Results 41 to 50 of about 342,437 (282)

Photoionization models of the Eskimo nebula: evidence for a binary central star? [PDF]

, 2011
The ionizing star of the planetary nebula NGC 2392 is too cool to explain the high excitation of the nebular shell, and an additional ionizing source is necessary. We use photoionization modeling to estimate the temperature and luminosity of the putative
Danehkar, Ashkbiz, De Marco, Orsola, Frew, David J., Parker, Quentin A.   +3 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Ionizing radiation effects on blood-derived extracellular vesicles: insights into miR-34a-5p-mediated cellular responses and biomarker potential

Cell Communication and Signaling
Adverse effects of ionizing radiation on normal tissues limit the radiation dose in cancer treatment, thereby compromising treatment efficiency. Among the consistently affected non-cancer cells, peripheral blood mononuclear cells (PBMCs) exhibit high ...
Chiara Huber, Omar Elsaeed, Pia Lahmer, Simone Moertl   +3 more
doaj   +1 more source

Semi-numeric simulations of helium reionization and the fluctuating radiation background [PDF]

, 2013
Recent He II Lyman-alpha forest observations from 2.0 2.7. These results point to a fluctuating He-ionizing background, which may be due to the end of helium reionization of this era.
Aguirre, Andrei Mesinger, Barkana, Bolton, Bolton, Bolton, Bond, Conroy, Cooray, Davies, Dixon, Fardal, Faucher-Giguère, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Garzilli, Gleser, Gültekin, Hopkins, Hopkins, Hopkins, Hopkins, Hui, Jakobsen, Jenkins, Kelly, Keri L. Dixon, Kim, Kirkman, Madau, Maselli, Masters, McQuinn, Meiksin, Meiksin, Meiksin, Mesinger, Mesinger, Mesinger, Mesinger, O'Meara, Paschos, Petitjean, Press, Prochaska, Richards, Ross, Rudie, Schaye, Schaye, Schaye, Scott, Shen, Sheth, Shull, Shull, Sokasian, Songaila, Songaila, Steven R. Furlanetto, Syphers, Syphers, Syphers, Syphers, Telfer, Theuns, Theuns, Tittley, Trainor, White, Wolf, Worseck, Worseck, Worseck, Wyithe, Wyithe, Zahn, Zahn, Zaldarriaga, Zel'Dovich, Zuo   +86 more
core   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Measuring the Sources of the Intergalactic Ionizing Flux

, 2008
We use a wide-field (0.9 square degree) X-ray sample with optical and GALEX ultraviolet observations to measure the contribution of Active Galactic Nuclei (AGNs) to the ionizing flux as a function of redshift. Our analysis shows that the AGN contribution
A. J. Barger, Alexander, Arnouts, Barger, Barger, Barger, Capak, Cardamone, Chen, Faucher-Giguère, Faucher-Giguère, Faucher-Giguère, Giallongo, Giavalisco, Haardt, Hunt, Iwata, L. L. Cowie, L. Trouille, Leitherer, Madau, Malkan, Martin, Moran, Moran, Morrissey, Oesch, Richards, Sawicki, Shapley, Siana, Siana, Steffen, Steffen, Steidel, Steidel, Steidel, Strateva, Trammell, Treister, Trouille, Trouille, Vignali, Vignali, Yang, Yencho   +45 more
core   +1 more source

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

FEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino, Meijie Li, Cécile Fizames, Mattia Adamo, Laurence Lejay, Christian Dubos, Matthieu Platre, Antoine Martin   +7 more
wiley   +1 more source

Comments on “Association of excessive mobile phone use during pregnancy with birth weight: an adjunct study in Kumamoto of Japan Environment and Children’s Study”

Environmental Health and Preventive Medicine, 2017
We have read with interest the article by Lu et al. entitled “Association of excessive mobile phone use during pregnancy with birth weight: an adjunct study in Kumamoto of Japan Environment and Children’s Study” published recently in the Environmental ...
Ghazal Mortazavi, S.A.R. Mortazavi, S.M.J. Mortazavi   +2 more
doaj   +1 more source

Photofrin II as an efficient radiosensitizing agent in an experimental tumor [PDF]

, 2001
Background and Objective: The use of ionizing irradiation as radiation therapy (RT) for tumor treatment represents a well-established method. The use of photodynamic therapy (PDT), especially with Photofrin II, for tumor treatment is also known. Chemical
Corti, L., Dühmke, Eckhart, Hofstetter, Alfons, Jori, G., Schaffer, Moshe, Schaffer, Pamela Manuela, Sotti, G.   +6 more
core   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source