Results 61 to 70 of about 637,249 (369)

Dynamic delta method for trace gas analysis [PDF]

open access: yes, 1975
Method has been developed in which measurements are made only over viscous flow range, eliminating fractionation before the molecular leak and problems due to surface ...
Hughes, D. B.   +2 more
core   +1 more source

Silver Oxide Coatings with High Silver-Ion Elution Rates and Characterization of Bactericidal Activity

open access: yesMolecules, 2017
This paper reports the synthesis and characterization of silver oxide films for use as bactericidal coatings. Synthesis parameters, dissolution/elution rate, and bactericidal efficacy are reported. Synthesis conditions were developed to create AgO, Ag2O,
Sarah S. Goderecci   +14 more
semanticscholar   +1 more source

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

CONDUTIVIDADE HIDRÁULICA NO PROCESSO DE ELUIÇÃO EM UM SOLO BRUNO-NÃO-CÁLCICO

open access: yesScientia Agricola, 1996
Com o objetivo de avaliar o efeito da porcentagem de sódio trocável do solo e da concentração eletrolítica da água de percolação, sobre a condutividade hidráulica em um solo Bruno-Não-Cálcico da região do Rio Salitre-BA, o presente experimento foi ...
L.N.V. DE ANDRADE, D.E CRUCIANI
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Impact of Manual Addition of Vancomycin to Polymethylmethacrylate (PMMA) Cements

open access: yesAntibiotics
(1) Background: The addition of antibiotics to bone cements is a common practice in the treatment of periprosthetic joint infections. In revision cases, the amount and type of antibiotic is often insufficient and additional antibiotics must be added. The
Clemens Kittinger   +2 more
doaj   +1 more source

Microscale Rearrangement of Ammonium Induced by Snow Metamorphism

open access: yesFrontiers in Earth Science, 2019
Earth’s snowpack hosts chemical impurities that exchange with the overlying air, strongly impacting atmospheric chemistry. Being embedded in firn and glacier ice formed from surface snow, impurities provide the basis for reconstructing past atmospheric ...
Jürg C. Trachsel   +11 more
doaj   +1 more source

"Dry-column" chromatography of plant pigments [PDF]

open access: yes, 1973
Separation of plant pigments which can be accomplished on thin-layer silica plates with mixture of petroleum ether, halocarbon, acetone, and polar solvent can be readily translated into dry-column technique that yields reproducible chromatograms after ...
Lehwalt, M. F.   +2 more
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

Isolation and characterization of Pisum sativum apyrases, PsNTP9 and PsNTP9-DM, cloned and expressed in Escherichia coli [PDF]

open access: yes, 2019
Adenosine triphosphate (ATP) is widely known as a fuel source for many biochemical processes, and to a lesser degree also as a signaling molecule in plants and animals.
Wallen, Michael Andrew, Jr
core   +1 more source

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