Students as co-learners - reviewing a decade of the Geography Research Assistantship

The uninfected digestive gland of Bithynia tentaculata consists of three main cell types: ‘absorptive’ cells, ‘thin’ cells and ‘secretory’ cells. With infection by sporocysts, rediae, or metacercaria, pressure effects caused a reduction in the lumen of the digestive gland tubules and this probably resulted in a starvation autolysis. Some tubules recovered from infection and in such cases there was a reduction in the height of the epithelium. A migration of the digestive gland nuclei was only evident in redial infections and this may have been due to the toxic effects of rediae. In addition, rediae directly ingested host digestive gland tissue.The digestive gland was reduced to about two-thirds of its normal size in all heavily infected snails. Secretory cells of the gland were more resistant to infection than were the absorptive or thin cells.I am indebted to Dr F. R. Stranack for her supervision and guidance throughout this investigation, and to Dr G. Charles and Dr T. Jenkins for their continued help and advice. This study was carried out during the tenure of a Research Assistantship awarded by the Governors of Portsmouth Polytechnic.

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The Undergraduate Research Assistantship: An Analysis of the Benefits

Teaching of Psychology ◽

10.1207/s15328023top2901_04 ◽

2002 ◽

Vol 29 (1) ◽

pp. 15-19 ◽

Cited By ~ 60

Author(s):

R. Eric Landrum ◽

Lisa R. Nelsen

Keyword(s):

Factor Analysis ◽

National Survey ◽

Undergraduate Education ◽

Undergraduate Research ◽

Technical Skills ◽

Research Assistant ◽

Potential Benefits ◽

Research Assistantship ◽

Undergraduate Psychology ◽

Research Assistants

This study documents and quantifies the benefits of serving as an undergraduate research assistant based on the results of a national survey of undergraduate psychology educators (N = 211). The survey consisted of a list of 40 potential benefits, skills, and abilities. Respondents rated each of the items on (a) whether their research assistants attain the benefit, skill, or ability and (b) the importance of each item to an undergraduate education in psychology. Factor analysis revealed 2 major themes: The first factor contained items relating to technical skills, such as math, statistics, writing, and effective communication, whereas items in the second factor pertained to interpersonal benefits. This study provides important information for evaluating the value of the assistantship experience.

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Conceptual Framework for RoboDoc: A New Social Robot for Research Assistantship

Social Robotics - Lecture Notes in Computer Science ◽

10.1007/978-3-319-47437-3_79 ◽

2016 ◽

pp. 808-818 ◽

Cited By ~ 1

Author(s):

Azadeh Mohebi ◽

Ramin Golshaie ◽

Soheil Ganjefar ◽

Ammar Jalalimanesh ◽

Parnian Afshar ◽

...

Keyword(s):

Conceptual Framework ◽

Social Robot ◽

Research Assistantship

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Research Assistantship in Forest History

Forest and Conservation History ◽

10.2307/3983101 ◽

1958 ◽

Vol 2 (2) ◽

pp. 3-3

Keyword(s):

Forest History ◽

Research Assistantship

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Histochemical observations on carbohydrates, lipids and enzymes in digenean parasites and host tissues of Bithynia tentaculata

Parasitology ◽

10.1017/s0031182000067470 ◽

1971 ◽

Vol 63 (1) ◽

pp. 125-136 ◽

Cited By ~ 18

Author(s):

Trevor A. J. Reader

Keyword(s):

Amino Acids ◽

Digestive Gland ◽

Body Wall ◽

Fat Content ◽

Pressure Effects ◽

Host Cells ◽

Bithynia Tentaculata ◽

Research Assistantship ◽

Host Tissues ◽

Secreted Lipase

Active digenean larvae in Bithynia tentaculata were found to utilize both host carbohydrates and lipids, and these were incorporated into the bodies of developing cercariae. Although rediae obtain most of their nutrients by direct ingestion, a decrease in the glycogen and neutral fat content of intact digestive gland cells of snails infected with rediae suggests that these larvae may also absorb nutrients through their body walls, like sporocysts. In sporocyst infections, host glycogen is believed to be hydrolysed to glucose and other monosaccharides by the host's own enzymes, possibly phosphatases, which have been stimulated to greater activity by the parasites. These simple sugars, due to their small size, can then be absorbed through the sporocyst body wall. Similarly, host fats are probably degraded to fatty acids, possibly by a parasite-secreted lipase, prior to absorption by the parasites. Encysted metacercariae do not appear to feed, but they do have severe pressure effects which disrupt some of the digestive gland tubules. Such tubules show an increase in their neutral fat content and a decrease in phosphatase activity. Aminopeptidase enzymes secreted by active digenean larvae may be responsible for some lysis of host cells, and may also be involved in the breakdown of lymph proteins to amino acids.I am indebted to Dr F. R. Stranack for her supervision and guidance throughout this investigation, and to Dr G. Charles and Dr T. Jenkins for their continued help and advice. This study was carried out during the tenure of a research assistantship awarded by the governors of Portsmouth Polytechnic.

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