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Relationship between Person-Organization fit and objective and subjective health status (Person-Organization fit and health)

100%

Merecz D. , Andysz A.

International Journal of Occupational Medicine and Environmental Health

2012

tom 25

nr 2

166-177

Objectve: Person-Environment fit (P-E fit) paradigm, seems to be especially useful in explaining phenomena related to work attitudes and occupational health. The study explores the relationship between a specific facet of P-E fit as Person-Organization fit (P-O fit) and health. Materials and Methods: Research was conducted on the random sample of 600 employees. Person-Organization Fit Questionnaire was used to asses the level of Person-Organization fit; mental health status was measured by General Health Questionnaire (GHQ-28); and items from Work Ability Index allowed for evaluation of somatic health. Data was analyzed using non parametric statistical tests. The predictive value of P-O fit for various aspects of health was checked by means of linear regression models. Results: A comparison between the groups distinguished on the basis of their somatic and mental health indicators showed significant differences in the level of overall P-O fit (χ² = 23.178; p < 0.001) and its subdimensions: for complementary fit (χ² = 29.272; p < 0.001), supplementary fit (χ² = 23.059; p < 0.001), and identification with organization (χ² = 8.688; p = 0.034). From the perspective of mental health, supplementary P-O fit seems to be important for men’s well-being and explains almost 9% of variance in GHQ-28 scores, while in women, complementary fit (5% explained variance in women’s GHQ score) and identification with organization (1% explained variance in GHQ score) are significant predictors of mental well-being. Interestingly, better supplementary and complementary fit are related to better mental health, but stronger identification with organization in women produces adverse effect on their mental health. Conclusions: The results show that obtaining the optimal level of P-O fit can be beneficial not only for the organization (e.g. lower turnover, better work effectiveness and commitment), but also for the employees themselves. Optimal level of P-O fit can be considered as a factor maintaining workers’ health. However, prospective research is needed to confirm the results obtained in this exploratory study.

Możliwości otrzymywania niskoemisyjnego klinkieru wollastonitowego oraz właściwości otrzymanych spoiw cementowych

51%

Polniaszek I. , Winnefeld F. , Pichniarczyk P. , Ostrowski M.

Cement Wapno Beton

2024

tom R. 29, nr 3

160--170

Celem przeprowadzonych badań była synteza klinkieru wollastonitowego jako potencjalnego składnika głównego cementu. Klinkier wollastonitowy został wypalony w półprzemysłowym piecu obrotowym o wydajności ok. 50 kg/h w temperaturze 1240°C z wykorzystaniem surowców wtórnych. W zsyntezowanym klinkierze dominowały fazy rankinitu oraz pseudowollastonitu. Obie fazy są podatne na karbonatyzację. Wypalony klinkier poddano procesowi karbonatyzacji bezpośredniej. Produkty tego procesu obejmowały węglan wapnia w różnych formach polimorficznych, a także fazę amorficzną, głównie krzemionkę. Amorficzna krzemionka reaguje jako pucolana w mieszankach z cementem portlandzkim. Zastosowanie klinkieru wollastonitowego prowadzi do obniżenia emisji CO2 w porównaniu do klinkieru portlandzkiego, co wynika z mniejszego zużycia surowca węglanowego, niższej temperatury syntezy oraz możliwości sekwestracji CO2.

The aim of the investigation was to synthesise clinker based on wollastonite and carbonate it afterwards to be used as a potential new supplementary cementitious material. The clinker was burned in a semi-industrial rotary kiln with a capacity of approx. 50 kg/h at 1240°C using secondary raw materials. The synthesised clinker was composed mainly of rankinite and pseudowollastonite, which are carbonatable. The burned clinker was treated by direct carbonation in a wet process. The carbonation products included calcium carbonate in various polymorphic forms, as well as an amorphous phase, mainly amorphous silica. The latter can react as a pozzolan in blends with Portland cements. The use of the carbonated clinker as supplementary cementitious material can lead to lower CO2 emissions compared to plain Portland cement, due to the lower consumption of carbonate-containing raw material, the lower synthesis temperature and the possibility of CO2 sequestration.