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All Journal Jurnal EnviScience (Environment Science) APTEK Journal of Clean Technology Jurnal Abdimas Jurnal Arsitektur ARCADE Canopy: Journal of Architecture Sainteknol : Jurnal Sains dan Teknologi
Fisa Savanti
Universitas Negeri Semarang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Public Health Social Sciences Other

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Estimasi Land Subsidence Dengan Metode Differential Interferometry Synthetic Aperture Radar (Dinsar) Di Pantura Kota Semarang Alfita Ilfiyaningrum; Rini Kusumawardani; Fisa Savanti; Bambang Setyohadi Kuswarna Putra; Nur Aida
Aptek Jurnal Apliksai Teknologi (APTEK): Volume 16, No. 01, Desember 2023
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/aptek.v16i1.2193

Abstract

Land subsidence is a natural phenomenon that occurs due to changes in the position of an object in the vertical direction. There are several factors that cause this phenomenon, including excessive use of ground water, heavy surface loads, and changes in land cover that are not in accordance with the carrying capacity and carrying capacity of the soil. Considering the importance of this phenomenon to human life in general, and infrastructure in particular, regular monitoring must be carried out to determine the magnitude of land subsidence. Monitoring the occurrence of land subsidence can be done using the DINSAR method. This method uses phase differences in remote sensing images from the Sentinel 1 satellite to determine changes in the height of a location from two image data collection times. Data processing with GIS support can be carried out to obtain differences in displacement or movement of the ground surface during the two data collection times. Measuring land subsidence value in the Pantura area uses image data from January 2022 to January 2023. From this research, the maximum value of land subsidence is 2.5 cm in 1 month, 5 cm in 3 months, and 7.5 cm in 1 year. The linear function of land subsidence [y] according the data is y = 4.8058t + 2.8641, where t is the time parameter. With this function, the estimated land subsidence of Pantura Kota Semarang in two years is 12.48 cm.
Identifying Indoor Air Quality: Ventilation in Healthcare Facilities Semarang Savanti, Fisa; Wibowo, Ardiyan Adhi; Pratiwi, Isna; Putra, Bambang Setyohadi Kuswarna
Jurnal EnviScience (Environment Science) Vol. 8 No. 1 (2024): Environmental pollution on Human Health and Environment, Management Technology
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/jev.v8i1.702

Abstract

A building requires good ventilation planning, especially for health facility buildings. Ventilation plays a role in supplying clean air and creating good indoor air quality. This study identifies the air change rate that improves indoor air quality in health facility buildings in tropical areas. Direct field measurements were conducted in this study and then analyzed based on the appropriate recommendation standards. The results of this study show that some variables still need to meet the recommendation standards in meeting the requirements of good air quality. This proves that ventilation has an essential role in air conditioning in the room, creating clean and healthy air. This research provides an overview that ventilation needs to be carefully designed to achieve good air quality, so it is expected to reduce contaminants in the air.
Tenun Fashion Hub: Pusat Inovasi Mode Berbasis Circular System di Jakarta Selatan dengan Pendekatan Arsitektur Ekspresionisme Anissa Fajriani; Fisa Savanti; Dimas Wicaksono
Canopy: Journal of Architecture Vol. 14 No. 1 (2025): Canopy Journal, July 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/qwvr7m62

Abstract

Fashion serves as a medium of self-expression and identity (Kadek & Diantari, 2021), yet rapid industrialization has accelerated fast fashion cycles that generate 2.3 million tons of textile waste annually in Indonesia 12% of total household waste (waste4change, 2023). As Jakarta's fashion epicenter, South Jakarta hosts prestigious events like Jakarta Fashion Week and houses traditional weaving industries (Soe Jakarta, CTI), but lacks dedicated infrastructure for sustainable innovation. Responding to this gap, the Tenun Fashion Hub integrates circular economy principles extending product lifecycles through recycling and repair with revitalization of traditional weaving as a slow fashion alternative (Ummah, 2019; SMB Museum, 2019). The project adopts expressionist architecture to translate weaving motifs into kinetic facades and organic forms, symbolizing cultural sustainability while creating an iconic landmark in this dynamic district. Functioning as a hybrid space, it combines: (1) a production center for upcycled textiles; (2) collaborative studios for designers and artisans to preserve Indonesia’s weaving heritage (Tengku Ryo Rizqan, 2019); and (3) educational workshops promoting eco-friendly techniques. By merging closed-loop systems with cultural narratives, the hub establishes a prototype for sustainable urban fashion districts that combat environmental damage while empowering local craftsmanship.
KAJIAN KINERJA PENGHAWAAN ALAMI PADA RUMAH TINGGAL TROPIS DENGAN SIMULASI COMPUTATIONAL FLUID DYNAMICS (STUDI KASUS: RUMAH HEINZ FRICK SEMARANG) Hari Utama; Fisa Savanti
Jurnal Arsitektur ARCADE Vol 9 No 2 (2025): Jurnal Arsitektur ARCADE Juni 2025
Publisher : Prodi Arsitektur UNIVERSITAS KEBANGSAAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31848/arcade.v9i2.4125

Abstract

Abstract: Residential buildings play a vital role in daily human life as spaces for rest and personal development. However, the trend of mass housing development with uniform types and designs often overlooks environmental considerations. In fact, in Indonesia’s humid tropical climate—characterized by warm temperatures, high humidity, and low wind speeds—residential houses must be carefully designed to ensure thermal comfort for occupants. One key factor is the performance of natural ventilation, which ensures adequate air exchange within the building. This study adopts manual measurement techniques and computer simulations using Computational Fluid Dynamics (CFD) to assess the natural ventilation performance of a residential building in a humid tropical climate, with the Heinz Frick House in Semarang as the case study. Three aspects of natural ventilation performance are examined: (i) comparison between opening dimensions and façade area based on applicable standards; (ii) analysis of indoor airflow velocity in relation to comfort thresholds; and (iii) spatial distribution of airflow to identify comfort zones. The results show that the natural ventilation performance of the Heinz Frick House is relatively good. Nevertheless, several design adjustments, particularly regarding building openings, are necessary to further optimize ventilation performance. Keyword: Airflow, Building Performance, Computational Fluid Dynamics, Cross Ventilation, Natural Ventilation Abstrak: Rumah tinggal merupakan jenis bangunan yang sangat penting bagi kehidupan manusia sehari-hari karena berfungsi sebagai tempat istirahat dan mengembangkan diri. Tren pembangunan rumah massal dengan tipe dan desain yang serupa seringkali mengabaikan pertimbangan lingkungan. Padahal sebagai sebuah bangunan di iklim tropis lembab Indonesia dengan karakter lingkungan yang bersuhu hangat, kelembaban udara tinggi, dan kecepatan udara rendah, rumah harus didesain sedemikian rupa supaya dapat menciptakan kenyamanan bagi penghuninya. Salah satu faktor yang penting adalah terkait kinerja penghawaan alami demi memastikan terjadinya pertukaran udara yang cukup pada bangunan. Penelitian ini dilakukan menggunakan metode pengukuran manual serta simulasi komputer terkait Computational Fluid Dynamics (CFD). Penelitian ini ingin melakukan kajian kinerja penghawaan alami pada bangunan rumah tinggal iklim tropis lembab dengan studi kasus Rumah Heinz Frick Semarang. Terdapat tiga kajian analisis data terkait kinerja penghawaan alami yang meliputi: (i) Membandingkan dimensi bukaan terhadap luas fasad sesuai standar; (ii) Analisis kecepatan aliran udara di dalam ruang berdasarkan standar; dan (iii) Profil persebaran aliran udara yang nyaman dalam ruang. Hasil penelitian menunjukkan bahwa kinerja penghawaan alami Rumah Heinz Frick Semarang tergolong cukup baik. Namun perlu dilakukan beberapa perbaikan desain, terutama terkait bukaan bangunan, supaya kinerja penghawaan alami bangunan menjadi lebih optimal. Kata Kunci: Aliran Udara, Computational Fluid Dynamics, Kinerja Bangunan, Penghawaan Alami, Ventilasi Silang  
Performance of Natural Ventilation in Residential Buildings under Different Opening Conditions Fisa Savanti; Hari Utama; Hanif Ardhiansyah
Sainteknol : Jurnal Sains dan Teknologi Vol. 23 No. 2 (2025): December 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v23i2.44731

Abstract

Natural ventilation is widely applied in tropical residential buildings to improve indoor environmental quality and reduce cooling energy demand. However, increasing opening size does not always proportionally enhance ventilation performance. This study aims to experimentally determine the relationship between inlet opening variation and natural ventilation performance in a residential test room (6.0 m × 2.5 m × 3.5 m; 52.5 m³) oriented along the Southwest–Northeast axis. The investigation was conducted by measuring variations in indoor air velocity, temperature, relative humidity, and estimating the air change rate (ACH) under different inlet opening conditions. The inlet door opening was varied from 20% to 100%, while the outlet door remained fully open. Results indicate a non-linear relationship between opening variation and ventilation performance. Indoor air velocity increased from 0.09 m s⁻¹ at 20% opening to a maximum of 0.11 m s⁻¹ at 60%, then decreased at larger openings. ACH followed a similar trend, peaking at the intermediate configuration. Temperature differences remained minimal, confirming the dominance of wind-driven airflow, while relative humidity varied with airflow distribution and dilution effects. The findings suggest that moderate inlet openings may provide more efficient ventilation than fully open configurations in tropical residential buildings.
Physicochemical Characterization and Bioactive Compound Profiling of Oil Palm Leaf (Elaeis guineensis Jacq.) Extract for Green Nutraceutical Effervescent Tablets Hanif Ardhiansyah; Fisa Savanti; Meci Aryani Saputri; Khusnul Khairul Nisa
Journal of Clean Technology Vol. 3 No. 1 (2026): February 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/joct.v3i1.44909

Abstract

The valorisation of oil palm leaf (Elaeis guineensis Jacq.) agricultural waste into high-value nutraceutical products embodies circular economy principles within the world's largest palm oil producing nation. Oil palm leaves, currently discarded across 16.83 million hectares of Indonesian plantations, harbour diverse antioxidant, antimicrobial, and anti-inflammatory bioactive compounds. This study presents a comprehensive, multi-technique physicochemical and chemical characterisation of palm leaf ethanol extract and its optimal effervescent tablet formulation (F1, acid:base = 1:1) relevant to clean technology nutraceutical development. The palm leaf extract was characterised by X-Ray Diffraction (XRD) nanostructural analysis using the Debye-Scherrer equation, Fourier Transform Infrared Spectroscopy (FTIR), and Gas Chromatography-Mass Spectrometry (GC-MS). Antioxidant stability was assessed by the DPPH radical scavenging assay over four weeks (n = 3). XRD analysis revealed nanoparticulate crystal sizes of 58.91 nm (granules) and 56.38 nm (tablets), with predominantly amorphous phase morphology preserved through pharmaceutical processing. FTIR confirmed phenolic O–H stretching (3420 cm⁻¹), fatty acid C–H chains (2920, 2851 cm⁻¹), ester carbonyl (1740 cm⁻¹), and aromatic C=C (1633 cm⁻¹), validating chemical composition. GC-MS identified 25 peaks with 19 characterised compounds; dominant bioactives include n-hexadecanoic acid (11.80%), combined heneicosane peaks (31.14%), hexadecanoic acid 2-hydroxy ester (10.39%), and heptadecene-(8)-carbonic acid-(1) (10.15%), with documented antioxidant, antimicrobial, and antiproliferative activities. Formulation F1 maintained IC50 = 21.22 mg/L unchanged over four weeks. Pharmaceutical processing preserves the nanostructural integrity and bioactive composition of palm leaf extract. The research validates a clean technology circular economy pathway converting palm leaf waste—currently 91.5 million tonnes dry weight annually in Indonesia—into stable, bioavailability-enhanced nutraceutical ingredients.
Technical Assistance and Renovation Planning, Petompon Sub-district Hall, Gajahmungkur District, Semarang City Eko Budi Santoso; Diharto; Wiwit Setyowati; Ardiyan Adhi Wibowo; Fisa Savanti; Fahrudin Fahrudin; Vicky Rosyid Hidayat; Salwa Nur Fadilah; Sintia Putri Maulita
Jurnal Abdimas Vol. 28 No. 1 (2024): June 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/vxez7h84

Abstract

This community service activity is carried out by identifying and inventorying problems with sub-district officials, discussing alternative solutions to problem-solving until the solution is selected, and then making pre-designed drawings, which are then carried out by presenting the results and submitting planning documents. After the pre-design drawings have been discussed and mutually agreed upon, a final renovation design and the required budget plan are created. The results of this Community Service are a Renovation Planning Document for the Petompon Sub-district Hall, which will guide government institutions in building and developing the building.
Co-Authors Alfita Ilfiyaningrum Anissa Fajriani Ardiyan Adhi Wibowo Bambang Setyohadi Kuswarna Putra Bambang Setyohadi Kuswarna Putra, Bambang Setyohadi Kuswarna Diharto Dimas Wicaksono Eko Budi Santoso Erni Setyowati Fahrudin Fahrudin Gagoek Hardiman Hanif Ardhiansyah Hari Utama Hari Utama Isna Pratiwi, Isna Khusnul Khairul Nisa Meci Aryani Saputri Nur Aida Rini Kusumawardani, Rini Salwa Nur Fadilah Sintia Putri Maulita Vicky Rosyid Hidayat Wibowo, Ardiyan Adhi Wiwit Setyowati