Results 41 to 50 of about 291,896 (358)

The COMET toolkit for composing customizable genetic programs in mammalian cells

open access: yesNature Communications, 2020
Engineering mammalian cells to carry out sophisticated and customizable genetic programs requires a toolkit of multiple orthogonal and well-characterized transcription factors (TFs).
Patrick S. Donahue   +5 more
semanticscholar   +1 more source

InSAR slip rate determination on the Altyn Tagh Fault, northern Tibet, in the presence of topographically correlated atmospheric delays

open access: yesGeophysical Research Letters, 2008
The interseismic strain across the Altyn Tagh Fault at 85°E has been measured using 59 interferograms from 26 ERS‐1/2 SAR acquisitions on a single track for the period 1993–2000.
J. R. Elliott   +3 more
doaj   +1 more source

Catalogue of emission lines in the spectrum of the comet C/2004 Q2 (Machholz) on 15 January, 2004

open access: yesВісник Астрономічної школи, 2013
Idetified the emission lines in the spectrum of comet C/2004 Q2 (MACHHOLZ), obtained in the region λλ4760÷6580ÅÅ on 15 January, 2005 with the 2-meter telescope of Shamakha AO of NAS of Azerbaijan.
Kh. M. Mikailov   +3 more
doaj   +1 more source

The way of K.I. Churyumov to science

open access: yesВісник Астрономічної школи, 2016
A brief biography and details about the scientific work of the famous scientist, doctor of physical and mathematical sciences, corresponding member of the National Academy of Sciences of Ukraine, professor Klim Ivanovich Churyumov are presented.
V. M. Efimenko
doaj   +1 more source

A Study of the 1668 Deungrok, Records of Celestial Phenomena from the Joseon Dynasty [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
This paper will introduce and overview in general the Seongbyeon Deungrok issued by the Gwansang-gam, the Astronomical Board in the Joseon Dynasty of Korea. All the Chinese characters in the 1668 Seongbyeon Deungrok was deciphered at first and these were
Il-Seong Nha, Yoon Hong, Nami Ahn
doaj   +1 more source

Nickel oxide nanoparticles exposure as a risk factor for male infertility: “In vitro” effects on porcine pre-pubertal Sertoli cells

open access: yesFrontiers in Endocrinology, 2023
Lately, nickel oxide nanoparticles (NiO NPs) have been employed in different industrial and biomedical fields. Several studies have reported that NiO NPs may affect the development of reproductive organs inducing oxidative stress and, resulting in male ...
Iva Arato   +16 more
doaj   +1 more source

The ethanolic extract of Gomphrena celosioides is not carcinogenic and has antigenotoxic effects and chemopreventive Properties [PDF]

open access: yesBrazilian Journal of Biology
Gomphrena celosioides, popularly known as perpétua, perpétua brava, bachelor´s button and prostate globe amarahth, is used for the treatment of urinary tract disorders, kidney stones, for skin diseases, infectious diseases, gastrointestinal and ...
M. M. M. D. Levenhagen   +7 more
doaj   +1 more source

Photometry of comet C/2011 L4 (PANSTARRS) at 4.4 - 4.2 AU heliocentric distances

open access: yes, 2014
We present an analysis of the photometric data of comet C/2011 L4 (PANSTARRS) observed at heliocentric distance of 4.4 - 4.2 AU. The comet C/2011 L4 (PANSTARRS) shows one significant activity, despite of its quite large heliocentric distance.
Borysenko, Serhii   +2 more
core   +1 more source

Organic Matter in Cometary Environments

open access: yesLife, 2021
Comets contain primitive material leftover from the formation of the Solar System, making studies of their composition important for understanding the formation of volatile material in the early Solar System.
Adam J. McKay, Nathan X. Roth
doaj   +1 more source

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