Results 41 to 50 of about 150,987 (290)

Isotopic 32S/33S ratio as a diagnostic of presolar grains from novae

Physics Letters B, 2014
Measurements of sulphur isotopes in presolar grains can help to identify the astrophysical sites in which these grains were formed. A more precise thermonuclear rate of the 33S(p,γ)34Cl reaction is required, however, to assess the diagnostic ability of ...
A. Parikh, K. Wimmer, T. Faestermann, R. Hertenberger, J. José, H.-F. Wirth, C. Hinke, R. Krücken, D. Seiler, K. Steiger, K. Straub   +10 more
doaj   +1 more source

Implementing Climate Change Adaptation Policies Across Scales: Challenges for Knowledge Coproduction in Andean Mountain Socio-ecosystems

Mountain Research and Development, 2022
The Andean region presents specific challenges related to its globally important natural heritage, the broad range of pressures on landscapes and ecosystems that accentuate the effects of climate change (CC), and a great diversity of institutional ...
Emilie Dupuits, Luis Daniel Llambí, Manuel Peralvo   +2 more
doaj   +1 more source

Closed G$_2$-structures on non-solvable Lie groups [PDF]

, 2019
We investigate the existence of left-invariant closed G$_2$-structures on seven-dimensional non-solvable Lie groups, providing the first examples of this type. When the Lie algebra has trivial Levi decomposition, we show that such a structure exists only
Fino, Anna, Raffero, Alberto
core   +2 more sources

On the Non-Coherent Wideband Multipath Fading Relay Channel [PDF]

, 2010
We investigate the multipath fading relay channel in the limit of a large bandwidth, and in the non-coherent setting, where the channel state is unknown to all terminals, including the relay and the destination.
Fawaz, Nadia, Medard, Muriel
core   +1 more source

p73α1, an Isoform of the p73 Tumor Suppressor, Modulates Lipid Metabolism and Cancer Cell Growth via Stearoyl-CoA Desaturase-1

Cells, 2022
Altered lipid metabolism is a hallmark of cancer. p73, a p53 family member, regulates cellular processes and is expressed as multiple isoforms. However, the role of p73 in regulating lipid metabolism is not well-characterized.
Zachary Rabow, Kyra Laubach, Xiangmudong Kong, Tong Shen, Shakur Mohibi, Jin Zhang, Oliver Fiehn, Xinbin Chen   +7 more
doaj   +1 more source

Structural basis of the monkeypox virus mRNA cap N7 methyltransferase complex

Emerging Microbes and Infections
The global outbreak of Mpox, caused by the monkeypox virus (MPXV), has attracted international attention and become another major infectious disease event after COVID-19.
Anke Chen, Ning Fang, Zhifei Zhang, Yiqing Wen, Yajie Shen, Yanjie Zhang, Lu Zhang, Guoping Zhao, Jin Ding, Jixi Li   +9 more
doaj   +1 more source

Intersubband decay of 1-D exciton resonances in carbon nanotubes

, 2007
We have studied intersubband decay of E22 excitons in semiconducting carbon nanotubes experimentally and theoretically. Photoluminescence excitation line widths of semiconducting nanotubes with chiral indicess (n, m) can be mapped onto a connectivity ...
Arnold K., Arnold M. S., Bachilo S. M., Blase X., Capaz R. B., Crochet J., Freitag M., Inoue T., Javey A., Jiang J., Kane C. L., Lebedkin S., Martel R., Marty L., Maultzsch J., Misewich J. A., Mortimer I. B., O'Connell M. J., Perebeinos V., Perebeinos V., Perebeinos V., Reich S., Shan W., Souza A. G., Spataru C. D., Su W. P., Su W. P., Tans S. J., Wang F.   +28 more
core   +1 more source

Casimir interaction between two concentric cylinders: exact versus semiclassical results [PDF]

, 2002
The Casimir interaction between two perfectly conducting, infinite, concentric cylinders is computed using a semiclassical approximation that takes into account families of classical periodic orbits that reflect off both cylinders.
A.A. Saharian, B.V. Derjaguin, B.V. Derjaguin, B.W. Harris, Francisco D. Mazzitelli, G. Bressi, G. Plunien, H. Weyl, H.B. Chan, H.B. Chan, H.B.G. Casimir, J. Blocki, Javier von Stecher, K.A. Milton, L.L. DeRaad, Jr., M. Bordag, M. Schaden, M. Schaden, M.E. Bowers, M.V. Berry, María J. Sánchez, Norberto N. Scoccola, P. Gosdzinsky, R. Balian, R. Balian, R. Balian, R. Balian, R. Balian, S.K. Lamoreaux, T.H. Boyer, U. Mohideen, V.V. Nesterenko   +31 more
core   +2 more sources

Phase separation is regulated by post-translational modifications and participates in the developments of human diseases

Heliyon
Liquid-liquid phase separation (LLPS) of intracellular proteins has emerged as a hot research topic in recent years. Membrane-less and liquid-like condensates provide dense spaces that ensure cells to high efficiently regulate genes transcription and ...
Weibo Zhang, Zhengfeng Li, Xianju Wang, Ting Sun   +3 more
doaj   +1 more source

Induction of Early B Cell Factor (EBF) and Multiple B Lineage Genes by the Basic Helix-Loop-Helix Transcription Factor E12

Journal of Experimental Medicine, 1998
The transcription factors encoded by the E2A and early B cell factor (EBF) genes are required for the proper development of B lymphocytes. However, the absence of B lineage cells in E2A- and EBF-deficient mice has made it difficult to determine the ...
B. Kee, C. Murre
semanticscholar   +1 more source