Crystal Cox et al.
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 145(4), 505-513 (2014-04-08)
Nickel-titanium closed-coil springs are purported to deliver constant forces over extended ranges of activation and working times. In-vivo studies supporting this claim are limited. The objective of this study was to evaluate changes in force-decay properties of nickel-titanium closed-coil springs...
Giovanna Visioli et al.
Bulletin of environmental contamination and toxicology, 92(4), 490-496 (2013-11-30)
In vitro short-term chronic phytotoxicity germination and root elongation test were applied to test the effects of nickel (Ni) in seed germination and root elongation in six plants species: Cucumis sativus (Cucurbitaceae), Lepidium sativum and Brassica nigra (Brassicaceae), Trifolium alexandrinum...
Gonensin O Bozdag et al.
Gene, 538(2), 251-257 (2014-02-04)
Nickel is an essential micronutrient due to its involvement in many enzymatic reactions as a cofactor. However, excess of this element is toxic to biological systems. Here, we constructed a cDNA library from Beta maritima and screened it in the...
Egor Geist et al.
Natural product reports, 31(4), 441-448 (2014-02-28)
This Highlight covers the current status of relatively unexplored sp(3)-sp(3) cross-coupling reactions with particular focus on natural product and related syntheses.
Daniel H Rothman et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(15), 5462-5467 (2014-04-08)
The end-Permian extinction is associated with a mysterious disruption to Earth's carbon cycle. Here we identify causal mechanisms via three observations. First, we show that geochemical signals indicate superexponential growth of the marine inorganic carbon reservoir, coincident with the extinction...