Nordisk politiforskning er et Open Access-tidsskrift. Hele tidsskriftet er tilgjengelig på Idunn: https://www.idunn.no/nordisk_politiforskning/2016/01The expansion of the Norwegian DNA database in 2008, the so called «DNA
reform», was founded on the belief that DNA increases the detection rate of
volume crime significantly. We have conducted a study of Norwegian police
registers to see what effects DNA actually has on detection rates in volume
crime. The good news is that there is little doubt that DNA affects the detection
rate. The overall detection rate for the criminal offenses we have studied in our
selected police districts in the selected period was 8 %. In cases with a DNA
profile the detection rate was 44 %. In cases with hits against the DNA identity
register the detection rate was 81%, and in cases with hits against the DNA
investigation register the detection rate was 62 %. However, the bad news is the
very low proportion of cases where police gather biological samples which
result in a DNA-profile and hits. This implies that no matter how high the
detection rate is in cases with DNA profile, it will not affect the overall
detection rate

Dahl, Johanne Yttri

Lomell, Heidi Mork

Dinamika razgradnje dvaju vrsta listinca (lopuh Petasites spp. i bukva Fagus sylvatica L.)praćena je metodom „vrećica listinca“ u razdoblju od prosinca 2006. do studenog 2007. godine, na dvjema sedrenim barijerama Plitvičkih jezera. Na svakoj postaji eksperiment je proveden u tri vremenske serije na dva reotopa (brza i spora struja vode). Također su analizirane kemijske promjene samog listinca i okolne vode, taloženje sedre na listincu i promjena mase kockica sedre smještenih u vrećice s raspadajućim listincem. Na brzinu razgradnje listinca utječe brzina strujanja vode, temperatura vode i stopa osedravanja, osim u početnoj fazi razgradnje. Utjecaj osedravanja na brzinu razgradnje pokazao se različit za dvije vrste listinca: nakon duže izloženosti i pod utjecajem spore struje uz visok intenzitet taloženja sedre, osedravanje je čak djelovalo inhibitorno na razgradnju bukve, dok je isti proces ubrzavao razgradnju brzoraspadajućeg lopuha. Proces razgradnje listinca uglavnom potiče taloženje sedre osim u početnoj fazi taloženja kalcita (do 30 dana) ili pri manjem intenzitetu osedravanja, kad je zabilježeno otapanje sedre.Decomposition dynamics of two types of litter (butterbur Petasites spp. and beech Fagus sylvatica L.) was analysed in the period from December 2006. to November 2007. on two tufa barriers of Plitvice Lakes. Experiments using leaf bags were carried out in three time series on two rheotopes (fast and slow current velocity) on each barrier. Chemical changes of the litter and the surrounding water were also analysed, as well as tufa deposition on litter surface and weight changes of tufa cubes embedded in the bag with the decaying litter. Litter decomposition rates were dependent on current velocity, water temperature and tufa deposition rate, except in the initial stage. The effect of tufa deposition on the litter decomposition rate proved to be different for the two types of litter: after prolonged exposure to calcification and under the influence of slow currents in combination with high tufa deposition rate, it even acted inhibitory on the decomposition of beech, while the same process accelerated decomposition of fast-decomposing butterbur. Leaf litter decomposition mainly accelerates tufa deposition with the exception of the initial stage of calcite deposition (up to 30 days) or at lower intensity of calcification, when dissolution of tufa was noticed

Belančić, Anita

Repository of Faculty of Science, University of Zagreb

Leaf litter decomposition on tufa barriers

Croatian Digital Dissertations Repository

University of Zagreb Repository

HSN Open Archive