Search results for "amine"
showing 10 items of 7299 documents
Which lactic acid bacteria are responsible for histamine production in wine?
2005
Aims: To quantify the ability of 136 lactic acid bacteria (LAB), isolated from wine, to produce histamine and to identify the bacteria responsible for histamine production in wine. Methods and Results: A qualitative method based on pH changes in a plate assay was used to detect wine strains capable of producing high levels of histamine. Two quantitative, highly sensitive methods were used, an enzymatic method and HPLC, to quantify the histamine produced by LAB. Finally, an improved PCR test was carried out to detect the presence of histidine decarboxylase gene in these bacteria. The species exhibiting the highest frequency of histamine production is Oenococcus oeni. However, the concentrati…
Reproducibility of regional DEXA examinations of abdominal fat and lean tissue.
2013
Objective: The aim of this study was to develop and test the validity of a new repeatable method to delimit abdominal areas for follow-up of fat mass (FM) and lean tissue mass (LM) in DEXA examinations . Methods: 37 male volunteers underwent two DEXA examinations. Total body FM and LM measurements and corresponding abdominal measurements in a carefully defined region were calculated from the first scan. After repositioning of the subjects and a second scan, the delimited region was copied and the abdominal tissues re-calculated. Results: The mean LM of the abdominal area was 2.804 kg (SD 0.556), and the mean FM was 1.026 kg (SD 0.537). The intra-class correlation coefficient for the repeate…
Integrating Decomposers, Methane-Cycling Microbes and Ecosystem Carbon Fluxes Along a Peatland Successional Gradient in a Land Uplift Region
2021
AbstractPeatlands are carbon dioxide (CO2) sinks that, in parallel, release methane (CH4). The peatland carbon (C) balance depends on the interplay of decomposer and CH4-cycling microbes, vegetation, and environmental conditions. These interactions are susceptible to the changes that occur along a successional gradient from vascular plant-dominated systems to Sphagnum moss-dominated systems. Changes similar to this succession are predicted to occur from climate change. Here, we investigated how microbial and plant communities are interlinked with each other and with ecosystem C cycling along a successional gradient on a boreal land uplift coast. The gradient ranged from shoreline to meadows…
Tutkimusmatka pienyrittäjän työvalmiuksien ytimeen : kirjallisuuteen ja DACUM-analyysiin perustuva kartoitus
2007
This study examines the occupational competence and attitudes that small business entrepreneurs consider essential to their work. Small business entrepreneurs were given an opportunity to express their views in small focus groups of peer entrepreneurs. Consensus opinions formulated by the groups were then meticulously documented. The results expose the very core or soul of entrepreneurial competence and attitudes by determining what small business entrepreneurs feel they must be able to do. Acknowledgement and acceptance of tacit knowledge as part of one's competence and attitudes would introduce a systematic approach to the recording of such knowledge and enable its transfer to co-workers …
Laulava ja liikkuva lapsi : toiminnallisen laulunopetuksen materiaalipaketti alakouluun
2015
Lapselle liike on luontaisin tapa ilmentää musiikkia. Myös laulaminen ja oman äänen käyttö on läsnä lapsen elämässä pienestä pitäen. Koulun musiikintunnilla voisi hyödyntää lapsen luontaista intoa liikkua ja laulaa ja perustaa opetus niille. Tutkimukseni tarkoituksena on luoda toiminnallinen laulunopetuksen materiaalipaketti alakouluun ja testata sitä. Materiaalipakettini perustuu valtakunnallisen perusopetuksen opetussuunnitelman (2014) laulunopetuksen tavotteisiin ja sisältöihin ja uusimpiin musiikin oppimateriaaleihin. Lisäksi olen lisännyt materiaaliin omia ideoitani ja vinkkejäni laulunopetuksesta alakoulussa. Tutkimuksessani punaisena lankana kulkee sana ”toiminnallisuus”, jonka koen …
Teachers as frontline agents of integration: Finnish physical education students’ reflections on intercultural encounters
2018
Background and purpose: This article focuses on how future Physical Education and Dance teachers may be better prepared to work in increasingly diverse education environments. It also discusses how tertiary institutions might address issues of social inclusion and cultural pluralism within their programmes, courses and assignments. The authors critically reflect on an experiential learning intervention in Jyväskylä, Finland, in which trainee PE teachers facilitated kinaesthetic language-learning workshops for asylum seekers. The applied use of physical education and dance in this context was aimed at providing a distinct opportunity to consider a PE teacher’s professional competence and rol…
Transglutaminase and polyamine dependence of effector functions of human immunocompetent cells
1982
AbstractThe effects of the transglutaminase inhibitor dansyl cadaverine (DC) and the polyamine antagonist methyl glyoxal-bis-(guanylhydrazone) (MeGbG) on the response of lymphocytes towards allogeneic and lectin stimulation and on the zymosan-induced chemiluminescence of neutrophilic granulocytes was studied. Application of DC resulted in dose-dependent suppression of chemiluminiscence and lymphocyte proliferation; no difference of inhibitory potential occurred with variation of incubation time in the latter system. MeGbG was inactive in granulocytes, but inhibited lymphocyte proliferation; its effect increased with time. The experiments provide further evidence for the importance of transg…
Pedagogisen johtajuuden tukeminen varhaiskasvatuksessa : varhaiskasvatusyksikön johtajien näkemyksiä Deep Talk - työyhteisön kehittämismenetelmästä
2016
Mesiäislehto, Eveliina. 2016. Pedagogisen johtajuuden tukeminen varhaiskasvatuksessa – Varhaiskasvatusyksikön johtajien näkemyksiä Deep Talk - työyhteisön kehittämismenetelmästä. Varhaiskasvatustieteen pro gradu - tutkielma. Jyväskylän yliopisto. Kasvatustieteiden laitos. 62 sivua. Varhaiskasvatusyksikön johtajien työmäärä on lisääntynyt merkittävästi yksiköiden koon kasvamisen ja erilaisten organisaatiomuutosten takia. Johtajilla ei enää välttämättä ole vastuuta lapsiryhmästä, vaan vastuu keskittyy yksikön henkilöstöön. Näin ollen pedagogiikan johtamisen rinnalla tulee puhua pedagogisesta johtajuudesta. Arvot toimivat sekä pedagogisen johtajuuden että uudenlaisen työyhteisön kehittämismene…
Environmentally Friendly Eutectogels Comprising l-amino Acids and Deep Eutectic Solvents: Efficient Materials for Wastewater Treatment.
2020
Current concerns for sustainability and the environment make low-impact materials desirable for environmental remediation and, in particular wastewater treatment. We obtained supramolecular gels of l-amino acids in the deep eutectic solvent formed by choline chloride and phenylacetic acid. After gel characterization, and investigating gel-sol transition temperatures, gelation kinetics, rheological properties, and morphology, the gels were applied as sorbents to remove cationic dyes from aqueous solutions. The effects of the pH, dye nature, volume, and concentration of wastewater were analyzed, and the best result was obtained with a l-phenylalanine-based eutectogel. It can be reused for at …
Hypogonadism in β-thalassemic adolescents: A characteristic pituitary-gonadal impairment. The ineffectiveness of long-term iron chelation therapy
1990
The pituitary-gonadal function was studied in 18 beta-thalassemic female adolescents, 8 with delayed puberty and 10 with primary amenorrhea,treated with repeated transfusions and long-term iron chelation therapy by subcutaneous infusion. A 100 micrograms gonadotropin-releasing hormone (GnRH) test, a double-bolus GnRH test after estradiol administration in non-responders, a 400 micrograms thyrotropin-releasing hormone (TRH) test and a 'high dose' human menopausal gonadotropin (hMG) test were performed. LH and FSH peak levels were significantly lower in thalassemic patients than in controls, both in the 100 micrograms GnRH test (LH was 4.3 +/- 0.7 mIU/ml vs 40.8 +/- 6.0 mIU/ml and FSH 3.3 +/-…