Stability and Reactivity of Sulfur Compounds against Copper in Insulating Mineral Oil: Definition of a Corrosiveness Ranking

2014 ◽  
Vol 53 (21) ◽  
pp. 8675-8684 ◽  
Author(s):  
Maria Concetta Bruzzoniti ◽  
Rosa Maria De Carlo ◽  
Corrado Sarzanini ◽  
Riccardo Maina ◽  
Vander Tumiatti
Keyword(s):  
Mineral Oil ◽  
Sulfur Compounds ◽  
Definition Of

Separation of Sulfur Compounds from Mineral Oil Fractions

1958 ◽  
Vol 50 (6) ◽  
pp. 943-946
Author(s):  
James Jezl ◽  
Archibald Stuart
Keyword(s):  
Mineral Oil ◽  
Sulfur Compounds ◽  
Oil Fractions

ChemInform Abstract: Sulfur Compounds of Mineral Oil. Part 18. Dialkyldibenzothiophenes.

ChemInform ◽  
2010 ◽  
Vol 24 (45) ◽  
pp. no-no
Author(s):  
F. BOBERG ◽  
W. BRUNS ◽  
D. MUSSHOFF
Keyword(s):  
Mineral Oil ◽  
Sulfur Compounds

Addressing students’ misconceptions of renal clearance

2004 ◽  
Vol 28 (4) ◽  
pp. 210-212 ◽  
Author(s):  
Daniel Richardson ◽  
Dexter Speck
Keyword(s):  
Renal Clearance ◽  
Mineral Oil ◽  
The One ◽  
Definition Of

Renal clearance is one of the more difficult concepts for students of physiology to learn. We hypothesized that this difficulty is rooted in a student’s misunderstanding of virtual volume. This was tested by having students select from several drawings the one they thought plasma would look like after a certain volume of it has been cleared of sodium by the kidneys. About half the participating students selected plasma pictured as having a certain volume of it devoid of sodium molecules. That is, their misconception of clearance seemed to be due to a lack of understanding about virtual volume, a deficiency which is reinforced by the classic definition of clearance. To address this misconception, a demonstration was devised in which a beaker of concentrated colored water was used to represent plasma before renal clearance, a beaker of the same concentrated colored water in which the top third had been replaced by clear mineral oil was used to represent what the definition of clearance said would happen to plasma after a third of it had been cleared of sodium, and a beaker of dilute colored water was used to represent what really happens to plasma when a certain volume of it is cleared of a solute. Incorporating this demonstration into discussions of renal clearance helped students to understand this concept, as evidenced by improved scores on related questions.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

2.2. Working Group 2: Conceptual Definitions of Reference Coordinate Systems for Earth Dynamics

1975 ◽  
Vol 26 ◽  
pp. 21-26
Keyword(s):  
Coordinate System ◽  
Working Group ◽  
General Character ◽  
Coordinate Systems ◽  
Reference Coordinate System ◽  
Group 2 ◽  
Definition Of ◽  
Earth Dynamics

An ideal definition of a reference coordinate system should meet the following general requirements:1. It should be as conceptually simple as possible, so its philosophy is well understood by the users.2. It should imply as few physical assumptions as possible. Wherever they are necessary, such assumptions should be of a very general character and, in particular, they should not be dependent upon astronomical and geophysical detailed theories.3. It should suggest a materialization that is dynamically stable and is accessible to observations with the required accuracy.

Symbiotic Stars at Optical, Infrared and Radio Wavelengths

1979 ◽  
Vol 46 ◽  
pp. 125-149 ◽  
Author(s):  
David A. Allen
Keyword(s):  
Temperature Regime ◽  
Type Star ◽  
Stellar Systems ◽  
Symbiotic Stars ◽  
Lower Excitation ◽  
Definition Of ◽  
Original Type

No paper of this nature should begin without a definition of symbiotic stars. It was Paul Merrill who, borrowing on his botanical background, coined the termsymbioticto describe apparently single stellar systems which combine the TiO absorption of M giants (temperature regime ≲ 3500 K) with He II emission (temperature regime ≳ 100,000 K). He and Milton Humason had in 1932 first drawn attention to three such stars: AX Per, CI Cyg and RW Hya. At the conclusion of the Mount Wilson Ha emission survey nearly a dozen had been identified, and Z And had become their type star. The numbers slowly grew, as much because the definition widened to include lower-excitation specimens as because new examples of the original type were found. In 1970 Wackerling listed 30; this was the last compendium of symbiotic stars published.

Sign in / Sign up

Export Citation Format

Share Document