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Reference analysis of the (2003)

Lowe, M. Sara

Bradford : Emerald

Collection building 22 (2003), S. 13-20

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ISSN: 0160-4953

Source: Emerald Fulltext Archive Database 1994-2005

Topics: Information Science and Librarianship

Notes: This paper attempts to evaluate the literature of the field of history through a multi-decade reference analysis of the American Historical Review. Reference analysis, a subsection of the larger field of bibliometrics, is a method of determining the characteristics of a field or subject by careful examination of the literature of that area. This study will analyze references from one issue of the AHR from the years 1950, 1970, 1990, and 2002 in five areas: total citations, age of the citations, language of the citations, format of the citations (e.g. monograph, journal, etc.), and the number of authors per citation. Hopefully, this analysis will help to define the patterns (if any) that have characterized the field of history through time.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1108/01604950310457168

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Ternary Gd(III)L-HSA adducts: evidence for the replacement of inner-sphere water molecules by coordinating groups of the protein. Implications for the design of contrast agents for MRI (2000)

Aime, S. ; Gianolio, E. ; Terreno, E. ; [et al.]

Springer

JBIC 5 (2000), S. 488-497

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ISSN: 1432-1327

Keywords: Key words Gadolinium(III) complex ; MRI contrast agent ; Luminescence ; Human serum albumin

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Chemistry and Pharmacology

Notes: Abstract Two novel gadolinium(III) chelates based on the structure of the heptadentate macrocyclic 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) ligand have been synthesized and their relaxometric and luminescent properties thoroughly investigated. They contain two water molecules in the inner coordination sphere in fast exchange with the bulk solvent and bear either a p-bromobenzyl or a p-phosphonatomethylbenzanilido substituent for promoting further interaction with macromolecular substrates. Upon interaction with human serum albumin the expected relaxation enhancement is not observed owing to displacement of the two inner-sphere water molecules of the complexes by a donor atom (likely from a carboxylate group) on the protein and possibly the phosphate anion of the buffered solution, respectively. We modeled the observed behavior by measuring the decrease of the relaxation rate of the water protons upon addition of malonate anion to aqueous solutions of the complexes. Conversely, no change in the hydratation state of the Gd(III) center for both complexes has been observed when the substrate for the formation of the macromolecular adduct is represented by poly-β-cyclodextrin.