Results 31 to 40 of about 135,058 (169)

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

Advanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

Growth of Massive Molecular Cloud Filament by Accretion Flows. I. Slow-shock Instability versus Ambipolar Diffusion

The Astrophysical Journal
The Herschel Gould Belt Survey showed that stars form in dense filaments in nearby molecular clouds. Recent studies suggest that massive filaments are bound by the slow shocks caused by accretion flows onto the filaments.
Daisei Abe, Tsuyoshi Inoue, Shu-ichiro Inutsuka   +2 more
doaj   +1 more source

The Cassiopeia Filament: A Blown Spur of the Local Arm

The Astronomical Journal, 2022
We present wide-field and high-sensitivity CO(1–0) molecular line observations toward the Cassiopeia region, using the 13.7 m millimeter telescope of the Purple Mountain Observatory.
Xuepeng Chen, Li Sun, Jiancheng Feng, Shiyu Zhang, Weihua Guo, Xiaoyun Xu, Yang Su, Yan Sun, Shaobo Zhang, Xin Zhou, Zhiwei Chen, Qing-Zeng Yan, Miaomiao Zhang, Min Fang, Ji Yang   +14 more
doaj   +1 more source

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

OGHReS: Large-scale filaments in the outer Galaxy [PDF]

, 2021
Filaments are a ubiquitous morphological feature of the molecular interstellar medium and are identified as sites of star formation. In recent years, more than 100 large-scale filaments (with a length > 10 pc) have been observed in the inner Milky Way ...
J. Brand, Mazumdar, P., Lee, M.-Y., K. M. Menten, Mattern, M., F. Wyrowski, F. Schuller, Brand, J., BRAND, JAN, Colombo, D., Urquhart, J., D. Colombo, S. Leurini, Wyrowski,F., König, C., Leurini, Silvia, Urquhart, J. S., J. S. Urquhart, M. Mattern, Menten, K. M., Lee, M. -Y., Wyrowski, F., C. König, M.-Y. Lee, Leurini, S., Lee, M., Menten, K., P. Mazumdar, Schuller, F., M. Wienen, Wienen, M.   +30 more
core   +1 more source

TRAO Survey of Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO-FUNS). III. Filaments and Dense Cores in the NGC 2068 and NGC 2071 Regions of Orion B

The Astrophysical Journal, 2023
We present the results of molecular line observations performed toward the NGC 2068 and NGC 2071 regions of the Orion B cloud as the TRAO-FUNS project to study the roles of the filamentary structure in the formation of dense cores and stars in the clouds.
Hyunju Yoo, Chang Won Lee, Eun Jung Chung, Shinyoung Kim, Mario Tafalla, Paola Caselli, Philip C. Myers, Kyoung Hee Kim, Tie Liu, Woojin Kwon, Archana Soam, Jongsoo Kim   +11 more
doaj   +1 more source

GGR Handbook of Rock and Mineral Analysis Chapter 16 Nano‐Imaging for Advanced X‐Ray Fluorescence and Absorption Spectroscopy Applications

Geostandards and Geoanalytical Research, Volume 49, Issue 3, Page 495-533, September 2025.
Key Points Synchrotron nano‐imaging is necessary to locate elemental nanophases. Trace metal quantification requires high sensitivity nano‐XRF. Trace metal speciation relies on nano‐XANES using nano‐XRF. This chapter (Nano‐Imaging for Advanced X‐ray Fluorescence and Absorption Spectroscopy Applications) is a contribution to the Geostandards and ...
Alexandre S. Simionovici, Laurence Lemelle   +1 more
wiley   +1 more source

SDC13 infrared dark clouds: Longitudinally collapsing filaments? [PDF]

, 2013
International audienceFormation of stars is now believed to be tightly linked to the dynamical evolution of interstellar filaments in which they form.
Williams, J., {de Villiers}, H, {Williams}, J, {Olguin}, F A, de Villiers, H., D. Arzoumanian, G. A. Fuller, Peretto, Nicolas, H. de Villiers, Arzoumanian, D., Peretto, N., Bardeau, S., Fuller, Gary; id_orcid, Roeck, B. R., {Duarte Puertas}, S, J. Williams, {Bardeau}, S, B. R. Röck, C. Lenfestey, Fuller, G. A., S. Bardeau, Lenfestey, C., Röck, B. R., {Fuller}, G A, Li, G. -X., F. A. Olguin, Duarte Puertas, S., Olguin, F. A., G.-X. Li, {Lenfestey}, C, {Röck}, B R, André, Ph., V. M. Rivilla, {Li}, G-X, Guzman Fernandez, J. P., N. Peretto, {Guzman Fernandez}, J P, J. P. Guzman Fernandez, Ph. André, Rivilla, V. M., Li, G.-X., {Rivilla}, V M, {André}, P, {Arzoumanian}, D, {Peretto}, N, S. Duarte Puertas, Villiers, H. de, Rivilla, Víctor M., Williams, F.   +48 more
core   +1 more source

When Magnetic Fields Sculpt the Sky: The Riegel–Crutcher Cloud in Optical Polarization

The Astrophysical Journal
Filamentary structures are ubiquitous in the interstellar medium, yet the extent to which magnetic fields influence the morphology of cold atomic gas remains an open question.
Gabriel A. P. Franco, Mayara Gomides, Zhi-Yun Li, Fábio P. Santos, Farideh S. Tabatabaei   +4 more
doaj   +1 more source

H i Self-absorption toward the Cygnus X North: From Atomic Filament to Molecular Filament

The Astrophysical Journal Letters, 2023
Using the H i self-absorption data from the Five-hundred-meter Aperture Spherical radio Telescope, we perform a study of the cold atomic gas in the Cygnus X North region.
Chong Li, Keping Qiu, Di Li, Hongchi Wang, Yue Cao, Junhao Liu, Yuehui Ma, Chenglin Yang   +7 more
doaj   +1 more source