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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Agrointek Rekayasa Mesin Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Machine : Jurnal Teknik Mesin Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) The Indonesian Journal of Infectious Diseases Jurnal Pengabdian Magister Pendidikan IPA Jurnal Riset Teknologi Industri Jurnal Abdi Insani Jurnal Pendidikan Teknik Mesin Undiksha MACHINERY: Jurnal Teknologi Terapan Jurnal Bakti Nusa Jurnal Karya Pengabdian Teknik Mesin Jurnal Pepadu Energy, Materials and Product design

Ida Bagus Alit

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Author-ID : 2233745

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences

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Unjuk Kerja Kotak Pendingin Peltier dengan Unit Pembuang Panas Heat Sink Fin-Fan dan Single Fan Heat Pipe Mirmanto, M.; Alit, Ida Bagus; Anggani, Yudi
Rekayasa Mesin Vol 10, No 1 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.01.1

Nowadays, technology is growing rapidly. A refrigerator is one of the technology applications by using heat transfer phenomena. However, the existing refrigerators in big size, need large power, and able to damage the ozone because most of the refrigerators utilize CFC. It is necessary to create a compact refrigerator with low energy needed and environmental friendly. In this study, a small cooler box of 24.5 cm x 20 cm x 28.5 cm with 2 modules Peltier SP 1848-27145 type arranged in cascade was used as a refrigerator. The data were logged by using the data logger DAQ MX 9714 NI that was connected to the PC by using LabView. In this experiment, 22 Watt of the electric power was used and 350 ml water was placed on the cooler box room. The results show that the temperature of the cooler box room with a single fan heat pipe is lower than the heat sink fin-fan. Furthermore, the temperature of the cooler box room with the single fan heat pipe where 350ml water was placed is lower than the cooler box room without the single fan. Moreover, the COP of the cooler box is significantly affected by the heat dissipation unit.

Pengaruh Kecepatan Udara pada Alat Pengering Jagung dengan Mekanisme Penukar Kalor Alit, Ida Bagus; Susana, I Gede Bawa
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.9

The purpose of this study was to design and determine the performance of a dryer for drying corn with biomass burning energy sources. The dryer consists of a biomass stove, a heat exchanger, and a drying cabinet. The dimensions of the biomass stove are 500 x 500 x 800 mm with a diameter and hole distances of the biomass stove wall is 10 mm and 50 mm, respectively. The heat exchanger pipe diameter is 25.5 mm, the drying cabinet 500 x 500 x 600 mm, and the biomass was rice husk. The heat exchanger is made of stainless steel pipes arranged in a parallel arrangement. A heat exchanger pipe connects the biomass stove to the drying cabinet in order to avoid drying products from burning biomass contamination. The results showed that the drying rate could be faster if the air velocity increases. Drying corn in order to reduce water content from 19% to 12% takes 47 minutes with an air velocity of 3 m/s.

Penyuluhan dan Simulasi Menentukan Tipe dan Dosis Latihan Fisik yang Benar untuk Mencapai Kebugaran Fisik yang Optimal pada Pegawai Rektorat Universitas Mataram: Physical exercise; Type of physical exercise; Dose of physical exercise; Physical fitness Ida Ayu Eka Widiastuti; Rifana Cholidah; Gede Wira Buanayuda; Ida Bagus Alit
Jurnal Pengabdian Magister Pendidikan IPA Vol 4 No 4 (2021)
Publisher : Universitas Mataram

One of the efforts made to get a healthy condition is to do regular physical exercise. Regular and measurable exercise will result in optimal physical fitness. Physical exercise is done regularly, according to the needs of each individual and by applying the basic principles of exercise, various benefits will be obtained for the body. The purpose of this activity is to educate and increase target knowledge in determining the type of physical exercise and preparing the correct dose of physical exercise to achieve optimal physical fitness. The participants were the Rectorate Staff of the University of Mataram, totaling 40 people, consisting of 14 men and 26 women. The activity lasted for approximately 120 minutes, located in the Ruang Sidang Utama of the Rectorate of the University of Mataram. The implementation of the activity consists of 5 stages, namely: (1) pretest, (2) delivery of counseling material, (3) simulation of determining the type and dose of physical exercise, (4) discussion, and (5) posttest. From the results of this activity, an increase in the knowledge of participants in the activity was obtained by 38.6%, based on the posttest to pretest scores. Participants have an idea in determining the type of physical exercise and determining the appropriate dose of physical exercise for each of them.

Pengaruh rasio konsentrasi pada turbin air Savonius Ida Bagus Alit; Yesung Allo Padang; Mas'ud Mas'ud; Rudy Sutanto; I Gede Bawa Susana
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Irrigation channels have the potential to be used as power plants. Savonius water turbine can be developed because it has a simple construction and is suitable for low speed, according to the characteristics of the irrigation channel. The objectives of the research were to understand the influence of the installation of concentrator the performance of Savonius water turbine. Concentrator can steer the incoming water flow toward the turbine blades that generate positive moments, consequently, the generated power increases. Variations in the concentration ratios studied were 2: 1, 3: 1, and 4: 1. The results show that adding concentrators can increase torque, turbine power and power coefficient. The best performance of the Savonius water turbine showed is with the concentrator ratio of 3:1.

PENGERING SUMBER ENERGI BIOMASSA SABUT KELAPA MENINGKATKAN PENGHASILAN PERAJIN IKAN TERI SKALA RUMAH TANGGA I Gede Bawa Susana; Ida Bagus Alit
AGROINTEK Vol 15, No 1 (2021)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v15i1.7200

The process of drying anchovy traditionally causes the temperature and drying time to be suboptimal. This affects the income of anchovy fish processing workers. To increase the income of anchovy processing workers, a dryer is designed with a coconut fiber biomass energy source. The study was conducted on a sample of 20 people and a drying chamber capacity of 24 kg of wet anchovy. The drying process is carried out in the drying chamber. The drying chamber is integrated with a coconut fiber biomass burning stove and heat exchanger. Hot air drying is obtained through the conversion of coconut fiber thermal energy. The process of energy conversion occurs between the burning of coconut fiber in the furnace with environmental air flowing in the heat exchanger pipe. The resulting hot air flows into the drying chamber. This system has an impact on weather-free drying. In addition, the results of drying become hygienic. This has implications for the increased income of anchovy processing workers. Profits reach 3,408,000.00 IDR every month. Anchovy processing workers enjoy the profit from the investment costs of the dryer after 4.464 months. Coconut fiber biomass dryer has a Return on Investment level of 274.36%. It can be said that the application of coconut fiber biomass dryers in the process of drying anchovies provides positive results in the form of economics the profits.

Ragam Alel Mikrosatelit DNA Autosom pada Masyarakat Bali Aga Desa Sembiran Kabupaten Buleleng Bali I Ketut Junitha; Ida Bagus Alit
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 16, No 1 (2011): February 2011
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v16i1.60

Berdasarkan data sejarah dan arkeologis, masyarakat Bali sekarang ini merupakan hasil perkembangan sejarah zaman pra-sejarah. Masyarakat Bali kuno yang masih memiliki tradisi zaman pra-sejarah disebut masyarakat Bali Aga atau Bali Mula. Pada umumnya masyarakat Bali Aga menempati daerah pegunungan seperti desa Tenganan, Terunyan, Sembiran dan Sidatapa, sedangkan masarakat Bali lainnya disebut masyarakat bali Dataran yan tinggal di kota-kota dan daerah pantai. Sebanyak delapan penanda genetik mikrosatelit autosom (D2S1338, D3S1358, D5S818, D7S820, D11S1984, D13S317, D16S539 dan D21S11) digunakan untuk menentukan variasi alel yang tersebar pada masyarakat desa Bali Aga Sembiran kabupaten Buleleng Bali untuk kepentingan forensik. Dalam penelitian ini ditemukan sebanyak 46 ragam alel dari 8 lokus yang digunakan, ragam alel perlokus berkisar antara 3 pada lokus D5S818 sampai 9 alel pada lokus D11S1984. Nilai kemampuan pembeda (power of discrimination/PD) tertinggi ditemukan pada lokus D11S1984 (0,9394) diikuti oleh D21S11(0,8922), D16S539 (0,8915), D13S317 (0,8602), D7S820 (0,8398), D3S1358 (0,8014), D2S1338 (0,5518) dan D5S818 (0,0143). Hasil ini menunjukkan bahwa lokus D5S818 tidak baik digunakan dalam analisis DNA untuk kepentingan forensik pada masyarakat Bali Aga desa Sembiran.

Analisis unjuk kerja motor bensin 4 langkah 1 silinder 100 cc berbahan bakar etanol I Made Mara; I Made Adi Sayoga; I Made Nuarsa; Ida Bagus Alit; Kade Wiratama
Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin
Publisher : Universitas Mataram

In line the population growth, technological developments and the increasing of vehicles, the necessary of fuel is increase. Therefore, the people try to find an alternative fuel that is ethanol as vehicle fuel. To increase the performance and efficiency to use of ethanol fuel in an engine is by varying the ignition timing.This research aimed to investigate the influence of ignition timing to torque, power and specific fuel consumption effective (SFCe) with 96% ethanol fuel. in an engine four stroke single cylinder 100 cc Honda Astrea Legenda. The ignition timing variation are 15˚, 20˚ and 25˚ before TDC and the engine speed are 1500, 2500, 3500, 4500, and 6000 rpm.The results show that the engine has better performance when the engine running on the ignition timing is advanced. The highest torque at 20˚ ignition time before TDC 0.868 kgf.m at 6000 rpm, the highest effective power at 20˚ ignition time before TDC of 7.272 ps at 6000 rpm, and the lowest SFCe at 20˚ ignition time before TDC is 0, 08 kg / PS.hour at 6000 rpm.

Aplikasi medan magnet pada saluran bahan bakar sepeda motor untuk penghematan konsumsi bahan bakar dan penurunan emisi gas buang I.M. Mara; I.B. Alit; I.G.B. Susana; I.M. Nuarsa
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Reducing fuel consumption and improving fuel quality in motorcycle engines are very important in order to make the exhaust gas emission from the engine becomes more environmentally friendly. In this study, a magnetic field is attached to the fuel line so that the fuel is affected by the magnetic field. The magnetic field is obtained from electromagnetic magnets and permanent magnets. Fuel consumption is tested on a motorcycle engine that it uses a carburetor system and on an engine that uses a fuel injection system. The exhaust emissions observed were CO and HC by using exhaust gas analyzer. The results showed that the use of a magnetic field mounted on the fuel line can reduce the fuel consumption of a motorcycle engine, using either a carburetor system or a fuel injection system by an average of 18%. The use of magnetic fields also shows a very good effect in reducing exhaust gas emissions from motorcycle engines. The length of the magnet attached to the fuel line, 80mm provides a reduction in exhaust gas emissions of CO by 80% - 90% and HC by 60% - 77%. The percentage reduction in exhause gas emission is better than the other length of magnets.

PENGARUH JUMLAH JET HOLE DAN DIAMETER INNER PIPE TERHADAP UNJUK KERJA KOMPOR ALKOHOL Irwan Humaidi; Ida Bagus Alit; I Made Nuarsa
Dinamika Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (353.613 KB)

Alcohol is an renewable alternative fuel produced from plants material. Plants usually contains essence such as : cassava, yam, corn, and sago palm essence. Processing for producing alcohol begin from hydrolysis process, that is essence converts to glucose then fermentation process to converting glucose to ethanol and CO2. After fermentation process ends, we continue to destilation process to decomposing alcohol based on its boiling point.This research aims to know design of alcohol stove design by variating its jet hole quantity and inner pipe diameters. Duration of heating, heat dropped, fuel consumption, and alcohol-stove efficiency are attentioned variables in this research. Combustion process of alcohol-stove begin with entering fuel to fuel tube then firing up the stove by striking fire on weep hole in inner pipe, combustion will increasing stove temperature and steam the alcohol. The steam will turn out through the jet hole so the stove flame is stable.This research result shows have been showing the stove most optimum showed by alcohol stove with 1 ½ inch inner pipe diameter variation with most jet hole is 8 holes, because the efficience at variation of this stove is high and the burning time it quick also. The greatest quantity of fuel consumption with variety of jet hole 16 amount with 1 ½ inch diameter that is 0.1061 ml/second. Whereas the bigest stove efficiency contained in stove with inner pipe diameter variety 1 ¼ inch with amount of jet hole 8 that is 48,33%.

Physical Measurement Analysis in Pre-Utility Covid-19 Isolation Room: A Case Study Universitas Mataram Teaching Hospital Eustachius Hagni Wardoyo; Ida Bagus Alit; Monalisa Nasrul; Didit Yudhanto; Prima Belia Fathana; Rini Srikus Saptaningtyas
The Indonesian Journal of Infectious Diseases Vol 7, No 2 (2021): The Indonesian Journal of Infectious Disease
Publisher : Rumah Sakit Penyakit Infeksi Prof Dr. Sulianti Saroso

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32667/ijid.v7i2.121

Background: Negative pressure room is recommended for the treatment of COVID-19 patients. Aim this study to describe physical measurement analysis of isolation room Universitas Mataram Teaching Hospital. Methods: Newly developed negative pressure isolation room was physical measure using following instruments: anemometer, moisture meter, hygrometer and pressure gauge. Results: This study showed physical measurement as follow: 1) ACH (air change per hour) 23.3 / hour [minimum: 12+ ACH]; 2) the difference in pressure gradient between the inpatient room and anteroom -30 Pa [minimum -15 Pa]; 3) the mean of air temperature 24.8°C [21-24]; 4) air humidity 58% [maximum 65%] and 5) concrete moisture 22.45%. Conclusion: The COVID-19 isolation room at the Universitas Mataram Teaching Hospital meets the standard criteria.

Co-Authors Achmad Zainuri Adhi W.A., I G.A.K. Chatur agus dwi catur Aldi Mukaddim, Aldi Anggani, Yudi Arif Mulyanto Chatur Adi.W.A, I.G.A.K Didit Yudhanto Dyah S., Emmy Emmy dyah S Eustachius Hagni Wardoyo Gede Wira Buanayuda Gilang Rezeki, Gilang I G.A.K Chatur Adhi W.A. I Gede Bawa Susana I Gede Bawa Susana I Kade Wiratama I Ketut Junitha I Ketut Wiryajati I Made Adi Sayoga I Made Adi Sayoga I Made Mara I Made Nuarsa I Made Nuarsa I Made Nuarsa, I Made I Made Suartika I Wayan Joniarta I.D.K. Okariawan I.M Mara I.M. Mara I.M. Nuarsa Ida Ayu Eka Widiastuti Irwan Humaidi Irwan Humaidi, Irwan M. Mirmanto, M. Made Mara, Made made wirawan Made Wirawan Made Wirawan Made Wirawan, Made Maharsa Pradityatama Mas'ud Mas'ud Monalisa Nasrul N. Nurchayati, N. Nur Kaliwantoro Nur Kaliwantoro Pandri Pandiatmi Perdana Putra, I Ketut Prima Belia Fathana Putu Aditya Wiguna Putu Aditya Wiguna Rifana Cholidah Rudi Sutanto, Rudi Rudy Sutanto Sinarep Siti Rahmatul Aini Srikus Saptaningtyas, Rini Sujita Darmo Sujita Darmo Sujita Darmo Sujita Sujita Sujita Sujita Sujita, Sujita Sultan Sultan Syahrul Yesung Allo Padang Yudhyadi, I Gusti Ngurah Ketut Zainuri Achmad

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