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Lönnroth, Emma-Christin
Publications (10 of 40) Show all publications
Helali, F., Lönnroth, E.-C. & Shahnavaz, H. (2008). Participatory ergonomics intervention in an industrially developing country: a case study (ed.). Paper presented at . International Journal of Occupational Safety and Ergonomics, 14(2), 159-176
Open this publication in new window or tab >>Participatory ergonomics intervention in an industrially developing country: a case study
2008 (English)In: International Journal of Occupational Safety and Ergonomics, ISSN 1080-3548, E-ISSN 2376-9130, Vol. 14, no 2, p. 159-176Article in journal (Refereed) Published
Abstract [en]

In industrially developing countries, a few ergonomists have directed great efforts towards developing ergonomics awareness among managers and workers in organizations. There is little research on the degree of their success, though. Furthermore, access of organizations to ergonomics knowledge is usually very difficult, especially in industrially developing countries. Thus, building ergonomics awareness is certainly the first phase of the process. Three companies from one industry (44 people: 14 females and 30 males) participated in a project aimed at improving their work system. At the beginning, we needed to create a common goal and ensure participation with appropriate ergonomics tools. The findings of this study were the key issue for the ergonomics intervention (i.e., a shared vision, awakened need of change and learning). Further, to build ergonomics awareness and develop a continuous learning process in the company, it was necessary to use more ergonomics tools through workers' participation in different workplaces

National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-6682 (URN)4f132ba0-dbcc-11dc-b464-000ea68e967b (Local ID)4f132ba0-dbcc-11dc-b464-000ea68e967b (Archive number)4f132ba0-dbcc-11dc-b464-000ea68e967b (OAI)
Note
Validerad; 2008; 20080215 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-06-12Bibliographically approved
Lönnroth, E.-C. (2006). Experiences of an online course in ergonomics (ed.). In: (Ed.), INDAC: . Paper presented at INDAC : 10/12/2006 - 11/12/2006.
Open this publication in new window or tab >>Experiences of an online course in ergonomics
2006 (English)In: INDAC, 2006Conference paper, Published paper (Other academic)
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-35788 (URN)a76831d0-ec1a-11db-88eb-000ea68e967b (Local ID)a76831d0-ec1a-11db-88eb-000ea68e967b (Archive number)a76831d0-ec1a-11db-88eb-000ea68e967b (OAI)
Conference
INDAC : 10/12/2006 - 11/12/2006
Note

Godkänd; 2006; 20070416 (kirhon)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-03-08Bibliographically approved
Lönnroth, E.-C. & Shahnavaz, H. (2005). Experience from an online course in ergonomics (ed.). In: (Ed.), (Ed.), ODAM VIII: Eighth International Symposium on Human Factors in Organizational Design : Maui, Hawaii, USA June 22-25 2005. Paper presented at International Symposiumon Human Factors in Organizational Design : 22/06/2005 - 25/06/2005.
Open this publication in new window or tab >>Experience from an online course in ergonomics
2005 (English)In: ODAM VIII: Eighth International Symposium on Human Factors in Organizational Design : Maui, Hawaii, USA June 22-25 2005, 2005Conference paper, Published paper (Other academic)
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-35937 (URN)aab953a0-554c-11dc-8e15-000ea68e967b (Local ID)aab953a0-554c-11dc-8e15-000ea68e967b (Archive number)aab953a0-554c-11dc-8e15-000ea68e967b (OAI)
Conference
International Symposiumon Human Factors in Organizational Design : 22/06/2005 - 25/06/2005
Note
Godkänd; 2005; 20070828 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Toro-Troconis, M., Lönnroth, E.-C. & Harford, I. (2005). Implementing learning design in the adult and community learning sector: a framework (ed.). In: (Ed.), ALT-C 2005: exploring the frontiers of e-learning - borders, outposts and migration : Manchester, Englandbetween 6 and 8 September 2005. Paper presented at ALT-C 2005 : 06/09/2005 - 08/09/2005. Association for Learning Technology
Open this publication in new window or tab >>Implementing learning design in the adult and community learning sector: a framework
2005 (English)In: ALT-C 2005: exploring the frontiers of e-learning - borders, outposts and migration : Manchester, Englandbetween 6 and 8 September 2005, Association for Learning Technology , 2005Conference paper, Published paper (Other academic)
Place, publisher, year, edition, pages
Association for Learning Technology, 2005
National Category
Production Engineering, Human Work Science and Ergonomics Production Engineering, Human Work Science and Ergonomics
Research subject
Gender and Technology; Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-29610 (URN)32293ae0-555b-11dc-8e15-000ea68e967b (Local ID)32293ae0-555b-11dc-8e15-000ea68e967b (Archive number)32293ae0-555b-11dc-8e15-000ea68e967b (OAI)
Conference
ALT-C 2005 : 06/09/2005 - 08/09/2005
Note

Godkänd; 2005; 20070828 (andbra)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Lönnroth, E.-C. (2005). Toxicity of medical glove materials: a pilot study (ed.). Paper presented at . International Journal of Occupational Safety and Ergonomics, 11(2), 131-139
Open this publication in new window or tab >>Toxicity of medical glove materials: a pilot study
2005 (English)In: International Journal of Occupational Safety and Ergonomics, ISSN 1080-3548, E-ISSN 2376-9130, Vol. 11, no 2, p. 131-139Article in journal (Refereed) Published
Abstract [en]

Cytotoxicity of 14 glove materials representing 4 natural rubber latex, 6 synthetic rubber and 4 synthetic polymeric materials was evaluated using dimethylthiazol diphenyltetrazolium (MTT), agar overlay and filter diffusion tests. Cell responses after contact with extracts of glove materials and contact with glove materials were assessed. One synthetic rubber glove (nitrile rubber) and 2 synthetic polymeric gloves (polyvinyl chloride)were non-toxic in all 3 tests, while 5 synthetic rubbers exhibited varying degrees of cytotoxicity, depending on the test. A severe cytotoxic response to both extracts of natural rubber latex materials and contact with natural rubber latex was verified in the 3 tests, indicating a need for consideration when selecting gloves, or other products, used in close skin contact.

National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-7736 (URN)626d68d0-709f-11db-962b-000ea68e967b (Local ID)626d68d0-709f-11db-962b-000ea68e967b (Archive number)626d68d0-709f-11db-962b-000ea68e967b (OAI)
Note
Validerad; 2005; 20061002 (kirhon)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Lönnroth, E.-C. (2004). E-learning (ed.). In: (Ed.), (Ed.), 5th Colombian ergonomics congress: Medellin 2004. Paper presented at Colombian ergonomic conference : 17/12/2004.
Open this publication in new window or tab >>E-learning
2004 (English)In: 5th Colombian ergonomics congress: Medellin 2004, 2004Conference paper, Published paper (Other academic)
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-32904 (URN)78e8f9a0-5549-11dc-8e15-000ea68e967b (Local ID)78e8f9a0-5549-11dc-8e15-000ea68e967b (Archive number)78e8f9a0-5549-11dc-8e15-000ea68e967b (OAI)
Conference
Colombian ergonomic conference : 17/12/2004
Note
Godkänd; 2004; 20070828 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Lönnroth, E.-C. & Dahl, J. (2003). Cytotoxicity of liquids and powders of chemically different dental materials evaluated using dimethylthiazol diphenyltetrazolium and neutral red tests (ed.). Paper presented at . Acta Odontologica Scandinavica, 61(1), 52-56
Open this publication in new window or tab >>Cytotoxicity of liquids and powders of chemically different dental materials evaluated using dimethylthiazol diphenyltetrazolium and neutral red tests
2003 (English)In: Acta Odontologica Scandinavica, ISSN 0001-6357, E-ISSN 1502-3850, Vol. 61, no 1, p. 52-56Article in journal (Refereed) Published
Abstract [en]

The purpose of this study was to assess and compare the cytotoxicity of liquid and powder components of chemically different dental materials using 2 basic unspecific cell culture methods. Three chemically cured glass ionomers (Fuji II, Lining cement, and Ketac Silver), 1 light-cured glass ionomer (Fuji II LC), and 2 chemically cured acrylates (Swedon and Super Bond) were tested. The liquids were diluted 1:10 in cell culture medium. The liquids from chemically cured acrylates were further diluted 1:100, 1:1000, and 1:10000. Extracts were made by incubating the powders in cell culture medium for 24 h at 37°C according to the ISO standard 10993-12. The cytotoxicity was assessed in transformed mouse fibroblasts (L-929) using two viability assays, dimethylthiazol diphenyltetrazolium (MTT) and neutral red (NR). Severe cytotoxicity was observed when testing powder extracts of Swedon, Fuji II, and Lining cement, whereas powder extracts of Ketac Silver, Fuji LC, and Super Bond induced slight to non-cytotoxicity. All of the 1:10 liquid dilutions were severely cytotoxic in the MTT assay. In the NR assay, however, four 10% dilutions were severely cytotoxic and 4 moderately cytotoxic. Further dilution of the liquids of the chemically cured acrylates reduced the toxicity, while the Super Bond catalyst was severely cytotoxic even as the 1:100 dilutions.

National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-6465 (URN)4b11e370-4cd9-11dc-ac5f-000ea68e967b (Local ID)4b11e370-4cd9-11dc-ac5f-000ea68e967b (Archive number)4b11e370-4cd9-11dc-ac5f-000ea68e967b (OAI)
Note
Validerad; 2003; 20070817 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Lönnroth, E.-C., Welendorf, H. & Ruyter, E. (2003). Permeability of different types of medical protective gloves to acrylic monomers (ed.). Paper presented at . European Journal of Oral Sciences, 111(5), 440-446
Open this publication in new window or tab >>Permeability of different types of medical protective gloves to acrylic monomers
2003 (English)In: European Journal of Oral Sciences, ISSN 0909-8836, E-ISSN 1600-0722, Vol. 111, no 5, p. 440-446Article in journal (Refereed) Published
Abstract [en]

Dental personnel and orthopedic surgeons are at risk when manually handling products containing methyl methacrylate (MMA). Dental products may also contain cross-linking agents such as ethylene glycol dimethacrylate (EGDMA) or 1,4-butanediol dimethacrylate (1,4-BDMA). Skin contact with monomers can cause hand eczema, and the protection given by gloves manufactured from different types of material is not well known. The aim of this study was to determine the breakthrough time (BTT, min) as a measure of protection (according to the EU standard EN-374-3) for a mixture consisting of MMA, EGDMA and 1,4-BDMA. Fifteen different gloves representing natural rubber latex material, synthetic rubber material (e.g. nitrile rubbers), and synthetic polymer material were tested. The smallest monomer MMA permeated within 3 min through all glove materials. A polyethylene examination glove provided the longest protection period to EGDMA and 1, 4-BDMA (> 120 min and 25.0 min), followed by the surgical glove Tactylon (6.0 min and 8.7 min) and the nitrile glove Nitra Touch (5.0 min and 8.7 min). This study showed that the breakthrough time (based on permeation rate) cannot be regarded as a ‘safe limit'. When the permeation rate is low, monomers may have permeated before BTT can be determined. Using double gloves with a synthetic rubber inner glove and a natural rubber outer glove provided longer protection when the inner glove was rinsed in water before placing the outer glove on top.

National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-6192 (URN)10.1034/j.1600-0722.2003.00064.x (DOI)000185369900014 ()2-s2.0-0345445916 (Scopus ID)4631aec0-2be1-11dd-8657-000ea68e967b (Local ID)4631aec0-2be1-11dd-8657-000ea68e967b (Archive number)4631aec0-2be1-11dd-8657-000ea68e967b (OAI)
Note
Validerad; 2003; 20080527 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Lönnroth, E.-C. & Ruyter, I. E. (2003). Resistance of medical gloves to permeation by methyl methacrylate (MMA), ethylene glocol dimethacrylate (EGDMA), and 1,4-butanediol dimethacrylate (1,4-BDMA) (ed.). Paper presented at . International Journal of Occupational Safety and Ergonomics, 9(3), 289-299
Open this publication in new window or tab >>Resistance of medical gloves to permeation by methyl methacrylate (MMA), ethylene glocol dimethacrylate (EGDMA), and 1,4-butanediol dimethacrylate (1,4-BDMA)
2003 (English)In: International Journal of Occupational Safety and Ergonomics, ISSN 1080-3548, E-ISSN 2376-9130, Vol. 9, no 3, p. 289-299Article in journal (Refereed) Published
Abstract [en]

Gloves afford hand protection by minimizing skin contact. The effectiveness of medical gloves to protect against permeation of the monomers, methyl methacrylate (MMA), ethylene glycol dimethacrylate (EGDMA), and 1,4-butanediol dimethacrylate (1,4-BDMA), was assessed focusing on permeation rates and degradation of glove materials caused by monomer contact. Fifteen different brands of gloves were tested using a European Standard procedure. Surface images of glove materials before and after exposure to the monomer mixture were obtained using a scanning electron microscope. The standard is not applicable as the only method for estimating the safety of gloves, but it is useful as guideline together with the cumulative permeation of acrylic monomers. Monomer contact on the outside resulted in substantial swelling of most glove materials, and structure changes of the inside surface.

National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-13727 (URN)d01cb6c0-4cd5-11dc-ac5f-000ea68e967b (Local ID)d01cb6c0-4cd5-11dc-ac5f-000ea68e967b (Archive number)d01cb6c0-4cd5-11dc-ac5f-000ea68e967b (OAI)
Note
Validerad; 2003; 20070817 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Lönnroth, E.-C. & Ruyter, I. E. (2002). Permeability of medical gloves to mono- and dimethacrylate monomers in dental restorative materials (ed.). Paper presented at . International Journal of Occupational Safety and Ergonomics, 8(4), 497-509
Open this publication in new window or tab >>Permeability of medical gloves to mono- and dimethacrylate monomers in dental restorative materials
2002 (English)In: International Journal of Occupational Safety and Ergonomics, ISSN 1080-3548, E-ISSN 2376-9130, Vol. 8, no 4, p. 497-509Article in journal (Refereed) Published
Abstract [en]

Dental personnel manually handle methacrylate-based restorative materials, which can cause skin irritation and allergies. The protection given by different types of medical gloves is not well known. Breakthrough time (BTT, min) was used as a measure of protection according to a European standard, using 2 test mixtures consisting of respectively 3 and 5 monomers. Fourteen gloves representing natural rubber latex, synthetic rubber, and synthetic polymeric material were tested. The BTT ranged from some minutes to more than 2 hrs for the 4 monomers with a molecular mass less than 300. The longest protection was recorded for Nitra Touch (nitrile rubber), Tactylon (synthetic rubber), and Metin (PVC).

National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
urn:nbn:se:ltu:diva-10393 (URN)932e0010-4cd6-11dc-ac5f-000ea68e967b (Local ID)932e0010-4cd6-11dc-ac5f-000ea68e967b (Archive number)932e0010-4cd6-11dc-ac5f-000ea68e967b (OAI)
Note
Validerad; 2002; 20070817 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
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