Results 51 to 60 of about 35,742 (267)

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase   +5 more
wiley   +1 more source

Asteroids [PDF]

open access: yesSymposium - International Astronomical Union, 1986
Using a number of different conventional observing methods of astronomy like spectrophotometry, polarimetry, IR-radiometry and UBV-photometry, physical properties of asteroids can be derived, such as diameters, spectral reflectivity and albedo. Based on observable parameters a classification in terms of taxonomic types can be made and the mineralogy of
openaire   +1 more source

Zehn Jahre Gaia‐Messungen: Die hochgenaue Kartierung des Himmels

open access: yesPhysik in unserer Zeit, EarlyView.
Das astrometrische Weltraumobservatorium Gaia der Europäischen Weltraumorganisation hat die astrometrische Forschung revolutioniert, indem es unter anderem präzise Positionen, Bewegungen und Entfernungen von fast zwei Milliarden Himmelsobjekten gemessen hat. Damit stellt es wertvolle Daten für fast alle Gebiete der Astrophysik bereit. Nach dem Ende der
Stefan Jordan
wiley   +1 more source

Asteroids and comets: one-hundredth anniversary of discoveries, observations and researches in Crimea

open access: yesВісник Астрономічної школи, 2011
The report is presented in which a review of studies of small bodies – asteroids and comets in Crimea during 100 years is made. The first stage was the observing and openings of asteroids and comets in Simeiz observatory from 1908 year. The Second stage –
V. P. Tarashchuk
doaj   +1 more source

A Systemic Reflection On Why Biology Is Best : E(s) ∞$$ \infty $$ mc2 Sentience, Consciousness and Transcendance?

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT The short essay makes a case that a post biological world will be a devolution. Sentience is a relational process linked with the awe and wonder we experience in relation to one another and our shared habitat. The voiceless need to be protected by extending solidarity on the basis of sentience—a normative plea, but also on the basis of ...
J. J. McIntyre‐Mills
wiley   +1 more source

The Distribution of Highly Red-sloped Asteroids in the Middle and Outer Main Belt

open access: yesThe Planetary Science Journal
Red ( S > 10%/0.1 μ m) spectral slopes are common among Centaurs and trans-Neptunian objects (TNOs) in the outer solar system. Interior to and co-orbital with Jupiter, the red ( S ∼ 10%/0.1 μ m) slopes of D-type main-belt and Jupiter Trojan asteroids are
Oriel A. Humes   +2 more
doaj   +1 more source

Size and Albedo Constraints for (152830) Dinkinesh Using WISE Data

open access: yesThe Astrophysical Journal Letters, 2023
Probing small main-belt asteroids provides insight into their formation and evolution through multiple dynamical and collisional processes. These asteroids also overlap in size with the potentially hazardous near-Earth object population and supply the ...
Kiana D. McFadden   +9 more
doaj   +1 more source

AVAST Survey 0.4-1.0 μm Spectroscopy of Igneous Asteroids in the Inner and Middle Main Belt [PDF]

open access: yes, 2012
We present the spectra of 60 asteroids, including 47 V-types observed during the first phase of the Adler V-Type Asteroid (AVAST) Survey. SDSS photometry was used to select candidate V-type asteroids for follow up by nature of their very blue $i-z$ color.
arxiv   +1 more source

Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK

open access: yesJournal of Research in Science Teaching, EarlyView.
ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson   +1 more
wiley   +1 more source

Big Cat Mortality in Subsistence Hunts in Amazonia 亚马孙雨林地区生计狩猎中的大型猫科动物致死情况研究

open access: yesWildlife Letters, EarlyView.
We use data from a participatory biodiversity monitoring program to estimate the annual mortality of jaguars and pumas resulting from subsistence hunts in two Amazonian Extractive Reserves. We estimate that around 50 big cats are killed annually in the study area, which is consistent with an independent estimate for the same area and within the same ...
Elildo A. R. Carvalho Jr.   +3 more
wiley   +1 more source

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