Results 151 to 160 of about 584,793 (309)

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS)

Astronomy & Astrophysics
Context. Debris disks – collisionally sustained belts of dust and sometimes gas around main sequence stars – are remnants of planet formation processes and are found in systems ≳10 Myr old.
Zawadzki B., Fehr A., Hughes A. M., Mansell E., Kittling J., Han Y., Hou C., Pan M., Milli J., Olofsson J., Pearce T., Sefilian A. A., Nurmohamed A., Lee J., Mpofu Y., Bonduelle M., Booth M., Brennan A., del Burgo C., Carpenter J. M., Cataldi G., Chiang E., Ertel S., Henning Th., Jankovic M. R., Kennedy G. M., Kóspál Á., Krivov A. V., Lovell J. B., Luppe P., MacGregor M. A., Mac Manamon S., Marino S., Marshall J. P., Matrà L., Moór A., Pérez S., Weber P., Wilner D. J., Wyatt M. C.   +39 more
doaj   +1 more source

Stabilized Extracellular Vesicle Formulations for Inhalable Dry Powder Development

Small, EarlyView.
Extracellular vesicles (EVs) hold promise for chronic obstructive pulmonary disease (COPD) treatment but face challenges with storage and delivery. This study demonstrates the stabilization of lung fibroblast‐derived EVs using inulin, enabling freeze‐drying and spray‐drying.
Eva M. Jansen, Luke van der Koog, Robin A.B. Elferink, Karim Rafie, Anika Nagelkerke, Reinoud Gosens, Henderik W. Frijlink, Wouter L.J. Hinrichs   +7 more
wiley   +1 more source

Vertical Structure of Gas and Dust in Four Debris Disks

The Astrophysical Journal
We present high-spectral-resolution M -band spectra from iSHELL on NASA’s Infrared Telescope Facility along the line of sight to the debris disk host star HD 32297. We also present a Gemini Planet Imager H -band polarimetric image of the HD 131488 debris
Kadin Worthen, Christine H. Chen, Sean D. Brittain, Cicero X. Lu, Isabel Rebollido, Aoife Brennan, Luca Matrà, Carl Melis, Timoteo Delgado, Aki Roberge, Johan Mazoyer   +10 more
doaj   +1 more source

Resolving the terrestrial planet-forming region of HD 172555 with ALMA

Astronomy & Astrophysics
Context. Giant impacts between planetary embryos are a natural step in the terrestrial planet formation process and are expected to create disks of warm debris in the terrestrial regions of their stars.
Roumeliotis Z., Matrà L., Kennedy G. M., Marino S., Su K. Y. L., Wilner D. J., Wyatt M. C., Jackson A. P.   +7 more
doaj   +1 more source

Bioengineered Bacterial Vesicles and Biomimetic Hybrids Eliminate Biofilms and Balance the Gut Microbiome

Small, EarlyView.
Biomimetic nanocarriers based on liposomes and Myxobacteria outer‐membrane vesicles (OMVs) are effective antibiotic delivery systems. Hybrids have a higher drug loading and can target intracellular pathogens, while OMVs evade immune clearance. Biomimetic nanoantibiotics effectively eliminate the biofilms of Gram‐negative bacteria. Besides, Myxobacteria
Leila Pourtalebi Jahromi, Benedikt Kronast, Jennifer Munkert, Lorenzo Sana, Marcus Koch, Heike Danzer, Sirka Dormeyer, Shuhan Jiang, Fabian Herrmann, Matthias Weiler, Anna Kashkanova, Vahid Sandoghdar, Mario M. Zaiss, Gregor Fuhrmann   +13 more
wiley   +1 more source

Controlling the Collective Transport of Large Passive Particles With Suspensions of Microorganisms

Small, EarlyView.
Directional light stimuli induce the accumulation of microalgae in suspensions of Chlamydomonas reinhardtii. This accumulation triggers large scale bioconvection rolls capable of macroscale transport. Exploiting these bioconvective flows enables to collectively transport of hundreds of large passive particles, paving the way for future applications in ...
Taha Laroussi, Julien Bouvard, Etienne Jambon‐Puillet, Mojtaba Jarrahi, Gabriel Amselem   +4 more
wiley   +1 more source

Secret of Longevity: Protoplanetary Disks as a Source of Gas in Debris Disks

The Astrophysical Journal
While protoplanetary disks (PPDs) are generally thought to disperse within several million years, recent observations have revealed gas in their older counterparts, debris disks.
Wataru Ooyama, Riouhei Nakatani, Takashi Hosokawa, Hiroto Mitani, Neal J. Turner   +4 more
doaj   +1 more source

Frictional and Particle Emission Behavior of Different Brake Disk Concepts Correlated with Optical Pin Surface Characterization

Atmosphere
Brake wear emissions can be reduced by altering the surface of brake disks. A parametric study using a gray cast iron and a laser-cladded brake disk was performed in a pin-on-disk experiment with integrated optical pin surface characterization and ...
Juan C. Londono Alfaro, Sven Brandt, Chengyuan Fang, David Hesse, Timo Gericke, Frank Schiefer, Carsten Schilde, Sebastian A. Kaiser   +7 more
doaj   +1 more source

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

steel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann, Giorgia Lupi, Sylvain Dossin, Riccardo Casati, Mandanà Moshiri, Arne Röttger, Faraz Deirmina   +6 more
wiley   +1 more source

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source