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  • Comparison Analysis of Wind Patterns and Its Correlations to Temperature, Humidity and Rainfall in Coastal and Non-Coastal Areas

    Geographical location and topography determine the characteristics of atmospheric parameters in a location. This study aims to determine the comparison between wind patterns that occur in coastal and non-coastal...
    Aqasha Raechan Anam Indonesia , Fikri Asfahanif Indonesia , Veyqah Dwi Muthi'ah Indonesia , Alfi Dimas Pangedoan Indonesia , Giarno Giarno Indonesia
    Pages: 67-79 2023-03-30
    10.24036/eksakta/vol24-iss01/392
    482 359
  • Exploring Cosmological Dynamics: From FLRW Universe to Cosmic Microwave Background Fluctuations

    This study explores key aspects of cosmology, starting with the foundational FLRW equations that describe the universe's evolution, emphasizing its homogeneity and isotropy. We incorporate mass viscosity into these...
    Budiman Nasution Indonesia , Winsyahputra Ritonga Indonesia , Ruben Cornelius Siagian Indonesia , Veryyon Harahap Indonesia , Lulut Alfaris Indonesia , Aldi Cahya Muhammad Bangladesh , Nazish Laeiq India
    Pages: 500-512 2023-12-30
    10.24036/eksakta/vol23-iss04/427
    267 234
  • Water Quality Model in Jambi Province using Geographically Weighted Regression

    PDAM (Regional Water Supply Company) functions to serve the needs of many people's lives by providing quality water for the community. Based on Permenkes no. 492/menkes/per/iv/2010 clean water quality parameters,...
    Sherli Yuinanda Indonesia , Cut Multahadah Indonesia , Hasnaul Marisa Indonesia , Mohammad Abdullah Malaysia
    Pages: 436-452 2023-09-30
    10.24036/eksakta/vol23-iss03/378
    333 273
  • Physiological Aspects Identification of the Aloe Vera Grown at Sukoharjo and Wonogiri District, Central Java

    The aloe vera is known as an ornamental plant that can survive almost all elevations and has a myriad of benefits for humans. This plant can plant at various altitudes, including in the districts of Sukoharjo and...
    Ratna Dewi Eskundari Indonesia , Nur Rokhimah Hanik Indonesia , Sri Harsono Indonesia
    Pages: 82-86 2021-06-27
    10.24036/eksakta/vol22-iss2/238
    637 775
  • Hydrogeological Evaluation Based on Water Quality Parameters and Groundwater Level Conditions in Kolaka and Tangketada Basins, Southeast Sulawesi

    This study aims to evaluate the hydrogeological conditions of Pomalaa through analysis of groundwater flow patterns, groundwater level fluctuations, and water quality parameters. The methods used include geological...
    Muhammad Abdul Rahman Salim Indonesia , Dasapta Erwin Irawan Indonesia , Imam A. Sadisun Indonesia , Bonanza Herlambang Indonesia , Kurniawan Indonesia
    Pages: 530-548 2025-12-30
    10.24036/eksakta/vol26-iss04/623
    138 176
  • Generalized Additive Models for Modeling Pneumonia Cases in Toddlers in West Java based on the Penalized Spline Estimator

    Acute Respiratory Infections (ARI) are one of the causes of high mortality in the world, such as pneumonia in toddlers. Pneumonia cases in West Java are high compared to other provinces. In this study, pneumonia...
    Azkanul Wahyu Indonesia , Nurul Gusriani Indonesia , Kankan Parmikanti Indonesia
    Pages: 138-150 2024-06-30
    10.24036/eksakta/vol25-iss02/491
    257 347
  • Color Transitions in Tanjung-2 Chili Pepper at Green and Red Harvest Stages under Varying Growing Structures and Fertigation Levels

    Fruit color is a primary determinant of market acceptance for chili peppers ( Capsicum annuum L.). This study quantified the green-to-red color transition at harvest using the CIELAB system. The experiment had a...
    Meivie Tivalli Indonesia , Kusumiyati Kusumiyati Indonesia , Shazma Anwar Pakistan , Konain Zahra Maqbool Japan , Md Shazzadul Islam Bangladesh
    Pages: 101-119 2026-02-28
    10.24036/eksakta/vol27-iss01/658
    203 125
  • Computational Analysis of Iron Corrosion Inhibition by Compounds in Rimbang Leaf Extract (Solanum torvum) Using the DFT Method

    Iron is one of the most widely used metals in industry. This study was conducted on the performance of inhibitor compounds in rimbang leaf extract against iron corrosion based on several theoretical approaches. The...
    Qory Sidwa Jufri Indonesia , Emriadi Indonesia , Imelda Indonesia
    Pages: 424-435 2024-12-30
    10.24036/eksakta/vol25-iss04/548
    182 305
  • Ligand Based Pharmacophore Modelling, Virtual Screening, Molecular Docking, and ADMETOX of Natural Compounds as Antibiotic Candidates against Urinary Tract Infections (UTI)

    The use of antibiotic drugs requires close supervision that patients take antibiotics according to the rules. Irregular antibiotic use led to increased ADR cases (Antibiotic Drug-resistant). ADR is when an individual...
    Windy Dwininda Indonesia , Linda Erlina Indonesia , Rafika Indah Paramita Indonesia , Fadillah Fadillah Indonesia , Surya Dwira Indonesia , Jaka Fajar Fatriansyah Indonesia
    Pages: 193-206 2023-06-30
    10.24036/eksakta/vol24-iss02/404
    1304 364
  • Microwave-Synthesized Hydroxyapatite from Quail Eggshell for Pb(II) Removal

    Hydroxyapatite (HAp, Ca 10 (PO 4 ) 6 (OH) 2 ) is a primary constituent of bones and teeth. It has also been widely developed as a promising adsorbent for removing heavy metals. In this study, Pb(II) removal was...
    Matlal Fajri Alif Indonesia , Yulia Eka Putri Indonesia , Frisca Aulanny Indonesia
    Pages: 704-718 2026-08-30
    10.24036/eksakta/vol27-iss04/740
    123 142
  • Estimation of Phytoplankton Density in Waters Kampar River Kampar District

    The Kampar River is one of the rivers in the upper reaches that has caused pollution due to local communities such as excessive activity and gravel and sand mining. The purpose of this study was to determine the...
    Marta Dinata Indonesia , Al Khudri Sembiring Indonesia , Rahmat Ramadansur Indonesia
    Pages: 372-381 2024-09-30
    10.24036/eksakta/vol25-iss03/341
    301 273
  • Influence of Rhizobacteria and Seed Pruning on Plant Growth and Results Red Chili (Capsicum annum L.)

    This study aims to determine the effect of rhizobacteria and seed pruning on the growth and yield of red chilies. This research has been carried out in the Malvinas Delta permanent nursery, Padang Watershed...
    Zahanis Zahanis Indonesia , Fatimah Fatimah Indonesia , Devi Devi Indonesia
    Pages: 174-181 2021-06-27
    10.24036/eksakta/vol22-iss2/277
    326 308
  • The Effectiveness of Asystasia gangetica (L.) T. Anderson Leaf Extract as a Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium

     The inhibition effectiveness of the extract in hydrochloric acid solution was analyzed using the weight loss method at 30 °C for 7 hours to determine the corrosion rate and inhibition efficiency. The active...
    Karina Ventika Sari Indonesia , Emriadi Indonesia , Yeni Stiadi Indonesia
    Pages: 549-560 2025-12-30
    10.24036/eksakta/vol26-iss04/636
    158 174
  • Investigation Activities of Vitamin D, Interleukin-17A, and Alkaline Phosphatase as Biological Markers in Asthma

    Inflammation in asthma occurs due to the activation of various cells that produce proinflammatory cytokines. Corticosteroid treatment can affect bone formation, impacting vitamin D levels and alkaline phosphatase...
    James Perdinan Simanjuntak Indonesia , Siti Sakdiah Indonesia , Fardiah Tilawati Sitanggang Indonesia , Eva Ayu Maharani Indonesia
    Pages: 154-164 2023-06-30
    10.24036/eksakta/vol24-iss02/359
    258 249
  • VES-GIS Application for Groundwater Potential and Aquifer Identification in Talang Kelapa District, Banyuasin, South Sumatra

    Talang Kelapa District faces serious challenges regarding a high risk of groundwater drilling failure due to extreme lithological heterogeneity in the Gumai Formation. This study aims to identify aquifer geometry...
    Arif Muhammad Indonesia , Andjarila Nurryska Indonesia , Rizka Indonesia
    Pages: 620-636 2026-08-30
    10.24036/eksakta/vol27-iss04/713
    101 91
  • Growth Studies of Cucumber (Cucumis sativus L.) Varieties Plants by Bamboo (Dendrocalamus asper) Flour Organic Fertilizer

    The aim of the study was to analyze the interaction between the concentration of bamboo shoots of liquid organic fertilizer and cucumber plant varieties on the growth and yield of cucumber plants. This experiment...
    Zahanis Zahanis Indonesia , Milda Ernita Indonesia , Evi Kardila Indonesia , Welly Herman Indonesia , Elara Resigia Indonesia
    Pages: 61-72 2021-03-27
    10.24036/eksakta/vol22-iss1/259
    558 459
  • Study on Color Properties of Auricularia auricula-judae (Bull.) Quél. Affected by Nano Edible Coatings, Packaging Types, and Storage Temperatures

    Wood ear mushroom is a traditional edible and medicinal mushroom widely consumed as a food supplement. The color of the fruit body is a crucial indicator of commercial quality that influences consumer purchasing...
    Kusumiyati Kusumiyati Indonesia , Aulia Afifah Rachman Indonesia , Jajang Sauman Hamdani Indonesia
    Pages: 355-370 2025-09-30
    10.24036/eksakta/vol26-iss03/614
    396 182
  • Analysis of Fault Plane and Distribution of Coulomb Stress Changes of the Mw 7.8 Earthquake Southwest of Sumatra

    The Mw 7.8 earthquake that occurred southwest of Sumatra on March 2, 2016, at a depth of 24 km represents a major seismic event within the Sunda subduction zone, significantly influencing regional stress conditions....
    Gabriela Gabriela Indonesia , Kelly Lasofia Br Girsang Indonesia , Rizki Wulandari Indonesia , Yudha Styawan Indonesia
    Pages: 360-373 2026-06-30
    10.24036/eksakta/vol27-iss03/701
    103 113
  • The Effect of Benzyl Amino Purine (BAP) On Potato (Solanum tuberosum L.) Axillary Buds Micropropagation

    Potato ( Solanum tuberosum L.) production in Indonesia increased by 4.21% in 2022 compared to the previous year, but this production is still low by international standards. This is caused by low quality and...
    Putri Anugrah Maulidya Indonesia , Yulita Nurchayati Indonesia , Nintya Setiari Indonesia
    Pages: 81-90 2024-03-30
    10.24036/eksakta/vol25-iss01/480
    339 328
  • A Solution of Nonlinear Boundary Value Problem of System With Rectangular Coefficients

    This paper discusses a nonlinear boundary value problem of system with rectangular coefficients of the form  with boundary conditions of the form  A(t)x' + B(t)x = f(t,x) and  which is  is a real...
    Badrulfalah Badrulfalah Indonesia , Iis Irianingsih Indonesia , Khafsah Joebaedi Indonesia
    Pages: 24-28 2020-04-30
    10.24036/eksakta/vol21-iss1/217
    429 378
  • Non-Destructive Evaluation Quality of Oil Palm Fresh Fruit Bunch (FFB) (Elaeis guineensis Jacq.) Using Thermal Imaging in the Grading Process

    Determining the quality of oil palm Fresh Fruit Bunches (FFB) quickly and accurately is very important in the grading process to ensure the quality of production results and the efficiency of the post-harvest...
    Ardillah Anggraini Sirtin Indonesia , Muhammad Makky Indonesia , Santosa Santosa Indonesia , Dinah Cherie Indonesia
    Pages: 312-328 2025-09-30
    10.24036/eksakta/vol26-iss03/611
    284 277
  • Inert Gas Axial Flow Analysis on Thermal System with Natural Convection Condition

    The Fukushima nuclear accident in 2011 became the basis for consideration of the use of gas as a coolant in nuclear reactors. This is because the convection rate of gas flow in the cooling channel can occur naturally...
    Rio Anshari Indonesia , Mairizwan Mairizwan Indonesia , Fandi Oktasendra United Kingdom , Debi Rianto United Kingdom , Zulhendra Zulhendra Indonesia
    Pages: 1-8 2023-03-30
    10.24036/eksakta/vol24-iss01/338
    314 288
  • The Effect of Adding Ruku-Ruku Plant Essential Oil (Ocimumm tenuiflorum L.) as a Source of Antioxidants in Lip Balm Preparations

    This study aims to evaluate the effect of adding ruku-ruku (Ocimum tenuiflorum) essential oil on the characteristics and antioxidant activity of lip balm, as well as to determine the best formulation. The research...
    Diana Sylvi Indonesia , Tuty Anggraini Indonesia , Anggun Anggun Indonesia
    Pages: 316-334 2026-06-30
    10.24036/eksakta/vol27-iss03/686
    136 112
  • Some Properties of Green’s Matrix of Nonlinear Boundary Value Problem of First Order Differential

    This paper discusses Green’s matrix of nonlinear boundary value problem of first-order differential system with rectangular coeffisients, especially about its properties. In this case, the differential equation of...
    Badrulfalah Badrulfalah Indonesia , Dwi Susanti Indonesia , Kafsah Joebaedi Indonesia , Robin Kosasih Indonesia
    Pages: 41-47 2019-04-28
    10.24036/eksakta/vol20-iss1/173
    627 602
  • 6-Gingerol Slightly Reduces Hepatic Endoplasmic Reticulum Stress Markers in Rats with High-Fat, High-Fructose Diet-Induced Metabolic Syndrome

    Metabolic syndrome (MetS) is linked to hepatic endoplasmic reticulum (ER) stress. This study evaluated 6-gingerol’s potential to alleviate ER stress in a high-fat high-fructose (HFHF)-induced MetS rat model. Male...
    Nouman Ahmad Indonesia , Syarifah Dewi Indonesia , Vivian Soetikno Indonesia
    Pages: 102-113 2025-03-30
    10.24036/eksakta/vol26-iss01/581
    357 287
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