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Sökning: db:Swepub > Persson Anders > Tidskriftsartikel

  • Resultat 241-250 av 514
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241.
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242.
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243.
  • Persson, Anders (författare)
  • De vanartiga doktoranderna
  • 1986
  • Ingår i: Sydsvenska dagbladet. - 1104-0068.
  • Tidskriftsartikel (populärvet., debatt m.m.)
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244.
  • Persson, Anders (författare)
  • Demokratisering eller självexploatering?
  • 1986
  • Ingår i: Häften för kritiska studier. - 0345-4789. ; 19:4, s. 74-77
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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245.
  • Persson, Anders (författare)
  • Den mänskliga frånvaron
  • 1994
  • Ingår i: Helsingborgs Dagblad. - 1103-9388.
  • Tidskriftsartikel (populärvet., debatt m.m.)
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246.
  • Persson, Anders, 1982- (författare)
  • Det går att bomba bort idéer
  • 2023
  • Ingår i: Kvartal. - : Mediehuset Kvartal AB. - 2003-6906. ; :2023-12-07
  • Tidskriftsartikel (populärvet., debatt m.m.)abstract
    • Forskningen visar med all tydlighet att det verkligen går att tvinga stormakter till kapitulation, krossa ideologier med våld och bomba bort idéer. Men kan Israel göra det med Hamas, frågar sig statsvetaren Anders Persson som forskar om Israel–Palestina-konflikten.
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247.
  • Persson, Anders, et al. (författare)
  • Diet shift in fish following competitive release
  • 1999
  • Ingår i: Canadian Journal of Fisheries and Aquatic Sciences. - : Canadian Science Publishing. - 1205-7533 .- 0706-652X. ; 56:1, s. 70-78
  • Tidskriftsartikel (refereegranskat)abstract
    • We determined the diet preference of roach (Rutilus rutilus), perch (Perca fluviatilis), and bream (Abramis brama) before and after a fish removal program in Lake Finjasjön, Sweden. The biomass of roach and bream was reduced to 33 and 10%, respectively, after the program. The predominate diet change following this major reduction in fish biomass was an increased use of benthic organisms by most size-classes of roach. Also, bream shifted to benthos at an earlier ontogenetic stage. These diet shifts were most probably attributed to the drastic reduction in biomass of the benthivorous bream, resulting in underexploited benthic invertebrates. In order to test if alterations in diet choice were reflected in the composition of stable isotopes of consumer tissue, we determined the temporal changes in the 15N/14N ratio (δN) of potential fish prey as well as in fish tissue. No temporal trends were found for δN of fish, possibly due to the high temporal variability in δN of zooplankton. However, minimum and maximum δN values of major food organisms (chironomids and zooplankton) were generally reflected in the δN of both small roach and perch one sampling occasion later (3 months) and in piscivorous perch (exclusively feeding on small fish) two sampling occasions later. Hence, the stable isotope composition could be followed through food links, providing that the consumer mainly fed on one specific food item. However, several other predictions regarding connections between diet and stable isotope composition were not corroborated. We conclude that stable isotope analysis of consumer tissue cannot replace traditional methods of diet determination, but might well provide complementary data.
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248.
  • Persson, Anders (författare)
  • Does Netanyahu really believe in democracy? : Global freedom experts aren't sure
  • 2020
  • Ingår i: Haaretz. - Jerusalem : Haaretz Daily Newspaper Ltd.. ; :2020-03-29
  • Tidskriftsartikel (populärvet., debatt m.m.)abstract
    • Tunisia speeds past Israel’s ailing democracy, even before COVID-19. Netanyahu has ‘anti-democratic tendencies.’ Hungary and Poland protect civil liberties better: How the big three democracy indexes assess Israel.
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249.
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250.
  • Persson, Anders, 1982-, et al. (författare)
  • Dynamic Behaviour and Conditioning Time of a Zirconia Flow Sensor for High-Temperature Applications
  • 2016
  • Ingår i: Sensors and Actuators A-Physical. - : Elsevier BV. - 0924-4247 .- 1873-3069. ; 251, s. 59-65
  • Tidskriftsartikel (refereegranskat)abstract
    • The temperature dependent ion conductivity of yttria stabilized zirconia (YSZ) can be used to create a miniaturized flow sensor using a calorimetric measurement scheme. Such a sensor is compatible with harsh environments, and can sustain temperatures of up to 1000 degrees C, although thermal crosstalk will limit its performance as the temperature rises. This paper investigates if the integration of thermal isolation in the form of sealed cavities can mitigate the detrimental effect of the thermal crosstalk, particularly by studying the conditioning time of the sensor to temperature changes. To this end, high temperature co-fired ceramic (HTCC) sensors were fabricated from tapes of 8 mol-% YSZ that were screen printed with platinum paste. Definition of channels and structures were made by milling the green tapes, and sacrificial inserts were placed in all cavities to give mechanical support during lamination and sintering. Cavities with widths of 240 mu m, 400 mu m and 560 mu m were investigated, and sensors without cavities were also made to serve as references. Additionally, two different positions of the sensor element with respect to the edge of the cavity (560 or 800 mu m) were investigated. The results showed that it was possible to improve the conditioning time of the sensor by up to five times by the use of isolating cavities, and that this improvement is translated into a reduction in rate-dependent hysteresis for measurements with long elapse times. The latter effect is most pronounced for the sensors with the largest cavities.
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  • Resultat 241-250 av 514
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