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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source

Larsson, Anna January 2008 (has links)
<p>Saproxylic species living in old hollow trees have low dispersal rate. Many of the species are threatened since their micro habitats are rare. To prevent some of these species from going extinct their habitats have to have the right management. In some areas artificial environment could be a solution. The aim of this study was to investigate if the insects that are dependent on tree cavities with wood mould would colonize an artificially created habitat: large wooden boxes filled with artificial wood mould placed on tree trunks. The boxes were filled with substrates like oak saw dust, oak leaves, dead hens, hen excrements, medicago (Medicago falcata flour) or potatoes. Over three years, 136 species and 10 380 specimens were caught in 47 boxes. The groups classified as specialists were in general statistically significant more often than groups classified as generalists. Dead hen was the substrate with the highest number of species, although differences were small. In conclusion, a large number of species, including red listed ones and saproxylic specialists used the boxes. A dead hen in the box gave some extra species and 1800 meters was too long for some of the species to disperse. Hence, the prospects for using artificial environments are good especially to reduce habitat availability gaps in time and space.</p>
42

Modeling the impact of wood and fiber traits on the production costs of corrugated containers

Fernández Olivares, Jacobo Luis, January 2004 (has links) (PDF)
Thesis (M.S. in P.S. & E)--School of Chemical Engineering, Georgia Institute of Technology, 2004. Directed by Howard (Jeff) Empie. / Includes bibliographical references (leaves 80-82).
43

Evaluation of the impact of non-uniform neutron radiation fields on the dose received by glove box radiation workers

Crawford, Arthur Bryan 28 August 2008 (has links)
Not available / text
44

Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source

Larsson, Anna January 2008 (has links)
Saproxylic species living in old hollow trees have low dispersal rate. Many of the species are threatened since their micro habitats are rare. To prevent some of these species from going extinct their habitats have to have the right management. In some areas artificial environment could be a solution. The aim of this study was to investigate if the insects that are dependent on tree cavities with wood mould would colonize an artificially created habitat: large wooden boxes filled with artificial wood mould placed on tree trunks. The boxes were filled with substrates like oak saw dust, oak leaves, dead hens, hen excrements, medicago (Medicago falcata flour) or potatoes. Over three years, 136 species and 10 380 specimens were caught in 47 boxes. The groups classified as specialists were in general statistically significant more often than groups classified as generalists. Dead hen was the substrate with the highest number of species, although differences were small. In conclusion, a large number of species, including red listed ones and saproxylic specialists used the boxes. A dead hen in the box gave some extra species and 1800 meters was too long for some of the species to disperse. Hence, the prospects for using artificial environments are good especially to reduce habitat availability gaps in time and space.
45

Tänka utanför boxen : Målkort och löneboxar som motivationsfaktorer

Ceder, Anna, Barwinger Plogare, Karin January 2013 (has links)
Titel: Thinking outside the box: Goals and Salary boxes as motivational factors Authors: Anna Ceder and  Karin Barwinger Plogare Seat of Learning: Uppsala University Purpose: The purpose of this study was to investigate if the imposition of salary boxes in Uppsala municipality has had any influence on the organisation’s employees’ to improve their work motivation. The reason for the study was to look deeper into employees’ motivational factors, this with a focus on salary as motivational factor in structures of salary boxes where it is possible for the employee to work towards goals which affect their salary. The primary purpose of the study was to look into if employees’ ability to advance their performance had any connection to the impostion of salary boxes. Methodology: In order to collect as much data as possible for the measurements one of the largest occupational groups in Uppsala municipality was chosen, which represents the group of pre-school teachers. In total there are 758 staff members in the professional group of pre-school teachers in Uppsala municipality who were all contacted to participate in the study through a survey questionnaire. The answers from the questionnaire were then tested and analyzed in forms of linear and binary regression analyses to check the significance of the independent variables both separetely with the dependent variable and all variables together in an attempt to identify the most significant motivational factor. Results: The results showed that the significant motivational factors for pre-school teatchers was the ones which represent organizational commitment and the goal setting theory. Keywords: Motivation, salary boxes, individual payment, individual salary, work motivation
46

The research and development of multi-purpose forms and vessels

Waddle, Robert L. January 2001 (has links)
This creative project consisted of the artist creating various box forms that were to house treasures that were considered special to the artist or the viewer. His childhood memories and his appreciation of streamline design heavily influenced him. Metal is one of the hardest materials to form and shape but the artist was able to create soft edges and curved forms by using his past experience with the material. He experimented with various surface techniques from patinas to sandblasting and polishing to create the appearance he desired in each piece. By combining wood and metal he created successful works that worked well together forming relationships between the two and were visually stimulating. He was able to create boxes within boxes with hidden compartments that could hide special treasures. This project proved to be a success for the artist, not only did he learn more about the building techniques and develop new surface treatments, but he designed and created the pieces he had envisioned at the beginning artistic career. / Department of Art
47

Cannibalism in laying hens : characteristics of individual hens and effects of perches during rearing /

Yngvesson, Jenny, January 2002 (has links) (PDF)
Diss. (sammanfattning) Skara : Sveriges lantbruksuniv., 2002. / Härtill 4 uppsatser.
48

NTA som verktyg för naturvetenskap i förskolan : En intervjustudie om NTA:s roll i arbetet med naturvetenskap på förskolan / NTA as a tool for natural science in the pre-school : An interview study on NTA's role in the work with science at the preschool

Johan, Zetterberg January 2017 (has links)
The purpose of this study is to contribute knowledge about the pre-school teachers' view of the role NTA plays in the field of science education. NTA, which stands for Natural Science and Technology for All, is a concept for school development offered for preschool and elementary school. The study uses semi structured interviews. Six preschool teachers at a preschool from four different departments have been interviewed. All preschool teachers have completed NTA training to work with natural science themed boxes. The result shows that NTA is used both planned and spontaneously. Most often, the chil- dren work with the experiments in the boxes in smaller groups, but on some occasions the thematic experiments are used as a demonstration for larger groups. As to how NTA influenced the other teaching, the study shows that it helped to visualize the natural science work and increase the scientific aware- ness of the educators. One conclusion of the survey is that the work on the thematic boxes is an inspiration for the natural science work in the preschool and that the educators are positively prepared for this work. / Syftet med denna studie är att bidra med kunskap kring förskollärarnas syn på vilken roll NTA har för naturvetenskapsundervisningen. NTA som står för Naturvetenskap och Teknik för Alla är ett koncept för skolutveckling som erbjuds förskola och grundskola. I studien används semistrukturerade intervjuer. Sex förskollärare på en förskola från fyra olika avdelningar har intervjuats. Alla förskollärarna har gått NTA:s utbildning för att arbeta med naturvetenskapsinriktade temalådor. Resultatet visar att NTA används både planerat och spontant. Oftast får barnen arbeta med experimenten i lådorna i mindre grupper men vid vissa tillfällen används temalådornas experiment som demonstration för större grupp. När det gäller hur NTA påverkat den övriga undervisningen visar studien att den hjälpt synliggöra det naturvetenskapliga arbetet och ökat den naturvetenskapliga medvetenheten hos pedagogerna. En slutsats av undersökningen är att arbetet med temalådorna är en inspiration för det naturvetenskapliga arbetet i förskolan och att pedagogerna är positivt inställda till detta arbete.
49

Pesquisa de Salmonella spp. em codornas de corte (Coturnix coturnix japonica)

Ângela, Henrique Lopes da [UNESP] 22 February 2011 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:27:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-22Bitstream added on 2014-06-13T19:15:41Z : No. of bitstreams: 1 angela_hl_me_jabo.pdf: 243396 bytes, checksum: 9765d16340d67683042c66b0d809b1a0 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / No Brasil, existem vários relatos da detecção de Salmonella spp. em carne de aves comercias e do envolvimento dessa carne com surtos de infecção em humanos. Contudo, estudos relacionados à epidemiologia desta bactéria em codornas de corte são praticamente inexistentes. Desse modo, elaborou-se o presente trabalho em quatro lotes de uma granja produtora de codornas destinadas ao abate com o objetivo de pesquisar Salmonella spp. em amostras de mecônio presentes no cepilho de madeira utilizado para forrar o fundo das caixas de transporte das codornas de corte antes de serem alojadas, em amostras de fezes cecais durante o crescimento das aves, aos 7, 14, 21, 28 e 35 dias de vida e no momento do abate, aos 36 dias de vida, em amostras de água do tanque de escaldamento, do tanque de resfriamento e de carcaças. Os exames microbiológicos demonstraram presença de Salmonella spp. em amostras de mecônio colhidas em caixas de transporte de codornas de corte com um dia de vida, nos lotes um, dois e três, nas amostras de fezes cecais colhidas aos 7, 14, 21, 28 e 35 dias de vida, na água do tanque de resfriamento e nas carcaças dos lotes um, dois e três. No lote 2, esta bactéria foi isolada na água do tanque de escaldamento. Foram identificados 8 sorovares, sendo: S. enterica sub-espécie enterica 4, 5, 12, S. Corvalis, S. Give, S. Lexington, S. Minnesota, S. Schwarzengrund, S. Rissen e S. Typhimurium / This work was elaborated in four flocks of a quail farm producer for slaughter in order to search for Salmonella spp. in meconium samples present in the shaver of wood used to line the bottom of the boxes for transporting the meat quails before being housed, in caecal stool samples during the life of the birds at 7, 14, 21, 28 and 35 days life and at slaughter at day 36 of life in water samples from the scalding tank, cooling tank and carcasses. The microbiological tests showed the presence of Salmonella spp. in the meconium samples collected in transport boxes of one-day old quails, in lots one, two and three, in caecal stool samples collected at 7, 14, 21, 28 and 35 days in water cooling tank and the carcasses of lots one, two and three. In batch 2, the bacteria were isolated in the water tank of scalding. Were isolated Eight different serotypes, S. enterica subspecies enterica 4, 5, 12, S. Corvalis, S. Give, S. Lexington, S. Minnesota, S. Schwarzengrund, S. Rissen and S. Typhimurium
50

Pesquisa de Salmonella spp. em codornas de corte (Coturnix coturnix japonica) /

Ângela, Henrique Lopes da. January 2011 (has links)
Orientador: Ângelo Berchieri Junior / Banca: Karin Werther / Banca: Nilce Maria Soares / Resumo: No Brasil, existem vários relatos da detecção de Salmonella spp. em carne de aves comercias e do envolvimento dessa carne com surtos de infecção em humanos. Contudo, estudos relacionados à epidemiologia desta bactéria em codornas de corte são praticamente inexistentes. Desse modo, elaborou-se o presente trabalho em quatro lotes de uma granja produtora de codornas destinadas ao abate com o objetivo de pesquisar Salmonella spp. em amostras de mecônio presentes no cepilho de madeira utilizado para forrar o fundo das caixas de transporte das codornas de corte antes de serem alojadas, em amostras de fezes cecais durante o crescimento das aves, aos 7, 14, 21, 28 e 35 dias de vida e no momento do abate, aos 36 dias de vida, em amostras de água do tanque de escaldamento, do tanque de resfriamento e de carcaças. Os exames microbiológicos demonstraram presença de Salmonella spp. em amostras de mecônio colhidas em caixas de transporte de codornas de corte com um dia de vida, nos lotes um, dois e três, nas amostras de fezes cecais colhidas aos 7, 14, 21, 28 e 35 dias de vida, na água do tanque de resfriamento e nas carcaças dos lotes um, dois e três. No lote 2, esta bactéria foi isolada na água do tanque de escaldamento. Foram identificados 8 sorovares, sendo: S. enterica sub-espécie enterica 4, 5, 12, S. Corvalis, S. Give, S. Lexington, S. Minnesota, S. Schwarzengrund, S. Rissen e S. Typhimurium / Abstract: This work was elaborated in four flocks of a quail farm producer for slaughter in order to search for Salmonella spp. in meconium samples present in the shaver of wood used to line the bottom of the boxes for transporting the meat quails before being housed, in caecal stool samples during the life of the birds at 7, 14, 21, 28 and 35 days life and at slaughter at day 36 of life in water samples from the scalding tank, cooling tank and carcasses. The microbiological tests showed the presence of Salmonella spp. in the meconium samples collected in transport boxes of one-day old quails, in lots one, two and three, in caecal stool samples collected at 7, 14, 21, 28 and 35 days in water cooling tank and the carcasses of lots one, two and three. In batch 2, the bacteria were isolated in the water tank of scalding. Were isolated Eight different serotypes, S. enterica subspecies enterica 4, 5, 12, S. Corvalis, S. Give, S. Lexington, S. Minnesota, S. Schwarzengrund, S. Rissen and S. Typhimurium / Mestre

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