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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Jurnal Geodesi Undip Jurnal Desiminasi Teknologi Seminar Nasional Lahan Suboptimal JURNAL HUKUM ISLAM Jurnal Riset Inossa : Media Hasil Riset Pemerintahan, Ekonomi dan Sumber Daya Alam Journal of Marine Research JURNAL HUTAN TROPIS JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT
Muhammad Helmi
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Kajian Kerentanan Pantai Di Pesisir Kabupaten Rembang Provinsi Jawa Tengah Dwi Puspa Arini; Agus Indarjo; Muhammad Helmi
Journal of Marine Research Vol 3, No 4 (2014): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (255.556 KB) | DOI: 10.14710/jmr.v3i4.8368

Abstract

Kabupaten Rembang merupakan wilayah yang secara langsung menerima dampak dari aktivitas erosi akibat arus dan gelombang. Erosi memiliki sifat merusak yang dapat  menganggu keseimbangan ekosistem dan dapat merusak infrastruktur yang telah dibangun pada daerah tersebut dan daerah sekitarnya. Tujuan dari kajian ini adalah untuk mengetahui pengaruh mangrove terhadap tingkat kerentanan pantai dan untuk memetakan Indeks Kerentanan Pantai berdasarkan pada lima variabel yang digunakan yaitu: tipologi pantai, geomorfologi pantai, vegetasi mangrove, kemiringan pantai dan penggunaan  lahan pesisir. Terdapat empat kelas kerentanan pantai di Kabupaten Rembang yaitu rendah, sedang, tinggi dan sangat tinggi. Pengaruh Mangrove untuk Kecamatan Kaliori tidak terlalu tampak, sedangkan di Kecamatan Rembang terjadi perubahan nilai kerentanan pantai dari tingkat kerentanan rendah menjadi tingkat kerentanan sedang.
ANALISIS PERUBAHAN LUAS MANGROVE BERDASARKAN CITRA SATELIT IKONOS TAHUN 2004 DAN 2010 DI KECAMATAN MLONGGO, TAHUNAN DAN KEDUNG KABUPATEN JEPARA JAWA TENGAH Afirman Karyono; Rudhi Pribadi; Muhammad Helmi
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.488 KB) | DOI: 10.14710/jmr.v2i3.3141

Abstract

Mangrove as one of coastal ecosystem has plenty of role on coastal stability, but the current condition even though of mangroves ecosystem is Java, including Jepara destructed by many reasons mostly human activities such as. Conversion of mangrove forests to ponds, settlements and illegal logging. Rehabilitation was conducted in some places. therefore, there is a need of review the changes. The purpose of this study to determine the mangrove area changes based on IKONOS satellite imagery of 2004 and 2010 in the District Mlonggo, Tahunan and Kedung, Jepara. Descriptive method is used to describe the state of research areas by comparing the field data and interpretation process. Satellite images have been digitized in overlay to know the changes at mangrove area. Ground check was conducted the field using the quadratic sampling plots of 10m x 10m to for tree, 5m x 5m for sapling and 1m x 1m for seedling. The results were increate that the between period of 2004 to 2010. However, the mangrove area increased 5,959 ha and reduced 5,294 ha and so there was in general 0.665 ha increased. The total area at mangrove in 2004 38,098 ha and in 2010 was variously 37,444. There were at least 20 species in the research area and Rhizophora sp was the most dominant species.
ANALISIS SALURAN PEMASARAN KULIT KAYU MANIS (Cinnamomum burmannii) DI KECAMATAN LOKSADO KALIMANTAN SELATAN Arfa Agustina Rezekiah; Muhammad Helmi; Lolyta Lolyta
Jurnal Hutan Tropis Vol 1, No 3 (2013): Jurnal Hutan Tropis Volume 1 Nomer 3 Edisi November 2013
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v1i3.1547

Abstract

Tujuan penelitian ini adalah menganalisis saluran tataniaga kayu manis, menghitung biaya tataniaga pada saluran kayu manis, menganalisis distribusi margin pemasaran kayu manis, menganalisis efisiensi sistem tataniaga kayu manis. Penelitian dilaksanakan di Kecamatan Loksado.  Objek penelitian adalah petani dan pengumpul kayu manis serta para pelaku ekonomi pemasaran yang terkait dalam saluran pemasaran.  Data-data yang telah diperoleh kemudian dianalisa berdasarkan margin pemasaran (Mp = Pr – Pf     atau     Mp = ∑ Bi + ∑ Ki), , bagian petani (Sp = Pf/Pr  x 100%), margin keuntungan (Mki = Harga Jual – (Harga Beli + Biaya)) dan mark up on selling (Mark up on selling (Efisiensi operasional) = (Margin pemasaran / Harga jual) x 100%).  Hasil penelitian menunjukkan bahwa saluran pemasaran untuk kayu manis di Kecamatan Loksado ada 4 pola yaitu: (1) Petani-Konsumen (2) Petani-Pengumpul-Pedagang-Konsumen (3) Petani-Pengumpul-Pedagang Besar-Konsumen (4) Petani-Pengumpul-Pedagang Besar-Pedagang Kecil-Konsumen.  Secara keseluruhan saluran pemasaran kayu manis adalah efisien. Jika ditinjau dari sudut pandang petani maka pola 1 (Petani – Konsumen) adalah yang lebih efisien karena petani mendapatkan keuntungan yang lebih banyak, dan jika ditinjau dari sudut pandang lembaga pemasaran maka pola 2 (Petani – Pengumpul – Pedagang (Kandangan) – Konsumen) yang lebih efisien. Kata kunci: kulit kayu manis, saluran pemasaran
PRO-BEBAYA EFFECTIVENESS AS A LEADING PROGRAM FOR THE GOVERNMENT OF SAMARINDA CITY Muhammad helmi
Jurnal Riset Inossa Vol. 4 No. 1 (2022): Juni
Publisher : Badan Penelitian dan Pengembangan Daerah Kota Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54902/jri.v4i1.59

Abstract

Pro-Bebaya is the flagship program of the Mayor of Samarinda in 2022. However, as a pilot project, in 2021, one Neighborhood Association is appointed for each sub-district. Because the program is new, it is necessary to assess the effectiveness of its implementation with a progressive legal approach, namely the operation of law in society. After analyzing several problems. First, the regulations have been revised while the program has not been implemented. Second, the Pro-Bebaya changes/revisions did not have a significant impact. Initially, Pokmas were formed through Urban village meetings, then formed through community meetings. Deliberation in the field is more effective in the Urban village than in the community. Third, in the Pro-Bebaya provisions some assistants assist from the beginning of planning to report, however, during the 2021 Pilot Project, Gunung Panjang Village there was no assistance, and also during the planning and preparation of the RAB proposed by each Neighborhood Association for 2022 they were not accompanied by assistants. Fourth, in 2022 all of the neighborhoods made RAB not check the standard book. Fifth, based on the experience of the Gunung Panjang Pokmas in 2020 and 2021, they experienced difficulties in making reports and taxes. Because reporting does not have standards such as receipts, goods orders (SPB), and Work Received Minutes (BAPPHP), and the tax value is confusing. Sixth, the lack of clarity on the Pro-Bebaya regulations, who will occupy the self-management team among the planning team, implementing team, and supervisory team
Sebaran Residu Endosulfan dan DDT di Lahan Pertanian Kecamatan Wanasari, Kabupaten Brebes Poniman Poniman; Tri Retnaningsih Soeprobowati; Muhammad Helmi
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Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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

Abstract

Poniman P, Soeprobowati TR, Helmi M. 2020. Distributions residue of  endosulfan and DDT in  lands agricultural wanasari sub-district, Brebes regency. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-8 Tahun 2020, Palembang 20 Oktober 2020. pp. xx. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).As the result of pesticide use by exaggerated on farming sector can causing land degradation. The movement of some shallot farmers agriculture from Brebes Regency to neighboring districts, such as Cirebon, Majalengka, and Kendal is evidence of the degradation of shallot land in Brebes. The pesticides of Endosulfan and DDT were many and often used to control pests during the green revolution. The research aimed to determine the distribution residues of endosulfan and DDT  in the upstream area of Wanasari sub-District. The research was carried out by taking soil samples in the field, analyzing pesticide residues in laboratory, and mapping the distribution of residues. A total of 45 soil sample points were collected from the upstream part rice fields of Wanasari sub-District, Brebes Regency. Residue analysis was carried out at the Integrated Laboratory of the Agricultural Environment Research Institute, using the QuEChERS method. Meanwhile, the residue distribution mapping used the Spline interpolation method. From the identified land of 4,688,825 ha, it was detected that the endosulfan residue in the high-very high category was 1,605,576 ha (34.2%) and the high-very high category of DDT residue was 752.2028 ha (16.0%).
Rendement and Characteristics of Wood Vinegar Produced from Ironwood Delinquent Waste through Clay Kiln Charcoaling Furnace Muhammad Faisal Mahdie; Violet Violet; Muhammad Helmi
Journal of Wetlands Environmental Management Vol 8, No 2 (2020): July - December
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (681.108 KB) | DOI: 10.20527/jwem.v8i2.231

Abstract

The study aimed to determine the rendement of charcoal and wood vinegar and to identify wood vinegar chemical compounds made from ironwood deliquent waste. The study was carried out by using charcoaling facilities at the charcoaling center in the village of Asam – Asam. The charcoal and wood vinegar rendements  were determined after ironwood delinquent waste was heated for 21 days with a temperature of approximately 400 - 600 ºC. The results showed that the rendement of the charcoal and wood vinegar were 14.02% and 0.05%, respectively. The research with wood vinegar characteristic before purification was pungent, however after purification, the results did not sting; color pH before purification was blackish-brown, however after purification it was pale brown yellow; the specific gravity before purification was 1.012 and after purification, it was 0.97; the pH before purification is 3.63 and after purification 3.41; and acid content before purification was 3.73% and after purification it was 3.66%. As a whole, the physics test of wood vinegar is categorized in Japan standard, however, the color only before purification is not standard. There are five chemical compounds identified in wood vinegar both before and after purification.
Co-Authors Adhyaksa Saktika Drestanto Adiasti Rizqi Hardini Afirman Karyono Agus Hartoko Agus Indarjo Anindya Wirasatria Arfa Agustina Rezekiah Bandi Sasmito Bhaskoro Rochaddi Dwi Puspa Arini Herkiki S Himavan Prathista Nugraha Indratin Indratin Lolyta Lolyta M. Taufan Qoriadi Mochamad Arief Budihardjo Muhammad Faisal Mahdie Petrus Subardjo Poniman Poniman Rudhi Pribadi S Wouthuyzen Tika Murni Asih Tri Retnaningsih Soeprobowati Violet Violet