ambient content
Recently Published Documents


TOTAL DOCUMENTS

2
(FIVE YEARS 1)

H-INDEX

1
(FIVE YEARS 0)

Abundance ◽  
2021 ◽  
pp. 93-124
Author(s):  
Pablo J. Boczkowski

Chapter 4 centers on news reception. The survey indicates that broadcast media represent the dominant source of information and that socioeconomic status is more important in predicting patterns of news consumption than age and gender. The interviews highlight the continued centrality of routines that organize reception practices. These routines are ambient and derivative. In addition, there is a widespread assumption of intentionality in the reporting of current events and the perception that bias in the resulting stories is not the exception but the norm. There is also a strongly negative affect that is tied to the experience of consuming news. The chapter concludes that the perception and practice of ambient content, the enactment of derivative routines, the management of what is viewed as systemic bias, and dominance of negative affect combine to generate an experiential devaluation of the news in everyday life.


1997 ◽  
Vol 272 (2) ◽  
pp. C416-C420 ◽  
Author(s):  
E. N. Chini ◽  
M. A. Thompson ◽  
C. C. Chini ◽  
T. P. Dousa

The molecular mechanism that initiates Ca2+ signaling in sea urchin egg fertilization has not yet been clarified. To determine whether sea urchin sperm may generate and possibly supply cyclic ADP-ribose (cADPR) as a Ca2+-releasing factor in the course of sea urchin egg fertilization, we determined cADPR content and the capacity for cADPR synthesis in sea urchin sperm. cADPR content was determined using the sea urchin egg homogenate Ca2+-release bioassay combined with high-performance liquid chromatography (HPLC). We found that sperm homogenates synthesized cADPR from beta-NAD but did not synthesize cADPR when alpha-NAD was the substrate. The identity of cADPR generated by sperm homogenates was verified by HPLC analysis, use of specific Ca2+-release antagonists, and homologous desensitization of the sea urchin egg homogenate Ca2+-release bioassay. The ambient content of cADPR was approximately 0.3 nmol cADPR/g wet wt sea urchin sperm. Our results show that sperm can synthesize cADPR and that they contain cADPR levels comparable to other tissues.


Sign in / Sign up

Export Citation Format

Share Document