Article Per Year (5 Year)
p-Index From 2021 - 2026
0.702
P-Index
This Author published in this journals
All Journal Indonesian Journal of Geography Jurnal Agricultural Biosystem Engineering
Muhammad Amin
Universitas Lampung
Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Materials Science & Nanotechnology

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Uji Kinerja Portable Rainfall Simulator pada Berbagai Tekanan Pompa Ridwan Ridwan; Oktafri Oktafri; Muhammad Amin; Maya Ardila
Jurnal Agricultural Biosystem Engineering Vol 1, No 3 (2022): September 2022
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rainfall simulator is a tool that allows you to create artificial rain simulation as you wish.  Rainfall simulator can be used to study runoff, erosion, infiltration, and other events in hydrological processes on a laboratory scale.  The purpose of the study was determine the performance of the portable rainfall simulator that had been made with test parameters, namely the discharge radiance value, nozzle constanta, and uniformity coefficient.  The test carried out using three variatons of pump pressure treatment, namelay 1.0, 1.3, and 1.6 bar and each treatment was repeated 3 times with a test time of 7.5 minutes.  The test result show that the portable rainfall simulator can produce water discharge with uniformity level (CU) greather than 70%.  The best pump pressure for the highest uniformity of transmission is 1.6 bar. The pumping pressure affects the water discharge with a uniformity coefficient value (CU), the greather the pump pressure, the greather the water discharge value, and the uniformity coefficient value (CU). The type of nozzle used is good enough to be used as a transmitter from the rainfall simulator that was made. Keywords: Coefficient Uniformity (CU), Discharge, Nozzle, Rain, Rainfall Simulator, Water.
Pengaruh Komposisi Campuran Serbuk Batang Singkong dan Serai Wangi terhadap Kualitas Obat Nyamuk Bakar Dahlia Dahlia; Sandi Asmara; Muhammad Amin; Sapto Kuncoro
Jurnal Agricultural Biosystem Engineering Vol 1, No 4 (2022): Desember 2022
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mosquito repellent are drugs used to repel or kill mosquitoes. Eco-friendly mosquito repellent or vegetable mosquito repellent can be made from various types of vegetable raw materials that contain mosquito-killer / repellent compounds such as cassava stem powder waste and citronella.  This cassava stem waste is very potential to be used because it is being one of the environmental problems in Indonesia. This research aims to establish the formation of mosquito repellent made from cassava stem powder and citronella, determine the suitability of quality based on the specifications of mosquito coils produced against SII No.1113-84 and organoleptic testing of mosquito coils. This research was conducted using a completely randomized design (CRD) with five treatments and three replications. The experiment consisted of 5 levels of mixed composition, namely 30% cassava stalks: 70% citronella (P1), 40% cassava stalks 60% lemongrass fragrant (P2), 50% cassava stalks: 50% citronella (P3), 60% cassava stalks.  40% citronella (P4), and 70% cassava stalks: 30% lemongrass (P5). The results showed that the mosquito repellent formed had a circle dimension of 81 cm, a diameter of 12 cm, a light brown color, a width of 7 mm, and a thickness of 4 mm. The quality of mosquito repellent based on the specifications is as follows: the moisture content range from 5.36 - 9.41% which fulfill the 80% quality standard, the burning time range from 3 - 4 hours, and the weight per seed range from 9.35 - 9, 77 grams. Judging from the quality based on these specifications, the mosquito repellent that is made does not fulfill the quality based on the specifications and quality requirements of SII. However, the mosquito repellent made is suitable for use as natural mosquito repellent because it is close to SII. Meanwhile, based on the organoleptic test with aroma parameters, the best natural mosquito repellent are treatment 1, formed by a mixture of 30% cassava stalks and 70% citronella.  Panelists gave an average score of 4.7 with the criteria being fragrant to very fragrant. Keywods: Cassava Stem Powder, Citronella Powder, Mosquito Repellent. 
Pengaruh Suhu Pengeringan dan Tingkat Ketebalan Irisan Wortel Terhadap Mutu Tepung Wortel Risya Delfira Cahyani Effendi; Tamrin Tamrin; Muhammad Amin
Jurnal Agricultural Biosystem Engineering Vol 1, No 4 (2022): Desember 2022
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research is about the effect of temperature and thickness level of carrot slices on the quality of carrot flour. Processing and consumption of carrots is still limited to fresh carrots and carrot juice. The advance of technology makes people demand alternatives to fresh materials that have a short shelf life and are less practical in processing them into a product. Carrot shelf life is short resulting in many carrots wasted. Therefore, an alternative is needed to process carrots into flour. The purpose of this study was to study the effect of temperature and thickness level of slices on the quality of carrot flour on water content, color, vitamin C content, and flour density. This research uses factorial completely randomized design (RAL) consisting of 2 treatments and 3 replications. First factor is temperatures of 50 ° C (T1), 70 ° C (T2), and 90 ° C (T3). The second factor is the thickness of the slices of 2 mm (A1), 4 mm (A2), and 6 mm (A3). The parameters observed were water content, color, vitamin C content, and density. The results obtained in this study were the water content obtained ranged from 13.15% - 18.74%. The resulting color resembles fresh carrots that is orange with a color value of 95.087. The content of vitamin C in carrot flour ranges from 0.4425 mg/g - 0.5508 mg/g. The density of carrot flour produced is close to each other in the range of 0.5133 g/cm3 - 0.5142 g/cm3. The difference in temperature and thickness affects the level of concentration and does not affect the content of vitamin C and flour density. The difference in thickness does not affect the color. Keyword: Carrot, Drying, Temperature, Thickness.
The Relationship between Population Dynamic and Garang River Upstream Environment in Central Java, Indonesia Puji Hardati; Dewi Liesnoor Setyowati; Thriwaty Arsal; Muhammad Amin; Edy Trihatmoko
Indonesian Journal of Geography Vol 54, No 3 (2022): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.75767

Abstract

The interaction of the human population with nature can cause environmental damage such as the degradation of the watershed carrying capacity. Therefore, this study aimed to analyze the relationship between population dynamic and the upstream environment alongside Garang River using four villages including Munding, Lerep, Kalirejo, and Pakintelan. Data were collected from several stakeholders including selected heads of households supported by key informants such as community leaders and the river care communities using field observation, a household survey through questionnaires, in-depth interviews, and documentation. The households used as samples were selected through proportional random sampling and the data retrieved were analyzed through a descriptive quantitative method which involved the cross-tabulation of household data on economic activities and environmental management practices. It was discovered that 1) the population of the Garang River’s upstream was very dynamic with growth rates varying from 1.05% to 3.93%, 2) the main livelihood of the population and dominant land use was the agricultural sector, 3) the community realized that the harmonic relationship with the environment was a critical condition to support farming activities and fulfil daily necessities, and 4) the society kept maintaining the river through different activities such as "bersih sungai" or river cleaning and "sedekah bumi" or thank-giving to the environment. Moreover, the harmonic relationship between the people and the river environment is in form of several activities. These included waste management, cleaning rivers, maintaining clean waterways, actions to create a clean and healthy environment, and joining the efforts to care for the environment. The harmony was observed to have been realized through the integration of diversity, interdependence, unity, and the value of providing care.
Co-Authors Dahlia Dahlia Dewi Liesnoor Setyowati Edy Trihatmoko Maya Ardila Oktafri Oktafri Puji Hardati Ridwan Ridwan Risya Delfira Cahyani Effendi Sandi Asmara Sapto Kuncoro Tamrin, Tamrin Thriwaty Arsal