Determination of 1,1-dimethylhydrazine (UDMH) in water by HPLC-UV using micellar catalysis for preparation of the derivatives

2020 ◽  
Vol 86 (9) ◽  
pp. 14-23
Author(s):  
Yu. V. Timchenko ◽  
I. V. Belikova ◽  
A. D. Smolenkov ◽  
A. V. Pirogov ◽  
O. A. Shpigun
Keyword(s):  
Micellar Catalysis

Spectrophotometric determination of cyanide by chromogenic disulfide in water using micellar catalysis

2010 ◽  
Vol 65 (7) ◽  
pp. 704-706 ◽  
Author(s):  
A. A. Druzhinin ◽  
I. A. Lozanov ◽  
M. Yu. Prosvetova ◽  
K. V. Veksler
Keyword(s):  
Spectrophotometric Determination ◽  
Micellar Catalysis

Micellar Catalysis and Product Stabilization in Hydrazone Formation Reactions and Micellar-Modified Determination of Hydrazine and Phenylhydrazine

1994 ◽  
Vol 66 (14) ◽  
pp. 2232-2239 ◽  
Author(s):  
Anatoly K. Yatsimirsky ◽  
Natalia T. Yatsimirskaya ◽  
Svetlana B. Kashina
Keyword(s):  
Micellar Catalysis

Gas diffusion and micellar catalysis in the flow injection determination of sulfite

The Analyst ◽  
1994 ◽  
Vol 119 (11) ◽  
pp. 2447-2452 ◽  
Author(s):  
Alma María García Prieto ◽  
José Luis Pérez Pavón ◽  
Bernardo Moreno Cordero
Keyword(s):  
Flow Injection ◽  
Gas Diffusion ◽  
Micellar Catalysis

Micellar catalysis in kinetic multicomponent analysis: simultaneous determination of binary mixtures of cyanide, sulfide, and sulfite ions

1993 ◽  
Vol 65 (14) ◽  
pp. 1897-1902 ◽  
Author(s):  
Victoria. Gonzalez ◽  
Bernardo. Moreno ◽  
Dolores. Sicilia ◽  
Soledad. Rubio ◽  
Dolores. Perez-Bendito
Keyword(s):  
Simultaneous Determination ◽  
Binary Mixtures ◽  
Micellar Catalysis ◽  
Multicomponent Analysis ◽  
Sulfite Ions

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

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