Crystal plasticity model calibration for 316l stainless steel single crystals during deformation

Type 316L austenitic stainless steel is an important structural material used for the in-core components and pressure boundaries of light water reactors. In order to study degradation mechanisms in such a steel, like crack initiation and propagation, it is crucial to develop reliable crystal plasticity models at microscale that would account for anisotropic nature of the material and realistic modelling of grain topology. In this work we present a procedure for calibrating material properties of a slip-based crystal plasticity finite element model and investigate its suitability as a constitutive model for single-crystal tensile test simulations. The material properties include the anisotropic elastic and crystal plasticity material parameters that are calibrated against experimental tensile test curves for 316L stainless steel single crystals at selected crystallographic orientations. For the crystal plasticity material parameters a systematic sensitivity study using Bassani and Wu hardening law is performed

Henkilöstötuottavuuden raportoinnin kehittäminen Palmiassa

Opinnäytetyön tavoitteena oli pohtia henkilöstötuottavuuden raportoinnin kehittämistä ja hyödyllisyyttä toimeksiantajayritykselle. Tarkoituksena oli mahdollisuuksien selvittäminen henkilöstötuottavuuden seuraamiseksi ja tunnuslukujen saatavuuden kartoittaminen. Tavoitteena oli myös arvioida käytännön tunnuslukujen kautta henkilöstötuottavuutta kahden eri Palmian koulu- ja päiväkotipalveluiden aluepäällikön alueiden välillä. Toimeksiantajayrityksellä ei ollut käytössä selkeää mallia henkilöstötuottavuuden seuraamiseksi. Opinnäytetyö tehtiin kehittämishankkeena, ja se koostuu teoriaosuudesta sekä tunnuslukujen vertailusta ja raportoinnin kehittämismahdollisuuksista. Raportissa oli alkuun johdanto, joka käsitti työn sisällön ja aihepiirin esittelyn. Sen jälkeen käsiteltiin teoriaosuus, jossa oli tietoa henkilöstötuottavuudesta, organisaation rakenteesta ja kehitysvaiheista, työhyvinvoinnin merkityksestä henkilöstötuottavuuteen sekä esiteltiin raportissa käytettävät tunnuslukujen kaavat. Raportin lopussa oli vertailua kahden eri alueen tunnusluvuista ja arviointi henkilöstötuottavuuden raportoinnin mahdollisuuksista toimeksiantajayrityksessä. Raportissa huomioitiin näkökulma toimeksiantajayrityksen liiketoimintamallin tilanteesta. Raportin prosessin edetessä tuli esille, ettei esimiesten tarvitsemia tunnuslukuja henkilöstötuottavuuden seuraamiseksi ole helposti saatavana. Myös vertailulukujen saaminen toimialan muilta yksityisiltä yrityksiltä ei ole mahdollista yritysten salassapitovelvollisuuden vuoksi. Julkiselta sektorilta luvut on mahdollista saada, mutta vertailu on työlästä, koska toiminnoissa on eroja.The aim of the present study was to develop the ways of reporting personnel productivity and its usefulness for the client company. The purpose was to identify possible solutions for following up personnel productivity and to find out the availability of the key indicators. The client company did not have a clear model for monitoring personnel productivity. The theoretical part was based on literature of personnel productivity. It dealt with organizational structure and stages of development, the meaning of well-being in work life and different calculation formulas. This study was a development project and consisted of a theoretical part and a comparison of indicators and reporting of development opportunities. At the end of the report was to compare the indicators in two different areas and assessment of personnel productivity reporting possibilities of the client company. These figures were obtained from the company's financial reports. During the process, it became clear that the needed indicators for the managers to follow were not readily available. Additionally, it proved to be problematic to get the figures from other companies due to confidentiality which prevented the comparison between different companies. The comparison of indicators is possible and report showed that it is useful to start develops of monitoring of personnel productivity

On the propagation of disturbances in certain fluid flows

Imperial Users onl

Phase behaviour of colloidal assemblies on 2D corrugated substrates

We investigate - with Monte Carlo computer simulations - the phase behaviour of dimeric colloidal molecules on periodic substrates with square symmetry. The molecules are formed in a two-dimensional suspension of like charged colloids subject to periodic external confinement, which can be experimentally realized by optical methods. We study the evolution of positional and orientational order by varying the temperature across the melting transition. We propose and evaluate appropriate order parameters as well as the specific heat capacity and show that the decay of positional correlations belongs to a class of crossover transitions while the orientational melting is a second-order phase transition.Comment: 13 pages, 9 figures, accepted in J. Phys.: Condens. Matte

Intelligent electronic design for mechatronic systems

EThOS - Electronic Theses Online ServiceGBUnited Kingdo

The Changing Roles of Female Visual Artists in Morocco

Female artists are actively participating in the development and growth of visual arts in Morocco. This article seeks to highlight their important contribution in the Moroccan visual arts. It deals with the access of women to the field of visual art, delineates successive categories for understanding the types of work female artists have engaged in since the independence of the country in 1956, and the challenges that these artists have been facing. It focuses on the artistic experiences of specific artists, believed to be, representative of some historical era or artistic trend. Moreover, it tries to put these artists into a cultural and historical framework to contextualize their artistic production

Histopathologic risk factors in oral and oropharyngeal squamous cell carcinoma variants: an update with special reference to HPV-related carcinomas

Accurate identification of the microscopic risk factors of oral and oropharyngeal (OP) squamous cell carcinomas (SCC) and their morphologic variants is of at most importance, as these generally determine treatment modalities, prognosis and overall patient outcome. The great majority of oral and oropharyngeal squamous cell carcinomas are microscopically described as kerartinizing squamous cell carcinoma (KSCC). They bear certain resemblance to keratinizing stratified squamous epithelium. Tobacco habits and excessive consumption of alcoholic beverages have been considered to be the main etiologic agents in these carcinomas. The tumors occurred in older patients more commonly affected the oral tongue and floor of the mouth with well established morphologic risk factors including tumor grade, pattern of invasion and perineural involvement. Within the last 30 years however, the advent and expanding prevalence of high risk human papillomavirus (HPV) as an important etiologic agent for head and neck squamous cell carcinoma, particularly in the OP, has resulted in a significant change in the established morphologic criteria for risk assessment. The majority of HPV relate carcinomas of the OP are nonkeratinizing squamous cell carcinoma (NKSCC). These tumors are found to be more responsive to treatment with a favorable patient outcome and good prognosis. Consequently, alterations in treat - ment protocols aimed at de-escalation are currently being evaluated. More recently, other morphologic variants that are HPV positive are reported with increasing frequency in the OP and other head and neck sites. As a result, several clinical and pathologic questions have emerged. Importantly, whether the virus is biologically active in these tumors and involved in their pathogenesis, and second, what are the clinical implications with regard to patient management and outcome in the HPV-related variants. Examples of HPV-related squamous cell carcinoma variants that will be addressed here are: basaloid squamous cell carcinoma (BSCC), undifferentiated carcinoma (UCa), papillary squamous carcinoma (PSCC) and small cell carcinoma. Some studies have suggested favorable prognosis in some variants, analogous to that of the (NKSCC), while others showed poorer outcome. So far the number of studies on this subject is limited and the number of cases evaluated in each investigation is few. Because of that, it is prudent at this stage, not to alter management protocols as a result of identification of HPV in these variants and to await additional information

Cirurgia de hartmann; estudo de 24 casos.

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departamento de Clínica Cirúrgica, Curso de Medicina, Florianópolis, 199