Guilherme Assis | Universidade Estadual de Maringa (original) (raw)
Papers by Guilherme Assis
Biocompatibilidade do cimento de fosfato de cálcio implantado no rádio de coelhos
Acta Cirurgica Brasileira, 2004
PURPOSE: The objective of this paper was to evaluate the biocompatibility of calcium phosphate ce... more PURPOSE: The objective of this paper was to evaluate the biocompatibility of calcium phosphate cement in radius of rabbits. METHODS: For this experiment, calcium phosphate were implanted in the radius of 16 rabbits, divided in two groups (GI and GII), according to postoperative follow-up of 12 and 26 weeks, respectively. Reactions of these biomaterials on animal bone tissue were observed. X-ray, optical densitometry, optical microscopy and scanning electron microscopy analyses were performed. RESULTS: It was observed that calcium phosphate cement were partially resorbed during the 26-week follow-up, showing biocompatibility, with absence of inflammatory or other undesirable reactions due to the implants. CONCLUSIONS: Calcium phosphate-based cements did not cause inflammatory reactions when in contact with the osseous tissue, and were therefore biocompatible. Follow-up periods longer than 26 weeks are necessary to better evaluate the behavior of calcium phosphate-based cement.
The CMS Collaboration
Nuclear Physics A, 2009
Bragantia, 1991
This paper presents the behaviour of three wheat cultivara (CNT 8, IAC 17 and BH-1146) at eight s... more This paper presents the behaviour of three wheat cultivara (CNT 8, IAC 17 and BH-1146) at eight seeding times (the first seeding time was from 1st to 10th of March and the last one from to 20th to 30th of May) in experiments carried out at Canadá Farm, Assis, State of Sáo Paulo, Brazil, in the period 1978-1982. Grain yield and plant heigth were evaluated for each seeding time, in each experiment. Soil water availability was obtained by water balances taken at each ten days considering 125mm as the soil water retention capacity. The results showed that the seeding time from 20th of March to 10th of April was the best considering grain yield, independently of the cultivar. The results also indicated that the others studied seeding times were not favourable to seed wheat in this region. The wheat cultivar CNT 8 was the most productive, independently of the year and the seeding time. Considering the years under study it was observed that in 1979, the three evaluated cultivars exhibited the highest grain yield due meanly to the climatic conditions which was favourable to the crop.
DENSIFICAÇÃO E EVOLUÇÃO MICROESTRUTURAL DE PASTILHAS OBTIDAS DE PÓS DE UO2 FRESCO E ESTOCADO OBTIDOS VIA TCAU
DENSIFICAÇÃO E EVOLUÇÃO MICROESTRUTURAL DE PASTILHAS OBTIDAS DE PÓS DE UO2 FRESCO E ESTOCADO OBTIDOS VIA TCAU
DENSIFICAÇÃO E EVOLUÇÃO MICROESTRUTURAL DE PASTILHAS OBTIDAS DE PÓS DE UO2 FRESCO E ESTOCADO OBTIDOS VIA TCAU
Biocompatibilidade do cimento de fosfato de cálcio implantado no rádio de coelhos
Acta Cirurgica Brasileira, 2004
PURPOSE: The objective of this paper was to evaluate the biocompatibility of calcium phosphate ce... more PURPOSE: The objective of this paper was to evaluate the biocompatibility of calcium phosphate cement in radius of rabbits. METHODS: For this experiment, calcium phosphate were implanted in the radius of 16 rabbits, divided in two groups (GI and GII), according to postoperative follow-up of 12 and 26 weeks, respectively. Reactions of these biomaterials on animal bone tissue were observed. X-ray, optical densitometry, optical microscopy and scanning electron microscopy analyses were performed. RESULTS: It was observed that calcium phosphate cement were partially resorbed during the 26-week follow-up, showing biocompatibility, with absence of inflammatory or other undesirable reactions due to the implants. CONCLUSIONS: Calcium phosphate-based cements did not cause inflammatory reactions when in contact with the osseous tissue, and were therefore biocompatible. Follow-up periods longer than 26 weeks are necessary to better evaluate the behavior of calcium phosphate-based cement.
The CMS Collaboration
Nuclear Physics A, 2009
Bragantia, 1991
This paper presents the behaviour of three wheat cultivara (CNT 8, IAC 17 and BH-1146) at eight s... more This paper presents the behaviour of three wheat cultivara (CNT 8, IAC 17 and BH-1146) at eight seeding times (the first seeding time was from 1st to 10th of March and the last one from to 20th to 30th of May) in experiments carried out at Canadá Farm, Assis, State of Sáo Paulo, Brazil, in the period 1978-1982. Grain yield and plant heigth were evaluated for each seeding time, in each experiment. Soil water availability was obtained by water balances taken at each ten days considering 125mm as the soil water retention capacity. The results showed that the seeding time from 20th of March to 10th of April was the best considering grain yield, independently of the cultivar. The results also indicated that the others studied seeding times were not favourable to seed wheat in this region. The wheat cultivar CNT 8 was the most productive, independently of the year and the seeding time. Considering the years under study it was observed that in 1979, the three evaluated cultivars exhibited the highest grain yield due meanly to the climatic conditions which was favourable to the crop.
DENSIFICAÇÃO E EVOLUÇÃO MICROESTRUTURAL DE PASTILHAS OBTIDAS DE PÓS DE UO2 FRESCO E ESTOCADO OBTIDOS VIA TCAU
DENSIFICAÇÃO E EVOLUÇÃO MICROESTRUTURAL DE PASTILHAS OBTIDAS DE PÓS DE UO2 FRESCO E ESTOCADO OBTIDOS VIA TCAU
DENSIFICAÇÃO E EVOLUÇÃO MICROESTRUTURAL DE PASTILHAS OBTIDAS DE PÓS DE UO2 FRESCO E ESTOCADO OBTIDOS VIA TCAU