Results 61 to 70 of about 683,039 (264)

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Observational Constraints on the Modified Gravity Model (MOG) Proposed by Moffat: Using the Magellanic System

, 2010
A simple model for the dynamics of the Magellanic Stream (MS), in the framework of modified gravity models is investigated. We assume that the galaxy is made up of baryonic matter out of context of dark matter scenario.
A. Bosma, A. Helmi, A. Klypin, A. Nusser, A. Ruzicka, B. Famaey, B. Moore, B. Moore, C. Brüns, C. Mastropietro, C. Murali, C.S. Kochanek, D. Clowe, D. Law, D.N. Spergel, D.N.C. Lin, D.N.C. Lin, D.S. Mathewson, D.S. Mathewson, E.K. Grebel, E.L. Lokas, Evans N. W, G. Gentile, G.G. Kuzmin, G.R. Meurer, G.W. Angus, H. Haghi, H. Haghi, H. Haghi, Hosein Haghi, J. Bekenstein, J. Read, J.D. Bekenstein, J.D. Bekenstein, J.D. Simon, J.R. Brownstein, J.R. Brownstein, J.W. Moffat, J.W. Moffat, J.W. Moffat, J.W. Moffat, J.W. Moffat, J.W. Moffat, J.W. Moffat, K. Johnston, K.G. Begeman, K.V. Johnston, L. Iorio, L. Iorio, L.T. Gardiner, L.T. Gardiner, M. Fujimoto, M. Milgrom, M. Montuori, M. Odenkirchen, M.D. Weinberg, N. Kallivayalil, N. Kallivayalil, P. Heller, P. Wannier, R. Brada, R.C. Dolcetta, R.H. Sanders, R.H. Sanders, R.P. Marel van der, S. Binney, Sohrab Rahvar, T. Ishiyama, T. Ishiyama, T. Murai, T.W. Connors, V.C. Rubin, X. Wu, Y. Sofue   +73 more
core   +1 more source

Comparative analysis of Weibull parameter estimation methods for wind resource assessment: A case study in Mexico

Energy Reports
Wind energy, a key renewable source, requires an accurate assessment of its resources, where the Weibull distribution stands out for its ability to model wind variability.
J. Jafet Cruz-Estudillo, Edson Nicolás-Balderas, J. Pablo Arenas-López, Alejandro Villegas-Ortega, Mohamed Badaoui   +4 more
doaj   +1 more source

Evaluating some Yule-Walker Methods with the Maximum-Likelihood Estimator for the Spectral ARMA Model

Trends in Computational and Applied Mathematics, 2008
The aim of this work is to compare some ARMA spectral separatede stimation methods based on the modified Yule-Walker equation and least squares method with the Maximum-Likelihood estimator, using the convergence curve of the relative mean error (RME ...
M.I.S. Bezerra, Y. Iano, M.H. Tarumoto
doaj   +1 more source

A novel approach to Weibull distribution for the assessment of wind energy speed

Alexandria Engineering Journal, 2023
The latest power sources trend is renewable energy. Numerous researchers, innovators, and technicians work diligently to exploit renewable power. The effectiveness of wind speed data is crucial when estimating wind energy production from a wind turbine ...
Sadiah M.A. Aljeddani, M.A. Mohammea
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Extensive Numerical Analysis of PDF Parameters for Wind Energy in Brazil: A Study Across 27 Cities for 60 Years Wind Speed

IEEE Access
This research conducts a comprehensive numerical assessment of wind energy potential across Brazil, utilizing six decades of wind speed data collected from 27 cities to analyze Probability Density Function (PDF) parameters and enhance wind resource ...
Ahmed Badawi, Amaury Souza, I. M. Elzein, Hassan Ali, Alhareth Zyoud   +4 more
doaj   +1 more source

Temporal characteristics of some aftershock sequences in Bulgaria

Annals of Geophysics, 1999
We apply statistical analysis to study the temporal distribution of aftershocks in aftershock sequences of five earthquakes which occurred in Bulgaria.
D. Solakov, S. Simeonova
doaj   +1 more source

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

Molecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller, Susanne Ebner, Carmen Haselrieder, Julia K. Günther, Astrid Drasche, Sophie Strich, Chiara Volani, Andrea Medici, Aleksandar Nikolajevic, Alex Deltedesco, Johannes E. Sigmund, Michael J. Blumer, Martin Hermann, Johanna Vanacker, Gerald Brandacher, Eduard Stefan, Omar Torres‐Quesada, Jakob Troppmair   +17 more
wiley   +1 more source

Spartan Random Processes in Time Series Modeling

, 2007
A Spartan random process (SRP) is used to estimate the correlation structure of time series and to predict (extrapolate) the data values. SRP's are motivated from statistical physics, and they can be viewed as Ginzburg-Landau models.
Adler, Bouchaud, Box, Chan, Cressie, D.T. Hristopulos, Fisher, Hristopulos, Hristopulos, Lantuejoul, M. Žukovič, Makridakis, Mantegna, Press, Yaglom   +14 more
core   +1 more source