To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure firstname.lastname@example.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
In 1990 a stone covered pit containing a Trevisker Ware vessel was found eroding from the cliffs at Harlyn Bay and excavated. The vessel contained cremated bone from several individuals with some animal bone, quartz pebbles, and a small bronze pendant. A radiocarbon date on the cremated bone fell in the range 2120–1880 cal bc and is a valuable addition to the small number of securely-dated Early Bronze Age burials in Cornwall with metalwork associations. This early date also makes a major contribution to the debate on the sequence of Trevisker Ware as the vessel, of gabbroic clay, has a band of incised chevron decoration. Lipid residue analysis showed traces of ruminant dairy fat. This paper examines the significance of unmounded burial sites in Cornwall and also assesses the importance of Early Bronze Age burials around Harlyn Bay which have produced an unusually wide range of artefacts.
Two recent meta-analyses claim that abortion leads to a deterioration in mental health. Previous reviews concluded that the mental health outcomes following an unwanted pregnancy are much the same whether the woman gives birth or terminates the pregnancy, although there is an increased mental health risk with an unwanted pregnancy. Meta-analysis is particularly susceptible to bias in this area. The physical health outcomes for women with an unwanted pregnancy have improved greatly by making abortion legal. To further improve the mental health outcomes associated with an unwanted pregnancy we should focus practice and research on the individual needs of women with an unwanted pregnancy, rather than how the pregnancy is resolved.
The production of extracellular polysaccharide (EPS) molecules is a common feature of many bacteria (Whitfield and Valvano, 1993; Roberts, 1996). These molecules may be linked to the cell surface and organized into a discrete structure termed the capsule or, alternatively, may comprise an amorphous slime layer that is easily sloughed off from the cell surface. In essence, EPS provides a hydrated negatively charged gel that surrounds the bacterium and it is the physicochemical properties of this gel that account for the biological properties of bacterial capsules. A striking feature of bacterial capsular polysaccharides is their diversity, both in terms of component sugars and the glycosidic bond between repeating sugar residues. Even within a single bacterial species, there can be enormous structural diversity. For instance, in the case of Streptococcus pneumoniae there are in excess of 90 capsular serotypes. This diversity has important implications for the design of vaccine formulations that are based on capsular polysaccharides. Paradoxically, amongst this array of structural diversity, there are capsular polysaccharide molecules that are conserved across different bacterial species, such as the Escherichia coli K1 and Neisseria meningitidis serogroup B capsular polysaccharide (Jennings, 1990). Both the diversity of capsular polysaccharides and the conservation of certain polysaccharide structures across species barriers raise questions about the evolution of capsule gene clusters and the selective pressures that drive structural diversity.
For nearly 70 years, from the pioneering experiments of F. Griffith on the transformation of avirulent unencapsulated pneumococci to encapsulation and virulence (Griffith, 1928), it has been known that the expression of a capsule is an essential virulence factor.
During the middle years of the nineteenth century a significant number of American Negro reformers visited Britain. Their visits have not passed unnoticed. As J. H. Franklin has remarked, “More than a score of black abolitionists went to England, Scotland, France and Germany… Almost everywhere they were received with enthusiasm and were instrumental in linking up the humanitarian movement with various reform movements on both sides of the Atlantic.” Benjamin Quarles, furthermore, has commented on some of their work in Britain.
Email your librarian or administrator to recommend adding this to your organisation's collection.