Journal of Science and Application Technology (JSAT - Institut Teknologi Sumatera)
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Rancang Bangun Sistem Kendali Pada Sistem Pemadam Kebakaran Otomatis Gedung Perkuliahan Berbasis PLC (SPALIC)
Full text linkKebakaran merupakan bahaya yang diidentifikasi akibat adanya api dan pembakaran yang tidak terkendali, sehingga menghasilkan asap dan gas berbahaya itulah sebabnya dapat mengancam aktivitas manusia, dan juga dapat menyebabkan hilangnya nyawa dan kehancuran harta benda. Untuk mengurangi risiko tersebut, dibutuhkan sistem kendali pemadam kebakaran otomatis yang mampu mengambil keputusan secara cepat dan bekerja secara andal dalam kondisi darurat. Penelitian ini membahas perancangan dan implementasi sistem kendali berbasis Programmable Logic Controller (PLC) pada Sistem Pemadam Kebakaran Otomatis Gedung perkuliahan berbasis PLC (SPALIC). Sistem terdiri dari sensor suhu, sensor asap, alarm, pompa utama, pompa backup, valve, dan sprinkler yang terintegrasi secara otomatis. Ladder diagram yang dirancang menjalankan tiga bagian utama operasi, yaitu: konversi data dari integer ke bilangan real, mengubah dari nilai analog ke nilai real, serta logika utama untuk mengontrol aktivasi pompa dan alarm. Hasil pengujian menunjukkan bahwa sistem mampu mengaktifkan pompa utama secara otomatis dalam waktu kurang dari 1 detik saat terdeteksi suhu ≥ 40°C dan asap ≥ 80 ppm, serta mengaktifkan sprinkler dengan jeda sekitar 1 detik setelah pompa menyala. Alarm juga aktif selama 5 detik menggunakan fungsi timer. Pompa cadangan berhasil meningkatkan tekanan hingga 21,90% saat tekanan turun. Sistem menunjukkan performa kendali yang andal, responsif, dan efisien, sehingga layak diterapkan sebagai solusi mitigasi kebakaran otomatis di lingkungan gedung perkuliahan
Bioinformatics analysis of andrographolide as an antisquamous cell carcinoma of the cervix
Full text linkAndrographolide, a natural substance isolated from Andrographis paniculata showing anticancer activity can be tested in silico to analyze its target in treatment of squamous cell carcinoma of the cervix. Objective of this study is dentifying andrographolide’s therapeutic target in treatment of squamous cell carcinoma of the cervix. Bioinformatics analysis was done by intersecting genes dysregulated in cancer and genes regulated by andrographolide. Potential therapeutic target genes activity related to cancer was analyzed and probable target genes were docked with andrographolide. Eighty three potential therapeutic target genes were identified and gene ontology and KEGG pathway analysis revealed their role in cancer. Target genes were further selected, resulted in three genes probable to be docked with andrographolide. Binding energy in kcal/mol between andrographolide and MAPK3, MMP9 and JAK2 respectively were -9.954, -9.470 and -8.482. Meanwhile, positive control binding energy were -10.050, -9.459 and -9.422. Andrographolide is shown to interact with a few key amino acid residues, such as Ile48 and Tyr53 in MAPK3, His230, His236, Pro246 and 247 in MMP9 and Leu983 in JAK2. In conclusion, MAPK3, MMP9 and JAK2 are potential therapeutic target genes for andrographolide within the treatment of squamous cell carcinoma of the cervix
The Development of a Procedure Model for Improving Land Data Quality (Case Study at the Land Office of Tulang Bawang Regency)
Full text linkAccurate and up-to-date land data is essential for effective planning, development, and decision/policy making by the Ministry of Agrarian Affairs and Spatial Planning/National Land Agency. However, land data does not yet have full data accuracy and reliability, thus weakening the usefulness of the land data itself. This study aims to develop a procedural model to improve the quality of land data. This study began by conducting a data classification method, namely conducting a comprehensive inventory of data in the database and archives of land book documents along with measurement letters. Based on the inventory results, a data adjustment method was then done by aligning data between the database and the archives of land book documents and measurement letters. Finally, a method of improving the quality of land data (data quality improvement) was carried out by improving land data to be better. As a form of supervisory control/monitoring, data verification was carried out on data that had been improved using purposive sampling. The results of this study indicate that the systematic application of this method can produce land data with good data accuracy and reliability. Improving the quality of land data results in complete and accurate mapping, and higher data accuracy, although in one village statistically it has not shown positive data, but with the improvement in the quality of land data, it has increased the accuracy of high and detailed data, as well as increased transparency and accountability to the community
Establishment and Affirmation of Village Boundaries in Rancabali District, Bandung Regency Based on Ministerial Regulation No. 45 of 2016 with the Principle of Contradictoire Delimitatie
Full text linkThe boundary village is a parapet government administration of the region inter-villages which is a series of coordinates to which points are on the surface of the earth. This study examines the application of the Minister of Home Affairs Regulation Number 45 of 2016 concerning the determination and affirmation of village boundaries in Rancabali Sub-district, Bandung District, West Java Province, Indonesia. The Rancabali sub-district consists of five villages whose boundaries must be affirmed and defined. According to the Minister of Home Affairs Regulation Number 45 of 2016 in the determination and affirmation of village boundaries, it is defined as administrative boundaries inter-villages that are juridical. This study aims to determine and confirm village boundaries based on the methodology contained in Minister of Home Affairs Regulations number 45 of 2016 by producing the village's administrative boundaries from the results of cartometric technical agreements. The data of this study were sourced from village boundary data in a participatory manner by villages in Rancabali Sub District using cartometrics. Because the Minister of Home Affairs Regulation Number 45 of 2016 stipulates that the determination and affirmation of regional boundaries are carried out cartometrically so that the application of this method needs to be carried out on the determination of village boundaries. The results of this research resulted in technical agreements and maps of village/kelurahan administrative boundaries in Rancabali District. In the technical agreement activities carried out, it was possible to identify the boundaries between villages/kelurahan in Sukaresmi Village, the maps of Indragiri Village and Cipelah Village resulted in an agreement. Patengan Village and Alamenda Village still have areas where they disagree
Pengukuran Preferensi Penggunaan Tangan pada Mahasiswa Biologi Angkatan 2021 di Institut Teknologi Sumatera
Full text linkHandedness atau preferensi penggunaan tangan dalam aktivitas sehari-hari terbagi menjadi dua kategori utama, yaitu dominan tangan kanan (right-handed) dan dominan tangan kiri (left-handed). Faktor yang memengaruhi handedness meliputi aspek genetik, kebiasaan, serta faktor biologis lainnya, yang juga berkontribusi terhadap kekuatan tangan dan tingkat kecepatan serta ketelitian dalam melakukan suatu tugas. Penelitian ini bertujuan untuk menganalisis pengaruh handedness terhadap kekuatan tangan (power grip) dan kecepatan/ketelitian tangan (precision grip). Penelitian ini melibatkan 36 mahasiswa Biologi angkatan 2021 Institut Teknologi Sumatera dengan beragam jenis kelamin, latar belakang etnis, dan usia. Data dikumpulkan melalui kuesioner serta pengukuran langsung menggunakan hand grip dynamometer untuk mengukur kekuatan tangan dan permainan berbasis waktu untuk mengukur kecepatan serta ketelitian tangan. Hasil penelitian menunjukkan bahwa mayoritas responden memiliki dominansi tangan kanan, dengan hanya satu responden perempuan berusia 20 tahun yang kidal. Pengukuran power grip menunjukkan bahwa baik laki-laki maupun perempuan memiliki dominansi kekuatan tangan pada tangan kanan. Namun, pada precision grip, preferensi tangan dominan bervariasi: laki-laki cenderung lebih dominan menggunakan tangan kiri, sedangkan perempuan lebih dominan menggunakan tangan kanan, meskipun terdapat satu responden perempuan kidal. Hasil ini menunjukkan bahwa preferensi penggunaan tangan dipengaruhi oleh kombinasi faktor jenis kelamin dan aktivitas harian yang berkontribusi terhadap perbedaan dalam kekuatan serta ketelitian tangan antara individu
FEASIBILITY ANALYSIS OF ESTABLISHING A SHOWER GEL MANUFACTURING FACILITY IN KETAPANG, SOUTH LAMPUNG
Full text linkThe cosmetics industry has been experiencing rapid growth, driven by increasing consumer awareness of personal hygiene and self-care. Among personal care products, shower gels have gained significant market traction due to their convenience and perceived hygiene benefits compared to conventional bar soaps. This study evaluates the feasibility of establishing a shower gel manufacturing facility in Ketapang, South Lampung, by assessing key factors such as market potential, technical viability, financial sustainability, and regulatory compliance. The global shower gel market is projected to expand at a Compound Annual Growth Rate (CAGR) of 5.47%, reaching an estimated value of USD 70.88 billion by 2031. This trend is reflected in Indonesia, where demand for liquid personal care products has been steadily rising due to shifts in consumer lifestyles and increased disposable incomes. Despite the promising market outlook, the domestic cosmetics manufacturing sector faces challenges such as dependence on imported raw materials, supply chain inefficiencies, and limited local production capacity. This study examines whether localizing production in Ketapang, a region with access to natural resources and supportive industrial policies, can offer a competitive advantage.
The research employs a feasibility study framework incorporating market analysis, technical assessment, financial modeling, and non-technical considerations. The financial analysis reveals that with an estimated production of 5,000 units per month, the facility is projected to generate IDR 523.2 million in revenue. The calculated cost of goods sold (HPP) per unit is IDR 87,204.86, with a selling price set at IDR 104,645.83 to maintain a 20% profit margin. Break-even analysis indicates that the facility must achieve a monthly sales volume of at least 7,500 units to cover all costs. The return on investment (ROI) is projected at 10.12%, with an estimated payback period of 9.88 years. The study also highlights regulatory requirements, including compliance with BPOM (Indonesian Food and Drug Authority) standards, Good Manufacturing Practices (GMP), and environmental sustainability protocols.
Findings suggest that while the venture is financially and operationally viable, achieving profitability requires strategic interventions. These include securing local raw materials to reduce cost dependencies, optimizing production processes, implementing marketing strategies to increase brand competitiveness, and engaging policymakers for potential fiscal incentives. Overall, the establishment of a shower gel manufacturing facility in Ketapang presents a strong opportunity to tap into Indonesia's growing cosmetics sector while contributing to regional economic development
Quantitative Performance Analysis of Spring-Mass-Damper Control Systems: A Comparative Implementation in Python and R
Full text linkThe numerical simulation of control of spring-mass-damper (SMD) systems offer critical insights into dynamical systems and computational methodologies. This study provides a comprehensive comparative analysis of implementing SMD systems across two prominent open-source scientific computing platforms: Python and R. By examining both open-loop and closed-loop system configurations, the research investigates the computational performance, numerical accuracy, and implementation characteristics of these platforms. Utilizing an idealized one-dimensional SMD system with a Proportional-Integral-Derivative (PID) controller, the study conducted extensive numerical simulations and statistical performance analyses. Results revealed Python's significant advantages in execution speed, achieving up to 63.57% reduction in runtime for controlled system simulations, while R demonstrated superior consistency in execution and memory usage. The controlled system demonstrated exceptional performance, with a final position error of merely 0.4% and enhanced damping characteristics. This work not only bridges theoretical stability analysis with empirical performance insights but also promotes reproducibility and transparency in computational dynamics research by leveraging open-source platforms
The Effect of Sorghum Juice Concentration (Sorghum bicolor L.) on Yogurt Characteristics
No full textYogurt is a derivative product of milk that undergoes a fermentation process aided by bacteria during production. Various types of bacteria, such as Lactobacillus bulgaricus and Streptococcus thermophilus, are utilized in the fermentation process. Sorghum holds numerous health benefits, including contributing to the prevention of heart disease, obesity, hypertension, maintaining blood sugar levels, and preventing colorectal cancer. Additionally, sorghum contains resistant starch and oligosaccharides that are resistant to digestion by the human body, making it suitable for use in synbiotic beverages. The research aimed to analyzed the influence of different concentrations of sorghum extract on the characteristics of yogurt, including chemistry and microbiology aspects. The results of the ANOVA tests for each parameter were found to be statistically significant and markedly different. Titration of total acidity, total dissolved solids, viscosity, and total lactic acid bacteria increased with the addition of sorghum extract
Struktur sekretori dan kandungan histokimia pada tumbuhan obat dari famili Annonaceae, Lamiaceae, Lythraceae, dan Myrtaceae
Full text linkThe Itera Botanical Garden houses a diverse collection of plants with potential as sources of active pharmaceutical compounds. This study aimed to investigate the secretory structures and histochemical properties of leaves from several plant species belonging to the families Annonaceae (Orophea enneandra), Lamiaceae (Premna oblongata and Premna parviflora), Lythraceae (Lagerstroemia subcostata), and Myrtaceae (Syzygium aqueum) found in the garden. Observations of the secretory structures were conducted using paradermal and transverse preparations stained with safranin. Additionally, histochemical tests were performed to detect the presence of alkaloids, phenols, flavonoids, tannins, and terpenoids using specific reagents and observed under a microscope. The results revealed various plant tissues functioning as secretory structures. Histochemical analysis indicated the presence of secondary metabolites, including alkaloids, phenols, flavonoids, tannins, and terpenoids, as evidenced by color changes during observation. The storage sites of these secondary metabolites varied across species: Orophea enneandra stored metabolites in the epidermis and mesophyll; Premna oblongata and Premna parviflora in glandular hairs; Lagerstroemia subcostata in the epidermis and mesophyll; and Syzygium aqueum in the epidermis. Specifically, in Syzygium aqueum, alkaloids, phenols, flavonoids, and tannins were found in the mesophyll, while terpenoids were stored in oil cells. The primary secretory structures in these plants were identified as glandular hairs and oil cells
Pengenalan Internet of Thing pada anak-anak Panti Asuhan Tiara Putri Korpri
No full textThe purpose of this community service activity is to introduce the Internet of Things to children, particularly those in orphanages. The extraordinary development of digital communication technology offers significant positive impacts when properly understood. The method implemented is a knowledge transfer approach, which includes lectures and dialogues, along with examples of commonly used applications. The evaluation was conducted by dividing the participants into two groups: children and teenagers. For the children, the evaluation method involved a question-and-answer session with the success parameter being the number of participants raising their hands. For the teenagers, a pre-test and post-test consisting of multiple-choice questions were administered. The results were quite remarkable, with the success rate for the children reaching 62.5% and the teenagers nearly 88%, proving that the material was very well absorbed