Study of Capsule Geometry for Dust Sample Acquisition During Mars Atmospheric Entry

2015 ◽  
Vol 52 (2) ◽  
pp. 375-382 ◽  
Author(s):  
Yousuke Ogino ◽  
Ippei Terata ◽  
Keisuke Nakajima ◽  
Naofumi Ohnishi ◽  
Kazuhisa Fujita
Keyword(s):  
Dust Sample ◽  
Atmospheric Entry

Deceleration system sizing for Martian atmospheric entry

1994 ◽  
Author(s):  
A. Tribble ◽  
J. McKinney ◽  
M. Collier
Keyword(s):  
Atmospheric Entry

Analysis of Nonequilibrium CN Radiation Encountered During Titan Atmospheric Entry

2011 ◽  
Vol 25 (4) ◽  
pp. 493-499 ◽  
Author(s):  
Aaron M. Brandis ◽  
Richard G. Morgan ◽  
Timothy J. McIntyre
Keyword(s):  
Atmospheric Entry

scholarly journals Petrology and mineralogy of the Viñales meteorite, the latest fall in Cuba

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110198
Author(s):  
Feng Yin ◽  
Deqiu Dai
Keyword(s):  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Optical Microscope ◽  
Chemical Compositions ◽  
Atmospheric Entry ◽  
Thin Sections ◽  
Homogeneous Chemical ◽  
Del Rio ◽  
The Masses ◽  
Metal Phases

The new Cuban chondrite, Viñales, fell on February first, 2019 at Pinar del Rio, northwest of Cuba (22°37′10″N, 83°44′34″W). A total of about 50–100 kg of the meteorite were collected and the masses of individual samples are in a range 2–1100 g. Two polished thin sections were studied by optical microscope, Raman spectroscopy and electron microprobe analysis in this study. The meteorite mainly consists of olivine (Fa24.6), low-Ca pyroxene (Fs20.5), and troilite and Fe-Ni metal, with minor amounts of feldspar (Ab82.4-84.7). Three poorly metamorphosed porphyritic olivine-pyroxene and barred olivine chondrules are observed. The homogeneous chemical compositions and petrographic textures indicate that Viñales is a L6 chondrite. The Viñales has fresh black fusion crust with layered structure, indicating it experienced a high temperature of ∼1650°C during atmospheric entry. Black shock melt veins with width of 100–600 μm are pervasive in the Viñales and olivine, bronzite, and metal phases are dominate minerals of the shock melt vein. The shock features of major silicate minerals suggest a shock stage S3, partly S4, and the shock pressure could be >10 GPa.

scholarly journals Geographic source estimation using airborne plant environmental DNA in dust

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chelsea Lennartz ◽  
Joel Kurucar ◽  
Stephen Coppola ◽  
Janice Crager ◽  
Johanna Bobrow ◽  
...  
Keyword(s):  
Plant Species ◽  
Fungal Spores ◽  
Geographic Origin ◽  
Microscopic Analysis ◽  
Environmental Dna ◽  
Dust Sample ◽  
Accurate Estimate ◽  
Plant Parts ◽  
Settled Dust ◽  
Great Utility

AbstractInformation obtained from the analysis of dust, particularly biological particles such as pollen, plant parts, and fungal spores, has great utility in forensic geolocation. As an alternative to manual microscopic analysis of dust components, we developed a pipeline that utilizes the airborne plant environmental DNA (eDNA) in settled dust to estimate geographic origin. Metabarcoding of settled airborne eDNA was used to identify plant species whose geographic distributions were then derived from occurrence records in the USGS Biodiversity in Service of Our Nation (BISON) database. The distributions for all plant species identified in a sample were used to generate a probabilistic estimate of the sample source. With settled dust collected at four U.S. sites over a 15-month period, we demonstrated positive regional geolocation (within 600 km2 of the collection point) with 47.6% (20 of 42) of the samples analyzed. Attribution accuracy and resolution was dependent on the number of plant species identified in a dust sample, which was greatly affected by the season of collection. In dust samples that yielded a minimum of 20 identified plant species, positive regional attribution was achieved with 66.7% (16 of 24 samples). For broader demonstration, citizen-collected dust samples collected from 31 diverse U.S. sites were analyzed, and trace plant eDNA provided relevant regional attribution information on provenance in 32.2% of samples. This showed that analysis of airborne plant eDNA in settled dust can provide an accurate estimate regional provenance within the U.S., and relevant forensic information, for a substantial fraction of samples analyzed.

Development of an Aerogel Sample Collector for Martian Dust Sample Return

2014 ◽  
Author(s):  
Takashi Ozawa ◽  
Toshiyuki Suzuki ◽  
Yoshikiyo Hatakeyama ◽  
Makoto Tabata ◽  
Kazuhisa Fujita
Keyword(s):  
Dust Sample ◽  
Aerogel Sample ◽  
Sample Return
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