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All Journal Jurnal Akuakultur Rawa Indonesia ILMU KELAUTAN: Indonesian Journal of Marine Sciences Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Berkala Perikanan Terubuk Jurnal Abdimas BSI: Jurnal Pengabdian Kepada Masyarakat Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture AGROMIX Journal of Aquaculture and Fish Health J-ADIMAS (Jurnal Pengabdian kepada Masyarakat) PENA AKUATIKA : JURNAL ILMIAH PERIKANAN DAN KELAUTAN Jurnal Komunitas: Jurnal Pengabidian Kepada Masyarakat Jurnal Abdi Insani Patria : Jurnal Pengabdian Kepada Masyarakat Jurnal Litbang Kota Pekalongan As-Sidanah : Jurnal Pengabdian Masyarakat International Journal of Social Science, Education, Communication and Economics Jurnal Miyang : Ronggolawe Fisheries and Marine Science Journal PENA ABDIMAS : Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Nusantara Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Jurnal Pengabdian Kepada Masyarakat Belida Indonesia Jurnal Pengabdian Kepada Masyarakat Radisi Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Pengabdian kepada Masyarakat Multidisiplin (JUPENGEN) Jurnal Perikanan JARI : Jurnal Akuakultur Rawa Indonesia
Linayati, Linayati
Program Studi Budidaya Perairan, Fakultas Perikanan, Universitas Pekalongan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Nursing Public Health Social Sciences Other

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PENGUATAN MANAJEMEN INVESTASI KELOMPOK MASYARAKAT PEMBUDIDAYA IKAN NILA KELURAHAN DEGAYU KOTA PEKALONGAN Linayati - Linayati; Tri Yusufi Mardiana; Wijianto Wijianto; Ashari Fahrurrozi; Muhammad Zulkham Yahya
PENA ABDIMAS : Jurnal Pengabdian Masyarakat Vol 4, No 2 (2023): Juli 2023
Publisher : LPPM Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/abdms.v4i2.2247

Abstract

Indonesia as a country that has abundant natural resources, especially waters, causes the fishery sector to become one of the sectors with great potential in development. One of the efforts to improve the human resources of coastal communities is to form institutions at the farmer level, but there is a lack of insight and knowledge about the function of farmer institutions as a forum for the organization. The purpose of this community service is to increase and increase knowledge for the community about the importance of institutions in managing businesses in the fisheries sector, especially in investing. The method used by explaining directly or presenting to community groups who attended the counseling with participants was the MAPAN group from Degayu Village, Pekalongan City with 25 members. The result was that 80% of participants were able to capture knowledge about the importance of institutions for developing fishery businesses after being given counseling and the community was able to compile data on investment in institutions that were formed after receiving counseling. Keywords: Organization, Investment, Society
The addition of papaya seed flour (Carica papaya) to the growth of ‘Cantang’ hybrid grouper fish (Epinephelus fuscoguttatus >< Epinephelus lanceolatus) Muhammad Bahrus Syakirin; Linayati Linayati; Tri Yusufi Mardiana; Sisca Yuniarty; Muhammad Zulkham Yahya
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.27702

Abstract

This research was carried out to examine the effects of papaya seed flour at different doses on the growth of hybrid groupers and to determine the most optimal dose of papaya seed flour on fish growth. A complete randomized design with 4 treatments and 3 replications was used, which treatments consisted of: treatment A Without papaya seed flour (Control), treatment B with 2.5 grams/kg of papaya seed flour, treatment C with 5 grams of papaya seed flour per kg feed, and treatment D of 7.5 grams papaya seed flour/kg feed. Treatment C was found the most optimal treatment, resulting in an absolute biomass value of 26.97 grams and feed conversion ratio of 1.19. Analysis of variance (ANOVA) of the absolute biomass development of the hybrid grouper obtained an F count of 41.3892 higher than F table of 5%, indicating significant effects on the fish growth. The water quality was set at an ideal level, with temperature ranging between 28-29 0C, pH between 7.0-7.5 and salinity between 30-33 ppt.Keywords:Hybrid groupersPapaya seed flourGrowth
Kelimpahan plankton Prorocentrum sp. pada tambak intensif udang vaname (Litopenaeus vannamei) Heri Ariadi; M.B. Syakirin; Tri Yusufi Mardiana; Hayati Soeprapto; Linayati Linayati; Benny Diah Madusari

Publisher : Fakultas Pertanian Universitas Yudharta Pasuruan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35891/agx.v14i2.3668

Abstract

Introduction: Prorocentrum sp. is one of the harmful algae genera that often grows in the aquatic ecosystems of vaname shrimp (L. vannamei) ponds. The purpose of this study was to determine the abundance and dynamics of the Prorocentrum sp. during the shrimp culture period of vaname shrimp (L. vannamei) in intensive ponds. Method: This research was conducted on 4 ponds with a size of 3,200 m2 and a stocking density of 120 fish/m2. The research variables observed were water quality parameters and Prorocentrum sp. which is carried out every 7 days during the shrimp cultivation periods. Result: Based on the results of study, the water quality parameters during the shrimp culture period tend to be stable, except for the water pH parameters which have relatively high afternoon pH fluctuations. Prorocentrum sp. genera during the shrimp culture period, the plankton genus was the most dominant compared to other genera of the Dinoflagellate class. The dynamics of the Prorocentrum sp. abundance on the intensive pond, there was a significant correlation between the solubility of TAN (Total Ammonia Nitrogen) content of 74.8% and the water temperature of 83.3%. Conclusion: The abundance dynamics of Prorocentrum sp. genera during aquaculture period of vaname shrimp (L. vannamei) fluctuated dynamically following the solubility trend of TAN (Total Ammonia Nitrogen) levels and water temperature flux in the pond ecosystem
The addition of papaya seed flour (Carica papaya) to the growth of ‘Cantang’ hybrid grouper fish (Epinephelus fuscoguttatus >< Epinephelus lanceolatus) Muhammad Bahrus Syakirin; Linayati Linayati; Tri Yusufi Mardiana; Sisca Yuniarty; Muhammad Zulkham Yahya
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.27702

Abstract

This research was carried out to examine the effects of papaya seed flour at different doses on the growth of hybrid groupers and to determine the most optimal dose of papaya seed flour on fish growth. A complete randomized design with 4 treatments and 3 replications was used, which treatments consisted of: treatment A Without papaya seed flour (Control), treatment B with 2.5 grams/kg of papaya seed flour, treatment C with 5 grams of papaya seed flour per kg feed, and treatment D of 7.5 grams papaya seed flour/kg feed. Treatment C was found the most optimal treatment, resulting in an absolute biomass value of 26.97 grams and feed conversion ratio of 1.19. Analysis of variance (ANOVA) of the absolute biomass development of the hybrid grouper obtained an F count of 41.3892 higher than F table of 5%, indicating significant effects on the fish growth. The water quality was set at an ideal level, with temperature ranging between 28-29 0C, pH between 7.0-7.5 and salinity between 30-33 ppt.Keywords:Hybrid groupersPapaya seed flourGrowth
Feasibility Study Area and Dissolved Oxygen Carrying Capacity of Silvofishery Pond on the Coastal Area Mardiana, Tri Yusufi; Ariadi, Heri; Rattanavichai, Wutti; Soedibya, Petrus Hary Tjahja; Linayati, Linayati
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.2.201-210

Abstract

The aim of this research are to assess the feasibility of water and soil quality in silvofishery cultivation areas and to determine the environmental carrying capacity of the cultivation. The methods employed include Water Quality Index (WQI), Soil Quality Index (SQI), carrying capacity, and correlation analysis of parameters. The concentration of COD in the silvofishery pond water ranges from 705.34-749.50 mg.L-1, and the total nitrogen content in the soil ranges from 7-8 mg.L-1. The COD parameter in water shows a strong correlation with dissolved oxygen. The soil type parameter silt is correlated with redox potential, while the clay soil type is correlated with sand soil. The variance in data for water and soil quality variables is considered significant as per cluster analysis. The WQI values range from 0.47-0.85, categorized as poor, good, and excellent. The SQI values range from 0.52-0.77, falling into the good and excellent categories. The carrying capacity of dissolved oxygen ranges from 0.7-1.99 kg.ha-1, indicating that if the DO concentration is below this range, oxygen depletion may occur in the silvofishery pond. The research results indicate that the water and soil quality in the silvofishery pond is still sufficiently suitable for silvofishery activities. The carrying capacity of dissolved oxygen in the silvofishery pond is deemed adequate for operational silvofishery activities, ranging from 14.26-15.87 kg.ha-1. This implies that the silvofishery cultivation system is capable of enhancing aquaculture productivity while minimizing environmental pollution in the surrounding aquatic areas resulting from the waste generated during aquaculture operations.
EFEKTIVITAS EKSTRAK DAUN Rhizophora mucronata YANG DITAMBAHKAN KE PAKAN UNTUK MEMACU PERTUMBUHAN IKAN KERAPU CANTANG (Ephinephelus fuscoguttatus X Ephinephelus lanceolatus) Mardiana, Tri Yusufi; Linayati, Linayati; Maulidiya, Elsa; Yahya, Muhammad Zulkham; Handayani, Handayani; Aminuddin, Nur Masita
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 20, No 4 (2024): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.20.4.181-187

Abstract

Penelitian ini ditujukan untuk menguji efektivitas ekstrak daun Rhizopora mucronata dalam meningkatkan biomassa mutlak ikan kerapu cantang serta menentukan dosis optimal yang memberikan hasil terbaik. Mengaplikasikan penelitian eksperimental dengan Rancangan Acak Lengkap (RAL), meliputi 4 perlakuan dan 3 replikasi per perlakuan ditambah dengan dosis ekstrak daun R.mucronata, yaitu pakan 0 mg/kg(A), 1,5 mg/kgpakan (B), 1,7 mg/kgpakan (C), 1,9 mg/kgpakan (D). Parameter yang diamati adalah pertumbuhan biomassa absolut, Pertumbuhan spesifik (SGR), Rasio Pemanfaatan Pakan (FCR), Efisiensi pakan (EP), Survival rate (SR) dan kualitas air. Ikan kerapu diberikan pakan sebanyak 3% per hari dan frekuensi pakan sebanyak 3 kali sehari selama 30 hari. Hasil penelitian menunjukan bahwa ikan kerapu yang diberi perlakuan daun R.mucronata 1,7 mg/kg pakan menghasilkan rerata pertumbuhan tertinggi sebesar 24,19 g dengan laju harian 2,69%, FCR 1,09, EP 91%, sintasan 100%, suhu 28–29 °C, pH 7,6–7,9 , salinitas 29–31 ppt dan DO 7,2–7,7 ppm.
Edukasi Pentingnya Nilai Gizi Ikan Dan Peningkatan Ketrampilan Olahan Ikan Pada Siswa Mas Fatkhul Qowim Desa Api-Api Kecamatan Wonokerto Kabupaten Pekalongan Mardiana, Tri Yusufi; Linayati, Linayati; Suharto, Slamet; Oktaviani, Nila; Permana, Rukmi Ayu; Yahya, Muhammad Zulkham; Madusari, Benny Diah; Farhat, Yusna Felia
J-ADIMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 12, No 1 (2024)
Publisher : (STKIP) PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/j-adimas.v12i1.5740

Abstract

Pentingnya peningkatan nilai gizi masyarakat dapat dilaksanakannya dengan GEMARIKAN. Tujuan pengabdian ini sebagai penambah transfer ilmu siswa MAS Fatchul Qowim dalam hal nilai gizi ikan, pentingnya konsumsi ikan untuk kesehatan, serta memberikan pengetahuan dan ketrampilan berbagai olahan ikan. metode yang digunakan dalam pelaksanaan kegiatan ini dengan memberikan penjelasan, menjawab pertanyaan, diskusi dan tentang nilai gizi ikan dan praktek secara langsung aneka olahan ikan dengan sasaran siswa MAS Fatchul Qowim. Hasil yang dibuat dengan pengenalan beberapa metode mengelolah ikan salah satunya asap cair dan beberapa produk hasil olahan seperti fish roll, ikan asap cair, bandeng presto, dan bandeng goreng. Kata kunci: GEMARIKAN; gizi ikan; olahan ikan; pengabdian 
Pengemasan dan Pemasaran Produk Hasil Olahan Ikan Lele di Kelompok Pembudidaya Ikan Sebagai Produk Unggulan Kabupaten Tuban, Jawa Timur Munir, Miftachul; Prayogo, Luhur Moekti; Linayati, Linayati
Jurnal Abdimas BSI: Jurnal Pengabdian Kepada Masyarakat Vol 7, No 2 (2024): Agustus 2024
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Bina Sarana Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31294/jabdimas.v7i2.18472

Abstract

Potensi budidaya air tawar mulai digemari masyarakat pembudidaya dimana perikanan tangkap mulai mengalami overfishing.  Kabupaten Tuban memiliki potensi perikanan budidaya, salah satu pembudidaya air tawar yang ada yaitu di Kelurahan Perbon, Kabupaten Tuban. Kelompok Pembudidaya Ikan (Pokdakan) “Jabrisan Rumbuk Dadi Makmur” merupakan salah satu kelompok pembudidaya ikan lele yang terbentuk pada bulan November 2022 tetapi anggotanya rata-rata memulai budidaya dari tahun 2014. Kelompok yang terdiri dari 10 pembudidaya ini memiliki tujuan utama yaitu bersinergi dalam hal pemasaran, karena budidaya lele jika tidak paham akan triknya maka dipastikan tidak bisa bertahan. Permasalahan mitra yang ada saat ini adalah istri-istri pembudidaya rata-rata berprofesi sebagai ibu rumah tangga sehingga akan sangat disayangkan jika memiliki bahan untuk pembuatan olahan namun tidak dimanfaatkan. Pelatihan diawali dengan pemaparan materi, menyiapkan bahan-bahan olahan, praktik langsung pembuatan olahan ekado dan kaki naga, pengemasan dan pemasaran produk hasil olahan serta diakhiri dengan evaluasi.  Dari hasil angket peserta pelatihan peningkatan pengetahuan sebesar 46.2% yaitu dari sebelum diadakan pelatihan 45% dan setelah diadakan pelatihan 91.2%, artinya bahwa ada peningkatan pengetahuan tentang materi dan praktek yang disampaikan dalam pelatihan.
Pengaruh tepung jinten hitam (Nigella sativa) dalam pakan terhadap pertumbuhan ikan kakap putih (Lates calcarifer) Mardiana, Tri Yusufi -; Linayati, Linayati; Syakirin, Muhammad Bahrus; Aliyah, Imalatul; Yahya, Muhammad Zulkham
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 8, No 1 (2024): SAT edisi Maret
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v8i1.21557

Abstract

Abstrak Tujuan dari penelitian ini dapat mengidentifikasi pengaruh perbedaan dosis tepung jinten hitam dan menemukan dosis optimal  ke pakan untuk mendorong pertumbuhan ikan kakap putih. Hewan uji yang digunakan adalah ikan kakap putih. Penelitian memakai Rancangan Acak Lengkap, meliputi 4 treatment dengan 3 replikasi, dengan penambahan dosis bubuk jinten hitam yaitu 0 gram/100 gram pakan (A), 3,5 gram/100 gram pakan (B), 5,5 gram/100 gram pakan (C), dan 7,5 gram/100 gram pakan (D). Parameter yang diamati adalah pertumbuhan biomassa absolut, SGR, SR dan kualitas air sebagai data pendukung. 3 kali pemberian pakan dalam sehari. Hasil penelitian membuktikan pemberian pakan ikan kakap putih 3,5 gram/100 gram pakan ditambah dengan bubuk jintan hitam menghasilkan rerata pertumbuhan biomassa mutlak yang lebih tinggi sebesar 15,24 gram, SGR 2,15%, SR 100%, dan kualitas air, salinitas (29-31 ppt), suhu (28-30 0C), pH (7,0-7,6), dan DO (7,2-7,7 ppm) Kata kunci:  Ikan Kakap Putih, Jinten Hitam, Pertumbuhan, SGR Abstract The goal of this study is to identify the effect of different doses of black cumin flour and find the optimal dose to feed to encourage the growth of white snapper. The test animal used was white snapper. The study used a completely randomized design, including 4 treatments with 3 replications, with the addition of doses of black cumin powder, namely 0 grams/100 grams of feed (A), 3,5 grams/100 grams of feed (B), 5,5 grams/100 grams of feed (C), and 7,5 grams/100 grams of feed (D). Parameters observed were absolute biomass growth, SGR, SR and water quality as supporting data. 3 times feeding in a day. The results proved that feeding white snapper 3,5 grams/100 grams of feed supplemented with black cumin powder resulted in higher mean absolute biomass growth of 15,24 grams, SGR of 2,15%, SR of 100%, and water quality, salinity (29-31 ppt), temperature (28-30 0C), pH (7,0-7,6), and DO (7,2-7,7 ppm). Keywords: Black Cumin, Growth, SGR, White Snapper
Pemanfaatan daun rhizophora mucronata sebagai feed additive terhadap efektivitas pertumbuhan udang vannamei Mardiana, Tri Yusufi; Yahya, Muhammad Zulham; Linayati, Linayati; Syakirin, M. Bahrus; Pratama, Hildan; Oktaviani, Nila
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 8, No 2 (2024): SAT edisi September
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v8i2.22412

Abstract

Daun mangrove R.mucronata berpontesi sebagai feed additive udang vannamei karena sering dimanfaatkan untuk sumber zat aktif (effervescent). Tujuan penelitian ini mendapatkan hasil pertumbuhan terbaik dosis yang dapat dimanfaatkan di pakan udang vannamei untuk pertumbuhan. Udang vanname menggunakan PL-20 yang diisi 10 ekor per wadah. Wadah diacak secara pengundian dengan metode RAL 4 perlakuan dengan 3 kali pengulangan per perlakuan yaitu dengan perlakuan penambahan daun R.mucronata yang diterapkan perlakuan A (1,9  mg/Kg pakan), perlakuan B (2,1 mg/Kg pakan), perlakuan C (2,3 mg/Kg) pakan, dan perlakuan D (2,5 mg/Kg pakan). Data terbaik yang dihasilkan ada diperlakuan D (2,5 mg/Kg) dengan pertumbuhan 6,98 g, FCR 1,05 efisiensi pakan 95,08% dengan SR 100% disemua perlakuan. Kualitas air yang dihasilkan seperti suhu 28,5 – 30,2°C, salinitas 31 – 33 ppt, dan pH 8,0 – 8,2 masih dalam nilai yang masih ditoleransi udang vannamei.
Co-Authors Abdul Wafi Abi Ardana Abi Ardana Abi Ardana Ade Irma Nahdliyyah Adhitya Wisnu Prasetyo Adimahsyaf, Nur Fadhilah Adinasti Antafani Agustin, Septianti Akkapin, Supaphorn Alfisha, Tisie Hawa Aliyah, Imalatul Aminuddin, Nur Masita Antafani, Adinasti Ardana, Abi Ashari Fahrurrozi Asyari, Hasanudin Awaliyah Feni Furoidah Awaliyah Feni Furoidah Azhari Fahrurrozi B. Sarian, Hazen Mellai Xyza Bagus Kuncoro Aziz Benny Diah Madusari Bramantiar Rizkyansyah Budianto Budianto Dewi, Ayu Sari Dinna Firstiany Diyah Ayu Rosediana Erika Sari Rosiana Fadjar Basuki Fahrurrozi, Ashari Fajar, Dwi Aryo Farhat, Yusna Felia Fatchul Huda Fatmala, Ike Hadi Pranggono Hayati Soeprapto Heri Ariadi Heri Ariadi Heri Ariadi Ike Fatmala Ikhsan, Mauliddin Khoerul Ilyas, Tarbudi Intan Ria Ivandari Ishadiyanto is Ishadiyanto Ishadiyanto Ishadiyanto Ishadiyanto Ivandari, Intan Ria Leonardus Bayu Nugroho Lilis Handayani Luhur Moekti Prayogo M Zulkham Yahya M. Zulkham Yahya M.B. Syakirin Maghfiroh * Maghfiroh Maghfiroh Maghfiroh Maghfiroh Maharani, Kayla Mardiana, Tri Yusufi - Maulidiya, Elsa Ma’ruf Dwi Meilissa Chintya Wijaya Miftachul Munir Miftah Ulumuddin Mohammad Bahrus Syakirin Muhamad Agus Muhammad B Syakirin Muhammad Zulkham Yahya Muhammad Zulkham Yahya Muhammad Zulkham Yahya Muhammad Zulkham Yahya Muhammad Zulkham Yahya Muhammad Zulkham Yahya Muhammad Zulkham Yahya Mujtahidah, Tholibah Nauval Rabbani Nila Oktaviani Nila Oktaviani Nisa, Silvianita Khoirun Nugraha, Mada Widi Nugroho, Leonardus Bayu Nur Fadhilah Adimahsyaf Nur Tri Jayanto Pamungkas, Muhammad Aji Bagus Pamungkas1, Muhammad Aji Bagus Permana, Rukmi Ayu Pinandoyo Pinandoyo Pratama, Hildan Purnama, Candra Adi Rabbani, Nauval Ramadhani, Farchan Mushaf Al Rattanavichai, Wutti Restu Puji Astuti Reza Fachriansyah Rukmi Ayu Permana Septianti Agustin Septianto, Bagus Shella Pratama Sihombing, Juita Lusiana Sisca Yuniarty Slamet Suharto, Slamet Soedibya, Petrus Hary Tjahja Sulistiana, Ana Syakirin, M Bahrus Syakirin, M.B. Syam, Dzulfiqar Ammar Syamsuddin, Muhammad Dicky Tamaulina Br Sembiring Tegar Aji Prasetyo Tisie Hawa Alfisha Tri Yusufi Mardiana Tristiana Yuniarti Tristiana Yuniarti Wijianto Wijianto Wijianto, Heri Ariadi Wiradana, Bahtiar Hanafi Wulannoto, Hendri Yahya, M Zulham Yahya, M. Zulham Yahya, Muhammad Zulham Yahya, Muhammad Zulkham Yuyun Suprapti