Results 61 to 70 of about 206 (178)

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, Volume 13, Issue 45, 13 August 2026.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source

Edges In Coadded Images

The Open Journal of Astrophysics
We investigate how discontinuities in the point spread function (PSF) and image noise affect weak gravitational lensing shear measurements. Our focus is on discontinuities that arise in coadded images, particularly when edges from input images cross the ...
Erin Sheldon
doaj   +1 more source

Euclid: Early Release Observations – Weak gravitational lensing analysis of Abell 2390 ★

Astronomy & Astrophysics
The Euclid space telescope of the European Space Agency (ESA) is designed to provide sensitive and accurate measurements of weak gravitational lensing distortions over wide areas on the sky. Here, we present a weak gravitational lensing analysis of early
Schrabback T., Congedo G., Gavazzi R., Hartley W. G., Jansen H., Kang Y., Kleinebreil F., Atek H., Bertin E., Cuillandre J.-C., Diego J. M., Grandis S., Hoekstra H., Kümmel M., Linke L., Miyatake H., Okabe N., Paltani S., Schefer M., Simon P., Tarsitano F., Taylor A. N., Weaver J. R., Bhatawdekar R., Montes M., Rosati P., Toft S., Altieri B., Amara A., Amendola L., Andreon S., Auricchio N., Baccigalupi C., Baldi M., Balestra A., Bardelli S., Battaglia P., Bender R., Biviano A., Branchini E., Brescia M., Brinchmann J., Camera S., Cañas-Herrera G., Candini G. P., Capobianco V., Carbone C., Cardone V. F., Carretero J., Casas S., Castander F. J., Castellano M., Castignani G., Cavuoti S., Chambers K. C., Cimatti A., Colodro-Conde C., Conselice C. J., Conversi L., Copin Y., Costille A., Courbin F., Courtois H. M., Cropper M., Da Silva A., Degaudenzi H., De Lucia G., Dole H., Douspis M., Dubath F., Dupac X., Dusini S., Escoffier S., Farina M., Farinelli R., Farrens S., Faustini F., Ferriol S., Finelli F., Fosalba P., Frailis M., Franceschi E., Fumana M., Galeotta S., George K., Gillard W., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Haugan S. V. H., Hoar J., Holmes W., Hook I. M., Hormuth F., Hornstrup A., Hudelot P., Jahnke K., Jhabvala M., Joachimi B., Keihänen E., Kermiche S., Kilbinger M., Kubik B., Kuijken K., Kunz M., Kurki-Suonio H., Laureijs R., Le Brun A. M. C., Le Mignant D., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marcin S., Marggraf O., Martinelli M., Martinet N., Marulli F., Massey R. J., Maurogordato S., Medinaceli E., Mei S., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mohr J. J., Mora A., Moresco M., Moscardini L., Nakajima R., Neissner C., Nichol R. C., Niemi S.-M., Padilla C., Pasian F., Pedersen K., Percival W. J., Pettorino V., Pires S., Polenta G., Poncet M., Popa L. A., Pozzetti L., Raison F., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Rosset C., Saglia R., Sakr Z., Sapone D., Sartoris B., Schirmer M., Schneider P., Secroun A., Seidel G., Seiffert M., Serrano S., Sirignano C., Sirri G., Spurio Mancini A., Stanco L., Steinwagner J., Tallada-Crespí P., Tereno I., Tessore N., Toledo-Moreo R., Torradeflot F., Tutusaus I., Valentijn E. A., Valenziano L., Valiviita J., Vassallo T., Verdoes Kleijn G., Veropalumbo A., Wang Y., Weller J., Zamorani G., Zerbi F. M., Zucca E., Bolzonella M., Burigana C., Gabarra L., Martín-Fleitas J., Matthew S., Pezzotta A., Scottez V., Sereno M., Viel M., Scott D.   +198 more
doaj   +1 more source

Cosmology with the line-of-sight shear of strong gravitational lenses

Stage-IV photometric galaxy surveys are designed to measure the position and shapes of billions of galaxies. Their aim is to characterise the large-scale distribution of matter in the Universe using galaxy clustering and weak gravitational lensing. As a byproduct, stage-IV surveys are expected to detect more than a hundred thousand strong gravitational
Fleury, Pierre, Johnson, Daniel, Duboscq, Théo, Hogg, Natalie B., Larena, Julien   +4 more
openaire   +2 more sources

Obstructive Sleep Apnea: Epidemiology, Pathophysiology, Complications, Diagnosis, Management, and Emerging Fibrosis‐Linked Remodeling

MedComm, Volume 7, Issue 8, August 2026.
Obstructive sleep apnea (OSA) is characterized by recurrent upper‐airway collapse, which generates key nocturnal stressors including intermittent hypoxia, sleep fragmentation, intrathoracic pressure stress, and sympathetic activation. These physiological disturbances converge on shared biological mechanisms, including oxidative stress, inflammation ...
Nhi Ho Thi Thuy, Thị Hằng Giang Phan, Ali Hussein Eid, Paola Maccioccu, Stefania Camboni, Gavino Casu, Anna Maria Posadino, Roberta Giordo, Gianfranco Pintus   +8 more
wiley   +1 more source

Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests

The Open Journal of Astrophysics
Combined survey analyses of galaxy clustering and weak gravitational lensing (3x2-pt studies) will allow new and accurate tests of the standard cosmological model. However, careful validation is necessary to ensure that these cosmological constraints are
Ni Putu Audita Placida Emas, A. Porredon, C. Blake, J. DeRose, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, A. Dey, B. Dey, P. Doel, S. Ferraro, J. E. Forero-Romero, C. Garcia-Quintero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, S. Heydenreich, K. Honscheid, D. Huterer, M. Ishak, S. Joudaki, R. Joyce, E. Jullo, S. Juneau, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, A. Krolewski, O. Lahav, M. Landriau, J. U. Lange, L. Le Guillou, A. Leauthaud, M. Manera, R. Miquel, S. Nadathur, W. J. Percival, F. Prada, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, A. Semenaite, H. Seo, J. Silber, D. Sprayberry, Z. Sun, G. Tarlé, B. A. Weaver, R. H. Wechsler, R. Zhou   +56 more
doaj   +1 more source

Accurate cosmological emulator for the probability distribution function of gravitational lensing of point sources

Astronomy & Astrophysics
Aims. We developed an accurate and computationally efficient emulator to model the gravitational lensing magnification probability distribution function (PDF), enabling robust cosmological inference of point sources such as supernovae and gravitational ...
Turker Tunç, Marra Valerio, Castro Tiago, Quartin Miguel, Borgani Stefano   +4 more
doaj   +1 more source

Raychaudhuri equation and Weyl-driven shear: A weak-field approach to lensing and gravitational waves

Physics Letters A
The letter studies phenomena like gravitational wave propagation and gravitational lensing using the celebrated Raychaudhuri equation (RE) in the weak field limit. Newtonian analogue of Relativistic RE has been explored. In doing so, role of shear has been found to be extremely important in explaining these phenomena. Consequently, the RE for shear has
Madhukrishna Chakraborty, Subenoy Chakraborty   +1 more
openaire   +2 more sources

Spatial Variability and Drivers of Salt Marsh Cliff Erosion in the Dutch Wadden Sea: From Observation to Simulation

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 8, August 2026.
Abstract Lateral erosion of salt marshes via cliff retreat is a primary cause of global marsh loss, driven by interactions between hydrodynamics, sediment, and vegetation. While previous studies show a linear relationship between wave power and cliff retreat, models based on this relationship are largely unvalidated for short‐term (sub‐yearly) and ...
S. Dzimballa, V. Kitsikoudis, P. W. J. M. Willemsen, E. O. Folmer, B. W. Borsje, I. Y. Georgiou, M. C. Bregman, D. C. M. Augustijn   +7 more
wiley   +1 more source

The Effect of Intrinsic Alignments on Weak-lensing Statistics in Hydrodynamical Simulations

The Astrophysical Journal
The next generation of weak-gravitational-lensing surveys has the potential to place stringent constraints on cosmological parameters. However, their analysis is limited by systematics such as the intrinsic alignments of galaxies, which alter weak ...
Max E. Lee, Zoltán Haiman, Shivam Pandey, Shy Genel   +3 more
doaj   +1 more source