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All Journal Jurnal Filsafat Biosfer: Jurnal Tadris Biologi Jurnal Diskursus Islam Rekayasa Mesin Jurnal Teknik Mesin Jurnal Penelitian Pertanian Terapan Jurnal Rekayasa Material, Manufaktur & Energi Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Teknik Mesin Prosiding Seminar Nasional Teknik Mesin Jurnal Pembelajaran dan Biologi Nukleus Jurnal Engine: Energi, Manufaktur, dan Material Best Journal (Biology Education, Sains and Technology) Jurnal Ilmiah Manajemen Kesatuan Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Mekanik Terapan Jurnal Pendidikan dan Pembelajaran Indonesia (JPPI) Journal of Technomaterial Physics Jurnal Akuntansi, Manajemen, Bisnis dan Teknologi International Journal of Multidisciplinary Research and Literature (IJOMRAL) Dulang: Jurnal Pengabdian Kepada Masyarakat Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis Jurnal Polimesin JAPEPAM, Jurnal Pengabdian kepada Masyarakat
Nusyirwan Nusyirwan
Teknik Mesin Politeknik Negeri Padang
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Enhancing the Crack Resistance of Polyester Resin Composites with Rice Husk Fiber Reinforcement Nusyirwan, Nusyirwan; Hijar, Yul; Malik, Adam
Journal of Technomaterial Physics Vol. 7 No. 1 (2025): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v7i1.18895

Abstract

Polymers have been widely developed as alternative materials to replace metal materials due to various advantages such as low density and an easy manufacturing process. Still, polymers have many disadvantages, including not having high mechanical strength, easy to crack when hit by impact. One of the materials studied is an unsaturated polyester polymer widely used for composite matrices in vehicle structural components, aircraft and ship bodies, and vehicle components. One of the studied fibers is rice husk particle fiber. The study of cracks is crucial because it causes the material to no longer be able to support the load according to the previous plan and causes failure to occur more quickly. One way to overcome material failure due to cracks in the composite material is to prevent crack propagation by adding reinforcing material. In this study, a composite material was made using rice husk fiber to increase the crack resistance of the polyester composite matrix. From the results of crack testing, there is a tendency to increase the percentage of rice husks by 5%, 10%, 15%, and 20%. The value expected to be obtained for determining the crack resistance of the material is the value of the stress intensity factor (K1). The largest K1 value was obtained at the variable percentage of rice husk 15% with MMA as much as 10% and MEKP 4% obtained a stress intensity factor of 1,558 MPa.m0.5; this value can increase the value of the stress intensity factor of pure polyester K1 by 0.667 MPa.m0.5 which shows an increase of 233.58%.
Development of Pocket Book of Tissue Culture Based on Case Method Harahap, Fauziyah; Sihombing, Josephine Gloria Margareth; Suriani, Cicik; Nusyirwan, Nusyirwan; Edi, Syahmi; Daulae, Abdul Hakim; Nursamsu, Nursamsu
Biosfer: Jurnal Tadris Biologi Vol 14 No 2 (2023): Biosfer: Jurnal Tadris Biologi
Publisher : UNIVERSITAS ISLAM NEGERI RADEN INTAN LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/biosfer.v14i2.17305

Abstract

The use of pocket book as a learning media is still limited. This will make it difficult for students to understand the material. The purpose of this research was to determine the feasibility results of tissue culture pocket book, the level of product feasibility through responses from lecturers, students and to see the effectiveness of tissue culture pocket book products especially in tool sterilization and in vitro propagation topics. The research method uses R&D with 4D models from Thiagrajaan. The results of the needs analysis showed that 66,7% of students had difficulty in understanding the material of tool sterilization and in vitro propagation. In curriculum analysis using the KKNI curriculum. The feasibility level of the assessment product from media experts obtained the criteria "Very worthy" with percentage of 91,67%, assessment of material experts with the criteria "worhty" with percentage of 84,74% and assessment results of learning design experts with the criteria "Very worthy" with percentage of 91,67%. Then the lecturer's response obtained results with the criteria "Worthy" with a percentage of 83,75%. In small group trials with scores of 89.4% and limited field trials of 90%. The disseminate stage obtained an N-Gain score of 0,56 with the "medium" criteria. ABSTRAK: Penggunaan buku saku sebagai media pembelajaran masih terbatas. Hal ini akan menyulitkan mahasiswa dalam memahami materi pembelajaran. Tujuan dari penelitian ini adalah untuk mengetahui hasil kelayakan buku saku kultur jaringan, tingkat kelayakan produk melalui tanggapan dari dosen, mahasiswa dan untuk melihat efektivitas produk buku saku kultur jaringan khususnya pada topik sterilisasi alat dan perbanyakan in vitro. Dalam penelitian ini menggunakan R&D dengan model 4D Thiagrajaan. Hasil analisis kebutuhan menunjukkan bahwa 66,7% mahasiswa mengalami kesulitan dalam memahami materi sterilisasi alat dan propagasi in vitro. Kurikulum yang digunakan adalah KKNI. Tingkat kelayakan produk penilaian dari ahli media diperoleh hasil dengan kriteria "Sangat layak" dengan persentase 91,67%, penilaian ahli materi dengan kriteria "Layak" dengan persentase 84,74% dan hasil penilaian ahli desain pembelajaran dengan kriteria "Sangat layak" dengan persentase 91,67%. Kemudian respon dosen diperoleh hasil dengan kriteria "Layak" dengan persentase 83,75%. Dalam uji coba kelompok kecil diperoleh skor 89,4% dan uji coba lapangan terbatas 90%. Tahap disseminate memperoleh skor N-Gain 0,56 dengan kriteria "sedang".
PELATIHAN 3D PRINTING UNTUK JURUSAN KENDARAAN RINGAN SMK DHUAFA PADANG Sumiati, Ruzita; Nofriadi, Nofriadi; Fajri Arsyah, Ahmad Hasnul; Nusyirwan, Nusyirwan; Adriansyah, Adriansyah; Leni, Desmarita; Nasirwan, Nasirwan
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 5 No. 02 (2025): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v5i02.412

Abstract

3D Printing training has been implemented as part of efforts to develop technical competence in vocational education, especially for students of the Light Vehicle Department at SMK Dhuafa Padang. This study aims to assess the effectiveness of 3D Printing training in improving students' skills in the application of additive manufacturing technology in the automotive sector. The training methods applied include the delivery of theoretical materials, technical demonstrations, and exercises. Evaluation of the effectiveness of the training was conducted through comparative analysis of pre-test and post-test results, which aims to measure the improvement of participants' competence before and after attending the training. The results of data analysis showed a significant increase in students' mastery of concepts and technical skills, especially in the use of 3D printing technology for component manufacturing. This training is expected to be a relevant and adaptive learning model, in order to prepare SMK graduates to face the dynamics of the automotive industry which is increasingly based on technology and innovation
Model Altman’s Z-Score dan Springate Memprediksi Financial Distress (Studi Kasus Perusahaan Sub Migas yang Tercatat di BEI Tahun 2017 - 2020) nusyirwan, Nusyirwan; Kusdiana, Yayu; Tinaria, Lisa; Zubir, Zubir; Masril, Masril
Jurnal Akuntansi, Manajemen, Bisnis dan Teknologi Vol 3 No 1 (2023): Jurnal Akuntansi, Manajemen, Bisnis dan Teknologi - Edisi Februari 2023
Publisher : Sekolah Tinggi Ilmu Ekonomi Mahaputra Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56870/ambitek.v3i1.78

Abstract

The increase in the average need for oil and gas for both the public and the industrial sector has forced Indonesian oil and gas companies to look for new oil reserves in the midst of declining oil and gas production from year to year. If Indonesian sub-oil and gas companies cannot survive in these conditions, they are likely to experience losses that will affect their financial position and will eventually face financial distress or be threatened with bankruptcy. The purpose of this research is to determine the prediction of bankruptcy in sub-oil and gas companies in Indonesia that are listed on the IDX. 2017 – 2020 using Altman's Z – score and Springate models. Using the purposive sampling method in sampling, 11 oil and gas mining sub-sector companies were listed on the Indonesia Stock Exchange in 2017 – 2020 from a total population of 44 companies obtained from the website www.idx.co.id as secondary data. The score of each model is calculated mathematically with the Microsoft Excel Office 2019 application, and then performs calculations to find the most accurate bankruptcy prediction model. The results show that the Altman Z-Score and Springate models in predicting bankruptcy have a low level of accuracy.
Pengaruh Kualitas Pelayanan dan Kualitas Produk terhadap Kepuasan Pelanggan UNIQLO Living World Pekanbaru Hidayat, Rahmadani; Ardianto, Bagus; Nusyirwan, Nusyirwan
Jurnal Akuntansi, Manajemen, Bisnis dan Teknologi Vol 4 No 1 (2024): Jurnal Akuntansi, Manajemen, Bisnis dan Teknologi - Edisi Februari 2024
Publisher : Sekolah Tinggi Ilmu Ekonomi Mahaputra Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56870/ambitek.v4i1.115

Abstract

Abstract The aim of this research is to determine the effect of service and product quality on UNIQLO Living World Pekanbaru customer satisfaction. The respondents for this research were 100 people using random samples. The data analysis technique used to answer the hypothesis is multiple regression, classical assumption test, F hypothesis test, t hypothesis test, coefficient of determination using SPSS 25 and Microsoft Excel 2016. The research results show that service quality and product quality have a positive influence. influences student satisfaction both partially and simultaneously. From the results of the coefficient of determination test (R2), it is known that the two independent variables contribute 52.9% in influencing the dependent variable, namely customer satisfaction in choosing UNIQLO Living World Pekanbaru products.
Strategi Pemasaran Produk Susu Etawa Dengan Berbagai Rasa Di Bandar Khalipah Nasirwan, Nasirwan; Kholis, Azizul; Nusyirwan, Nusyirwan; Hasyim, Hasyim; Tua Sibarani, Choms Gary Ganda
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 6 No. 4 (2025): Edisi Oktober - Desember
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v6i4.7131

Abstract

Pengabdian ini bertujuan untuk menganalisis dan mengimplementasikan strategi pemasaran produk susu etawa dengan berbagai variasi rasa di Kecamatan Bandar Khalipah guna meningkatkan daya saing dan penetrasi pasar lokal. Kegiatan dilaksanakan dengan metode deskriptif kualitatif melalui observasi, wawancara, studi dokumentasi, serta pendampingan langsung kepada mitra. Tahapan kegiatan meliputi diskusi identifikasi masalah, penyusunan modul pelatihan, uji coba produk skala kecil, forum diskusi kelompok (FGD) dengan pakar, hingga pendampingan legalitas usaha. Hasil menunjukkan bahwa inovasi variasi rasa (kopi, herbal, dan buah-buahan) mampu meningkatkan minat beli konsumen secara signifikan, terbukti dari peningkatan penjualan Mitra 1 dari rata-rata 18-27 liter susu original menjadi 20-45 cup varian baru per hari, serta Mitra 2 dari 14-23 liter susu original menjadi 10-28 cup varian baru per hari. Implementasi bauran pemasaran (produk, harga, distribusi, dan promosi) secara terintegrasi terbukti efektif dalam memperluas segmen pasar dan memperkuat daya saing produk.
KAJIAN TEKNO EKONOMI PAKET TEKNOLOGI BAKTERI PERAKARAN PEMACU PERTUMBUHAN TANAMAN (BP3T) PUPUK KANDANG DAN NANO PESTISIDA SERAI WANGI PADA USAHA TANI KAKAO DI KABUPATEN LIMA PULUH KOTA Wahyuni, Sri; Rahma, Haliatur; Trisno, Jumsu; Martinius, Martinius; Noveriza, Rita; Reflin; Yuliani, Sri; Nusyirwan, Nusyirwan; Nefri, Jhon
Jurnal AGRISEP JURNAL AGRISEP VOL 19 NO 01 2020
Publisher : Badan Penerbitan Fakultas Pertanian, Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.533 KB) | DOI: 10.31186/jagrisep.19.1.68-82

Abstract

Plant Growth Promoting Rhizobacteria (PGPR) plus manure technology is designed to control the vascular streak dieback disease (VSD) which attacks cocoa plants, and improve the plant growth. This research aims to compare the cost of using conventional manure and PGPR plus manure technology. This research was designed in a descriptive quantitative approach using cencus data of 43 people who use PGPR plus manure in Kabupaten Limapuluh Kota. The result shows that the conventional fertilizer costs is more expensive than the PGPR plus manure formula. Therefore, it PGPR plus manure formula is recommended for the cacao farmers in Kabupaten Limapuluh Kota.
Pemanfaatan Whatsapp dalam Meningkatkan Aspek Non Kognisi pada Mahasiswa Jurusan Biologi Herkules, Herkules; Edi, Syahmi; Nusyirwan, Nusyirwan; Akita, Amalia
Jurnal Pendidikan dan Pembelajaran Indonesia (JPPI) Vol. 4 No. 4 (2024): Jurnal Pendidikan dan Pembelajaran Indonesia (JPPI), 2024 (4)
Publisher : Yayasan Pendidikan Bima Berilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53299/jppi.v4i4.751

Abstract

Penelitian ini bertujuan untuk menganalisis efektivitas penggunaan WhatsApp grup dalam meningkatkan aspek non-kognisi mahasiswa Jurusan Biologi di Universitas Negeri Medan. Aspek non-kognisi yang diukur meliputi konsep diri, etos belajar, motivasi belajar, sikap, dan kreativitas. Metode penelitian yang digunakan adalah pra eksperimen dengan desain one group pra dan pos tes. Sampel adalah mahasiswa jurusan Biologi yang mengikuti mata kuliah fisiologi tumbuhan yang berjumlah 32 responden. Instrumen pengukuran menggunakan kuesioner dengan Teknik pengumpulan data pengujian sebelum dan sesudah pemberian Intervensi WhatsApp. Analisis data menggunakan uji Wicoxon. Hasil penelitian menunjukkan bahwa penggunaan WhatsApp grup secara signifikan meningkatkan semua aspek non-kognisi yang diukur. Peningkatan yang paling signifikan terlihat pada aspek kreativitas mahasiswa (p=0,001), diikuti oleh sikap (p=0,001) dan etos belajar (p=0,001), konsep diri (p=0,001) dan motivasi belajar (p=0,011). Penelitian ini menyimpulkan bahwa WhatsApp grup adalah alat yang efektif untuk meningkatkan aspek non-kognisi mahasiswa dan dapat digunakan secara lebih luas dalam konteks pendidikan. Dosen perlu dilatih untuk menggunakan WhatsApp grup secara optimal dalam mendukung pembelajaran.
METODE PENINGKATAN KETAHANAN RETAK RESIN POLYESTER DENGAN PENAMBAHAN PROSENTASE VINYL ESTER Nusyirwan, Nusyirwan; Hizhar, Yul; Malik , Adam
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1436

Abstract

In previous studies, hybrid crash boxes have been developed because it show better energy absorption characteristics. Circular hybrid crash box combine the advantages of low-density of composite with stable deformation of metal provide a potential energy absorption device. Tests were carried out experimentally and iumerically under frontal load. This study aims to determine the energy absorption characteristics of two different configuration of hybrid material compositions using Aluminum Alloy 6063 and T300-epoxy Carbon Fiber composites. Present two typical configurational schemes, namely Al-Ko (i.e. a metal outer tube internally filled with an inner carbon fiber reinforced plastic (CFRP) tube) and Ko-Al (i.e. an outer composite tube internally filled with an inner metal tube). Composite layups arrangement with fiber orientation direction [0,90]10. First, the simulation models were developed and validated by comparing the damage modes and crashworthiness indictors with the dedicated experimental study. Second, the interactive effects of different configuration hybrid tubes were investigated by analyzing the discrepancies in the deformation pattern and internal energy absorption of each material through the validated simulation models. The test results show that the greatest energy absorption occurs in the Al-Ko model of 7401.4 J. This hybrid crash box has an energy absorption value of 11% greater compared to the sum of the energy absorption of aluminum tubes (3746.5 J) and composite tubes (2923.4 J).
Variasi Waktu Dan Sterilisasi Untuk Anggrek Cattelya sp. Sebelum Penanaman In-Vitro Harahap, Fauziyah; Br Bangun, Edmy Febriani; Suriani, Cicik; Edi, Syahmi; Ningsih, Ayu Putri; Nusyirwan, Nusyirwan
BEST Journal (Biology Education, Sains and Technology) Vol 6, No 2 (2023): September 2023
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v6i2.8081

Abstract

 Penelitian ini bertujuan untuk Untuk mendapatkan teknik sterilisasi yang terbaik untuk eksplan batang anggrek Cattleya sp. muda. Penelitian ini dilakukan di Laboratorium Kultur Jaringan YAHDI Perum Pelabuhan Jl. Lambung No. 8 Tanah 600 Medan Marelan. Rancangan penelitian yang digunakan dalam penelitian ini adalah metode eksperimental laboratorium dalam mencobakan beberapa teknik sterilisasi. Untuk mengetahui teknik sterilisasi yang tepat, penelitian ini menggunakan eksplan lapang anggrek Cattleya Sp. dengan jenis pendekatan deskriptif kuantitatif. Data dianalisis dan ditabulasi menggunakan parameter penelitian hari terkontaminasi, persentase eksplan yang terkontaminasi, persentase eksplan browning, persentase eksplan yang membengkak, persentase eksplan yang membentuk bakal tunas dan persentase eksplan hidup. Hasil penelitian ini menunjukkan bahwa terdapat 2 teknik sterilisasi yang optimal dalam sterilisasi eksplan lapang Anggrek Cattleya Sp. yaitu teknik sterilisasi 2 dan 4. Teknik sterilisasi 2 menggunakan zat sterilan deterjen, akuades steril, Tween-20, benomil 50%, agrimicin, NaOCl 15% 10% dan alcohol 70% kemudian teknik sterilisasi 4 dengan zat sterilan Clorox 1,05%, HgCl 0,02% dan akuades steril merupakan teknik sterilisasi yang tersebut. Hal ini ditunjukkan dengan rendahnya tingkat kontaminasi eksplan dan tampaknya spot-spot hijau pada eksplan dimana eksplan akan mengalami pertumbuhan tunas. Faktor-faktor yang menyebabkan kontaminasi pada eksplan Anggrek Cattleya Sp. adalah kurangnya kehati-hatian praktikan pada saat melakukan sterilisasi eksplan lapang, kontaminasi endogenus yang tinggi dan penggunaan zat steril yang kurang tepat
Co-Authors AA Sudharmawan, AA Adam Malik Adriansyah Adriansyah Amalia Akita Anggi Septiawan Putra Aprianto, Hibatullah Anis Ardianto, Bagus Arifian, Naf'an Asmed Asmed Ayu Putri Ningsih Azizul Kholis, Azizul Basrullah Basrullah Br Bangun, Edmy Febriani CICIK SURIANI Daulae, Abdul Hakim Desmarita Leni Efiandi, Nota Ekayuliana, Arifia Elisma, Netri Fadhilla, Nadiyatul Fajri Arsyah, Ahmad Hasnul Fardinal Fardinal Fauziyah Harahap Fikri, Hayatul Haliatur Rahma, Haliatur Hamdani, Rifki Hamdani, Rifqi hasyim, hasyim Herkules Herkules, Herkules Hidayat, Rahmadani Hijar, Yul Ihsan Putra Erizal Ilham, M. Insani, Farhan Filza Jeremiah, Jogi Jumsu Trisno Jusafwar, Jusafwar Kusdiana, Yayu Maimuzar Maimuzar Malik , Adam Martinius Martinius Masril Masril Nasirwan Nasirwan Nefri, Jhon Nofriadi Nofriadi Nota Effiandi Nursamsu Nursamsu Purnomo, Yoga Amin Rama, Hilfama Rani, Mutya Reflin Riezky Idvi Alfitra Rita Noveriza Robby Novrizal Ruzita Sumiati Safrizal Safrizal Seno, Abdi Sibarani, Choms Choms Gary Ganda Tua Sihombing, Josephine Gloria Margareth Sinuraya, Kenari Br Sir Anderson Siti Saudah Sonki Prasetya Sri Wahyuni Sri Yuliani Syahmi Edi Syarifuddin Syarifuddin Tinaria, Lisa Widiyatmoko, Widiyatmoko Yul Hizhar Yuli Yetri Yuliarman Yuliarman Zubir, Zubir