Results 51 to 60 of about 2,375,122 (290)

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

Advances in CALIPSO (IIR) cirrus cloud property retrievals – Part 2: Global estimates of the fraction of cirrus clouds affected by homogeneous ice nucleation [PDF]

Atmospheric Chemistry and Physics
Cirrus clouds can form through two ice nucleation pathways (homo- and heterogeneous ice nucleation; henceforth hom and het, respectively) that result in very different cloud physical and radiative properties.
D. L. Mitchell, A. Garnier
doaj   +1 more source

Analytic continuation of stochastic mechanics [PDF]

Journal of Mathematical Physics, 2022
We study a (relativistic) Wiener process on a complexified (pseudo-)Riemannian manifold. Using Nelson’s stochastic quantization procedure, we derive three equivalent descriptions for this problem. If the process has a purely real quadratic variation, we obtain the one-sided Wiener process that is encountered in the theory of Brownian motion.
openaire   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Regional Characterization of Deep Convective Clouds for Enhanced Imager Stability Monitoring and Methodology Validation

Remote Sensing
The NASA CERES project conducts an independent assessment of the calibration stability of MODIS and VIIRS reflective solar bands to ensure consistency in CERES-derived clouds and radiative flux products.
David Doelling, Prathana Khakurel, Conor Haney, Arun Gopalan, Rajendra Bhatt   +4 more
doaj   +1 more source

Polarization calibration of spaceborne lidar using dense cirrus–scattered solar background with molecular scattering correction [PDF]

Atmospheric Measurement Techniques
Accurate calibration is essential for spaceborne polarization-sensitive lidars, as biases in depolarization ratio measurements can significantly affect the retrieval of cloud and aerosol properties.
Z. Liu, M. A. Vaughan, M. A. Vaughan, P. Zhai, A. E. Garnier, A. E. Garnier, S. Zeng, S. D. Rodier, S. D. Rodier, Y. Hu, A. H. Omar, C. R. Trepte   +11 more
doaj   +1 more source

Approximate analytical and numerical solutions of a nonlinear boundary value problem in fluid mechanics based on symmetry reduction

Partial Differential Equations in Applied Mathematics, 2020
This work presents applications of the Liesymmetry method to a boundary value problem (BVP) of the governing equations in fluid mechanics. The Wu differential characteristic set algorithm is used to obtain a group of multi-parameter symmetries for the ...
Litao Gai, Mingchu Li, Bilige Sudao
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Proceedings of 1949 Civilian Soil Mechanics Conference

, 1950
This is the record of the third annual conference held in Canada on the subject of Soil Mechanics and Foundation Engineering under the auspices of the Associate Committee on Soil and Snow Mechanics.

core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source