Tuotantolinjojen kriittisten varaosien kartoitus ja varastointi

Tämän insinöörityön tarkoituksena on selvittää CROWN Pakkaus Oy:n tuotantolinjojen kriittiset varaosat mahdollisten seisokkien lyhentämiseksi ja varaston ylläpitämiseksi niiden osalta. Työssä lähdettiin liikkeelle tutkimalla olemassa olevaa varastointijärjestelmää ja selvittämällä sen rakenteita. Tämän jälkeen aloitettiin kartoitus kynä ja paperi -tekniikalla tuotantolinjoilta, tärkeimmät kohteet ja koneet parhaiten tuntevien henkilöiden kanssa. Tietojen keruussa käyttiin myös CROWN Pakkaus Oy:n käyttämää tietokantapohjaista kunnossapidon toiminnanohjausjärjestelmää Artturia, jota CROWN Pakkaus Oy käyttää varaosavaraston ylläpitoon. Työ aloitettiin tehtaan alkupäästä eli painosta ja linjoilla edettiin kone kerrallaan. Kun yksi linja saatiin tutkittua ja selvitykset valmiiksi, siirrettiin tiedot koneelle Excel-taulukko-ohjelman avulla. Tietojen avulla selvitettiin manuaaleista ja muista lähteistä osiin liittyvät tiedot, joista alettiin rakentaa Excel-pohjaista taulukointia kriittisille varaosille. Taulukot tallennettiin tehtaan sisäiseen verkkoon, joten ne olivat koko työn ajan näkyvissä tehtaan henkilökunnalle. Taulukoiden valmistuttua ne viimeisteltiin vielä ja niiden jatkokäyttö on CROWN Pakkauksen omissa käsissä. Työssä saaduista tuloksista voidaan päätellä 80/20-säännön pitävän tässäkin tapauksessa melko hyvin paikkansa. Kartoitettujen varaosien osuus oli 26,6 % varaosavaraston kokonaisuudesta. Avainsanat: kriittiset varaosat, varastointi.

Tukkivannesahojen teräpyörien bombeerauslaitteen kehittäminen

Diplomityössä kehitettiin kannettava työstölaite, jolla voidaan bombeerata tukkivannesahojen suuret teräpyörät omilla laakereillaan paikoillaan sahalinjoissa. Teräpyörät kuluvat käytössä, jolloin ne joudutaan työstämään uudelleen muotoonsa useita kertoja vuodessa. Nykyisin pyörien kehäpinnat hiotaan haluttuun muotoon lähes sadan vuoden ikäiseen keksintöön perustuvalla menetelmällä. Menetelmän suurimpina ongelmina ovat saavutettavan bombeerausmuodon heikko tarkkuus, työstötapahtuman hitaus ja puutteellinen työturvallisuus. Kehitetyn bombeerauslaitteen ja -menetelmän avulla parannetaan kaikkia kolmea merkittävää puutetta. Työssä kartoitettiin kattavasti erilaisia mahdollisia työstömenetelmiä, joita voitaisiin käyttää teräpyörien bombeeraukseen. Parhaaksi vaihtoehdoksi osoittautui sorvaus, jonka avulla teräpyörien kehäpinnat saadaan työstettyä tarkasti, nopeasti ja varmasti käyttämällä tavallisia sorvin työkaluja ja uutta ehdotettua kannettavaa sorvia.

Agentes complexantes: podante, coronante e criptante classificação e nomenclatura

The scientific and practical interest in crown ethers as complexing agents for actions as well as for anions and neutral low molecular species is undeniable. New molecules with crown ether properties are constantly synthesized and new application discovered. This paper presents classification and nomenclature of the classical oligoethers (crown ethers): monocyclic coronands; oligocyclic spherical cryptands; and acyclic podands.

Novas tendências para o tratamento de resíduos industriais contendo espécies organocloradas

The toxic character of organochloride compounds, their habitual presence in many industrial effluents, and mainly the low efficiency of the current remediation processes, are important aspects that have been promoted to study new degrading technologies. Among the great number of new physical and chemical alternatives, the photochemical and electrochemical processes have been played an important role, mainly due to their high degradation capacity through relatively low-cost procedures. In these contexts biological processes, the use of white-rot fungi, or even ligninolytic enzymes produced from them, are also very promising alternatives. However, the necessity of long reaction time and the high cost of the enzyme production process are some of the drawbacks that difficult the definitive consolidation of these processes.

Sevillian transport jars in early colonial America: the case of Santa María La Antigua del Darién (Colombia)

Within the scope of the TECNOLONIAL (HAR2008-02834/HIST) project, an archaeologi- cal and archaeometric research is being conduct- ed in order to clarify and systematize transport jars production in the Iberian peninsula and their distribution abroad, especially to the Americas, from the 15th to the 17th century. The production centre of Seville, in the Crown of Castile, produced large glazed and unglazed transport jars, called botijas, which were mainly devoted to the Atlantic trade network. The pres- ent study accounts for the first results obtained from an initial sample of 34 transport jars dated around the 15th-16th centuries from the produc- tion centre of Seville and the reception site of Santa María de la Antigua del Darién (gulf of Urabá, Colombia). This latter site is especially significant since it was the first Spanish founda- tion (1510) in continental America that obtained the title of town, and was the seat for the Governor of the new region called Castilla de Oro, as well as for the first diocese. All individuals were analyzed by means of x-ray fluorescence and diffraction analyses and then compared with the majolica production database from Seville. The results enabled us to define the first refer- ence groups for such modern transport jars, and to get a first insight into the jars coming to the Americas in the early 16th century whose prove- nance can be linked to Seville, but not Triana.

Ralstonia solanacearum, a widespread bacterial plant pathogen in the post-genomic era

Ralstonia solanacearum is a soil-borne bacterium causing the widespread disease known as bacterial wilt. Ralstonia solanacearum is also the causal agent of Moko disease of banana and brown rot of potato. Since the last R. solanacearum pathogen profile was published 10 years ago, studies concerning this plant pathogen have taken a genomic and post-genomic direction. This was pioneered by the first sequenced and annotated genome for a major plant bacterial pathogen and followed by many more genomes in subsequent years. All molecular features studied now have a genomic flavour. In the future, this will help in connecting the classical field of pathology and diversity studies with the gene content of specific strains. In this review, we summarize the recent research on this bacterial pathogen, including strain classification, host range, pathogenicity determinants, regulation of virulence genes, type III effector repertoire, effector-triggered immunity, plant signalling in response to R. solanacearum, as well as a review of different new pathosystems.

La caixa de núvia: un procés del segle XIV

A fourteenth century caixa de nuvia (a bride’s case). This article studies a bride’s case, or chest described in the records of a trial that took place in the late fourteenth century, preserved in the Archives of Crown of Aragon. The case was claimed by Eulàlia, a commoner from the region of Barcelona. We study the circumstances of the claim, and then consider the descriptions of the items and the relations between the items and the owner. We stress the structures and the functionality of the chest itself and the meticulous description of contents , mainly second hand household wear and engagement presents. We highlight the relationship between women, especially between the mother and the daughter, and the relationship between these women and their possessions

Uma visão sobre a estrutura, composição e biodegradação da madeira

Wood is the main raw material used in the pulp and paper industry. It is a material that presents heterogeneous structure and complex composition, which results in a relatively resistant material to the biodegradation process. In the present review, we attempted to summarize the structural characteristics of wood and describe the chemical nature of its major components to, afterwards, comment about its biodegradation. The role of the enzyme manganese peroxidase in the lignin degradation by a selective white-rot fungus, Ceriporiopsis subvermispora, was highlighted.

Latvusmuodon mittaus ja mallitus metsän fysikaalisia heijastusmalleja varten

Seloste artikkelista: Crown envelope shape measurements and models. Silva Fennica 42 (2008) : 1, s. 19-33.

Elävän latvuksen supistumisen vaikutus neulasten alkuainepitoisuuksiin männiköissä

Seloste väitöskirjasta: Effects of living crown reduction on needle element status of Scots pine. Dissertationes Forestales 64.

Mancha foliar e podridão de frutos da acerola causadas por Calonectria ilicicola

A new leaf spot and fruit rot disease is reported on barbados cherry (Malpighia glabra), occurring in the State of Maranhão, Brazil, caused by the fungus Calonectria ilicicola.

Phomopsis sp. causando podridão em frutos de bacurizeiro

A fruit rot detected in "bacurizeiro" (Platonia insignis) was demonstrated to be caused by Phomopsis sp.

Rhizoctonia zeae causando podridão em milho no estado do Pará

The occurrence of corn rot caused by Rhizoctonia zeae is reported for the first time in the State of Pará, Brazil.

Podridão de frutos de melancia causada por Sclerotium rolfsii no estado de Alagoas

A new fruit rot disease caused by Sclerotium rolfsii on watermelon (Citrullus lanatus) was observed in the State of Alagoas. The pathogenicity of the fungus was confirmed by artificial inoculations.This is the first report of S. rolfsii causing fruit rot in watermelon in Northeast of Brazil.