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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Agrikultura Microbiology Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology BERKALA SAINSTEK Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman JURNAL PERBENIHAN TANAMAN HUTAN Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Wasian Jurnal Sains & Teknologi Lingkungan BERITA BIOLOGI Jurnal Teknologi Mineral dan Batubara AGRIKAN Jurnal Ilmiah Agribisnis dan Perikanan Jurnal Penelitian Pertanian Tanaman Pangan Jurnal Biologi Tropis Jurnal Manajemen Pembangunan Daerah Forest and Society Menara Perkebunan Jurnal Jamu Indonesia PERENNIAL Rawa Sains: Jurnal Sains STIPER Amuntai Jurnal Wasian Agrikan: Jurnal Agribisnis Perikanan Jurnal (FORSINTA) Informatika, Sistem Informasi dan Kehutanan Jurnal Penelitian Kehutanan Wallacea Prosiding Seminar Nasional Biologi Jurnal Teknologi Mineral dan Batubara Indonesian Journal of Jamu

Irdika Mansur

Departemen Silvikultur, Fakultas Kehutanan - Institut Pertanian Bogor

Author-ID : 314389

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Veterinary Other

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Effects of Transfer of Right and Jurisdictional Boundary on Mining Reclamation Performance in East Kalimantan Forest Areas Rina Kristanti; Hariadi Kartodihardjo; Bramasto Nugroho; Irdika Mansur
Jurnal Manajemen Hutan Tropika Vol. 26 No. 2 (2020)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.26.2.133

Mining is still considered to be an essential sector to gain national income and to provide energy supply. Forest Leasehold License (FLL) is a mechanism to accommodate the non-forestry sector, including mining development in the forest area. This license is a form of transfer of right given from Minister of Environment and Forestry to a mining license holder. Transfer of right by FLL contractual shaped jurisdictional boundary that is one of the obligations that has to be complied by FLL holder is to conduct mining reclamation. This study aimed to analyze the effects of FLL and its jurisdictional boundary on mining reclamation performance in East Kalimantan forest areas. It is a descriptive qualitative study based implemented the agency theory with the institutional approach. The study found that mining permit and FLL is a temporary transfer of right. The emerging problem in the FLL and its jurisdictional boundary related to asymmetric information and transaction cost caused moral hazards such as adverse risk selection of FLL holders by the principal, reclamation ignorance by the agent, and opportunism both from principal and agent. These agency problems affect FLL reclamation performance that just reached 41.35% over disturbed areas. Institutional challenges are due to the regulation gap creating a conflict of interest, budget and human resource constrain, cost center activity, and lack of economic incentive as well as lack of coordination among the government institutions. The research findings suggested inputs for institutional arrangement in terms of transfer of the right, including FLL reclamation process business, to improve its performance in the East Kalimantan forest area.

Identifying The Key Variables for Assessing The Reclamation Success on Early Growth Vegetation in Ex-exploration of Oil and Gas Mining Areas Tirta Negara; I Nengah Surati Jaya; Cecep Kusmana; Irdika Mansur; Nitya Ade Santi
Jurnal Manajemen Hutan Tropika Vol. 26 No. 3 (2020)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.26.3.222

This paper examines the identification of key indicators that could be used to measure the success of reclamation plants in post-exploration oil and gas mining areas. The main objective of this research was to find key indicators or variables for evaluating the level success of reclamation results in the post-mining of oil and gas area. In this study, 44 environmental variables of the physical, biological, soil, water and air indicators were analyzed from 70 field plots of 6 reclamation and 2 natural forest sites. The analysis methods included (1) cluster analysis using the Agglomerative Hierarchical Clustering method with the Ward's method, and (2) quadratic discriminant analysis. The results of the clustering analysis showed that there were some clusters due to variation of biomass, water, soil and air conditions. The three clusters developed based on water and/or air variables provided high cophenetic correlation (0.80) with low within-cluster (14.5%) and high between-cluster variations (85.5%). Based on the multicollinearity analysis, average vector difference test, variance matrix variance test, unidimensional test of each variable and quadratic discriminant function, this study found that there were 3 key indicators determining variations of the quality of the reclamation plantations within the study sites, namely, biological indicator of biomass volume (Bio_B); soil indicator of P content in the soil (Tnh_P), saturation base of soil (Tnh_Kb), Manganese (Mn) content in the soil (Tnh_Mn), Sulfur content in the soil (Tnh_S), percentage of ash in the soil (Tnh_Ab), percentage of clay in the soil (Tnh_Li), and water indicator of chloride content in the surface water (Air_Cl). The examination on four classes of the reclamation quality showed that the classes were successfully classified having excellent cross-validation error matrix with overall accuracy more than 90%.

The Growth of Lemongrass (Cymbopogon nardus (L.) RENDLE) in Agroforestry and Monoculture System on Post-Coal Mining Revegetation Land Anna Juliarti; Nurheni Wijayanto; Irdika Mansur; Trikoesoemaningtyas
Jurnal Manajemen Hutan Tropika Vol. 27 No. 1 (2021)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.27.1.15

Lemongrass (Cymbopogon nardus) as cover crop was suitable planted with agroforestry and monoculture system on post-coal mining revegetation land. The study investigated the influence of planting system, varieties, and plant spacing against the lemongrass growth on post-coal mining land under the agroforestry and monoculture system. Two lemongrass varieties were planted under on both planting systems. The growth variables of lemongrass measured were the tillers number per clump, leaf length, and canopy width. The results showed that the planting system and lemongrass varieties were able to increase the growth of lemongrass. Plant spacing treatment was able to increase the tillers number per clump. The agroforestry system was able to increase leaf length and canopy width of lemongrass. However, monoculture system was able to increase the tillers number per clump. The G2 variety had better growth on all measured variables either in agroforestry and monoculture system compared to Sitrona 2 Agribun variety. The plant spacing of 0.5 m × 0.5 m had greater tillers number per clump of lemongrass compared to plant spacing of 1 m × 1 m.

Tebang pilih tanam jalur : pemodelan pertumbuhan tanaman meranti pada jalur tanam . Wahyudi; Andry Indrawan; Irdika Mansur; Prijanto Pamoengkas
Jurnal Ilmu Pertanian Indonesia Vol. 15 No. 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1119.44 KB)

Selective Cutting and Line Planting (SCLP) silvicultural system can be applied in the logged over forest and low potential forest to improve their productivity . The research was aimed to create the growth modelling of Shorea plantations in the line planting system. The research was conducted at research plots of SCLP in logged over forest of PT Gunung Meranti, Central Kalimantan Province. The research plots were divided into three plots of Shorea Jeprosula plantation that planted in 1994 as plot 1, year 1999 as plot 2 and year 2008 in which consisted of 200 samples of trees, respectively. Data of Shorea Jeprosula growth were evaluated by Stella 9.0.2 and SPSS 13, and predicted using table of volume, exponential and polynomial equations. The research result showed that exponential equation was y= 1,0269.e0,012x(R2= 96,02%) and estimated cutting cycle at 37 year old, average polynomial equation was y=0,0297x2+ 0,8208x + 0,3728 (R2= 86,89%) and estimated cutting cycle at 30 year old and group polynomial equations (R2> 95%) estimated cutting cycle at 32 years old. The best model was group polynomial equations that represented exponential equation and average polynomial equation in the yield of volume.

Drone image-based parameters for assessing the vegetation condition the reclamation success in post-mining oil exploration Tirta Negara; I Nengah Surati Jaya; Cecep Kusmana; Irdika Mansur; Nitya Ade Santi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 1: February 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i1.16663

This paper examines drone-based parameters for assessing the success of reclamation activities in post-mining oil-exploration area. The applied drone-based images were multispectral images having visible light and infrared wavelength regions with 5 cm spatial resolution. The main objective of the study is to develop a mathematical model to estimate a reclamation success, through development of success indices. The model were developed by analyzing the relationship between the vegetation success and the digital number values of original and/or synthetic images of drone-based images using 70 sample plots. The mathematical models were developed using a regression analysis, where responses are biomass, volume, and basal area, while the independent variables were original digital number value of images and their derivative synthetic images. The study found that there is a close relationship between parameter biomass stock (ton/ha) and basal area (cm) with both, i.e., original digital number and vegetation indices.

Analysis of Constructed Swamp Forest Vegetation as A Phitoremediation Agent in Coal Mining, South Kalimantan Citra Rahmatia; Iwan Hilwan; Irdika Mansur; Ihsan Noor
Media Konservasi Vol 24 No 1 (2019): Media Konservasi Vol. 24 No. 1 April 2019
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Coal mining activities could potentially interfere with the environment. One of the environmental disturbances in coal mining activities is theformation of acid mine drainage (AMD). AMD management can be done passively through the construction of swamp forest. The constructed swampforest system uses organic material in the form of cow manure which serves as a growing plants’ medium. Phytoremediation is an attempt to usevplant species in the accumulation of heavy metals. This study was aimed to know the AMD management system passively and identify the diversity ofplants in artificial swamp forests. Purposive sampling method with a sample size of 2 x 2m in 10 plots/compartments was used to identify the plantdiversity in constructed swamp forest. The observation was made both before and after AMD flowed. Constructed swamp forest consist of 6compartments (2 sediment pond compartments and 4 swamp compartments). The results of the vegetation analysis found that before the AMD flowed,21 species are still capable growing naturally in constructed swamp forest, however, it became 15 after the AMD flowed. Cyperus iria, Fimbristylisgriffithii, Scirpus juncoides, Ludwigia hyssopifolia, Cyperus platystylis and Monochoria vaginalis are six dominant species that can be used asphytoremediation agent in constructed swamp forest.Keywords: Acid Mine Drainage, constructed swamp forest, phytoremediation

EVALUASI PERTUMBUHAN AREN (Arenga pinnata (Wurmb)) DI LAHAN PASCA TAMBANG PT BERAU COAL KALIMANTAN TIMUR: Growth Evaluation of Sugar Palm (Arenga pinnata (Wurmb)) on Post-Mining Land at PT Berau Coal Kalimantan Timur Istiqomah Samal; Irdika Mansur; Ahmad Junaedi; Hifzil Kirmi
Media Konservasi Vol 25 No 2 (2020): Media Konservasi Vol. 25 No. 2 Agustus 2020
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.25.2.103-112

Kegiatan tambang selalu menimbulkan dampak negatif berupa rusaknya tanah, hilangnya vegetasi dan satwa hingga mengganggu ekosistem, oleh karena itu perlu dilakukan reklamasi dan revegetasi. Revegetasi adalah upaya untuk memperbaiki dan mengembalikan vegetasi yang rusak akibat kegiatan tambang. PT Berau Coal telah melakukan revegetasi dengan menggunakan tanaman lokal yaitu aren (Arenga pinnata). Evaluasi perlu dilakukan untuk mengetahui pertumbuhan tanaman dan status keberhasilan upaya revegetasi tanaman aren yang dilakukan oleh PT Berau Coal. Metode pengambilan data keragaan pertumbuhan aren dilakukan dengan metode Systematic Sampling with Random Start pada lokasi IPD D2, IPD C3.1 dan 2, IPD K dan IPD 6. Data keragaan yang diamati berupa data tinggi, diameter, jumlah daun serta persen hidup dan persen kesehatan tanaman aren. Hasil penelitian menunjukkan bahwa persen hidup aren di areal pasca tambang bervariasi, antara paling rendah 19,35% di lokasi IPD C3.1 dan paling tinggi 87,1% di lokasi IPD D2, sedangkan persen kesehatan paling rendah ditemukan pada lokasi IPD C3.2 yaitu 26,32% dan tertinggi pada lokasi IPD D6 dan IPD C3.1 yaitu 100%. Faktor utama penyebab kegagalan kelangsungan hidup dan pertumbuhan aren yaitu kesalahan pengolahan tanah, naungan, gulma dan serangan hama dan penyakit. Kata kunci: evaluasi, pertambangan, revegetasi, tanaman aren.

The EFFECTS OF CAJUPUT AND CITRONELLA GRASS AS HOST PLANTS ON SANDALWOOD GROWTH : Sandalwood plant growth Joni Tefnai; Irdika Mansur; Nurheni Wijayanto
Media Konservasi Vol 26 No 2 (2021): Media Konservasi Vol. 26 No. 2 Tahun 2021
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.26.2.156-163

Sandalwood (S. album) is native species in eastern Indonesia, especially East Nusa Tenggara (NTT). Its species can produce essential oils and have been known to foreign countries. However, the community's interest in planting sandalwood is low due to a lack of knowledge regarding cultivation techniques and a long harvest period. The purpose of this study was to assess the growth of sandalwood (S. album) with cajuput (M. cajuputi) citronella grass (C. nardus) as the host plant. The research was conducted in Fatunisuan Village, Miomaffo Barat Subdistrict, TTU Regency using a completely randomized design (RAL) of 4 treatments and 3 replications, namely sandalwood without a host (K), sandalwood with cajuput host (CKP), sandalwood with citronella grass as the host plant (CSW), and sandalwood with cajuput and citronella grass as host plants (CKPSW). Data analysis used variance at 95% confidence level. Analysis of variance, which showed that the treatment had a significant effect, was further tested using the Duncan Multiple Range Test (DMRT) at the 5% level. The results showed that the mixed system using two types of hosts, namely lemon grass, cajuput or both, significantly increased the growth of sandalwood in the field. The CKPSW treatment gave the highest percentage increase in sandalwood growth compared to other treatments. Key words: cajuput host, citronella grass host, RAL, sandalwood

KARAKTERISTIK AKAR BEREKTOMIKORIZA PADA Shorea pinanga, Pinus merkusii DAN Gnetum gnemon Melya Riniarti; Irdika Mansur; Arum Sekar Wulandari; Cecep Kusmana
PERENNIAL Vol. 6 No. 1 (2010)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v6i1.192

Morphology and anatomy characteristics often used to identify ectomycorrhizal fungi. We used three Scleroderma spp. (Scleroderma columnare, S. dictyosporum), and S. sinnamariense) and inoculated to Shorea pinanga, Pinus merkusii, and Gnetum gnemon. After 6,8, and 10 months, each root tips were collected to determined hyphae colour, branching pattern, clamp-connection, hartig net and mantle. This result revealed that S. sinnamariense did not form association with S. pinanga and P. merkusii but form association with G. gnemon. On the other hand, S. columnare and S. dictyosporum could form association with all the host plants. S. columnare and S. dictyosporum formed white hyphae while S. sinnamariense formed yellow hyphae with monopodial branching pattern. The depth of hartig net and mantle was increased by timed. Key words: ectomycorrhizal fungi, hartig net, mantle, Scleroderma

PEMANFAATAN SLUDGE INDUSTRI KERTAS SEBAGAI AGEN PEMBENAH TANAH PADA LAHAN BEKAS TAMBANG BATUBARA Enny Widyati; Irdika Mansur; Cecep Kusmana; Iswandi anas; Erdy Santoso
Jurnal Penelitian Hutan dan Konservasi Alam Vol 2, No 2 (2005): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphka.2005.2.2.127-134

Menumbuhkan bibit pada lahan bekas tambang batu bara dihadapkan pada berbagai macam kendala akibat kondisi lahan bekas tambang ini, yang kurang mendukung kurena pH lahan rendah, kandungun bahan organik lahan (BOT) rendah, kapasitas tukar kation (KTK) rendah, kurang seimbangnya unsur hara dan terjadi akumulasi logam berat, Penelitian ini ditujukan untuk memanfaatkan limbah Industri kertas (sludge) sebagai agen pembenah tanah untuk memperbaiki kondisi lahan bekas tambang batubara sehingga menjadi lebih optimum untuk menumbuhkan pada polbag kemudian dicampur secara homogen dengan masing-masing 0%, 25% dan 50% dengan slude dan sludge yang sudah dikomposkan. diberi penyiramansetia[ 3 hari sekaliuntuk menirukan kondisi dilapangansetalah 2 minggudilakukan pengukuran pH.KTK,S Total dan kandungan sulfat tanah. hasil penelitian menunjukan bahwa sludge 50% memberikan hasi yang paling baik, meningkatkan pH 103 %, KTK 167 %. S total don SO, diturunkan sebanyak 87,05 % dibanding kontrol. Penelitian ini menunjukkan bahwa sludge induslri kertas., mempunyai prespek yang baik untuk dikembangkan sebaga: agen pembenah tanah

Co-Authors , Amisnaipa . Wahyudi AA Sudharmawan, AA Abdonia W. Finmeta Abdurrani Muin ABIMANYU D. NUSANTARA Ade Wachjar Aditya Rizky Priatama Aditya Rizkyandana Agnitje Rumambi Agus Ari Subagio Agus Purwito Agus Wahyudi AHMAD JUNAEDI Albasri Albasri Albasri Alwysihah, Hafid Anas Miftah Fauzi Andi Sukendro Andi, Arya Fajar Art C Andry Indrawan Andry Indrawan Anna Juliarti Arief Sabdo Yuwono Armaiki Yusmur Arman Drakel Arman Drakel, Arman Armila R Male Arum Sekar Wulandari Arya Panji Wicaksono Asef Kurniyawan Hardjana Asrianti Arif Asrianti Arif Asrianti Arif Atang Sutandi Aziz, Sandra Bambang S. Purwoko Bramasto Nugroho Budi Hartoyo BUDI HARTOYO, BUDI Budi Prasetya Budi R, Sri W. Budi Tjahjono Butolo, Ivana Cahyo Wibowo Cahyo Wibowo Cahyono Agus Citra Rahmatia D. Wasgito Purnomo Dede J Sudrajat Dede J. Sudrajat Dede J. Sudrajat Dede J. Sudrajat Dede Jajat Sudrajat Dedi Budiman Hakim Destia Ariani Dewi Wulandari Dewi Wulandari Dodik R. Nurrochmat Dodik Ridho Nurrochmat Dwi Guntoro Eddy Nurtjahya Ega Diany Ekawati . ENDANG SUHENDANG Endang Suhendang Enny Widyati Entin Kartini Erdy Santoso Erfanda Irawan Faisal Danu Tuheteru Faisal Danu Tuheteru Faisal Danu Tuheteru Faisal Danu Tuheteru Febrian Ari Nugroho Fikri Maulana, Ahdiar Fitri Arum Sekarjannah Fransisca Yosina Regina Luturmas H Husna Hadi Susilo Arifin Hamim Hamim Hariadi Propantoko Harisson, Rhett D. Harus, Johanes S Haryantini, Baiq Azizah Hasan, Arif Helga Sugiarti Henry Elvin Simamora Hermiati, Hermiati Herry Purnomo Hifzil Kirmi Husada, Muhamad Hadid Husna Husna Husna Husna Husna Husna Hutagaol, Manuntun Paruliah I Nengah Surati Jaya Ihsan Noor Irnayuli R. Sitepu Ishak Yassir Iskandar Iskandar Iskandar Z. Siregar ISKANDAR ZULKARNAEN SIREGAR Istikorini, Yunik Istiqomah Samal Iswandi anas Iwan Hilwan Iwan Perala J Jusniar JOHN DODD Joni Tefnai Julius D. Nugroho Juniarto, Arief Kapp, Gerald Kartika Megawati Kartini Kramadibrata Kartini Kramadibrata Kartodihardjo, Hariadi Lailan Syaufina Lana Saria Latifah K. Darusman Latifah K. Darusman Leti Sundawati Lubis, Rizky Febriana Br Lukman M. Baga Lutfy Abdulah M A Chozin Maman Turjaman Maria Paulina Marlin Sefrila Maya Melati Melya Riniarti Miftahul Mawaddah Miranda H. Hadijah Miska, Moch. Ega Elman Moh. Yani Mona Fhitri Srena Muhammad Ardiansyah Muhammad Masyhuri Muhammad Ridwan Baihaqi Muhd Indarwan Kadarisman Muis, Ridwan Munif Ghulamahdi Nina Mindawati Nitya Ade Santi Nitya Ade Santi Noor Farikhan Haneda Nurhasybi Nurhasybi Nurheni Wijayanto Nurul Khumaida Omo Rusdiana Padilah, Sinta Nur Panca Dewi Panca Dewi Manohara Karti PETER JEFFRIES Prijanto Pamoengkas Prijanto Pamungkas Priyanto Purwono Purwono, Purwono Purwono, Purwono Puspita Laksmi Maharani Rahayu WIDIASTUTI RAHAYU WIDYASTUTI Rahma Sari Rahmah, Hanifa Rahmat Saputra Rahmatia, Citra Rakhman , Rizali Raudhatunisya, Meuthea Najlaa Ria Astuti Rian Adiwicaksono Rian Prakosa Wijaya Rifa’ Atunnisa Rina Kristanti Rina Kristanti Risa Rosita Risa ROSITA Risna Trisnawati Rita Kartika Sari ROSITA, Risa Safriati Safriati Sandra Aziz Sarah Asih FAULINA Sari Yulia Hasibuan Sedek Karepesina Sefrila, Marlin Selvi Chelya Susanty Silalahi, Mangarah Siregar , Elisa Weber Siregar, Ulfah J SOEDARMADI SOEDARMADI Soeryo Adiwibowo Sri Handayani Sri Muryati Sri Muryati Sri Muryati Sri Muryati Sri Wilarso Budi SRIANI SUJIPRIHATI Steffani Silferansti Tak Sudirman Yahya Suharyono Suharyono Surahman Surahman Suria Darma Tarigan Suryanto Suryanto Suwondo Suwondo Taufan Nugraha Tirta Negara Tirta Negara Trikoesoemaningtyas Trikoesoemaningtyas Trikoesoemaningtyas Tuheteru, Edy Jamal Ulfah J. Siregar Ulfah Juniarti Siregar Utami, Desty Sasana Putri Wijayanti, Meilina Wijayanto, Nurheni Yadi Setiadi Yudi Setiawan Zaenal Abidin Zuhriansah, Alfi Laila

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