Developmental differences in temporal patterns and potentiation of isolation-induced ultrasonic vocalizations: Influence of temperature variables

2002 ◽  
Vol 40 (2) ◽  
pp. 147-159 ◽  
Author(s):  
Kimberly S. Kraebel ◽  
Susan M. Brasser ◽  
James O. Campbell ◽  
Linda P. Spear ◽  
Norman E. Spear
Keyword(s):  
Temporal Patterns ◽  
Developmental Differences ◽  
Ultrasonic Vocalizations ◽  
Influence Of Temperature

Temporal patterns of gamete production within individuals of Raphanus sativus (Brassicaceae)

1990 ◽  
Vol 68 (3) ◽  
pp. 480-486 ◽  
Author(s):  
Helen J. Young ◽  
Maureen L. Stanton
Keyword(s):  
Raphanus Sativus ◽  
Female Parent ◽  
Temporal Patterns ◽  
Developmental Differences ◽  
Pollen Size ◽  
Male And Female ◽  
Ovule Number ◽  
Pollen Number ◽  
Gamete Production ◽  
Phenotypic Gender

Previous studies on the deployment of energy to male and female gametes in plants have concentrated on differences among individuals or among related species. We documented temporal patterns of sex allocation within individual wild radish plants grown under controlled conditions. Lifetime investments in pollen and ovules were determined for four unrelated individuals of Raphanus sativus L. (Brassicaceae). Each individual produced 600–1100 flowers over the approximately 5-week flowering period. Mature floral buds were collected daily and ovule number, pollen grain number, pollen size, and pollen to ovule ratio (P:O) were determined for each. Variation in these traits was partitioned into variation among plants and among dates (representing flowering sequence). There was significant variation among plants for all characters, but because plants responded differently to date for three of the characters, further analyses were performed on a plant-by-plant basis. All plants showed significant reductions in pollen number and P:O through time, three plants showed a significant reduction in pollen size with time, and two plants showed a significant reduction in ovule number with time. The observed variation in phenotypic gender among these plants was not environmentally mediated because all plants were grown together in a controlled environment and therefore the differences in allocation to gametes were due to genetic or developmental differences. A result of intraspecific variation in gamete production is that the success of each individual as a male and female parent is likely to vary both within the population and within the flowering season. Key words: pollen to ovule ratio, Raphanus, pollen number, temporal changes, phenotypic gender, Brassicaceae, radish.

The effect of temperature on high-resolution TEM image contrast

1995 ◽  
Vol 53 ◽  
pp. 640-641
Author(s):  
T. Geipel ◽  
W. Mader ◽  
P. Pirouz
Keyword(s):  
Form Factor ◽  
Inelastic Scattering ◽  
Accurate Method ◽  
Waller Factor ◽  
Effect Of Temperature ◽  
Specimen Thickness ◽  
Influence Of Temperature ◽  
Debye Waller Factor ◽  
Influence Of Temperature On ◽  
Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

Recent Developments in the Assessment and Diagnosis of Child Psychopathology

1995 ◽  
Vol 11 (3) ◽  
pp. 203-212 ◽  
Author(s):  
Frank C. Verhulst
Keyword(s):  
Problem Behaviors ◽  
Child Psychopathology ◽  
Developmental Differences ◽  
Multiple Informants ◽  
Cultural Research ◽  
Assessment Approach ◽  
Multicultural Knowledge ◽  
Recent Developments ◽  
Basic Characteristics ◽  
Assessment And Diagnosis

In this article, recent developments in the assessment and diagnosis of child psychopathology are discussed with an emphasis on standardized methodologies that provide data that can be scored on empirically derived groupings of problems that tend to co-occur. Assessment methodologies are highlighted that especially take account of the following three basic characteristics of child psychopathology: (1) the quantitative nature of child psychopathology; (2) the role of developmental differences in the occurrence of problem behaviors, and (3) the need for multiple informants. Cross-cultural research is needed to test the applicability of assessment procedures across different settings as well as the generalizability of taxonomic constructs. Assessments of children in different cultures can be compared or pooled to arrive at a multicultural knowledge base which may be much stronger than knowledge based on only one culture. It is essential to avoid assuming that data from any single source reveal the significance of particular problems. Instead, comprehensive assessment of psychopathology requires coordination of multisource data using a multiaxial assessment approach.

Temporal Patterns for Pitch and Loudness

1978 ◽  
Vol 23 (11) ◽  
pp. 856-857
Author(s):  
W. LAWRENCE GULICK
Keyword(s):  
Temporal Patterns

Timing is everything: Developmental differences in the effect of chronic corticosterone exposure on extinction retention.

2019 ◽  
Vol 133 (5) ◽  
pp. 467-477
Author(s):  
Anthea A. Stylianakis ◽  
Rick Richardson ◽  
Kathryn D. Baker
Keyword(s):  
Developmental Differences

Developmental Differences in Controlled Retrieval

2011 ◽  
Author(s):  
Thomas C. Lorsbach ◽  
Jason F. Reimer ◽  
Mary J. Friehe
Keyword(s):  
Developmental Differences

Developmental Differences in the Irrelevant Sound Effect

2011 ◽  
Author(s):  
Emily M. Elliott ◽  
Kenneth Barideaux ◽  
Alicia M. Briganti
Keyword(s):  
Developmental Differences ◽  
Sound Effect ◽  
Irrelevant Sound ◽  
Irrelevant Sound Effect

Developmental differences in feature memory and feature binding

2001 ◽  
Author(s):  
Thomas C. Lorsbach ◽  
Jason F. Reimer
Keyword(s):  
Developmental Differences ◽  
Feature Binding ◽  
Feature Memory
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