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- Allwood, Jens, et al.
(författare)
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On the semantics and pragmatics of linguistic feedback
- 1992
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Ingår i: Journal of Semantics. - : Oxford University Press (OUP). - 0167-5133 .- 1477-4593. ; 9:1, s. 1-26
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Tidskriftsartikel (refereegranskat)abstract
- This paper is an exploration in the semantics and pragmatics of linguistic feedback, i. e. linguistic mechanisms which enable the participants in spoken interaction to exchange information about basic communicative functions, such as contact, perception, understanding, and attitudinal reactions to the communicated content. Special attention is given to the type of reaction conveyed by feedback utterances, the communicative status of the information conveyed (i. e. the level of awareness and intentionality of the communicating sender), and the context sensitivity of feedback expressions. With regard to context sensitivty, which is one of the most characteristic features of feedback expressions, the discussion focuses on the way in which the type of speech act (mood), the factual polarity, and the information status of the preceding utterance influence the interpretation of feedback utterances. The different content dimensions are exemplified by data from recorded dialogues and by data given through linguistic intuition. Finally, two different ways of formalizing the analysis are examined, one using attribute-value matrices and one based on the theory of situation semantics. ©1992 N.I.S. Foundation (1992).
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| 2. |
- Askerlund, Per, et al.
(författare)
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Reconstitution and Characterization of a Calmodulin-Stimulated Ca-Pumping ATPase Purified from Brassica oleracea L
- 1992
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Ingår i: Plant Physiology. - 0032-0889 .- 1532-2548. ; 100:4, s. 1670-1681
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Tidskriftsartikel (refereegranskat)abstract
- Purification and functional reconstitution of a calmodulin-stimulated Ca(2+)-ATPase from cauliflower (Brassica oleracea L.) is described. Activity was purified about 120-fold from a microsomal fraction using calmodulin-affinity chromatography. The purified fraction showed a polypeptide at 115 kD, which formed a phosphorylated intermediate in the presence of Ca(2+), together with a few polypeptides with lower molecular masses that were not phosphorylated. The ATPase was reconstituted into liposomes by 3-([cholamidopropyl]-dimethylammonio-)1-propanesulfonate (CHAPS) dialysis. The proteoliposomes showed ATP-dependent Ca(2+) uptake and ATPase activity, both of which were stimulated about 4-fold by calmodulin. Specific ATPase activity was about 5 mumol min(-1) (mg protein)(-1), and the Ca(2+)/ATP ratio was 0.1 to 0.5 when the ATPase was reconstituted with entrapped oxalate. The purified, reconstituted Ca(2+)-ATPase was inhibited by vanadate and erythrosin B, but not by cyclopiazonic acid and thapsigargin. Activity was supported by ATP (100%) and GTP (50%) and had a pH optimum of about 7.0. The effect of monovalent and divalent cations (including Ca(2+)) on activity is described. Assay of membranes purified by two-phase partitioning indicated that approximately 95% of the activity was associated with intracellular membranes, but only about 5% with plasma membranes. Sucrose gradient centrifugation suggests that the endoplasmic reticulum is the major cellular location of calmodulin-stimulated Ca(2+)-pumping ATPase in Brassica oleracea inflorescences.
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| 5. |
- Blomstrand, Peter, et al.
(författare)
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Exercise echocardiography : a methodological study comparing peak‐exercise and post‐exercise image information
- 1992
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Ingår i: Clinical Physiology. - : John Wiley & Sons. - 0144-5979 .- 1365-2281. ; 12:5, s. 553-565
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Tidskriftsartikel (refereegranskat)abstract
- It is unclear whether echocardiography at peak bicycle exercise adds information to registrations obtained recumbent immediately after the test and what factors influence image quality. Therefore, exercise echocardiography was performed consecutively and prospectively in 66 men, unselected with regard to echocardiography, one month after an episode of unstable coronary artery disease. Of 594 segments (9 × 66), 569 (96%) were adequately visualized recumbent at rest. The corresponding figures recumbent directly after exercise, seated before exercise, and seated at peak exercise were 544 (92%), 474 (80%), and 428 (72%), respectively. In the majority of our patients, acceptable images at peak exercise were obtained for the septal region, while for the anterior, lateral, and inferior segments the success rate varied from 50 to 70%. Recumbent after exercise, the success rate was acceptable for most segments, possibly with the exception of the apical and lateral segments. Fifty‐five patients developed new wall motion abnormalities or worsening of wall motion in connection with exercise. Echocardiography at peak exercise provided more information than afterwards in patients with images of good quality. However, in patients with inferior image quality, the registrations obtained recumbent after the test revealed wall motion abnormalities which were not obtained seated at peak exercise. Patients with worse image quality had significantly higher respiratory rate and weight, and rated a higher degree of dyspnoea at peak exercise than those with good quality. We conclude that in middle aged men with coronary artery disease, image acquisition at peak bicycle exercise and immediately after exercise are of complementary value.
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| 6. |
- Carlsson, Margareta, et al.
(författare)
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Family patterns of the oldest old
- 1992
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Ingår i: Aging Clinical and Experimental Research. - 1594-0667 .- 1720-8319. ; 4, s. 293-300
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Tidskriftsartikel (refereegranskat)
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| 7. |
- Carlsson, Margareta, et al.
(författare)
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The daily life of the oldest old
- 1992
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Ingår i: Journal of Sociology & Social Welfare. - 0191-5096 .- 1949-7652. ; 19, s. 109-124
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Tidskriftsartikel (refereegranskat)
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| 8. |
- Carlsson-Ågren, Margareta, et al.
(författare)
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Daily life of the oldest old
- 1992
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Ingår i: Journal of sociology and social welfare. - 0191-5096 .- 1949-7652. ; 19:2, s. 109-124
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Tidskriftsartikel (refereegranskat)
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