Results 101 to 110 of about 27,933,437 (394)

Derivation of the Blackbody Radiation Spectrum from a Natural Maximum-Entropy Principle Involving Casimir Energies and Zero-Point Radiation [PDF]

, 2002
By numerical calculation, the Planck spectrum with zero-point radiation is shown to satisfy a natural maximum-entropy principle whereas alternative choices of spectra do not.
Abramowitz M, Becker R, Boas R P, Boyer T H, Boyer T H, Boyer T H, Boyer T H, Boyer T H, Boyer T H, Boyer T H, Boyer T H, Casimir H B G, Cole D C, Cole D C, Cole D C, Eisberg R, Garrod C, Hardy G H, Jeffreys H, Lamoreaux S K, Lavenda B H, Mohideen U, Morse P M, Planck M, Power E A, Richtmyer F K, Sparnaay M J, Timothy H Boyer   +27 more
core   +2 more sources

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

FEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke, Nils Alexander Lakomek, Georg Groth   +2 more
wiley   +1 more source

Effects of cutting the blade on the performance and pressure pulsation of a centrifugal pump

Energy Science & Engineering, 2020
To solve the severe flow‐induced vibration during the pump operation, the impeller cut is a reasonable and operable approach. In the present study, effects of cutting the blade on the pump performance, especially for pressure pulsations, are conducted by
Ning Zhang, Bo Gao, Xiaojun Wang, Xiaokai Liu, Dan Ni   +4 more
doaj   +1 more source

Mechanistic basis for inhibition of the extended‐spectrum β‐lactamase GES‐1 by enmetazobactam and tazobactam

FEBS Letters, EarlyView.
Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer, Philip Hinchliffe, Marko Hanževački, Christopher R. Bethel, Catherine L. Tooke, Marc W. Van der Kamp, Krisztina M. Papp‐Wallace, Robert A. Bonomo, Stuart Shapiro, Adrian J. Mulholland, James Spencer   +10 more
wiley   +1 more source

Influence of different opacities and layering technique of nanotechnology composite resins regarding the wavelength and fluorescence intensity: in vitro study

Journal of Oral Research
Objective: To evaluate the influence of opacity and the layering technique on the fluorescence of different composite resins. Materials and Methods: Two opacities (enamel and dentin) and the layering technique (enamel + dentin) of the composite resins ...
Carla Portocarrero-Flores, Thais Alcandré, Alberth Correa-Medina   +2 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Analysis of the unbound spectrum of 12Li [PDF]

Nuclear Physics A, 2011
The unbound nucleus $^{12}$Li is evaluated by studying three-neutron one-proton excitations within the multistep shell model in the complex energy plane. It is found that the ground state of this system consists of an antibound $2^-$ state. A number of narrow states at low energy are found which ensue from the coupling of resonances in $^{11}$Li to ...
Xu, Z.X., Liotta, R.J., Qi, C., Roger, T., Roussel-Chomaz, P., Savajols, H., Wyss, R.   +6 more
openaire   +5 more sources

Biophysical analysis of angiotensin II and amyloid‐β cross‐interaction in aggregation and membrane disruption

FEBS Letters, EarlyView.
Angiotensin II (AngII), a neuropeptide, interacts with amyloid‐β (Aβ), a key player in Alzheimer's disease. This study reveals that AngII reduces Aβ aggregation and membrane disruption in vitro. Biophysical assays and molecular modeling suggest AngII binds disordered Aβ forms, potentially modulating early amyloidogenic events and contributing to ...
Mohsen Habibnia, Eric Catalina‐Hernandez, Maialen Cabrerizo‐Idiazabal, Ramon Barnadas‐Rodríguez, Mario Lopez‐Martin, Alex Peralvarez‐Marin   +5 more
wiley   +1 more source

Nanotecnología: avances y expectativas en cirugía Nanotechnology: advances and expectations in surgery

Revista Colombiana de Cirugía, 2012
La nanotecnología es una ciencia enfocada al estudio y la manipulación de partículas sólidas coloidales de tamaños que oscilan entre 10 y 1.000 nanómetros, que, a su vez, pueden ser usadas ampliamente en el campo quirúrgico como elementos de diagnóstico ...
Sara Jaimes, Alisia González, Carolina Granados, David Álvarez, Erick Espitia   +4 more
doaj  

Non-Invasive Quantitative Muscle Fatigue Estimation Based on Correlation Between sEMG Signal and Muscle Mass

IEEE Access, 2020
Muscle fatigue is required to be assessed in real-time to maintain the best physical condition, especially for sports and rehabilitation areas. In recent years, numerous studies proposed muscle fatigue estimation methods with non-invasive surface ...
Inyeol Yun, Jinpyeo Jeung, Yonghun Song, Yoonyoung Chung   +3 more
doaj   +1 more source