Results 1 to 10 of about 12,628 (230)

Atmospheric Abundances, Trends and Emissions of CFC-216ba, CFC-216ca and HCFC-225ca

Atmosphere, 2014
The first observations of the feedstocks, CFC-216ba (1,2-dichlorohexafluoropropane) and CFC-216ca (1,3-dichlorohexafluoropropane), as well as the CFC substitute HCFC-225ca (3,3-dichloro-1,1,1,2,2-pentafluoropropane), are reported in air samples collected
Corinna Kloss, Paul J Fraser, Carl A M Brenninkmeijer   +2 more
exaly   +3 more sources

Multi-kingdom metagenomic characterization of the gut bacteriome, mycobiome, and virome in chronic functional constipation [PDF]

Frontiers in Cellular and Infection Microbiology
BackgroundChronic functional constipation (CFC) is a common gastrointestinal disorder increasingly linked to gut microbiome dysbiosis. However, multi-kingdom metagenomic characterization of bacterial, fungal, and viral communities in CFC remains limited ...
Wen Sun, Yue Li, Jinwen Su, Shanliang Mao, Shuang Yang, Yindi Zhu, Yunhua Liu, Jie Ma, Wei You, Yan Zhang, Hongxing Guo, Guorui Xing, Shenghui Li, Qiulong Yan, Xingyi Ma, Xingyi Ma, Xingyi Ma   +16 more
doaj   +2 more sources

Shortcomings of the controlled foreign company legislation concerning foreign tax refund systems. [PDF]

PLoS ONE
The aim of this study is to demonstrate that the CFC tax rules are legally ineffective in relation to those of foreign countries that operate a tax refund system at the shareholder level of the CFC (e.g., Malta).
Thomas Kollruss
doaj   +2 more sources

Bayesian assessment of chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC) and halon banks suggest large reservoirs still present in old equipment [PDF]

Atmospheric Chemistry and Physics, 2022
Halocarbons contained in equipment such as air conditioners, fire extinguishers, and foams continue to be emitted after production has ceased. These “banks” within equipment and applications are thus potential sources of future emissions, and must be ...
M. J. Lickley, J. S. Daniel, E. L. Fleming, E. L. Fleming, S. Reimann, S. Solomon   +5 more
doaj   +1 more source

Efficient catalytic removal of COS and H2S over graphitized 2D micro-meso-macroporous carbons endowed with ample nitrogen sites synthesized via mechanochemical carbonization

Green Energy & Environment, 2022
Developing a suitable catalyst for the elimination of highly toxic carbonyl sulfide (COS) and hydrogen sulfide (H2S) is of great significance in terms of industrial safety and environmental protection.
Xun Kan, Guanqing Zhang, Yingying Luo, Fujian Liu, Yong Zheng, Yihong Xiao, Yanning Cao, Chak-tong Au, Shijing Liang, Lilong Jiang   +9 more
doaj   +1 more source

CM SAF Oransal Bulut Kapalılığı (CFC) Verisinin Başarımı ve Doğu Anadolu Gözlemevi (DAG) Yerleşkesi için Analizi

Journal of Advanced Research in Natural and Applied Sciences, 2021
Doğu Anadolu Gözlemevi (DAG) projesi 2011 yılında Erzurum’da başlatılmıştır. DAG’da 2021 yılı sonunda ilk ışığın alınmasıyla Türkiye'nin en büyük (4 m) optik ve ilk kızılötesi teleskobunun kurulum sürecini tamamlaması planlanmaktadır.
Cahit Yeşilyaprak, Kazım Kaba
doaj   +1 more source

Controlled foreign companies of Russian residents in the context of world trends

RUDN Journal of Law, 2021
The subject of this article is financial relations of the state and its tax residents with foreign assets (stock), as well as control over such companies through various legal mechanisms.
Evgenia E. Frolova, Ekaterina A. Tsepova
doaj   +1 more source

Temperature Dependent Infrared Cross Sections for CFC-11, CFC-12, CFC-13, CFC-14, CFC-22, CFC-113, CFC-114, and CFC-115

Journal of Atmospheric Chemistry, 1991
This report presents absorption cross sections at temperatures of 293, 273, 253, 233, 213 and 203 K for the chlorofluorocarbon species CFC-11 (CC13F), CFC-12 (CC12F2), CFC-13 (CC1F3), CFC-14 (CF4), CFC-22 (CHC1F2), CFC-113 (C2C13F13), CFC- 114 (C2C12F4), and CFC- 115 (C2C1F5). The infrared cross sections are those reported by McDaniel et al.
Massie, S, Goldman, A, Cantrell, C, Davidson, J, Shetter, R, Calvert, J   +5 more
openaire   +3 more sources

Stratospheric carbon isotope fractionation and tropospheric histories of CFC-11, CFC-12, and CFC-113 isotopologues [PDF]

Atmospheric Chemistry and Physics, 2020
Abstract. We present novel measurements of the carbon isotope composition of CFC-11 (CCl3F), CFC-12 (CCl2F2), and CFC-113 (CF2ClCFCl2), three atmospheric trace gases that are important for both stratospheric ozone depletion and global warming. These measurements were carried out on air samples collected in the stratosphere – the main sink region for ...
M. Thomas, M. Thomas, J. C. Laube, J. C. Laube, J. Kaiser, S. Allin, P. Martinerie, R. Mulvaney, A. Ridley, T. Röckmann, W. T. Sturges, E. Witrant   +11 more
openaire   +11 more sources

UV and infrared absorption spectra, atmospheric lifetimes, and ozone depletion and global warming potentials for CCl₂FCCl₂F (CFC-112), CCl₃CClF₂ (CFC-112a), CCl₃CF₃ (CFC-113a), and CCl₂FCF₃ (CFC-114a) [PDF]

Atmospheric Chemistry and Physics, 2016
The potential impact of CCl2FCF3 (CFC-114a) and the recently observed CCl2FCCl2F (CFC-112), CCl3CClF2 (CFC-112a), and CCl3CF3 (CFC-113a) chlorofluorocarbons (CFCs) on stratospheric ozone and climate is presently not well characterized. In this study,
M. E. Davis, M. E. Davis, M. E. Davis, F. Bernard, F. Bernard, M. R. McGillen, M. R. McGillen, E. L. Fleming, E. L. Fleming, J. B. Burkholder   +9 more
doaj   +1 more source