Results 81 to 90 of about 154,367 (172)

Effective Gene Expression Prediction and Optimization from Protein Sequences

Advanced Science, Volume 12, Issue 8, February 24, 2025.
Understanding the correlation between protein sequences and expression is essential for many research and applications. This study introduced a new mathematical model to confirm the association between protein sequence and expression. The pre‐trained protein model, MP‐TRANS, is developed and fine‐tuned using transfer learning techniques to create ...
Tuoyu Liu, Yiyang Zhang, Yanjun Li, Guoshun Xu, Han Gao, Pengtao Wang, Tao Tu, Huiying Luo, Ningfeng Wu, Bin Yao, Bo Liu, Feifei Guan, Huoqing Huang, Jian Tian   +13 more
wiley   +1 more source

Identification and Analysis of Galactic Bars in DESI Legacy Imaging Surveys

The Astrophysical Journal
We present a comprehensive study of bar structures in the local universe using data from the DESI Legacy Imaging Surveys. Through isophotal analysis of 232,142 galaxies, we identify bars and classify them into strong and weak categories based on ...
Wenwen Wang, Zhimin Zhou
doaj   +1 more source

How Nested Bars Enhance, Modulate, and Are Destroyed by Gas Inflows

The Astrophysical Journal, 2023
Gas flows in the presence of two independently rotating nested bars remain not fully understood but are likely to play an important role in fueling the central black hole.
Zhi Li, Min Du, Victor P. Debattista, Juntai Shen, Hui Li, Jie Liu, Mark Vogelsberger, Angus Beane, Federico Marinacci, Laura V. Sales   +9 more
doaj   +1 more source

The population of barred galaxies in the local universe I. Detection and characterisation of bars [PDF]

, 2009
(Abridge) Bars are very common in the centre of the disc galaxies, and they drive the evolution of their structure. A volume-limited sample of 2106 disc galaxies extracted from the Sloan Digital Sky Survey Data Release 5 was studied to derive the bar fraction, length, and strength as a function of the morphology, size, local galaxy density, light ...
arxiv   +1 more source

Manifold spirals in barred galaxies with multiple pattern speeds [PDF]

A&A 636, A44 (2020), 2019
In the manifold theory of spiral structure in barred galaxies, the usual assumption is that the spirals rotate with the same pattern speed as the bar. Here we generalize the manifold theory under the assumption that the spirals rotate with different pattern speed than the bar.
arxiv   +1 more source

Cross Correlation Between Plasmaspheric Hiss Waves and Enhanced Radiation Levels at Aviation Altitudes

Space Weather, Volume 23, Issue 2, February 2025.
Abstract Enhanced radiation in the Earth's atmosphere can pose serious hazards to pilots, aircraft passengers, and commercial space travelers. Recent results have shown, statistically, that there is a strong correlation between dose rates observed by Automated Radiation Measurements for Aerospace Safety (ARMAS) instruments at aviation altitudes (>9 km)
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Rashmi Siddalingappa, Benjamin Hogan   +5 more
wiley   +1 more source

Impacts of Bar-driven Shear and Shocks on Star Formation

The Astrophysical Journal
Bars drive gas inflow. As the gas flows inward, shocks and shear occur along the bar dust lanes. Such shocks and shear can affect the star formation (SF) and change the gas properties.
Taehyun Kim, Dimitri A. Gadotti, Miguel Querejeta, Isabel Pérez, Almudena Zurita, Justus Neumann, Glenn van de Ven, Jairo Méndez-Abreu, Adriana de Lorenzo-Cáceres, Patricia Sánchez-Blázquez, Francesca Fragkoudi, Lucimara P. Martins, Luiz A. Silva-Lima, Woong-Tae Kim, Myeong-Gu Park   +14 more
doaj   +1 more source

Galactic Bar Resonances with Diffusion: An Analytic Model with Implications for Bar–Dark Matter Halo Dynamical Friction

The Astrophysical Journal, 2023
The secular evolution of disk galaxies is largely driven by resonances between the orbits of “particles” (stars or dark matter) and the rotation of non-axisymmetric features (spiral arms or a bar).
Chris Hamilton, Elizabeth A. Tolman, Lev Arzamasskiy, Vinícius N. Duarte   +3 more
doaj   +1 more source

Search for pre‐accretionary irradiation effects in calcium‐aluminum inclusions from the CV3 chondrite Allende

Meteoritics &Planetary Science, Volume 60, Issue 2, Page 247-272, February 2025.
Abstract Calcium‐aluminum‐rich inclusions (CAIs) are the first objects that formed in the solar accretion disk and therefore provide valuable insights into the evolution of the early solar system. A long‐standing question regarding this earliest formative period relates to the storage of CAIs in the 1–4 Myr time period between their formation and later
P. Ghaznavi, C. Burkhardt, F. L. H. Tissot, I. Leya   +3 more
wiley   +1 more source

Identification and characterization of DICER‐LIKE genes and their roles in Marchantia polymorpha development and salt stress response

The Plant Journal, Volume 121, Issue 3, February 2025.
SUMMARY DICER‐LIKE (DCL) proteins play a central role in plant small RNA (sRNA) biogenesis. The genome of the early land plant Marchantia polymorpha encodes four DCL proteins: MpDCL1a, MpDCL1b, MpDCL3, and MpDCL4. While MpDCL1a, MpDCL3 and MpDCL4 show high similarities to their orthologs in Physcomitrium patens and Arabidopsis thaliana, MpDCL1b shares ...
Erika Csicsely, Anja Oberender, Anastasia‐Styliani Georgiadou, Johanna Alz, Sebastian Kiel, Nora Gutsche, Sabine Zachgo, Jennifer Grünert, Andreas Klingl, Oguz Top, Wolfgang Frank   +10 more
wiley   +1 more source