Results 121 to 130 of about 12,947,404 (311)

Measuring data locality ratio in virtual MapReduce cluster using WorkflowSim

open access: yes, 2017
peer reviewedThe data locality is significant factor which has a direct impact on the performance of MapReduce framework. Several previous works have proposed alternative scheduling algorithms for improving the performance by increasing data locality ...
Lavangnananda, Kittichai   +5 more
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

THE ENVIRONMENTALLY OPTIMAL TRADING RATIO [PDF]

open access: yes
In the standard economic model of cap and trade policies, the regulator is assumed to place zero value on pollution reductions below the cap. This paper considers an alternative case, where the policy makers can manipulate the rules of the program to ...
Woodward, Richard T.
core  

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Reliability Analysis of Residential Photovoltaic Systems Across Five Climatic Zones: Performance, Degradation, and Fault Trends

open access: yesEnergies
This study analyses the long-term reliability of 100 residential PV systems monitored for 7–11 years across 33 countries and five climate zones. System performance was evaluated using the temperature-corrected performance ratio (PRTcorr), following IEC ...
Mahmoud Dhimish   +2 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

PV System Performance Analysis and Forecasting Using Deep Learning and Statistical Methods

open access: yesEnergies
This study investigates the long-term performance degradation and forecasting of three silicon-based photovoltaic technologies—polycrystalline (pc-Si), monocrystalline (mc-Si), and amorphous silicon (a-Si)—using a seven-year dataset (2015–2021) from a ...
Mustapha Adar   +2 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Influence of Semi-Arid Environmental Conditions on PR and PLR of a 150 kWp Photovoltaic System

open access: yesIEEE Access
This article presents an analysis of the operational performance and degradation of a 150 kWp grid-connected photovoltaic (PV) power plant located in the Brazilian semi-arid region.
Jose Ragner Brito De Sousa   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy