Some early chemical balances

1935 ◽  
Vol 54 (S1) ◽  
pp. S2-S10
Author(s):  
A. Barclay
Keyword(s):  
Chemical Balances

Laboratory Notes by Professor Tait a. On the Application of Sir W. Thomson's Dead-Beat Arrangement to Chemical Balances

1875 ◽  
Vol 8 ◽  
pp. 490-491
Author(s):  
Tait
Keyword(s):  
Chemical Balances

A considerable amount of time is lost in making an accurate weighing on account of the slowness of oscillation of the balance when the loads are nearly equal; and this loss of time is nearly proportional to the delicacy or sensitiveness of the balance. Hence it becomes a matter of importance to endeavour to bring the balance speedily to rest without, if possible, impairing its sensitiveness; as thus much time and labour would be saved in weighing. Several methods of applying gaseous friction for this purpose have been tried by me of late.

Magnetic Operation of Chemical Balances

1939 ◽  
Vol 10 (8) ◽  
pp. 231-233 ◽  
Author(s):  
John P. Blewett
Keyword(s):  
Chemical Balances

Benefits, Problems, and Characteristics of Home Aquarium Owners

1999 ◽  
Vol 84 (3) ◽  
pp. 998-1004 ◽  
Author(s):  
Aline H. Kidd ◽  
Robert M. Kidd
Keyword(s):  
Water Temperature ◽  
Stress Reduction ◽  
Expensive Equipment ◽  
The Usa ◽  
Current Popularity ◽  
Chemical Balances

Although tank fish are currently the most popular “pets” in the USA, literature reporting studies on the benefits, problems, and characteristics of home aquarium ownership is extremely limited. Because it seemed important to learn more about people who enjoy owning and caring for home aquaria, 50 men and 50 women were interviewed in several area stores which provide and sell living fish and adjunct products necessary for maintaining good home aquarium environments. Major problems reported by home aquarium owners were the expensive equipment, especially the tanks and controls for water temperature, circulation, and chemical balances, the tank maintenance, and tank cleanliness. Major benefits mentioned by such owners were the calming, relaxation, and stress-reduction effects of just watching fish which lessened anxieties and created a sense of serenity. These findings help to explain the current popularity of the live inhabitants of home aquaria.

Chemical Modeling of Fire Gases

1995 ◽  
Vol 13 (3) ◽  
pp. 214-223 ◽  
Author(s):  
Yoshio Tsuchiya
Keyword(s):  
Hazard Assessment ◽  
Equivalence Ratio ◽  
Combustion Products ◽  
Chemical Modeling ◽  
Incomplete Combustion ◽  
Fire Models ◽  
Mass Fractions ◽  
In Fire ◽  
Products Of Incomplete Combustion ◽  
Chemical Balances

When a fuel containing C, H, and O burns, CO2 and H2O are the major combustion products and, depending on the conditions, CO, unburnt gasified fuel, and other products of incomplete combustion are produced. In this paper, chemical modeling to calculate rates of generation and mass fractions of various products in reference to the fuel/O2 equivalence ratio is presented. In addition to chemical balances, empirical CO/CO 2 ratios are used. CO is con sidered to be the most significant factor for toxicity hazard assessment in build ing fires. This modeling provides generation rates and mass fractions of CO among other species of gases. This model can be used as a sub-model in fire models for estimating CO.

The Testing of Chemical Balances

1939 ◽  
Vol 11 (10) ◽  
pp. 581-582 ◽  
Author(s):  
Archibald Craig
Keyword(s):  
Chemical Balances
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