Results 51 to 60 of about 9,726 (203)
Photochemistry and Photobiology, EarlyView.This study evaluated the photodegradation of commercial insect repellents containing DEET and IR‐3535 under UV‐A and UV‐B irradiation using Raman spectroscopy. Pure DEET and IR‐3535 showed intrinsic photostability, whereas DEET diluted in ethanol and a commercial DEET‐based formulation exhibited significant spectral changes after UV exposure.
Viviane Gadret Borio +4 more
wiley +1 more source
Very high energy cosmic gamma rays from radio and x-ray pulsars [PDF]
, 1987 This thesis is concerned with the detection of very high energy cosmic gamma-rays from isolated pulsars and X-ray binary sources using the atmospheric Cerenkov technique. A general introduction to gamma ray detection techniques is followed by adscription
Chadwick, P.M, Chadwick, Mary Paula
core
High Energy Cosmic Rays and Gamma Radiation
, 2022 Lecture slides for the course "High Energy Cosmic Rays and Gamma Radiation" delivered by Felix Aharonian at the International School of Physics Enrico Fermi - Course 208 Foundations of Cosmic Ray ...
Aharonian, Felix
core +1 more source
The Scholar Imprisoned: Young‐Bok Shin's Decolonial Thought Against (Sub) Imperialisms in East Asia
Sociological Forum, EarlyView.ABSTRACT This article reads Young‐Bok Shin (1941–2016) as a decolonial thinker who theorized transformative worldmaking from the standpoint of the oppressed, rooted in the historical experiences of East Asia. Against the (sub)imperial “logic of sameness” that structures colonial modernity in his social world, Shin advances gongbu (studying) as a ...
Veda Hyunjin Kim
wiley +1 more source
Search for Ultra-high-energy Neutrons from Galactic Sources with the Pierre Auger Observatory
The Astrophysical JournalDeflections in the propagation of charged ultra-high-energy cosmic rays (UHECRs) caused by magnetic fields make the identification of their sources challenging. On the other hand, the arrival directions at Earth of neutrons point directly to their origin.
A. Abdul Halim +360 more
doaj +1 more source
, 2008 It is pointed out that an agreement of the one particle energy spectrum of the cosmic background radiation (CMBR) with Plank distribution of 2.725 [K] does not give a strong constraint on the coherence length of CMBR if the mean free path of CMBR is very long. The coherence length in this situation is estimated as a few times of $k_BT$.
Ishikawa, Kenzo, Tobita, Yutaka
openaire +2 more sources
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Monitoring Neutron Radiation in Extreme Gamma/X-Ray Radiation Fields
Sensors, 2020 The monitoring of neutron radiation in extreme high ≈1014 (#/cm2-s) neutron/photon fields and at extremely-low (≈10−3 #/cm2-s) levels poses daunting challenges—important in fields spanning nuclear energy, special nuclear material ...
Rusi P. Taleyarkhan
doaj +1 more source
Computer modeling and experimental work on the astrobiological implications of the martian subsurface ionising radiation environment [PDF]
, 2008 Any microbial life extant in the top meters of the martian subsurface is likely to be held dormant for long periods of time by the current permafrost conditions.
Dartnell, Lewis R, Dartnell, L.R.
core
A Hierarchical Shock Model of Ultra-high-energy Cosmic Rays
The Astrophysical JournalWe propose that a hierarchical shock model—including supernova remnant shocks, galactic wind termination shocks, and accretion shocks around cosmic filaments and galaxy clusters—can naturally explain the cosmic-ray spectrum from ∼1 GeV up to ∼ 200 EeV ...
Paul Simeon +3 more
doaj +1 more source