scholarly journals Determination of Socle Series using the Condensation Method

2001 ◽  
Vol 31 (1-2) ◽  
pp. 163-178 ◽  
Author(s):  
Klaus Lux ◽  
Markus Wiegelmann
Keyword(s):  
Condensation Method

Determination of Citral in Essential Oils by the Barbituric Acid Condensation Method

1962 ◽  
Vol 45 (2) ◽  
pp. 475-502 ◽  
Author(s):  
J M Airth ◽  
B Stringer ◽  
W Skakum ◽  
Leo Levi
Keyword(s):  
Essential Oils ◽  
Barbituric Acid ◽  
Condensation Method

Stable Reagents for Determination of Serum Triglycerides by a Colorimetric Hantzsch Condensation Method

1973 ◽  
Vol 19 (3) ◽  
pp. 338-340 ◽  
Author(s):  
Lowell B Foster ◽  
Ralph T Dunn
Keyword(s):  
Glycerol Content ◽  
Serum Triglycerides ◽  
Condensation Method ◽  
Modified Method ◽  
Hantzsch Condensation

Abstract We describe a modified method for determining triglycerides in serum, in which alumina is used to adsorb interfering substances, and the glycerol content of triglycerides is determined colorimetrically. In contrast to all previous Hantzsch condensation procedures in which periodate and acetylacetone are used, the working periodate and the working acetylacetone reagents are stable for at least six months because they are differently formulated. The principle that governs this increased stability applies to all Hantzsch condensation methods for triglycerides.

scholarly journals Efficient determination and pesticide control by means of immobilization of acetylcholinesterase

2017 ◽  
Vol 36 (1) ◽  
Author(s):  
Elvan Hasanoğlu Özkan ◽  
Nurdan Kurnaz Yetim ◽  
Murat Gümüş ◽  
Nurşen Sarı ◽  
Ali Dişli
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Gel Permeation Chromatography ◽  
Condensation Method ◽  
Gel Permeation ◽  
Tetrazole Derivatives ◽  
Scanning Electron

Supports involving tetrazole (o/m/p-F-Tet-1H) were prepared to detect pesticides. This novel te-trazole including fluorine in different positions was attached to nanoparticles (2AEPS-(o/m/p-F-Tet-1H)) by a condensation method. Primarily, the tetrazole derivatives were characterized by 1H-NMR,13C-NMR and LC-MS. Then, nanoparticles were prepared by a condensation method in non-aqueous medium and characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, gel permeation chromatography. The enzymatic properties of immobilized acetylcholinesterase (AChE) were investigated for the determination of phosmet. This research is the first example.

scholarly journals Determinan Matriks FLScircr Bentuk Khusus n×n,n≥3 Menggunakan Metode Salihu

2019 ◽  
Vol 8 (1) ◽  
pp. 27-34
Author(s):  
Ade Novia Rahma ◽  
Kartika Swandayani ◽  
Corry Corazon Marzuki
Keyword(s):  
Applied Sciences ◽  
Mathematical Induction ◽  
Combined Method ◽  
Induction Method ◽  
Condensation Method ◽  
Dodgson Condensation

Determinan mempunyai peranan penting dalam menyelesaikan beberapa persoalan dalam matriks dan banyak dipergunakan dalam ilmu matematika maupun ilmu terapannya. Kondensasi Salihu merupakan salah satu metode yang dapat digunakan dalam menentukan determinan matriks yang memiliki ordo . Metode Kondensasi Salihu merupakan metode gabungan antara Kondensasi Dodgson dan Kondensasi Chio. Penelitian ini bertujuan untuk menentukan determinan matriks  bentuk khusus dengan menggunakan metode Kondensasi Salihu. Dalam menentukan determinan matriks  bentuk khusus terdapat beberapa langkah yang dikerjakan. Pertama diperhatikan pola detrminan matriks   bentuk khusus berode  sampai . Kedua pembuktian bentuk umum determinan menggunakan metode induksi matematika. Hasil yang diperoleh adalah didapatkannya bentuk umum dari matriks   bentuk khusus. Aplikasi juga dibahas didalam bentuk contoh. [Determinants have an important role in solving several problems in the matrics and are widely used in mathematics and applied sciences. Salihu condensation is one method that can be used to determine the determinant of a matrics that has an order  The Salihu Condensation Method is a combined method between Dodgson Condensation and Chio Condensation. This study aims to determine the determinant of a specially   matrics form using the Salihu Condensation method. In determining the determinant of a specially matrics there are several steps taken. First, attention the determinant pattern of a specially matrics in orde of 3×3 to 10×10. Second, prove of the general form of determinant using the mathematical induction method. The result obtained is the determination of the general determinant from of a specially matrics.]

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).

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

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