Results 21 to 30 of about 3,899,916 (286)

Cell Polarity and Morphogenesis: Functions and Mechanisms of Cell Divisions in Vertebrate Gastrulation [PDF]

open access: yes, 2004
Gastrulation shapes a vertebrate embryo from an egg-shaped aggregate of cells. In many vertebrates, massive cell divisions occur during gastrulation. In this thesis, I investigate the pattern, function, and regulation of mitotic divisions in zebrafish ...
Gong, Ying, Ying Gong
core   +1 more source

Trees and Fields and Negative Polarity

open access: yesHermes, 2011
The paper takes as its point of departure a comparison between two kinds of approaches to clause structure, namely tree analyses like the generative analysis and field analyses like the sætningsskema analysis of Danish of Diderichsen (1946) and many ...
Sten Vikner
doaj   +1 more source

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

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

Neuronal Polarity: Positive and Negative Feedback Signals

open access: yesFrontiers in Cell and Developmental Biology, 2019
Establishment and maintenance of neuronal polarity are critical for neuronal development and function. One of the fundamental questions in neurodevelopment is how neurons generate only one axon and several dendrites from multiple minor neurites. Over the
Tetsuya Takano   +3 more
doaj   +1 more source

Identifying negative sentiment polarity in the Judas technique

open access: yesConservation Science and Practice, 2021
In the context of conservation science and management, the Judas technique refers to outfitting an animal (a Judas animal) with a radio transmitter or other identifier so that its movements can be tracked to locate conspecifics.
Austin L. Fitzgerald   +4 more
doaj   +1 more source

Polarity-Sensitive Cell Membrane Probe Reveals Lower Polarity of Tumor Cell Membrane and Its Application for Tumor Diagnosis

open access: yes, 2022
Cancer is a health threat worldwide, and it is urgent to develop more sensitive cancer detection methods. Herein, a polarity-sensitive cell membrane probe (named COP) was developed for detecting cancer cells and tumors sensitively and selectively at the ...
Jiaxin Hong (6939563)   +4 more
core   +1 more source

Measuring the cognitive cost of downward monotonicity by controlling for negative polarity

open access: yesGlossa, 2019
Our goal in this study was to behaviorally characterize the property (or properties) that render negative quantifiers more complex in processing compared to their positive counterparts (e.g. the pair few/many).
Galit Agmon   +2 more
doaj   +2 more sources

Cell polarity and PIN protein positioning in Arabidopsis requie STEROL METHYLTRANSFERASE1 function [PDF]

open access: yes, 2003
Plants have many polarized cell types, but relatively little is known about the mechanisms that establish polarity. The orc mutant was identified originally by defects in root patterning, and positional cloning revealed that the affected gene encodes ...
Friml, Jirí   +12 more
core   +2 more sources

Negative Bias in Polar Questions

open access: yes, 2005
This paper investigates the discourse function of negative bias in questions. How and what such questions contribute to the logical form of discourse has not been the focus of previous work. We believe that such a discourse oriented approach, however, provides useful insight into the formal characteristics of bias. Adopting this perspective, we develop
Asher, Nicholas, Reese, Brian
openaire   +2 more sources

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