Results 121 to 130 of about 291,896 (358)

The Development and Validation of the Smell‐Qx Questionnaire, Based on a Systematic Review of the Literature and the COMET Initiative on the Development of Core Outcome Sets for Clinical Trials in Olfactory Disorders

open access: yesInternational Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Olfactory dysfunction affects up to 22% of the population. Accurate assessment is vital for diagnosis and tracking outcomes, often using patient‐reported outcome measures (PROMs). Aims We aimed to develop and validate a novel questionnaire for assessing olfactory and gustatory dysfunction.
Matt Lechner   +31 more
wiley   +1 more source

Seeing Halley's Comet: A guide for observers in the Northern Hemisphere [PDF]

open access: yes
A guide for the observation of Halley's comet is presented. The path of the comet is described for the fly by dates and charts are provided for location of the comet in the morning or evening skies.

core   +1 more source

Will Comet ISON (C/2012 S1) Survive Perihelion?

open access: yes, 2013
On 2013 November 28 Comet ISON (C/2012 S1) will pass by the Sun with a perihelion distance of 2.7 solar radii. Understanding the possible outcomes for the comet's response to such a close passage by the Sun is important for planning observational ...
Knight, Matthew M., Walsh, Kevin J.
core   +1 more source

Integrierte chemo‐enzymatische Synthese des mRNA‐Impfstoff‐Bausteins N1‐Methylpseudouridintriphosphat

open access: yesAngewandte Chemie, EarlyView.
Pseudouridin‐5'‐triphosphat (ΨTP) und sein N1‐methyliertes Derivat (m1ΨTP) sind entscheidende Komponenten in der mRNA‐Impfstofftechnologie. Hier wird ein atomökonomischer, ertragreicher biokatalytischer Weg zur Synthese von ΨTP vorgestellt. Zudem wurde ein neuer chemo‐enzymatischer Weg für die m1ΨTP‐Synthese entwickelt.
Martin Pfeiffer   +4 more
wiley   +1 more source

The Composition of Dust in Jupiter-Family Comets as Inferred from Infrared Spectroscopy

open access: yes, 2008
We review the composition of Jupiter-family comet dust as inferred from infrared spectroscopy. We find that Jupiter-family comets have 10 micron silicate emission features with fluxes roughly 20-25% over the dust continuum (emission strength 1.20-1.25 ...
Kelley, Michael S., Wooden, Diane H.
core   +1 more source

Redes sociales y acción colectiva.

open access: yesREDES: Revista Hispana para el Análisis de Redes Sociales, 2007
Reseña: Varanda, M. (2005). La réorganisation du commerce d’un centre-ville: Résistances et obstacles à l’action collective. Paris: Ed. L’Harmattan.
Comet, Catherine
doaj   +3 more sources

Near-Earth Asteroids as Possible Parent Bodies of Meteor Streams [PDF]

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2016
The genetic relationship of meteor streams with near-Earth asteroids (NEAs) is being actively studied. A genetic link with the asteroid is possible only for streams in which meteoroids have the geocentric speed smaller than 50 km/s, thereby meaning the ...
M.G. Sokolova, M.V. Sergienko
doaj  

Integrated Chemoenzymatic Synthesis of the mRNA Vaccine Building Block N1‐Methylpseudouridine Triphosphate

open access: yesAngewandte Chemie International Edition, EarlyView.
Pseudouridine‐5′‐triphosphate (ΨTP) and its N1‐methylated derivative (m1ΨTP) are crucial components in mRNA vaccine technology. Here, an atom‐economic, high‐yielding biocatalytic route for ΨTP synthesis is presented. A new chemoenzymatic route for m1ΨTP synthesis was developed.
Martin Pfeiffer   +4 more
wiley   +1 more source

Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint

open access: yesThe Anatomical Record, EarlyView.
Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler   +8 more
wiley   +1 more source

Lately Exposed Amorphous Water Ice on Comet 49P/Arend-Rigaux

open access: yes, 2014
Comet 49P/ Arend-Rigaux, thought to be a low activity comet since the 1980's was found to be active in its recent apparitions. Recent analysis of the data obtained from Spitzer observation of the comet in 2006 compared with laboratory spectra has ...
Arora, S.   +4 more
core   +1 more source

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