Cassini Plasma Spectrometer Investigation

Author(s):  
D. T. Young ◽  
B. L. Barraclough ◽  
J. J. Berthelier ◽  
M. Blanc ◽  
J. L. Burch ◽  
...  
Keyword(s):  
2005 ◽  
Vol 43 (5) ◽  
pp. 373-376 ◽  
Author(s):  
O. L. Vaisberg ◽  
L. A. Avanov ◽  
A. V. Leibov ◽  
V. N. Smirnov ◽  
J. Keller ◽  
...  

1996 ◽  
Author(s):  
David T. Young ◽  
Bruce L. Barraclough ◽  
Jean-Jacques Berthelier ◽  
M. Blanc ◽  
J. L. Burch ◽  
...  
Keyword(s):  

2002 ◽  
Vol 37 (9) ◽  
pp. 1173-1189 ◽  
Author(s):  
P. L. KOEHN ◽  
T. H. ZURBUCHEN ◽  
G. GLOECKLER ◽  
R. A. LUNDGREN ◽  
L. A. FISK

2021 ◽  
Author(s):  
Rahul Kumar Kushwaha ◽  
Ambresh Mallya ◽  
Dipen Sahu ◽  
Jaya Krishna Meka ◽  
Sheng-Lung Chou ◽  
...  

<p>Benzene (C<sub>6</sub>H<sub>6</sub>) ice has been observed in the Titan’s stratosphere [1], and benzonitrile (C<sub>6</sub>H<sub>5</sub>CN) is a possible constituent in the benzene and nitrogen-rich environment of Titan’s atmosphere [2]. The energetic processing of such aromatic molecules can synthesize large and complex aromatic molecules such as the Polycyclic Aromatic Hydrocarbons (PAHs). To-date a number of laboratory experiments have reported the formation of complex organics from the energetic processing of aromatic molecules [3-6]. In particular, Scanning Electron Microscopy (SEM) micrographs of the residues resulting from irradiated benzene ices are found to contain geometrically shaped particles [6]. Therefore, by employing electron microscopes, we can understand the physical nature of the dust leftover from the aromatic molecule irradiation.</p> <p>In the present investigation, we subjected benzonitrile ice made at 4 K to vacuum ultraviolet (9 eV) radiation at two beamlines, BL03 and BL21A2 of Taiwan Light Source at NSRRC, Taiwan. After irradiation, the ice was warmed to room temperature, which left a brownish residue on the Potassium Bromide (KBr) substrate. The VUV spectrum of the residue is observed to have characteristic aromatic signatures. The residue is then transferred to a quantifoil grid for High-Resolution Transmission Electron Microscope (HR- TEM) imaging. HR-TEM micrographs revealed the presence of graphene in the residue. This result suggests that N-graphene could be present in benzene and nitrogen-rich icy clouds of Titan. The high masses observed by the Cassini plasma spectrometer in Titan’s atmosphere could then be attributed to the presence of N-graphene along with the more common tholins [7].</p> <p><strong>References</strong></p> <p>[1] Vinatier S. et al. (2018) <em>Icarus, 310,</em> 89.</p> <p>[2] Loison J. C. et al. (2019) <em>Icarus 329,</em> 55.</p> <p>[3] Strazzulla G. et al. (1991) <em>A&A, 241</em>, 310.</p> <p>[4] Callahan M. P. et al. (2013) <em>Icarus, 226</em>, 1201.</p> <p>[5] James R. et al. (2019) <em>RSC Adv. 9</em> (10), 5453.</p> <p>[6] Rahul K. K. et al. (2020) <em>Spectrochim. Acta A, 231, </em>117797.</p> <p>[7] Rahul K. K. et al. (2020) <em>arXiv:2008.10011</em>.</p>


First Break ◽  
2008 ◽  
Vol 26 (6) ◽  
Author(s):  
G. Maros ◽  
L. Andrássy ◽  
L. Zilahi-Sebes ◽  
Z. Máthé

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Qi Zhou ◽  
Wenjia Guo ◽  
Yanan Jia ◽  
Jiancheng Xu

The effect of chromium (Cr) and iron (Fe) on prevalence of diabetes has received great attention. This study investigated serum and urinary Cr and Fe levels among patients with impaired fasting glucose (IFG), impaired glucose tolerance (IGT), type 1 diabetes (T1D), and type 2 diabetes (T2D) in the Northeast Chinese population. From January 2010 to October 2011, patients with IFG (n=12), IGT (n=15), T1D (n=25), T2D (n=137) and healthy controls (n=50) were enrolled in the First Hospital of Jilin University. Trace elements were detected using an inductively coupled plasma spectrometer. Serum Cr levels decreased in T2D without complications, diabetic retinopathy (DR), diabetic peripheral neuropathy (DPN), and diabetic nephropathy (DN) (P<0.05). The urinary Cr level in T1D was the highest of all, which significantly exceeded those of the T2D groups with and without complications. No significant differences of serum Fe levels were found among all groups. The urinary Fe level of T1D was significantly increased (P<0.05). The correlation between serum Cr and serum Fe in T2D was obviously positive (P<0.05). One month of simvastatin therapy exerted no effects on serum or urinary Cr and Fe levels. These results suggest the potential role of Cr and Fe in diabetes should receive attention.


2004 ◽  
pp. 1-112 ◽  
Author(s):  
D. T. Young ◽  
J. J. Berthelier ◽  
M. Blanc ◽  
J. L. Burch ◽  
A. J. Coates ◽  
...  
Keyword(s):  

2010 ◽  
Vol 115 (A5) ◽  
pp. n/a-n/a ◽  
Author(s):  
R. J. Wilson ◽  
R. L. Tokar ◽  
W. S. Kurth ◽  
A. M. Persoon

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