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All Journal Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Ilmu Perairan (Aquatic Science) Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Journal of Geoscience, Engineering, Environment, and Technology Eklektik : Jurnal Pendidikan Ekonomi dan Kewirausahaan Riau Journal of Empowerment JURNAL PHOTON JURNAL PENDIDIKAN TAMBUSAI Daun: Jurnal Ilmiah Pertanian dan Kehutanan Asian Journal of Aquatic Sciences Unri Conference Series: Community Engagement ECOTONE Jurnal Zona Journal of Rural and Urban Community Empowerment SEHATI: Jurnal Kesehatan Dinamika Lingkungan Indonesia CANANG: Jurnal Pengabdian Masyarakat Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) Jurnal Ilmu-Ilmu Kehutanan EcoNews BERBAKTI: Jurnal Pengabdian Kepada Masyarakat Jurnal Perikanan dan Kelautan
Ridwan Manda Putra
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Strategi Pengelolaan Limbah Padat Domestik Berbasis Pemberdayaan Masyarakat Di Kota Dumai Sri Ramadhani; Ridwan Manda Putra; Syahril Nedi
Jurnal Zona Vol 7, No 1 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v7i1.79

Abstract

The problem of domestic solid waste has become a national issue, including in Dumai City, as seen in the Landfill (TPA) in Dumai City (Mekar Sari Landfill, South Dumai District). Many and easy domestic solid waste are found in the landfill, which is caused by not being able to be handled considering that 3 sanitary landfills are full and limited human resources, land and tools. This study aims to determine the implementation and constraints, environmental, social and economic impacts of domestic solid waste management in West Dumai District and South Dumai District. The research was conducted in several stages, starting from an initial survey based on field observations and interviews using variables of waste types and sources in West Dumai District and South Dumai District, the volume of waste, the impact on the environment, social and economic, the form of management implementation, and the constraints possessed in the management. This study used non-probability sampling with snowball sampling method in sampling techniques. This method is used in connection with the collection of interview-based information/data, and multilevel questionnaires, ranging from waste producers, management officers to supervisors of domestic waste management in West Dumai District and South Dumai District of Dumai City. Based on the results of the study, domestic solid waste in West Dumai and South Dumai Districts of Dumai City will continue to increase along with the higher volume of waste produced compared to what can be handled by managers (less than 60%) while the obstacles they have cannot be resolved. Suboptimal management of domestic solid waste has a negative impact on the environment in West Dumai and South Dumai Districts. Among them are triggering easy flooding when it rains, to contamination of water sources used by humans. From a social aspect, the comfort of Dumai residents is disturbed, including their daily activities. From an economic point of view, flooding has an impact on income levels (economic aspects). Flooding (tidal) is increasingly routine in West Dumai and South Dumai Districts with an increasingly tight frequency, namely 2 times / month, which is caused by the topography of the area (lower than other areas) and clogged waterways due to garbage carried by the water flow. The suggestion in this study is to propose management collaboration with companies operating in Dumai in supporting the operation of the 3R TPS, such as financing for operators, providing machines, or for facility maintenance.
Strategi Pengelolaan Lingkungan RSUD Rokan Hulu Menuju Green Hospital Megariani Megariani; Ridwan Manda Putra; Bayhakki Bayhakki
SEHATI: Jurnal Kesehatan Vol 3, No 2 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/sehati.v3i2.42

Abstract

The purpose of this study was to estimate the existing conditions of Rokan Hulu Hospital in an effort to apply the principles of green hospital and determine strategy for managing the hospital's environment towards green hospital. Hospitals have a positive impact on a good quality of life, but also have the potential to be the biggest source of pollution to the surrounding environment. This study uses a qualitative approach with descriptive research methods. The results showed that the Rokan Hulu Hospital only met the requirements for implementing the Green Hospital elements at 27.9%, which is still relatively low. Based on the SWOT analysis, the environmental management strategy that can be carried out by Rokan Hulu Hospital towards green hospital is in quadrant I, namely supporting an aggressive strategy by implementing an SO (Strenghts-Opportunities) strategy, which was utilizing all strengths as much as possible by taking advantage of existing opportunities . The strategy that can be carried out at Rokan Hulu Hospital is to improve the performance of hospital leadership and staff in developing the green hospital concept technology-based waste, establishing cooperation with relevant agencies or stakeholders, developing green open land that already exists as an attraction for hospitals.
Strategi pengelolaan wisata alam berkelanjutan Sungai Gagak di Kabupaten Kampar Lisa Fitriyani Simatupang; Ridwan Manda Putra; Viktor Amrifo
Jurnal Zona Vol 7, No 2 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v7i2.98

Abstract

Koto Mesjid Village is one of the tourist villages in Riau Province that has one of the natural attractions, the Gagak River. However, at present, it is known that the number of tourists visiting the Gagak River is decreasing, due to the increasingly poor infrastructure in the area. To conduct sustainable management of nature tourism from ecological, economic and social aspects so that it can be utilized for current and future generations, it is necessary to conduct research to determine the existing conditions of Gagak River and formulate appropriate management strategies for natural tourism of Gagak River. Data collection methods in the research consisted of field studies and document studies. Data analysis techniques consist of descriptive analysis and MDS analysis with Raptourism software. The results showed that the level of multidimensional sustainability was categorized as moderately sustainable (61.39%). Based on the results of the study, it is known that the ecological dimension is very sustainable, the social dimension is quite sustainable and the economic dimension is less sustainable. Sustainable management strategies for natural tourism of Gagak River to increase the value of sustainability can be done by: (1) Improving accessibility, (2) Developing tourism potential around the river, (3) Implementing local wisdom values as an effort to preserve the environment, (4) Increasing the capacity of managers to improve performance and ability in managing tourist attractions, and (5) Maintaining good relationship patterns to optimize institutional functions.
Strategi pengelolaan wisata alam berkelanjutan Sungai Gagak di Kabupaten Kampar Lisa Fitriyani Simatupang; Ridwan Manda Putra; Viktor Amrifo
Jurnal Zona Vol 7, No 2 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v7i2.98

Abstract

Koto Mesjid Village is one of the tourist villages in Riau Province that has one of the natural attractions, the Gagak River. However, at present, it is known that the number of tourists visiting the Gagak River is decreasing, due to the increasingly poor infrastructure in the area. To conduct sustainable management of nature tourism from ecological, economic and social aspects so that it can be utilized for current and future generations, it is necessary to conduct research to determine the existing conditions of Gagak River and formulate appropriate management strategies for natural tourism of Gagak River. Data collection methods in the research consisted of field studies and document studies. Data analysis techniques consist of descriptive analysis and MDS analysis with Raptourism software. The results showed that the level of multidimensional sustainability was categorized as moderately sustainable (61.39%). Based on the results of the study, it is known that the ecological dimension is very sustainable, the social dimension is quite sustainable and the economic dimension is less sustainable. Sustainable management strategies for natural tourism of Gagak River to increase the value of sustainability can be done by: (1) Improving accessibility, (2) Developing tourism potential around the river, (3) Implementing local wisdom values as an effort to preserve the environment, (4) Increasing the capacity of managers to improve performance and ability in managing tourist attractions, and (5) Maintaining good relationship patterns to optimize institutional functions.
Strategi pengelolaan lingkungan ekowisata Sungai Gelombang di Desa Sipungguk Kecamatan Salo Kabupaten Kampar Ari Prima Dewi; Ridwan Manda Putra; zulkarnain zulkarnain
Jurnal Zona Vol 7, No 2 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v7i2.99

Abstract

Sungai Gelombang Ecotourism located in Sipungguk Village, Salo District, Kampar Regency, Riau Province which has the potential to be developed as an environmentally ecotourism. This study aims to analyze the existing conditions of the Wave River ecotourism environment and determine the right strategy in managing the Wave River ecotourism environment. The research was conducted from October 2022 to January 2023. Primary data were obtained through questionnaires, direct observation in the field, documentation and in-depth interviews with the community, visitors and stakeholders, as well as secondary data obtained from references related to ecotourism environmental management. Data were analyzed using SWOT analysis. The results of the analysis show that the existing conditions of the Sungai Gelombang ecotourism ecology which includes rainfall, current, brightness, river area, color, depth, water temperature, pH, water bottom, vegetation, and biota are included in normal conditions that support ecological functions, Existing economic, socio-cultural, and institutional conditions show the need to increase the role of the surrounding community and government. Based on the SWOT analysis of Sungai Gelombang ecotourism management with the S-O (Strength - Opportunity) strategy. The strategy is to increase the role of the surrounding community and government with programs that support environmental conservation
Strategi pengelolaan lingkungan ekowisata Sungai Gelombang di Desa Sipungguk Kecamatan Salo Kabupaten Kampar Ari Prima Dewi; Ridwan Manda Putra; zulkarnain zulkarnain
Jurnal Zona Vol 7, No 2 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v7i2.99

Abstract

Sungai Gelombang Ecotourism located in Sipungguk Village, Salo District, Kampar Regency, Riau Province which has the potential to be developed as an environmentally ecotourism. This study aims to analyze the existing conditions of the Wave River ecotourism environment and determine the right strategy in managing the Wave River ecotourism environment. The research was conducted from October 2022 to January 2023. Primary data were obtained through questionnaires, direct observation in the field, documentation and in-depth interviews with the community, visitors and stakeholders, as well as secondary data obtained from references related to ecotourism environmental management. Data were analyzed using SWOT analysis. The results of the analysis show that the existing conditions of the Sungai Gelombang ecotourism ecology which includes rainfall, current, brightness, river area, color, depth, water temperature, pH, water bottom, vegetation, and biota are included in normal conditions that support ecological functions, Existing economic, socio-cultural, and institutional conditions show the need to increase the role of the surrounding community and government. Based on the SWOT analysis of Sungai Gelombang ecotourism management with the S-O (Strength - Opportunity) strategy. The strategy is to increase the role of the surrounding community and government with programs that support environmental conservation
Pengkayaan Sumberdaya Ikan di Oxbow Melalui Penerapan Artifisial Habitat Oleh Nelayan Desa Rantau Baru Kecamatan Pangkalan Kerinci Kabupaten Pelalawan Riau Ridwan Manda Putra; Sukendi Sukendi; Dewita Dewita; Budijono Budijono; Syahril Nedi
CANANG: Jurnal Pengabdian Masyarakat Vol 3, No 2 (2023)
Publisher : PELANTAR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/canang.v3i2.36

Abstract

This community dedication is aimed at informing the community about the creation of a new fish habitat by floating a set of artificial habitat units in the selected zone based on oxbow batimetry, so that the fish resources in the oxbows remain available. The dedication activities were carried out in the Rantau Baru Village, Pangkalan Kerinci  district of Pelalawan Regency, and the delivery of material was carried out on August 2, 2023. There are 30 participants in this selection, consisting of the village equipment and the oxbow fishermen in the New Rantau Village. The materials to be provided for this dedication are: (a) Oxbow and its uses; (b) biodiversity of fish and public waters; (c) threats to fish biodiversity; (d) artificial habitat; and (e) methods of creation, operation, and maintenance of artificial habitat. The method used in the implementation of this activity is to survey the field first, then conduct deliberations in the form of lectures and interactive discussions, followed by demonstrating the artificial creation of habitats and placing the tools in the oxbow. The results of the evaluation of the change in knowledge carried out on 30 participants in the service to the community showed that 5 people (16.7%) have been able to absorb the material given with the preaching very well, 13 people (43.3%) can absorb materials given with good preaching, 10 people (33.3%) can absorb material with sufficient preaching, and 2 people (6.7%) could absorb material with less preaching. As for the impact on implementation in the field, there has been a process of dissemination of knowledge to fishermen carried out by community leaders. So that the diversity of fish in public waters (especially the oxbow lake) that exists in the Rantau Baru Village can be well awakened.
Strategies to Control Illegal Fishing in the Waters of Pasir Limau Kapas District, Rokan Hilir Regency Irawan, Willy; Putra, Ridwan Manda; Fauzi, Muhammad
Jurnal Perikanan dan Kelautan Vol 29, No 2 (2024): June
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.29.2.238-244

Abstract

The magnitude of the potential has led to the emergence of illegal fishing activities that cause losses to the state and surrounding communities. One of the water zones in Indonesia that has potential and is prone to illegal fishing is the Malacca Strait, including the waters of Rokan Hilir Regency. The research aims to formulate illegal fishing control strategies to prevent and stop illegal fishing activities. This research was conducted in Pasir Limau Kapas District, Rokan Hilir Regency, which consists of Panipahan Kepenghuluan, Panipahan Laut Kepenghuluan, and Panipahan Darat Kepenghuluan from March to July 2023. The primary data are obtained directly through observation and interviews, and secondary data is obtained from relevant agencies and institutions. Data analysis uses a quantitative approach to formulating illegal fishing control strategies using SWOT and descriptive analysis methods. The SWOT analysis results of controlling illegal fishing activities is a W-O (Weakness - Opportunities) strategy by considering existing opportunities and minimizing internal problems that become weaknesses. Some strategies that can be formulated include increasing surveillance in Pasir Limau Kapas Waters, increasing socialization of the impacts of illegal fishing and maintaining marine ecosystems, and improving fisheries support facilities in Pasir Limau Kapas District
Pengaruh Optimisme dan Literasi Digital terhadap Kinerja Pengawas Pendidikan Se–Kabupaten Kampar Kamal, Fakhrul; Burhanuddin, Dudung; Putra, Ridwan Manda
Jurnal Pendidikan Tambusai Vol. 5 No. 3 (2021): 2021
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v5i3.2569

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh optimisme dan literasi digital terhadap kinerja pengawas pendidikan Se – Kabupaten Kampar. Sabjek penelitian ini adalah pengawas pendidikan yang berjumlah 49 orang. Objek penelitian ini adalah optimisme dan literasi digital terhadap kinerja pengawas pendidikan Se – Kabupaten Kampar, dan upaya yang dilakukan untuk meningkatkan literasi digital serta pemanfaatan teknologi dalam menunjang kinerja pengawas pendidikan. Metode pengumpulan data yang digunakan adalah menguji tiga variabel maka jenis penelitian kuantitatif dengan metode ex post facto. Tiga variabel yang di uji yaitu dua variabel bebas (independen variable) yang terdiri dari Optimisme (X1), dan Literasi Digital (X2), serta satu variabel terikat (dependent Variable) yaitu kinerja pengawas (Y). Teknik pengumpulan data yang digunakan yaitu Kuesioner atau daftar pertanyaan yang dibuat dalam bentuk sederhana dengan metode pertanyaan tertutup yang diberikan kepada pihak responden sehingga memperoleh data tentang optmisme, literasi digital dan kinerja pengawas pendidikan. Hasil Penelitian Diperoleh pengaruh yang signifikan antara variabel optimisme (X1) dan literasi digital (X2) terhadap kinerja pengawas (Y) Pendidikan Se-Kabupaten Kampar, yang besar pengaruhnya 58,60% dengan tafsiran tinggi, karena masih terdapat sebesar 41,40% ditentukan oleh faktor lain yang tidak menjadi bagian dari penelitian ini. Upaya yang dilakukan untuk meningkatkan literasi digital dalam menunjang kinerja pengawas pendidikan yaitu perlunya (1) penyusunan program pengawasan; (2) pelaksanaan program pengawasan; (3) evaluasi hasil pelaksanaan program pengawasan; dan (4) pembimbingan dan pelatihan professional guru dan atau kepala sekolah.
Sustainable Management of Catchment areas of the Koto Panjang Hydroelectric Reservoir Aan Nur Rahmat; Mubarak Mubarak; Ridwan Manda Putra
Jurnal Perikanan dan Kelautan Vol. 25 No. 2 (2020): June
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.25.2.94-102

Abstract

Riau Province has many lakes and reservoirs, one of which is the Koto Panjang Hydroelectric Reservoir, Sustainability of the Koto Panjang Hydroelectric Reservoir Unstable water continuity, drought during the dry season and flooding during the rainy season have caused this power plant to be not optimal, one of the ways that can done to overcome complications in certain areas. Koto Panjang Hydroelectric Reservoir Water is that by using the analysis of the Koto Panjang Hydroelectric Reservoir we can arrange steps in managing the maintenance of the Koto Panjang Hydroelectric Reservoir. Sustainability analysis conducted using the RAP-catchment area application on three dimensions, namely ecology, economics and social, the results of the analysis that have been carried out on the ecological dimension address an index of 52.31 which is classified as quite sustainable in the social dimension category 41.98 which is classified as less sustainable. To improve the index of sustainability in the management of water areas, several management directives are needed, namely reforestation or greening of open land related to rivers and conducting training in environmentally friendly agriculture to provide and support the protection of farming communities and communitiesrelated to fire, develop the potential of natural resources such as tourist attractions as alternative livelihoods to increase community income and increase socialization and encourage people in need in hydropower reservoir catchment areas.
Co-Authors ', Efawani ', Muhammad ', Susanti ', Windarti ', Yanti . Zulfan Aan Nur Rahmat Adytia Eko Maulana Afrizal, Deden Agrina Agrina Agrina Agrina Agrina Agrina Aldila Hasanah Amalia Prafitra Harman Amanda Amanda Aminuyati Andri Hendrizal Anggi Pramana Aprinata, Rio Aras Mulyadi Ardeline, Mela Ardilah Rahmadani Ari Prima Dewi Ari Prima Dewi Asep Permana Asmul Fauzi Harahap, Asmul Fauzi Asshabri, Fadli Atika Azharo Atika Azharo Atira Diniya Bambang Dewo Bagus Bayhakki Bayhakki Bayhakki Bayhakki Belgian Tambunan Benny Heltonika Bintal Amin Budijono, Budijono Burhanuddin, Dudung Can, Hafez Adefl Chaidir P Pulungan Chaidir Pulungan Chendy Prima Sari Chitra Hermawan Dadang Mashur Dalan Trenget Manik Dedes Handayani Dedi Afandy Defri Yoza Deni Efizon Desi Heltina Desrila Rahmania Dewi Sartika Dewita Dewita Dicki Hartanto Dina Situmorang Driani, Gema Illahi Dwi Azelina Rizki Dwi Yanti Tanjung Eddiwan Eddiwan Eddiwan Kamaruddin Efawani Efawani Efawani, Efawani Efriyeldi, Efriyeldi Eka Hariyani Eko Prianto, Eko Elfridayani, Tri Eli Yana Siregar Elizal, Elizal Elly Anggriani Purba Eni Sumiarsih Erni Setiawati Erwina Citra Sejati Gulo Eva Susanna Faddillah Kurnia Fadilah, Annisa Fajar Malini Fathoni Ahmad Febrina Hanum Fitri, Nurlaila Fitri, Nurlaili Fitriyanti Permanasari Friska Girsang Fuad Ardiansyah Siregar Gita Melisa Yolanda Gultom, Imelda Sofia Loren Gusnar Simangunsong Hamidi, Wilzam Hartanto, Farhan Sidiq Heffiana Heffiana Helperida Gurning Henri Siahaan Herman Herman Hermawita, Ade Hutajulu, Magdalena Dwiyani Ica Hayati Indra Lesmana Indradewa, Rhian Irawan, Willy Irna ramadhani Isjoni Isjoni Isma Mulyani Jihan Nabila Sajidah Julisa, Ulfania Julisa, Ulfilia Kamal, Fakhrul Karnila, Rahman Karnila Khoirunisyah, Khoirunisyah Kika Ananda Krisna Mailin Simanjuntak Kurniawan, Ahmad Jati Lilis Kurnia Lilis Kurnia Lilis Kurnia Lisa Fitriyani Simatupang Lita Febriani Luthfiani, Firda Mariani Silvia Br Sihombing Mayarni Mayarni Megariani Megariani Megawati Megawati Meimi Laillah Melana Sari Melia Setia Rindu Melinda, Devi Meuthia Pangerani Mimin Sundari Nasution Mohd Zulkurnain Mubarak Mubarak Mubarak Mubarak Mufidah Dwi Suci Mufidah, Muna Muhammad Fauzi Muhammad Luthfi Muhammad Syafii Musadad Musadad Muslimatun ' Mutia Pradina Nia Novita Nicken Nicken Nicken, Nicken Nofika Srijayanti Nofrizal Nofrizal Nora Oktavia Simanjuntak Novalina Pinem, Novalina Novita Fauzi Nur Asiah Nur Asiah Nuraini El Fajri Nuraini Nuraini Nurlaili ' Olfa Riyana Padmayni, Padmayni Paridah Paridah Phivi Andriza Pradina, Mutia Purwoko, Agus Putrayudha, Rizky Akbar Putri Permatasari Putri, Dea Ananda Radhiyah Radhiyah Radhiyah Radhiyah Radhiyah, Radhiyah Rahmania, Desrila Rahmat, Aan Nur Ramayanda Gusni Rasoel Hamidy Resfianto Resfianto Rini Anggraini, Rini Ririn Sofiani Riska Puspita Sari Risky Arya Putri Rivco Hastwoyundra Rizka Aprisanti Rizki, Aisya Ayu Rosita Nurdiyana Sally Rizky Sam Syahra Jihad Santrina Banjarnahor Sari, Desi Maya Sari, Fadhila Cynthia Sembiring, Rinawati Shofiyah Tika Ashilah Siburian, Sades Simarangkir, Lisa Meisim Siregar, Rida Amaliah Siska Alemina Ginting Siska D Ompusunggu Siti Muryati, Siti Sitorus, Jefri Valdano Sofyan Husein Siregar Sri Rahayu Rezki Ardiyanti Sri Ramadhani Sri Wahyuni Sukendi Sukendi Sukron, M. Supiana, Supiana Susanti ' Susanti, Lasri Suwondo Suwondo suwondo suwondo Syahril Nedi Syamsiar, Syamsiar T Nisari Tasman Adi Tengku Dahril, Tengku Tengku Nurhidayah Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Triani Wulandari Trinop Sagiarti Utami, Niken Yufira Viktor Amrifo Wahyu Budiharti Widya Oktavia Nainggolan Winda Lestari Windar, Windarti Windarti ' Windarti Windarti Windarti Windarti Windi Syahrian Wiwit Kartika Sari Wulandary, Marchya Audhya Yofi Kontesa Yolla Novita Sari, Yolla Novita Yosep Juven Yobi F Sitanggang Yudhi Ardianto Yuliati Yuliati Yulindra, Ade Yurisman ' Yurisman Yurisman Yurisman Yurisman Yusmarini Yusmarini Yusni Ikhwan Siregar Zahtamal Zahtamal Zhonada, Anggun Zuhirman Zuhirman Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnaini Zulkarnaini