A Differential Method Employing Variable Heaters for the Determination of the Specific Heats of Solutions, with Results for Ammonium Nitrate at 25°

1936 ◽  
Vol 58 (11) ◽  
pp. 2118-2126 ◽  
Author(s):  
Frank T. Gucker ◽  
Fred D. Ayres ◽  
T. Richard Rubin
Keyword(s):  
Ammonium Nitrate ◽  
Differential Method ◽  
Specific Heats

N and P on-line meters: requirements, maintenance and stability

1996 ◽  
Vol 33 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Henrik A. Thomsen ◽  
Kenneth Kisbye
Keyword(s):  
Sample Preparation ◽  
Response Time ◽  
Ammonium Nitrate ◽  
State Of The Art ◽  
List Price ◽  
User Friendliness ◽  
On Line ◽  
The Cost ◽  
Preparation Design

State-of-the-art on-line meters for determination of ammonium, nitrate and phosphate are presented. The on-line meters employ different measuring principles and are available in many different designs differing with respect to size, calibration and cleaning principle, user-friendliness, response time, reagent and sample consumption. A study of Danish experiences on several plants has been conducted. The list price of an on-line meter is between USD 8000 and USD 35,000. To this should be added the cost of sample preparation, design, installation and running-in. The yearly operating for one meter are in the range of USD 200-2500 and the manpower consumption is in the range of 1-5 hours/month. The accuracy obtained is only slightly smaller than the accuracy on collaborative laboratory analyses, which is sufficient for most control purposes.

Specific heats of polymer powders by differential scanning calorimetry

1982 ◽  
Vol 60 (14) ◽  
pp. 1853-1856 ◽  
Author(s):  
Eva I. Vargha-Butler ◽  
A. Wilhelm Neumann ◽  
Hassan A. Hamza
Keyword(s):  
Differential Scanning Calorimetry ◽  
Specific Heat ◽  
Scanning Calorimetry ◽  
Temperature Range ◽  
Specific Heats ◽  
Powdered Form ◽  
Polymer Powders

The specific heats of five polymers were determined by differential scanning calorimetry (DSC) in the temperature range of 300 to 360 K. The measurements were performed with polymers in the form of films, powders, and granules to clarify whether or not DSC specific heat values are dependent on the diminution of the sample. It was found that the specific heats for the bulk and powdered form of the polymer samples are indistinguishable within the error limits, justifying the determination of specific heats of powders by means of DSC.

Product Bionics Form Design Based on Users’ Kansei Image

2010 ◽  
Vol 37-38 ◽  
pp. 910-914 ◽  
Author(s):  
Lei Ding ◽  
Jian Ming Che ◽  
Xiao Fei Dong
Keyword(s):  
Clustering Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Differential Method ◽  
Kansei Engineering ◽  
Engineering Theory ◽  
Form Design ◽  
Form Features ◽  
Basic Standard

Based on users’ kansei image and kansei engineering theory, a method on product bionics form design is presented. Firstly, users’ kansei information about product and bionics objects is extracted from semantic differential method, which is the basic standard for determination of the best bionics object. Then by adopting clustering analysis and fuzzy comprehensive evaluation, the product form features and bionics objects’ main features are acquired and combined to design products. Finally, the optimal design is selected through comprehensive evaluation. As an example, case of intelligent electric rice cooker design indecates that this method is valid and practical.

scholarly journals STUDIES ON RDX AND RELATED COMPOUNDS: IX. DETERMINATION OF NITRIC ACID AND ACETIC ANHYDRIDE IN BACHMANN LIQUORS

1953 ◽  
Vol 31 (3) ◽  
pp. 201-203
Author(s):  
R. H. Betts ◽  
R. S. Stuart ◽  
C. A. Winkler
Keyword(s):  
Nitric Acid ◽  
Acetic Anhydride ◽  
Ammonium Nitrate ◽  
Routine Analysis ◽  
Calcium Hypochlorite ◽  
Electrometric Method ◽  
Direct Titration ◽  
Related Compounds ◽  
External Indicator

An electrometric method for determination of nitric acid in RDX(B) liquors has been developed. The method is not largely affected by ammonium nitrate and acetic anhydride. A precision of ± 0.5% may be readily obtained. Acetic anhydride in RDX(B) liquors may be determined by direct titration with standard aniline–toluene solution at 0 °C., using calcium hypochlorite as an external indicator. In routine analysis, a precision of ± 2% may be obtained.

The Determination of Diagnostic Ultrasound Intensities Using Ammonium Nitrate Solutions

1973 ◽  
Vol 5 (2) ◽  
pp. 77-88 ◽  
Author(s):  
H.G. Trier ◽  
H. Hagemann ◽  
O. Hockwin ◽  
R. Reuter ◽  
G. Geissler
Keyword(s):  
Ammonium Nitrate ◽  
Diagnostic Ultrasound ◽  
Nitrate Solutions
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