Results 91 to 100 of about 2,258,607 (385)
Ultrahigh Energy Cosmic Rays from Topological Defects --- Cosmic Strings, Monopoles, Necklaces, and All That [PDF]
, 1998 The topological defect scenario of origin of the observed highest energy cosmic rays is reviewed. Under a variety of circumstances, topological defects formed in the early Universe can be sources of very massive particles in the Universe today. The decay products of these massive particles may be responsible for the observed highest energy cosmic ray ...
arxiv +1 more source
Sociology of Health &Illness, Volume 45, Issue 1, Page 128-144, January 2023., 2023 Abstract Eugenic ideas in Mexico were popularised after the Mexican Revolution (1910–1920) as a way of ‘modernising’ and ‘civilising’ the nation. As a result, eugenic ideas were able to linger and be maintained through different departments, institutions, and individuals from all disciplines. After eugenics was considered a pseudoscience, its practices
R. Sanchez‐Rivera
wiley +1 more source
A Geant4 based engineering tool for Fresnel lenses
, 2007 Geant4 is a Monte Carlo radiation transport toolkit that is becoming a tool of generalized application in areas such as high-energy physics, nuclear physics, astroparticle physics, or medical physics.
Costa, João +2 more
core +1 more source
Highest energy particle physics with the Pierre Auger Observatory [PDF]
, 2014 Astroparticles offer a new path for research in the field of particle physics, allowing investigations at energies above those accesible with accelerators.
Mariazzi, Analisa
core +2 more sources
Advanced Functional Materials, EarlyView.The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe +7 more
wiley +1 more source
The Role of Pressure Anisotropy in Cosmic Ray Hydrodynamics [PDF]
, 2019 Cosmic ray propagation in the Milky Way and other galaxies is largely diffusive, with mean free path determined primarily by pitch angle scattering from hydromagnetic waves with wavelength of order the cosmic ray gyroradius. In the theory of cosmic ray self confinement, the waves are generated by instabilities driven by the cosmic rays themselves.
arxiv +1 more source
Kaluza-Klein and Gauss-Bonnet cosmic strings [PDF]
Class.Quant.Grav. 13 (1996) 2635-2650, 1996 We make a systematic investigation of stationary cylindrically symmetric solutions to the five-dimensional Einstein and Einstein-Gauss-Bonnet equations. Apart from the five-dimensional neutral cosmic string metric, we find two new exact solutions which qualify as cosmic strings, one corresponding to an electrically charged cosmic string, the other to ...
arxiv +1 more source
Recent results and perspectives on cosmology and fundamental physics from microwave surveys [PDF]
, 2015 Recent cosmic microwave background data in temperature and polarization have reached high precision in estimating all the parameters that describe the current so-called standard cosmological model.
Alighieri, Sperello Di Serego +16 more
core +6 more sources
Nanoscale Biodegradable Printing for Designed Tuneability of Vaccine Delivery Kinetics
Advanced Materials, EarlyView.Spatiotemporal Controlled Release Inks of Biocompatible polyEsters (SCRIBE) is a novel 2PP resin family with sub‐micron resolution and tuneable hydrolysis. SCRIBE enables direct printing of hollow microparticles with complex chemistries and geometries inaccessible to molding techniques, which are used to modulate antibody titers and class switching as ...
David J. Peeler +16 more
wiley +1 more source
Boosted Tau Lepton as a Microscope and Macroscope
Advances in High Energy Physics, 2022 Anomalies from the LHCb lepton flavour universality and Fermilab muon anomalous magnetic moment show tantalizing hints of possible new physics from the lepton sectors.
Sitian Qian +11 more
doaj +1 more source