Product Description
This digital document is an article from The Texas Journal of Science, published by Texas Academy of Science on May 1, 2004. The length of the article is 1570 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: A new distribution record and notes on the biology of the brittle star Ophiactis simplex (Echinodermata: Ophiuroidea) in Texas.
Author: Ana Beardsley Christensen
Publication: The Texas Journal of Science (Refereed)
Date: May 1, 2004
Publisher: Texas Academy of Science
Volume: 56Issue: 2Page: 175(5)

Distributed by Thomson Gale ... Read more

Product Description
This scarce antiquarian book is a selection from Kessinger Publishings Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the worlds literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more

Product Description
Western Carolina University, Cullowhee, North Carolina.Reference and atlas of the functional morphology of six species of echinoderms. For bioscientists. Large, high-quality halftone illustrations. 12 contributors, 2 U.S. ... Read more

Product Description
This is a reproduction of a book published before 1923.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process.We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide.We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
This digital document is an article from Journal of Shellfish Research, published by National Shellfisheries Association, Inc. on August 1, 2010. The length of the article is 7392 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

Citation Details
Title: The effect of seasonality on gonad fatty acids of the sea urchins Paracentrotus lividus and Arbacia lixula (Echinodermata: Echinoidea).(Report)
Author: Ines Martinez-Pita
Publication: Journal of Shellfish Research (Magazine/Journal)
Date: August 1, 2010
Publisher: National Shellfisheries Association, Inc.
Volume: 29Issue: 2Page: 517(9)

Article Type: Report

Distributed by Gale, a part of Cengage Learning ... Read more

Product Description
This digital document is a journal article from Comparative Biochemistry and Physiology, Part C, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The role of adrenaline in the nervous control of bioluminescence in three brittlestar species, Amphiura filiformis, Amphipholis squamata, and Ophiopsila aranea, was assessed by testing two different @b-adrenergic antagonists (propranolol and labetalol) over a wide concentration range (10^-^1^0-10^-^3M). We compared the effects of analogues (active vs. inactive) of the same substance (l- and d-enantiomers of propranolol). Propranolol presented both specific and nonspecific effects: (i) nonspecific effects were observed at the higher concentrations tested (10^-^4 and 10^-^3M) in all three species; (ii) specific effects were detected only at the lower concentrations tested (10^-^6-10^-^5M). In A. squamata, the involvement of adrenaline in the nervous control of luminescence is supported by propranolol and labetolol specific inhibition. The neuropharmacological implications of nonspecific effects, the involvement of adrenaline and the interspecific differences in the brittlestar nervous control of bioluminescence are discussed. ... Read more

Product Description
This digital document is a journal article from Science of the Total Environment, The, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The Southern Bight of the North Sea is particularly exposed to anthropogenic contamination, due to heavy urbanisation and industrialisation of its catchment area. The present work focuses on polychlorinated biphenyl (PCB) and metal contamination of the marine environment along and off the Belgian coast. Its objectives were to compare the concentrations of seven PCB congeners and four heavy metals in the sediments (a repository for anthropogenic contaminants) and in the asteroid Asterias rubens (a recognized bioindicator species). Nineteen sampling stations were considered between the mouth of the Scheldt Estuary and the southern limit of the Belgian coast (asteroids were found in 10 out of the 19 stations). PCB and metal concentrations measured in sediments and asteroids were in the range of values reported in previous studies. Stations under direct influence of the Scheldt were the most impacted by the considered contaminants. Metal concentrations varied according to the grain-size fraction considered. In asteroids, PCBs and metals were found to be selectively distributed among body compartments, and pyloric caeca were found to most efficiently discriminate between sampling stations contamination levels. PCB and metal analysis of sediments provided a physicochemical evaluation of the contamination, whereas analysis of asteroids introduced a biological dimension to the approach by taking into account bioavailability of the contaminants. ... Read more

Product Description
Mark Twain once famously said "there was but one solitary thing about the past worth remembering, and that was the fact that it is past and can't be restored."  Well, over recent years, The British Library, working with Microsoft has embarked on an ambitious programme to digitise its collection of 19th century books.

There are now 65,000  titles available  (that's an incredible 25 million pages) of material ranging from works by famous names such as  Dickens, Trollope and Hardy as well as many forgotten literary gems , all of which can now be printed on demand and purchased right here on Amazon.

Further information on The British Library and its digitisation programme can be found on The British Library website. ... Read more

Product Description
Part U. Echinodermata 3. Volume 2. ... Read more

Product Description
This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more