Results 71 to 80 of about 241,989 (335)

Numerical Model and Experimental Validation of Composite Metal Foam in Protecting Carbon Steel Against Puncture

Advanced Engineering Materials, EarlyView.
The puncture prevention and energy absorption performance of composite metal foam (CMF) are studied experimentally and numerically for hazardous materials transportation protection. The numerical model implementing air within the CMF (nonhomogeneous model using fluid cavity technique) predicts puncture more accurately compared to the homogeneous CMF ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Metal–Metal Bonding

, 2013
This chapter deals with the electronic structure of metal-metal bonds in molecular systems, a diverse topic that now spans almost the entire periodic table. The field is most often associated with strong multiple bonds such as the iconic quadruple bond in [Re2Cl8]2-, and the recently discovered ultra-short Cr-Cr quintuple bonds provide a remarkable ...
openaire   +2 more sources

Liquid Crystal Elastomers Under Confinement: A Review of Template‐Based Fabrication and Applications

Advanced Engineering Materials, EarlyView.
Template‐assisted confinement offers powerful ways to control the alignment, structure, and function of liquid crystal elastomers. This review highlights several templating strategies and details how geometry and interfaces shape material responses.
Meng Zhang, Le Yang, Xinyi Ding, James Phillip Scarbrough, Tushar Narayan Singh, Yuxing Yao, Shucong Li, Xiaoguang Wang   +7 more
wiley   +1 more source

Photometric Metallicity Calibration with SDSS and SCUSS and its Application to distant stars in the South Galactic Cap

, 2015
Based on SDSS g, r and SCUSS (South Galactic Cap of u-band Sky Survey) $u$ photometry, we develop a photometric calibration for estimating the stellar metallicity from $u-g$ and $g-r$ colors by using the SDSS spectra of 32,542 F- and G-type main sequence
Du, Cuihua, Fan, Xiaohui, Fan, Zhou, Gu, Jiayin, Jia, Yunpeng, Jiang, Zhaoji, Jing, Yingjie, Jing, Yipeng, Lesser, Michael, Ma, Jun, Nie, Jundan, Peng, Xiyan, Shen, Shiyin, Wang, Jiali, Wu, Zhenyu, Zhang, Tianmeng, Zhou, Xu, Zhou, Zhimin, Zou, Hu   +18 more
core   +1 more source

A fundamental relation between mass, SFR and metallicity in local and high redshift galaxies [PDF]

, 2010
We show that the mass-metallicity relation observed in the local universe is due to a more general relation between stellar mass M*, gas-phase metallicity and SFR.
A. Gnerucci, A. Marconi, Abazajian, Agertz, Bouché, Bournaud, Brinchmann, Brinchmann, Brooks, Brooks, Calura, Calzetti, Chabrier, Charlot, Cowie, Cowie, Cresci, Daddi, Davé, Davé, Dayal, De Rossi, Dekel, Dekel, Edmunds, Ellison, Epinat, Erb, Erb, F. Mannucci, Finlator, Förster Schreiber, G. Cresci, Garnett, Gavazzi, Gnedin, Hainline, Hayashi, Kauffmann, Kauffmann, Kennicutt, Kennicutt, Kewley, Kewley, Kobayashi, Kroupa, Köppen, Lee, Lehnert, Lehnert, Lequeux, Liu, Magrini, Maiolino, Mannucci, McClure, Michel-Dansac, Moustakas, Murray, Nagao, Oppenheimer, Panter, Peeples, Pilyugin, Pérez-González, Pérez-Montero, R. Maiolino, Rodrigues, Rupke, Rupke, Salim, Salvaterra, Savaglio, Scannapieco, Schiminovich, Shapley, Silk, Somerville, Spitoni, Tassis, Tremonti, Veilleux, Verley, Wright, Wright   +84 more
core   +1 more source

Production of Metallic Foam Precursors Using Current‐Activated Pressure‐Assisted Densification

Advanced Engineering Materials, EarlyView.
A powder compaction metallurgical method, known as current‐activated pressure‐assisted densification, is applied to enhance the compaction of metal foam precursors. This method improves precursor quality by achieving higher density, lower electrical resistivity, and more uniform pore nucleation in the resulting foams, reducing energy consumption and ...
Tillmann Robert Neu, Paul Hans Kamm, Francisco García‐Moreno   +2 more
wiley   +1 more source

SDSS-IV MaNGA: Spatial Evolution of Gas-phase Metallicity Changes Induced by Galaxy Interactions

The Astrophysical Journal
Gas-phase metallicity in interacting and merging galaxies offers key insights into their star formation processes and evolutionary histories. This study investigates the spatial evolution of gas-phase metallicity (i.e., oxygen abundance, 12 + log(O/H ...
Hsi-An Pan, Lihwai Lin, Sebastián F. Sánchez, Jorge K. Barrera-Ballesteros, Bau-Ching Hsieh   +4 more
doaj   +1 more source

Precise Empirical Determination of Metallicity Dependence of Near-infrared Period–Luminosity Relations for RR Lyrae Variables

The Astrophysical Journal Letters, 2023
RR Lyrae variables are excellent Population II distance indicators thanks to their well-defined period–luminosity relations (PLRs) at infrared wavelengths.
Anupam Bhardwaj, Marcella Marconi, Marina Rejkuba, Richard de Grijs, Harinder P. Singh, Vittorio F. Braga, Shashi Kanbur, Chow-Choong Ngeow, Vincenzo Ripepi, Giuseppe Bono, Giulia De Somma, Massimo Dall’Ora   +11 more
doaj   +1 more source

The Photometric Metallicity and Carbon Distributions of the Milky Way’s Halo and Solar Neighborhood from S-PLUS Observations of SDSS Stripe 82 [PDF]

, 2021
Devin D. Whitten, Vinicius M. Placco, Timothy C. Beers, Deokkeun An, Young Sun Lee, F. Almeida-Fernandes, F. R. Herpich, S. Daflon, C. E. Barbosa, Hélio D. Perottoni, Silvia Rossi, P. B. Tissera, Jinmi Yoon, Kris Youakim, W. Schoenell, T. Ribeiro, A. Kanaan   +16 more
openalex   +1 more source

Luminous Blue Variable Stars In The Two Extremely Metal-Deficient Blue Compact Dwarf Galaxies DDO 68 and PHL 293B

, 2008
We present photometric and spectroscopic observations of two luminous blue variable (LBV) stars in two extremely metal-deficient blue compact dwarf (BCD) galaxies, DDO 68 with 12+logO/H = 7.15 and PHL 293B with 12+logO/H = 7.72.
Conti, Crowther, Drissen, Guseva, Izotov, Izotov, Izotov, Izotov, Legrand, Massey, Petit, Pustilnik, Smith, Thuan, Trinh X. Thuan, Walborn, Yuri I. Izotov   +16 more
core   +1 more source