Results 51 to 60 of about 1,193,354 (264)

Natural variables for density functionals

Physical Review A, 1997
Various energy functionals in density-functional theory must possess the form of ^b f (z , h ,j1 ,j2 ,. . . ,jn)&, if one assumes that they can be expressed as ^g(l ,r,r(r),r ,r , . . . ,r )&. Here r(r) and r (m) are the electron density and its mth-order gradient; f and g are proper analytic functions of their variables; m is 2 when the functionals ...
openaire   +2 more sources

Phosphoinositides and inositol phosphates as molecular glues

FEBS Letters, EarlyView.
Inositol phosphates (IPs) and phosphoinositides (PIPs) regulate diverse eukaryotic processes. Beyond recruiting signaling proteins or acting as structural cofactors, recent studies suggest they mediate protein–protein interactions as natural molecular glues.
Aleshia Seaton‐Terry, Alexander J. Cutright, Mong Na Claire Loi, Jessica Martin, Joseph W. Gilligan, Jakub N. Kubina, Michael J. Arambula, Susanna Tanada Palmu, Daniella Zhou, Raymond D. Blind   +9 more
wiley   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Radical scavenging activity of some natural tropolones by density functional theory

Bulletin of the Chemical Society of Ethiopia, 2017
The ground state neutral geometries of some natural tropolones, i.e. stipitatonic acid (AF1), stipitalide (AF2), stipitaldehydic acid (AF3) and methyl stipitate (AF4) have been optimized by using Density Functional Theory (DFT) at B3LYP/6-31G*, B3LYP/6 ...
A. G. Al-Sehemi, A. Irfan, A. al Fahad, M. Alfaifi   +3 more
doaj   +1 more source

Decoding the dynamic extracellular matrix in cancer—3D models and bioscaffolds rewire the rules of tumor progression

FEBS Letters, EarlyView.
Cancer progression is regulated by the dynamic matrix code of the tumor microenvironment, which influences cellular behavior and disease development. Importantly, matrix remodeling in three‐dimensional cancer models more accurately reflects in vivo conditions compared to conventional two‐dimensional systems.
Sylvia Mangani, Konstantinos Spanopoulos, Zoi Piperigkou, Nikos K. Karamanos   +3 more
wiley   +1 more source

Fuzzy weighted natural nearest neighbor based density peak clustering

Scientific Reports
DPC (density peaks clustering) algorithm has garnered widespread attention due to its novelty and superior performance. However, it is sensitive to the arbitrary cutoff distance, and its very efficient assignment strategy is prone to leading “domino ...
Mingzhao Wang, Xiangzhong Chen, Juanying Xie   +2 more
doaj   +1 more source

Number Theory Combination: Natural Density and SMT

Abstract The study of theory combination in Satisfiability Modulo Theories (SMT) involves various model theoretic properties (e.g., stable infiniteness, smoothness, etc.). We show that such properties can be partly captured by the natural density of the spectrum of the studied theories, which is the set of sizes of their finite models.
Guilherme Vicentin de Toledo, Yoni Zohar
openaire   +2 more sources

The morphology-density relation: a constant of nature [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractThe Sloan Digital Sky Survey (SDSS) and photometric/spectroscopic surveys of two z ~ 0.8 massive clusters of galaxies and the Chandra Deep Field-South (CDFS) are used to construct volume-limited, stellar mass-selected samples of galaxies at redshifts 0 < z < 1 in a large range of environments. Morphologies are determined visually and with
openaire   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

FEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi, João C. Encarnação, Valeria Napolitano, Grzegorz Dubin, Grzegorz Popowicz, Karl Andersson, U. Helena Danielson   +6 more
wiley   +1 more source

Density-dependent compensatory growth in brown trout (Salmo trutta) in nature. [PDF]

PLoS ONE, 2013
Density-dependence is a major ecological mechanism that is known to limit individual growth. To examine if compensatory growth (unusually rapid growth following a period of imposed slow growth) in nature is density-dependent, one-year-old brown trout ...
L Fredrik Sundström, Rasmus Kaspersson, Joacim Näslund, Jörgen I Johnsson   +3 more
doaj   +1 more source