Recovering of dual time-varying source terms in a system of coupled time-fractional diffusion equations

AIMS Mathematics
The present study is devoted to investigating the inverse problem of simultaneously reconstructing two source terms that depend solely on time in a system of coupled fractional reaction–diffusion equations.
Maroua Nouar, Maged Z. Youssef, Hamed Ould Sidi, Abdeldjalil Chattouh   +3 more
doaj   +1 more source

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

FEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies, Garth L. Maker, Ian F. Musgrave, Samantha Lodge   +3 more
wiley   +1 more source

Bayesian semi non-negative matrix factorisation [PDF]

, 2016
Non-negative Matrix Factorisation (NMF) has become a standard method for source identification when data, sources and mixing coefficients are constrained to be positive-valued.
Belanche Muñoz, Luis Antonio, Vellido Alcacena, Alfredo, Vilamala Muñoz, Albert   +2 more
core  

Accurate 3D Cell Segmentation using Deep Feature and CRF Refinement

, 2019
We consider the problem of accurately identifying cell boundaries and labeling individual cells in confocal microscopy images, specifically, 3D image stacks of cells with tagged cell membranes. Precise identification of cell boundaries, their shapes, and
Belteton, Samuel A., Jiang, Jiaxiang, Kao, Po-Yu, Manjunath, B. S., Szymanski, Daniel B.   +4 more
core   +1 more source

Source identification problems for hyperbolic differential and difference equations

AIP Conference Proceedings, 2017
Abstract In the present study, a source identification problem for a one-dimensional hyperbolic equation is investigated. Stability estimates for the solution of the source identification problem are established. Furthermore, a first-order-of-accuracy difference scheme for the numerical solution of the source identification problem is ...
Allaberen Ashyralyev, Fathi Emharab
openaire   +4 more sources