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PERBEDAAN AKTIVITAS ANTIOKSIDAN DAUN WARU LAUT (Hibiscus tiliaceus L.) DAN KULIT BUAH MANGGIS (Garcinia Mangostana L.) MENGGUNAKAN METODE DPPH
Jurnal Inovasi Teknik Kimia
Vol 10
, No 2
(2025)
Free radicals are the result of normal metabolism in the form of reactive oxygen compounds that have unpaired electrons and tend to be unstable. Free radicals can cause skin aging and can cause other effects such as skin cancer, therefore the role of antioxidants is very necessary for skin health. Sources of antioxidants can be obtained from natural ingredients, namely sea waru leaves (Hibiscus tiliaceus L.) and mangosteen rind (Garcinia Mangostana L.). Sea waru leaves contain alkaloids, flavono...
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The Effectiveness of Using Smartphone-Based Phyphox in Field Practice Tilt to Improve Students' Creative Thinking Skills
Rusdin, Muhammad Epi
; Prasetyo, Erwin
; Anwar, Zaina
; Pujianti Bejahida Donuata
; Nurfadilah
; Farizi, Zakaria Al
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The use of technology is a solution to overcome problems in physics learning. This study aims to determine the effectiveness of using Smartphone-based Phyphox in improving students' creative thinking skills. The design used in this research is a nonequivalent pre-test and post-test control group design. This study used a purposive sampling technique to get two groups. The statistical analysis used was independent sample t-test. The results of the analysis showed that there was an effect of using...
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Development of Diagnostic Tests to Identify Students' Problem-Solving Difficulties in Static Fluid Material
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The availability of diagnostic instruments specifically designed to identify students' difficulties in solving problems related to static fluids is still limited, even though this material often leads to misconceptions and conceptual difficulties. This article aims to present the results of the development of a diagnostic test instrument to identify students' problem-solving difficulties in the static fluid material. This study employs the R&D (Research and Development) method using the ADDI...
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Sustainable Aquaculture: The Role of Probiotic Fortification In Enhancing Catfish Growth In Biofloc Aquaponics Technology
Dewi, Endah Rita Sulistya
; Mufidah, Ratna
; Rakhmawati, Reni
; Ulfah, Maria
; Khoiri, Nur
; Wijaya, Angelica Tricia
; Hudin, Noraine Salleh
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 2
(2025)
Catfish (Pangasius sp.) is a freshwater fish commodity that is widely cultivated in the Indonesian fisheries sector. The aim of this research was to determine the effect of fortification of liquid probiotics bioprisma and biogan on the protein and fat of catfish meat in the biofloc aquaponics technology. The catfish used in this study was 7-8 cm in size. The research was carried out using a completely randomized design (CRD) method with 3 treatments and 3 replications, the treatments were as fol...
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Performance Comparison of UWB Single Balanced Schottky Diode Mixers for RF Front-End Applications in 3-10 GHz Band
Shairi, Noor Azwan
; Mohammed , Yahya Al-gumaei
; Zakaria, Zahriladha
; Maizatul Alice Meor Said
; Misran, Mohamad Harris
; Abdullah Mohammed, Zaghir Zobilah
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 2
(2025)
This paper compares two single balanced mixer designs for ultra-wideband (UWB) of RF front-end at frequencies ranging from 3 to 10 GHz. The proposed mixer designs use two balun topologies for varying mixer performances. Thus, Design 1 incorporates a Coupled Line Balun and Design 2 incorporates a Branch Line Balun. Both designs make use of Skyworks' SMS7621 Schottky diodes, which have a low junction capacitance, and the Rogers RO4350B substrate, which has a dielectric constant of 3.48. The Coupl...
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Strategy for Optimizing Narrow Land Through Vegetable Planting With a Hydroponic System as an Effort to Improve Community Welfare
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 1
(2025)
Lahan merupakan salah satu sumberdaya alam yang menjadi faktor produksi utama dalam kehidupan manusia. Di perkotaan lahan menjadi permasalahan karena banyak digunakan untuk sector non pertanian, sedangkan masyarakat kota tetap harus mengadapi permasalahan pemenuhan kebutuhan gizi keluarga. Salah satu upaya optimalisasi pengunaan lahan untuk bercocok tanam di pekarangan rumah dengan kondisi lahan sempit dan perkotaan adalah sistem hidroponik. Mitra dalam program pengabdian ini merupakan ibu-ibu P...
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Reaksi Pasar Modal Indonesia terhadap Peristiwa Politik Sebelum dan Setelah Pelantikan Presiden Prabowo-Gibran (Event Study pada Indeks Saham LQ45)
DHARMA EKONOMI
Vol 32
, No 1
(2025)
This study aims to analyze the reaction of the Indonesian capital market to the inauguration of President Prabowo-Gibran using the event study method. The important variables in this study are abnormal returns and trading volume activity, with the population of all companies listed in the LQ45 stock index. The observation period was 14 days. The data consists of daily closing stock price, daily closing price of LQ45 IHSG, daily trading volume, and the number of shares outstanding. Hy...
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Assistance in Handling Ergonomic Work Hazard Factors to Prevent MSDs in Informal Workers
Paskanita, Maria
; Suratna, Farhana Syahrotun Nisa
; Husna, Alifah Muti
; Ardhia , Berliana
; Kinasih, Eka Ayu Putri
; Wibisono , Mario
; Sulastri, Mia
; Romadhona , Novita Dwi
; Nur Arifin
; Dzakiyatunisa, Raihana
; Ardhana, Revan Wahyu
; Rahmatulah, Suci
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 1
(2025)
Informal labour in the world is 57.8% according to ILO data in 2024. Indonesia has 59.11% proportion of informal employment in 2024 according to the Central Bureau of Statistics. Informal workers have hazardous factors that have not been identified and can cause injuries or occupational diseases. Informal cake-making workers who work 8 hours a day are potentially exposed to ergonomic hazards, fire hazards from cake baking and other occupational hazards. The purpose of this service is to pr...
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Preparation of Reservoir’s Development Program Using SWOT Analysis
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 1
(2025)
Karangasem Village, Bulu District, Sukoharjo Regency has natural potential in the form of a reservoir that has not been utilized optimally. To develop a reservoir development program, a SWOT analysis was carried out using a focused group discussion method between the Community Service Team from Veteran Bangun Nusantara Sukoharjo University, the Karangasem Village Government, and the GP Fish Farmers Group. The data collection stage produces strength data, namely: it has sufficient area, the depth...
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Certification of Internal Auditors of OHS Management Systems for Supervisors In PT X
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 1
(2025)
ABSTRAK
The internal auditor certification of the K3L management system should not be underestimated, considering the vital role played by supervisors in the direct supervision of company operations. Based on a preliminary survey, PT X is a company that assembles solar panels to be marketed domestically and abroad. In 2023, PT X carried out ISO 9001, ISO 14001, and ISO 45001 certification audits, but in the audit process, it was found that there had been no certification activities and appointme...
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