Now showing items 1375-1394 of 2142

• Progressive shoaling of the equatorial Pacific thermocline over the last eight glacial periods ﻿

(2015)
The depth of equatorial Pacific thermocline is diagnostic of the main modes of tropical climates. Past estimates of Pacific thermocline dynamics have been reconstructed either for the Last Glacial Maximum or on longer ...
• Projected coupled cluster theory ﻿

(2017)
Coupled cluster theory is the method of choice for weakly correlated systems. But in the strongly correlated regime, it faces a symmetry dilemma, where it either completely fails to describe the system or has to artificially ...
• Projected coupled cluster theory: Optimization of cluster amplitudes in the presence of symmetry projection ﻿

(2018)
Methods which aim at universal applicability must be able to describe both weak and strong electronic correlation with equal facility. Such methods are in short supply. The combination of symmetry projection for strong ...
• Projected Hartree-Fock theory as a polynomial of particle-hole excitations and its combination with variational coupled cluster theory ﻿

(2017)
Projected Hartree-Fockﾠtheoryﾠprovides an accurate description of many kinds of strong correlations but does not properly describe weakly correlated systems.ﾠCoupled clusterﾠtheory,ﾠin contrast, does the opposite. It ...
• Projected Hartree–Fock theory ﻿

(2012)
Projected Hartree–Fock (PHF) theory has a long history in quantum chemistry. PHF is here understood as the variational determination of an N-electron broken symmetry Slater determinant that minimizes the energy of a projected ...
• Proper and improper zero energy modes in Hartree-Fock theory and their relevance for symmetry breaking and restoration ﻿

(2013)
We study the spectra of the molecular orbital Hessian (stability matrix) and random-phase approximation (RPA) Hamiltonian of broken-symmetry Hartree-Fock solutions, focusing on zero eigenvalue modes. After all negative ...
• Prostate cancer and neuroendocrine differentiation: more neuronal, less endocrine? ﻿

(2015)
Neuroendocrine differentiation (NED) marks a structural and functional feature of certain cancers, including prostate cancer (PCa), whereby the malignant tissue contains a significant proportion of cells displaying neuronal, ...
• Protein Folding and Structure Prediction from the Ground Up II: AWSEM for a/ß Proteins ﻿

(2016)
The atomistic associative memory, water mediated, structure and energy model (AAWSEM) is an efficient coarse-grained force field with transferable tertiary interactions that incorporates local in sequence energetic biases ...
• Protein Folding and structure Prediction from the Ground Up: The Atomistic Associative Memory Structure and Energy Model (AAWSEM) ﻿

(2016)
The associative memory, water mediated, structure and energy model (AWSEM) is a coarse-grained force field with transferable tertiary interactions that incorporates local in sequence energetic biases using bioinformatically ...
• Protein Frustratometer 2: A tool to localize energetic frustration in protein molecules now with electrostatics ﻿

(2016)
The protein frustratometer is an energy landscape theory-inspired algorithm that aims at localizing and quantifying the energetic frustration present in protein molecules. Frustration is a useful concept for analyzing ...
• Protein Frustratometer 2: a tool to localize energetic frustration in protein molecules, now with electrostatics ﻿

(2016)
The protein frustratometer is an energy landscape theory-inspired algorithm that aims at localizing and quantifying the energetic frustration present in protein molecules. Frustration is a useful concept for analyzing ...
• Protein search for multiple targets on DNA ﻿

(2015)
Protein-DNA interactions are crucial for all biological processes. One of the most important fundamental aspects of these interactions is the process of protein searching and recognizing specific binding sites on DNA. A ...
• PRYSM v2.0: A Proxy System Model for Lacustrine Archives ﻿

(2018)
Reconstructions of temperature and hydrology from lake sedimentary archives have made fundamental contributions to our understanding of past, present, and future climate and help evaluate general circulation models (GCMs). ...
• Pseudorapidity and transverse momentum dependence of flow harmonics in $p\mathrm{Pb}$ and PbPb collisions ﻿

(2018)
Measurements of azimuthal angular correlations are presented for high-multiplicity pPb collisions at √sNN=5.02TeV and peripheral PbPb collisions at √sNN=2.76TeV. The data used in this work were collected with the Compact ...
• Pseudorapidity dependence of long-range two-particle correlations in $p\mathrm{Pb}$ collisions at $\sqrt{{s}_{\mathit{NN}}}=5.02$ TeV ﻿

(2017)
Two-particle correlations in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02TeV are studied as a function of the pseudorapidity separation (Δη) of the particle pair at small relative azimuthal angle ...
• Pseudorapidity distribution of charged hadrons in proton–proton collisions at s=13 TeV ﻿

(2015)
The pseudorapidity distribution of charged hadrons in pp collisions at s=13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. The yield of primary charged ...
• Pseudorapidity distributions of charged hadrons in proton-lead collisions at sNN−−−√=5.02 and 8.16 TeV ﻿

(2018)
The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies sNN−−−√=5.02sNN=5.02 \sqrt{s_{\mathrm{NN}}}=5.02 and 8.16 TeV are presented. The measurements are ...
• PSR J1838−0537: DISCOVERY OF A YOUNG, ENERGETIC GAMMA-RAY PULSAR ﻿

(2012)
We report the discovery of PSR J1838−0537, a gamma-ray pulsar found through a blind search of data from the Fermi Large Area Telescope (LAT). The pulsar has a spin frequency of 6.9 Hz and a frequency derivative of −2.2 × ...
• PSR J2021+4026 in the Gamma Cygni Region: The First Variable y-Ray Pulsar Seen by the Fermi Lat ﻿

(2013)
Long-term monitoring of PSR J2021+4026 in the heart of the Cygnus region with the Fermi Large Area Telescope unveiled a sudden decrease in flux above 100 MeV over a timescale shorter than a week. The "jump" was near MJD ...
• Pyoverdine, a siderophore from Pseudomonas aeruginosa, translocates into C. elegans, removes iron, and activates a distinct host response ﻿

(2018)
Pseudomonas aeruginosa, a re-emerging, opportunistic human pathogen, encodes a variety of virulence determinants. Pyoverdine, a siderophore produced by this bacterium, is essential for pathogenesis in mammalian infections. ...