Student laboratory experiments illustrating the physiological interactions of bilirubin

1985 ◽  
Vol 13 (1) ◽  
pp. 31-33 ◽  
Author(s):  
M Shanley ◽  
J Nagyvary
1966 ◽  
Vol 22 (3) ◽  
pp. 723-730 ◽  
Author(s):  
Richard D. Walk

Two motion picture films for use in student laboratory courses are described. The film on the “span of attention” showed 4 to 13 black dots on a white field at two exposure intervals for 100 trials. The film on the influence of word frequency on perception presented 15 words in a random order with the ascending method of limits, more adequate exposure conditions on each successive exposure until each word had been shown three times. Results from use in laboratory sections are given for each film. The laboratory film is an inexpensive method of increasing the range and depth of materials available to the laboratory instructor.


Author(s):  
Brandon Boesch

In this essay, I will expand the philosophical discussion about the representational practice in science to examine its role in science education through four case studies. The cases are of what I call ‘educational laboratory experiments’ (ELEs), performative models used representationally by students to come to a better understanding of theoretical knowledge of a scientific discipline. The studies help to demonstrate some idiosyncratic features of representational practices in science education, most importantly a lack of novelty and discovery built into the ELEs as their methodology is solidified when it becomes a widely spread educational tool within a discipline. There is thus an irreducible role for the historical development of ELEs in understanding their representational nature and use. The important role of the historical development of ELEs leads to an interesting way that educators can use ELEs as a means of connecting students to important historical developments within their disciplines.


2000 ◽  
Author(s):  
W. Johnstone ◽  
Brian Culshaw ◽  
Douglas Walsh ◽  
David G. Moodie ◽  
Iain S. Mauchline

1999 ◽  
Vol 173 ◽  
pp. 365-370
Author(s):  
Kh.I. Ibadinov

AbstractFrom the established dependence of the brightness decrease of a short-period comet dependence on the perihelion distance of its orbit it follows that part of the surface of these cometary nuclei gradually covers by a refractory crust. The results of cometary nucleus simulation show that at constant insolation energy the crust thickness is proportional to the square root of the insolation time and the ice sublimation rate is inversely proportional to the crust thickness. From laboratory experiments resulted the thermal regime, the gas productivity of the nucleus, covering of the nucleus by the crust, and the tempo of evolution of a short-period comet into the asteroid-like body studied.


2010 ◽  
Vol 9 (2) ◽  
pp. 69-78 ◽  
Author(s):  
David De Cremer ◽  
Maarten Wubben

The present research examined how voice procedures and leader confidence affect participants’ negative emotions and willingness to withdraw. It was predicted that receiving voice would be valued out of instrumental concerns, but only when the enacting leader was high in confidence. Two laboratory experiments indeed showed an interaction between type of voice (pre-decisional vs. post-decisional) and leader’s confidence (low vs. high) on participants’ negative emotions and willingness to withdraw. In particular, post-decision voice only led to more negative responses than did pre-decision voice when the enacting leader was high in confidence. Negative emotions mediated this interaction effect of type of voice on willingness to withdraw. Implications for integrating the leadership and procedural justice literatures are discussed.


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