The Pedagogue and the Poetic – Kristeva and the Quest for Singularity in Education

Creative Commons Attribution 4.0 International.In this article, I argue that Julia Kristeva’s concepts of semiotization and transubstantiation may contribute both to an understanding of the way in which the human subject might realize itself, and to the way in which educational institutions may serve as keepers of such a notion of humanity. To focus the human subject is urgent in a time of various neo-liberal pressures – including the area of education. Mechanisms of effectivization and standardization in education are unable to bring forth the singularity of the human being. Inspired by the Russian Futurists and their word-creation, I follow up on the theoretical discussion with a classroom exercise for students, that potentially provides them with a space to begin the process of exploring (regaining) their semiotic selves and their potential to experience and share human singularity.publishedVersio

Effects of Heat Treatment on Composition and Nutritive Value of Herring Meal

1. The effect of heat treatment on quality of herring meal has been investigated using a rotating autoclave operated under variable conditions (meal moisture: 1.1% - 41%; meal temperature: 96° C – 132° C; heating time: 0-2 hrs). 2. In terms of proximate chemical analyses all heat treated meals, containing 82.5-85.0% protein on a dry weight basis, would be considered of a very high grade. 3. Short heat treatments at about 125° C appeared to stabilize the lipid phase towards oxidation during storage: After four weeks an unheated reference meal had a carbonyl number of 323 mmol CO/kg fat whereas heat treated meals had values in the range of 74-91 mmol CO /kg fat. Corresponding iodine numbers were on the average 100 g I2/100 g fat for the unheated meal and 120 g I2/100 g fat for heat treated meals. 4. Analyses indicated some slight decrease in amino acids of the herring meals resulting from the heat treatments. 5. No clear correlation was found between available lysine and conditions of heat treatment, but there was a tendency for availability to decrease with increasing moisture content during prolonged heating of meals. 6. During the heat treatments, pepsin digestibility for dry meals dropped to 66% while that for wet meals dropped at most to about 33% with reference to freeze dried meals. 7. Pepsin digestibility was well correlated with values for nutritive criteria obtained in animal feeding tests. 8. Apparent indigestibility of individual amino acids In two selected meals showed some increase due to heat treatment

Alpha-Tocopherol in Some Marine Organisms and Fish Oils

A study has been made of a-tocopherol in some marine sources. Apart from commercial oils, which were of normal quality, care was taken to ensure fresh material. The a-tocopherol contents have been determined in eleven marine oils, four liver oils and seven body oils. The liver oils showed values from 35-700 µg per g. Cod liver oil ranged from 150-225, whereas Greenland shark liver oil showed very high contents, 300-700 µg a-tocopherol per g. The body oils normally contained 20-80 µg per g, thus eight samples of unspecified fish oils for hydrogenation showed 40-70 µg per g. Capelin oil showed high values, 50-230 µg per g. Fish livers varied greatly, the highest values were found in wrasse and catfish with respectively 108-180 and 290-300 µg a-tocopherol per g. Estimated. values for the liver oils were in the order of 200 µg per g for most species studied, exceptions were again wrasse and catfish with 1540 and 3100 µg per g, respectively. Values of this extremely high order were confirmed in additional analysis on extracted oils from these species. The muscle of ten species of fish were analysed. The a-tocopherol contents varied from 1.0 to 16 µg per g, with a clear tendency for fat fillets to show the highest values. Estimation of the contents in the fats showed values generally in the order 300-500 µg a-tocopherol per g. Some values were confirmed on extracted oils. The distribution of a-tocopherol in different organs were studied on male and female herring, cod and coalfish. There was a striking difference between the content in the liver of the male and female herring. Both were in the spawning state and the male contained ten times more than the female, the estimated values for the liver fat being respectively 7000 and 700 µg per g. No difference of importance could be observed between the testis (soft roe) and ovaries (hard roe), with 32 and 41 µg per g, respectively. The pyloric caeca showed similar values for all species, 8-18 µg per g. The a-tocopherol content of ten species of echinoderms and mollusks were investigated. The analysis refer to the whole animal except for the squid. The values were in the order 4-15 µg per g fresh weight, and approx. 100 µg per g dry weight. Exceptions were the littoral snails periwinckle and limpet, with approx. 40 and 150 µg per g fresh weight, or approx. 200 and 1000 µg per g dry weight, respectively. The high values in the limpet was confirmed in extracted oils. Fat extracted from the deep sea prawn showed 950 µg a-tocopherol per g

Efficiency test bench for Kindernay XIV

Oppgaven er skrevet for CA-Technology ASsubmittedVersionM-MP

Nature and Lability of Northern Adriatic Macroaggregates

The key organic constituents of marine macroaggregates (macrogels) of prevalently phytoplankton origin, periodically occurring in the northern Adriatic Sea, are proteins, lipids and especially polysaccharides. In this article, the reactivity of various macroaggregate fractions in relation to their composition in order to decode the potentially »bioavailable« fractions is summarized and discussed. The enzymatic hydrolysis of the macroaggregate matrix, using α-amylase, β-glucosidase, protease, proteinase and lipase, revealed the simultaneous degradation of polysaccharides and proteins, while lipids seem largely preserved. In the fresh surface macroaggregate samples, a pronounced degradation of the α-glycosidic bond compared to β-linkages. Degradation of the colloidal fraction proceeded faster in the higher molecular weight (MW) fractions. N-containing polysaccharides can be important constituents of the higher MW fraction while the lower MW constituents can mostly be composed of poly- and oligosaccharides. Since the polysaccharide component in the higher MW fraction is more degradable compared to N-containing polysaccharides, the higher MW fraction represents a possible path of organic nitrogen preservation. Enzymatic hydrolysis, using α-amylase and β-glucosidase, revealed the presence of α- and β-glycosidic linkages in all fractions with similar decomposition kinetics. Our results indicate that different fractions of macroaggregates are subjected to compositional selective reactivity with important implications for macroaggregate persistence in the seawater column and deposition

The Atlantic Ocean surface microlayer from 50°N to 50°S is ubiquitously enriched in surfactants at wind speeds up to 13 m s−1

We report the first measurements of surfactant activity (SA) in the sea surface microlayer (SML) and in subsurface waters (SSW) at the ocean basin scale, for two Atlantic Meridional Transect from cruises 50°N to 50°S during 2014 and 2015. Northern Hemisphere (NH) SA was significantly higher than Southern Hemisphere (SH) SA in the SML and in the SSW. SA enrichment factors (EF = SASML/SASSW) were also higher in the NH, for wind speeds up to ~13 m s−1, questioning a prior assertion that Atlantic Ocean wind speeds >12 m s−1 poleward of 30°N and 30°S would preclude high EFs and showing the SML to be self-sustaining with respect to SA. Our results imply that surfactants exert a control on air-sea CO2 exchange across the whole North Atlantic CO2 sink region and that the contribution made by high wind, high latitude oceans to air-sea gas exchange globally should be reexamined

Inorganic carbon and pH dependency of Trichodesmium's photosynthetic rates.

We established the relationship between photosynthetic carbon fixation rates and pH, CO2 and HCO3- concentrations in the diazotroph Trichodesmium erythraeum IMS101. Inorganic 14C-assimilation was measured in TRIS-buffered ASW medium where the absolute and relative concentrations of CO2, pH and HCO3- were manipulated. First, we varied the total dissolved inorganic carbon concentration (TIC) (< 0 to ~ 5 mM) at constant pH, so ratios of CO2 and HCO3- remained relatively constant. Second, we varied pH (~ 8.54 to 7.52) at constant TIC, so CO2 increased whilst HCO3- declined. We found that 14C-assimilation could be described by the same function of CO2 for both approaches but showed different dependencies on HCO3- when pH was varied at constant TIC than when TIC was varied at constant pH. A numerical model of Trichodesmium's CCM showed carboxylation rates are modulated by HCO3- and pH. The decrease in Ci assimilation at low CO2, when TIC was varied, is due to HCO3- uptake limitation of the carboxylation rate. Conversely, when pH was varied, Ci assimilation declined due to a high-pH mediated increase in HCO3- and CO2 leakage rates, potentially coupled to other processes (uncharacterised within the CCM model) that restrict Ci assimilation rates under high-pH conditions