Results 81 to 90 of about 4,208,561 (328)

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Mid-Infrared Photoacoustic Detection of Glucose in Human Skin: Towards Non-Invasive Diagnostics

Sensors, 2016
Diabetes mellitus is a widespread metabolic disease without cure. Great efforts are being made to develop a non-invasive monitoring of the blood glucose level.
Jonas Kottmann, Julien M. Rey, Markus W. Sigrist   +2 more
doaj   +1 more source

Laser spectroscopy for nuclear structure physics

, 2016
High-resolution laser spectroscopy is an established powerful tool in the study of nuclear shape, size and multipole moments. Measurements of the hyperfine structures and isotope shifts in the atomic spectra of radioactive nuclei provide unique insight ...
P. Campbell, I. Moore, M. Pearson
semanticscholar   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

A laser excitation scheme for $^{229\text{m}}$Th

, 2017
Direct laser excitation of the lowest known nuclear excited state in $^{229}$Th has been a longstanding objective. It is generally assumed that reaching this goal would require a considerably reduced uncertainty of the isomer's excitation energy compared
Kazakov, Georgy, Pálffy, Adriana, Seiferle, Benedict, Stellmer, Simon, Thirolf, Peter G., von der Wense, Lars, Weitenberg, Johannes   +6 more
core   +2 more sources

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source

Metabolism changes caused by glucose in normal and cancer human brain cell lines by Raman imaging and chemometric methods

Scientific Reports
Glucose is the main source of energy for the human brain. This paper presents a non-invasive technique to study metabolic changes caused by glucose in human brain cell lines.
Monika Kopec, Karolina Beton-Mysur, Jakub Surmacki, Halina Abramczyk   +3 more
doaj   +1 more source

Determination of the Effective Lifetime of a Spinor Bose–Einstein Condensate

Photonics
The effective lifetime of ultra-cold atoms in specific quantum states plays a crucial role in studying interaction parameters within quantum systems. Measuring the effective lifetime of various quantum states within ultra-cold atoms is a fundamental task
Xin Wang, Yong Qin, Jun Jian, Wenliang Liu, Jizhou Wu, Yuqing Li, Vladimir Sovkov, Jie Ma   +7 more
doaj   +1 more source

The proton radius puzzle

, 2017
High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy,
Ahmed, M. Abdou, Amaro, F. D., Amaro, P., Antognini, A., Bigot, E. -O. Le, Biraben, F., Cardoso, J. M. R., Carvalho, M. L., Covita, D. S., Dax, A., Dhawan, S., Diepold, M., Fernandes, L. M. P., Franke, B., Galtier, S., Giesen, A., Gouvea, A. L., Graf, T., Guerra, M., Götzfried, J., Haack, J., Hildebrandt, M., Hänsch, T. W., Indelicato, P., Julien, L., Kirch, K., Knecht, A., Knowles, P., Kottmann, F., Krauth, J. J., Liu, Y. -W., Lopes, J. A. M., Ludhova, L., Machado, J., Monteiro, C. M. B., Mulhauser, F., Nebel, T., Nez, F., Pohl, R., Rabinowitz, P., Rapisarda, E., Santos, J. M. F. dos, Santos, J. P., Schaller, L. A., Schuhmann, K., Schwob, C., Szabo, C. I., Taqqu, D., Veloso, J. F. C. A., Voss, A., Weichelt, B., Willig, M.   +51 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source