| 1. |
- Dodabalapur, A., et al.
(författare)
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Applied physics - Organic solid-state lasers : Past and future
- 1997
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Ingår i: Science. - : American Association for the Advancement of Science. - 0036-8075 .- 1095-9203. ; 277:5333, s. 1787-1788
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Researchers around the world are seeking organic materials that can be made into practical and efficient lasers. In their Perspective, Dodabalapur et al. review the past history and future prospects of this important class of laser materials.
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| 2. |
- Granström, Magnus, et al.
(författare)
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Micrometer- and Nanometer-Sized Polymeric Light-Emitting Diodes
- 1995
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Ingår i: Science. - : American Association for the Advancement of Science. - 0036-8075 .- 1095-9203. ; 267:5203, s. 1479-1481
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Tidskriftsartikel (refereegranskat)abstract
- A method for the fabrication of micrometer- and submicrometer-sized polymeric light-emitting diodes is presented. Such diodes have a variety of applications. Light sources of dimensions around 100 nanometers are required for subwavelength, near-field optical microscopy. Another possible application is patterning on the micrometer and nanometer scale. The diodes have been made in the form of a sandwich structure, with the conductive polymer poly(3,4-ethylene-dioxythiophene) polymerized in the pores of commercially available microfiltration membranes defining the hole-injecting contacts, poly[3-(4-octylphenyl)-2,2-bithiophene] as the light-omitting layer, and a thin film of calcium-aluminum as the electron injector.
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| 3. |
- Pettersson, Jonas, et al.
(författare)
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Modulation of Virulence Factor Expression by Pathogen Target Cell Contact
- 1996
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Ingår i: Science. - : American Association for the Advancement of Science. - 0036-8075 .- 1095-9203. ; 273:5279, s. 1231-1233
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Tidskriftsartikel (refereegranskat)abstract
- Upon contact with the eukaryotic cell, Yersinia pseudotuberculosis increased the rate of transcription of virulence genes (yop), as determined by in situ monitoring of light emission from individual bacteria expressing luciferase under the control of the yopE promoter. The microbe-host interaction triggered export of LcrQ, a negative regulator of Yop expression, via the Yop-type III secretion system. The intracellular concentration of LcrQ was thereby lowered, resulting in increased expression of Yops. These results suggest a key role for the type III secretion system of pathogenic bacteria to coordinate secretion with expression of virulence factors after physical contact with the target cell.
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| 4. |
- Widmalm, Sven, 1956-
(författare)
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On Exactitude
- 1995
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Ingår i: Science. - 0036-8075 .- 1095-9203. ; 268:5212
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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