992 resultados para 02172005 TM-6


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Tutkimus on jatkoa Ruralia-instituutin syksyllä 2008 julkaisemalle metsäteollisuuden mahdollisen supistumisen aluetaloudellisia vaikutuksia selvittäneelle työlle. Päivitetty tutkimus on edellistä kattavampi, sillä selvitys ulottuu nyt kaikkiin Suomen massa- ja paperiteollisuuden yrityksiin. Massa- ja paperiteollisuuden vuoden 2007 alusta syksyyn 2009 ilmoittamat pysyvät kapasiteetin leikkaukset ovat yhteensä lähes 19,0 % vuoden 2007 tasoon verrattuna. Massan valmistuksessa menetykset ovat yli 20 % ja paperin/kartongin valmistuksessa noin 17 %. Supistamispäätökset merkitsevät kerroinvaikutuksineen yhteensä 1,4 miljardin euron ja 8 800 henkilötyövuoden menetystä. Kun vähennykset suhteutetaan menetyksiä kärsineiden maakuntien yhteenlaskettuun BKT:n ja työllisten määrään, toimenpiteet vastaavat 2,0 % laskua taloudellisessa kasvussa ja 0,8 % menetystä työllisyydessä. Vuoden 2008 lopulla vastaavat menetykset olivat 0,9 miljardia euroa ja 6 000 henkilötyövuotta. Vaikeudet keskittyvät itäiseen Suomeen. Kymenlaakso on kärsinyt suurimmat menetykset rahallisesti ja työllisten määrässä. Suhteellisesti eniten on menettänyt Kainuu. Pohjois-Savo nousee menettäjänä kolmen kärkeen, jos Stora Enson Varkauden tehtaiden sulkeminen toteutuu vuoden 2010 lopussa. Myös Keski-Suomessa, Lapissa ja Pohjanmaalla on suljettu kokonaisia tehtaita ja tästä on tullut selviä vaurioita. Pienemmillä tappioilla ovat selvinneet Etelä-Karjala, Pohjois-Karjala, Pohjois-Pohjanmaa ja Satakunta, joissa on ollut vain tuotannon seisokkeja ja/tai yksittäisiä tuotantolinjojen sulkemisia. Alueet, joiden elinkeinorakenne on monipuolinen, sopeutuvat nopeammin metsäteollisuuden supistumiseen. Tämä näkyy muun muassa pienempinä työllisyysmenetyksinä. Lisäksi aluetalouden koolla on merkitystä. Pienille aluetalouksille vaikutukset ovat voimakkaammat. Tutkimuksessa tarkasteltiin myös metsäteollisuuden rakennemuutoksen etenemisen vaikutuksia. Jos kehitys jatkuu negatiivisena, kuten Metla esitti keväällä 2009 tai pelätty kauhuskenaario alan tuotannon puoliintumisesta toteutuisi, kansantalouden menetykset olisivat merkittävät. Metlan skenaariossa BKT:n vähentyminen olisi kumulatiivisesti laskettuna suurimmillaan vuosien 2009 ja 2013 aikana, noin 450 miljoonaa euroa. Vastaavasti kauhuskenaariossa summa olisi lähes 700 miljoonaa euroa. Menetystä korostaa talouslama, minkä vuoksi muut alat eivät pysty täysin kompensoimaan massa- ja paperiteollisuuden vaikeuksia. Kokonaistuotanto näyttäisi kuitenkin toipuvan, mikäli nykyinen lama jäisi lyhyeksi. Työllisyys kärsisi huomattavasti kummassakin negatiivisessa skenaariossa. Vastapainoksi tutkittiin myös ns. sisäisen devalvaation sekä paperimarkkinoiden elpymisen vaikutusta. Sisäinen devalvaatio toteutuisi massa- ja paperiteollisuuden maltillisen palkkaratkaisun ja Ruotsin kruunun devalvoitumista vastaavan kustannusedun kautta. Kansainvälisten paperimarkkinoiden elpymisen vaikutusta tutkittiin vientihintoja ja -määriä nostamalla. Näistä tehokkaimmaksi osoittautui vientihintojen nousu. Myönteisten skenaarioiden vaikutusten ja nykyisten päätösten aiheuttamien aluetaloudellisten menetysten vertaaminen kuitenkin paljastaa, että vieläkin parempaa kehitystä vaaditaan. Kymenlaakso ja Pohjois-Savo jäisivät edelleen miinukselle.

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The present collection of articles is based on international conference that was held in Seinäjoki, Finland in February 2009. The topic of the conference was Effective Rural and Urban Policies and it was organised in co-operation between University Consortium of Seinäjoki, Seinäjoki Technology Centre and City of Seinäjoki. The presented papers approached the drivers of regional development from several aspects and in different kind of regional contexts across various countries. As a whole the different contributions formed a comprehensive story of those factors that are shaping the development of both rural and urban regions in global economy. The role of local innovation environment and dynamic of social processes that are ‘oiling’ the interaction between individuals within networks inspired several scholars. Also development of physical infrastructure as well as the recent development of economical models that can predict the regional impacts of large scale investments was discussed in many presentations. Clear focus with cultural and disciplinary diversity formed a fruitful basis for the conference and it was easy to learn something new. On the behalf of all organisers I would like to thank all participants of the conference and especially our foreign colleges who had travelled from distances to spend some winter days in Seinäjoki. As we all know this kind of publication does not appear automatically. All authors have done great job by finding time for writing from their busy schedules. Terttu Poranen and Jaana Huhtala have taken care of the technical editing of this publication. Sari Soini was the main organiser of conference and she has also as a editor kept the required pressure to finalize this book. In addition to University of Helsinki, conference was financially supported by the University of Vaasa, City of Seinäjoki, Lähivakuutus and Regional Centre Programme. These contributions are highly appreciated.

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Thin films are the basis of much of recent technological advance, ranging from coatings with mechanical or optical benefits to platforms for nanoscale electronics. In the latter, semiconductors have been the norm ever since silicon became the main construction material for a multitude of electronical components. The array of characteristics of silicon-based systems can be widened by manipulating the structure of the thin films at the nanoscale - for instance, by making them porous. The different characteristics of different films can then to some extent be combined by simple superposition. Thin films can be manufactured using many different methods. One emerging field is cluster beam deposition, where aggregates of hundreds or thousands of atoms are deposited one by one to form a layer, the characteristics of which depend on the parameters of deposition. One critical parameter is deposition energy, which dictates how porous, if at all, the layer becomes. Other parameters, such as sputtering rate and aggregation conditions, have an effect on the size and consistency of the individual clusters. Understanding nanoscale processes, which cannot be observed experimentally, is fundamental to optimizing experimental techniques and inventing new possibilities for advances at this scale. Atomistic computer simulations offer a window to the world of nanometers and nanoseconds in a way unparalleled by the most accurate of microscopes. Transmission electron microscope image simulations can then bridge this gap by providing a tangible link between the simulated and the experimental. In this thesis, the entire process of cluster beam deposition is explored using molecular dynamics and image simulations. The process begins with the formation of the clusters, which is investigated for Si/Ge in an Ar atmosphere. The structure of the clusters is optimized to bring it as close to the experimental ideal as possible. Then, clusters are deposited, one by one, onto a substrate, until a sufficiently thick layer has been produced. Finally, the concept is expanded by further deposition with different parameters, resulting in multiple superimposed layers of different porosities. This work demonstrates how the aggregation of clusters is not entirely understood within the scope of the approximations used in the simulations; yet, it is also shown how the continued deposition of clusters with a varying deposition energy can lead to a novel kind of nanostructured thin film: a multielemental porous multilayer. According to theory, these new structures have characteristics that can be tailored for a variety of applications, with precision heretofore unseen in conventional multilayer manufacture.

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In the structure of the title compound, C27H39N3O3, each of the (4-oxopiperidin-1-yl)methyl residues adopts a flattened chair conformation (with the N and carbonyl groups being oriented to either,side of the central C-4 plane) and they occupy positions approximatelym orthogonal to the central benzene ring [C-benzene-C-C-methylene-N torsion angles 103.4 (2), -104.4 (3) and 71.9 (3)degrees]; further, two of these residues are oriented to one side of the central benzene ring with the third to the other side. In the crystal packing, supramolecular layers in the ab plane are sustained by C-H center dotcenter dot center dot O interactions.

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The crystal and molecular structure has been determined by the heavy-atom method and refined by the least-squares procedure to R= 8"3 % for 2033 photographically observed reflexions. The compound crystallizes in the space group P]" with two molecules in a unit cell of dimensions a = 11"68 + 0-02, b = 12"91 +0"02, c= 10"43+0"02/~, e= 114"7+ 1, fl=90-2+ 1 and 7,= 118.3+ 1 °. The unit cell also contains one molecule of the solvent, benzene. The 'cage' part of the molecule exhibits a large number of elongated bonds and strained internal valency angles. The bridgehead angle in the bicyclic heptane ring system is 89 °. The acetate group at C(16) and the methyl group at C(15) are cis to each other.

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Tutkimukseni kohteena ovat mies- ja naispuoliset tutkijat ja tohtoriopiskelijat, jotka ovat osallistuneet katalyysitutkimukseen keskittyvän tutkimusverkosto IDECAT:in toimintaan. Tutkielmassani pyrin selvittämään, onko naisten ja miesten tutkijanuran välillä eroa ja jos on, niin minkälainen tämä ero on. Pyrin myös saamaan selville, onko naisten tutkijanuralla esteitä ja esiintyykö tiedeyhteisössä sukupuolesta johtuvaa syrjintää. IDECAT (Integrated Design of Catalytic Nanomaterials for a Sustainable Production) on EU-rahoitteinen, kemian tekniikkaan liittyvään katalyysitutkimukseen keskittyvä tutkimusverkosto, johon kuuluu alan tutkimusyksiköitä ja yliopistoja 12 Euroopan maasta. IDECAT:iin kuuluu noin 500-600 henkilöä. Tutkimukseni pohjautuu kahteen kyselytutkimukseen, jotka toteutettiin Internetissä 2009-2010. Ensimmäinen kyselytutkimus oli vastaajien saatavilla loka-marraskuussa 2009 ja siinä selvitettiin IDECAT:in tutkijoiden ja tohtoriopiskelijoiden tasa-arvotilannetta yleisesti. Kyselyyn vastasi 83 henkilöä, joista 51% oli naisia ja 49 % miehiä. Kyselyssä käytettiin strukturoitua kyselylomaketta ja tulokset analysoitiin kvantitatiivisesti SPSS tilasto-ohjelmalla. Tilastollisena menetelmänä käytän ristiintaulukointia. Toinen kyselytutkimus (jatkokysely) keskittyy tiedeyhteisössä tapahtuvaan sukupuolesta johtuvaan syrjintään ja se oli vastaajien saatavilla huhti-toukokuussa 2010. Jatkokyselyn kysymykset ovat avokysymyksiä ja ne analysoitiin laadullisesti. Jatkokyselyyn vastasi 24 henkilöä, joista 6 kuvasi yksityiskohtaisesti syrjintäkokemuksiaan tiedeyhteisössä. Teoreettisena viitekehyksenä käytän tutkimuksessani Joan Ackerin sukupuolittuneen organisaation teoriaa ja siihen liittyviä, organisaation toiminnassa ilmeneviä sukupuolittuneita prosesseja. Sukupuolittuneet prosessit ovat ajattelutapoja , käytäntöjä ja asenteita, joilla sukupuolet erotetaan toisistaan ja joilla tuotetaan sukupuolten välisiä valtasuhteita. Naisten ja miesten tutkijanuran välillä on aineistossani joitakin merkittäviä eroja. Sukupuolesta johtuva syrjintä on yleistä vastaajien keskuudessa ja naiset ovat kokeneet sitä useammin kuin miehet. 67% naisvastaajista ja 37% miesvastaajista on kokenut sukupuolesta johtuvaa syrjintää. Naisvastaajat myös kokevat miehiä useammin, että he eivät saa riittävästi tukea ja kannustusta esimiehiltään. Lisäksi naisia on pyydetty mukaan tieteelliseen yhteistyöhön miehiä harvemmin. Useimmat muuttujat eivät kuitenkaan tuo eroa sukupuolten välille. Tutkijanaiset kokevat ylenemismahdollisuutensa lähes yhtä hyviksi kuin miehet, naiset ja miehet työskentelevät yhtä usein määräaikaisissa tehtävissä ja naiset työskentelevät kokopäiväisesti lähes yhtä usein kuin miehet. Naiset pitävät perheen ja työn yhdistämistä helppona. Sukupuolittuneita prosesseja ilmenee erityisesti sukupuolten väliseen työnjakoon ja sosiaalisen tuen ja vallan jakoon tiedeyhteisössä liittyvissä tilanteissa. Sukupuolittuneisuus ei kuitenkaan ole totaalista, monien kyselyn muuttujien kohdalla sukupuolittumista tai eroa sukupuolten välille ei tullut. Monet kyselyn muuttujat osoittavatkin, että naiset ja miehet kokevat, että heitä kohdellaan melko tasa-arvoisesti. Tietyillä osa-alueilla epätasa-arvoisen kohtelun kokemukset ovat kuitenkin yleisiä, mikä tuottaa ristiriitaisen kuvan tiedeyhteisön tasa-arvotilanteesta. Tämä voi viitata siihen, että tutkijanaisten ja miesten asemat ja roolit tiedeyhteisössä eivät ole pysyviä ja staattisia, vaan aktiivisessa muutoksen tilassa. Tutkijanaisten asemaa tiedeyhteisössä voidaan lisäksi parantaa reagoimalla ja puuttumalla sukupuolesta johtuvaan syrjintään, pitämällä tasa-arvoasioita esillä sekä kiinnittämällä huomiota johtamiskäytäntöihin, esimerkiksi palkkaamalla lisää naisjohtajia. Avainsanat Keywords: Sukupuolittunut organisaatio, sukupuolittuneet prosessit, kyselytutkimus, kvantitatiivinen tutkimus, tiedeyhteisö, sukupuolisyrjintä, tutkijanaiset, naistutkijat, sukupuolten tasa-arvo, gendered organization, academia, female scientists, gender equality

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All the non-H atoms of the title compound, C10H11NO2, are almost coplanar [maximum deviation = 0.040 (3) angstrom]. The crystal structure is stabilized by C-H center dot center dot center dot O hydrogen bonds.

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Background: Type 2 diabetes is linked to several complications which add to both physical and mental distress. Depression is a common co-morbidity of diabetes which can occur both as a cause and a consequence of type 2 diabetes. Depression has been shown to correlate with glucose regulation and treating depression might prove beneficial for glucose regulation as well as for mental well being. Another complication which might affect diabetes management is cognitive decline. Several risk factors and complications of diabetes might modify the risk for developing cognitive impairment, which is increased 1.5 times among subjects with type 2 diabetes. Type 2 diabetes, depression and impaired cognitive performance have all been linked to low birth weight. This thesis aimed to explore the effects and interactions of birth weight, depression and cognitive ability in relation to type 2 diabetes from a life course perspective. Subjects and methods: Studies I, II and V were part of the Helsinki Birth Cohort Study. 2003 subjects participated in an extensive clinical examination at an average age of 61 years. A standard glucose tolerance test (OGTT) was performed and depressive symptoms were assessed using the Beck Depression Inventory (BDI). In addition data was obtained from child welfare clinics and national registers. A subset of the cohort (n=1247) also performed a test on cognitive performance (CogState ®) at the average age of 64. Studies III and IV were randomised clinical trials where mildly depressed diabetic subjects were treated with paroxetine or placebo and the effect on metabolic parameters and quality of life was assessed. The first trial included 14 women and lasted 10 weeks, while the second trial included 43 subjects, both men and women, and lasted 6 months. Results: Type 2 diabetes was positively associated with the occurrence of depressive symptoms. Among diabetic subjects 23.6% had depressive symptoms, compared to 16.7% of subjects with normal glucose tolerance (OR = 1.77, p<0.001). Formal mediation analysis revealed that cardiovascular disease (CVD) is likely to act as a mediator in the association. Furthermore, low birth weight was found to modify the association between type 2 diabetes, CVD and depression. The association between BDI score and having type 2 diabetes or CVD was twice as strong in the subgroup with low birth weight (≤ 2500g) compared with the group with birth weight > 2500g (p for interaction 0.058). In the six months long randomised clinical trial (study IV) paroxetine had a transient beneficial effect on glycosylated haemoglobin A1c (GHbA1c) and quality of life when compared to placebo after three months of treatment. In study V we found that subjects with known diabetes had a consistently poorer level of cognitive performance than subjects with normal glucose tolerance in most of the tested cognitive domains. This effect was further amplified among those born with a small birth weight (p for interaction 0.002). Conclusions: Type 2 diabetes is associated with a higher occurrence of depressive symptoms compared to subjects with normal glucose tolerance. This association is especially strong among subjects with CVD and those born with a low birth weight. Treating depressed diabetic subjects with paroxetine has no long term effect on glucose regulation. Physicians should be aware of depression as an important co-morbidity of type 2 diabetes. Both depression and the cognitive decline often seen among diabetic subjects are increased if the subject is born with a low birth weight. Physicians should recognise low birth weight as an additional risk factor and modifier of diabetic complications.

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We discuss the assembly of a three-dimensional molecular crystal in terms of short-range supramolecular synthons that spontaneously organize themselves according to Aufbau principles into long-range geometries characteristic of the molecules themselves. For this purpose we have examined the systematic changes in the known crystal structures of a family of fluorobenzenes, C6H6-nFn, where 0 <= n <= 6. Crystal assembly is initiated by forming long-range synthon Aufbau modules (LSAM) that carry the imprint of the synthons. For example, when 1 <= n <= 5 the short-range synthons use H center dot center dot center dot F interactions to form the LSAMs. In the n = 0 and n = 6 compounds, the synthons are H center dot center dot center dot C and F center dot center dot center dot C interactions, respectively. The LSAMs are usually one-dimensional. In this study we show that these 1D LSAMs assemble into 2D quasi-hexagonal close-packed layers. The 3D crystal structure is obtained from the various kinds of close-packing known for these 2D layers. The final stages of this 1D -> 2D -> 3D assembly seem to be more influenced by the packing of LSAMs than by any other factor. In these final stages, there may not be so much influence exerted by the stronger short-range synthons. We discuss the evolution of these fluorobenzene crystal structures in terms of putative LSAMs and the purely geometric relationships between the n and (6 - n) compounds that can thus be expected. Such particle-hole pairs show structural similarities. Our discussion is quantified by the interpretation of intermolecular distances in terms of atomic sizes and with qualitative predictions of magnetic model systems.

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We discuss the assembly of a three-dimensional molecular crystal in terms of short-range supramolecular synthons that spontaneously organize themselves according to Aufbau principles into long-range geometries characteristic of the molecules themselves. For this purpose we have examined the systematic changes in the known crystal structures of a family of fluorobenzenes, C6H6-nFn, where 0 <= n <= 6. Crystal assembly is initiated by forming long-range synthon Aufbau modules (LSAM) that carry the imprint of the synthons. For example, when 1 <= n <= 5 the short-range synthons use H center dot center dot center dot F interactions to form the LSAMs. In the n = 0 and n = 6 compounds, the synthons are H center dot center dot center dot C and F center dot center dot center dot C interactions, respectively. The LSAMs are usually one-dimensional. In this study we show that these 1D LSAMs assemble into 2D quasi-hexagonal close-packed layers. The 3D crystal structure is obtained from the various kinds of close-packing known for these 2D layers. The final stages of this 1D -> 2D -> 3D assembly seem to be more influenced by the packing of LSAMs than by any other factor. In these final stages, there may not be so much influence exerted by the stronger short-range synthons. We discuss the evolution of these fluorobenzene crystal structures in terms of putative LSAMs and the purely geometric relationships between the n and (6 - n) compounds that can thus be expected. Such particle-hole pairs show structural similarities. Our discussion is quantified by the interpretation of intermolecular distances in terms of atomic sizes and with qualitative predictions of magnetic model systems.

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Benzothiazoles are multitarget agents with broad spectrum of biological activity. Among the antitumor agents discovered in recent years, the identification of various 2-(4-aminophenyl) benzothiazoles as potent and selective antitumor drugs against different cancer cell lines has stimulated remarkable interest. Some of the benzothiazoles are known to induce cell cycle arrest, activation of caspases and interaction with DNA molecule. Based on these interesting properties of benzothiazoles and to obtain new biologically active agents, a series of novel 4,5,6,7-tetrahydrobenzo[d]thiazole derivatives 5(a-i) were synthesized and evaluated for their efficacy as antileukemic agents in human leukemia cells (K562 and Reh). The chemical structures of the synthesized compounds were confirmed by H-1 NMR, LCMS and IR analysis. The cytotoxicity of these compounds were determined using trypan blue exclusion, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays. Results showed that, these compounds mediate a significant cytotoxic response to cancer cell lines tested. We found that the compounds having electron withdrawing groups at different positions of the phenyl ring of the thiourea moiety displayed significant cytotoxic effect with IC50 value less than 60 mu M. To rationalize the role of electron withdrawing group in the induction of cytotoxicity, we have chosen molecule 5g (IC50 similar to 15 mu M) which is having chloro substitution at ortho and para positions. Flow cytometric analysis of annexin V-FITC/ propidium iodide (PI) double staining and DNA fragmentation suggest that 5g can induce apoptosis.

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A one pot synthesis of 6-alkylsalicylates and 6-alkyl-2,4- dihydroxybenzoates is described. Cycloaddition of 1-methoxycyclohexa-1,4- or 1,3-dienes with alkylpropiolic esters results in the regio-specific formation of 2-alkyl-6-methoxybenzoates. Thus, methyl 2-methoxy-6-methyl benzoate, methyl 2,4-dimethoxy-6-methylbenzoate, methyl 2,5-dimethoxy-6-methylbenzoate, methyl 2-methoxy-4,6-dimethylbenzoate, and ethyl 2-butyl-4,6-dimethoxybenzoate, have been prepared. By making use of this method, the synthesis of two dihydroisocoumarins namely (±)-mellein (12) and (±)-6-methoxy- mellein (14) is described. Employing a similar strategy, a novel route to 2,5-dialkylresorcinols has been developed. Stemphol (24b) and the antibiotic DB2073 (24d) have been synthesized.