Results 81 to 90 of about 42,004 (309)

Photometry Using Kepler “Superstamps” of Open Clusters NGC 6791 & NGC 6819

open access: yesEPJ Web of Conferences, 2015
The Kepler space telescope has proven to be a gold mine for the study of variable stars. Usually, Kepler only reads out a handful of pixels around each pre-selected target star, omitting a large number of stars in the Kepler field.
Kuehn Charles A.   +6 more
doaj   +1 more source

Overcoming intra-molecular repulsions in PEDTT by sulphate counter-ion

open access: yesScience and Technology of Advanced Materials, 2021
We set out to demonstrate the development of a highly conductive polymer based on poly-(3,4-ethylenedithia thiophene) (PEDTT), PEDOTs structural analogue historically notorious for structural disorder and limited conductivities.
Dominik Farka   +8 more
doaj   +1 more source

Expedient, Directed Ir‐Catalyzed Diborylation of (Hetero)Biaryls via a Tridentate Ligand

open access: yesChemCatChem, EarlyView.
The iridium‐catalyzed diborylation of 2‐aryl pyridines and isoquinolines with B2pin2 is reported. Using [Ir(OMe)(COD)]2 and a terpyridine derivative as a tridentate ligand, the heterobiaryls were selectively diborylated at the 2,6‐positions of the carbocycle.
Paul Stehrer, Marko Hapke
wiley   +1 more source

Frequency and characteristics of bacterial and viral low-grade infections of the intervertebral discs: a prospective, observational study

open access: yesJournal of Orthopaedics and Traumatology, 2022
Study design Monocentric, prospective, observational study. Objective The clinical relevance of bacterial colonization of intervertebral discs is controversial.
Wolfgang Senker   +14 more
doaj   +1 more source

Boronate‐Type‐Controlled Regioselective Catalytic [2 + 2 + 2] Cyclotrimerization for Synthesis of Polysubstituted 2‐ and 3‐Borylated Pyridines

open access: yesChemistryEurope, EarlyView.
Ring the boron, not the bell: cyclotrimerization of borylated diynes with nitriles using Co and Ru catalysts allows the efficient synthesis of a wide variety of borylated pyridines with high regioselectivity, paving the way for multiple post‐functionalizations.
Eva Bednářová   +7 more
wiley   +1 more source

PEMBELAJARAN FISIKA MENGGUNAKAN PEMODELAN UNTUK MENINGKATKAN PEMAHAMAN KONSEP PADA MATERI HUKUM NEWTON GRAVITASI DAN HUKUM KEPLER

open access: yesEdu Sains: Jurnal Pendidikan Sains dan Matematika, 2019
Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep peserta didik melalui pembelajaran dengan pemodelan. Pembelajaran dengan pemodelan menitikberatkan pada model untuk menjelaskan fenomena gaya gravitasi, medan gravitasi, hukum Kepler,
Mimi Rohazal Yaumi   +2 more
doaj   +1 more source

Standing on the Shoulders of Dwarfs: the Kepler Asteroseismic LEGACY Sample. II. Radii, Masses, and Ages [PDF]

open access: yes, 2016
We use asteroseismic data from the Kepler satellite to determine fundamental stellar properties of the 66 main-sequence targets observed for at least one full year by the mission.
V. S. Aguirre   +23 more
semanticscholar   +1 more source

Alexithymia and Emotion Recognition Over the Treatment Course in Adolescents and Emerging Adults With Anorexia Nervosa

open access: yesEuropean Eating Disorders Review, EarlyView.
ABSTRACT Objective To investigate longitudinal changes in alexithymia and emotion recognition among adolescents and emerging adults with anorexia nervosa (AN) and whether these domains can independently predict the long‐term eating disorder (ED) outcome.
Michael Zeiler   +12 more
wiley   +1 more source

A Tale of Two Peas in a Pod: The Kepler-323 and Kepler-104 Systems

open access: yesThe Astronomical Journal
In order to understand the relationship between planet multiplicity, mass, and composition, we present newly measured masses of five planets in two planetary systems: Kepler-323 and Kepler-104. We used the HIRES instrument at the W.M. Keck Observatory to
C. Alexander Thomas   +12 more
doaj   +1 more source

Reference system origin and scale realization within the future GNSS constellation “Kepler”

open access: yesJournal of Geodesy, 2020
Currently, Global Navigation Satellite Systems (GNSS) do not contribute to the realization of origin and scale of combined global terrestrial reference frame (TRF) solutions due to present system design limitations.
S. Glaser   +5 more
semanticscholar   +1 more source

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