| 1. |
- Stenström, Thure, 1927-
(author)
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Hälsningsanförande om Christopher Polhem av Preses Hr Thure Stenström vid Kungl. Vetenskaps-Societetens högtidsdag den 6 november 1992
- 1993
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In: Kungl. Vetenskaps-Societetens i Uppsala Årsbok 1993. - Uppsala : Kungl. Vetenskaps-Societeten i Uppsala. - 0348-7849. ; , s. 21-27
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Journal article (pop. science, debate, etc.)abstract
- Högtidsföreläsning av preses, hr Stenström, vid Kungl Vetenskaps-Societetens i Uppsala årshögtid den 6 november 1992 i Uppsala över en av Societetens grundare, gotlänningen och mekanikern kommerserådet Christopher Polhem. Föreläsningen skildrar Polhems lärda bana och uppfinningar, hans mellanhavanden med kung Karl XII och hans korrespondens med Collegium curiosorum i Uppsala i samband med denna akademis grundande åren 1710-1711.
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| 2. |
- Wistedt, Inger, 1943-
(author)
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Matematiska samtal
- 1993
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In: Nämnaren. - Göteborg. - 0348-2723. ; 20:3, s. 21-23
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Journal article (pop. science, debate, etc.)abstract
- I den pedagogiska debatten framhålls ofta kommunikationens betydekse för kunskapsbildningen. Genom matematisks samtal får barnen en möjlighet att uttryck och reflektera över sina tankar och de får också chans att pröva och ompröva dem i samspel med andra. I artikeln diskuteras kommunikationen som både ett överskattat och ett underskattat verktyg i lärprocessen, utifrån exempel hjämtade från projektet "Att använda barn informella kunskaper i matematikundervisningen".
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| 3. |
- Albrektson, Eva
(author)
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Gör Djurdården till naturreservat
- 1991
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In: Kulturmiljövård. - Stockholm : Riksantikvarieämbetet. - 1100-4800. ; :1, s. 64-64
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Journal article (pop. science, debate, etc.)
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| 4. |
- Anderberg, Peter, et al.
(author)
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USA överlägset Sverige
- 1997
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In: Dagens nyheter (DN debatt).
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Journal article (pop. science, debate, etc.)
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| 5. |
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| 6. |
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| 7. |
- Arvidsson, G., et al.
(author)
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Anordning i form av koherent ljuskälla baserad på frekvenskonvertering av ljuset från lasrar : [Controllable laser light source uses two laser sources to enable frequency mixing such that three or four new wavelengths may be generated]
- 1990
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Patent (pop. science, debate, etc.)abstract
- The present invention concerns a coherent light source based on frequency conversion of the radiation from two lasers (20, 21) by frequency mixing in optical waveguides (10; 90), which are provided in a substrate (1). The wavelengths for the two lasers (20, 21) should be such, that the phase matching condition for the optically nonlinear frequency conversion is fulfilled in the waveguide structure (10; 90). The frequency conversion is accomplished in the form of frequency mixing, frequency doubling or down conversion in frequency by parametric oscillation so that in total three or four new wavelengths can be generated. By using integrated optics technique the output radiation can be controlled in various ways, for example be switched to different output waveguides, varied in intensity or colour balance.
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| 8. |
- Barany, George, et al.
(author)
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Poly(ethylene glycol)-containing supports for solid-phase synthesis of peptides and combinatorial organic libraries.
- 1997
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In: Poly(ethylene glycol): Chemistry and Biological Applications, ACS Symp. Series. - Washington, DC : American Chemical Society. - 9780841235373 ; 680, s. 239-264
-
Book chapter (pop. science, debate, etc.)abstract
- The choice of a polymeric support is a key factor for the success of solid-phase methods for syntheses of organic compounds and biomolecules such as peptides and oligonucleotides. Classical Merrifield solid-phase peptide synthesis, performed on low cross-linked hydrophobic polystyrene (PS) beads, sometimes suffers from sequence-dependent coupling difficulties. The concept of incorporating PEG into supports for solid-phase synthesis represents a successful approach to alleviating such problems. This chapter reviews the preparation of families of poly(ethylene glycol)-polystyrene (PEG-PS)graft as well as (highly) Cross-Linked Ethoxylate Acrylate Resin (CLEAR) supports developed in our laboratories, and demonstrates their applications to the syntheses of a wide range of targets in connection with numerous research objectives.
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| 9. |
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| 10. |
- Bierlein, J. D., et al.
(author)
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Segmented waveguides having selected Bragg reflection characteristics
- 1991
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Patent (pop. science, debate, etc.)abstract
- Segmented waveguides for wavelength conversion (e.g., waveguides comprising alternating sections of crystalline substrate having the formula K1-x Rbx TiOMO4 where x is from 0 to 1 and M is P or As and sections of substrate material in which cations of said substrate have been partially replaced) and devices and processes employing segmented waveguides for wavelength conversion are disclosed wherein a periodic structure along the waveguide provides a Bragg reflection having a wavelength essentially equal to the wavelength of the input wave used for wavelength conversion. Also disclosed is a process for preparing a channel waveguide for a wavelength conversion system wherein areas along a portion of a crystal substrate surface used for forming the desired channel are alternately masked and unmasked during cation replacement by immersion in a molten salt.
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