| 1. |
- Almqvist, Nils, et al.
(författare)
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Methods for fabricating and characterizing a new generation of biomimetic materials
- 1999
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Ingår i: Materials science & engineering. C, biomimetic materials, sensors and systems. - 0928-4931 .- 1873-0191. ; 7:1, s. 37-43
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Tidskriftsartikel (refereegranskat)abstract
- Bringing together current ideas in the fields of biomineralization and composite laminate materials, we have attempted to fabricate model materials that mimic abalone nacre through the rapid assembly of inorganic tablets, such as talc. Several physical methods were tested to aid the orientation of the talc tablets in fluid suspensions with a low percentage, 10% by dry weight, of organic binding material. The orientation of talc tablets in the synthesized composites was characterized by X-ray diffraction and scanning electron microscopy. The modulus of rupture of the materials was measured in a three-point bending test. We demonstrate that the alignment of tablets increases by the use of physical methods and from chemical surface treatment. Important factors to consider in making materials that mimic abalone nacre are discussed. Important factors to consider in making materials that mimic abalone nacre are discussed.
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| 2. |
- Lundqvist, Andreas, et al.
(författare)
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Frontal affinity chromatographic analysis of membrane protein reconstitution
- 1997
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Ingår i: Materials science & engineering. C, biomimetic materials, sensors and systems. - 0928-4931 .- 1873-0191. ; 4:4, s. 221-226
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Tidskriftsartikel (refereegranskat)abstract
- The human red cell glucose transporter Glut1 was solubilized with octaoxyethylene n-dodecyl ether (low critical micelle concentration (CMC)), purified, mixed with egg phospholipids and cholate, and reconstituted by gel filtration on Superdex 75. Free protepliposomes showed relatively high D-glucose transport activity. Frontal affinity chromatographic analysis with the proteoliposomes sterically immobilized in Superdex 200 gel beads revealed that the number of operative cytochalasin B (CB) binding sites increased during the first days of chromatographic runs to become the same as with 1-O-n-octyl β-d-glucopyranoside (high CMC) as solubilizer and Sephadex G-50 as gel filtration medium. The average number of sites per Glut1 monomer was 0.32 ± 0.02. The average Kd for CB was 66 ± 3 nM at 150 mM NaCl, similarly as for Glut1 in membrane vesicles, whereas the affinity of d-glucose for reconstituted Glut1 was lower (Kd = 44 ± 3 mM) than for membranous Glut1 (Kd = 15 ± 5 mM). Two theoretical treatments of affinity chromatographic data gave the same values in agreement with competitive and monovalent interactions.
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| 3. |
- Onipko, A, et al.
(författare)
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Green function of conjugated oligomers : the exact analytical solution with an application to the molecular conductance
- 1999
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Ingår i: Materials science & engineering. C, biomimetic materials, sensors and systems. - 0928-4931 .- 1873-0191. ; 8-9, s. 273-281
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Tidskriftsartikel (refereegranskat)abstract
- The exact analytical expression of the Green function of oligomers M-M-...-M and M-1-M-2-M-1-...-M-2-M-1, where M M-1, and M-2 are monomers of arbitrary pi electronic structure described by the tight-binding Hamiltonian, is derived for the first time. This result makes possible to address relevant spectral and electron transport properties of large linear molecules on the basis of realistic exactly solvable models. The power of the approach is exemplified by obtaining a number of explicit relations between the transport related quantities, in particular, through molecule tunneling decay constant, and the molecular electronic structure for a wide family of potential molecular wires. (C) 1999 Elsevier Science S.A. All rights reserved.
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| 4. |
- Dåderman, Anna Maria, 1953-
(författare)
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Differences between severely conduct-disordered juvenile males and normal juvenile males: the study of personality traits
- 1999
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Ingår i: Personality and Individual Differences. - Amsterdam : Elsevier. - 0191-8869 .- 1873-3549. ; 26:5, s. 827-845
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Tidskriftsartikel (refereegranskat)abstract
- Personality traits among a group of 47 severely conduct-disordered (C-D) juvenile males from four Swedish national correctional institutions for serious offences were studied. The Karolinska Scales of Personality (KSP), the Eysenck Personality Questionnaire (EPQ-I), including an impulsivity scale from the Impulsiveness-Venturesomeness-Empathy (IVE) inventory, and the Zuckerman Sensation-Seeking Scales (SSS) form V, were administered to the C-D juveniles. The scores from the KSP for this group were compared to scores from a presentative group of 82 normal juvenile male subjects from the Swedish longitudinal research program Individual Development and Adaptation (IDA). Pearson product-moment correlations were calculated between the KSP scales and scales from the EPQ-I, and between the SSS and scales from the EPQ-I and KSP inventories. The C-D juveniles displayed notably higher scores than the mean normal scores on psychopathy-related personality scales. The present results are consistent with earlier findings concerning personality dimensions in adult criminal psychopaths: high scores on impulsivity and sensation seeking, and low scores on conformity reflected in low socialization and high psychoticism.
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| 5. |
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| 6. |
- Koyi, Hemin
(författare)
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Mode of internal deformation in sand wedges
- 1995
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Ingår i: Journal of Structural Geology. - 0191-8141 .- 1873-1201. ; 17:2, s. 293-300
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Sequential sections of a sand box model are used to quantify displacement along imbricate surfaces and their rotation and volume loss history within an accreting sand wedge. Model results show that both displacement along the imbricate surfaces and compac
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| 7. |
- Saboonchi, Fredrik, et al.
(författare)
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Perfectionism, self-consciousness and anxiety
- 1997
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Ingår i: Personality and Individual Differences. - 0191-8869 .- 1873-3549. ; 22:6, s. 921-928
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Tidskriftsartikel (refereegranskat)abstract
- The relation between perfectionism, anxiety, and self-consciousness was studied in a normal sample. The perfectionism dimensions of Concern over Mistakes, Doubts about Action, and Socially Prescribed Perfectionism showed a pattern of correlations not only with measures of social anxiety, but also with measures of agoraphobic fears, and fears of bodily injury, death and illness. Public self-consciousness also correlated with various measures of anxiety, but these correlations disappeared when the relevant dimensions of perfectionism were controlled for. It is concluded that perfectionism is a more relevant construct in the study of anxiety than is public self-consciousness. The results are discussed in terms of possible causal relationships between perfectionism and anxiety.
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