نتایج جستجو برای: volatile materials

تعداد نتایج: 473168  

Journal: :Science 2006
Kevin D McKeegan Jerome Aléon John Bradley Donald Brownlee Henner Busemann Anna Butterworth Marc Chaussidon Stewart Fallon Christine Floss Jamie Gilmour Matthieu Gounelle Giles Graham Yunbin Guan Philipp R Heck Peter Hoppe Ian D Hutcheon Joachim Huth Hope Ishii Motoo Ito Stein B Jacobsen Anton Kearsley Laurie A Leshin Ming-Chang Liu Ian Lyon Kuljeet Marhas Bernard Marty Graciela Matrajt Anders Meibom Scott Messenger Smail Mostefaoui Sujoy Mukhopadhyay Keiko Nakamura-Messenger Larry Nittler Russ Palma Robert O Pepin Dimitri A Papanastassiou François Robert Dennis Schlutter Christopher J Snead Frank J Stadermann Rhonda Stroud Peter Tsou Andrew Westphal Edward D Young Karen Ziegler Laurent Zimmermann Ernst Zinner

Hydrogen, carbon, nitrogen, and oxygen isotopic compositions are heterogeneous among comet 81P/Wild 2 particle fragments; however, extreme isotopic anomalies are rare, indicating that the comet is not a pristine aggregate of presolar materials. Nonterrestrial nitrogen and neon isotope ratios suggest that indigenous organic matter and highly volatile materials were successfully collected. Except...

2017
Deyang Chen Fei Sun

Currently, researchers are mainly focusing the phase transitions, domain structures, domain wall functionalities, magneto electric coupling, and the potential applications in high-density ferroelectric non-volatile memories of ferroelectric materials [1-5]. However, there are relatively less research interests in the biomedical applications of ferroelectric materials which is very important to ...

Journal: :Journal of the American Chemical Society 2015
Michael G Campbell Sophie F Liu Timothy M Swager Mircea Dincă

Applications of porous metal-organic frameworks (MOFs) in electronic devices are rare, owing in large part to a lack of MOFs that display electrical conductivity. Here, we describe the use of conductive two-dimensional (2D) MOFs as a new class of materials for chemiresistive sensing of volatile organic compounds (VOCs). We demonstrate that a family of structurally analogous 2D MOFs can be used ...

Journal: :Science 2007
S W Squyres O Aharonson B C Clark B A Cohen L Crumpler P A de Souza W H Farrand R Gellert J Grant J P Grotzinger A F C Haldemann J R Johnson G Klingelhöfer K W Lewis R Li T McCoy A S McEwen H Y McSween D W Ming J M Moore R V Morris T J Parker J W Rice S Ruff M Schmidt C Schröder L A Soderblom A Yen

Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarsegrained lower unit lies under a finer-grained upper unit. Textural observations indicate that the lower strata were emplaced in an explosive event, and geochemical considerations favor an explosive volcanic o...

2015
Marina Ramos Arantzazu Valdés Ana Cristina Mellinas María Carmen Garrigós

New trends in beverage packaging are focusing on the structure modification of packaging materials and the development of new active and/or intelligent systems, which can interact with the product or its environment, improving the conservation of beverages, such as wine, juice or beer, customer acceptability, and food security. In this paper, the main nutritional and organoleptic degradation pr...

2001
X. YANG Q. CHEN J. ZENG J. S. ZHANG C. Y. SHAW

A numerical model has been developed to simulate volatile organic compound (VOC) emissions from “wet” coating materials. The model considers the VOC mass transfer process in the air and material-air interface, and diffusion in the material film and also in the substrate. Our numerical simulations confirmed that the emissions from “wet” materials applied to an absorptive substrate are dominated ...

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