Results 81 to 90 of about 341,826 (304)

Stellar tracers of the Cygnus Arm. II: A young open cluster in Cam OB3

, 2008
Cam OB3 is the only defined OB association believed to belong to the Outer Galactic Arm or Cygnus Arm. Very few members have been observed and the distance modulus to the association is not well known.
A. Marco, Benjamin, Cardelli, Crawford, Dame, Deharveng, Fernández, Georgelin, Haug, Hiltner, Humphreys, Humphreys, I. Negueruela, Kroupa, Leonard, Marco, Martins, Maíz-Apellániz, Moffat, Negueruela, Negueruela, Negueruela, Perry, Pflamm-Altenburg, Quillen, Rubin, Russeil, Skrutskie, Stetson, Vallée, Zdanavicius   +30 more
core   +1 more source

The HST Key Project on the Extragalactic Distance Scale XVII. The Cepheid Distance to NGC 4725 [PDF]

, 1998
The distance to NGC 4725 has been derived from Cepheid variables, as part of the Hubble Space Telescope Key Project on the Extragalactic Distance Scale.
Abhijit Saha, Anne M. Turner, Barry F. Madore, Bottinelli L., Brad K. Gibson, Charles F. Prosser, Daniel D. Kelson, Fabio Bresolin, Garth D. Illingworth, Holland C. Ford, Jeremy R. Mould, John A. Graham, John G. Hoessel, John P. Huchra, Kim M. Sebo, Laura Ferrarese, Lucas M. Macri, Mingsheng Han, Nancy A. Silbermann, Patat F., Paul Harding, Peter B. Stetson, Randy L. Phelps, Robert C. Kennicutt, Jr., Shaun M. G. Hughes, Shoko Sakai, Stetson P. B., Stetson P. B., Turner A., Wendy L. Freedman, Wevers B. M. H. R.   +30 more
core   +2 more sources

A combined XFEM and RSM approach for predicting crack propagation in nearby buildings during foundation pit construction

Frontiers in Built Environment
This paper addresses the issue of crack expansion in adjacent buildings caused by foundation pit construction and develops a predictive model using the response surface method.
Zhaofeng Wu, Tiancheng Wang, Yan Kuang, Zhiliang Zhu, Fenglong Xiao, Pengliang Yang   +5 more
doaj   +1 more source

Numerical Studies of Influencing Factors on the Homogeneity of the Powder Mixture during the Powder Spreading Process of Powder Bed Fusion–Laser Beam/Metal

Advanced Engineering Materials, EarlyView.
AISI 304L stainless steel powder is mixed with silicon nitride (Si3N4) powder and processed by PBF‐LB/M, allowing partial retention of Si3N4. The numerical approach effectively predicts the Si3N4 powder homogeneity and N content distribution on the powder bed. Recent studies have focused on the alloying of nitrogen (N) in high‐alloy stainless steels by
Yuanbin Deng, Ziping Sang, Jiali Zhang, Felix Radtke, Louis Becker, Simone Herzog, Sebastian Weber, Christoph Broeckmann   +7 more
wiley   +1 more source

The Hubble Space Telescope Extragalactic Distance Scale Key Project. X. The Cepheid Distance to NGC 7331

, 1998
The distance to NGC 7331 has been derived from Cepheid variables observed with HST/WFPC2, as part of the Extragalactic Distance Scale Key Project. Multi-epoch exposures in F555W (V) and F814W (I), with photometry derived independently from DoPHOT and ...
Abhijit Saha, Balkowski C., Barry F. Madore, Begeman K. G., Bottinelli L., Brad K. Gibson, Garcia A. M., Garth D. Illingworth, Holland Ford, Jeremy R. Mould, John A. Graham, John Hoessel, John Huchra, Laura Ferrarese, Marcelin M., Martin W. L., Mingsheng Han, Nancy A. Silbermann, Osman A. M. I., Paul Harding, Peter B. Stetson, Randy Phelps, Rawson D. M., Robert C. Kennicutt, Jr., Robert Hill, Sasselov D. D., Sersic J. L., Shaun M. G. Hughes, Shoko Sakai, Stift M. J., van den Bergh S., Wendy L. Freedman   +31 more
core   +1 more source

Pulsational M_V versus [Fe/H] relation(s) for globular cluster RR Lyrae variables [PDF]

, 2000
We use the results from recent computations of updated non-linear convective pulsating models to constrain the distance modulus of Galactic globular clusters through the observed periods of first overtone RRc pulsators. The resulting relation between the
Caputo, F., Castellani, V., Marconi, M., Ripepi, V.   +3 more
core   +3 more sources

Soft‐Layered Composites with Wrinkling‐Activated Multi‐Linear Elastic Behavior, Stress Mitigation, and Enhanced Strain Energy Storage

Advanced Engineering Materials, EarlyView.
In this study, exciting new bi‐/multi‐linear elastic behavior of soft elastic composites that accompany the activation of wrinkling in the embedded interfacial layers is analyzed. The new features and performance of these composite materials, including dramatic enhancements in energy storage, can be tailored by the concentration of interfacial layers ...
Narges Kaynia, Nicholas Xuanlai Fang, Mary C. Boyce   +2 more
wiley   +1 more source

Red Giants in the Halo of the S0 Galaxy NGC 3115: A Distance and a Bimodal Metallicity Distribution [PDF]

, 1996
Using the Hubble Space Telescope, we resolve the red giant branch in the halo of the S0 galaxy NGC 3115. We measure magnitudes and $(V-I)$ colours for stars down to 1.5 magnitudes below the tip of the red giant branch.
Elson, Rebecca A. W.
core   +3 more sources

Performance Improvement of Raman Distributed Temperature System by Using Noise Suppression

Photonic Sensors, 2017
In Raman distributed temperature system, the key factor for performance improvement is noise suppression, which seriously affects the sensing distance and temperature accuracy. Therefore, we propose and experimentally demonstrate dynamic noise difference
Jian Li, Yunting Li, Mingjiang Zhang, Yi Liu, Jianzhong Zhang, Baoqiang Yan, Dong Wang, Baoquan Jin   +7 more
doaj   +1 more source

Development of Ternary Magnesium Alloys for Laser Powder Bed Fusion: Optimizing Oxide Layer Thickness

Advanced Engineering Materials, EarlyView.
Additive manufacturing of magnesium alloys by laser is difficult because the melting point of the oxide layer is much higher than the evaporation temperature of the metal underneath. Making the oxide layer thinner can solve this problem. Alloying magnesium with strontium makes the oxide layer thinner, especially at 0.5 wt%.
Elmar Jonas Breitbach, Stefan Julmi, Sabine Behrens, Tatiana Blank, Arvid Abel, Nicole Emminghaus, Ludger Overmeyer, Christian Klose, Hans Jürgen Maier   +8 more
wiley   +1 more source