نتایج جستجو برای: volatile materials

تعداد نتایج: 473168  

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

2003
Mark Dietenberger

The combustion properties of various biomass and wood materials from various references and from our laboratory were reanalysed. The net heat of combustion for cellulosic materials was found to be 13.23 kJ/g times the ratio of stoichiometric oxygen mass to fuel mass, ro, regardless of the material composition. Bomb calorimeter data for original, charred and volatilized material components provi...

Journal: :Atmosphere 2021

The control of air quality in museum showcases is a growing issue for the conservation displayed artefacts. Inside an airtight showcase, volatile substances may rapidly concentrate and favor or directly cause degradation other unwanted phenomena on objects. role materials used construction display cases as source pollutants compounds dangerous cultural heritage integrity here reviewed with illu...

Journal: :Neuromorphic computing and engineering 2021

Abstract Photonic integrated circuits currently use platform intrinsic thermo-optic and electro-optic effects to implement dynamic functions such as switching, modulation other processing. Currently, there is a drive field programmable photonic circuits, need which only magnified by new neuromorphic quantum computing applications. The most promising non-volatile components employ phase change m...

2001
Doyun Won Daniel M. Sander C. Y. Shaw Richard L. Corsi

Adsorption and desorption by indoor surface materials can have significant impacts on the level of volatile organic compounds (VOCs) indoors. The surface sink model (SSM) was developed to account for these interactions in an indoor air quality model. Two types of scale-up experiments were conducted to validate the SSM that was developed based on small-scale chamber experiments. Conflicting resu...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Edwin A Bergin Geoffrey A Blake Fred Ciesla Marc M Hirschmann Jie Li

We use the C/N ratio as a monitor of the delivery of key ingredients of life to nascent terrestrial worlds. Total elemental C and N contents, and their ratio, are examined for the interstellar medium, comets, chondritic meteorites, and terrestrial planets; we include an updated estimate for the bulk silicate Earth (C/N = 49.0 ± 9.3). Using a kinetic model of disk chemistry, and the sublimation/...

2015
Albert van Breemen Tomasz Zaba Vsevolod Khikhlovskyi Jasper Michels Rene Janssen Martijn Kemerink Gerwin Gelinck

Albert van Breemen, Tomasz Zaba, Vsevolod Khikhlovskyi, Jasper Michels, Rene Janssen, Martijn Kemerink and Gerwin Gelinck, Surface Directed Phase Separation of Semiconductor Ferroelectric Polymer Blends and their Use in Non-Volatile Memories, 2015, Advanced Functional Materials, (25), 2, 278-286. http://dx.doi.org/10.1002/adfm.201401896 Copyright: Wiley-VCH Verlag http://www.wiley-vch.de/publis...

Journal: :Bioscience, biotechnology, and biochemistry 2008
Kuniyoshi Shimizu Mayumi Gyokusen Shingo Kitamura Takahiro Kawabe Tomoaki Kozaki Keita Ishibashi Ryusuke Izumi Wataru Mizunoya Koichiro Ohnuki Ryuichiro Kondo

This study examined the effects of odors on sustained attention during a vigilance task. Two essential oils (lavender and eucalyptus) and two materials (l-menthol and linalyl acetate) were compared with a control. The increase in reaction time was significantly lower with lavender than with the control. The results suggest that the administration of lavender helped to maintain sustained attenti...

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