title: Bibliomania: what can we learn from the research literature?

authors: Cunningham, Sally Jo

subjects: computer science

abstract: The field of bibliometrics provides a set of quantitative methods for understanding how scientific information is created and disseminated by examining the structure, rather than the content, of subject documents. Bibliographic information can be analyzed to give insights into the development of research fronts, methods of scientific communication, and characteristics of the scientific literature. This paper presents three case studies illustrating simple bibliometric techniques, as applied to management/computer science/information systems. These fields have been largely ignored by bibliometricians; an unfortunate omission, given the information on the nature and structure of these fields that bibliometric studies could provide.

text: Bibliomania: what can we learn from the research literature? The field of bibliometrics provides a set of quantitative methods for understanding how scientific information is created and disseminated by examining the structure, rather than the content, of subject documents. Bibliographic information can be analyzed to give insights into the development of research fronts, methods of scientific communication, and characteristics of the scientific literature. This paper presents three case studies illustrating simple bibliometric techniques, as applied to management/computer science/information systems. These fields have been largely ignored by bibliometricians; an unfortunate omission, given the information on the nature and structure of these fields that bibliometric studies could provide.

year: 1995-04

title: Fragmentation pathways of [Re₂(μ-OR)₃(CO)₆]– (R = H, Me) and ligand exchange reactions with oxygen donor ligands, investigated by electrospray mass spectrometry

authors: Jiang, Chenghua

subjects: chemistry

abstract: The rhenium hydroxy and methoxy carbonyl complexes [Re₂(μOR)₃(CO)₆]⁻ (R = H or Me) have been studied by negative-ion electrospray mass spectrometry (ESMS). The complexes undergo facile exchange reactions with protic compounds, including alcohols and phenols. With dimethyl malonate, ester hydrolysis occurs giving carboxylate-containing complexes, and with H₂O₂ or ButOOH, oxidation to ReO₄⁻occurs. The feasibility and extent of these reactions can conveniently, rapidly, and unambiguously be determined by electrospray mass spectrometry, and is dependent on the acidity and steric bulk of the protic compound. The results also suggest that the complexes can be used as versatile starting materials for the synthesis of a wide range of analogous [Re₂(μ-OR)₃(CO)₆]⁻ complexes by simple reaction with an excess of the appropriate alcohol. By varying the applied cone voltage the fragmentation pathways have been investigated; the hydroxy complex undergoes dehydration followed by CO loss, whereas for the methoxy complex  -hydride elimination (and CO loss) is observed, with confirmation provided by deuterium labelling studies. Under ESMS conditions, the neutral complexes [Re₂(μ-OR)₂(μ-dppf )(CO)₆] [R = H or Me; dppf = 1,1 -bis(diphenylphosphino)ferrocene] undergo substantial solvolysis and hydrolysis to give mainly mononuclear species; simple parent ions (e.g. [M + H]⁺) are not formed in appreciable abundance, probably due to the lack of an efficient ionisation pathway.

text: Fragmentation pathways of [Re₂(μ-OR)₃(CO)₆]– (R = H, Me) and ligand exchange reactions with oxygen donor ligands, investigated by electrospray mass spectrometry The rhenium hydroxy and methoxy carbonyl complexes [Re₂(μOR)₃(CO)₆]⁻ (R = H or Me) have been studied by negative-ion electrospray mass spectrometry (ESMS). The complexes undergo facile exchange reactions with protic compounds, including alcohols and phenols. With dimethyl malonate, ester hydrolysis occurs giving carboxylate-containing complexes, and with H₂O₂ or ButOOH, oxidation to ReO₄⁻occurs. The feasibility and extent of these reactions can conveniently, rapidly, and unambiguously be determined by electrospray mass spectrometry, and is dependent on the acidity and steric bulk of the protic compound. The results also suggest that the complexes can be used as versatile starting materials for the synthesis of a wide range of analogous [Re₂(μ-OR)₃(CO)₆]⁻ complexes by simple reaction with an excess of the appropriate alcohol. By varying the applied cone voltage the fragmentation pathways have been investigated; the hydroxy complex undergoes dehydration followed by CO loss, whereas for the methoxy complex  -hydride elimination (and CO loss) is observed, with confirmation provided by deuterium labelling studies. Under ESMS conditions, the neutral complexes [Re₂(μ-OR)₂(μ-dppf )(CO)₆] [R = H or Me; dppf = 1,1 -bis(diphenylphosphino)ferrocene] undergo substantial solvolysis and hydrolysis to give mainly mononuclear species; simple parent ions (e.g. [M + H]⁺) are not formed in appreciable abundance, probably due to the lack of an efficient ionisation pathway.

year: 2000

title: Ohaaki: A power station on Maori land

authors: Stokes, Evelyn

subjects: Ohaaki Geothermal Power Station

abstract: This paper is about a geothermal power station called Ohaaki, constructed over the period 1982-1989 on Maori land close by Te Ohaaki Marae and the ancestral papakainga of Ngati Tahu. This is a personal account of the impact of this project on Ngati Tahu rather than a history of the construction of the power station.

text: Ohaaki: A power station on Maori land This paper is about a geothermal power station called Ohaaki, constructed over the period 1982-1989 on Maori land close by Te Ohaaki Marae and the ancestral papakainga of Ngati Tahu. This is a personal account of the impact of this project on Ngati Tahu rather than a history of the construction of the power station.

year: 2003