Results 81 to 90 of about 1,229,375 (235)

Can DNA from wet, temperate soils be used for palaeoecological reconstruction?

Journal of Quaternary Science, EarlyView.
ABSTRACT Sedimentary ancient DNA in well‐dated contexts (sedaDNA) has great potential as a palaeoecological proxy. A few studies have attempted palaeoecological reconstructions using sedaDNA from soil; these studies have been mainly restricted to cold and/or dry soils.
Nick A. Cutler, Doreen Yu‐Tuan Huang, Richard T. Streeter, Andrew J. Dugmore   +3 more
wiley   +1 more source

Laser acceleration of monoenergetic protons via a double layer emerging from an ultra-thin foil [PDF]

, 2009
We present theoretical and numerical studies of the acceleration of monoenergetic protons in a double layer formed by the laser irradiation of an ultra-thin film.
Shukla, Padma K., Liu, Chuan S., Shao, Xi, Sagdeev, Roald Z., Eliasson, Bengt   +4 more
core   +2 more sources

Design of high-gain laser fusion with heatwave-driven fast ignition scheme for inertial fusion energy

Nuclear Fusion
We design a high-gain laser fusion employing a fast ignition scheme for inertial fusion energy with a total laser energy less than 1 megajoule. A solid-sphere target which is robust to hydro instabilities is utilized instead of a fragile shell target ...
Y. Sentoku, H. Nagatomo, T. Johzaki, N. Iwata   +3 more
doaj   +1 more source

Energy and wavelength scaling of shock-ignited inertial fusion targets

New Journal of Physics, 2013
In inertial fusion shock ignition, separation of the stages of fuel compression and hot spot creation introduces some degree of design flexibility. A lower implosion velocity can be compensated for by a more intense ignition pulse.
S Atzeni, A Marocchino, A Schiavi, G Schurtz   +3 more
doaj   +1 more source

NTECARS: A Nonthermal Equilibrium CARS Spectra Fitting Code

Journal of Raman Spectroscopy, EarlyView.
We present NTECARS, an open‐source code written in Julia for the calculation and fitting of CARS spectra under nonequilibrium conditions. Rovibrational distributions can be flexibly modeled and fitted for different use cases. The code currently implements CO2$$ \mathrm{C}{\mathrm{O}}_2 $$ and N2$$ {\mathrm{N}}_2 $$ molecules and is validated under ...
Christian A. Busch, Uwe Czarnetzki
wiley   +1 more source

Nonlocal effects on the shock-augmented ignition scheme of laser inertial fusion

Physical Review Research
Shock-augmented ignition (SAI) has recently been proposed as a viable approach to optimize the shock ignition scheme of laser fusion, which may substantially reduce laser power and intensity requirements and, as a result, greatly inhibit the growth of ...
W. Q. Yuan, Z. H. Zhao, S. P. Zhu, X. T. He, B. Qiao   +4 more
doaj   +1 more source

Harnessing Optical Limiting in Saturable Absorbers for Reconfigurable Spectral Engineering of Ultrafast Fiber Lasers

Laser &Photonics Reviews, EarlyView.
Optical limiting in a nanomaterial‐polymer saturable absorber is harnessed as a functional intracavity degree of freedom, where pump‐controlled photothermal loss continuously reshapes the gain spectrum of rare‐earth ions, enabling non‐mechanical spectral engineering in an ultrafast fiber laser.
Maolin Dai, Weitao Wang, Masahiro Nomura, Sze Yun Set, Shinji Yamashita   +4 more
wiley   +1 more source

Solderjet technology used to assemble a robust miniaturized solid-state laser

, 2014
A Soldering technique based on laser-induced Solderjet Bumping is used to assemble a miniaturized laser resonator in order to develop a completely adhesive-free device.
Gilaberte, Marta, Guilhot, Denis, Ferrando, Sara, Burkhardt, Thomas, Tünnermann, Andreas, Beckert, Erik, Eberhardt, Ramona, Burkhardt, Diana, Galan, Miguel, Kousar, Sumera, Montes, David, Hornaff, Marcel, Ribes, Pol   +12 more
core   +1 more source

Studying solid fuel ignition by CO2-laser

MATEC Web of Conferences, 2017
The ignition data on Siberian bituminous coal and lignite by a continuous CO2-laser were presented in current work. Measurements were carried out at the heat flux density range of 90–150 W/cm2 in air.
Korotkikh Alexander, Slyusarskiy Konstantin V., Sorokin Ivan V.   +2 more
doaj   +1 more source

Corrosion Performance of Steel and Zinc‐Based Materials in Diverse Unsaturated Soils: Insights From a 2‐Year Field Exposure

Materials and Corrosion, EarlyView.
The present study generated the corrosion performance of C‐steel, zinc, and galvanized steel in different global unsaturated soil environments for 2 years. Acceptable matching was observed between corrosion rates and identified corrosion products. To properly predict soil corrosion, the results showed that DIN 50929 should include a drainage‐capability
Abdelkader Meroufel, Dominique Thierry, Alexander Saul, Hanan Farhat, Brahim Aissa   +4 more
wiley   +1 more source