Garuda - Garba Rujukan Digital

SOSIALISASI PENERAPAN SISTEM AGROFORESTRY UNTUK KEBERLANJUTAN LAHAN PERTANIAN Ponisri Ponisri; Nurul Fajeriana; Sukmawati Sukmawati; Bertha Mangallo; Ishak Musaad; Agnes Dyah Novitasari Lestari
Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024 Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5
Publisher : Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024

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

Kelurahan Jamaimo, Distrik Mariat, Kabupaten Sorong memiliki potensi lahan pertanian seluas 20 ha dengan topografi beragam, dari datar hingga berbukit, yang rentan terhadap erosi dan penurunan kualitas tanah. Masyarakat setempat, dengan berbagai latar belakang profesi, sebagian besar adalah petani yang masih mengandalkan sistem monokultur. Sistem agroforestry diperkenalkan sebagai solusi untuk meningkatkan keberlanjutan lahan melalui integrasi tanaman dan pohon guna mencegah erosi, meningkatkan kesuburan tanah, dan mengurangi ketergantungan pada bahan kimia. Kegiatan sosialisasi dilakukan dengan metode ceramah dan tanya jawab, melibatkan 22 petani untuk memberikan pemahaman mengenai teknik dan manfaat agroforestry. Hasil kegiatan menunjukkan bahwa tingkat pengetahuan petani tentang agroforestry masih rendah, sehingga diperlukan edukasi berkelanjutan untuk mendorong praktik pertanian yang lebih ramah lingkungan, produktif, dan berkelanjutan. Sosialisasi yang diberikan dapat meningkatkan pemahaman tentang agroforestry, dengan beberapa hal yang terkait pemanfaatan lahan secara optimal dan berkelanjutan, pengurangan ketergantungan pada pupuk kimia, dampak positif dari agroforestry dan kesadaran akan keberlanjutan lahan. Sehingga kedepannya kesadaran kelompok tani akan menerapkan system agroforestry dan keberlanjutan lahan dapat dilaksanakan lebih baik lagi dengan pendampingan secara kontinyu pada kelompok tani.

Black Fruit Plant (Haplolobus Monticola) Ethanolic Extract as a Good Source of Chemical Compound Content with The Potential as A Safe Antioxidant and Antibacterial Agent Lestari, Agnes Dyah Novitasari; Toja, Yori Turu; Ungirwalu, Antoni; Ramlah, Ramlah -; Somar, Evelina; Murtihapsari, Murtihapsari -
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 11, No 1 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i1.34417

Black fruit is a native Papuan plant that faces extinction if it is not propagated. The availability of scientific information on the potential use of black fruit can help proliferate this plant. This study investigates the potential of black fruit plants in the leaves and flesh of the fruit using extraction, characterization, and extract activity testing. Extraction was carried out by maceration using a 96% ethanol solvent. Characterization was carried out by FTIR, UV-Vis spectrophotometers, and phytochemical screening. The antioxidant activity test was carried out by the DPPH method, the antibacterial test was carried out by the well diffusion method, and the toxicity test was carried out by the BSLT (Brine Shrimp Lethality Test) method. The results showed that the ethanol extract of black fruit flesh separated into two layers when stored in the refrigerator, while the leaf extract did not. Leaf extract is richer in phytochemical content compared to fruit flesh. Antioxidant and antibacterial activities were higher in leaf extracts than in fruit pulp extracts. Toxicity test results showed that the ethanol extract of black fruit leaves has the potential to be used as a food additive for antioxidant and antibacterial properties. The potential benefits of the ethanol extract of black fruit leaves and flesh can encourage cultivation and post-harvest management of this plant.

Pelatihan Budidaya Ikan Lele Sistem Bioflok untuk Karang Taruna Tirta Bahari Sorong sukmawati, sukmawati; Ponisri, Ponisri; Fajeriana, Nurul; Mangallo, Bertha; Musaad, Ishak; Lestari, Agnes Dyah Novitasari
Yumary: Jurnal Pengabdian kepada Masyarakat Vol. 6 No. 1 (2025): September
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/yumary.v6i1.3733

Purpose: The catfish farming training using the biofloc system conducted for the Tirta Bahari Youth Group in Jamaimo Village aims to enhance the skills and knowledge of the fisheries group in utilizing biofloc technology as an efficient, sustainable, and environmentally friendly aquaculture method. Methodology: The biofloc system boosts fish farming productivity by using microorganisms to process feed waste and excrement into an additional nutrient source. Results: This training covered biofloc pond design, introduction of microorganisms, water quality monitoring for catfish growth, and maintenance management through aeration control and measurement of key parameters, such as pH, dissolved oxygen, and ammonia, to maintain pond stability. Conclusions: This training is expected to enhance the knowledge and skills of the Tirta Bahari Youth Group in biofloc-based fish farming, enabling them to apply it independently and sustainably. In the long term, this initiative is expected to strengthen the local economy by creating business opportunities in the aquaculture sector, enhancing food security, and empowering the Tirta Bahari Youth Group and other youth as agents of change who can contribute to sustainable fishery resource use in Jamaimo Village. Limitations: The time available for training may not be sufficient to cover all technical aspects in depth; therefore, participants may not be fully prepared to implement the biofloc system independently. Contribution: This service can have a wide and sustainable positive impact on the Jamaimo Village community.

Evaluasi Kualitas Air Limbah, Udara Ambien, dan Kebisingan di Lingkungan Hotel X dan Y di Manokwari Lestari, Agnes Dyah Novitasari; Mamengko, David Victor; Kusumo, Pribowo Angling; Susilowati
Environmental Insight Journal Vol. 1 No. 1 (2025): January
Publisher : Postgraduate Faculty, Yogyakarta Institut of Technology, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37412/eij.v1i1.338

Perkembangan sektor pariwisata, khususnya keberadaan hotel sangat mendukung perekonomian nasional maupun internasional, namun berpotensi menimbulkan dampak negatif terhadap lingkungan jika tidak dikendalikan dengan baik. Salah satu upaya pengendalian dampak lingkungan keberadaan hotel adalah dengan memantau dan mengevaluasi kualitas air limbah, udara ambien, dan kebisingan di lingkungan hotel secara periodik dan berkelanjutan. Penelitian ini bertujuan menganalisis dan mengevaluasi kualitas air limbah, udara ambien, dan kebisingan di hotel X dan Y yang merupakan hotel berbintang di kota Manokwari, Papua Barat. Evaluasi dilakukan secara deskriptif terhadap data analisis in situ dan data laboratorium untuk parameter kualitas air limbah domestik yaitu TSS, pH, BOD, dan COD serta parameter kualitas udara ambien, yaitu suhu, SO2, CO, NO2, O3, Total Partikel Tersuspensi (TSP), Timbal (Pb), Non Metana Hidrokarbon (NMHC), serta parameter kebisingan. Hasil penelitian menunjukkan bahwa kualitas air limbah, udara ambien, dan kebisingan di lingkungan hotel X dan Y masih memenuhi standar baku mutu lingkungan yang diijinkan. Namun demikian, pemantauan dan evaluasi berkala perlu terus dilakukan agar hotel tidak menimbulkan dampak negatif di kemudian hari.

Pemodelan Dispersi NO2 dari Aktivitas Transportasi Menggunakan Software AERMOD di Kawasan Kotagede Louisa Jessica Permatasari; Dewi Eviane; Nur Iswanto; Agnes Dyah Novitasari Lestari
Environmental Insight Journal Vol. 1 No. 2 (2025): July
Publisher : Postgraduate Faculty, Yogyakarta Institut of Technology, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37412/eij.v1i2.356

ABSTRAK Kondisi lalu lintas di suatu wilayah memberikan pengaruh dan dampak pada kualitas udara. Kotagede merupakan salah satu bagian dari kawasan cagar budaya yang terletak di Kecamatan Kotagede, Kota Yogyakarta yang memiliki banyak bangunan berarsitektur tua dengan kepadatan transportasi yang cukup tinggi. Tujuan penelitian ini untuk mengetahui nilai konsentrasi udara ambien NO2, mengetahui dispersi NO2, dan menyusun rekomendasi pengelolaan lingkungan untuk menanggulangi polusi udara. Metode penelitian yang digunakan adalah uji sampling kualitas udara, menghitung jumlah kendaraan, memodelkan sebaran menggunakan software American Meteorological Society (AMS) and U.S. Environmental Protection Agency (EPA) Regulatory Model (AERMOD), dan mengkaji serta memberikan saran pengelolaan dalam menanggulagi polusi udara. Hasil sampling di lapangan menunjukkan bahwa titik A di salah satu bagian Pasar Kotagede melebihi baku mutu dan lebih tinggi dibanding yang lainnya. Titik D memiliki tingkat pencemaran terendah dibandingkan dengan titik-titik lainnya. Rekomendasi pengelolaan lingkungan untuk mengurangi konsentrasi NO2 ambien di wilayah Kotagede dilakukan dengan memperhatikan aspek lingkungan, kebijakan, dan teknis pengelolaan lingkungan.

ANALISIS DAYA DUKUNG SUNGAI MENGGUNAKAN QUAL2Kw: STUDI KASUS SEGMEN SUNGAI GAJAHWONG, YOGYAKARTA Ali Aulia Ghozali; Yoshua; Dewi Eviane; Agnes Dyah Novitasari Lestari
Jurnal Rekayasa Lingkungan Vol. 24 No. 1 (2024)
Publisher : Institut Teknologi Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37412/jrl.v24i1.260

Beberapa simulasi penentuan status mutu air Sungai Gajahwong, dan analisis pola penyebaran dan pencemaran pada air Sungai Gajahwong telah dilakukan dalam penelitian ini. Segmen yang diteliti berada pada segmen kawasan perkotaan, yakni dari titik Jembatan Balérejo hingga Bendungan Wirokertèn (6,84 km), sebanyak 7 titik pengambilan sampel. Data hasil pengamatan di lapangan kemudian dianalisis menggunakan Qual2Kw. Parameter yang diujikan yakni: pH, nitrat, fosfat, BOD, DO, dan suhu. Penelitian dilakukan pada Juni 2022. Model yang dibangun berdasarkan data input memiliki nilai eror yang rendah (U = 0,09±0,08), sehingga dapat digunakan untuk analisis lanjutan. Hasil analisis skenario menunjukkan beban cemaran pada Sungai Gajahwong telah melampaui daya dukungnya, khusus untuk parameter BOD dan fosfat. Secara alaminya, dengan kondisi beban cemaran eksisting pada T1, maka pada T7 kualitas air sungai diprakirakan mampu melakukan purifikasinya dengan baik. Untuk kondisi eksisting, maka diperlukan pengurangan beban cemaran pada Sungai Gajahwong segmen Balérejo-Wirokertèn 0,7-1,5× lipat untuk parameter BOD dan 4,7× lipat untuk parameter fosfat dari nilai data terakhir.

Black Fruit Plant (Haplolobus Monticola) Ethanolic Extract as a Good Source of Chemical Compound Content with The Potential as A Safe Antioxidant and Antibacterial Agent Lestari, Agnes Dyah Novitasari; Toja, Yori Turu; Ungirwalu, Antoni; Ramlah, Ramlah -; Somar, Evelina; Murtihapsari, Murtihapsari -
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 11 No. 1 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i1.34417

Black fruit is a native Papuan plant that faces extinction if it is not propagated. The availability of scientific information on the potential use of black fruit can help proliferate this plant. This study investigates the potential of black fruit plants in the leaves and flesh of the fruit using extraction, characterization, and extract activity testing. Extraction was carried out by maceration using a 96% ethanol solvent. Characterization was carried out by FTIR, UV-Vis spectrophotometers, and phytochemical screening. The antioxidant activity test was carried out by the DPPH method, the antibacterial test was carried out by the well diffusion method, and the toxicity test was carried out by the BSLT (Brine Shrimp Lethality Test) method. The results showed that the ethanol extract of black fruit flesh separated into two layers when stored in the refrigerator, while the leaf extract did not. Leaf extract is richer in phytochemical content compared to fruit flesh. Antioxidant and antibacterial activities were higher in leaf extracts than in fruit pulp extracts. Toxicity test results showed that the ethanol extract of black fruit leaves has the potential to be used as a food additive for antioxidant and antibacterial properties. The potential benefits of the ethanol extract of black fruit leaves and flesh can encourage cultivation and post-harvest management of this plant.

PENGARUH WAKTU PENYINARAN DAN KONSENTRASI AWAL LARUTAN KROMIUM(VI) TERHADAP HASIL FOTOREDUKSI KROMIUM(VI) YANG TERKATALISIS OLEH SEMIKONDUKTOR ZNO-ZEOLIT: EFFECT OF EXPOSURE TIME AND INITIAL CONCENTRATION CHROMIUM(VI) SOLUTION ON PHOTOREDUCTION RESULTS SEMICONDUCTOR CATALYZED Chromium(VI). ZNO-ZEOLITE Buka di Google Terjemahan • Masukan Google Terjemahan Lestari, Agnes Dyah Novitasari
JISTECH: Journal of Information Science and Technology Vol 7 No 1 (2015): Pebruari 2015
Publisher : Universitas Papua

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

The Yield of a photoreduction process of chromium(VI) or Cr (VI) catalyzed by ZnO semiconductorstructured in the zeolite/ZnO-zeolite (ZnO-Z) can be influenced by several factors, including the exposure timeand the initial concentration of the Cr (VI) solution. In this study, the photoreduction process of Cr (VI) iscarried out in a closed batch reactor equipped with a magnetic stirrer and a 38 Watt UV lamp. A total of 50 mLof a Cr(VI) solution and 25 mg of ZnO-Z was used to study the effect of exposure time and the initialconcentration of the Cr(VI)solution to the yield of its photoreduction process. The concentrations of Cr (VI) weredetermined by UV-Vis spectrophotometer using difenilkarbazid method. To determine the catalyst performanceof ZnO-Z in the photoreduction process, an examination of the catalyst in the form of bulk ZnO (ZnO bulkform)has been done. The results showed that the optimum exposure time in the photoreduction process of Cr (VI)catalyzed by ZnO-Z is 25 hours and the optimum initial concentration of Cr (VI) is 25 mg/L. Photoreductionyield of Cr (VI) by catalyst ZnO-Z is higher than the ZnO bulkform.

Penentuan Kandungan Kation dan Anion Mayor dalam Abu Serabut Kelapa Berpotensi Katalis Renewable: Determination of Major Cation and Anion Content in Coconut Fiber Ash Potentially Renewable Catalyst Naibaho, Julius; Muin, Ahmad; Lestari, Agnes Dyah Novitasari
JISTECH: Journal of Information Science and Technology Vol 6 No 2 (2014): Vol. 6, No. 2, Agustus 2014
Publisher : Universitas Papua

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

Coconut fibers ash contain the cations and anions that can be use as renewable catalyst in certain chemical reaction. Coconut fibers ash that used in this experiments was from Manokwari, Papua Barat. Coconut fibers ash samples was destructed by aqua regia and was analyzed by Atomic Absorption Spectrophotometer (AAS) for determine cations and anions. The another part of sample was decarbonated and extracted with in methanol, then carbonats and bicarbonats were determined using acidimetry method. The AAS analyze results that coconut fibers ash samples in this experiments were contains K (20.140 g/kg); Ca (13.897 g/kg); Mg (4.611 g/kg); Fe (34.502 g/kg); dan Mn (8.957g/kg) cations. The major anions is carbonat (145.54 g/kg) and bicarbonate (50.051g/kg). The kalium content that was high in carbonats makes the aqeous of coconut fibers ash have base properties, it be potentially as renewable catalyst in the certain chemical reaction.

Potensi Pengembagan Dye Sensitized Solar Cell (DSSC) dengan Sensitizer Zat Warna Alami dari Tumbuhan Asal Papua sebagai Alternatif Solusi Krisis Energi dan Pemanasan Global: The Potential for Development of Dye Sensitized Solar Cell (DSSC) with Natural Dyes Sensitizers from Papuan Plants as an Alternative Solution to the Energy Crisis and Global Warming Lestari, Agnes Dyah Novitasari
JISTECH: Journal of Information Science and Technology Vol 6 No 1 (2014): Februari 2014
Publisher : Universitas Papua

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

Currently, the energy crisis and global warming are an important issue internationally, including Papua. Various attempts were made to overcome these problems, for instance the development of alternative energy that does not cause global warming: the solar energy harvested by the solar cells (solar cells). There is an obstacle for solar cell applications: the high production costs. This problem is solved by the discovery of a type of solar cell Dye Sensitizized Solar Cell (DSSC).Utilization of local potential will reduce the cost of fabricating such a device. Papua is well know for its flora abundance and diversity, one of which is a natural dye-producing plants. Color produced by these plants show content that has a group of compounds that can absorb light (chromophore) contained therein. The content of this chromophore compounds provide potential it can be used as a sensitizer in DSSC, thus resulting DSSC that is relatively cheap for Papua.

Title

Found 20 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 20 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 20 Documents
Search