Search results for "kasvu"
showing 10 items of 210 documents
Effects of fumonisin B1 on performance of juvenile Baltic salmon (Salmo salar)
2013
Fumonisin B1 is a mycotoxin produced by fungi of the genus Fusarium that frequently occurs on maize (Zea mays) and feeds containing it. The use of plant-based protein sources in feeds designed for aquaculture has increased due to their low costs compared with fishmeal. This trend has resulted in a global increase in feed formulations contaminated with mycotoxins, producing economical losses in aquaculture industry. The topic also causes concerns because of the potential health consequences that aquaculture products could have on human consumers. FB1 mainly disrupts sphingolipid metabolism and also has immune suppressive effects. Fish mycotoxicosis produces a wide range of symptoms from poor…
Koulukritiikkiin vastaaminen luovuuden ja elinikäisen oppimisen asenteen näkökulmista
2017
Tutkimukseni tehtävänä oli selvittää, miten eri alojen asiantuntijat elinikäisen oppimisen elämänkaarelta tukevat luovuutta ja innostusta heidän omissa työtehtävissään. Lisäksi tiedustelin haastateltavilta, millaisena he näkevät opettajuuden roolin nyt ja tulevaisuudessa. Haastattelututkimukseni lähestymisote oli fenomenografinen, joten tarkastelin tutkittavien käsityksiä. Haastattelin neljässä eri kaupungissa yhdeksää asiantuntijaa keväällä 2016. Heihin kuului opettajia, professoreita ja yritysjohtajia. Haastattelut suoritettiin suullisesti ja kirjallisesti sähköpostin välityksellä. Analysoin aineiston fenomenografisella analyysilla. Tutkimustulokset vahvistivat jo olemassa olevaa teoriaa …
Heikko ravintotilanne rajoittaa hauen (Esox lucius) ja kuhan (Sander lucioperca) kasvua Suotajärvessä
2014
Hauki ja kuha esiintyvät Suomessa usein samoissa vesistöissä, mutta niiden vuorovaikutuksesta tiedetään vain vähän. Mikäli lajit kilpailevat samoista resursseista, runsaat kuhaistutukset tai kuhan luonnollinen yleistyminen voivat vaikuttaa negatiivisesti hauen menestykseen. Tämän tutkimuksen tarkoitus oli selvittää hauen ja kuhan kasvua ja ravinnonkäyttöä Suotajärvessä. Kasvua tarkasteltiin myös suhteessa kasvukausien lämpötilaan. Ravinnonkäytössä keskityttiin hauen ja kuhan ravinnon päällekkäisyyteen ja siitä mahdollisesti seuraavaan ravintokilpailuun. Lisäksi verkkokoekalastuksilla selvitettiin järven kalaston yleistä tilaa, erityisesti ajatellen petokalojen ravintotilannetta. Hauki- ja k…
Centres and peripheries in Finland: Granger causality tests using panel data
2009
Abstract Despite their importance from a policy point of view, empirical studies on the effects of growth centres in their regions are rare. This paper analyses mutual relationships between growth processes in centres and their surrounding hinterlands in 19 Finnish regions. Annual population data from the period 1970–2004 are used. A novel testing procedure based on an extension of the Granger causality definition in a panel data context is applied. Heterogeneity between regions is allowed. Both the homogeneous non-causality hypothesis and the homogeneous causality hypothesis are rejected. Causal processes prove to be heterogeneous. Causality from centres to peripheries is found for nine re…
Quasihyperbolic boundary condition: Compactness of the inner boundary
2011
We prove that if a metric space satisfies a suitable growth condition in the quasihyperbolic metric and the Gehring–Hayman theorem in the original metric, then the inner boundary of the space is homeomorphic to the Gromov boundary. Thus, the inner boundary is compact. peerReviewed
Conflicts related to Human Resource Management in Finnish Project-Based Companies
2020
In contemporary working life of Nordic countries, employee involvement and well-being are emphasized and organizational functions and demands are continuously changing. Thus, the study of human resource management (HRM) practices and their consequences for employees is relevant. This study examines conflicts related to HRM in Finnish project-based companies and provides new information on the implications of conflicts in HRM practices for theorists and practitioners. The research was conducted qualitatively using content and thematic analysis. The findings suggest that conflicts framed within HRM practices are generally the result of the practices and expectations of the organization and ma…
Supporting Creativity and Learning at Work : Practices and Structures from Growth Companies
2021
The constant change embedded in contemporary working life requires employees and organisations alike to continuously learn and, simultaneously, adapt and be creative. The potential to attract, manage and engage creative people, as well as support learning, has become increasingly important in organisational contexts. It is essential to recognise what the underlying learning theories are and how they connect with the current understanding of creativity. It is also important to study different manifestations of creativity and learning and reactively and proactively discover ways of supporting and developing both aspects in contemporary organisations. In this chapter, we first present our appr…
Systemic blockade of ACVR2B ligands protects myocardium from acute ischemia-reperfusion injury
2019
Activin A and myostatin, members of the transforming growth factor (TGF)-β superfamily of secreted factors, are potent negative regulators of muscle growth, but their contribution to myocardial ischemia-reperfusion (IR) injury is not known. The aim of this study was to investigate if activin 2B (ACVR2B) receptor ligands contribute to myocardial IR injury. Mice were treated with soluble ACVR2B decoy receptor (ACVR2B-Fc) and subjected to myocardial ischemia followed by reperfusion for 6 or 24 h. Systemic blockade of ACVR2B ligands by ACVR2B-Fc was protective against cardiac IR injury, as evidenced by reduced infarcted area, apoptosis, and autophagy and better preserved LV systolic function fo…
Infant and childhood growth and frailty in old age : the Helsinki Birth Cohort Study
2018
BackgroundEvidence from life course studies highlights the importance of infant and childhood growth as risk factors for adulthood chronic diseases.MethodsIn this sub-study of the Helsinki Birth Cohort Study, we studied 1078 individuals who had both information on body size from birth to 12 years of age and who were assessed for frailty according to the Fried criteria at the mean age of 71 years.ResultsGreater BMI gain between 2 and 11 years in boys was associated with frailty in old age (age-adjusted RRR 2.36, 95% CI 1.21, 4.63). No similar associations were observed in girls.ConclusionsMen who were frail in old age experienced accelerated BMI gain in childhood compared with those men who …
Association of childhood adversities and home atmosphere with functioning in old age: the Helsinki birth cohort study
2019
Objectivechildhood adversities have been linked with adverse health outcomes, but less is known about the long-term consequences of childhood home atmosphere. We investigated whether childhood adversities and home atmosphere were associated with physical and mental functioning in older age.Methodsin the Helsinki Birth Cohort Study 2003, participants born in the year 1934–44 had data available on nine childhood home atmosphere items, e.g. whether it was supportive and warm (sum score ranged between 0 and 36, higher score indicating better atmosphere), and nine childhood adversities, e.g. unemployment and divorce (sum score 0–9, coded into no; one; and two or more adversities) assessed in 200…