Méthode Eleméntaire de Violoncelle Oeuvre 60

Sellonsoitto-oppaan op. 60 ranskankielinen versio.

Effect of meal ingestion on liver stiffness in patients with cirrhosis and portal hypertension.

BACKGROUND AND AIMS: Liver stiffness is increasingly used in the non-invasive evaluation of chronic liver diseases. Liver stiffness correlates with hepatic venous pressure gradient (HVPG) in patients with cirrhosis and holds prognostic value in this population. Hence, accuracy in its measurement is needed. Several factors independent of fibrosis influence liver stiffness, but there is insufficient information on whether meal ingestion modifies liver stiffness in cirrhosis. We investigated the changes in liver stiffness occurring after the ingestion of a liquid standard test meal in this population. METHODS: In 19 patients with cirrhosis and esophageal varices (9 alcoholic, 9 HCV-related, 1 NASH; Child score 6.9±1.8), liver stiffness (transient elastography), portal blood flow (PBF) and hepatic artery blood flow (HABF) (Doppler-Ultrasound) were measured before and 30 minutes after receiving a standard mixed liquid meal. In 10 the HVPG changes were also measured. RESULTS: Post-prandial hyperemia was accompanied by a marked increase in liver stiffness (+27±33%; p<0.0001). Changes in liver stiffness did not correlate with PBF changes, but directly correlated with HABF changes (r = 0.658; p = 0.002). After the meal, those patients showing a decrease in HABF (n = 13) had a less marked increase of liver stiffness as compared to patients in whom HABF increased (n = 6; +12±21% vs. +62±29%,p<0.0001). As expected, post-prandial hyperemia was associated with an increase in HVPG (n = 10; +26±13%, p = 0.003), but changes in liver stiffness did not correlate with HVPG changes. CONCLUSIONS: Liver stiffness increases markedly after a liquid test meal in patients with cirrhosis, suggesting that its measurement should be performed in standardized fasting conditions. The hepatic artery buffer response appears an important factor modulating postprandial changes of liver stiffness. The post-prandial increase in HVPG cannot be predicted by changes in liver stiffness.

En färd i språket. Festskrift till Marketta Sundman på 60-årsdagen den 12 mars 2009

Marketta Sundman är en uppskattad forskare och en ansedd akademisk lärare. Till hennes forskningsintressen hör framför allt nusvenskansgrammatiska struktur, tvåspråkighet och inlärning av svenska som främmande språk. Det grammatiska studiet av svenskan representeras i hennes vetenskapliga produktion först och främst av den gedigna doktorsavhandlingen Subjektsval och diates i svenskan (1987). Problem kring tvåspråkighet har hon behandlat ingående t.ex. i monografierna Tvåspråkigheten i skolan: en undersökning av språkfärdigheten hos en- och tvåspråkiga grundskoleelever i Finland (1994) och Barnet, skolan och tvåspråkigheten (1998). Under de senaste åren har hon intresserat sig för inlärning av svenska som främmande språk och för närvarande leder hon ett av Svenska litteratursällskapet i Finland finansierat forskningsprojekt med titeln På väg mot kommunikativ kompetens: Tillägnandet av svenskans struktur hos finska inlärare Marketta Sundmans vetenskapliga verksamhet har uppmärksammats även i Sverige; år 2008 tilldelades hon av Svenska Akademien ett pris som årligen tillerkänns en person som ”genom sin verksamhet har gjort särskilt viktiga insatser för svenska språket.” Artiklarna i denna festskrift är skrivna av personer som har anknytning till olika tidsperioder under Markettas akademiska bana – hennes ”färd i språket”. En del av dem kan karakteriseras som akademiska mentorer, en del som kolleger – tidigare eller nuvarande – och en del som adepter till henne. Detta har också varit vårt mål; vi ville bjuda in både namnkunniga nordister och unga forskare från jubilarens närmaste bekantskapskrets. Vi riktar ett stort tack till artikelförfattarna som trots den kärva tidtabellen ville ställa upp! Festskriften publiceras endast i elektroniskt format. Vid Åbo universitet är den därmed den första av sitt slag. Vår förhoppning är att artiklarna tack vare det nya mediet kommer att få stor spridning och vara lättillgängliga för alla intresserade.

Estudo da degradação do herbicida ácido 2,4- diclorofenoxiacético (2,4-D) por meio da radiação gama do cobalto-60 em solução aquosa contendo ácido húmico

The use of pesticides in agriculture presents some problems to ecosytems as a consequence of their remaining in the environment. Conventional methods for environmental decontamination sometimes just transfer these residues from one place to another. The use of gamma radiation from cobalt-60 to induce 2,4-D degradation in aqueous solution containing humic acid was studied. Results show that the herbicide is completely degraded after treatment with a 30 kGy dose. There were decreases in the degradation of the 2,4-D when humic acid was added at all doses. Some radiolytic products are proposed. The 2,4-D radiolytic yields (G) from 2,4-D were calculated.

Cassava and corn starch in maltodextrin production

Maltodextrin was produced from cassava and corn starch by enzymatic hydrolysis with alpha-amylase. The cassava starch hydrolysis rate was higher than that of corn starches in maltodextrin production with shorter dextrose equivalent (DE). DE values do not show directly the nature of the obtained oligosaccharides. Maltodextrin produced from cassava and corn starch was analysed by high performance liquid chromatography (HPLC), and the analysis showed that maltodextrin production differs according to the source of the starch. This is important in defining the application of the maltodextrin, according to its desired function.

Determination of corn stalk fibers' strength through modeling of the mechanical properties of its composites

Worldwide cultivation of corn is expanding, due in part to the increasing production of bioethanol. In consequence, huge amounts of corn stalks residues are been produced. Instead of incineration, we transformed the corn stalks into a semichemical pulp and successfully applied it as reinforcement in polypropylene composites. PP composites reinforced with 40% wt corn stalk single fibers were prepared, and their mechanical properties were evaluated. Through mechanical properties modeling of the composites, the intrinsic tensile strength of the cellulosic fibers that constitute the corn stalk have been determined

Rheological and thermal characteristics of wheat gluten biopolymers plasticized with glycerol

The objective this work was to obtain bioplastics from mixtures of wheat gluten and glycerol by two different processes and evaluate their respective rheological properties. The mixtures and their respective bioplastics were obtained through direct batch mixing under approximately adiabatic and isothermal conditions. The bioplastics showed high values for the storage (G') and loss (G") moduli, suggesting a stronger protein network formed in both processes. The temperature onset and the percentage of weight loss to be estimated were found to be near in both bioplastics. The bioplastics have demonstrated to be materials of interesting potential of use as biodegradable barrier materials.

Produção de concentrados de ácidos graxos por hidrólise de óleos vegetais mediada por lipase vegetal

The aim of this work was to verify the ability of enzymatic crude extract from dormant castor bean seeds to yield concentrated fatty acids by hydrolysis of polyunsaturated vegetable oils such as corn and sunflower. The enzymatic extract exhibited higher activity towards corn oil, which was selected for further studies to determine optimum hydrolysis conditions by factorial design. Maximum hydrolysis percentage (≈84%) was reached at 60% wt. oil:buffer acetate 100 mM pH 4.5, 33 ºC and 5.0% wt. of crude extract after 70 min of reaction. These results suggest that the use of low-cost lipase from castor bean seeds has potential for oil hydrolysis.

Etelä-Pohjanmaan kartta 1550-60 [Kartta-aineisto] : kokoilemia muinaistutkinnon alalta / julkaissut J. R. Aspelin.

Liittyy julkaisuun Kokoilemia muinaistutkinnon alalta / J. R. Aspelin.