Results 11 to 20 of about 245,756 (303)

Differential sensitivity of epithelial cells to extracellular matrix in polarity establishment. [PDF]

open access: yesPLoS ONE, 2014
Establishment of apical-basal polarity is crucial for epithelial sheets that form a compartment in the body, which function to maintain the environment in the compartment.
Shigenobu Yonemura
doaj   +1 more source

Interaction Grammars [PDF]

open access: yes, 2008
Interaction Grammar (IG) is a grammatical formalism based on the notion of polarity. Polarities express the resource sensitivity of natural languages by modelling the distinction between saturated and unsaturated syntactic structures.
Bruno Guillaume   +5 more
core   +8 more sources

Tuneable Singlet Exciton Fission and Triplet-Triplet Annihilation in an Orthogonal Pentacene Dimer [PDF]

open access: yes, 2015
Fast and highly efficient intramolecular singlet exciton fission in a pentacene dimer, consisting of two covalently attached, nearly orthogonal pentacene units is reported. Fission to triplet excitons from this ground state geometry occurs within 1 ps in

core   +2 more sources

Probing Polarity and pH Sensitivity of Carbon Dots in Escherichia coli through Time-Resolved Fluorescence Analyses

open access: yesNanomaterials, 2023
Intracellular monitoring of pH and polarity is crucial for understanding cellular processes and functions. This study employed pH- and polarity-sensitive nanomaterials such as carbon dots (CDs) for the intracellular sensing of pH, polarity, and viscosity
Gilad Yahav   +6 more
doaj   +1 more source

An early secretory pathway mediated by GNOM-LIKE 1 and GNOM is essential for basal polarity establishment in Arabidopsis thaliana [PDF]

open access: yes, 2015
Spatial regulation of the plant hormone indole-3-acetic acid (IAA, or auxin) is essential for plant development. Auxin gradient establishment is mediated by polarly localized auxin transporters, including PIN-FORMED (PIN) proteins. Their localization and
Doyle, Siamsa M   +10 more
core   +1 more source

On the negative polarity sensitive indefinite determiner nakar ‘any’ in Faroese

open access: yesNordlyd: Tromsø University Working Papers on Language & Linguistics, 2009
This paper reports on fieldwork undertaken during the NORMS dialect workshop in the Faroe Islands in August 2008. I present and discuss findings from a questionnaire study of the negative polarity sensitive indefinite determiner nakar ‘any.’ The ...
Arne Martinus Lindstad
doaj   +1 more source

Effect of acetylene linkage on solvatochromism of betaine consisting of 1-methylpyridinium and phenolate units

open access: yesResults in Chemistry, 2023
Solvatochromic behavior of 4-[2-(1-methylpyridinium-4-yl)ethynyl]phenolate (5) in various solvents was investigated to elucidate the effect of C≡C linkage. 5 was found to exhibit negative solvatochromism, where the observed maximum absorption wavelengths
Takao Okazaki   +4 more
doaj   +1 more source

A Simple, Quick, and Precise Procedure for the Determination of Water in Organic Solvents [PDF]

open access: yes, 1990
A procedure for the UV/VIS-spectroscopic determination of water by the use of a solvatochromic pyridiniumphenolate betaine is given. The water content of organic solvents is calculated by a two parameter equation from λmax of the dye.
Dimroth K.   +9 more
core   +1 more source

Polarization-sensitive intensity diffraction tomography

open access: yesLight: Science & Applications, 2022
Abstract Optical anisotropy, which is an intrinsic property of many materials, originates from the structural arrangement of molecular structures, and to date, various polarization-sensitive imaging (PSI) methods have been developed to investigate the nature of anisotropic materials.
Seungri Song   +7 more
openaire   +3 more sources

Novel ERP Evidence for Processing Differences Between Negative and Positive Polarity Items in German

open access: yesFrontiers in Psychology, 2019
One unresolved question about polarity sensitivity in theoretical linguistics concerns whether and to what extent negative and positive polarity items are parallel.
Mingya Liu   +3 more
doaj   +1 more source

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