Laser spectroscopic methods for the characterization of open and closed follicles

2004 ◽  
Vol 1 (1) ◽  
pp. 46-49 ◽  
Author(s):  
N Otberg ◽  
H Richter ◽  
A Knuttel ◽  
H Schaefer ◽  
W Sterry ◽  
...  
Keyword(s):  
Spectroscopic Methods ◽  
Laser Spectroscopic

scholarly journals Laser spectroscopic characterization of the nuclear-clock isomer 229mTh

Nature ◽  
2018 ◽  
Vol 556 (7701) ◽  
pp. 321-325 ◽  
Author(s):  
Johannes Thielking ◽  
Maxim V. Okhapkin ◽  
Przemysław Głowacki ◽  
David M. Meier ◽  
Lars von der Wense ◽  
...  
Keyword(s):  
Spectroscopic Characterization ◽  
Laser Spectroscopic

scholarly journals Characterization of antioxidant olive oil biophenols by spectroscopic methods

2010 ◽  
Vol 91 (2) ◽  
pp. 309-314 ◽  
Author(s):  
Fátima Paiva-Martins ◽  
Vera Rodrigues ◽  
Rita Calheiros ◽  
Maria PM Marques
Keyword(s):  
Olive Oil ◽  
Spectroscopic Methods

Measurement of Dysprosium Stark Width and the Electron Impact Width Parameter

2018 ◽  
Vol 73 (2) ◽  
pp. 203-213 ◽  
Author(s):  
Jhonatha R. dos Santos ◽  
Jonas Jakutis Neto ◽  
N. Rodrigues ◽  
M.G. Destro ◽  
José W. Neri ◽  
...  
Keyword(s):  
Electron Density ◽  
Impact Parameter ◽  
Plasma Temperature ◽  
Spectral Lines ◽  
Emission Lines ◽  
Spectroscopic Methods ◽  
Species Concentration ◽  
The Impact ◽  
Stark Width

In this work, we suggest a methodology to determine the impact parameter for neutral dysprosium emission lines from the characterization of the plasma generated by laser ablation in a sealed chamber filled with argon. The procedure is a combination of known consistent spectroscopic methods for plasma temperature determination, electron density, and species concentration. With an electron density of 3.1 × 1018 cm–3 and temperature close to 104 K, we estimated the impact electron parameter for nine spectral lines of the neutral dysprosium atom. The gaps in the impact parameter data in the literature, mainly for heavy elements, stress the importance of the proposed method.

Characterization of chemical perfection of YAG:Nd crystals with absorption spectroscopic methods

1987 ◽  
Vol 22 (4) ◽  
pp. 599-605 ◽  
Author(s):  
Hj. Bernhardt ◽  
R. Rauch ◽  
K. Toepfer ◽  
G. Wehrhan
Keyword(s):  
Spectroscopic Methods

scholarly journals Synthesis and characterization of nickel-doped ceria nanoparticles with improved surface reducibility

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40712-40719 ◽  
Author(s):  
Wassila Derafa ◽  
Fotios Paloukis ◽  
Basma Mewafy ◽  
Walid Baaziz ◽  
Ovidiu Ersen ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Complexes ◽  
Synthesis And Characterization ◽  
Spectroscopic Methods ◽  
Ceria Nanoparticles ◽  
Doped Ceria

Nickel-doped ceria nanoparticles (Ni0.1Ce0.9O2−x NPs) were fabricated from Schiff-base complexes and characterized by various microscopic and spectroscopic methods.

Isolation and characterization of new heme analogues with weakly coordinating anions: Formation of monoimidazole complex, OEPFe(Im)(SbF6)

2007 ◽  
Vol 11 (09) ◽  
pp. 691-696 ◽  
Author(s):  
Mozhgan Khorasani-Motlagh ◽  
Meissam Noroozifar ◽  
Asieh Moodi
Keyword(s):  
Differential Pulse ◽  
Differential Pulse Polarography ◽  
Spectroscopic Methods ◽  
H Nmr ◽  
Weakly Coordinating Anions ◽  
Axial Ligands ◽  
Isolation And Characterization ◽  
Pulse Polarography ◽  
Weakly Coordinating

The effects of weakly coordinating anions, BF 4, AsF 6 and SbF 6, as axial ligands on the formation and coordination chemistry of heme analogues have been examined. Three new five-coordinate and stable iron(III) heme analogues, OEPFeX , where OEP is the dianion of octaethylporphyrin and X = BF 4, AsF 6 and SbF 6, have been isolated. The compounds have been characterized by different spectroscopic methods as well as elemental analysis. 1 H NMR spectroscopy and magnetic moment measurements show that the OEPFeX are paramagnetic and iron is five-coordinate. In addition, monoimidazole ferric-porphyrin complex, OEPFe ( Im )( SbF 6) has been prepared in solution, by starting with OEPFe ( SbF 6). The electrochemical properties of OEPFeX ( X = BF 4, AsF 6, SbF 6) have been studied by cyclic voltammetry and differential pulse polarography.

scholarly journals Adsorption of Chromium(VI) Ions on to TiO2 from Aqueous Solution

1998 ◽  
Vol 16 (2) ◽  
pp. 117-126 ◽  
Author(s):  
Fu Hongxiang ◽  
Lu Gongxuan ◽  
Li Shuben
Keyword(s):  
Heavy Metal Ions ◽  
Ion Concentration ◽  
Spectroscopic Methods ◽  
Ion Adsorption ◽  
Adsorption Efficiency ◽  
Organic Species ◽  
Chromium Vi ◽  
Ft Ir ◽  
Ir Spectroscopic

The study of the adsorption of the CrVI ion on to TiO2 not only provides information on the removal of heavy metal ions from polluted aqueous solutions; but is also useful for further investigation of the photocatalytic decontamination of the CrVI ion or of CrVI–organic species which co-exist as pollutants with TiO2 when the latter is used as a stable and highly efficient photocatalyst. It has been found that dark adsorption of the CrVI ion on to TiO2 is mainly dependent on the acidity of the system and the initial concentration of the CrVI ion. As the pH of the system increases, so the extent of adsorption of the CrVI ion decreases. The greatest adsorption was obtained with an initial CrVI ion concentration of ca. 300 μmol/l. The presence of phosphate or acetate ions in the system dramatically decreases the adsorption efficiency of the CrVI ion. In contrast, the addition of formic acid leads to a limited increase in the extent of CrVI ion adsorption. Other organic ions and organic compounds examined showed no interference in CrVI ion adsorption. FT-IR spectroscopic methods were used for the characterization of CrVI ion adsorption on to TiO2.

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