Far-Infrared Surveyor on AKARI: in-orbit characterization of transient response and radiation effects of Ge:Ga array detectors

2008 ◽  
Author(s):  
Hidehiro Kaneda ◽  
Toyoaki Suzuki ◽  
Alain Coulais ◽  
Yasuo Doi ◽  
Boris Fouks ◽  
...  
1988 ◽  
Author(s):  
Michael E. Thomas ◽  
Richard I. Joseph ◽  
George J. Simonis ◽  
Michael Stead
Keyword(s):  

2012 ◽  
Vol 4 (6) ◽  
pp. 2353-2371 ◽  
Author(s):  
H. K. Hisham ◽  
G. A. Mahdiraji ◽  
A. F. Abas ◽  
M. A. Mahdi ◽  
F. R. M. Adikan

1991 ◽  
Vol 59 (8) ◽  
pp. 893-895 ◽  
Author(s):  
B. I. Greene ◽  
J. F. Federici ◽  
D. R. Dykaar ◽  
R. R. Jones ◽  
P. H. Bucksbaum

2009 ◽  
Author(s):  
Luca Palchetti ◽  
Giovanni Bianchini ◽  
Bruno Carli ◽  
Carmine Serio

Author(s):  
Luqin Yang ◽  
Jinguang Wu ◽  
Qiao Zhou ◽  
Jiang Bian ◽  
Yanmin Yang ◽  
...  

1983 ◽  
Vol 245 (2) ◽  
pp. G236-G241
Author(s):  
G. W. Kidder

Using hyperbaric conditions previously shown to give improved oxygen delivery to the chambered dogfish gastric mucosa, experiments were performed to further characterize this tissue under these conditions. Removal of Cl- depressed but did not abolish acid secretion, raised the transepithelial resistance, and caused the potential to become more negative with reference to the mucosal surface. Voltage clamping to -60 mV inhibited secretion significantly; voltage clamping to +60 mV sometimes gave a stimulation. There was no long time-constant transient response to current passage. Under hyperbaric conditions, addition of the normal 350 mM urea content of elasmobranch plasma stimulated secretion. A further increase in partial pressure of oxygen (PO2) above 1.9 atm had no effect on secretion. The current-voltage plot showed two breakpoints, one about -23 mV and a second (not always detectable) at +50 mV; the negative breakpoint was stable as PO2 changed from 0.9 to 1.9 atm. Many of these observations are different from those reported for normabaric tissue and closely resemble those in the isolated frog gastric mucosa.


Author(s):  
Anthony Wilson ◽  
Matt Von Thun ◽  
Brian Baranski ◽  
Rex Anderson ◽  
Aaron Turnbull
Keyword(s):  

1997 ◽  
Vol 50 (6) ◽  
pp. 539 ◽  
Author(s):  
Graham A. Bowmaker ◽  
Effendy ◽  
Robert D. Hart ◽  
John D. Kildea ◽  
Brian W. Skelton ◽  
...  

Syntheses and room-temperature single crystal X-ray structure determinations are recorded for adducts [M(EPh3)4] (ClO4), M = Cu, E = As (1), Sb (2); M = Ag, E = As (3), Sb (4), enabling comparison with analogous, previously studied MP4 and MN4 environments. The four complexes so characterized all crystallize in the familiar rhombohedral R-3 array (a ≈ 14·4, c ≈ 52 Å, hexagonal setting) with the metal and chlorine atoms located on crystallographic threefold axes. In these arrays Cu–E (axial, off axis) are 2·493(2), 2·533(1) for (1), and 2·572(1), 2·577(1) Å for (2), the disparity in the two independent M-E distances being diminished relative to those of previously studied phosphorus analogues, perhaps in consequence of increasing E size. In (3) and (4), some cation disorder is evident in respect of the ligand pnictide atom (E); for the major components Ag-E are 2·652(3), 2·680(2) in (3); 2·732(2), 2·7295(8) Å in (4). Problems associated in defining the metal atom environment geometries in the latter are, nevertheless, more satisfactorily overcome in two further determinations of nitrate salts: [Ag(SbPh3)4] (NO3) (5) is of the rhombohedral family with no cation core disorder, Ag–E (axial, off axis) being 2·720(4), 2·725(2) Å, while the structural characterization of a 1 : 4 triphenylarsine adduct of silver nitrate is recorded as its tetraethanol solvate, namely [Ag(AsPh3)4] (NO3).~ 4C2H5OH(6), monoclinic, C2/c, a 18·373(4), b 20·786(5), c 21·070(8) Å, β 108·18(3)°, Z = 4 f.u. The silver atom of the [Ag(AsPh3)4]+cation unusually lies on a crystallographic 2 (rather than a 3 ) axis of the incipiently23 (T) array, with Ag-As 2·649(2), 2·650(2) Å and As-Ag-As ranging from 108·22(4) to 111·41(6)°. The structure determination of a chloroform solvate of (2), denoted (2a), of low precision, is noted, together with the structure of an interesting artefact, isomorphous with the rhombohedral oxoanion array, modelled as [Ag(PPh3)4]2 (SiF6).py (7). Bands in the far-infrared spectra of [M(AsPh3)4] (ClO4) are assigned to v(MAs) vibrations at 119 (M = Cu) and 103 cm¯1 (M = Ag); this produces a more consistent picture of the variation in the wavenumbers of the v(ME) modes in [M(EPh3)4]+ compounds than was available previously.


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