Results 61 to 70 of about 5,756,551 (307)
On the feasibility of a negative polarity electric sail [PDF]
Annales Geophysicae, 2009 An electric solar wind sail is a recently introduced propellantless space propulsion method whose technical development has also started. In its original version, the electric sail consists of a set of long, thin, centrifugally stretched and ...
P. Janhunen
doaj +1 more source
Energies, 2022 Space charge accumulation in polypropylene (PP) affect the dielectric properties and breakdown strength of the material. The pre-injected charge in PP under the action of different polarity voltage is quantitatively characterized, and the effects of the ...
Zhaoliang Xing +6 more
doaj +1 more source
Comparison of Magnetic Flux Distribution between a Coronal Hole and a Quiet Region
, 2007 Employing Big Bear Solar Observatory (BBSO) deep magnetograms and H${\alpha}$ images in a quiet region and a coronal hole, observed on September 14 and 16, 2004, respectively, we have explored the magnetic flux emergence, disappearance and distribution ...
Chiuderi Drago F. +9 more
core +1 more source
The coordination of cell growth during fission yeast mating requires Ras1-GTP hydrolysis [PDF]
, 2013 The spatial and temporal control of polarity is fundamental to the survival of all organisms. Cells define their polarity using highly conserved mechanisms that frequently rely upon the action of small GTPases, such as Ras and Cdc42.
A Merla +58 more
core +3 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
When negation is not negation [PDF]
, 2008 In this paper I will discuss the formation of different types of yes/no questions in Serbian (examples in (1)), focusing on the syntactically and semantically puzzling example (1d), which involves the negative auxiliary inversion.
Milicevic, Nataša
core
FEBS Letters, EarlyView.Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes +4 more
wiley +1 more source
Parasitic licensing of negative polarity items [PDF]
The Journal of Comparative Germanic Linguistics, 2007 This paper proposes a new treatment of parasitically licensed negative polarity items, based on the idea that indefinite negative polarity items may optionally incorporate a negative feature from their licenser, and thus acquire the necessary features to in turn license a negative polarity item.
openaire +2 more sources
Dual targeting of RET and SRC synergizes in RET fusion‐positive cancer cells
Molecular Oncology, EarlyView.Despite the strong activity of selective RET tyrosine kinase inhibitors (TKIs), resistance of RET fusion‐positive (RET+) lung cancer and thyroid cancer frequently occurs and is mainly driven by RET‐independent bypass mechanisms. Son et al. show that SRC TKIs significantly inhibit PAK and AKT survival signaling and enhance the efficacy of RET TKIs in ...
Juhyeon Son +13 more
wiley +1 more source
Negative polarity licensing, factivity and the CP field
Anuario del Seminario de Filología Vasca "Julio de Urquijo", 2007 -
Carlos de Cuba
doaj +1 more source