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Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Published by Universitas Al Washliyah
ISSN : 23385391     EISSN : 26559862     DOI : https://doi.org/10.47662/alulum.v10i1
Core Subject : Economy, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan (P-ISSN: 2338-5391, E-ISSN: 2655-9862) is peer-reviewed journal publishes twice in the year (January and July) by Universitas Al Washliyah, Medan. The focus of journal is to publish current original research on Science and Technologi. publish original research papers, review articles, research aplications and case studies focused on Mathematic, Biology, Physic, Chemistry, Informatic, Electronic and Machine, Civil engineering, agriculture as well as related topics.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 107 Documents
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STUDI PRODUKSI GARAM DENGAN METODE PLTS UNTUK PERBANDINGAN AIR LAUT DENGAN AIR TAMBAK Anwar, Dimas Hijjul; Jamaaluddin, Jamaaluddin; Syahrorini, Syamsudduha; Sulistiyowati, Indah
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.942

Abstract

This research discusses the utilisation of Solar Power Plant (PLTS) in the salt production process by comparing the effectiveness of using seawater and pond water. The purpose of this study is to compare the process of making salt using pond water and seawater. The designed system includes automatic heating, temperature control, and automatic pumping system operated with energy from PLTS. The test was conducted for 1.5 hours with a measurement interval of 10 minutes. The results show that seawater produces more salt, namely 6 grams, compared to pond water which only produces 4 grams, with the volume of evaporated water ranging from 5-8 mL each. This difference indicates that the salt content in seawater is higher, making it more efficient for salt production. Although the solar PV system used is not yet fully optimised, this research shows the great potential of using renewable energy in the salt production process that is environmentally friendly and independent from conventional energy supplies.
EVALUASI DINAMIKA STRUKTUR PADA BALOK KANTILEVER FIX- FREE DENGAN MENGGUNAKAN ANALISA METODE ELEMEN HINGGA Siagian, Tony; Derlini, Derlini; Misdawati, Misdawati
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.993

Abstract

This study aims to evaluate the characteristics of the dynamic load that occurs on the beam clamped at one end and the other end in a free condition. At one end of the rod a load is given so that it will cause a larger dynamic load on the rod. The method used to analyze the dynamics of this cantilever rod structure uses the Finite Element Method. The cantilever rod will be divided into four elements and has 10 nodal points, vibrating nodes are occured at node 3 until node 10. By using stiffness and mass matrix analysis, found that the largest deflection value is obtained at node 9 with a deflection value of 0.2555 m and the largest angular rotation occurs at node number 10, which is 0.0958 rad. By assuming the weight of the cantilever bar is ignored, the reaction at the clamped rod support is obtained equal to the magnitude of the load given at node 9 in the opposite direction to keep the rod prevent from falling, which is -100 N. The farer distance of nodal point from the end of the bar that is given the load then the smaller the deflection that occurs, including the angular rotation will also be smaller. The selection of beam materials, beam dimensions, beam installation methods and determination of the external load greatly determine the safety factor of the cantilever beam construction.
PERBANDINGAN STATUS KESUBURAN TANAH DI DUA DATARAN TINGGI: STUDI KASUS DESA DOULU (BERASTAGI) DAN DESA NALELA (TOBA) SIrait, Mareben; Sirait, Tania; Sahfitra, Angga Ade; Rannando, Rannando; Tarigan, Raudha Anggraini
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.1003

Abstract

This study aims to disseminate the soil fertility status of two types of agricultural land, namely shallot cultivation land in Doulu Village, Berastagi District, Karo Regency, and rice field land in Nalela Village, Porsea District, Toba Samosir Regency, North Sumatra Province. The research methods used include field surveys, random soil sampling, and laboratory analysis of soil physical and chemical properties, including pH, cation exchange capacity (CEC), base saturation (KB), organic C content, nitrogen (N), phosphorus (P), potassium (K), and other nutrients such as calcium (Ca) and magnesium (Mg). The results showed that the analysis of shallot land in Doulu Village had a moderate to low level, due to acidic pH, low levels of organic matter, nitrogen, and phosphorus, and suboptimal cation exchange capacity. Meanwhile, rice fields in Nalela Village showed very acidic pH, low to very low quality CEC and organic C, and low phosphorus and potassium content. Based on the land suitability evaluation, agricultural land in both areas is categorized in class S2 (quite suitable) to S3 (marginally suitable), which indicates the need for land management intervention. This study recommends the application of balanced fertilization, addition of organic matter, improvement of soil pH, and erosion management to improve soil fertility status and support the sustainability of agricultural production in both villages.
RANCANG BANGUN ALAT MONITORING KEMIRINGAN PADA LANTAI BERBASIS GOOGLE SHEETS Anggraeni, Aprilia Putri; Wisaksono, Arief; Falah, Agus Hayatal; Saputra, Dwi Hadidjaja Rasjid
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.1004

Abstract

Currently, the property sector—particularly residential housing—presents considerable business opportunities. A critical structural component of any residential building is the floor, which serves as the foundational surface for human activity such as walking, standing, and other daily operations. In some cases, floor surfaces may exhibit undetectable inclinations that could compromise structural integrity over time. To address this issue, the development of a technological system for detecting floor tilt is essential. This study proposes a real-time floor tilt monitoring system utilizing tilt and accelerometer sensors, integrated with Google Sheets for cloud-based data visualization and logging. Sensor data is transmitted automatically via an Internet of Things (IoT) platform, enabling continuous monitoring without manual intervention. The recorded data is organized and displayed in tabular form within Google Sheets to facilitate visual analysis and interpretation.The proposed system offers an efficient, scalable, and cost-effective solution for early detection of floor inclination and potential structural degradation. By providing real-time insights, it supports proactive building maintenance and enhances occupant safety by enabling timely responses to structural anomalies.
PENGARUH KONSENTRASI RAGI TERHADAP MUTU HEDONIK PRODUK KERIPIK TAPE UBI JALAR UNGU (Ipomoea batatas var. ayamurasaki) Rahmadini, Fathia; Kurnia, Pramuja Putra; Harahap, Edy Syahputra; Hidayati, Fitni; Putri, Kalasta Ayunda
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.1015

Abstract

Purple sweet potato (Ipomea batatas L.) is one type of food crop with high productivity and the main agricultural product in the Karo, Simalungun, Dairi and Toba regions. The utilization of purple sweet   potato as a processed food commodity has not been maximized so that innovation in processing various agricultural products is needed. One of the processed food products from purple sweet potato raw materials is tape. The purpose of this study was to develop innovations in tape products into purple sweet potato tape chips that are liked by consumers. The organoleptic panelist activities of the product were carried out by students and also the community. This study used a Factorial Completely Randomized Design with one factor studied, namely: yeast concentration factor (K) consisting of 4 treatment levels K1 = 0.5% yeast, K2 = 1% yeast, K3 = 1.5% yeast, K4 = 2% yeast. The parameters observed in this study were focused on the panelists' acceptance in terms of hedonic organoleptics, namely taste hedonic, color hedonic, aroma hedonic, and texture hedonic. The results showed that the panelists generally gave very good scores and both factors influenced the hedonic organoleptic values ??of taste, color hedonic, aroma hedonic and texture hedonic.
MONITORING PLTS BATTERY ENERGY STORAGE ON SALT PRODUCTION TOOLS Rayhan, Akbar; Jamaaluddin, Jamaaluddin; Ayuni, Shazana Dhiya; Syahrorini, Syamsudduha
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.916

Abstract

Indonesia, being on the equator, possesses significant solar energy potential with an average radiation intensity of 4.8 kWh/m² per day. This potential can be utilised for various sectors, including the salt production industry which requires a stable electricity supply. Solar Power Plant (PLTS) is a strategic alternative in increasing the efficiency of salt production, especially in the drying stage. This study aims to analyse the performance of the energy storage system in the solar power plant battery used in the salt production process. The research method involved measuring the voltage from the solar panel stored in the battery through three daily testing sessions. The test results showed that the highest voltage, 12.59 Volts, was reached in the morning and afternoon, while in the afternoon it decreased as the intensity of sunlight decreased. The results of this study show that solar power plants play an important role in maintaining a stable supply of electrical energy to support salt production. However, voltage fluctuations due to changes in sunlight intensity emphasise the importance of optimising the energy storage system. Therefore, the development of more efficient storage technologies is needed to increase the effectiveness of renewable energy-based salt production.
RHEUMATIC HEART DISEASE SCREENING USING HANDHELD ECHOCARDIOGRAPHY: A STUDY AMON`G JUNIOR HIGH SCHOOL STUDENTS IN INDONESIA Ardini, Tengku Winda; Muttaqien, Chairiza; Sitompul, Opim Salim; Hasan, Refli; Effendy, Elmeid; Rusda, Muhammad
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 13 No. 2 (2025): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v13i2.1007

Abstract

Considering the high burden of morbidity and mortality associated with Rheumatic Heart Disease (RHD) in Indonesia, there is increasing interest in assessing cost-effective screening modalities, particularly the application of handheld echocardiography. Our study aimed to determine the prevalence of Rheumatic Heart Disease (RHD) in Batu Bara, North Sumatra, Indonesia. Our descriptive observational study was carried out in the Batu Bara region of North Sumatra in May 2025. The study population comprised junior high school students aged 10 to 15 years from a selected school in Batu Bara. Data collection included sociodemographic variables, parental characteristics, environmental and household factors, anthropometric measurements, physical examination findings, auscultation results, and echocardiographic evaluations. All data were analyzed using descriptive statistical methods. A total of 190 children were assessed in this study, with a median age of 13 years, and females comprised 54.7% of the participants. Echocardiographic screening detected Rheumatic Heart Disease (RHD) in three participants, corresponding to a prevalence of 1.6%. Within our study population, the prevalence of RHD was 1.6%. Expansion of echocardiographic screening programs is warranted to comprehensively establish RHD prevalence, accurately evaluate disease burden, and facilitate earlier detection to mitigate adverse clinical outcomes.

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