1,722,127 research outputs found
Beehive Designs for Observing Variety Competition
Full text link1 online resource (PDF, 11 pages)Martin, Frank B.. (1972). Beehive Designs for Observing Variety Competition. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/199177
Alien Registration- Martin, Frank (Lewiston, Androscoggin County)
Full text linkhttps://digitalmaine.com/alien_docs/28973/thumbnail.jp
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Some technetium complexes for labelling red blood cells
No full textA new approach to produce technetium labelled red blood cells, used routinely in diagnostic nuclear medicine, is reported. The engine Carbonic Anhydrase (CA), present in erythrocytes, is strongly inhibited by primary aromatic sulphonamides, which bind at the enzyme active site. Three types of ligand able to coordinate to technetium and suitable for modification to include a primary aromatic sulphonamide group were studied: the bis(thiosemicarbazones), p-sulphonamylphenylglyoxalbis-4-(alkyl-thiosemicarbazone) (alkyl = Me(SMT), Et(SET)); the Schiff bases N- salicylaldimine-N'- (2-pyridinecarboxaldimine) -propan-l,3-diamine and N-salicylaldimine-dipropylenetriamine; and the propylene amine oximes (PAO) 3,3'- (2-methyl,2-(p-sulphonamylbenzoyl) methylamino)-l,3-propanediyldiimino-bis(3-methyl-2-butanone) dioxime (PN130) and l,3-propanediyldiimino-3- (3-methyl-2-butanone) oxime-4'- ((1-N-amido-p-benzenesulphonamide) -4-methyl-pentan-3-one)oxime (PN135).The experimental conditions needed to label the ligands were determined. Both the thiosemicarbazone and PAO derivatives were labelled, but under no conditions attempted were the Schiff bases complexed by Technetium.The two major isozymes of Human Carbonic Anhydrase, HCA I and HCA II, were isolated from blood. The strength of binding of the free ligands SET, PN130 and PN135 with each of the isozymes was measured and expressed as the Dissociation Constant Kj.The rate of uptake of the technetium complexes into washed RBCs and whole blood was measured and found to be much slower in whole blood. The interaction of the technetium complexes with serum proteins was studied using serum dilution techniques.The biodistribution of both TcPN130 and TcPN135 in rats was determined and scintigraphic images for the TcPN130 complex were recorded. These complexes were retained within the cell but the rate of uptake was slow enough to allow excretion of the unbound complex via the kidneys and liver.Attempts to synthesise the Tc-99 analogues on the milligram scale to allow chemical characterisation of these complexes were unsuccessful.</p
A Model For Quadrat Sampling with "Visibility Bias"
Full text link1 online resource (PDF, 12 pages)Cook, R. Dennis; Martin, Frank B.. (1972). A Model For Quadrat Sampling with "Visibility Bias". Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/199182
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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