Search results for "Rut"

Alma Mater: 2013/ Rudens

2013

Mārcis Auziņš. Vienīgā Latvijas Universitāte - par izcilību izglītībā un zinātnē; Andra Čudare. Jānis Stradiņš un Mārcis Auziņš: kultūra zinātnē un zinātne kultūrā; Anete Enikova. Pretī akadēmiskajām zināšanām ar ielu sportu asinīs – Ghetto Games stipendiāti; LU Preses centrs. Piepūšamā kinoteātrī uzzini par klimata pārmaiņām Baltijā; Jeļena Poļakova. LU Ērģeles tapa par ziedojumiem – nu laiks tās atjaunot; Andra Čudare. Izcilnieki jeb kad 8 ir slikta atzīme; Indra Gleizde. Latvijas datorzinātniekus pazīst arī pasaulē; Laboratorijās izstrādātos skaistumkopšanas līdzekļus izmēģina brīvprātīgie; Gita Siliņa. Atmiņu pētnieku piedzīvojumi; LU Preses centrs. Iepazīs studijas no skolas brīvajā la…

Experimental study on the influence of paper and pulp mill effluent on the gill parasite communities of roach (Rutilus rutilus)

1996

SUMMARYRoach (n= 81) caught on 23 May, 1992 from oligotrophic, unpolluted Lake Peurunka were kept in cages over a 2-week period before moving half of the fish to nearby Lake Vatia, which is influenced by pulp mill effluents. Before moving the fish gill parasites were examined from 9 fish; 5Dactylogyrusspecies,Gyrodactylussp. andParadiplozoon homoionwere found, the main components of the infracommunities being dactylogyrids. Afterwards, 5 fish from each lake were studied weekly between 1 July and 17 August. Metazoan parasites were recorded from gill arches divided into 4 sections along the dorso-ventral axis.D. crucifer, D. nanus, D. micracanthusandD. suecicusoccurred in both lakes throughou…

Development of monogenean communities on the gills of roach fry (Rutilus rutilus).

1999

The formation and development of monogenean communities on the gills of roach fry was followed in 1992 from early June to October (size range 9 to 47 mm). Roach fry (n=291) were sampled weekly from the small, humic River Rutajoki in central Finland. A further 209 roach fry were reared in a fish farm supplied by water from the river. Four Dactylogyrus species were found: D. nanus, D. crucifer, D. micracanthus and D. suecicus. Other species found on the gills were Gyrodactylus sp. and Paradiplozoon homoion. The first Dactylogyrus juvenile occurred on a 12 mm long fish fry in late June and the first adult (D. nanus) 1 week later in Tank 1. D. nanus was also the most common parasite in the rive…

Gill anomalies of perch and roach from four lakes differing in water quality

1997

This study examined gill anomalies of two common freshwater fish species, roach Rutilus rutilus and perch Perca fluviatilis, collected over five seasons in 1989–1990 from four lakes in central Finland. The lakes differed both in water quality and in fish parasite species composition. Particular attention was paid to the differences in chloride cell proliferation. Gill anomalies were generally more common and abundant in roach than in perch. Chloride cell proliferation was the most frequent histological change in roach but was that least often found in perch. Most of the changes were systemic and light in severity. In perch an unidentified lesion of noncellular eosinophilic inclusions in an …

Gender- and season-dependent relationships between testosterone, oestradiol and immune functions in wild roach

2004

Plasma testosterone and 17β-oestradiol concentrations, differential leukocyte counts and proportion of dead Rhipidocotyle campanula gill parasites (parasite resistance) were determined five times during a year in two populations of roach Rutilus rutilus and analysed for seasonal and gender differences. In addition to the above immune variables, plasma Immunoglobulin M (IgM) concentration, chemiluminescence and migration differential of head kidney phagocytes, size of the spleen, haematocrit and total leukocyte count were correlated with sex hormones for each population, sampling time and sex separately, using condition factor as a partial correlate. There were no clear gender differences in…

Dactylogyrids on the gills of roach in central Finland: Features of infection and species composition

1991

Monogenean parasites were examined from the gills of 660 roach (Rutilus rutilus) in four interconnected lakes in Central Finland between February and November 1986 and in three of the same lakes between February and December 1988. One of the lakes is eutrophic and polluted due to a paper and pulp mill, one is oligotrophic and in a natural state, and the other two lakes are eutrophic. The prevalence of Dactylogyrus infection was always high. Differences between the lakes and the years were observed in the intensity of infection, which was significantly higher in the polluted lake. The intensity was also higher in older fish. Nine Dactylogyrus species were found, and of these D. crucifer and …

The effects of treated effluents on the intensity of papillomatosis and HSP70 expression in roach.

2008

Epidermal papillomatosis in fish has been proposed as an indicator of environmental stress but experimental evidence of connection between contaminants and papillomatosis in fish is scarce. We studied changes in the intensity of epidermal papillomatosis and the expression of heat shock protein 70 (HSP70) in roach, Rutilus rutilus, exposed to treated pulp mill and municipal effluents. In male roach, the increase in papillomatosis intensity was higher in fish exposed to 15% than in fish exposed to 1.5% concentration of municipal effluent. No differences were observed in papillomatosis development in females, or in HSP70 expression. In all the experiments conducted, the increasing effect of ef…

Effects of primary- and secondary-treated bleached kraft mill effluents on the immune system and physiological parameters of roach.

2000

The present study was designed to examine, whether, effluents from a modern pulp and paper mill using elemental chlorine-free/total chlorine-free (ECF/TCF) bleaching, exert effects on the immune system of fish and, in addition, to relate these findings to physiological parameters known to be affected by bleached kraft-mill effluents (BKME). Roach (Rutilus rutilus) were exposed in laboratory conditions to primary- or secondary-treated effluent from a pulp and paper mill. In order to study their capability to respond to foreign antigens they were immunised with bovine gamma-globulin (BGG) prior to exposure. The number of anti-BGG antibody-secreting cells (ASC) and the number of immunoglobulin…

Realizzazione di Giunti Strutturali Mediante Polimerizzazione di Sistemi Adesivi Indotta da Fasci di Elettroni

2007

Religion and Social Integration in France

2013

On some measures, France has the most integrated (and secularised) Muslim population in Europe. For example, attitude research shows that French Muslims share values closer to those of their non-Muslim neighbours than in other European countries (Connor 2010 391). While official sources of data are limited as the French government does not collect statistics organised by religion, ethnicity or any other form of collective identity, a number of private and international surveys have been carried out. Thus, the European Values Survey (2002–6 data) shows that rates of religious observance for Muslims in France are closer to those amongst the majority population than in either Britain or the Ne…