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Alfian Qomaruddin
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Universitas Trunojoyo Madura Jl. Raya Telang - Kamal, Bangkalan Kode Pos 69162
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REKAYASA
Published by Universitas Trunojoyo Madura
ISSN : 02169495     EISSN : 25025325     DOI : https://doi.org/10.21107/rekayasa
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Engineering Physics
This journal encompasses original research articles, review articles, and short communications, including: Science and Technology, In the the next year publication, Rekayasa will publish in two times issues: April and Oktober.
Arjuna Subject : -
Articles 504 Documents
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Efek Penambahan Ekstrak Jahe (Zingiber officinale Rosc.) Serta Rasio Glukosa dan Fruktosa Pada Sucrose-Free Hard Candy Supriyanto Supriyanto; Mojiono Mojiono; Meriya Widianti Prastika Dewi
Rekayasa Vol 16, No 2: Agustus 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i2.20158

Abstract

Hard candy is a non-crystalline product with a hard texture, shiny appearance and clear cooked at high temperature (140-150°C). One of the main ingredients in making hard candy is sucrose which can accelerate the growth of Streptococcus mutans bacteria, the main cause of dental caries. Thus, researchers conducted a study making sucrose-free hard candy ginger extract products using fructose and glucose syrup as sugar substitutes (sucrose) which are expected to inhibit the growth of Streptococcus mutans bacteria. The purpose of this study was to determine the effect of the ratio of fructose and glucose on the characteristics of sucrose-free hard candy, ginger extract (Zingiber officinale Rosc.) and find out the best formula in making sucrose-free hard candy, ginger extract (Zingiber officinale Rosc.) based on sensory tests. This research method uses Non-Factorial Complete Randomized Design (RAL). The study parameters include Ph, dissolving time, sensory, RGB color, and antibacterial. The effect of the ratio of fructose and glucose on the characteristics of sucrose-free hard candy ginger extract (Zingiber officinale Rosc.) is that the less fructose added and the more glucose, the higher the Ph of the candy, the longer the soluble time, the brighter color produced and the weaker the inhibitory power. Based on the results of sensory tests, it can be concluded that the best formulation in making sucrose-free hard candy ginger extract (Zingiber officinale Rosc.) is formula 3 with a ratio of glucose and fructose of 80:30 grams.
Fuzzy Logic dalam Pengontrolan Nilai Intensitas Cahaya LED pada Mini Plant Factory Budidaya Tanaman Pak Choy (Brassica Chinensis L.) Hidroponik Choirul Umam; Fahmi Arief Rahman; Mohammad Syafii; Nurul Hidayat
Rekayasa Vol 16, No 2: Agustus 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i2.15347

Abstract

Ideally, the Pak Choy plant (Brassica Chinensis L) is cultivated with microenvironmental conditions of temperature 150C- 320C, humidity 60% - 80% and the same intensity of sunlight as other vegetable plants, namely in a vegetative vase of 300-400 micromols/m2/second and a period of generative 500-1000 micromols/m2/sec . The challenge of agriculture today is to meet the increasing need for food with limited land and uncertain plant microenvironmental conditions, one solution to this problem is planting using a plant factory system. Fuzzy logic has an effective method for controlling plant factory control systems, due to its flexibility and simple calculations. The purpose of this research is to find the PWM value in the plant factory control system that suits the optimal needs of pak choy vegetable cultivation. There are 4 stages in the research, namely the primary data input of the LED plant factory, Fuzzyfication, Fuzzy Interface System and Defuzzification. Data was taken using a lux meter and there were a total of 56 fuzzy rules and 4 fuzzy rules that did not have a value of 0. The lighting level/light intensity control system based on fuzzy logic was obtained with a PWM (Pulse Width Modulation) value of 872.1662 for a light intensity set point of 8000 Lux.
Integration of Customer Needs in Sativa Mouthwash Design With Quality Function Development (QFD) Approach Lusi Zafriana; Ernie Maduratna Setiawatie
Rekayasa Vol 16, No 2: Agustus 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i2.19950

Abstract

Public awareness of oral-hygiene and health has influenced the increase demand for mouthwash products. To support the green innovation program, a mouthwash made from herbs and halal is needed. Sativa mouthwash is an innovative product using 3% Nigella Sativa extract. The QFD method is used as an evaluation of the productivity of Sativa mouthwash through the preparation of the HoQ matrix. It shows the level of connectedness between Customer and Technical Importance to get priority on the main technical interests that must be carried out immediately by the production company. The results of HoQ matrix calculation shows the highest-ranking attributes of the product is Nigella Sativa content, Raw Material Management, and Halal Label Design. The technical priority to achieve the customer interest attributes is packaging type. This means that the attributes of adding and processing Nigella Sativa ingredients that are right and labelled as halal have unique characteristics that greatly affect the sales productivity of Sativa Mouth Wash products. However, on the attribute of the type of packaging, Sativa Mouth Wash has not yet produced in sachets or small bottles which provide convenience and practicality that is needed by the customers
Evaluasi Kandidat Jagung Hibrida terhadap Cekaman Kekeringan pada Fase Perkecambahan menggunakan Polyethilene Glicol (PEG 6000) Aprilia Aprilia; Suhartono Suhartono
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.20907

Abstract

Produktivitas jagung  yang rendah di Pulau Madura disebabkan oleh ketersediaan air yang rendah.  Salah satu strategi yang digunakan untuk mengatasi permasalahan rendahnya produktivitas jagung di Madura adalah dengan merakit varietas jagung yang tahan terhadap cekaman kekeringan. Penelitian ini bertujuan untuk mengetahui ketahanan kandidat jagung hibrida pada fase perkecambahan menggunakan Polyethylene Glicol (PEG 6000). Penelitian ini menggunakan metode RAL (Rancangan acak lengkap) dengan dua faktor yaitu genotip jagung dan konsentrasi PEG 6000. Semua genotip dikecambahkan dengan metode uji kertas gulung dalam plastik (UKDdp), kemudian dilembabkan menggunakan campuran aqudesh dengan PEG 6000 sesuai perlakuan. Data yang diperoleh dianalisis menggunakan Analysis of Variance (ANOVA) pada taraf 5 % dan apabila menunjukkan pengaruh nyata maka dilakukan uji lanjut Duncan Multiple Range Test (DMRT) pada taraf 5%. Hasil penelitian menunjukkan bahwa genotip jagung dan Konsentrasi PEG 6000 berpengaruh terhadap semua parameter yang diujikan sehingga terdapat perbedaan karakter antara genotip satu dengan genotip lainnya. Genotip yang tahan terhadap cekaman kekeringan pada fase perkecambahan menggunakan PEG 6000 adalah G1 dan G5. Genotip yang moderat toleran adalah G3, G7, dan G8, sedangkan genotip yang peka terhadap cekaman kekeringan adalah G2, G4, G6, G9, dan G10.
Pengukuran Topografi Ketinggian: Studi Kasus Menggunakan Metode Real-Time Kinematic (RTK) GPS Geodetik R6 Prayogo, Luhur Moekti; Muhsoni, Firman Farid
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.27337

Abstract

Large-scale topographic information is often difficult to obtain accurately. Technological advances in the field of surveying provide sophisticated instruments with varying degrees of accuracy. One of the widely used instruments is the Global Positioning System (GPS) Geodetic R6, which has an accuracy of up to 5-10 mm and the ability to capture L1 and L2 signals. This research aims to conduct altitude topography mapping using GPS Geodetic R6 in the coastal area of Kamal, Bangkalan Regency, Madura. The method used is Real-Time Kinematic (RTK) with a configuration of two base stations. The first base is located at Trunojoyo University Park Madura (coordinates: S 7°07'44.99587“, E 112°43'23.81230”, elevation: 6.81 meters), while the second base is located in front of Jalan Raya Telang Church (coordinates: S 7°07'46.65292“, E 112°42'46.91250”, elevation: 3.40 meters). The measurement results show that the average elevation in Telang Village, Kamal District, ranges from 3.29 to 7.89 meters with a Root Mean Square Error (RMSE) of 3.65. This research confirms that the R6 Geodetic GPS has high accuracy capabilities in topographic measurements, making it very reliable for precision mapping of coastal areas. This finding makes a significant contribution in supporting various development and mitigation needs in coastal areas.
Pengaruh Perbandingan Rasio Tepung Kentang dan Tepung Tapioka Serta Penambahan Bubuk Daun Kersen (Muntingia calabura) Pada Mie Basah Non Gluten Handayani, Anna Mardiana; Citra Kusumasari, Findi; Setyowati, Lisus; Nurul Satya, Malinda Capri
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.27254

Abstract

This study aims to determine the effect of the ratio of potato flour and tapioca flour and addition of kersen leaves powder on gluten-free wet noodles with a focus on proximate levels (water, ash, protein, fat, and carbohydrate content by different) and antioxidant activity (DPPH method). The research design used was a RAK with two factors. The first factor was the ratio of potato flour and tapioca flour and the secondly was the variation of kersen leaves concentration, which consist of 3 treatment levels respectively, so it’s obtained 9 samples with 2 replications. The data were processed using the ANOVA test and if there was a significant difference, then continue with the DMRT test (significance level 5%). The results showed that the effect of the ratio of potato flour and tapioca flour had an effect on increasing water content, protein content and reducing on carbohydrate content while ash content and fat content did not have a significant effect. Non-gluten wet noodles had antioxidant activity of around 36.2-52.5%. The increased of the concentration of kersen leaves powder so the antioxidant activity as well as increased. Further research is still needed to examine the potential of our functional food products such as antidiabetic and antihypercholesterol using in vivo studies. Also, the isolation of bioactive components of kersen leaves using nanotechnology to make them easier to be absorbed by the body.
Karakterisasi Enam Galur Melon Daging Orange (Cucumis melo L.) di PT. Aditya Sentana Agro Maghfirani, Siti Faizzatul; Tripatmasari, Mustika; Wijaya, Wakhyono
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.28397

Abstract

Efforts are made to produce superior seeds and pest and disease resistance through variety assembly. Characterization produces information that is used in planning the creation of melon plants as desired. This study aims to determine the characteristics of six strains of orange flesh melon and determine the kinship relationship of six melon strains. This research was conducted in August-November 2024. This study used a non-factorial Randomized Group Design, with 6 treatments (strains 33, 51, 52, 53, 54, and 55) repeated 3 times. Qualitative data were analyzed in the form of descriptions referring to IPGRI descriptor guidelines (2003). Quantitative data were analyzed by ANOVA, if the results of the analysis were significantly different then further tested using DMRT at the 5% level. The character of leaf shape and leaf color in 6 strains is entire and colored Greyis Olive Green 137 A. The character of male and hermaphrodite flower crown color in G33, G51, G52, G54, and G55 is Vivid Yellow 12 A, G53 is Vivid Yellow 9 A. The character of fruit shape of G33, G51, G52, G53, and G54 is elliptical, while G55 is round. The color of the fruit flesh of G51, G53, and G55 is Strong Orange 25 B. The lowest percentage of senescence was observed in G54 (16.7%). G33, G51, G52, and G54 are closely related with a coefficient value of 83%.
Plastic Waste Identification using ResNet-50: A Deep Learning Approach Bakti, Akmal Nusa; Shabrina, Nabila Husna
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.26456

Abstract

Plastic waste is a significant environmental concern, constituting a major portion of the global waste stream. Improper disposal and accumulation have led to severe environmental challenges, including pollution, harm to marine life, and contributions to climate change. Effective waste management strategies are essential to mitigate these issues. However, manual sorting methods are both time-consuming and costly, requiring substantial human effort and financial investment. To address these limitations, automated solutions utilizing advanced technologies like artificial intelligence have gained increasing attention. Deep learning-based method can automatically identify and classify various types of plastic waste using computer-captured image patterns. This study explores the application of ResNet50, a state-of-the-art deep learning model, for the classification of plastic and non-plastic waste. A robust dataset comprising 4,000 diverse images of waste materials was employed for model training and validation. ResNet50, with its advanced architecture designed for image recognition tasks, demonstrated exceptional performance, achieving an accuracy, precision, recall, and F1-score of 0.99. These results highlight the model’s ability to precisely and reliably differentiate between plastic and non-plastic waste categories. The findings of this research underscore the potential of deep learning-based approaches in revolutionizing waste management practices. By leveraging automated classification methods, waste sorting can become significantly faster, more accurate, and cost-effective. This has far-reaching implications reducing environmental harm and fostering a more sustainable future. The results demonstrate that integrating AI technologies into waste management systems can lead to efficient and environmentally friendly solutions for tackling plastic waste challenges.
Analisis Penyebab Keterlambatan Proyek Konstruksi Transmisi dan Gardu Induk: Studi Kasus Unit Induk Pembangunan Jawa Bagian Timur dan Bali (UIP JBTB) Prawidhana, Denta; Dinariyana, AAB
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.28014

Abstract

As many as 87.63% of PT PLN (Persero) UIP JBTB Transmission and Substation construction projects in the 2010-2023 range experienced delays. The purpose of this study is to determine the main factors that contribute to project delays from the perceptions of internal, supervision consultants, and contractors and provide suggestions to Management to minimize potential losses due to delays in project completion in the future. The methods used in this research are literature study, data collection through survey, data analysis, and conclusion. Data analysis is done quantitatively using Frequency Index and Relative Importance Index, Independent T Test, Cartesian Diagram, and 5 Why's. The results of this study indicate that there are 5 most influential variables in delays, namely delays in land acquisition, community social conflicts, labor shortages, delays in submitting drawings, and cash flow difficulties. Strategic steps to overcome delays in project completion are to select prospective land for transmission and substation construction projects on undisputed land, create a project security MoU by involving security forces either TNI or Polri, create a smoother financial flow system, create an easy and effective payment system in the project, and monitor the administrative process and create an easier and safer document management system.
Efek Giberelin (GA3) Terhadap Perkecambahan dan Pertumbuhan Cabai Rawit (Capsicum frustescens L.) Syafii, Mohammad; Mawarda, Revina Ade; Umam, Choirul
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.27902

Abstract

Chilli pepper (Capsicum frutescens L) is an important horticulture in Indonesia. High demand often did not meet the production. One of the leading factors is the quality and bad seed conditions, which affect plant growth and production. This research was conducted from February to May 2024 in the research field and laboratory of Plant Breeding and Biotechnology, Agroecotechnology Study Program, Faculty of Agriculture, University of Trunojoyo Madura. The research aim was to determine the effect of gibberellin concentrations and varieties on the germination and plant growth of chili peppers. Factorial randomized Block Design (RBD) was used in this research with gibberellin as the first factor G0 (0 ppm), G1 (1.07 ppm), G2 (1.10 ppm), G3 (1.23 PPM), and the second factor was varieties including V1 (Bhaskara), V2 (Master), V3 (Viral). The data obtained from this experiment was analyzed with analysis of variance (ANOVA) at a 5% level of confidence, and if there were significant differences, the Duncan multiple range test (DMRT) was performed. This experiment showed that G0 and V1 had the best responses to germination and plant growth compared to the other treatments. Furthermore, this showed that gibberellin, the range of treatments, is still ineffective in increasing the germination ability and the growth of chili peppers.

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