Results 41 to 50 of about 392,313 (282)

Intermediate mass stars: updated models [PDF]

, 1999
A new set of stellar models in the mass range 1.2 to 9 $M_{\odot}$ is presented. The adopted chemical compositions cover the typical galactic values, namely $0.0001 \le Z \le 0.02$ and $0.23 \le Y \le 0.28$.
Alessandro Chieffi, Alongi M., Alongi M., Bertelli G., Bressan A., Bressan A., Carraro G., Castellani V., Chieffi A., Cloutmann L. D., Doom C., Doom C., Groenewegen M. A. T., Iben I. J., Inma Dominguez, Kippenhahn R., Maeder A., Maeder A., Maeder A., Maeder A., Maeder A., Marco Limongi, Matraka B., Mermilliod J.-C., Oscar Straniero, Paczynski B., Paczynski B., Paczynski B., Renzini A., Schaller G., Schroder K.-P., Stothers R. B., Stothers R. B., Trimble V., Von Hippel T., Weidemann V., Xion D. R., Xion D. R.   +37 more
core   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Influence of prescribed burning on biological attributes of the soil in natural pasture from Pantanal

Biodiversidade Brasileira, 2020
Natural pastures are an indispensable natural resource for the Pantanal. They form the basis of the feeding of beef cattle and herbivores, being renewed by the alternation of flood and drought period. Controlled burning, as a pasture management practice,
Izabelli dos Santos Ribeiro, Gabriel Paganini Faggioni, Guilherme Miranda Barbosa, Evaldo Luís Cardoso, Sandra Aparecida Santos   +4 more
doaj   +3 more sources

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

Evaluation of burning rate in ECSP based on the voltage, pressure and initial temperature

FirePhysChem
Electrically controlled solid propellants (ECSP) have attracted extensive attention due to the tunable burning rate. The burning rate of ECSP determines the applying background of propellants and rocket engine structural design.
Zhenguo Pang, Kaitian Zhu, Lingzhi Zhang, Jiacheng Li, Bingning Jin, Quan Zhu, Yutao Wang   +6 more
doaj   +1 more source

Burning surface formation mechanism of laser-controlled 5-aminotetrazole propellant

Defence Technology, 2023
As an innovative propulsion technique, combustion mechanism of laser-augmented chemical propulsion has still to be ascertained. Benefiting from high nitrogen content and thermal stability, 5-aminotetrazole is a suitable ingredient for LACP.
Nian-bai He, Rui-qi Shen, Luigi T. DeLuca, Li-zhi Wu, Wei Zhang, Ying-hua Ye, Yue-ting Wang   +6 more
doaj   +1 more source

Sustainable Synthesis of Bio‐Based Magnetic and Conductive Wood for Electromagnetic Interference Shielding Applications

Advanced Engineering Materials, EarlyView.
A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya, Majed Amini, Mohammad Arjmand, Earl Johan Foster   +3 more
wiley   +1 more source

Fire regime of the Kruger National Park for the period 1980 -1992

Koedoe: African Protected Area Conservation and Science, 1993
Fire regime refers to the type and intensity of fire and the season and frequency of burning. In the Kruger National Park it varies according to the source of ignition of the fires. Since 1985 the different ignition sources have been controlled bums (47),
W.S.W. Trollope
doaj   +1 more source

Using electric fields for pulse compression and group velocity control

, 2016
In this article, we experimentally demonstrate a new way of controlling the group velocity of an optical pulse by using a combination of spectral hole burning, slow light effect and linear Stark effect in a rare-earth-ion-doped crystal.
Kinos, Adam, Kröll, Stefan, Li, Qian, Rippe, Lars, Thuresson, Axel   +4 more
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source