Results 71 to 80 of about 17,306,746 (301)

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Quantum deformation of space-time symmetries and interactions [PDF]

open access: yesCzechoslovak Journal of Physics, 1997
We discuss quantum deformations of Lie algebra as described by the noncoassociative modification of its coalgebra structure. We consider for simplicity the quantum $D=1$ Galilei algebra with four generators: energy $H$, boost $B$, momentum $P$ and central generator $M$ (mass generator).
Lukierski, Jerzy, Stichel, Peter C.
openaire   +3 more sources

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Symmetries in physics: philosophical reflections [PDF]

open access: yes, 2002
This is the table of contents and first chapter of "Symmetries in physics: philosophical reflections", edited by Katherine Brading and Elena Castellani, Cambridge University Press, 2003.
Castellani, Elena   +4 more
core  

Temporal Arrows in Space-Time [PDF]

open access: yes, 2013
The prevailing current of thought in both physics and philosophy is that relativistic space-time provides no means for the objective measurement of the passage of time. Kurt Gödel, for instance, denied the possibility of an objective lapse of time, both
Weinert, Friedel
core   +2 more sources

Particle realization of Bondi-Metzner-Sachs symmetry in 2 + 1 space-time

open access: yesJournal of High Energy Physics, 2023
We construct a Lorentz invariant massive particle model in (2+1) space-time with an enlarged set of symmetries which includes Bondi-Metzner-Sachs (BMS) translations (supertranslations), using the non-linear realization framework.
Carles Batlle   +2 more
doaj   +1 more source

Gauge and Space-Time Symmetry Unification

open access: yesInternational Journal of Theoretical Physics, 2000
53 pages, 13 tables, 1 ...
openaire   +2 more sources

Discrete space-time symmetries [PDF]

open access: yesCzechoslovak Journal of Physics, 1993
Symmetries have always fascinated human beings; they are found in nature, art, and architecture. Physicists, like other scientists have often used symmetries as a basis of their understanding of nature. When the dynamics is unknown, symmetries serve to delineate and define it. When the dynamics is known, symmetries are used to study structure.
openaire   +1 more source

Hyperactive ice‐binding proteins stabilize cell membranes and improve resistance to dehydration stress in Caenorhabditis elegans

open access: yesFEBS Open Bio, EarlyView.
TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose   +9 more
wiley   +1 more source

An Elementary Notion of Gauge Equivalence [PDF]

open access: yes, 2007
An elementary notion of gauge equivalence is introduced that does not require any Lagrangian or Hamiltonian apparatus. It is shown that in the special case of theories, such as general relativity, whose symmetries can be identified with spacetime ...
Belot, Gordon
core  

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