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All Journal JOURNAL OF SCIENCE AND APPLIED ENGINEERING Asy-Syariah
Totok Sugiarto
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Utilization of Palm Fiber King as a Strengthening Material on Biocomposite Gerald A Pohan; Totok Sugiarto; Dwi Cahyo Galih Arianto
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 1, No 1 (2018): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.422 KB) | DOI: 10.31328/jsae.v1i1.552

Abstract

Royal palm (Roystonea regia) is still utilized in traditional way. In this study, royal palm fiber is employed as a reinforcing material in composites. The fiber is divided into two groups of fibers, which are continuous and discontinuous, with a length of fibers of 20 and 5 cm, respectively. Continuous fibers are arranged in parallel, while discontinuous fibers are sown in random orientation. The variations in fiber volume fraction were 15, 25, 50, and 75%. Tensile tests were performed to determine composite strength. The test results show that composite tensile strength values with continuous fibers are higher than those of discontinuous fibers. In addition, the increase in fiber volume fraction is directly proportional to the tensile strength of the specimen. These results indicate that the royal palm fiber has the potential to be used in composite applications.Keywords: royal palm fiber, biocomposite, tensile strength
UTILIZATION OF CORK COCOPEAT AS A COMPOSITE SILENCER Eko Yohanes Setyawan; Totok Sugiarto; Soeparno Djiwo
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 1, No 1 (2018): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.111 KB) | DOI: 10.31328/jsae.v1i1.555

Abstract

Noise is unwanted sound of activity in a particular time and levels that can cause health problems and environmental comfort. Sound or sound is heard as the stimulation on the auditory nerve cells in the ear by a wave of longitudional caused the vibration of the sound or sound source and the waves propagate through the medium of air or any other conductor. Threshold noise received by normal human beings that is 85 dB, when the normal threshold above can lead to damage to the auditory system when not using protective tools in conducting activities. The noise can be avoided by way of designing construction work. In addition noise can be minimised with soundproofing materials. During this suppressor used i.e. from rubber, plastic and metal, but the materials used nowadays are not yet are biodegradable. Therefore, to minimize noise with materials that are biodegradable with composite materials. One effort in selecting materials that are biodegradable with coconut plant utilization have been known by the wider community wastes a lot of cocopeat i.e. we encounter in a craftsmen coir because its existence is underutilized by craftsmen. Natural fibers are biodegradable they have opportunities to be developed further into a composite reinforcement materials that have high performance as an alternative replacement of artificial fiber materials based compounds, hydrocarbons or metal.Methods used i.e. experimental methods, with chemical treatment of cocopeat aims to separate dirt and the lignin contained in the cocopeat so cocopeat can bind matrix that would have a high performance in the muffle the sound so that it can reduce noise. After treatment with alkali, creating a noise test specimens in accordance with the design of the mold. Then the noise testing was performed using a sound pressure level to know the ability of mute and SEM photographs to find causal in a composite able to absorb sound.The results showed, the percentage composition of the powder of coconut fibres (cocopeat) have an influence in absorbing sound. In this study the composition of the powder of coconut fibres (cocopeat) 60% has a high sound absorbency. Desible votes after going through the composite powder coconut fibres 60% has a value of 102.73 db at a distance of 50 cm, 100 db at a distance of 91.57 cm and 80.23 db at a distance of 150 cm. And sound absorbency coefficient on the composition of the powder of coconut fibres 60% has a value of 0.144 on a distance of 50 cm, 100 cm at a distance of 0.237 and 0.331 approximately 150 cm. Whereas in terms of surface morphology of SEM photo of that on the composition of the powder 60% coconut fibers have more porosity percentage which has absorption ability voice more effectively so that the sound after passing the composition of composite lower. Keywords: noise, Biodegradable Composite, cocopeat, SEM.
Kebijakan Formulasi Hukum Pidana Mati Terhadap Pelaku Tindak Pidana Korupsi Di Indonesia Totok Sugiarto
Asy-Syari’ah : Jurnal Hukum Islam Vol. 9 No. 2 (2023): Asy-Syari'ah: Jurnal Hukum Islam, Juni 2023
Publisher : LP3M Universitas Islam Zainul Hasan Genggong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55210/assyariah.v9i2.968

Abstract

This research is motivated by high corruption cases in Indonesia. In fact, in Indonesia, corruption cases have been threatened with death penalty as stipulated in Law no. 20 of 2001 on Amendment to Law Number 31 Year 1999 concerning the Eradication of Corruption. But the problems that exist in the current conditions, some Indonesian people who reject the death penalty and fight for the abolition of capital punishment in the punishment system in Indonesia, on the grounds of questioning the effectiveness of the implementation of the Act, to provide a deterrent effect and efforts to eradicate the perpetrators of action criminal corruption. The blade analysis in this research is the theory of law enforcement system and the theory of punishment. This research uses normative juridical method with data collection method of literature study. The results of this study indicate that the formulation policy of capital punishment law against perpetrators of corruption in Indonesia currently still leaves difficulties where there is still a lot of rejection of the policy but in determining the standard of punishment for convicted corruption good "good" is still considered to have no deterrent effect for the culprit. The implementation of the formulation policy of capital punishment law against corruption perpetrators in Indonesia is also in accordance with several law enforcement policies in several countries such as China, Iran, Pakistan, Saudi Arabia, United States Iraq, Somalia, Egypt, Chad, Yemen, Taiwan , South Sudan, Bangladesh, Singapore, Japan, Sudan, Jordan, Oman, Afghanistan, India UAE, Malaysia, North Korea and Vietnam. Seeing some of the implemented policies has been commonly implemented in some countries and although now the policy still raises debate over the punishment that does not eliminate the prison of convicted perpetrators through the death penalty, then to overcome the problems can be formulated policy formulation of capital punishment law against perpetrators of corruption in Indonesia in the future by making some exceptions. Keywords: policy, criminal law, corruption, death penalty
Co-Authors Dwi Cahyo Galih Arianto Eko Yohanes Setyawan Gerald A Pohan Soeparno Djiwo