148 research outputs found
Kokemuksia haastavista ja kuormittavista tilanteista varhaiskasvattajien työssä
Opinnäytetyön lisäosan tarkoituksena oli selvittää, millaisia haastavia ja kuormittavia tilanteita varhaiskasvattajat voivat kohdata työssään lasten, huoltajien, työyhteisön ja muiden tilanteiden parissa. Tutkimustehtävä keskittyi erityisesti siihen, millä tavalla haasteisiin voidaan vaikuttaa ja millaisiin tilanteisiin varhaiskasvattajat kokevat itse pystyvänsä vaikuttamaan ja millaisiin eivät. Tutkielmassa käsiteltiin myös varhaiskasvattajien kokemia työn voimavaroja, jotka osaltaan tukevat varhaiskasvattajien työssä jaksamista. Tutkielmassa vertailtiin varhaiskasvattajien ja muskariopettajien kokemuksien samankaltaisuuksia, koska tämä tutkielma täydensi aikaisempaa musiikkipedagogin (AMK) opinnäytetyötäni (Mäkipelto 2014). Teoreettinen viitekehys muodostui tässä tutkielmassa työhyvinvointiin liittyvästä kirjallisuudesta ja aikaisemmasta tutkimuksesta, joissa tarkasteltiin työkäytäntöjen ja työn voimavara- ja kuormitustekijöiden vaikutuksia työhyvinvointiin. Tutkielma toteutettiin kvalitatiivisena eli laadullisena tutkimuksena ja tutkimusmenetelmänä käytettiin puolistrukturoitua teemahaastattelua. Teemahaastattelu analysoitiin teemoittelun ja aineistolähtöisen sisällönanalyysin avulla. Yhteistyökumppanina oli Norlandia päiväkodit. Haastatteluun osallistui neljä varhaiskasvattajaa, joiden kokemukset eivät liittyneet ainoastaan nykyiseen työpaikkaan Norlandian päiväkodissa, vaan ne koskivat myös aikaisempaa työhistoriaa.
Tutkimustulokset osoittivat, että haastavat ja kuormittavat kokemukset liittyivät erityisesti lapsiryhmän hallintaan, huoltajien kohtaamiseen, työyhteisön ristiriitoihin, työn ulkopuoliseen elämään ja työnkuvaan liittymättömiin tilanteisiin kuten siivoamiseen. Ongelmanratkaisukeinoiksi nimettiin lasten parissa tunteiden käsittely ja rauhallinen vuorovaikutus. Varhaiskasvattajat kokivat, että huoltajien parissa auttoi kunnioittava suhtautuminen ja säännöllinen tiedottaminen. Työyhteisössä korostui yhteisten sääntöjen, kommunikoinnin ja toimivan johtajuuden merkitys. Muissa tilanteissa painotettiin työn ulkopuolisesta elämästä huolehtimista. Varhaiskasvattajat kokivat, että lasten perheoloihin ja resurssien puutteeseen he eivät pystyneet vaikuttamaan. Työn voimavaroina painottui lasten riemu ja kehitys, toimiva yhteistyö huoltajien ja työyhteisön parissa sekä oman työn kehittäminen, arvostaminen ja rajaaminen. Edeltävissä tuloksissa oli paljon yhteneväisyyksiä aikaisempien tutkimustulosten kanssa.
Varhaiskasvattajat ja muskariopettajat olivat kokeneet yhtäläisiä haastavia tilanteita erityisesti lapsiryhmän hallintaan, huoltajien kohtaamiseen ja työyhteisössä heikkoon perehdytykseen ja sääntöjen epäselvyyteen liittyvissä tilanteissa. Ongelmanratkaisukeinoina korostui molemmissa ammattiryhmissä lasten parissa keskusteleminen, yhteisten sääntöjen, periaatteiden ja toimintatapojen vahvistaminen. Varhaiskasvattajat ja muskariopettajat kokivat lasten riemun ja työkavereiden tuen voimavaraksi. Johtopäätöksistä ilmeni, että varhaiskasvattajien ja muskariopettajien työssä korostui vuorovaikutuksen merkitys. Mikäli vuorovaikutus oli heikkoa, se aiheutti enemmän kuormitusta. Jos vuorovaikutus toimi, yhteisöllisyys lisääntyi ja toimi voimavarana. Jatkossa voitaisiin tutkia enemmän erityisesti työn ulkopuolisen elämän yhteyttä varhaiskasvattajien hyvinvointiin ja moniammatillisten varhaiskasvattajien erilaisia kokemuksia. Niiden merkitys korostui tässä tutkielmassa ja aikaisemmissa tutkimuksissa.The purpose of the supplementary thesis was to find out what kind of challenging and stressful situations early childhood educators may face in their work with children, guardians, the work community and other situations. The aim was to find ways to influence the challenges and find out which situations early childhood educators feel themselves capable of influencing and which not. The thesis focused also on the strengthening factors experienced by early childhood educators, which contribute to the well-being of early childhood educators. Moreover, the thesis compares similarities between the experiences of early childhood educators and music playschool teachers as this thesis complements my earlier bachelor’s thesis in early childhood music education (Mäkipelto 2014). The theoretical framework of this thesis consists of occupational well-being literature and earlier studies, which examined the effects of work practices and work strength and stress factors on occupational well-being. The thesis was carried out as qualitative research and a semi-structured thematic interview was used as the research method. The thematic interview was analyzed with theme and content analysis. The cooperation partner was Norlandia Päiväkodit. Four early childhood educators participated in the interview. Their experiences were not only related to the current job at the Norlandia kindergarten, but also on past work history.
The results demonstrated that challenging and stressful experiences were especially related to group management with children, the interaction with guardians, conflicts in the work community, life outside the workplace, and work assignment issues not included in the job description such as cleaning. Problem solving included emotional management and peaceful interaction with children. Early childhood educators felt that respect and regular information helped with guardians. In the work community the importance of common rules, communication and effective leadership were emphasized. The life outside of work was emphasized in other situations. Early childhood educators felt that they were unable to influence children's family conditions and lack of resources. The work strength-factors consisted of the joy and development of children, effective cooperation with guardians and the work community, as well as the development, appreciation and delimitation of their own work. These results had several similarities with previous research results.
Early childhood educators and music playschool teachers had experienced similar challenging situations, especially in the group management with children, the interactions with guardians, and in the work community in situations involving weak orientation and unclear rules. Both professional groups solved problems by discussing with children and enforcing common rules and principles. Both professional groups felt that the joy of children and support from colleagues strengthened their work resources. The study concluded that interaction is important for both early childhood educators and music playschool teachers. If interaction was weak, it caused more stress. If it worked, communality increased and it served as a strength factor. The occupational wellbeing of early childhood educators could be studied further by focusing on life-factors outside work and a multi-professional perspective. The importance of these perspectives was emphasized in this thesis and former studies
History of water and health from ancient civilizations to modern times
Abstract This paper examines the influence of water on public health throughout history. Farming, settling down and building of villages and towns meant the start of the problems mankind suffers from this very day -how to get drinkable water for humans and cattle and how to manage the waste we produce. The availability of water in large quantities has been considered an essential part of a civilized way of life in different periods: Roman baths needed a lot of water as does the current Western way of life with water closets and showers. The importance of good quality drinking water was realized already in antiquity, yet the importance of proper sanitation was not understood until the 19th century
Sata vuotta vesihuoltoa Suomessa 1917-2017
Tässä dosentti Petri Juutin, dosentti Tapio Katkon ja kT Riikka Rajalan kirjoittamassa vertaisarvioidussa monografiassa on kuvattu koko Suomen vesihuollon eli vedenhankinnan ja jätevesihuollon historia sadan vuoden ajalta. Kirjan ensimmäisessä osassa taustoitetaan vesihuollon yhteiskunnallista merkitystä ja kuvataan lyhyesti keskeiset kehitysvaiheet.
Toisessa osassa kuvataan tutkimuksen kohteena olevien vesilaitosten keskeisiä vaiheita ja valintoja. Teoksen loppuosassa on tutkimuksen vertaileva analyysi ja lopputulokset sekä tulevaisuuden haasteet ja mahdollisuudet. Sata vuotta vesihuoltoa Suomessa 1917-2017 teos on osa Valtioneuvoston kanslian koordinoiman Suomen itsenäisyyden satavuotisjuhlavuoden 2017 ohjelmaa.Suomi Finland 10
Sata vuotta vesihuoltoa Suomessa 1917-2017
100 years of water supply and sanitation in Finland This book is written by Petri S. Juuti, Tapio S.Katko & Riikka P. Rajala.
Finland is known as a land of thousands of lakes. Yet, there are regions in Finland where lakes are very few and the lack of fresh water is an ordinary problem. Finland is quite unique in Fennoscandia as to its water resources. The country has some 56 000 lakes with a minimum area of one hectare and all together 200000 lakes. Ground water occurs in alluvial eskers formed during ice ages, the last of which ended some 10 000 years ago. Nowadays some 60 per cent of the people use natural or artificially recharged ground water. However, areas lower than 50–60 metres above sea level have problems with water quality due to geological reasons. In such areas bigger cities use surface water for their water supply or acquire their raw water from sources further away. The book shows us how water supply and sanitation have developed in Finland during years of political independence starting from the year 1917.Tässä dosentti Petri Juutin, dosentti Tapio Katkon ja TkT Riikka Rajalan kirjoittamassa vertaisarvioidussa monografiassa on kuvattu koko Suomen vesihuollon eli vedenhankinnan ja jätevesihuollon historia sadan vuoden ajalta. Kirjan ensimmäisessä osassa taustoitetaan vesihuollon yhteiskunnallista merkitystä ja kuvataan lyhyesti keskeiset kehitysvaiheet. Toisessa osassa kuvataan tutkimuksen kohteena olevien vesilaitosten keskeisiä vaiheita ja valintoja. Teoksen loppuosassa on tutkimuksen vertaileva analyysi ja lopputulokset sekä tulevaisuuden haasteet ja mahdollisuudet. Sata vuotta vesihuoltoa Suomessa 1917-2017 teos on osa Valtioneu-voston kanslian koordinoiman Suomen itsenäisyyden satavuotisjuhlavuoden 2017 ohjelmaa
Insights into the O : C-dependent mechanisms controlling the evaporation of α-pinene secondary organic aerosol particles
The volatility of oxidation products of volatile organic
compounds (VOCs) in the atmosphere is a key factor to determine if they
partition into the particle phase contributing to secondary organic aerosol
(SOA) mass. Thus, linking volatility and measured particle composition will
provide insights into SOA formation and its fate in the atmosphere. We
produced α-pinene SOA with three different oxidation levels
(characterized by average oxygen-to-carbon ratio; O:C‾=0.53, 0.69, and 0.96) in an oxidation flow reactor. We investigated the
particle volatility by isothermal evaporation in clean air as a function of
relative humidity (RH <2 %, 40 %, and 80 %) and used a
filter-based thermal desorption method to gain volatility and chemical
composition information.
We observed reduced particle evaporation for particles with increasing
O:C‾ ratio, indicating that particles become more resilient to evaporation with
oxidative aging. Particle evaporation was increased in the presence of water
vapour and presumably particulate water; at the same time the resistance of
the residual particles to thermal desorption was increased as well. For SOA
with O:C‾=0.96, the unexpectedly large increase in mean thermal desorption
temperature and changes in the thermogram shapes under wet conditions
(80 % RH) were an indication of aqueous phase chemistry. For the lower
O:C‾ cases, some water-induced composition changes were observed. However, the
enhanced evaporation under wet conditions could be explained by the
reduction in particle viscosity from the semi-solid to liquid-like range, and
the observed higher desorption temperature of the residual particles is a
direct consequence of the increased removal of high-volatility and the
continued presence of low-volatility compounds.</p
Combined effects of boundary layer dynamics and atmospheric chemistry on aerosol composition during new particle formation periods
Characterizing aerosol chemical composition in response to
meteorological changes and atmospheric chemistry is important to gain
insights into new particle formation mechanisms. A BAECC (Biogenic
Aerosols – Effects on Clouds and Climate) campaign was conducted during the
spring 2014 at the SMEAR II station (Station for Measuring Forest
Ecosystem–Aerosol Relations) in Finland. The particles were characterized by
a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). A
PBL (planetary boundary layer) dilution model was developed to assist
interpreting the measurement results. Right before nucleation events, the
mass concentrations of organic and sulfate aerosol species were both
decreased rapidly along with the growth of PBL heights. However, the mass
fraction of sulfate aerosol of the total aerosol mass was increased, in
contrast to a decrease for the organic mass fraction. Meanwhile, an increase
in LVOOA (low-volatility oxygenated organic aerosol) mass fraction of the
total organic mass was observed, in distinct comparison to a reduction of
SVOOA (semi-volatile OOA) mass fraction. Our results demonstrate that, at
the beginning of nucleation events, the observed sulfate aerosol mass was
mainly driven by vertical turbulent mixing of sulfate-rich aerosols between
the residual layer and the newly formed boundary layer, while the
condensation of sulfuric acid (SA) played a minor role in interpreting the
measured sulfate mass concentration. For the measured organic aerosols,
their temporal profiles were mainly driven by dilution from PBL development,
organic aerosol mixing in different boundary layers and/or partitioning of
organic vapors, but accurate measurements of organic vapor concentrations
and characterization on the spatial aerosol chemical composition are
required. In general, the observed aerosol particles by AMS are subjected to
joint effects of PBL dilution, atmospheric chemistry and aerosol mixing in
different boundary layers. During aerosol growth periods in the nighttime,
the mass concentrations of organic aerosols and organic nitrate aerosols
were both increased. The increase in SVOOA mass correlated well with the
calculated increase in condensed HOMs' (highly oxygenated organic molecules)
mass. To our knowledge, our results are the first atmospheric observations
showing a connection between increase in SVOOA and condensed HOMs during the
nighttime.</p
Small intestinal mucosa expression of putative chaperone fls485
<p>Abstract</p> <p>Background</p> <p>Maturation of enterocytes along the small intestinal crypt-villus axis is associated with significant changes in gene expression profiles. <it>fls485 </it>coding a putative chaperone protein has been recently suggested as a gene involved in this process. The aim of the present study was to analyze <it>fls48</it>5 expression in human small intestinal mucosa.</p> <p>Methods</p> <p><it>fls485 </it>expression in purified normal or intestinal mucosa affected with celiac disease was investigated with a molecular approach including qRT-PCR, Western blotting, and expression strategies. Molecular data were corroborated with several <it>in situ </it>techniques and usage of newly synthesized mouse monoclonal antibodies.</p> <p>Results</p> <p>fls485 mRNA expression was preferentially found in enterocytes and chromaffine cells of human intestinal mucosa as well as in several cell lines including Rko, Lovo, and CaCo2 cells. Western blot analysis with our new anti-fls485 antibodies revealed at least two fls485 proteins. In a functional CaCo2 model, an increase in fls485 expression was paralleled by cellular maturation stage. Immunohistochemistry demonstrated fls485 as a cytosolic protein with a slightly increasing expression gradient along the crypt-villus axis which was impaired in celiac disease Marsh IIIa-c.</p> <p>Conclusions</p> <p>Expression and synthesis of fls485 are found in surface lining epithelia of normal human intestinal mucosa and deriving epithelial cell lines. An interdependence of enterocyte differentiation along the crypt-villus axis and fls485 chaperone activity might be possible.</p
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Evolution of particle composition in CLOUD nucleation experiments
Sulphuric acid, ammonia, amines, and oxidised organics play a crucial role in nanoparticle formation in the atmosphere. In this study, we investigate the composition of nucleated nanoparticles formed from these compounds in the CLOUD (Cosmics Leaving Outdoor Droplets) chamber experiments at CERN (Centre européen pour la recherche nucléaire). The investigation was carried out via analysis of the particle hygroscopicity, ethanol affinity, oxidation state, and ion composition. Hygroscopicity was studied by a hygroscopic tandem differential mobility analyser and a cloud condensation nuclei counter, ethanol affinity by an organic differential mobility analyser and particle oxidation level by a high-resolution time-of-flight aerosol mass spectrometer. The ion composition was studied by an atmospheric pressure interface time-of-flight mass spectrometer. The volume fraction of the organics in the particles during their growth from sizes of a few nanometers to tens of nanometers was derived from measured hygroscopicity assuming the Zdanovskii–Stokes–Robinson relationship, and compared to values gained from the spectrometers. The ZSR-relationship was also applied to obtain the measured ethanol affinities during the particle growth, which were used to derive the volume fractions of sulphuric acid and the other inorganics (e.g. ammonium salts). In the presence of sulphuric acid and ammonia, particles with a mobility diameter of 150 nm were chemically neutralised to ammonium sulphate. In the presence of oxidation products of pinanediol, the organic volume fraction of freshly nucleated particles increased from 0.4 to ~0.9, with an increase in diameter from 2 to 63 nm. Conversely, the sulphuric acid volume fraction decreased from 0.6 to 0.1 when the particle diameter increased from 2 to 50 nm. The results provide information on the composition of nucleated aerosol particles during their growth in the presence of various combinations of sulphuric acid, ammonia, dimethylamine and organic oxidation products
Rapid growth of new atmospheric particles by nitric acid and ammonia condensation
New-particle formation is a major contributor to urban smog, but how it occurs in cities is often puzzling. If the growth rates of urban particles are similar to those found in cleaner environments (1–10 nanometres per hour), then existing understanding suggests that new urban particles should be rapidly scavenged by the high concentration of pre-existing particles. Here we show, through experiments performed under atmospheric conditions in the CLOUD chamber at CERN, that below about +5 degrees Celsius, nitric acid and ammonia vapours can condense onto freshly nucleated particles as small as a few nanometres in diameter. Moreover, when it is cold enough (below −15 degrees Celsius), nitric acid and ammonia can nucleate directly through an acid–base stabilization mechanism to form ammonium nitrate particles. Given that these vapours are often one thousand times more abundant than sulfuric acid, the resulting particle growth rates can be extremely high, reaching well above 100 nanometres per hour. However, these high growth rates require the gas-particle ammonium nitrate system to be out of equilibrium in order to sustain gas-phase supersaturations. In view of the strong temperature dependence that we measure for the gas-phase supersaturations, we expect such transient conditions to occur in inhomogeneous urban settings, especially in wintertime, driven by vertical mixing and by strong local sources such as traffic. Even though rapid growth from nitric acid and ammonia condensation may last for only a few minutes, it is nonetheless fast enough to shepherd freshly nucleated particles through the smallest size range where they are most vulnerable to scavenging loss, thus greatly increasing their survival probability. We also expect nitric acid and ammonia nucleation and rapid growth to be important in the relatively clean and cold upper free troposphere, where ammonia can be convected from the continental boundary layer and nitric acid is abundant from electrical storms
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