Results 41 to 50 of about 1,484,038 (294)

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

Magnetic Ordering in the Spin-Ice Candidate Ho$_2$Ru$_2$O$_7$

, 2004
Neutron scattering measurements on the spin-ice candidate material Ho$_2$Ru$_2$O$_7$ have revealed two magnetic transitions at T $\sim$ 95 K and T $\sim$ 1.4 K to long-range ordered states involving the Ru and Ho sublattices, respectively.
Gardner, J. S., Gaulin, B. D., Greedan, J. E., Jones, C., Kim, S. -J., Luke, G. M., Qiu, Y., Swainson, I., Wiebe, C. R., Wills, A. S.   +9 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Histogram Ordering

IEEE Access, 2021
Frequency histograms are ubiquitous, being practically used in any field of science. In this paper, we present a partial order for frequency histograms and, to our knowledge, no order of this kind has been yet defined.
Mateu Sbert, Cosmin Ancuti, Codruta O. Ancuti, Jordi Poch, Shuning Chen, Marius Vila   +5 more
doaj   +1 more source

Ordering Epic R-fields

Manuscripta Mathematica, 1983
We are concerned with the following problem. Given a ring R and an epic R-field K, under what conditions can K be fully ordered? Epic R-fields can be constructed in terms of matrices over R; this makes it natural to consider matrix cones over R rather than ordinary cones of elements of K.
openaire   +1 more source

Conservation of the stress tensor in perturbative interacting quantum field theory in curved spacetimes

, 2005
We propose additional conditions (beyond those considered in our previous papers) that should be imposed on Wick products and time-ordered products of a free quantum scalar field in curved spacetime.
Dütsch M., ROBERT M. WALD, STEFAN HOLLANDS, Stora R., Streater R. F., Wald R. M.   +5 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Polarization Degree of Magnetic Field Structure Changes Caused by Random Magnetic Field in Gamma-Ray Burst

The Astrophysical Journal
In a Poynting-flux-dominated jet that exhibits an ordered magnetic field, a transition toward turbulence and magnetic disorder follows after magnetic reconnection and energy dissipation during the prompt emission phase. In this process, the configuration
Jiang-Chuan Tuo, Hong-Bang Liu, Qian-Nan Mai, Qian Zhong, Zu-Ke Feng, Kang-Fa Cheng, En-Wei Liang   +6 more
doaj   +1 more source

Beta Distribution Weighted Fuzzy C-Ordered-Means Clustering

Journal of ICT
The fuzzy C-ordered-means clustering (FCOM) is a fuzzy clustering algorithm that enhances robustness and clustering accuracy through the ordered mechanism based on fuzzy C-means (FCM).
Hengda Wang, Mohamad Farhan Mohamad Mohsin, Muhammad Syafiq Mohd Pozi   +2 more
doaj   +1 more source

Intuitionistic fuzzy lattice ordered G-modules [PDF]

Journal of Fuzzy Extension and Applications
The investigation of mathematics underlines accuracy, precision, and flawlessness, yet in numerous genuine circumstances, individuals face equivocalness, ambiguity, imprecision, and so forth.
Poonam Sharma
doaj   +1 more source