Results 41 to 50 of about 2,050,724 (303)

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Optical image encryption using gamma distribution phase masks in the gyrator domain

open access: yesJournal of the European Optical Society-Rapid Publications, 2018
Background Optical information encryption technology has received extensive attention from researchers in recent years because of its advantages of parallel and high-speed processing capability, as well as the controllability of phase components. Methods
Wenqing Sun   +4 more
doaj   +1 more source

Heat flow

open access: yesEos, Transactions American Geophysical Union, 1971
In the preceding few years both the number and quality of heat flow measurements have increased dramatically, and, except for the explosion aboard the Apollo 13 spacecraft, we might be able to report the first extraterrestrial heat‐flow measurement [see Langseth et al., 1970].Between 1965 and August 1969, the number of heat flow measurements increased ...
openaire   +1 more source

Flow Visualisation Studies On Wall Mounted Pitot Type Intake With Splitter Plate [PDF]

open access: yes, 1991
Flow Visualisation Studies Employing Schlieren/Shadowgraph Technique And -Simple Oil Flow Technique Were Carried Out On A Simple Pitot Type Of 1-Btake With Splitter Plate Mounted On Base Plate In The NAL 0 .3m Tunnel .
Narasimhaswamy, KN, Ramaswamy, MA
core  

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Vertical motion of particles in vibration-induced granular capillarity

open access: yesEPJ Web of Conferences, 2017
When a narrow tube inserted into a static container filled with particles is subjected to vertical vibration, the particles rise in the tube, much resembling the ascending motion of a liquid column in a capillary tube.
Fan Fengxian   +3 more
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Update Heat Flow Density Map for Portugal [PDF]

open access: yes, 2010
New thermal conductivity, heat production and temperature data obtained in Portugal were used to produce a new heat flow density map. Heat flow density values in Portugal vary between 42 and 115 mW/m2 and allow the extrapolation of temperatures to depths
Correia, Antonio, Ramalho, Elsa Cristina
core  

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

PERFORMANCE PREDICTION OF CENTRIFUGAL PUMPS WITH CFD-TOOLS

open access: yesTASK Quarterly, 2001
The CFD-code FLUENT, version 5.4, has been used for the flow analysis of two test pumps of end-suction volute type: one of low specific speed and one of medium specific speed.
ERIK DICK   +3 more
doaj  

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