Results 41 to 50 of about 43,572 (267)

Thunderstorm total lightning activity behavior associated with transmission line trip events of power system

open access: yesnpj Climate and Atmospheric Science
High-voltage transmission lines are susceptible targets for lightning strikes. It is an interesting topic how the trip event of transmission line is related to the area, location, and intensity of thunderstorms occurring at that time and that place ...
Muzi Li   +6 more
doaj   +1 more source

Terrain Effects on Time-Frequency Characteristics of Negative Return Stroke Electric Fields: A Path-Incremental Method

open access: yesRemote Sensing
Waveforms recorded by lightning location networks mix source variability with propagation effects, making terrain-associated distortion difficult to isolate.
Yiting Chen   +7 more
doaj   +1 more source

Seasonal Influences on the Impulse Characteristics of Grounding Systems for Tropical Countries

open access: yesEnergies, 2019
One of the most important parameters of the performance of grounding systems is the soil resistivity. As generally known, the soil resistivity changes seasonally, hence the performance of grounding systems, at DC and under high impulse conditions.
Muhd Shahirad Reffin   +6 more
doaj   +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

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Incompatibilism and the Principle of Sufficient Reason in Kant’s 'Nova Dilucidatio'

open access: yesJournal of Modern Philosophy, 2022
The consensus is that in his 1755 'Nova Dilucidatio', Kant endorsed broadly Leibnizian compatibilism, then switched to a strongly incompatibilist position in the early 1760s.
Aaron Wells
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

Ground confluence [PDF]

open access: yes, 1987
In this paper we introduce a test for confluence on ground terms. This test allows us to prove the ground confluence of term rewriting systems where the Knuth-Bendix Algorithm does not terminate. Ground Confluence of term rewriting systems is sufficient, if one is interested in congruences on ground terms.
openaire   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Lightning‐Induced Overvoltage on Overhead Distribution Line via Hybrid MTL‐PEEC Method

open access: yesHigh Voltage
Transient simulation are more economical and adaptable means of studying lightning overvoltage for overhead distribution line system compared to experiments. A hybrid multi‐transmission‐line (MTL)‐partial element equivalent circuit (PEEC) method proposed
Runyu Fu   +7 more
doaj   +1 more source

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