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All Journal SAINS DAN MATEMATIKA Jurnal Simetris Pendidikan Biologi Jurnal Pelangi SEMIRATA 2015 Jurnal Riset Fisika Edukasi dan Sains Turbo : Jurnal Program Studi Teknik Mesin JOURNAL OF CHEMISTRY AND EDUCATION (JCAE) Lentera Acitya Journal Of Health Jurnal Teknik Mesin Cakram Best Journal (Biology Education, Sains and Technology) Jurnal Ilmiah ASET Jurnal Teknik Mesin J-KIP (Jurnal Keguruan dan Ilmu Pendidikan) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Jurnal Kajian Ruang Jurnal Pengabdian Masyarakat : Pemberdayaan, Inovasi dan Perubahan Pharmaceutical Sciences and Research (PSR) Electrician : Jurnal Rekayasa dan Teknologi Elektro Indo-Fintech Intellectuals: Journal of Economics and Business Jurnal Teknologi dan Vokasi Jurnal Kesehatan Lentera Acitya Jurnal Multidisipliner Kapalamada Perkara: Jurnal Ilmu Hukum Dan Politik Jurnal Pendidikan Teknologi Pertanian Jurnal Ilmiah Sistem Informasi Elementary Education Research
Putri Pratiwi
Universitas Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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PERFORMANSI ALAT PENGASAPAN IKAN DENGAN SISTEM ROTARI HORIZONTAL Perdana, Mastariyanto; Hafni, Hafni; Yulianti, Lusi; Romi, Romi; Alfith, Alfith; Pratiwi, Putri; Nurzal, Nurzal
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.69-77

Abstract

One of the fish preservation techniques that are widely used today is the smoking technique. In general, the smoking process was still traditional and used a conventional oven. This method is an easy way to smoke fish. The purpose of this study was to determine the efficiency of the fish smoking device using a horizontal rotary system. This smoking device consists of a smoking chamber, a furnace, a rotary catfish holder, a DC motor, gears, and a chain. The capacity of this rotary system smoker is 9 kg of wet fish. The fish used in this study were catfish and skipjack fish. This smoking uses the result of burning cinnamon. Cinnamon will produce smoke which is useful for smoking fish. The weight of wet fish in one smoke in this study was 8 kg. The smoking method has a standard ratio of wet fish weight to dry fish weight of 4: 1. For smoking catfish, after smoking for 2 hours at a temperature of 80 oC - 90 oC, the weight of catfish becomes 2 kg. For smoking skipjack tuna, after smoking for 2.5 hours at a temperature of 80 oC - 90 oC, the weight of skipjack tuna becomes 2 Kg. From the test results, it can be concluded that the rotary smoking system is very good for use as a fish smoking tool because it has a high enough efficiency compared to traditional tools such as ovens where the traditional smoking method takes 36 hours and the oven system smoking method takes as long as 12 hours.
PENINGKATAN SIFAT GLASS-CERAMICS FLY ASH TERVITRIFIKASI DENGAN PENAMBAHAN 30 WT.% ALUMINIUM SILIKAT DAN PENGATURAN SUHU SINTER Nurzal, Nurzal; Pratiwi, Putri; Handra, Nofriady; Perdana, Mastariyanto; Hafni, Hafni
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.116-121

Abstract

This study investigates the effects of adding 30 wt.% aluminum silicate and varying sintering temperatures on the density and hardness of vitrified fly ash glass ceramics. Fly ash, a waste by product from coal combustion at the Suralaya thermal power plant has long posed environmental challenges. To mitigate these impacts, this research explores its utilization in producing glass ceramics. The samples were prepared as cylindrical samples with a diameter of 15 mm and thickness of 5 mm, and were fabricated using uniaxial pressing at 120 MPa. The samples were sintered at 1050, 1100, and 1150 °C with a heating rate of 5 °C/min. Experimental results reveal that adding 30 wt.% AS significantly improves the density from 2.31 to 2.51 g/cm³ and hardness from 443 to 2418.55 MPa compared to 100 wt.% fly ash. Optimal density and hardness were achieved at a sintering temperature of 1150 °C.
ANALISIS KEMAMPUAN REPRESENTASI MATEMATIS SISWA DALAM MENYELESAIKAN SOAL CERITA MATERI HIMPUNAN DITINJAU DARI TIPE KEPRIBADIAN DAVID KEIRSEY Pratiwi, Putri; Ruswana, Angra Meta; Nuraida, Ida
J-KIP (Jurnal Keguruan dan Ilmu Pendidikan) Vol 6, No 1 (2025): FEBRUARI
Publisher : Faculty of Teacher Training and Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/j-kip.v6i1.15790

Abstract

Penelitian ini bertujuan untuk mendeskripsikan kemampuan representasi matematis siswa dalam menyelesaikan soal cerita materi himpunan ditinjau dari tipe kepribadian David Keirsey yaitu: guardian, artisan, rational dan idealist. Jenis penelitian ini adalah deskriptif kualitatif dengan subjek penelitian siswa kelas VII A MTs Al-Ishlah Gandrungmangu. Teknik pengumpulan data dalam penelitian ini dengan pemberian angket The Keirsey Temprament Sorter (KTS), tes kemampuan representasi matematis, dan wawancara. Hasil penelitian ini menunjukan bahwa subjek-1 tipe kepribadian guardian mampu memenuhi indikator representasi simbolik dan verbal pada soal 1. Mampu memenuhi indikator representasi verbal dan tidak mampu memenuhi indikator simbolik pada soal 2. Mampu memenuhi indikator representasi gambar, simbolik dan verbal pada soal 3. Subjek-2 tipe kepribadian artisan mampu memenuhi indikator representasi simbolik dan verbal pada soal 1. Mampu memenuhi indikator representasi simbolik dan verbal pada soal 2. Mampu memenuhi indikator representasi simbolik dan verbal tetapi tidak mampu memenuhi indikator representasi gambar pada soal 3. Subjek-3 tipe kepribadian rational mampu memenuhi indikator representasi simbolik dan tidak mampu memenuhi indikator representasi verbal pada soal 1. Mampu memenuhi indikator repressentasi verbal dan tidak mampu memenuhi indikator simbolik pada soal 2. Mampu memenuhi indikator representasi gambar, simbolik dan verbal pada soal 3. Subjek-4 tipe kepribadian idealist mampu memenuhi indikator representasi simbolik dan verbal pada soal 1. Mampu memenuhi indikator representasi simbolik dan verbal tetapi pada representasi simbolik jawaban kurang tepat pada soal 2. Mampu memenuhi indikator representasi simbolik dan verbal tetapi tidak mampu memenuhi indikator representasi gambar pada soal 3.
Potensi Pemenuhan Ruang Terbuka Hijau (RTH) Berdasarkan Guna Lahan Pratiwi, Putri; Rahman, Boby
Jurnal Kajian Ruang Vol 5, No 1 (2025): Maret
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v5i1.44521

Abstract

ABSTRAKRuang Terbuka Hijau (RTH) adalah area memanjang/jalur dan/atau mengelompok, yang penggunaannya lebih bersifat terbuka, tempat tumbuh tanaman, baik yang tumbuh secara alamiah maupun yang sengaja ditanam. Seiring dengan perkembangan wilayah yang pesat, ketersediaan RTH semakin terancam oleh peningkatan pembangunan infrastruktur dan perumahan. Kondisi ini menyebabkan penurunan kualitas lingkungan dan kehidupan, seperti peningkatan suhu, berkurangnya kualitas udara, dan menurunnya daerah resapan air. Menurut Permen ATR KBPN No. 14 Tahun 2022 luasan Ruang Terbuka Hijau dialokasikan 10% untuk RTH privat dan 20% lainnya untuk RTH publik. Tujuan dari penelitian ini adalah mengkaji kesesuain dan ketersediaan Ruang Terbuka Hijau dari tujuh studi kasus. Metodologi yang digunakan adalah diskriptif yaitu menggunakan studi litelature. Terdapat tujuh studi kasus yang dikaji dalam penelitian ini. Hasil dari tujuh jurnal yang dikaji adalah Ruang Terbuka Hijau Publik yang mendominasi yaitu hutan kota, rekreasi, dan jalur hijau. Namun untuk Ruang Terbuka Hijau Privat yang mendominasi yaitu sawah dan kebun.Kata Kunci: Ruang Terbuka Hijau, Kesesuaian, Ketersediaan ABSTRACKGreen Open Space is an elongated area/path and/or cluster, whose use is more open, where plants grow, both those that grow naturally and those that are deliberately planted. According to the Law, the area of Green Open Space is allocated 10% for private RTH and another 20% for public RTH. The aim of this research is to examine the suitability and availability of Green Open Space from seven case studies. The methodology used is descriptive, namely using literature studies. There are seven case studies examined in this research. The results of the seven journals studied were that public green open spaces dominated, namely urban forests, recreation and green lanes. However, private green open spaces that dominate are rice fields and gardens.Keywords: Green Open Space, Suitability, Availability
Pengaruh Modal Usaha Dan Lokasi Usaha Terhadap Volume Penjualan Pada Usaha Mikro di Labuhanbatu Selatan. Pratiwi, Putri; Ulya, Basyarul; Syafriyeti, Rahmi
Indo-Fintech Intellectuals: Journal of Economics and Business Vol. 5 No. 1 (2025): Indo-Fintech Intellectuals: Journal of Economics and Business (2025)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ifijeb.v5i1.2827

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh modal usaha dan lokasi usaha terhadap volume penjualan pada usaha mikro di Labuhanbatu selatan. Pendekatan yang digunakan dalam penelitian ini adalah kuantitatif dengan jenis penelitian deskriptif dan asosiatif. Sampel yang digunakan dalam penelitian ini adalah 100 pelaku usaha mikro yang dipilih secara purposive sampling, dengan kriteria usaha yang sudah beroperasi minimal satu tahun dan memiliki omzet yang terukur. Data dikumpulkan melalui wawancara terstruktur dan kuesioner, kemudian dianalisis menggunakan regresi linier berganda dengan bantuan software SPSS. Hasil penelitian menunjukkan bahwa modal usaha dan lokasi usaha memiliki pengaruh positif dan signifikan terhadap volume penjualan. Modal usaha memberikan kontribusi yang besar dalam meningkatkan kapasitas operasional dan pemasaran, sementara lokasi usaha yang strategis juga berperan penting dalam menarik konsumen. Temuan ini memberikan implikasi bagi pelaku usaha mikro untuk memperhatikan kedua faktor tersebut guna meningkatkan volume penjualan dan daya saing usaha mereka.
PENGARUH METODE PERMAINAN ULAR TANGGA TERHADAP HASIL BELAJAR SISWA PADA SUBTEMA ORGAN TUBUH MANUSIA DAN HEWAN DI KELAS V SD NEGERI 40 BANDA ACEH Pratiwi, Putri; Syafrina, Alfiati; Israwati., Israwati
Elementary Education Research Vol 5, No 2 (2020): MEI 2020
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/primary.v5i2.9982

Abstract

Siswa sekolah dasar masih sangat erat hubungannya didalam dunia bermain, sedangkan belajar untuk siswa sekolah dasar sangat dituntut. Dalam proses belajar pada siswa sekolah dasar sangat bisa dihubungkan antara belajar dan bermain. Salahsatu alternatif yang dilakukan untuk dapat meningkattkan hasil belajar adalah dengan menerapkan metode permainan Ular Tangga, yaitu proses pembelajaran sambil bermain. Penelitian ini berupaya meningkatkan hasil belajar siswa berdasarkan penilain pada pembelajaran kurikulum 2013. Sehingga penelitian inikkah bertujuuan untuk mengetahui pengaruh penerapan metode permainan Ular Tangga terhadap hasil belajjar siswwa pada Subtema Orggan Tubuh Maanusia dan Hewwan di kelas Vb SD Negerii 40 Banda Aceh. Pendekkatan yang akan diggunakandidalam penelitian ini kuanttitatif. Teknik pengolahan data digunakan uji-t. Jenis penelitian eksperimen semu atau Pre Experimental Designs dengan model One Grroup Pretest Posttest Design. Poppulasipada dalam peenelitian ini adalah kelas V SD Negeri 40 Banda Acehh yang terrdiri dari dua kelas yaitu Va 28 siswa dan Vb 26 siswa sehingga jumlah populasi adalah 54 siswa. Teknik untuk menngambill sampelnya adallah dengan Sampling Purposive. Sampel di dalam penelitian ini sebanyak 26 siswa di kelas Vb. Teeknik pegumpulan data tersebut akan dilakukan denggan memberikan tes soal berbentuk choice berjumlah 25 butir pada subtema organ tubuh manusia dan hewan pembelajaran 2 dan pembelajaran 5. Hasil penelitian menunjukkaaan bahwa pada taaaraf signnifikan = 0,05 dan dk = n + n - 2 = 26 + 26 2 = 50 maka daftar dalam distribussi t dengan = sehingga diperolehkan= 1,67 karena , yaitu 12,4 1,67. Dengan demikian ditolak dan H diterima, sehingga metode permainan Ular Tangga yang diajarkan subtema organ tubuh manusia dan hewan pembelajaran 2 dan pembelajaran 5 di kelas Vb dapat mempengaruhi haasil belajar peserta diddik ini. Dengan demiikian dapat disimpulkan bahwasannya penerapan metode permainan Ular Tangga ini berpengaruh terhadap hasiil belajjar siswanya pada subtema orgganan tubuh manusiia dan hewan dii kelas V SD Negeri 40 Banda Aceh.
The Effect of Pressure on the Manufacturing Process of Composites Made from Candlenut Shells and Candlenut Shell Charcoal/Epoxy on Density and Microstructure gustio mitro; Perdana, Mastariyanto; Pratiwi, Putri
Jurnal Teknik Mesin Vol 14 No 2 (2024): Jurnal Teknik Mesin Vol.14 No.2 October 2024
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2024.v14.i2.56-63

Abstract

Candlenut shell waste has not been widely utilized, especially in the field of material technology. In this study, innovation was carried out on the management of candlenut shell waste with the aim of reducing candlenut shell waste into something useful as a composite of candlenut shell/epoxy. Candlenut shells are ground into powder and sieved on the powder with a mesh of 50-80 with a powder size of 177-297µm. To obtain shell charcoal powder, candlenut shells are carbonized after that ground into powder and sieved with a mesh of 100-200 with a powder size of 74-149µm. While for epoxy resin, it is mixed with a ratio of resin to hardener (2:1). The mixture ratio of candlenut shell composite%, candlenut shell charcoal%, and epoxy resin% is (45:10:45). The printing of the test sample used the printing method, the mold was pressed with a pressure of 21 kg/cm2, 25 kg/cm2, 28 kg/cm2, 32 kg/cm2, 35 kg/cm2 for 24 hours. The sample testing in this study was observation of the microstructure and density testing. In the density test and observation of the microstructure, where the best pressure among the other pressures was at a pressure of 32 kg/cm2 because it can be seen from the density value of 1.14????????/????????3 and the relative density result value of 87%. The things that affect the density test and observation of the microstructure are the comparison at each pressure, the increase in pressure that produces a composite with good physical properties, namely the results of the density data prove an increase in its density and observations of its microstructure prove an increase in the density of the good powder particle composite.
Design and Structural Performance Evaluation of a CNC Plasma Cutting Machine Frame Pratama, Aga; Anrinal, Anrinal; Pratiwi, Putri; Yanto, Asmara
Jurnal Teknik Mesin Vol 15 No 1 (2025): Jurnal Teknik Mesin Vol.15 No.1 April 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2025.v15.i1.8-14

Abstract

Plasma cutting is a widely used process for cutting metal plates using a high-temperature electric arc. Conventional systems are manually operated, which limits cutting precision and efficiency. To address this, a CNC plasma cutting machine was designed with a focus on structural reliability. The machine frame was designed to support automated motion along X, Y, and Z axes, enabling precise plasma head movement. The overall machine dimensions are 3000 mm × 1500 mm × 1000 mm, with a work area of 2400 mm × 1200 mm. Structural components were modeled using CAD software and analyzed using the Finite Element Method (FEM) to evaluate deformation, stress distribution, and safety factors. The structural analysis revealed maximum displacements of 4.14 µm and 3.83 µm in the X and Y units, respectively. The highest von Mises stress was found to be 56.57 MPa on the X unit and 50.19 MPa on the Y unit. The minimum safety factors were 4.41 for the X unit and 2.36 for the Y unit, indicating a safe and robust structural design. The results confirm that the designed machine frame meets mechanical integrity requirements for automated plasma cutting operations. The low deformation and acceptable stress levels ensure cutting accuracy and operational reliability. This design may serve as a foundation for future improvements or implementation in manufacturing environments.
SERVICE ANALYSIS AND BUSINESS MANAGEMENT OF MUHAMMADIYAH SURYA MANDIRI SHARIA PRODUCER COOPERATION Millisa, Cut; Pratiwi, Putri; Adelina, Dian; Rifaldy Rizky, Muhammad; Sinta, Irada
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 2 No. 2 (2023): JANUARY
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v2i2.128

Abstract

Sharia cooperative is a form of cooperative that has principles, goals, and activities based on the achievement of Islamic sharia, namely the Koran and Assunah. In general, this cooperative is a cooperative business entity that carries out its business activities based on sharia principles. And Cooperative services to members are services provided by Cooperatives in advancing the business of its members. Therefore, some cooperatives provide and improve services to the businesses of their members very well. The management of this sharia cooperative business is to open outlets that sell various needs ranging from food, school necessities, and various daily needs. This cooperative has also opened several businesses such as savings and loans, and benevolent loans, which are loans that do not take advantage. It is from these businesses that this Islamic cooperative earns income. So it is urgent to examine the level of service and management of the cooperative. The methods used in this cooperative This research is a purposive sampling research method, namely the method of determining research locations that are carried out deliberately based on certain considerations.
PANTAI SARANA PEMBELAJARAN PPKn: MENGEMBANGKAN KESADARAN DAN PARTISIPASI MAHASISWA DALAM MELINDUNGI LINGKUNGAN Sopiandy, Dede; Jasrudin, Jasrudin; Murdiansyah, Eko Bambang; Hariyadi, Slamet; Arni, Arni; Anastasya, Anastasya; Rahmat, Alibin; Mudassir, Mudassir; Pratiwi, Putri; Herlinda, Herlinda
Jurnal Pengabdian Masyarakat: Pemberdayaan, Inovasi dan Perubahan Vol 5, No 5 (2025): JPM: Pemberdayaan, Inovasi dan Perubahan
Publisher : Penerbit Widina, Widina Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59818/jpm.v5i5.2132

Abstract

This study developed an environment-based learning model for Pancasila and Civic Education (PPKn) by utilizing coastal areas as educational tools to increase student awareness and participation in protecting the environment. This study adopts a participatory action research method that integrates experiential learning and place-based education approaches through a series of educational activities in the form of games and community service to clean up the beach. These activities not only enrich theoretical understanding of civic values but also encourage the application of these values through concrete, environment-based actions. The results of the study show that these activities successfully increased students' ecological awareness, social involvement, and responsibility as environmentally conscious citizens. These findings contribute to the development of more contextual and applicable Civic Education learning, while also opening up opportunities for replicating similar learning models in other institutions.ABSTRAKPenelitian ini mengembangkan model pembelajaran Pendidikan Pancasila dan Kewarganegaraan (PPKn) berbasis lingkungan dengan memanfaatkan kawasan pantai sebagai sarana edukatif untuk meningkatkan kesadaran dan partisipasi mahasiswa dalam melindungi lingkungan. Penelitian ini mengadopsi metode penelitian tindakan partisipatif yang mengintegrasikan pendekatan experiential learning dan place-based education melalui rangkaian kegiatan edukatif berupa permainan dan kerja bakti membersihkan pantai. kegiatan ini tidak hanya memperkaya pemahaman teoretis tentang nilai-nilai kewarganegaraan, tetapi juga mendorong penerapan nilai tersebut melalui aksi nyata yang berbasis lingkungan. Hasil penelitian menunjukkan bahwa kegiatan ini berhasil meningkatkan kesadaran ekologis, keterlibatan sosial, dan tanggung jawab mahasiswa sebagai warga negara yang peduli lingkungan. Temuan ini memberikan kontribusi pada pengembangan pembelajaran PPKn yang lebih kontekstual dan aplikatif, sekaligus membuka peluang bagi replikasi model pembelajaran serupa di institusi lain.
Co-Authors Adelina, Dian Aga Pratama Alfiati Syafrina, Alfiati Alfith Alfith Ali Amran Ana Witra Anastasya, Anastasya Andi Sukainah Anggraini , Puput Anita Desiani Anrinal Anrinal Archaqie, Haikal Nur Rachmanrachim Arfidian Rachman Aritonang, Vicky Robianto Arni Arni Ashari, Lucky Asmara Yanto asriati, weni widya Astuti - Bambang Cahyono Bambang Suprihatin Basyarul Ulya boby rahman, boby Cantika, Amelya Dwifa, Dima Eko Bambang Murdiansyah Erismar Amri Fachrurrozi, Ahmad Fitra Soni, Idel gustio mitro Hafni Hafni Hendriwan Fahmi Herlinda Herlinda, Herlinda Herry Cahyana Ida Nuraida Idris, Maulana Fahmi Irada Sinta Israwati., Israwati Jasmi Jasmi Jasrudin, Jasrudin Julia, Nur Tri Khasanah, Eka Robiul Kossay, Methodius Lidya Novita Sari Mahdian Mahdian, Mahdian Mastariyanto Perdana Meiny Suzery Millisa, Cut Mudassir Mudassir, Mudassir Muhammad Syaifullah, Muhammad Neng Sari Nofriady Handra, Nofriady Nuri Gustia Nurzal, Nurzal Parham Saadi, Parham Putri, Yecha Febrieanitha Rahmat, Alibin Rahmi Syafriyeti Rifaldy Rizky, Muhammad Romi Romi, Romi Rozi Saferi, Rozi Ruswana, Angra Meta Saputra, Fiko Saputra, Georgery Silvi Trisna Slamet Hariyadi Sopiandy, Dede Suparman, Sri Rahayu Suwardi Talib, Nur Qalbi Tri Maryanto Umi Kalsum Yanto, Subari Yulianti, Lusi yunasfi yunasfi Yurian , Frizky Zakia, Alya