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Sökning: WFRF:(Zhang X) > Högskolan i Halmstad

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1.
  • 2019
  • Tidskriftsartikel (refereegranskat)
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2.
  • Bäckhed, Fredrik, 1973, et al. (författare)
  • Dynamics and Stabilization of the Human Gut Microbiome during the First Year of Life
  • 2015
  • Ingår i: Cell Host & Microbe. - Cambridge : Elsevier BV. - 1931-3128 .- 1934-6069. ; 17:5, s. 690-703
  • Tidskriftsartikel (refereegranskat)abstract
    • The gut microbiota is central to human health, but its establishment in early life has not been quantitatively and functionally examined. Applying metagenomic analysis on fecal samples from a large cohort of Swedish infants and their mothers, we characterized the gut microbiome during the first year of life and assessed the impact of mode of delivery and feeding on its establishment. In contrast to vaginally delivered infants, the gut microbiota of infants delivered by C-section showed significantly less resemblance to their mothers. Nutrition had a major impact on early microbiota composition and function, with cessation of breast-feeding, rather than introduction of solid food, being required for maturation into an adult-like microbiota. Microbiota composition and ecological network had distinctive features at each sampled stage, in accordance with functional maturation of the microbiome. Our findings establish a framework for understanding the interplay between the gut microbiome and the human body in early life.
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3.
  • Landin, L., et al. (författare)
  • Interband transitions in InAs quantum dots in InP studied by photoconductivity and photoluminescence techniques
  • 2004
  • Ingår i: Journal of Applied Physics. - Melville : American Institute of Physics (AIP). - 0021-8979 .- 1089-7550. ; 95:12, s. 8007-8010
  • Tidskriftsartikel (refereegranskat)abstract
    • We report on a detailed investigation of the interband optics of self-assembled InAs dots embedded in a matrix of InP. In photoconductivity (PC) measurements, we observe optical processes related to the dots and a wetting layer, band-to-band excitation of the InP barrier, as well as to an interesting As-related impurity. In particular, the PC measurements reveal the electronic structure of the dots and strongly suggest that an Auger effect is involved in forming the PC signal. Comparing the PC and photoluminescence (PL) signals, we observe that the fundamental transition is not observed in PC, which we interpret in terms of Pauli blocking due to electrons populating the ground state of the dots. In general, it is demonstrated that the PC technique is in many respects complementary to PL and gives additional insight into the electronic structure of quantum dots.
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  • Resultat 1-3 av 3

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