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Your search keyword '"Cahyadi, Muhamad"' showing total 5 results
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5 results on '"Cahyadi, Muhamad"'

2. Ethanolic extract of Etlingera elatior flower exhibits anthelmintic properties to Fasciola gigantica in vitro.

Author

Wulandari, Aisyah Retno, Nurlaelasari, Andini, Nugroho, Herjuno Ari, Cahyadi, Muhamad, Kurniawan, Wahyu, and Hamid, Penny Humaidah

Subjects
FLOWER shows, FASCIOLA, PARASITIC diseases, FASCIOLIASIS, EGGS, OVUM
Abstract

Background: Fasciolosis is a parasitic disease affecting the hepatobiliary system of livestock worldwide. The control of the fluke is important to be performed in endemic regions. Aim: This study aims to evaluate the effect of Etlingera elatior ethanolic extract on egg and adult stadia of Fasciola gigantica. Methods: Fasciola gigantica in different stages were incubated with E. elatior ethanolic extract in different concentrations and time points. Results: The number of developed eggs with different concentrations of 1.25%, 2.5%, and 5% was significantly decreased by 36.67%, 56.67%, and 56.67% on day 11 post-incubation, which showed an ovicidal effect of the herb. The developed eggs on day 14, which were represented by hatched larvae, were also decreased by 70%, 50%, and 13.33%, respectively. Significant flukicidal effects were observed in the incubation time of 80 minutes for the concentration of 20% (p = 0.007) and 640 minutes for 10% concentration (p = 0.003). Surface microscopy of adult F. gigantica showed damaged skin and spina with the erosion of the inner membrane and detached syncytium from the tegument. Conclusion: Overall, the results indicate that E. elatior has a promising anthelmintic property against F. gigantica in both ova and adult stages. [ABSTRACT FROM AUTHOR]

Published
2023
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4. The hardness and micro structure analysis of SS316l material after post weld heat treatment.

Author

Cahyadi, Muhamad, Maryanto, Arip, Nasrun, Mohamad, Aranda, Irwan, and Adin

Subjects
*HEAT treatment, *MATERIALS analysis, *MILD steel, *MATERIALS testing, *WELDING
Abstract

This study aims to determine the difference in the strength of SS316L metal with Rockwell hardness testing equipment after going through the welding process and Post Weld Heat Treatment. To find out the difference in the hardness of SS316L metal after the welding process and Post Heat Treatment, this experiment was carried out with several stages of testing. The material tested is SS316L in the form of a plate, so natural cooling is carried out to normal temperature. After cooling is complete, the Rockwell hardness test is carried out with three stages of the test method, namely HAZ, Welding and the Mother Metal at each temperature variation. Based on the hardness data obtained from the three highest PWHT temperature variations at the haz point with a value of 34 HRC at a temperature variation of 400° C, at the welding point with a value of 47.5 HRC at a temperature variation of 400° C and the parent metal at a temperature variation of 500° C. with a hardness value of 20.6 HRC, while the lowest hardness value for haz, weld and base metal is at a temperature variation of 300° C. The structure of low carbon steel is dominated by ferrite and a little bit of perlite. The addition of alloying elements is usually carried out in welding low carbon steel, the addition of these elements can increase the strength of the steel without reducing its ductility. Low carbon steel plate can be welded by all welding methods and the result will be good if the preparation is perfect and the requirements are met. [ABSTRACT FROM AUTHOR]

Published
2022
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