Results 41 to 50 of about 105,694 (241)

SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE

Лëд и снег, 2015
During the 2010/11 season nearby the Vostok station the 56th Russian Antarctic Expedition has collected surface snow in a big amount from a 3 m deep pit using 15 220 L vol. containers (about 70 kg snow each).
E. S. Bulat, V. A. Celmovich, J.-R. Petit, I. M. Gindilis, S. A. Bulat   +4 more
doaj   +1 more source

Dust Formation in Very Massive Primordial Supernovae

, 2003
At redshift z>5 Type II supernovae (SNII) are the only known dust sources with evolutionary timescales shorter than the Hubble time. We extend the model of dust formation in the ejecta of SNII by Todini & Ferrara (2001) to investigate the same process in
A. Ferrara, Abel, Abel, Bertoldi, Bertoldi, Bromm, Bromm, Bromm, Carilli, Catchpole, Ciardi, Cimatti, Clayton, Clayton, Draine, Dunne, Dwek, Fan, Fryer, Gerardy, Gerardy, Granato, Heger, Hernandez, Hirashita, Hirashita, Hughes, Inoue, Kogut, Kozasa, Kozasa, Kumagai, Ledoux, McCray, Morgan, Moseley, Nakamura, Nakamura, Nozawa, Oh, Omont, Omukai, Omukai, Pettini, Pettini, Prochaska, R. Salvaterra, R. Schneider, Ripamonti, Salvaterra, Scannapieco, Schaye, Schneider, Schneider, Smail, Spergel, Steidel, Tielens, Todini, Umeda, Whittet, Wooden, Woosley   +62 more
core   +2 more sources

Arid1a Deficiency Drives Aristolochic Acid‐Induced Liver Tumorigenesis through Ctnnb1 Mutation and Defective Nucleotide Excision Repair

Advanced Science, EarlyView.
ARID1A is frequently mutated in both non‐malignant tissues and cancers, but its role in tumor development after exposure to genotoxic carcinogen remains unclear. It is found that aristolochic acid I accelerated liver tumorigenesis in ARID1A‐deficient context by impairing nucleotide excision repair and enhancing carcinogen bioactivation, revealing key ...
Lan Wang, Shi‐Hao Bai, Shu‐Jin Song, Xiao‐Li Zhang, Xue‐Ying Shang, Zhao‐Ning Lu, Xiao‐Fang Cui, Xin‐Le Zhu, Ze‐Guang Han   +8 more
wiley   +1 more source

AI‐Guided SERS Defines a Pan‐Cancer Diagnostic Biomarker

Advanced Science, EarlyView.
An AI‐enabled SERS platform integrates automated exosome enrichment with molecular fingerprinting to enable accurate early detection and differential diagnosis of ten common cancers. The system identifies exosomal dATP as a universal Raman biomarker, offering a scalable, noninvasive, and clinically translatable approach for precision oncology ...
Cai Zhang, Wen‐Hui Zhao, Duo Zuo, Tianxing Zhou, Wenjing Hou, Lingwei Wang, Shangheng Shi, Yang Yang, Yuanyuan Liu, Shao‐Kai Sun, Li Ren, Zhaoxiang Ye, Dingbin Liu, Dong Li, Xiaoyuan Chen, Jihui Hao   +15 more
wiley   +1 more source

The metals-to-dust ratio to very low metallicities using GRB and QSO absorbers; extremely rapid dust formation

, 2013
Among the key parameters defining the ISM of galaxies is the fraction of the metals that are locked up in dust: the metals-to-dust ratio. This ratio bears not only on the ISM and its evolution, but particularly on the origin of cosmic dust.
Watson, Darach, Zafar, Tayyaba
core   +3 more sources

Light Element Evolution and Cosmic Ray Energetics [PDF]

, 1999
Using cosmic-ray energetics as a discriminator, we investigate evolutionary models of LiBeB. We employ a Monte Carlo code which incorporates the delayed mixing into the ISM both of the synthesized Fe, due to its incorporation into high velocity dust ...
Benzion Kozlovsky, Bloemen H., Bykov A., Bykov A. M., Engelmann J. J., Epstein R. I., Ginzburg V. L., Higdon H. C., Kozasa T., Lijowski M., Lingenfelter R. E., Mihara K., Nissen P. E., Pagel B. E. J., Parizot E. M. G., Ramaty R., Ramaty R., Ramaty R., Reuven Ramaty, Richard E. Lingenfelter, Sean T. Scully, Shapiro M. M., Tsujimoto T., van den Bergh S., Yorke H.   +24 more
core   +2 more sources

On the Prospects for African Philosophy in Australia

Australian Journal of Social Issues, EarlyView.
ABSTRACT This paper grapples with the situation of people of African descent in Australia by working through the constitution of the body of academic philosophy in the country. It contends with the parochialism of the Australian philosophical community and the prospects for the cultivation of greater pluralism. Taking African philosophy as one possible
Bryan Mukandi
wiley   +1 more source

Dust at the Cosmic Dawn

Galaxies
Observations provided by the Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) have revealed a surprising abundance of galaxies at the “cosmic dawn” epoch, z>7. Some of them are found even in a more distant universe at z ≃ 14–16. Most of
Yuri A. Shchekinov, Biman B. Nath
doaj   +1 more source

Dust grain dynamics due to nonuniform and nonstationary high-frequency radiations in cold magnetoplasmas [PDF]

Annales Geophysicae, 2006
A general nonlinear theory for low-frequency electromagnetic field generation due to high-frequency nonuniform and nonstationary electromagnetic radiations in cold, uniform, multicomponent, dusty magnetoplasmas is developed.
A. K. Nekrasov, F. Z. Feygin
doaj   +1 more source

A Parameter Study of the Dust and Gas Temperature in a Field of Young Stars

, 2007
We model the thermal effect of young stars on their surrounding environment in order to understand clustered star formation. We take radiative heating of dust, dust-gas collisional heating, cosmic-ray heating, and molecular cooling into account.
Andrea Urban, Doty, Flower, Goldsmith, Hildebrand, Klessen, Krumholz, Lee, Martel, Mueller, Neal J. Evans, Nenkova, Ossenkopf, Press, Shirley, Steven D. Doty, van der Tak, van der Tak, Young, Young, Young   +20 more
core   +1 more source