Wyniki wyszukiwania - BazTech

1

Sodium hyaluronate/ graphene oxide hydrogels for cartilage tissue engineering

Hunger M., Domalik-Pyzik P., Chłopek J.

Engineering of Biomaterials

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2018

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Vol. 21, no. 148

88

2

Preparation of composite filaments and 3D prints based on PLA modified with carbon materials with the potential applications in tissue engineering

Hunger M., Podgórny W., Frączek-Szczypta A.

Engineering of Biomaterials

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2018

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Vol. 21, no. 147

7--15

EN

This paper discusses the possibilities of obtaining polylactide-based composites and nanocomposites modified with carbon materials using the extrusion method, as well as the potential of their application in 3D printing technology. The aim of this research is to determine the impact of the presence of carbon additives on the properties of composites: mechanical, thermal and chemical. For this purpose, several research techniques were used such as scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), DSC/TG analysis, infrared Fourier-transform infrared spectroscopy (FTIR) and mechanical tests. It has been shown that it is possible to effectively produce composite materials based on PLA and carbon modifiers after optimization of the extrusion and printing process. Special attention should be paid to the quality of carbon phases homogenization in PLA matrix because the inappropriate dispersion may have a negative effect on the final properties of the composite, especially those modified with nanomaterials. Moreover, the reinforcing effect of carbon phases can be observed, and the quality of obtained filament with carbon fiber after recycling does not differ significantly from the quality of commercially available filaments. The obtained filament was successfully used to print three-dimensional scaffolds. Therefore, both the use of materials which are biodegradable and biocompatible with human tissue and the 3D printing method have the potential to be applied in tissue engineering.

3

Application of polymer- and graphene- based materials in biomedical research

Sekuła M., Domalik-Pyzik P., Noga S., Karnas E., Kosowska K., Hunger M., Złocista-Szewczyk N., Jagiełło J., Lipińska L., Pielichowska K., Chłopek J., Zuba-Surma E.

Engineering of Biomaterials

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2018

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Vol. 21, no. 148

66

4

New self-checking booth multipliers

Hunger M., Marienfeld D.

International Journal of Applied Mathematics and Computer Science

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2008

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Vol. 18, no 3

319-328

EN

This work presents the first self-checking Booth-3 multiplier and a new self-checking Booth-2 multiplier using parity prediction. We propose a method which combines error-detection of Booth-3 (or Booth-2) decoder cells and parity prediction. Additionally, code disjointness is ensured by reusing logic for partial product generation. Parity prediction is applied to a carry-save-adder with the standard sign-bit extension. In this adder almost all cells have odd fanouts and faults are detected by the parity. Only one adder cell has an even fanout in the case of Booth-3 multiplication. Especially, for even-number Booth-2 multipliers parity prediction becomes efficient. Since that prediction slightly differs from previous work which describes CSA-folded adders, formulas to predict the parity are developed here. The proposed multipliers are compared experimentally with existing solutions. Only 102% of the area of Booth-2 without error detection is needed for the self-checking Booth-3 multiplier.