Bat roost boxes at Organ Pipes National Park, Victoria: seasonal and annual usage patterns

Although the general ultrastructure of Cyanidium caldarium, an acidophilic, thermophilic alga of questionable taxonomic rank, has been extensively studied (see review of literature in reference 1), some peculiar ultrastructural features of the chloroplast of this alga have not been noted by other investigators.Cells were collected and prepared for thin sections at the Yellowstone National Park and were also grown in laboratory cultures (45-52°C; pH 2-5). Fixation (glutaraldehyde-osmium), dehydration (ethanol), and embedding (Epon 812) were accomplished by standard methods. Replicas of frozenfracture d- etched cells were obtained in a Balzers apparatus. In addition, cells were examined after disruption in a French Press.

Download Full-text

Vocal Communications of a Developmentally Delayed Child

Language Speech and Hearing Services in Schools ◽

10.1044/0161-1461.1802.112 ◽

1987 ◽

Vol 18 (2) ◽

pp. 112-130

Author(s):

Mary Ann Romski ◽

Sharon Ellis Joyner ◽

Rose A. Sevcik

Keyword(s):

Language Learning ◽

Developmental Delays ◽

Developmentally Delayed ◽

Language Impaired ◽

Diary Data ◽

Word Acquisition ◽

Diary Studies ◽

Usage Patterns ◽

Vocal Communications ◽

Impaired Children

Studies of first-word acquisition in typical language-learning children frequently take the form of diary studies. Comparable diary data from language-impaired children with developmental delays, however, are not currently available. This report describes the spontaneous vocalizations of a child with a developmental delay for 14 months, from the time he was age 6:5 to age 7:7. From a corpus of 285 utterances, 47 phonetic forms were identified and categorized. Analysis focused on semantic, communicative, and phonological usage patterns.

Download Full-text

Home range size, utilization and spatial organization of Pine Martens in Bial'owieza National Park, Poland

Mammal Review ◽

10.1046/j.1365-2907.2000.0075l.x ◽

2000 ◽

Vol 30 (3-4) ◽

pp. 232-232

Author(s):

A. Zalewski ◽

W. Jedrzejewski

Keyword(s):

Home Range ◽

National Park ◽

Spatial Organization ◽

Home Range Size ◽

Range Size ◽

Pine Martens

Download Full-text

Predictors of Problematic Video Game Usage in Childhood and Adolescence

SUCHT - Zeitschrift für Wissenschaft und Praxis / Journal of Addiction Research and Practice ◽

10.1024/0939-5911.a000247 ◽

2013 ◽

Vol 59 (3) ◽

pp. 153-164 ◽

Cited By ~ 19

Author(s):

Thomas Mößle ◽

Florian Rehbein

Keyword(s):

Social Environment ◽

School Children ◽

Video Game ◽

Video Gaming ◽

Control Group ◽

Childhood And Adolescence ◽

Longitudinal Control ◽

Peer Problems ◽

Media Usage ◽

Usage Patterns

Aim: The aim of this article is to work out the differential significance of risk factors of media usage, personality and social environment in order to explain problematic video game usage in childhood and adolescence. Method: Data are drawn from the Berlin Longitudinal Study Media, a four-year longitudinal control group study with 1 207 school children. Data from 739 school children who participated at 5th and 6th grade were available for analysis. Result: To explain the development of problematic video game usage, all three areas, i. e. specific media usage patterns, certain aspects of personality and certain factors pertaining to social environment, must be taken into consideration. Video game genre, video gaming in reaction to failure in the real world (media usage), the children’s/adolescents’ academic self-concept (personality), peer problems and parental care (social environment) are of particular significance. Conclusion: The results of the study emphasize that in future – and above all also longitudinal – studies different factors regarding social environment must also be taken into account with the recorded variables of media usage and personality in order to be able to explain the construct of problematic video game usage. Furthermore, this will open up possibilities for prevention.

Download Full-text