Results 21 to 30 of about 225,993 (289)

Precipitation Versus Partitioning Kinetics during the Quenching of Low-Carbon Martensitic Steels

Metals, 2020
Low-carbon, low-alloy steels undergo auto-tempering and carbon partitioning to austenite during quenching to martensite. The microstructures of two such steels quenched at two cooling rates have been evaluated using electron microscopy to characterise ...
Shashank Ramesh Babu, Matias Jaskari, Antti Jarvenpää, Thomas Paul Davis, Jukka Kömi, David Porter   +5 more
doaj   +1 more source

Thermally induced phase transformations of Al93Fe4Nb3 and Al90Fe7Nb3 quenched alloys

Materials Research Express, 2020
Al–based rapidly quenched alloys of composition Al _90 Fe _7 Nb _3 and Al _93 Fe _4 Nb _3 were studied by Mӧssbauer spectroscopy, X–ray powder diffraction and differential scanning calorimetry methods.
O V Shved, S I Mudry, V O Kotsyubynsky, V M Boychuk   +3 more
doaj   +1 more source

Enhancement in the Hardness and Corrosion Resistance of Mild Steel Surfaces by Nickel-Chromium Addition and Rapid Cooling After Welding

Journal of Applied Science and Engineering
In a corrosive environment, it is crucial to increase the hardness and corrosion resistance of mild steel bucket excavators. Making a hard layer of nickel-chromium (NiCr) alloy by the deposition method is one of the many approaches to achieve this.
Sopiyan, Syaripuddin, Adnan Ahmad, Dwi Nanto, Sigit Dwi Yudanto, Ferry Budhi Susetyo   +5 more
doaj   +1 more source

FRET-Based Quantum Dot Immunoassay for Rapid and Sensitive Detection of Aspergillus amstelodami

Sensors, 2011
In this study, a fluorescence resonance energy transfer (FRET)-based quantum dot (QD) immunoassay for detection and identification of Aspergillus amstelodami was developed.
Michele D. Kattke, Elizabeth J. Gao, Kim E. Sapsford, Ashok Kumar, Larry D. Stephenson   +4 more
doaj   +1 more source

Response of Photoluminescence of H-Terminated and Hydrosilylated Porous Si Powders to Rinsing and Temperature

Surfaces, 2020
The photoluminescence (PL) response of porous Si has potential applications in a number of sensor and bioimaging techniques. However, many questions still remain regarding how to stabilize and enhance the PL signal, as well as how PL responds to ...
Kurt W. Kolasinski, Joseph D. Swanson, Benjamin Roe, Teresa Lee   +3 more
doaj   +1 more source

Studying the quenching resulted from the formation of an association complex between olsalazine or sulfasalazine with acriflavine

Royal Society Open Science, 2021
We report the detection and quantification of important ulcerative colitis drugs olsalazine (OLS) and sulfasalazine (SUL) by the spectrofluorometric method.
Manar Tolba, Heba Elmansi
doaj   +1 more source

Self-quenching streamers [PDF]

Nuclear Instruments and Methods in Physics Research, 1982
Self quenching streamers in drift tubes have been observed both optically and electronically. The streamers of 150-200 ?m width extend out from the anode wire to 1.5 to 3 mm at atmospheric pressures. Electronic measurements show that pulses with a rise time of 5 ns reach 30 mV directly into 50 ?
M. Atac, A. V. Tollestrup, D. Potter
openaire   +1 more source

Exciton-like luminescence of KCl matrix under thermoelastic, local and uniaxial deformation

Eurasian Journal of Physics and Functional Materials, 2022
The radiative relaxation of exciton-like formations in KCl-Na single crystal has been studied by exper-imental methods of luminescent spectroscopy. The amplifying effect of the radiation intensity with a maximum at 2.8 eV up to 500 times as compared to ...
K. Shunkeyev, A. Tilep, A. Lushchik, Sh. Sagimbayeva   +3 more
doaj   +1 more source

Effect of Necking Behavior and of Gap Size on the Cooling Rate in Hot Stamping [PDF]

Materials Research, 2016
In this study, a tailored die quenching experimental method using low closing pressures and an aluminum flat die was developed in order to evaluate the effects of the gap size on the cooling rate in the hot stamping process of a 22MnB5 steel grade ...
André Olah Neto, Guilherme Ourique Verran, Gabriel Carvalho Pissolatto, Rodinei Rocha Dutra   +3 more
doaj   +2 more sources

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

FEBS 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, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source