Results 31 to 40 of about 5,882 (266)

Aerodynamic model of spark discharge [PDF]

open access: yesJournal of the Chinese Advanced Materials Society, 2013
The contribution presents a new mathematical aerodynamic model of development of spark discharge and corresponding experimental data confirming observation of more separate discharge phases during formation and extinction of the spark discharge. The model is developed using basic physical laws. One of the dominant, calculated and measured properties of
Emil Pincik   +2 more
openaire   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Study on Evaluation Method of Impulse Dispersion Performance of Grounding Device Using X-ray Imagining System

open access: yesEnergies, 2021
When the lightning current enters the ground through the grounding system, the impulse dispersion performance can be observed by the phenomenon of soil spark discharge, which is fundamentally determined by the nearby soil.
Xiaoyan Han   +5 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Influences of discharge modes and gas bubbling conditions on E. coli sterilization by pulsed underwater discharge treatments

open access: yesAIP Advances, 2020
Underwater discharges are considered to be promising solutions to water disinfection problems. In this paper, the sterilization effects of different discharge modes and gas bubbling conditions on E. coli are investigated.
Yuan Li   +4 more
doaj   +1 more source

The development of the spark discharge. II [PDF]

open access: yesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1938
Abstract An account has already been given of observations made with a rotating-film camera in the study of the electric spark in air at atmospheric pressure (Aliibone and Meek 1938; Allibone 1938). The object of the present paper is to extend the previous results, and in particular to describe the development of the spark in air at ...
Thomas Edward Allibone, J. M. Meek
openaire   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Simulation and Analytical Analysis of the Blumlein Discharge Circuit for the Generation of Coherent UV Pulses in Air

open access: yesMajlesi Journal of Electrical Engineering
Blumlein discharge circuit stores electrical energy in its transmission line and can release this energy within a few nanoseconds. This leads the Blumlein to discharge circuit for many applications ranging from electrical discharge in the air to generate
Muddasir Naeem   +4 more
doaj   +1 more source

The Development of Spark Discharges in Hydrogen [PDF]

open access: yesAustralian Journal of Physics, 1969
Streak photography has been used to supplement the earlier shutter photo. graphic investigation of Doran and Meyer (1967) using the same coaxial cable discharge circuit. Additional information has also been obtained from measurement of the potential distribution between the electrodes at two stages in the spark development.
MC Cavenor, J Meyer
openaire   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

open access: yesMolecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla   +9 more
wiley   +1 more source

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