Using Video Surveys to Compare Classrooms and Teaching Across Cultures: Examples and Lessons From the TIMSS Video Studies

Growing cells on surfaces bearing nanotopography signals makes many changes in cell gene expression and downstream changes in phenotype but the mechanisms for this have, so far, been obscure. We consider the question of whether the topography directly nanoimprints onto the cell as a component of the signal transduction system. Evidence we present from SEM, TEM and fluorescence detection of the arrangements of cytoskeletal components is consistent with the possibility that cells are nanoimprinted by the substrate. The nanoprinting does not interfere with integrin-mediated adhesion processes and may perhaps work through them. Time-lapse video studies of cells moving from areas bearing nanotopography to flat areas and vice versa suggests that the nanoimprinting takes 1–6 h to appear on the cell and a similar time to disappear when the cell moves from a flat surface to a nanotopographic one and back. This nanoprinting of cells would appear to be a novel type of cell signalling.

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Evaluation of Structure from Motion Software to Create 3D Models of Late Nineteenth Century Great Lakes Shipwrecks Using Archived Diver-Acquired Video Surveys

Journal of Maritime Archaeology ◽

10.1007/s11457-014-9132-x ◽

2014 ◽

Vol 9 (2) ◽

pp. 173-189 ◽

Cited By ~ 10

Author(s):

J. Mertes ◽

T. Thomsen ◽

J. Gulley

Keyword(s):

Nineteenth Century ◽

Great Lakes ◽

Structure From Motion ◽

3D Models ◽

Late Nineteenth Century ◽

Late Nineteenth ◽

Video Surveys

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The sea pens Virgularia mirabilis, Pennatula phosphorea and Funiculina quadrangularis: distribution and conservation issues in Scottish waters

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315407056238 ◽

2007 ◽

Vol 87 (5) ◽

pp. 1095-1103 ◽

Cited By ~ 16

Author(s):

Clare F. Greathead ◽

David W. Donnan ◽

James M. Mair ◽

Graham R. Saunders

Keyword(s):

Stock Assessment ◽

Action Plan ◽

Ecosystem Approach ◽

Geographical Information ◽

Video Footage ◽

Commercial Species ◽

The Uk ◽

Video Surveys ◽

Marine Laboratory ◽

Future Management

The distributions of the pennatulid anthozoans (sea pens) Virgularia mirabilis, Pennatula phosphorea and Funiculina quadrangularis in Scottish waters have previously only been extensively documented in sea lochs, by the Marine Nature Conservation Review (MNCR) surveys. Funiculina quadrangularis in particular was thought to be restricted to the deep basins of sea lochs and is classified as a nationally uncommon species. Sea pens are characterizing species in seven biotopes found in Scottish waters and are protected under the ‘Mud in Deep Water Habitat Action Plan’ of the UK Biodiversity Action Plan (UKBAP) and are also recorded in several Special Areas of Conservation. The present study has extended the existing information available on sea pens in Scottish waters. The distribution and abundance of the three sea pen species were mapped using GIS (Geographical Information System) by utilizing data from Nephrops norvegicus stock assessment video surveys carried out by Fisheries Research Services (FRS) Marine Laboratory. Distribution was shown to be aggregated for all species. Funiculina quadrangularis was present in areas outside the sea lochs, such as the South Minch and the outer mouths of most sea lochs. This study demonstrates that analysis of video footage derived from Nephrops stock assessment surveys can significantly extend our knowledge of sea pen distribution and population density. Future management of Nephrops stocks can be expected to consider impacts of fishing on non-commercial species such as sea pens as a part of the ‘ecosystem approach’ to management.

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Reproductive behaviour in the neotropical foam-nesting frog Pleurodema diplolistris (Leptodactylidae)

Amphibia-Reptilia ◽

10.1163/156853892x00472 ◽

1992 ◽

Vol 13 (3) ◽

pp. 263-274 ◽

Cited By ~ 15

Author(s):

Walter Hödl

Keyword(s):

Water Surface ◽

Reproductive Behaviour ◽

Nest Construction ◽

Field Observations ◽

Call Production ◽

Video Studies ◽

Pulmonary Respiration ◽

Foam Nest

AbstractField observations and laboratory video studies were conducted on call production and foam-nest construction of the leptodactylid frog, Pleurodema diplolistris, in João Pessoa, Paraiba (Brazil). Males call during the night while floating on the water surface. Sound is generated by the inspiratory airstream during pulmonary respiration. Calls have a mean duration of 11.4 s and consist of a series oflow frequency notes given at a mean rate of 536 min-1. Pairs mate in axillary amplexus while floating on the water surface. Between 528 and 748 eggs are deposited in a foam nest. Nesting bouts can be divided into three consecutive phases: (1) female lordosis and egg extrusion and male basket formation; (2) foam beating, and (3) foam smoothing by the male. Bouts last up to 2.9 s and occur at a mean rate of 6.0 min-1. Fifty-one to 101 activity phases are needed to complete nest construction, which lasts between 6:48 and 17:04 min. Interconnected, communal nests outnumber single foam masses. Larvae hatch 22 to 26 h after oviposition at the external gill stage.

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