Results 131 to 140 of about 7,531,616 (402)
Symbiotic stars in X-rays [PDF]
Astronomy & Astrophysics, 2012 White dwarf symbiotic binaries are detected in X-rays with luminosities in the range of 1030–1034 ergs s−1. Their X-ray emission arises either from the accretion disk boundary layer, from a region where the winds from both components collide, or from ...
I. J. Lima +9 more
semanticscholar +1 more source
Alkane biosynthesis gene expression and its increased production in recombinant cyanobacteria
FEBS Open Bio, EarlyView.The transcription and mRNA structures of the alkane biosynthesis genes ado/aar were analysed in the representative cyanobacteria PCC 6803 and SK1‐2‐1, which produce C17H36 and C15H32, respectively. PCC 6803 transconjugants carrying these genes showed a 1.8‐ to 2.3‐fold increase in C17H36 production.
Misato Nagao +4 more
wiley +1 more source
Establishment and biological characterization of radioresistant colorectal cancer cell lines
FEBS Open Bio, EarlyView.Under ionizing radiation exposure, radiation‐sensitive cancer cells exhibit oxidative stress and DNA damage, while radiation‐resistant cancer cells exhibit strong antioxidant properties and DNA damage repair. Radiotherapy resistance is a major cause of recurrence and metastasis in colorectal cancer (CRC).
Tian‐Yin Qu +10 more
wiley +1 more source
FEBS Open Bio, EarlyView.SLC7A11 frequently migrates faster in SDS‐PAGE. The present study found that the high hydrophobicity of SLC7A11 causes its anomalous migration in SDS‐PAGE with a low concentration of acrylamide gel. Replacing isoleucine with asparagine reduced hydrophobicity and restored its normal migration at 55 kDa, revealing the role of hydrophobicity and gel ...
Nsengiyumva Emmanuel +13 more
wiley +1 more source
The Scattering of X-Rays and Bragg's Law.
Proceedings of the National Academy of Sciences of the United States of America, 1924 In 1914 Darwin' showed that when the classical electromagnetic theory of light is applied to the regular reflection of X-rays by a crystal a small departure from Bragg's law is demanded if there is a refractive index for X-rays in the crystal. The theory
Jauncey G.E.M.
semanticscholar +1 more source
Design of laser-electron storage ring lattice dedicated to generation of intense X-rays under Compton scattering [PDF]
arXiv, 2004 The lattice of laser-electron storage ring with controlled momentum compaction factor dedicated to generation of intense X-rays under Compton scattering is described. In such storage ring one can achieve the large energy acceptance and keep the long-term stable motion of electron beam with large energy spread. The intensity of X-rays may be very stable
arxiv
ACTION OF X-RAYS ON MAMMALIAN CELLS
Journal of Experimental Medicine, 1956 The effects of x-irradiation have been quantitatively studied on single cells of a human cervical carcinoma (HeLa) under conditions such that 100 per cent of the unirradiated cells reproduce in isolation to form macroscopic colonies.
T. Puck, P. I. Marcus
semanticscholar +1 more source
Raios-x: fascinação, medo e ciência X-rays: fascination, fear and science
Química Nova, 2009 This work presents the discovery and the use of x-rays at the end of the XIXth and the beginning of the XXth century. X-rays greatly impacted science and everyday life. Their existence broke the idea that knowledge had reached a limiting step. In general,
Rodrigo da Silva Lima +2 more
doaj +1 more source
Spectral Brilliance of Parametric X-rays at the FAST facility [PDF]
arXiv, 2015 We discuss the generation of parametric X-rays in the new photoinjector at the FAST (Fermilab Accelerator Science and Technology) facility in Fermilab. These experiments will be conducted in addition to channeling X-ray radiation experiments. The low emittance electron beam makes this facility a promising source for creating brilliant X-rays.
arxiv
The Reflexion of X-Rays by Crystals
, 1921 Theory of Reflection of X-rays from a Point Source, by a Perfect Crystal.\char22{}The derivation of the expression for the total reflected energy as obtained by other physicists, is given in simpler form.
H. Wilson
semanticscholar +1 more source