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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
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

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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
Co-Authors Agusti, Febrina Anggraini, Erlinata Aulia, Michell Bagus Kristanto, Dery Bagus Pratama, Wisnu 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 Tri Supatmi, Galuh Indah USBAH, ALIKA MAEZALATI Wening Wihartati Zulfa Fahmy