Monitoring the performance of innovative and traditional biocides mixed with consolidants and water-repellents for the prevention of biological growth on stone

2012 ◽  
Vol 423 ◽  
pp. 132-141 ◽  
Author(s):  
Daniela Pinna ◽  
Barbara Salvadori ◽  
Monica Galeotti
Keyword(s):  
Biological Growth ◽  
Water Repellents

scholarly journals Density, hardness and strength properties of densified fir and aspen woods pretreated with water repellents

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Hüseyin Pelit ◽  
Fatih Emiroglu
Keyword(s):  
Compression Ratio ◽  
Bending Strength ◽  
Linseed Oil ◽  
Vacuum Treatment ◽  
Strength Properties ◽  
Aspen Wood ◽  
Positive Effect ◽  
Water Repellents ◽  
Impregnated Wood ◽  
Compression Temperature

AbstractIn this study, the effect of thermo-mechanical densification on the density, hardness, compression strength, bending strength (MOR), and modulus of elasticity (MOE) of fir and aspen wood pretreated with water repellents was analyzed. Wood specimens were impregnated with paraffin, linseed oil and styrene after pre-vacuum treatment. Then, the impregnated wood specimens were densified with compression ratios of 20 and 40%, and at 120, 150 and 180 °C. The results indicated that the density, hardness and strength properties of the all densified specimens (untreated and impregnated) increased depending on the compression ratio and temperature. For all tested properties, higher increases were obtained in the paraffin and styrene pretreated specimens compared to untreated samples. However, the increase rates in linseed oil pretreated specimens were generally lower than untreated specimens. Regarding water repellents the most successful results in all tested properties were determined in styrene pretreated specimens. The density, hardness and strength properties of all specimens increased with the increase in compression ratio. On the other hand, the increase in the compression temperature negatively affects the properties of untreated and linseed oil pretreated specimens, while having a generally positive effect on the properties of paraffin pretreated specimens. However, all tested properties of styrene pretreated specimens have increased significantly due to the increase in compression temperature. The increasing strength properties of wood as a result of densification have increased much more with paraffin and especially styrene pretreatment. These combinations can be considered as an important potential for applications that require more hardness and strength.

scholarly journals Characterisation of biological growth curves of different varieties of an endangered native hen breed kept under free range conditions

2021 ◽  
Vol 20 (1) ◽  
pp. 806-813
Author(s):  
Antonio González Ariza ◽  
Sergio Nogales Baena ◽  
Teresa Marta Lupi ◽  
Ander Arando Arbulu ◽  
Francisco Javier Navas González ◽  
...  
Keyword(s):  
Growth Curves ◽  
Biological Growth ◽  
Free Range

A New Class of Fluoroalkyl Acrylate Oil-Water Repellents Based on Fluorinated Ketones

1965 ◽  
Vol 35 (2) ◽  
pp. 190-191 ◽  
Author(s):  
A.G. Pittman ◽  
D.L. Sharp
Keyword(s):  
New Class ◽  
Oil Water ◽  
Water Repellents

Growth of Japanese Fetuses -Analysis from the Viewpoint of Population and Biological Growth Curves-

1987 ◽  
Vol 29 (2) ◽  
pp. 229-232 ◽  
Author(s):  
Takako Yamada ◽  
Hiroshi Nishida ◽  
Kiyoko Yamaguchi ◽  
Shoichi Sakamoto ◽  
Masamichi Sakanoue
Keyword(s):  
Growth Curves ◽  
Biological Growth

scholarly journals Perceiving Biological Growth and Other Non-Rigid Transformations

2016 ◽  
Vol 16 (12) ◽  
pp. 949
Author(s):  
Filipp Schmidt ◽  
Roland Fleming
Keyword(s):  
Biological Growth ◽  
Rigid Transformations

Computer simulation of adaptive biological growth

1992 ◽  
Vol 25 (7) ◽  
pp. 780 ◽  
Author(s):  
C. Mattheck
Keyword(s):  
Computer Simulation ◽  
Biological Growth
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