| 1. |
- Anna, Malm, 1978, et al.
(författare)
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Production start-up phase - A comparison between New Product Development and Production Relocation
- 2012
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Ingår i: Proceedings of the 5th International Swedish Production Symposium. - 9789175197524 ; , s. 593-598
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Konferensbidrag (refereegranskat)abstract
- New product development in a globalized industrial environment with a constant increasing competition, challenges the ways to perform production start-up and production relocation. A product development process focuses in general on product function and to avoid product quality problems. A production relocation focus also on avoiding product quality problems, but relocation is mostly related to forgotten or misunderstood information. The challenging situation due to a more global market is the increasing need for production relocation. In this paper, a literature review is performed investigating these three areas and relate them with industrial experience from production relocations. To summaries, the existing processes in industry today seem to be based on processes for product development. The results view that effectiveness in production relocation are dependent on technology and knowledge transfer and the production start-up process.
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| 2. |
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| 3. |
- Karlkvist, Tommy, et al.
(författare)
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Molecular recognition in mineral flotation : Selectivity in apatite-calcite system
- 2014
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Ingår i: 27th International Mineral Processing Congress, IMPC 2014, Santiago, Chile, 20-24 October 2014.
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Konferensbidrag (refereegranskat)abstract
- The present investigation aims to develop and distinguish mineral specific reagents with two functional groups for use in flotation of calcium containing minerals. For this purpose, a series of dicarboxylate-based surfactants with varying length between the carboxylate groups (one, two or three methylene groups) were synthesized. As reference, a surfactant with the same alkyl chain length but with only one carboxylate group in the polar part was synthesized. The adsorption behavior of these new reagents on pure apatite and calcite mineral surfaces was studied using Hallimond tube flotation, FTIR and ζ potential measurements. The relation between the adsorption behavior of a given surfactant on a specific mineral surface and its molecular structure over a range of concentration and pH values, as well as the region of maximum recovery were established. It was found that one of the reagents, with a specific distance between the carboxylate groups, was much more selective for a particular mineral surface than the other homologues synthesized. This selective adsorption of a given surfactant to a particular mineral surface relative to other mineral surfaces as evidenced in flotation studies is substantiated by ζ potential and infra-red spectroscopy data.
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| 4. |
- Malm, Anna, 1979-, et al.
(författare)
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Production Start-up Phase : A Comparison between New Product Development and Production Relocation
- 2012
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- A challenging situation due to a more global market is the increasing need for production relocation. New product development with constant increasing competition challenges the ways to perform production start-up and production relocation. Product development processes focus in general on function of the product and to avoid product quality problems. Production relocation processes also focus on avoiding product quality problems, but problems that occur within production relocation are mostly related to forgotten or misunderstood information. In this paper, a literature review is performed investigating these three areas and relate them to industrial experience. Existing relocation processes are often based on processes for product development. There are several similarities between the production start-up in product development and product relocation since the same result is requested. However, the way to achieve the results can differ within the literature, within the paper are the differences and similarities discussed.
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| 5. |
- Patra, Anuttam, et al.
(författare)
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Design and development of novel mineral-specific collectors for flotation
- 2014
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Ingår i: 27th International Mineral Processing Congress, IMPC 2014, Santiago, Chile, 20-24 October 2014.
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Konferensbidrag (refereegranskat)abstract
- Almost all of the flotation reagents used today were discovered by continued application of empirical methods and/or trial and error experimentation. Moreover, with the metal-ion specific approach used so far, it is difficult to separate the minerals containing the same constituent metal ion. A critical assessment of molecular recognition processes involved in biomineralization suggested the possibility of using reagents which are surface specific. The concept that the molecules consisting of two or more functional groups having appropriate spacing between those so as to achieve structural/stereochemical compatibility during interaction with the mineral surface exhibit structure-specificity is thought to be extended to the design of specific collectors in flotation processes. In the present study, for the first time, a rational design of surface active molecules, and thereby the recognition of crystal faces (of minerals) by these molecules through structural and stereochemical matching is being utilized successfully to selectively float various minerals. For this purpose, carboxylate-based collectors (for mineral specific flotation of calcium minerals) as well as xanthate-based collectors (for mineral specific flotation of sulphide minerals) with a fixed alkyl chain length but having two functional groups with varying geometrical distances (separated by a spacer of one, two and three carbon atoms) between them have been synthesized. In this article, we have discussed the design, synthesis, purification of these novel mineral specific collectors as well as their important solution parameters in relation to flotation processes.
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| 6. |
- Amani, Pegah, 1983, et al.
(författare)
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Food product clustering for customized food logistics
- 2013
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Ingår i: 7th International European Forum (Igls-Forum) - (136th EAAE Seminar) on System Dynamics and Innovation in Food Networks , Innsbruck-Igls, Austria.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Andershed, Henrik, 1975-, et al.
(författare)
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Initial test of the new risk-need assessment instrument for youths with or at risk for conduct problems : ESTER-assessment
- 2010
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Ingår i: Procedia - Social and Behavioral Sciences. - : Elsevier BV. - 1877-0428. ; 5, s. 488-492
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Tidskriftsartikel (refereegranskat)abstract
- ESTER-assessment is a new assessment instrument for youths (0-18 years), and includes 19 empirically-derived risk and protective factors for conduct problems. This study tests the inter-rater reliability of the five-point rating scale used to assess the 19 factors in ESTER-assessment on 30 institutionalized girls and their file information. Exact agreement between raters varied from 38 to 72 percent on the 19 individual factors, a result much better than chance. Intra-class correlations of the two independent raters on the majority of the 19 individual factors were fair to good. In conclusion, the results lend support to the inter-rater reliability of ESTER-assessment.
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| 8. |
- Andersson-Engels, Stefan, et al.
(författare)
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In vivo luminescence imaging and tomography using upconverting nanoparticles as contrast agents
- 2012
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Ingår i: 2012 Asia Communications and Photonics Conference. - 2162-108X. ; , s. 2-3
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Konferensbidrag (refereegranskat)abstract
- Upconverting nanoparticles have recently drawn increasingly attention as contrast agents for optical bioimaging. They enable autofluorescence-free imaging within the tissue optical window, and improved spatial resolution as compared to conventional fluorescence-based contrast agents. (C) 2012 Optical Society of America
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| 9. |
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| 10. |
- Develet, Jean-Adrien, et al.
(författare)
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Evaluation of the Biofidelity of the BioRID-II and THOR-NT Anthropomorphic Test Devices under Seatbelt Pre-Pretensioner Loading in Stationary Conditions
- 2013
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Ingår i: 2013 Ohio State University Injury Biomechanics Symposium. ; , s. 1-15
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Pre-pretensioners are active and reversible devices that apply light tension to the seatbelt (less than 300N) which pulls road vehicle occupants rearwards and reduce the backset (head-to-head restraint horizontal distance). This action has been found to have the potential to reduce the number of whiplash injuries in rear impacts. However, pre-pretensioners induced a new load case on current Anthropomorphic Test Devices (ATDs) for which they have not been validated. The purpose of this study was to evaluate the biofidelity of two 50th percentile male ATDs (BioRID-II and THOR-NT), under pre-pretensioner loading in a stationary environment. A literature review resulted in three testing positions that either occur frequently (backset exceeding recommendations) or have high injury potential (leaning far forward at the driver and front passenger seats). Experiments comprised six volunteer subjects, the BioRID-II and the THOR-NT. Corridors for the head-neck complex kinematics, and interaction of the subjects with the seatbelt, were generated based on data from the volunteer tests and ATD responses were compared to the corridors in terms of amplitude, peak occurrence and shape. For slight out-of-position cases (backset ~80mm), the THOR-NT was found to be close to relaxed volunteers and the BioRID-II to tense volunteers; both were suitable for pre-pretensioner testing. Although the BioRID-II results were closer to the corridors than the THOR-NT results in the far forward leaning positions, neither showed sufficiently large rearward motions and head rotations to fit the corridors. Furthermore, head rotations were problematic for both ATDs in the three test positions. Therefore, construction changes to both the pelvis and occipital joints are suggested in order to improve the biofidelity of BioRID-II and THOR-NT in far forward leaning positions.
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