A New Apparatus for the Direct Measurement of Radioactivity

1914 ◽  
Vol 78 (2028supp) ◽  
pp. 309-310
Keyword(s):  
Direct Measurement ◽  
New Apparatus

A new apparatus for the direct measurement of otter trawling effects on the epibenthic and hyperbenthic macrofauna

2003 ◽  
Vol 83 (6) ◽  
pp. 1363-1368 ◽  
Author(s):  
P.T. Koulouri ◽  
C.G. Dounas ◽  
A.S. Eleftheriou
Keyword(s):  
Continental Shelf ◽  
Mechanical System ◽  
Direct Measurement ◽  
Eastern Mediterranean ◽  
Otter Trawl ◽  
Continuous Record ◽  
New Apparatus ◽  
Surface Vessel

A towed trawl simulator sledge (TTSS2) for collecting quantitatively small macrobenthic animals disturbed by the passage of otter trawl groundrope typical of the local fishery is described and illustrated. The TTSS2 was towed from a surface vessel at a speed within the range of commercial trawls, incorporating three sampling nets that open and close by means of an electro-mechanical system. An odometer in contact with the seabed provided a continuous record of the trawled ground. The degree of efficiency of the TTSS2—by means of the attached groundrope that stirs up the surface of the bottom ahead of the nets—was tested in the northern continental shelf of Crete (eastern Mediterranean). Additional trials with a much heavier groundrope were also performed. Analysis and comparison of TTSS2 samples with endobenthic, hyperbenthic and planktonic samples collected by means of conventional sampling gears indicate the presence of a well-defined and distinct fauna in the plume of resuspended sediment behind the groundrope.

The direct measurement of the isothermal Joule-Thomson coefficient for gases

1953 ◽  
Vol 218 (1132) ◽  
pp. 133-143 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Direct Measurement ◽  
Direct Measurements ◽  
New Apparatus ◽  
Thomson Coefficient

A new apparatus is described for measuring the isothermal Joule-Thomson coefficient. The results obtained agree well with other direct measurements and also with adiabatic Joule-Thomson and compressibility data. The gases which have been investigated are nitrogen, ethylene, carbon dioxide and nitrous oxide, in the range 0 to 45° C and 0 to 45 atm.

Direct Measurement of the Listening of Hearing-Impaired Children

1970 ◽  
Vol 13 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Mary Mira
Keyword(s):  
Direct Measurement ◽  
Continuous Measurement ◽  
Hearing Impaired ◽  
Reinforcement System ◽  
School Aged Children ◽  
Conjugate Reinforcement ◽  
Impaired Children ◽  
Hearing Impaired Children

Listening, a significant dimension of the behavior of hearing-impaired children, may be measured directly by recording childrens' responses to obtain audio narrations programmed via a conjugate reinforcement system. Twelve hearing-impaired, school-aged children responded in varying ways to the opportunity to listen. Direct and continuous measurement of listening has relevance for evaluation of remediation methods and for discovery of variables potentially related to listening.

New Apparatus for Preserving Beer

1876 ◽  
Vol 1 (4supp) ◽  
pp. 57-57
Author(s):  
Louis Weinmar
Keyword(s):  
New Apparatus
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