Results 91 to 100 of about 52,369 (293)

Dual‐Layer Living Hydrogel Enables On‐Demand Delivery of Phages and Probiotics for Synergistic Wound Infection Therapy

Advanced Functional Materials, EarlyView.
A dual‐layer living hydrogel, ProΦGel, integrates bacteriophages and probiotics for synergistic wound infection therapy. The outer gelatin‐based matrix releases phages on demand in response to P. aeruginosa infections, while inner alginate beads sustain probiotic delivery.
Siyuan Tao, Darine D'Adam, Anna Hu, Sixuan Zhang, Josua Roduner, Katharina Maniura‐Weber, Qun Ren   +6 more
wiley   +1 more source

General relativistic radiative transfer: formulation and emission from structured tori around black holes

, 2012
We construct a general relativistic radiative transfer (RT) formulation, applicable to particles with or without mass in astrophysical settings. Derived from first principles, the formulation is manifestly covariant.
Abramowicz, Abramowicz, Anderson, Baiotti, Balbus, Bao, Baschek, Beckwith, Beckwith, Beckwith, Blaes, Boyer, Carter, Chakrabarti, Cunningham, Dexter, Dolence, Eracleous, Fabian, Fabian, Fanton, Fuerst, Fuerst, Gerbal, Hawley, Horne, Hölzer, Johnston, K. Wu, Kojima, Kozlowski, Lynden-Bell, Marsh, Puchnarewicz, Reynolds, Rezzolla, S. V. Fuerst, Salpeter, Schnittman, Shakura, Shibata, Smak, Sochora, Soria, Stella, Strateva, Tanaka, Vincent, Wang, Wu, Wu, Wu, Z. Younsi, Zane, Čadež   +54 more
core   +1 more source

High‐Resolution and Real‐Time In Situ Generation of Cellular Spheroids by Laser‐Assisted Bioprinting for Guided Microvascularization

Advanced Functional Materials, EarlyView.
Micro‐injection laser‐assisted bioprinting enables ultrafast and precise patterning of small endothelial cell spheroids by injecting a highly concentrated single‐cell suspension into GelMA/ColMA hydrogels. In co‐culture with fibroblasts, controlled pre‐vasculogenic network formation is obtained at microscale resolution.
Charles Handschin, Katharina Wulz, Clotilde Jugie, Marie‐Laure Stachowicz, Shane Fennell, Aurélien Mazet, Malou Lea, Nathalie Dusserre, Jean‐Christophe Fricain, Hugo Oliveira   +9 more
wiley   +1 more source

Mass Accretion Processes in Young Stellar Objects: Role of Intense Flaring Activity

Acta Polytechnica CTU Proceedings, 2014
According to the magnetospheric accretion scenario, young low-mass stars are surrounded by circumstellar disks which they interact with through accretion of mass. The accretion builds up the star to its nal mass and is also believed to power the mass out
Salvatore Orlando, Fabio Reale, Giovanni Peres, Andrea Mignone   +3 more
doaj   +1 more source

Prospects for obtaining an r-process from Gamma Ray Burst Disk Winds

, 2004
We discuss the possibility that r-process nucleosynthesis may occur in the winds from gamma ray burst accretion disks. This can happen if the temperature of the disk is sufficiently high that electron antineutrinos are trapped as well as neutrinos.
Argast, DiMatteo, Freiburghaus, Fujimoto, Fuller, G.C. McLaughlin, Janka, MacFadyen, Maeda, McLaughlin, Meyer, Meyer, Meyer, Popham, Pruet, Pruet, Pruet, R. Surman, Rosswog, Rosswog, Rosswog, Sneden, Surman, Surman, Wasserburg, Woosley   +25 more
core   +1 more source

Sensorized Engineered Tissues with Built‐in Thermoregulation and Nutrient Supply

Advanced Functional Materials, EarlyView.
This work introduces a granular hydrogel‐based tissue engineering platform that includes a closed‐loop temperature control to maintain 37°C and sustainably releases nutrients, thereby enabling cells to retain a high viability even if stored at room temperature for up to 24 h.
Antonia Georgopoulou, Jakob Schreiner, Miriam Filippi, Aiste Balciunaite, Robert K. Katzschmann, Esther Amstad   +5 more
wiley   +1 more source

Constraining Binary Mergers in Active Galactic Nuclei Disks Using the Nonobservation of Lensed Gravitational Waves

The Astrophysical Journal Letters
The dense and dynamic environments within active galactic nuclei (AGN) accretion disks may serve as prolific birthplaces for binary black holes (BBHs) and one possible origin for some of the BBHs detected by gravitational-wave (GW) observatories. We show
Samson H. W. Leong, Justin Janquart, Aditya Kumar Sharma, Paul Martens, Parameswaran Ajith, Otto A. Hannuksela   +5 more
doaj   +1 more source

Starlight-driven flared-staircase geometry in radiation hydrodynamic models of protoplanetary disks

Astronomy & Astrophysics
Context. Protoplanetary disks observed in the millimeter continuum and scattered light show a variety of substructures. While embedded planets are a common explanation, various physical processes in the disk during the early planet formation phase might ...
Sudarshan Prakruti, Flock Mario, Ziampras Alexandros, Melon Fuksman David, Birnstiel Tilman   +4 more
doaj   +1 more source

A Venus-Mass Planet Orbiting a Brown Dwarf: Missing Link between Planets and Moons

, 2015
The co-planarity of solar-system planets led Kant to suggest that they formed from an accretion disk, and the discovery of hundreds of such disks around young stars as well as hundreds of co-planar planetary systems by the Kepler satellite demonstrate ...
Bozza, V., Choi, J. -Y., Gaudi, B. S., Gould, A., Han, C., Hwang, K. -H., Jung, Y. K., Kaspi, S., Kozlowski, S., Maoz, D., Mróz, P., Park, H., Pietrukowicz, P., Pietrzyński, G., Poleski, R., Shin, I. -G., Shvartzvald, Y., Skowron, J., Soszyński, I., Szymański, M. K., Udalski, A., Ulaczyk, K., Wyrzykowski, Ł.   +22 more
core   +1 more source

Accretion Disk Blobs

The Astrophysical Journal, 1999
Recent observations reveal a similar frequency dependence f-b in the X-rays from stellar black hole candidates and active galactic nuclei (AGNs). Several X-ray sources have a steeper decline of the power spectrum, b=1.5-1.7 at f>1.0 Hz. Data from EXOSAT have shown that AGNs have a universal slope of b~1.55.
openaire   +1 more source