Results 81 to 90 of about 10,533,673 (391)

Reduction of Activation Energy Barrier of Stone-Wales Transformation in Endohedral Metallofullerenes

open access: yes, 2005
We examine effects of encapsulated metal atoms inside a C$_{60}$ molecule on the activation energy barrier to the Stone-Wales transformation using {\it ab initio} calculations. The encapsulated metal atoms we study are K, Ca and La which nominally donate
D. Vanderbilt   +6 more
core   +1 more source

N=2 Supermultiplet of Currents and Anomalous Transformations in Supersymmetric Gauge Theory [PDF]

open access: yes, 1996
We examine some properties of supermultiplet consisting of the U(1)_{J} current, extended supercurrents, energy-momentum tensor and the central charge in N=2 supersymmetric Yang-Mills theory.
H. ITOYAMA   +3 more
core   +2 more sources

Energy Transformations during Horizontal Walking [PDF]

open access: yesScientific American, 1915
Mode of access: Internet.
Benedict, Francis Gano, 1870-1957.   +1 more
openaire   +3 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Enabling Production of Algal Biofuels by Techno-Economic Optimization of Co-Product Suites

open access: yesFrontiers in Chemical Engineering, 2022
Recent techno-economic analysis (TEA) has underscored that for algal biofuels to be cost competitive with petroleum fuels, co-products are necessary to offset the cost of fuel production.
Jacob S. Kruger   +8 more
doaj   +1 more source

Schrieffer-Wolff transformation for quantum many-body systems

open access: yes, 2011
The Schrieffer-Wolff (SW) method is a version of degenerate perturbation theory in which the low-energy effective Hamiltonian H_{eff} is obtained from the exact Hamiltonian by a unitary transformation decoupling the low-energy and high-energy subspaces ...
Abrikosov   +37 more
core   +1 more source

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

open access: yesFEBS 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   +10 more
wiley   +1 more source

Mass Transport Limitations and Kinetic Consequences of Corn Stover Deacetylation

open access: yesFrontiers in Energy Research, 2022
Alkaline pretreatment of herbaceous feedstocks such as corn stover prior to mechanical refining and enzymatic saccharification improves downstream sugar yields by removing acetyl moieties from hemicellulose.
Nicholas E. Thornburg   +12 more
doaj   +1 more source

2D Transformations of Energy Signals for Energy Disaggregation

open access: yesSensors, 2022
The aim of Non-Intrusive Load Monitoring is to estimate the energy consumption of individual electrical appliances by disaggregating the overall power consumption that has been sampled from a smart meter at a house or commercial/industrial building. Last decade’s developments in deep learning and the utilization of Convolutional Neural Networks have ...
Pascal A. Schirmer, Iosif Mporas
openaire   +3 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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