Circadian Eclosion Rhythm in Chironomus Thummi: Ecological Adjustment to Different Temperature Levels and the Role of Temperature Cycles

Chironomidae ◽  
1980 ◽  
pp. 73-79 ◽  
Author(s):  
A. Kureck
Keyword(s):  
Temperature Cycles ◽  
Eclosion Rhythm ◽  
Temperature Levels ◽  
Chironomus Thummi

The role of selected environmental factors and sex ratio upon egg production in three-spine sticklebacks, Gasterosteus aculeatus

1989 ◽  
Vol 67 (8) ◽  
pp. 2013-2020 ◽  
Author(s):  
Fabien Bolduc ◽  
Gerard J. FitzGerald
Keyword(s):  
Sex Ratio ◽  
Egg Production ◽  
Gasterosteus Aculeatus ◽  
Female Reproduction ◽  
Physicochemical Factors ◽  
Significant Difference ◽  
Breeding Grounds ◽  
Temperature Levels ◽  
Seasonal Fecundity

We compared the fecundity of female sticklebacks (Gasterosteus aculeatus) breeding in salt marsh tide pools with that of fish breeding in the laboratory. Although total egg production was higher in the laboratory, there was no significant difference in clutch sizes between the two groups. In the field, physicochemical factors (water temperature, levels of dissolved oxygen, pH, and salinity) explained a statistically significant but small amount of the variation in the various measures of reproduction (daily egg production, total egg production, clutch size, interspawning interval) used. The results of a laboratory experiment concerning the effect of sex ratio upon female reproduction showed that this variable had little effect. The time spent on the breeding grounds appears to be the principal factor determining the seasonal fecundity of this species.

The role of heat pumps for the wise use of energy

1987 ◽  
Vol 92 (1-2) ◽  
pp. 193-201
Author(s):  
C. L. Lopez-Cacicedo
Keyword(s):  
Energy Use ◽  
Process Integration ◽  
Waste Heat ◽  
Industrial Applications ◽  
Heat Pumps ◽  
Wise Use ◽  
Temperature Levels

SynopsisHeat pumps allow the reuse of what might otherwise be waste heat by upgrading such energy to useful temperature levels. Industrial applications to evaporation, distillation and drying are briefly described, together with heat pumps' place within process integration, using examples from the Scottish distilling industries. It is shown that heat pumps are another tool available for energy use optimisation.

scholarly journals Role of Racemization Kinetics in the Deracemization Process via Temperature Cycles

2019 ◽  
Vol 19 (6) ◽  
pp. 3551-3558 ◽  
Author(s):  
Francesca Breveglieri ◽  
Marco Mazzotti
Keyword(s):  
Temperature Cycles

scholarly journals The Role of Terrain Relief, Buildings, and Green Spaces in the Diversification of Lviv’s Local Climate

2010 ◽  
Vol 14 (1) ◽  
pp. 111-119
Author(s):  
Bohdan Mucha ◽  
Jolanta Wawer
Keyword(s):  
Land Use ◽  
Urban Heat Island ◽  
Thermal Characteristics ◽  
Green Spaces ◽  
Heat Island ◽  
Local Climate ◽  
Air Temperatures ◽  
Urban Heat ◽  
Temperature Levels

Abstract This paper outlines the results of a study of Lviv’s specific thermal characteristics. The study relied on a series of measurements taken over a 15-month period (from February 2007, through April 2008) at 6 automatic meteorological stations, representing a variety of physiogeographic conditions and land use. The study reveals substantial variations of temperature levels (annual [1-3°C], seasonal [2-4°C], and daily [2-12°C] averages), indicating the presence of an urban heat island. The result of the study is a map of the distribution of average annual air temperatures on the territory of Lviv.

The Changing Mechanical Properties of Aging Oil Paints

2004 ◽  
Vol 852 ◽  
Author(s):  
Marion F. Mecklenburg ◽  
Charles S. Tumosa ◽  
David Erhardt
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Long Term Care ◽  
Term Care ◽  
Temperature Levels ◽  
Oil Paints ◽  
Hydrolysis Of ◽  
Over Time

ABSTRACTThe stiffening and embrittlement of oil paints over time has been a real concern for those responsible for the long term care and preservation of paintings. This paper examines the effects of time, pigments, relative humidity (RH), temperature and solvents on the mechanical properties of traditional oil paints. In this way it is possible to determine the role of each factor in causing the paints to become brittle. Even after 14 years the oil paints show little evidence that the long term “maturing” processes have begun to slow down. It is shown that there seems to be little correlation between the time paint requires to “dry-to-the-touch” and the longer term mechanical properties. Both low and high temperature levels can increase the stiffness of the paints though the mechanisms are quite different. Considerable hydrolysis of the paints occurs early in their history and the ones that hydrolyze most quickly are the ones that remain the most flexible.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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