Eudesmane and rearranged eudesmane sesquiterpenes from Nectandra cissiflora

Four eudesmane-type sesquiterpenes, costic acid (1), 12-carboxyeudesman-3,11(13)-diene (2), viscic acid (3), 3-oxo-γ-costic acid (4) and two rearranged eudesmane derivatives, 3α-hydroxyisoiphion-11(13)-en-12-oic acid (5) and 5β-hydroxy-4-oxo-11(13)-dehydroiphionan-12-oic acid (6), in addition to (-)-epicatechin, have been isolated from the trunk bark of Nectandra cissiflora. This is the first reported occurrence in the Lauraceae of 3-6. The structures of the isolated compounds have been established on the basis of 1D and 2D NMR spectroscopic techniques. The 13C NMR assignments of 3, 5 and 6 are given here for the first time, as well as some corrections to the previously reported chemical shift assignments of 4.

Flavonoides de Lonchocarpus campestris (Leguminosae)

A new flavone named 3,4',5,6-tetramethoxy-[2'',3'':7,8]furanoflavone besides the known flavonoids (2S,3R,4S)-3,4,5,8-tetramethoxy-[2'',3'':6,7]-furanoflavan, 3,6-dimethoxy-2'',2''-dimethylcromene-[2'',3'':7,8] -flavone, 3,5,6-trimethoxy-[2'',3'':7,8]-furanoflavone, 2,4',4,5-tetramethoxy-[2'',3'':6,7]-furanodihydroaurone, (2R,3S,4S)-3,4,5,6-tetramethoxy-[2'',3'':7,8]-furanoflavan and 3',4'-methylenodioxy-5,6-dimethoxy-[2'',3'':7,8]-furanoflavone were isolated from the root barks of Lonchocarpus campestris. The complete ¹H and 13C NMR assignments of the new furan flavonoid was performed using 1D and 2D pulse sequences, including COSY, HMQC and HMBC experiments.

Estudo teórico e experimental de espectros infravermelho de ésteres de ácido graxo presentes na composição do biodiesel de soja

In this work, theoretical and experimental infrared spectra of fatty acid methyl esters (FAME) contained in soybean biodiesel were analyzed seeking the assignments of the relevant vibrational modes to characterize crude soybean oil and soybean biodiesel. The results showed the usefulness of infrared spectra for monitoring saturated and unsaturated compounds as well as impurities (mainly glycerol) in raw samples. This is the first step toward proposing an efficient molecular spectroscopy routine to certify biodiesel fuel.

Flavonoides de Lonchocarpus araripensis (Leguminoseae) - isolamento, atribuição inequívoca dos sinais de RMN ¹H e 13C e análise conformacional

In a continuing investigation for potentially bioactive natural products, flavonoids were isolated from Lonchocarpus araripensis (Leguminoseae) and identified as 3-methoxy-6-O-prenyl-6'',6''-dimethylchromene-[7,8,2'',3'']-flavone (1), 3,6-dimethoxy-6'',6''-dimethylchromene-[7,8,2'',3'']-flavone (2) and 3,5,8-trimethoxy-[6,7,2",3"]-furanoflavone (3). This is the first time compound 3 has been described. Compound 2 has been previously isolated from roots while this is the first time 1 is reported in this species. Complete NMR assignments are given for1 ,2 and 3 together with the determination of conformation for 1.

BLOGS NO ENSINO DE QUÍMICA: ANÁLISE DE COMENTÁRIOS PUBLICADOS EM DISCIPLINA DE COMUNICAÇÃO CIENTÍFICA

Blogs and other technology tools are commonly used in our society. Although we are familiar with the use of technology for social interaction, its application in the classroom environment is still not fully appreciated by the teaching community as a useful learning tool. This paper sheds light on this use by presenting the analysis of the comments posted on a blog used by undergraduate chemistry students for a scientific communication undergraduate course. On the course, students used the blog to ask questions and discuss assignments. All the comments were monitored by the professor and her teaching assistant, who also posted their comments. We analyzed the content of these comments using the model proposed by Henri and adapted by McKenzie and Murphy. The results show a predominance of administrative comments, followed by course content comments. The findings also indicated that this tool complements classroom discussions, supports the participation of students who would otherwise not take part, and allows a continuous learning process for all the students. We concluded that the use of blogs improved the classroom experience and supported the instructional classroom activities.

Konttorinjohtajien organisaatioon sitoutuminen

Tutkielman tavoitteena on kuvata ja ymmärtää konttorinjohtajien organisaatioon sitoutumista, sitoutumisen taustalla olevia tekijöitä sekä sitoutumisesta aiheutuvia seurauksia. Tutkimus on luonteeltaan kvalitatiivinen, jossa tutkimusmetodina on käytetty teemahaastattelua. Tutkimuksen aineisto kerättiin kymmenellä yksilöhaastattelulla tutkimuksen kohteena olevan organisaation konttorinjohtajista. Haastattelut nauhoitettiin, jonka jälkeen ne litteroitiin ja analysoitiin teemoittain. Tutkimustulosten perusteella voidaan konttorinjohtajien organisaatioon sitoutumisen todeta olevan pääasiallisesti affektiivista. Organisaatioon sitoutumiseen vaikuttivat eniten työn itsenäisyyden aste, työtehtävien laaja-alaisuus ja haastavuus sekä työyhteisö ja ilmapiiri. Itsenäisyyden todettiin sitouttavan nimenomaan päätösvallan, vastuun, oman työn organisoinnin ja koko konttorin organisoinnin kautta. Tärkeimmäksi sitoutumisesta aiheutuvaksi seuraukseksi koettiin konttorin tuloksen kasvu.

Palvelun laadun dimensiot ja asiakastyytyväisyys osuuskuntamuotoisissa opinnoissa

Saimaan ammattikorkeakoulun uudessa Luotsi-toimintamallissa opiskelijat oppivat yritysten antamia toimeksiantoja toteuttamalla. Opiskelijat perustavat oman osuuskuntamuotoisen tiimiyrityksen. Suuri osa opetussuunnitelman opintojaksoista toteutetaan tehden asiakasprojekteja. Tutkielman päätavoitteena on selvittää, mitkä ovat palvelun laadun dimensiot osuuskuntamuotoisissa opinnoissa ja millaisina opiskelijat ne kokevat. Tavoitteina on myös käsitellä tapaa, joilla palvelun laatu muodostuu korkeakouluissa sekä tutkia miksi asiakastyytyväisyyttä mitataan ja millaiseksi se koetaan. Teorian pohjalta päädytään tarkastelemaan viittä koulutuksen dimensiota, jotka ovat osa korkeakoulun palvelun laatua ja vaikuttavat asiakastyytyväisyyteen: opetussuunnitelma, oppimisympäristöt, opetusmenetelmät, ohjaus ja opetus sekä osaamisen arviointi. Empiirisen tutkimuksen kohderyhmänä on Luotsi-mallissa aloittanut liiketalouden pilottiryhmä. Tutkimuksessa käytetään kyselylomaketta sekä teemahaastattelua ryh-mälle. Kyselylomake koostuu 108 kysymyksestä, jotka on jaettu kolmeen osaan: tärkeyden, odotusten ja nykytilan arviointiin seitsenportaisella Li-kert-asteikolla. Haastattelun avulla syvennetään aineistoa. Tulokseksi saadaan attribuuttien ja dimensioiden tärkeysjärjestys sekä arvot nykytilalle, odotuksille ja niiden erotukselle. Tulosten pohjalta nostetaan esiin attribuutit, jotka tarvitsevat eniten kehitystoimia. Tutkimusten perusteella voidaan todeta, että eniten kehitystä vaatii ope-tussuunnitelma ja siihen välillisesti liittyvät attribuutit muista dimensioista. Suurin kynnys Luotsi-toimintamallin onnistumiselle on saavuttaa opiskelijoiden ja opettajien välille toimiva keskusteluyhteys sekä kehittää jatkuvasti opetussuunnitelmaa työelämälähtöisemmäksi.

Vuokratyöntekijöiden organisaatioon sitoutuminen

Tutkielman tarkoituksena on tutkia organisaatioon sitoutumisen edellytyksiä ja merkitystä vuokratyössä. Aihetta lähestytään tarkastelemalla vuokratyöntekijöiden sitoutumista henkilöstöä vuokraavaan yritykseen ja tunnistamalla siihen vaikuttavia tekijöitä. Tutkielma on luonteeltaan kvalitatiivinen. Tutkimuksen empiirisen aineiston keruu toteutettiin haastattelemalla kuutta vuokratyöntekijää. Kerätty aineisto analysoitiin teemoittelumenetelmää käyttäen. Tutkielman tulosten perusteella edellytykset organisaatioon sitoutumiselle ovat olemassa vuokratyössä. Vuokratyöntekijöiden sitoutumisen osoittautui luonteeltaan pääasiassa jatkuvaksi. Vuokratyöntekijöiden sitoutumiseen vaikuttaa erityisesti työntekijän asennoituminen vuokratyön tekemiseen. Muita vuokratyöntekijöiden sitoutumiseen vaikuttavia tekijöitä ovat henkilön elämäntilanne, työn merkitys tämän elämässä, palkitseminen, työtehtävien sisältö kokemukset käyttäjäyrityksen työyhteisöstä ja esimiestoiminnasta, vuokrausyrityksen luotettavuus, työtehtävien jatkuvuus ja riittävyys sekä vuokrausyrityksen yhteydenpito ja ammatillisen kehityksen tukeminen.

Essays on auditor independence

Auditor independence is a cornerstone of the auditing profession and the basic principle that underpins the reputation of the auditing profession in the public eye. Indeed, it is the attribute most demanded from auditors by the public. Therefore, the sustainability of the auditing profession depends on how auditors can protect this principle. This dissertation consists of four interrelated essays concerned with auditor independence. Specifically, it examines situations that can threaten and impair auditor independence. In addition, this dissertation also examines several variables that may enhance and protect auditor independence. The first essay aims to examine the impact of social pressures occurring within audit firms on auditors’ judgment in the setting of a society with “high power distance” and “low individualism” cultural dimensions. The social pressures consisted of obedience pressure exerted by an auditor’s superior and conformity pressure exerted by an auditor’s colleague. Moreover, two moderating variables—a multi-dimensional professional commitment and locus of control—were included as moderator variables in the relationship between the social pressures faced by auditors and their judgment. The findings show that obedience and conformity pressures influence auditor judgment. Auditors who face the social pressures will make a judgment that may be even diametrically opposite to the independence principle. The findings also indicate that a multi-dimensional professional commitment and locus of control may potentially influence auditor judgment in a situation with social pressures. The second essay aims to investigate the association of advocacy and familiarity threats caused by auditor fee dependence and auditor tenure on auditor independence based on Finnish data, law, and auditing environment. This essay was motivated by the Green Paper on Audit Policy, published by the European Commission in 2010 that questions whether the maximum fee collected from a client should be regulated and whether consecutive assignments should be limited, among others. Contrary to popular belief, this essay does not find evidence that audit fees and long auditor tenure will jeopardise auditor independence. Therefore, the findings do not support policies to regulate auditor fees or limit auditor tenure in Finland. The third essay aims to examine the effect of client intimidation on auditor independence in an audit-client conflict situation. Intimidation threat is one of five independence threats that are explicitly referenced in the IFAC’s independence framework. Client intimidation was manifested in the client threatening to replace the auditor if the auditor did not adopt the client’s position. In addition, this essay examines the role of auditor’s perceived pressure and multi-dimensions of professional commitment as moderator variables. The findings suggest that auditors who experience client intimidation in an audit conflict situation are more likely to have their independence impaired than those who are in a similar situation but without client intimidation. Moreover, auditors who experience client intimidation perceive higher pressure than those who do not experience intimidation. Finally, auditors’ affective and continuance professional commitment dimensions moderate the relationship between auditors’ perceived pressures and auditor independence. The aim of the fourth essay is twofold. First, it aims to develop a scale for measuring auditors’ reputation awareness. Second, it aims to examine the correlation between the levels of auditor reputation awareness and auditor independence. A seven-item scale was developed as the reputation awareness scale. The findings indicate that the scale consists of one dimension. It also has a level of satisfactory reliability and a high level of validity. The findings show that there is a positive correlation between the level of auditors’ reputation awareness and auditor independence.

The adjustment from Russia to Finland for corporate repatriates: How the repatriation experience influences readjustment in the workplace

To manage foreign operations, companies must often send their employees on international assignments. Repatriating these expatriates can be difficult because they have been forgotten during their posting, and their new experiences are not utilised. In addition to the possible difficulties in organisational repatriation, the returnee can suffer from readjustment problems after a lengthy stay abroad has changed their habits and even identity. This thesis examines the repatriation experience of Finnish assignees returning from Russia. The purpose of the study is to understand how the repatriation experience influences their readjustment to work in Finland. This experience is influenced by many factors including personal and situational changes, the repatriation process, job and organisational factors, and individual’s motives. The theoretical background of the study is founded on two models of repatriation adjustment. A refined, holistic theoretical framework for the study is created. It describes the formation of the repatriation experience and its importance for readjustment to work and retention. The qualitative research approach is suitable for the thesis which examines the returnees’ personal experiences and feelings: a qualitative case study aims to explain the phenomenon in-depth and comprehensively. The data was collected in summer 2013 through semi-standardised interviews with eight Finnish repatriates. They had returned from Russia within the last two years. The data was analysed by structuring the interview transcripts using template analysis. The results supported earlier literature and suggest that the re-entry remains a challenging phase for both the individual and the company. For some, adjusting to a new job was difficult for various reasons. The repatriates underwent personal change and development and felt it was for the better. Many repatriates criticised the company’s repatriation process upon return. Finding a suitable return job was not clear. Instead, the returnees had to be active in finding a new position. Many assignees had only modest career-related motives regarding the assignment and they had realistic expectations about the return. Therefore they were not extremely surprised or dissatisfied when they were not actively offered positions or support by the company. The significance of motives stood out even more than the theory predicted. As predicted, they are linked to the expectations of employees. Moreover, if the employees are motivated to remain in the company, they can tolerate partly a negative repatriation experience. Despite the complexity of the return and readjustment, the assignment as a whole was seen as a rewarding experience by all participants.

Elever syns på nätet : multimodala texter och autentiska mottagare

This study is based on the notion that all students are likely to have a computer of some kind as their primary tool at school within a few years. The overall aim is to contribute to the knowledge of what this development of computer-assisted multimodal text production and communication on and over the net may entail in a school context. The study has an abductive approach drawing on theory from Media and Communication studies and from Pedagogy - particularly on media peda-gogy, multimodality, storytelling, conversation research and deliberative democracy – and is based on a DBR project in three schools. The empirical data are retrieved from four school classes, school years 4 and 5, with good access to computers and digital cameras. The classes have used the class blogs to tell the blog visitors about their school work and Skype to communicate with other classes in Sweden and Tanzania. A variety of research methods was employed: content analysis of texts, observations with field notes and camera documentation, interviews with individual students, group interviews with teachers and students, and a small survey. The study is essentially qualitative, focusing on students’ different perceptions. A small quantitative study was conducted to determine if any factors and variables could be linked to each other and to enable comparisons of the surveyed group with other research results. The results suggest that more computers at school offer more opportunities for real-life assignments and the chance to secure an authentic audience to the students’ production; primarily the students’ parents and relatives, students in the same class and at other schools. A theoretical analysis model to determine the degree of reality and authenticity in various school assignments was developed. The results also indicate that having access to cameras for documenting various events in the classes and to an authentic audience can create new opportunities for storytelling that have not been practiced previously at school. The documentary photo invites a viewer into the present tense of the image and the location where the picture was taken, whoever took the picture. It is used by the students and here too, a model has been developed to describe this relationship. The study also focuses on the freedom of expression and democracy. One of the more unexpected findings is that the students in the study did not see that they can influence other people’s perceptions or change various power structures through communication on the web, neither in nor outside of school.

Laajeneva ohjelmointiesimerkkikokoelma Ohjelmoinnin perusteet -kurssille

Lappeenrannan teknillisen yliopiston Ohjelmoinnin perusteet -kurssin osallistujilla on ollut vaikeuksia aloittelevan ohjelmoijan kannalta laajojen ohjelmien tuottamisessa ja tällaisten ohjelmien jäsentelemisessä aliohjelmiksi. Kurssin harjoitustyö on kuitenkin vaatinut tällaisen laajan ja jäsennellyn ohjelman tuottamista ja osallistujien ongelmat edellä mainittujen asioiden suhteen ovat ilmenneet palautetuista harjoitustöistä. Tässä työssä pyritään tuottamaan ratkaisu edellä kuvattuun ongelmaan konstruktiivisen tutkimuksen keinoin. Työssä tuotettava konstruktio on ohjelmointiesimerkkikokoelma ja sen avulla kurssin osallistujille voidaan esitellä kuinka laajoja ohjelmia voidaan tuottaa vaiheittain ja kuinka tällaisia ohjelmia voidaan jäsennellä aliohjelmiksi.

Neutronisäteilylle altistuminen käytetyn polttoaineen siirrossa Olkiluodon voimalaitoksella

Tässä työssä on tutkittu OL1/OL2-ydinvoimalaitosten käytetyn polttoaineen siirrossa aiheutuvaa altistusta neutronisäteilylle. Käytetty polttoaine siirretään vedellä täytetyssä käytetyn polttoaineen siirtosäiliössä Castor TVO:ssa OL1/OL2-laitoksilta käytetyn polttoaineen varastolle. Siirtotyön aikana useat eri ammattiryhmiin kuuluvat henkilöt työskentelevät siirtosäiliön välittömässä läheisyydessä, altistuen käytetystä polttoaineesta emittoituvalle fotoni- ja neutronisäteilylle. Aikaisemmista neutronisäteilyannosten mittauksista on todettu, ettei jatkuvalle altistuksen seurannalle ole ollut tarvetta. Tämän työn tarkoitus on selvittää teoreettisilla laskelmilla siirtotyöhön osallistuvan henkilön mahdollisuus saada kirjausrajan ylittävä annos neutronisäteilyä. Neutronisäteilyn annosnopeudet siirtosäiliötä ympäröivässä tilassa on laskettu yhdysvaltalaisella Monte Carlo-menetelmään perustuvalla MCNP-ohjelmalla. MCNP:llä mallinnettiin siirtosäiliö, siirtosäiliön sisältämä polttoaine ja ympäröivä tila kolmella jäähtymisajalla ja kolmella keskimääräisellä maksimipoistopalamalla. Polttoainenippujen isotooppikonsentraatiot ja säteilylähteiden voimakkuudet on laskettu Studsvik SNF-ohjelmalla. Simuloinnin perusteella voidaan todeta, ettei neutronisäteilyannosten jatkuvalle seurannalle ole tarvetta käytetyn polttoaineen siirrossa. Vaikka neutronisäteilyn annosnopeudet voivat nousta siirtosäiliön läheisyydessä suhteellisen suuriksi, ovat siirtosäiliön lähellä tehtävät työt niin lyhytaikaisia, että kirjausrajan ylitystä voidaan pitää hyvin epätodennäköisenä. Johtopäätökset varmistetaan työssä suunnitellulla mittausjärjestelyllä.

Harjoitustyön kehittäminen ohjelmoinnin perusteet kurssille

Työn tarkoituksena on luoda uusi harjoitustyö Ohjelmoinnin perusteet –kurssille. Harjoitustyön tavoitteena oli olla nykyistä työtä mielekkäämpi, sekä sidottu käytäntöön. Näiden avulla tavoiteltiin kurssin harjoitustyön suorittavien opiskelijoiden osuuden kasvattamista. Lopputuloksena on kolmeosainen harjoitustyö, jossa opiskelija suorittaa kuvamanipulointia sekä hyödyntää avoimia rajapintoja. Tulevaisuuteen jää haasteeksi harjoitustyön tarkastaminen ja siihen liittyvät ongelmat, sekä työn jatkokehitys.

Pennförare i periferin : österbottniska sockenskrivare 1721-1868

Modern research on literacy, the scriptualization of the administration and the interaction between the governing and the governed as part of the political culture, has brought to the fore the issue of different scripts and their terms. The present dissertation focuses on the parish scribes in the county of Ostrobothnia during the period 1721–1868. The peasantry had been given the right to pay parish scribes in 1624. The parish scribes who were to assist the peasants in connection with the collection of taxes simultaneously supervised the bailiffs who collected the taxes. Their writing skills made the scribes indispensable also in many other contexts. In Ostrobothnia, the peasantry had use for parish scribes, who worked as mediators between Swedish and Finnish, between the oral and the written and vice versa. The aim of this dissertation is on the one hand to explore the recruitment of parish scribes, and on the other to examine the parish scribes as a professional and social group. The parish scribes’ significance for the peasantry in everyday life, local decision-making and in connection with political processes will be analyzed by examining their work and professional activities. The recruitment of parish scribes and has been analyzed as a decision process where different actors were able to influence the election. The parish scribes’ competence requirements and terms of employment have been analyzed. The parish scribes as a professional body or a social group has not previously been explored. The examination of the 154 parish scribes as a professional and social group has been carried out in the form of a collective biography. Parish scribes’ tasks originally consisted of the collection of taxes, but the duties within the parish administration increased in the eighteenth and nineteenth centuries. The private writing assignments consisted of many different documents: bills of sale, probate inventories and estate distributions, wills, land tenancy agreements, life annuity and crofter agreements, promissory notes, auction records and different survey documents. The interaction with state power has been analyzed by examining five political decision-making processes that the peasants actively participated in.