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Stan i perspektywy konserwacji drewna zabytkowego

100%

Ważny J.

nr 2

79-83

The technical state of wooden monuments in Poland deteriorates at a terrifying tempo. Lack of conservation is the reason why relics suffer from a high moisture content w hich is followed by a whole complex of agencies — both biotic and abiotic. The participation of bacteria, moulds, soft rot fungi, lichen and algae is growing among factors which produce the degradation of wood. In this situation, the choice of wood preservatives should take into consideration the reaction of those organisms. At the threshold of the twenty first century we are faced with the problem of a selection of chemical protective measures and the elimination of ones regarded by the health authorities as harmful for the environment. The role of stabilizing and hardening chemicals, other than biocides, as well as non-chemical methods of protection is rapidly growing.

40 lat w służbie ochrony zabytkowego drewna

75%

Ważny J.

nr 4

301-302

Badanie skuteczności fungicydów przeciwko grzybom powodującym degradację papieru : część I : przegląd metodyki

63%

Rudniewski P. , Ważny J.

1997

nr 3

294-299

The use of chemical agents against microorganisms causing damage to the paper of historical objects requires tests of their effectiveness. The evaluation of such effectiveness attaches essential importance to the selection of methods and the employment of objective criteria for the assessment of the outcome of studies. The authors conducted the review of methods used in examining the value of fungicides both on a natural base and in the case of artificial culture.

Profesor Franciszek Krzysik (1902-1980)

63%

Czajnik M. , Ważny J.

nr 3-4

215

Instrumentalna metoda oznaczania skuteczności środków ochrony drewna przed pleśnieniem

51%

Ważny J. , Krajewski K. J. , Rudniewski P. , Ważny T.

nr 4

260-269

The conducted research concerned the preparation of an instrumental method for the measurement of the fungitoxic value of wood preservatives against mould which could replace the heretofore applied subjective visual method. The measurement of light reflection with Zeiss photometres (Leukometers) and Zeiss Spekol 10 spectrometers with the Rd/0 reflectance adapter was treated as a new criterion of effectiveness. The method was tested on two fungicides: natrium pentochlorophenate and the WR-3 quoternary ammonium compound, used on samples of pine and birch wood. The results obtained with the method were better than those in the case of the visual method, albeit proved to be more time consuming. The proposed method appears to be useful for the elimination of subjective difficulties in the estimation of mould growth on the surface of the given wood, and hence for the estimation of the effectiveness of wood preservatives.