Results 101 to 110 of about 7,888 (222)

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

C13‐Deacylase from Nocardioides albus Resp. Streptomyces sp., Catalyzing Side Chain Hydrolysis on the Taxane Core

ChemCatChem, Volume 17, Issue 15, August 7, 2025.
An enzyme that has been identified and characterized as capable of hydrolyzing paclitaxel (Taxol), a key anticancer drug derived from Pacific yew (Taxus brevifolia) has been identified. Molecular docking (MD) simulations map the catalytic triad and critical residues that drive substrate‐enzyme interactions. The findings indicate the catalytic potential
Jinfen Su, Eugen Schell, Thomas Heine, Marion B. Ansorge‐Schumacher   +3 more
wiley   +1 more source

The impact of bars on the mid-infrared dust emission of spiral galaxies: global and circumnuclear properties [PDF]

, 2001
We study the mid-infrared properties of a sample of 69 nearby spiral galaxies, selected to avoid Seyfert activity contributing a significant fraction of the central energetics, or strong tidal interaction, and to have normal infrared luminosities.
A. Bosma, Aalto, Aaronson, Aguerri, Allamandola, Andreani, Appleton, Arsenault, Ashby, Athanassoula, Athanassoula, Bajaja, Bonatto, Borghesi, Boselli, Boselli, Boulanger, Boulanger, Braine, Brooks, Buta, C. Bonoli, Cayatte, Cayatte, Cesarsky, Cesarsky, Cesarsky, Chamaraux, Chamaraux, Claussen, Cohen, Combes, Combes, Condon, Contursi, Dale, Dale, de Grijp, Devereux, Diaz, Duley, Désert, Elfhag, Eskridge, Friedli, Garcia, García-Barreto, García-Barreto, Genzel, Giard, Giovanardi, Guiderdoni, Gérin, H. Roussel, Handa, Haynes, Haynes, Heckman, Helfer, Helou, Helou, Ho, Horellou, Huang, Huchtmeier, Huchtmeier, Huntley, Isobe, Jörsäter, Kamphuis, Keel, Keel, Kenney, Kennicutt, Koopmann, Kotilainen, Krumm, Krügel, Kutner, L. Vigroux, Laurent, Lindblad, Léger, M. Sauvage, Maia, Maia, Maiolino, Maoz, Martin, Martin, Martinet, Mathewson, Mauersberger, McLeod, Mirabel, Mundell, P. Gallais, P. Mazzei, Papoular, Pence, Phillips, Regan, Regan, Reynaud, Rice, Richter, Roche, Rogstad, Roth, Roussel, Ryder, S. Madden, Sage, Sakamoto, Sakata, Sancisi, Sanders, Sanders, Sandqvist, Seigar, Sellgren, Sheth, Shioya, Soifer, Spoon, Strong, Sturm, T. Hawarden, Taniguchi, Telesco, Theureau, Thuan, Tubbs, Uchida, van den Bergh, Veilleux, Veilleux, Vila-Vilaró, Véron-Cetty, Whitworth, Wiklind, Wiklind, Young   +142 more
core   +2 more sources

Analysis, Testing, and Design of a UHF and HF Peer‐to‐Peer Communication System for the Europan Cryosphere

Earth and Space Science, Volume 12, Issue 8, August 2025.
Abstract This study presents a validated design of a dual‐band wireless relay system of “pucks” for through‐ice communication between a cryobot and a surface lander during a future exploration of the Europan cryosphere. The design of a terrestrial demonstration system and the results of a 103 m through‐ice system test in a relevant environment near ...
Jake Sahli, Albin J. Gasiewski, William C. Stone, Brian Pease, Veronica Guerrero, Vickie Siegel, Justin Smith   +6 more
wiley   +1 more source

Surface photometry of barred spiral galaxies

The Astrophysical Journal, 1990
La photometrie de surface detaillee a ete realisee pour 6 galaxies spirales barrees de premier type en utilisant des plaques photographiques a haute resolution. Les observations et les reductions des donnees sont presentees et les profils azimutaux de la luminosite sont extraits et analyses.
Ken-Ichi Wakamatsu, Masaru Hamabe, Kouji Ohta   +2 more
openaire   +2 more sources

Luminosities of Barred and Unbarred S0 Galaxies

, 2012
Lenticular galaxies with M_B < -21.5 are almost exclusively unbarred, whereas both barred and unbarred objects occur at fainter luminosity levels. This effect is observed both for objects classified in blue light, and for those that were classified in ...
Buta, de Vaucouleurs, de Vaucouleurs, Hubble, Sales, Sandage, Sandage, Sandage, Sidney van den Bergh, van den Bergh   +9 more
core   +1 more source

Do Strong Bars Exhibit Strong Noncircular Motions?

The Astrophysical Journal
Galactic bars induce characteristic motions deviating from pure circular rotation, known as noncircular motions. As bars are nonaxisymmetric structures, stronger bars are expected to show stronger noncircular motions.
Taehyun Kim, Dimitri A. Gadotti, Yun Hee Lee, Carlos López-Cobá, Woong-Tae Kim, Minjin Kim, Myeong-gu Park   +6 more
doaj   +1 more source

Age‐Associated Decline in Autophagy Pathways in the Retinal Pigment Epithelium and Protective Effects of Topical Trehalose in Light‐Induced Outer Retinal Degeneration in Mice

Aging Cell, Volume 24, Issue 7, July 2025.
Transcriptomic analyses reveal an age‐related decline in autophagy pathways in RPE/choroid. These pathways remain unchanged in early AMD but become bidirectionally dysregulated in later stages, along with increased RPE loss. Pre‐treatment with trehalose eyedrops enhances RPE autophagy flux and prevents light‐induced outer retinal degeneration in mice ...
Katherine Cox, Gongyu Shi, Neve Read, Mohamed T. Patel, Kepeng Ou, Zijia Liu, Jiahui Wu, Suci Cendanawati, Jenna Le Brun Powell, Pola Goldberg Oppenheimer, Lisa J. Hill, Lindsay B. Nicholson, Andrew D. Dick, Jian Liu   +13 more
wiley   +1 more source

Dissecting Bar-induced Stellar Kinematics in Disk Galaxies: The Bisymmetric Model and Rotation Curve Modifications

The Astrophysical Journal
We analyze bars formed in N -body simulations to investigate two key aspects of stellar kinematic structure of barred galaxies: the angular distributions of the radial and azimuthal components of stellar velocities, and the impact of bars on rotation ...
Seungwon Baek, Woong-Tae Kim, Dajeong Jang, Taehyun Kim   +3 more
doaj   +1 more source

Plasticity of the heart in response to changes in physical activity

The Journal of Physiology, Volume 603, Issue 13, Page 3665-3677, 1 July 2025.
Abstract figure legend The heart adapts to changes in physical activity, with inactivity (e.g. bed rest or spaceflight) causing cardiac atrophy and ventricular stiffening, and endurance exercise training leading to eccentric hypertrophy and improved ventricular compliance.
Eric T. Hedge, Tiffany L. Brazile, Richard L. Hughson, Benjamin D. Levine   +3 more
wiley   +1 more source