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All Journal Media Gizi Kesmas PAEDAGOGY : Jurnal Ilmu Pendidikan dan Psikologi Indonesian Community Journal Jurnal Psikologi Terapan (JPT) Jurnal Abdimas Musi Charitas Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Proceeding of International Conference Health, Science And Technology (ICOHETECH) Bengawan :Jurnal Pengabdian Masyarakat Ulil Albab Journal of Cultural Narratives in Digital Society Science Get Journal
AMBARWATI, SEPTIANA
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Membran Komposit Polieter Eter Keton Tersulfonasi (sPEEK) dan Kitosan dengan Bahan Isian Cs2.5H0.5PW12O40 untuk Direct Methanol Fuel Cell Ambarwati, Septiana; Hidayati, Nur
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2019: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kinerja Direct Methanol Fuel Cell (DMFC) secara aktif telah menjadi target riset pengembangan material energi terbarukan. Untuk mendukung kinerja DMFC perlu adanya Proton Exchange Membrane (PEM) yang lebih efektif dan efisien. Polyether Ether Ketone tersulfonasi (sPEEK) telah terbukti menjadi alternatif membran karena menunjukkan sifat yang lebih unggul dan biaya lebih rendah. Modifikasi sPEEK dilapisi dengan lapisan penghalang Kitosan membentuk membran komposit dua lapis sPEEK-Kitosan dengan bahan isian Cs2.5H0.5PW12O40 (CsPTA) menunjukkan bahwa sifat Water Uptake, Swelling Degree dan IEC dipengaruhi oleh banyaknya kandungan CsPTA dalam membran. Water Uptake maksimum dicapai pada 53%, swelling degree pada 48,64% sedangkan IEC berada pada kondisi maksimal pada nilai 1,00 meq. Sifat mekanik membran komposit diuji berdasar uji kuat tarik menunjukkan kekuatan membran berada pada kisaran 39-48 MPa. Dari hasil karakterisasi membran komposit tersebut, membran komposit sPEEK-Kitosan dengan bahan isian Cs2,5H0,5PW12O40 memiliki sifat yang sebanding dengan membran komersial nafion sehingga dapat diaplikasikan pada Direct Methanol Fuel Cell.
Effect Of Papaya Leaf Extract (Carica Papaya L) As A Bioinsecticide To Remove Cage Flies (Stomoxys calcitrans) Bagus Kristanto, Dery; Parida Hutapea, Henny; Ambarwati, Septiana
Proceeding of the International Conference Health, Science And Technology (ICOHETECH) 2024: Proceeding of the 5th International Conference Health, Science And Technology (ICOHETECH)
Publisher : LPPM Universitas Duta Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47701/icohetech.v5i1.4236

Abstract

This research investigates the effectiveness of papaya leaf extract (Carica papaya L.) as a bioinsecticide against stable flies (Stomoxys calcitrans) and aims to identify the most effective concentration and solvent for killing these pests. Conducted using a Completely Randomized Design (CRD), the study utilized papaya leaf extracts obtained through maceration at concentrations of 10%, 15%, and 20%, with 96% ethanol and aquades as solvents. Phytochemical analysis confirmed the presence of beneficial compounds such as alkaloids, flavonoids, and saponins. The one-way ANOVA results revealed a significant impact of the ethanol-based extract on fly mortality, with a p-value of 0.00, while aquades showed no significant effect (p = 0.065). Notably, a 20% concentration of the ethanol extract achieved 100% mortality of stable flies within 50 minutes, indicating that papaya leaf extract is a cost-effective and environmentally friendly bioinsecticide, particularly when using ethanol as a solvent.
Rotary Evaporator Design And Equipment Performance To Increase The Concentration Of Moringa Leaf Extract Bagus Pratama, Wisnu; Parida Hutapea, Henny; Ambarwati, Septiana
Proceeding of the International Conference Health, Science And Technology (ICOHETECH) 2024: Proceeding of the 5th International Conference Health, Science And Technology (ICOHETECH)
Publisher : LPPM Universitas Duta Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47701/icohetech.v5i1.4237

Abstract

The process of extracting active compounds from Moringa leaves requires efficient techniques so that active compounds can be isolated in high concentrations without damaging the chemical structure. The tool commonly used is a rotary evaporator. This research analyzes the percentage of solvent evaporation using a Rotavap Extractor and a conventional rotary evaporator. Both tools aim to maximize solvent evaporation by retaining active compounds from the extract. This research compares the effectiveness of the two tools based on the percentage of solvent evaporated and the viscosity of Moringa leaf extract with different time variations (40, 60, 80 minutes). The percentage of solvent that evaporates has an important role in determining the concentration and viscosity of Moringa leaf extract. As more solvent evaporates, the extract becomes more concentrated, increasing the viscosity due to the high concentration of active compounds. The percentage of solvent evaporated and viscosity show the same trend between the conventional rotary evaporator and the rotavap extractor, this indicates that both devices work with similar efficiency in evaporating solvent from Moringa leaf extract.
Hubungan Anemia, Asupan Mikronutrient dan Suhu Lingkungan Kerja Dengan Kelelahan Kerja Karyawan Wanita Instalasi Gizi RSUD Dr. Soetomo Surabaya ambarwati, septiana; Wirjatmadi, Bambang
Media Gizi Kesmas Vol 11 No 1 (2022): MEDIA GIZI KESMAS (JUNE 2022)
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/mgk.v11i1.2022.257-274

Abstract

Kelelahan kerja dapat mengganggu produktivitas  karyawan wanita. Kelelahan kerja di sebabkan oleh beberapa faktor seperti anemia dan suhu tempat kerja. Terjadinya anemia pada wanita, selain disebabkan oleh kehilangan darah pada saat menstruasi juga disebabkan oleh defisiensi zat gizi yang dibutuhkan untuk produksi dan pematangan sel darah merah seperti fe,asam folat, vitamin B12 dan vitamin C. Penelitian ini termasuk jenis penelitian observasional analitik dengan desain case control. Penelitian di lakukan di Instalasi Gizi RSUD Dr Soetomo Surabaya. Sampel dalam penelitian ini adalah karyawan wanita di Intalasi Gizi RSUD Dr Soetomo Surabaya yang terdiri dari 16 sampel kasus dan 16 sampel control. Sampel diambil secara proportional random sampling. Pengumpulan data meliputi pengkuran kadar HB, pengukuran suhu tempat kerja, food recall 24 hours dan pengisian kuesioner kelelahan kerja dan karakterstik responden. Analisis yang digunakan yaitu uji chi square. Hasil penelitian menunjukkan ada hubungan antara anemia (p=0,034) (OR=6,6), asupan zat besi (P=0,013) (OR=9,0), asupan asam folat (P=0,031) (OR=7,22),asupan vitamin B12 (P=0,034) (OR=6,6), asupan vitamin C (P=0,031) (OR=7,22) dan suhu lingkungan kerja (p=0,013) (OR=9.533) terhadap kelelahan kerja karyawan wanita. Kesimpulan dari penelitian ini adalah asupan fe, asam folat, vitamin B12, vitamin C dan suhu lingkungan kerja merupakan faktor resiko terjadiya kelelahan kerja pada karyawan wanita di Instalasi Gizi RSUD Dr Soetomo Surabaya   Kata kunci : kelelahan kerja, karyawan wanita, anemia, asupan mikronutrien, suhu lingkungan kerja
The Influence of Self-Disclosure and Social Media Addiction on Social Anxiety in Emerging Adults Users of Instagram Close Friend Feature Ambarwati, Septiana; El-Fikri, Dewi Nabela Sofya; Setiyaji, Nanda Ridwan
Journal of Cultural Narratives in Digital Society Vol. 1 No. 1 (2025): Cultural Narratives in Digital Society
Publisher : UNESA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcnds.v1i1.41239

Abstract

This study aims to examine the effect of self-disclosure and social media addiction on social anxiety in emerging adult users of Instagram's close friends feature among students in Semarang, in accordance with the formulation of the problem which aims to determine whether the two independent variables have a significant effect on the dependent variable. This study uses a quantitative method and a sample of 176 students, the study collected data through an online questionnaire (google form) with a Likert scale and analyzed using multiple linear regression. The results show that social media addiction has a significant effect on social anxiety (p <0.05, coefficient 0.5138), while self-disclosure does not have a significant effect, with the majority of respondents in the moderate category to the third variable. This study proves that social media addiction has an important role in increasing social anxiety in emerging adults in the digital era, contributing to understanding the psychological dynamics of social media users.
Effects of Fermentation Time and Brix on the Physicochemical Characteristics of Red Ginger Enriched Pineapple Honey Fermentate Bagus, Imanuel; Hutapea, Henny Parida; Ambarwati, Septiana
Science Journal Get Press Vol 2 No 4 (2025): October, 2025
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v2i4.273

Abstract

Pineapple is a local Indonesian fruit with limited processing applications. Developing a fermented herbal from pineapple with red ginger represent a potential product innovation to increase its value. This study aimed to determine the best formulation of pineapple-honey herbal fermentation with the addition of red ginger at different °Brix levels (20 and 30) and fermentation durations (2 and 4 weeks). Physicochemical and organoleptic characteristics were evaluated, including turbidity, °Brix, pH, ethanol content, vitamin C, and total soluble solids. Data were analyzed using one-way ANOVA and the Kruskal–Wallis test. The results showed that the addition of red ginger significantly affected turbidity, °Brix, vitamin C, and total soluble solids, but did not significantly affect pH and ethanol content. The best formulation based on organoleptic evaluation was obtained in samples fermented for 4 weeks at 30 °Brix. Overall, this study indicates that red ginger enrichment and fermentation parameters play an important role in improving the quality and sensory acceptability of pineapple-honey herbal fermentate.
Co-Authors Agusti, Febrina Anggraini, Erlinata Aulia, Michell Bagus Kristanto, Dery Bagus Pratama, Wisnu Bagus, Imanuel Bambang Wirjatmadi Banuwati, Ameilia Wahyu Dewi Khurun Aini El-Fikri, Dewi Nabela Sofya Fuadah, Fani Hutapea, Henny Parida Lestari, Sri Ayu Masfia, Irma Nadya Ariyani Hasanah Nuriyyatiningrum Nur Hidayati Putri, Rafika Aulia Rosemery, Khelsyana Rosa Setiyaji, Nanda Ridwan Tri Supatmi, Galuh Indah USBAH, ALIKA MAEZALATI wening wihartati, wening Zulfa Fahmy