Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

6.789

P-Index

This Author published in this journals

All Journal Traksi : Majalah Ilmiah Teknik Mesin Jurnal Energi Dan Manufaktur Jurnal Teknologi Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Jurnal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin JCES (Journal of Character Education Society) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Media Farmasi Jurnal Serambi Engineering Patria Artha Technological Journal JIEMS (Journal of Industrial Engineering and Management Systems) Barometer JURNAL KAJIAN TEKNIK MESIN Jurnal Teknik Mesin G-Tech : Jurnal Teknologi Terapan Jurnal Pendidikan Teknik Mesin Undiksha V-MAC (Virtual of Mechanical Engineering Article) Jurnal Ilmiah Wahana Pendidikan ARMATUR : Artikel Teknik Mesin dan Manufaktur AKM: Aksi Kepada Masyarakat Eksergi: Jurnal Teknik Energi Journal of Mechanical and Electrical Technology Innovative: Journal Of Social Science Research Jurnal Polimesin Serambi Engineering

Anjani, Ratna Dewi

Universitas Singaperbangsa Karawang

Author-ID : 2940793

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 Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

Published : 53 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Analisa Performa Bilah Taperless Dengan Airfoil S2091 Pada Turbin Angin Sumbu Horizontal Irvan Indra Cahyadi; Ratna Dewi Anjani
Jurnal Teknik Mesin Vol 14 No 2 (2021): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.14.2.567

Utilization of wind energy is one option to produce electrical energy in the form of wind turbines. Wind energy is also renewable energy that can be utilized because of the potential for wind energy in Indonesia with an average wind speed of 2- 6 m/s. The purpose of this performance analysis is to obtain high efficiency so that the S2091 taperless blade can rotate at relatively low Indonesian wind speeds. Airfoil S2091 has an optimal Cl/Cd value to produce 500 W of power. This performance analysis uses the Blade Element Momentum (BEM) method in which the blade is divided into several elements, starting from determining the radius, chord, and twist on the blade. The assumed parameters will be simulated using Qblade v0.96 software and designing 3D blade designs using SolidWorks software. The dimensions of the taperless blade with the S2091 airfoil have a radius of 0.8 m, a chord of 0.12 m, a twist angle of 6.96o - 9.96o, and a maximum Cp value of 47% at a TSR of 4.5. At a speed of 12 m/s the maximum power generated is 998 W when the angular speed of the blade is 645 rpm and the minimum power generated is 95 W. Then the average power generated is 640.94 W. The results of field tests have a maximum charging power of 138 .46 W and an average charging of 14.13 W. Then the power obtained is 257.80 Wh. From these data, the efficiency of the blade system is 30%–40% and the efficiency of field testing is 34.16%.

Rancang bangun mesin press baglog untuk pembuatan media tanam bibit jamur merang Deri Teguh Santoso; Ratna Dewi Anjani; Rianita Puspa Sari; Febri Aljabar
Jurnal Energi Dan Manufaktur Vol 14 No 1 (2021)
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2021.v14.i01.p03

Mushroom baglog machine is used to assist mushroom farmers in producing mushroom seedling media. It works by compressing baglog media to make it tightly packed and slicing straw for planting media. Because mushroom seeds are bundled in bags (bags) in the shape of compressed logs, the mushroom growth media is sometimes called baglog. Compaction of mushroom seedling medium seeks to enhance the density of the media and its capacity to absorb water. The approach of building a mushroom baglog press machine with low power consumption is appropriate for small farmers' demands. To build a mushroom baglog press machine, numerous machine parts must be designed according to the requirements of the electric motor, belt, pulley, chain, sprocket, and shaft, as well as the convenience of operation. The calculations assume a power output of 0.5 hp, a rotational speed of 1420 rpm, and a transmission ratio of 1:60. The shear stress value on the step shaft in the punch is an accurate measurement, indicating that the design stress is greater than the actual stress.

Analisa Pengaruh Variasi Media Pendingin Pada Proses HeatTreatment Metode Hardening-Tempering Material Baja S45C Terhadap Sifat Mekanik dan Struktur Mikro Aldi Wahyu Permana; Ratna Dewi Anjani; Iwan Nugraha Gusniar
Jurnal Rekayasa Mesin Vol 15, No 3 (2020): Volume 15, Nomor 3, Desember 2020
Publisher : Jurusan Teknik Mesin - Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v15i3.1989

In Our life, we always life with any tools and technology for improve our life. We can find many tools and other technolgy are made from metal. Of course, we need metals which have a characteristic for improve that inquiry, for example in terms of hardness in metal. Metal hardness can be increased in several ways. One of them is the hardening process. This process is a process of heat treatment of metal by heating and then cooling it to a certain temperature. In the traditional market, a lot of shredded coconut water is not used and can be used as a cooling medium in the hardening process. Therefore, the author will use the results of this wate shredded coconut water as a cooling medium for the hardening process. Researchers examined the effect of variations in heat treatment process cooling media on mechanical properties and microstructure with three variations of coolant. temperature 865 ⁰C for hardening process and 465 C for tempering process. research activities include hardness and micro structure testing. The results showed that the hardening process salt water cooling medium had the highest hardness value of 275.6Hv while the lowest hardness was obtained in the coconut water cooling medium which had carried out the tempering process with a hardness of 219.3Hv. This is influenced by SOQ (Severity Of Quenching) or what is called the ability of the cooling media, for salt water the value is 5.0 for SOQ and for coconut water below 2.055. Meanwhile, for the microstructure, it can be seen that the hardening process brine cooling medium has a finer structure than the other cooling specimens. Meanwhile, in the tempering process, martensite turned into finer ferrite cementite with a hardness of 269.3Hv

PERANCANGAN ALAT BANTU KERJA DENGAN MENGGUNAKAN METODE ANTROPOMETRI DAN MATERIAL SELECTION PADA INDUSTRI SEPATU Ratna Dewi Anjani; Asep Erik Nugraha; Rianita Puspa Sari; Deri Teguh Santoso
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.15-24

MSMEs of shoes and sandals producers in Cibaduyut centers in the process of work that is carried out continuously, are known to have a high enough risk, namely in the process of installing sole. The sole installation process in the Home Industry is still using modest work facilities. Besides this sole installation is often done not on the table but on the thigh of the worker, this is very dangerous for the worker because he has a high enough risk of accidents, so that workers become uncomfortable at work. The purpose of this research is to design a working aid in the form of a workbench at the sole of shoe installation station with material selection so that the worker's body position becomes safer, more comfortable and healthier so as to reduce the risk of work accidents due to unfavorable work positions and will increase work productivity. The method used in this study, is an anthropometric method to measure the level of risk of danger from the worker's posture that is using the RULA (Rapid Upper Limb Assessment) method. This calculation is only done at the sole station. Furthermore, using the results of the RULA method, a working tool design in the form of a sole of shoe mounting table can be designed using an appropriate software based on raw material selection, as well as the principles of mechanics and ergonomics.

Edukasi Analisis Teknologi Pada Pengembangan Produk Oatmeal Berbahan Potensi Lokal Larawang Terubuk (Saccharum edule Hasskarl) Sebagai Sumber Pangan Alternatif di SMK Teknologi Karawang Arnisa Stefanie; Farradina Choria Suci; Ratna Dewi Anjani
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 5, No 1 (2021): Desember
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v5i1.6058

Pertanian Karawang sangat melimpah dan potensial untuk dikembangkan. Salah satu wilayah yang melimpah dan potensial yaitu wilayah Loji Kecamatan Tegalwaru Kabupaten Karawang yang khas akan tanaman terubuk. Terubuk (Saccharum edule Hasskarl), merupakan tanaman yang banyak mengandung mineral terutama kalsium dan fosfor, disamping vitamin C. Kandungan yang ada dalam terubuk sangat potensial untuk dikembangan menjadi sumber pangan alternatif dengan kandungan karbohidrat dan energi yang relatif tinggi. Terubuk dapat digunakan untuk substitusi dalam pembuatan makanan, salah satunya adalah dalam pembuatan oats. Oats terubuk dapat dikembangkan sebagai sumber pangan alternatif yang kaya dengan kandungan nutrisi. Tim iBM akan melakukan edukasi analisis teknologi pada pengembangan produk oats terubuk dengan berbahan potensi lokal daerah. Melalui adanya edukasi tentang pengembangan produk lokal oats-terubuk diharapkan dapat memberikan keterampilan dalam pemanfaatan produk lokal yang berpeluang untuk dijadikan usaha mikro.

Analisis Fitokimia Dan Toksisitas Ekstrak Etanol Daun, Kulit Batang, Akar Tanaman Simpur (Dillenia indica L) Dengan Metode Brine Shrimp Lethality Test (BSLT) Marsah Rahmawati Utami; Ratna Dewi Anjani
Media Farmasi XXX Vol 16, No 2 (2020): MEDIA FARMASI
Publisher : Jurusan Farmasi Politeknik Kesehatan Makassar, Kementerian Kesehatan RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32382/mf.v16i2.1746

The elephant apple (Dillenia indica) is a local plant with medicinal potential. Several studies have stated that its fruit and leaf extracts have pharmacological effects, which includes antioxidant, antimicrobial and antidiabetic activity. This research aims to determine the phytochemical content and toxicity activity of the elephant apple (Dillenia indica L) leaf, bark and root extracts. The method used includes plant determination, phytochemical test, extraction, and toxicity test using the Brine Shrimp Lethality Test (BSLT) method. The data analysis technique for the toxicity test was carried out by determining the LC50 value (Lethality Concentration 50) using probit analysis. The results showed that the leaf and stem extracts contained alkaloid, flavonoid, tannin, saponin, terpenoid and steroid class compounds, while the root extract contained alkaloids, flavonoids and tannins. The LC50 extracts of the roots, bark and leaves were 27.10 ppm, 208.26 ppm and 13.57 ppm, respectively. Based on these results, it was concluded that the three extracts have toxicity activity and have the bioactivity potential as an anticancer.Keywords: Dillenia indica, BSLT, LC50, toxicity Simpur (Dillenia indica) merupakan salah satu tanaman lokal yang berpotensi sebagai obat. Beberapa penelitian menyebutkan bahwa ekstrak buah dan daun simpur, memiliki efek farmakologis diantaranya adalah aktivitas antioksidan, antimikroba dan antidiabetes . Penelitian ini bertujuan untuk mengetahui kandungan fitokimia dan aktivitas toksisitas ekstrak daun, kulit batang, dan akar simpur ( Dillenia indica L ). Metode penelitian yang dilakukan meliputi determinasi tanaman,uji fitokimia, ekstraksi, dan uji toksisitas dengan metode Brine Shrimp Lethality Test(BSLT). Teknik analisis data untuk uji toksisitas dilakukan dengan menentukan nilai LC50 ( Lethality Concentration 50) dengan analisis probit. Hasil penelitian menunjukan bahwa ekstrak daun dan batang mengandung senyawa golongan alkaloid, flavonoid, tannin, saponin, terpenoid dan steroid, sedangkan ekstrak akar mengandung alkaloid, flavonoid dan tannin. LC50 ekstrak akar, kulit batang, dan daun secara berturut-turut adalah 27,10 ppm, 208,26 ppm dan 13,57 ppm. Berdasarkan hasil tersebut dapat disimpulkan bahwa ketiga ekstrak memiliki aktivitas toksisitas dan berpotensi memiliki bioaktivitas sebagai antikanker.Kata Kunci: Dillenia indica, BSLT, LC50, toksisitas

Analisis Sifat Mekanik pada Komposit dari Campuran Serat Limbah Rambut Manusia dan Sabut Kelapa Miftahul Anwar; Deri Teguh Santoso; Ratna Dewi Anjani
Jurnal Ilmiah Wahana Pendidikan Vol 7 No 8 (2021): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Currently, the use of materials in the engineering world is growing which encourages researchers from students, companies, to professors in various parts of the world to compete to find the best and environmentally friendly materials and can be recycled (biodegradable). One of them is to make composites from natural fibers as the main material, easy to obtain, high strength, and durable. In this study, the aim of this research is to influence the variation of fiber volume fraction and matrix on the mechanical properties of waste human hair fiber and coconut coir with an epoxy matrix. The method in making this composite uses the hand-lay-up method with a number of variations of 2 specimens each. The volume fraction variations that will be carried out in this study are 5% human hair: 5% coconut fiber: 90% epoxy matrix and 7.5% human hair: 7.5% coconut fiber: 85% epoxy matrix with the test used to test impact ASTM D256. The fiber from human hair itself is obtained from salon waste and the coconut coir itself is obtained from a seller of coconut ice which is dried and then the fiber is taken. Human hair fiber was chosen because it has protein ingredients that cannot be completely decomposed and coconut itself was chosen because it contains cellulose which is capable of having high tensile strength and tenacity. The results of the composite study of a mixture of human hair fiber and coconut fiber showed that the impact test had the best chance in energy and impact value at the volume fraction of 10%: 90%, respectively, 37.7 J and 0.72 J/mm2

Perancangan System Pompa Air Tenaga Surya Terhadap Produktivitas Pertanian Padi (Sawah) Akmal Muhammad Atthoriq; Jojo Sumarjo; Ratna Dewi Anjani
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 6 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

The purpose of this research is to design the system and to find out how efficient this solar water pump system is for the productivity of rice/rice fields. The research method begins with analyzing the system design of the solar water pump so that it can be adapted and applied to the solar water pump system. Then the test is carried out by taking data from the incoming power and outgoing power so that the efficiency of this solar water pump can be calculated. And don't forget to analyze from an economic point of view the advantages of using a solar water pump. The results of the research on the design of a solar water pump on the productivity of rice/paddy farming are for rice fields with a size of 1 hectare, the available NPSHa value (9.424072 m) > NPSHr required (0.0309654 m) is chosen so that a water pump with specifications of 40 x 32 B4 – 50 ,4. And for the test results of the solar water pump, the lowest input power is at 6.00 at 10.3 Watt with a light intensity of 15800 Lux, and the highest input power is at 11.00 at 64.5 Watt with a light intensity of 97000 Lux. As for the output power, the average mechanical output power of the pump is 3.49 Watt and the electric power of the pump is 153.8 Watt. And the average efficiency value for mechanical output power is 13.04%. This means that the solar water pump that the researchers tested can work well but requires a larger input power to be even more efficient, this solar water pump is also more cost-effective because it uses free energy sources for its application.

Analisis Perhitungan Poros, Pulley dan V-belt pada Sepeda Motor Honda Vario 125CC 2018 Agung Izzulhaq Choerullah; Ratna Dewi Anjani; Farradina Choria Suci
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 8 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

In the automotive world today, there are many two-wheeled vehicles with automatic transmission which have become the primary need for many people. To be able to work the vehicle, one that can support the running of the vehicle is the axle on the CVT (Continously Variable Transmission). Likewise with this study, which aims to analyze the calculation of the shaft, pulley and v-belt on the 2018 Honda Vario 125cc motorcycle in order to meet the required criteria and applicable standards. The type of research used is experimental research, data collection is carried out directly. From the calculation analysis that has been carried out, the results obtained; Shaft Diameter = 17.1 mm, Drive Pulley Diameter = 125 mm, Driven Pulley Diameter = 150 mm, Type B standard belt type with the following specifications; Width = 17 mm, Thickness = 11 mm, Groove Angle = 38°, Rubber Density = 1140 kg/cm3, Maximum Tensile Stress = 1.72 Mpa, Velocity V – Belt = 11.77 m/sec, Length V – Belt = 1071.1 mm, maximum tension V – Belt = 250.8 N, Voltage requirement V – Belt = 152.9 N, so that V – belt with Type B can be said to be safe.

PENGARUH KOMPOSISI KIMIA PADUAN Al – Si – Cu PADA PROSES HIGH PRESSURE DIE CASTING DALAM PEMBUATAN CRANKCASE Ratna Dewi Anjani, Heriyanto
BAROMETER Vol 3 No 1 (2018): Barometer
Publisher : Fakultas Teknik, Universitas Singaperbangsa Karawang

Salah satu proses pengecoran secara non konvesional adalah High Pressure Die Casting. Pembuatan produk dengan proses High Pressure Die Casting, tidak terlepas dari masalah cacat yang ditimbulkan. Cacat pada proses pencetakan ini pun merupakan indikator dari kesalahan pada proses pengecoran tersebut. Analisa cacat pada proses ini dilakukan dari proses perancangan, proses peleburan dan pada proses penuangan. Pada proses pengecoran High Pressure Die Casting dengan material paduan Al-Si- Cu sering terjadi cacat berupa cacat porositas shrinkage dan turbulensi. Cacat ini menyebabkan bocor setelah proses machining. Cacat yang terbentuk salah satunya disebabkan karena unsur paduan, karena unsur paduan dapat mempengaruhi temperature penuangan. Analisa cacat porositas shrinkage pada pengecoran High Pressure Die Casting dengan aluminium paduan Al-Si-Cu dilakukan dengan membuat 12 spesimen dari masing-masing sample aluminium cair yang memiliki kadar cacat rendah (tipe YW) dan kadar cacat tinggi (tipe YI). Tujuan dilakukan pembubutan agar permukaan rata sebelum dilakukan uji spektro untuk menganalisa komposisi kimia. Hasil pengamatan ditemukan perbedaan komposisi yang cukup jauh diantara kedua tipe YI dan Tipe YW. Aluminium yang digunakan pada tipe YI kandungannya lebih sedikit dari tipe YW walaupun masih dalam kondisi standar. Pada aluminium cair untuk tipe YI rata-rata kandungan Al 86,0308% ; Si 10,1580% ; Cu 1,8287% ; Fe 0,9079%. Sedangkan pada aluminium cair untuk tipe YW rata-rata kandungan Al 85,5788% ; Si 10,1580% ; Cu 1,8194% ; Fe 0,7948%.

Co-Authors Aa Santosa Aa Santoso Agung Izzulhaq Choerullah Akmal Muhammad Atthoriq Aldi Wahyu Permana Aldo Saputra Alfatah, Muh Irfan Andri Rudiyanto Arfansyah Ramdhani Aripin Aripin Aripin Aripin Arnisa Stefanie Arum, Ardiansyah Aviska Nuravianti Bagas Siswantoro Bimantoro, Bagus Bobie Suhendra Bobie Suhendra Dadan Ma'arif Daniel, Irfan David Henock Tampubolon Deri Teguh Santoso Didiek Pudianto Mubarok Disya Haeriati Ariwiana Putri Dzaky Al Dzikri Eko Nurprasetyo Farradina Choria Suci Fauzan, Farras Noor Febri Aljabar Gamas Rizqilah Gumelar, Reza Hanifi, Rizal Hariyanto, Stefhant Haura Muthia Munawar Iman Dirja Irpan Kurniawan Irvan Indra Cahyadi Iwan Nugraha Gusniar Johan Hendra Saputra Jojo Sumarjo Jojo Sumarjo Kardiman Kardiman - Kardiman, Kardiman Khoerudin Ferry Yusuf Marno , Marno Marno Marno Marsah Rahmawati Utami Miftahul Anwar Mochamad Rafi Herdiana Muchamad Romadon Dwi Arianto Muhamad Taufiq Rachmat Muhammad Fadhlan Farris Muhammad Nur Rizki Muhlis Fajar Wicaksana Munadi Munadi Musthafa, Luthfi Najmudin Fauji Naubnome, Viktor Nugraha, Asep Erik Nugraha, Rapi Oleh, Oleh Prakoso, Sanjaya Rafiq Allam Mutaqin Rahelia, Vira Deandra Reza Setiawan Rianita Puspa Sari Richard Julianno Soeganda Rinto Fuazzidin Rizal Hanifi Rizal Hanifi Sacarya Linggi Allo Sahrul Asrofani Saputra, Muhammad Aji Saputra Aji Sri Bintang Abdul Rohman Stefhant Haryanto, Stefhant Suhelmi, Muhamad Fadhlan Ujiburrahman Webi Kahfi Ekin Saputra Yasin, Muhammad Nur

Title

Found 53 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 53 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 53 Documents
Search