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All Journal Jurnal Spektran Jurnal Energi Dan Manufaktur Rekayasa Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Jurnal Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Indonesian Journal of Chemistry Machine : Jurnal Teknik Mesin Journal of Applied Agricultural Science and Technology Jurnal Pengabdian Magister Pendidikan IPA Jurnal Mesin Nusantara Journal of Fibers and Polymer Composites Jurnal Karya Pengabdian Teknik Mesin Protech Biosystems Journal Indonesian Journal of Forestry Research
Nasmi Herlina Sari
Jurusan Teknik Mesin, Fakultas Teknik Universitas Mataram
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Penyuluhan Pembuatan Briket dari Sampah Biomassa untuk Bahan Bakar di Lingkungan Batu Ringgit, Mataram Salman Salman Salman; Syharul Syahrul .; Nasmi Herlina Sari; Emmy Dyah Sulistyowati; Nur Kaliwantoro .
JURNAL KARYA PENGABDIAN Vol. 5 No. 1 (2023): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v5i1.138

Abstract

Salah satu cara pemanfaatan sampah biomassa adalah dengan mengolahnya menjadi briket sampah biomassa.Karena itulah dalam kegiatan pengabdian masyarakat ini tim pelaksana pengabdian melakukan penyuluhan pembuatan briket sampah biomassa di depan kelompok tani di Linkungan Batu Ringgit Selatan, Kelurahan Tanjung Karang, Kecamatan Sekabela, Kotamadya Mataram. Saat ini kelompok tani tersebut belum memanfaatkan sampah biomassa mereka yang tersedia secara melimpah di sekitar mereka.Hasil pelaksanaan dari kegiatan pengabdian ini meliputi pengadaan alat pencacah sampah organik, penyuluhan pembuatan briket sampah organik, dan produksi briket. Dari kegiatan ini tim pelaksana berhasil memproduksi briket. Hasil pembuatan briket sampah biomassa ini bisa ditawarkan konsumen baik skala rumah tangga, industri maupun sesuai tujuan awal yaitu PLTU sebagai target pemasaran dalam skala besar.
Aplikasi Alat Tanam Padi Sistem Jarwo di Desa Batunyala Kecamatan Praya Tengah Lombok Tengah Sujita Sujita; Nasmi Herlina Sari; Sinarep Sinarep; Achmad Zainuri; Rudy Sutanto
JURNAL KARYA PENGABDIAN Vol. 5 No. 1 (2023): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v5i1.148

Abstract

Batunyala Village, Praya Tengah District, Central Lombok Regency is known as a rice barn area in Central Lombok Regency. In general, their livelihood is rice farming. The characteristics of rice from Batunyala Village are fluffier and fragrant with fragrant pandan wangi. So many local and foreign rice traders are looking for it to be sold again. The obstacle experienced by farmers is when planting rice. Planting is an important activity in rice cultivation which requires about 25% of labor. Most of the agricultural workforce is now entering the non-productive age, while the interest of the younger generation to get involved in agriculture is getting lower, especially with traditional farming systems. This situation has raised deep concern for the government in achieving reliable food security. One way to overcome these obstacles is by counseling, as well as applying the rice transplanter (Rice Transplanter) of the Jajar Legowo (Jarwo) Planting Method. The application of Rice Transplanter technology with the Jarwo method can increase time and cost efficiency. The production of Pandan Wangi variety rice produces an average of 4.0 tons/ha and manually produces an average of 3.64 tons/ha. Can increase production by 9.89% compared to the manual system.
The Chemical and Water Sorption Properties of Chemically Modified Sesbania grandiflora and Leucaena leucocephala Fibers and Their Opportunities as Biocomposite Fillers Sari, Nasmi Herlina; Suteja, Suteja; Sutaryono, Yusuf Akhyar
Journal of Fibers and Polymer Composites Vol. 3 No. 1 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i1.146

Abstract

Researchers are interested in investigating the optimum features of Sesbania grandiflora fibers (SGs) and Leucaena leucocephala fibers (LLs) for application in a wide range of applications. The purpose of this study was to explore the effects of NaOH and bleaching on the chemical characteristics, density, moisture content, and functional groups of sesbania g. and leucaena l. fibers. SGs and LLs fibers were chemically changed in various ways, including alkalization with 5% NaOH for 2 hours and bleaching with sodium chlorite (NaClO2) and acetic acid (CH3COOH). The results of the study showed that the cellulose, lignin, and hemicellulose content of the modified fiber was generally lower than that of the raw fiber. This was explained by the hydrolytic agents NaOH and bleaching causing damage to the cellulose chains and bond modifications. It was discovered that NaOH treatment was more effective at removing lignin and hemicellulose components in addition to cellulose, based on the functional groups seen in FTIR spectra. After the alkali and bleaching processes, the water content of SGs/NaOH, LLs/NaOH, SGs/bleaching, and LLs/bleaching fibers was reduced to 5.4 ± 0.89 %, 6.23 ± 0.87 %, 7.12 ± 1.02 %, dan 0.22 ± 0.21 %, respectively. This is also because the fiber has a relatively high fiber density of between 0.2 and 0.3 g/cm3, which is caused by the loss of non-fiber substances that are linked to the fiber. The results show that PFs treated with bleaching, NaOH, and raw fibers have the potential to be used as fillers in biocomposites and as substitute materials for glass fiber in the textile industry.
A Review on Silver Nanoparticles Based Biomaterials for Bone Tissue Engineering and Medical Applications Sari, Nasmi Herlina; Rivlan, Muhammad Zaidan Fadhlurrohman; Suteja, Suteja; Kadriyan, Hamsu; Thiagamani, Sentil Muthu Kumar
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92830

Abstract

Silver nanoparticles (AgNPs) are being studied extensively as nanostructures for novel and enhanced biomedical applications. Nanoparticles in bone grafts have been shown to speed up fracture healing by providing a finer structure for bone tissue engineering. They are known to have excellent antimicrobial properties due to their high surface-to-volume ratio and small particle size, without affecting the material's mechanical properties. AgNPs' distinct property makes them the preferred filler in a wide range of biomaterials, where they play an important role in enhancing properties. AgNP-containing biomaterials can be easily tailored to meet specific requirements in the development of bone tissue. Adjusting size, shape, composition, and surface charge can enhance their effectiveness in interacting with bone cells, promoting cell attachment, and delivering growth factors. Using AgNP-based biomaterials can help prevent or reduce the formation of biofilms. The utilization of these materials in bone tissue engineering has demonstrated potential in treating musculoskeletal conditions and bone traumas. They are versatile for various applications such as bone implants, scaffolds, wound dressings, and antibiotic delivery systems. This review will cover several special topics, including silver-based biomaterials, toxic properties, morphology and mechanical properties of silver-based biomaterials, and applications of silver-based biomaterials in medical applications.
Pemanfaatan Sisa Baja Ringan Sebagai Pembuatan Alat Pembakar Ikan: Pembuatan Alat Pembakar Ikan Herlinasari, Nasmi; Suteja, Suteja; Hidayatulah, Syarif; Sari, Nasmi Herlina; Sutaryono, Yusuf Akhyar
JURNAL KARYA PENGABDIAN Vol. 6 No. 2 (2024): ,Oktober
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v6i2.187

Abstract

Used light steel is used extensively in construction projects and is only provided to collectors at a reduced cost. It is derived from the leftover light steel building components. The goal of this project is to make a grill out of the leftover light steel parts that will withstand heat better and be more valuable than it was previously. The grill's shape facilitates easy heat absorption by the cooked material. This fish grill is made by first gathering leftover light steel, then bending and attaching the steel to form the grill using bolts. The activity's outcomes demonstrate that the grill made from leftover light steel is capable of producing consistent heat, allowing the fish to be cooked to perfection without being overly dry or scorched on the outside. Light steel additionally has an excellent level of heat resistance at high temperatures, extending the tool's service life and, eventually, raising UMKM's earnings.
A Review: Fracture Structure of Natural Fiber Surface after Treatment with Various Alkali Chemicals Herlina Sari, Nasmi; Sari, Suteja; Sutaryono, Yusuf Akhyar; Khan, Moonish Ali
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.203

Abstract

Natural fibers, including both animal and plant fibers, have many applications in a variety of sectors, therefore knowing the effects of chemical treatments on their characteristics is critical. This study evaluates the impact of different chemical treatments, including silanes, acetylation, benzoylation, peroxides, and several coupling agents, including maleation. In addition, this paper discusses treatment using acrylation and acrylonitrile, stearic acid, sodium chlorite, oleoyl chloride, isocyanate, and permanganate. These treatments alter the surface structure of the fibers by changing their chemical composition and shape. Silane and coupling maleation chemicals typically increase fiber attachment to the polymer matrix, whereas acetylation and benzoylation frequently improve resistance to moisture and microbial attacks. Peroxide and permanganate can produce oxidation, which reduces fiber strength, but grafting acrylation, acrylonitrile, and isocyanate improves resistance and temperature stability. Stearic acid and oleoyl chloride increase hydrophobicity, whereas sodium chlorite treatment alters the lignocellulose structure, increasing density and strength. This study also examines the impacts of biological treatment with fungi, that may change fiber structure via biodegradation pathways. This study's findings shed light on how various chemical treatments might alter the durability and strength of natural fibers, and also their use in industry and material technology.
Exploring the Impact of Sound Dampening Materials on Maritime Workers' Knowledge and Attitudes Towards Noise-Induced Hearing Loss: A Literature Review Muhammad Zaidan Fadhlurrahman Rivlan; Yudhanto, Didit; Retno Setyowati, Ety; Herlina Sari, Nasmi
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.206

Abstract

Effective mitigation strategies are necessary because high noise levels in maritime work situations frequently represent serious threats to hearing health. Acoustic panels and sound absorbers are examples of sound-dampening materials that are used to lower noise levels; nevertheless, it is unclear how these materials affect employees' awareness and attitudes. The purpose of this study is to investigate how the usage of sound-absorbing materials affects the attitudes and understanding of marine personnel about noise-induced hearing loss (NIHL). The study also covers ship personnel' attitudes toward NIHLs, their understanding of NIHLs, and their hazards. The strategies for increasing ship employees' understanding of and attitudes toward NIHL, the impact of sound-dampening materials on their knowledge and attitudes toward NIHL, and the effectiveness of NIHL awareness and training programs are also covered. While the majority of marine workers are knowledgeable that noise can lead to hearing loss, the review's findings show that their understanding of the causes and long-term consequences of NIHL is insufficient. Diverse perspectives exist regarding prevention, and several employees find it awkward to wear hearing protection. Sound-absorbing materials facilitate better communication and teamwork among employees, which can raise satisfaction at work and safety awareness while lessening the disruption caused by excessive noise. Moreover, employing hearing protection devices (HPPs) can raise staff members' awareness of NIHL and motivate them to utilize HPPs more proactively. These results provide recommendations for more potent preventive measures as well as significant insights into occupational safety and health regulations in the maritime sector.
PENGARUH PREHEAT DAN TEMPERING TERHADAP KEKERASAN DAN STRUKTUR MIKRO HASIL PENGELASAN BAJA JIS SS 400 Askar, Saiful; Sinarep, S.; Sari, Nasmi Herlina
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (621.671 KB)

Abstract

JIS steel SS 400 is one of the most common types of steel used for hot rolling steel structures general. This steel is excellented to the weldability and machinability properties. This study aimed to determine the effect of heat treatment with preheating without tempering (PTT), with preheating and tempering (PT), without preheating and without tempering (TPTT), and  without preheating tempering (TPT). The test results are then compared with the raw material specimens. Method of forming specimens using welding SMAW (Shielded Metal Arc Welding) DC reverse polarity using E7018 type electrode diameter of 4 mm. Type of seam used is V open seam with slit width and height of 2 mm and the width of the root angle 70o. This studied used a low alloy steel (JIS steel SS 400) which contain high levels of 0.20% C, maximum 0.005% S, maximum 0.005% P with repetitions each variation three times. Tests conducted it has testing the tensile strength, brinell hardness testing, and microstructure photo shoot. Value of the brinell hardness of welded joints highest in the tempering specimens without preheating, amounting with  163,911 HB hardness value. The structure of cementite and pearlite formed. While the lowest hardness values of specimens owned by raw material is 120,498 HB hardness values that form the microstructure of pearlite and ferrite. 
Pengaruh Panjang Serat Dan Fraksi Volume Serat Pelepah Kelapa Terhadap Ketangguhan Impact Komposit Polyester Sari, Nasmi Herlina; Zainuri, Achmad; Wahyu, Fitratul
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (246.106 KB)

Abstract

Composite has alone top to be compared with alternative's tech material any other as strong, demulcent, bate corrosion, economic etcetera.  The aim of this research is to investigate the influence of fiber length and fiber volume composition coconut frond to tensile strength step-up and toughness impact composite is coconut frond fiber with matrix resin   polyester   This research utilizes fiber length variation 2 cm, 4 cm, 6 cm and fiber volume variations 5%, 10%, 15%. composite lasing utilizes resin polyester  composite makings done at random with fiber compare and resin 100%. Fiber conduct is done with soak fiber up to 1 hour with NaOH solution as much 4%. composite makings process by method hand lay up  with emphasis manually utilize glass as printed as and depressing.   That result showed for fiber length 2 cm, 4 cm, and 6 cm gotten by supreme tensile strengths on long fiber 6 cm which is 27.5503216 N/mm2 and tensile strength is contemned available on fiber length 2 cm which is 16.80040936 N/mm2  and on fiber volume 5%,10%, and 15% supreme tensile strengths on volume fiber 15%, which is 28.49020468 N/mm2 and tensile strength is contemned available on volume 5%, which is 16.80040936 N/mm2. Toughness impact  supreme for fiber length 2 cm, 4 cm, and 6 cm happens on fiber length 2 cm with volume variation 10% which is 4087.5 Kj/m2 and on fiber volume 5%,10%, and 15% gotten by toughness impact  supreme available on volume 10% with longing fiber 6 cm which is, 4087. 5 Kj/m2
PEMANFAATAN SERBUK TEMPURUNG KELAPA PADA KOMPOSIT Al2O3-EPOXY Syafruddin Zohri, Ahmad; Sari, Nasmi Herlina; Sujita, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.808 KB)

Abstract

The purpose of this research is utilization of coconut shell powder on Al2O3-Epoxy composite so it can be used as an alternative material of brake linings that are enviromentlly friendly. In this research, coconut shell powder is used as a filler on Al2O3-Epoxy composites that are made using hand lay up method. Comparison volume fraction of coconut shell powder and Al2O3 was varied amount 0:40, 10:30, 20:20, 30:10 and 40:0 (%). Adhesive was used is epoxy resin namely amount 60%. Test conducted is wear test. The results showed that utilization of coconut shell powder on Al2O3-Epoxy can be decrease the wear so it can be used as an alternative material of brake linings that are environmentally friendly
Co-Authors Achmad - Zainuri Achmad Zainuri Achmad Zainuri Agil Trieanto Agus Dwi Catur Agus Dwi Catur Ahmad Safii Ahmad Syafruddin Zohri, Ahmad Ahmad Syafruddin Zohri, Ahmad Syafruddin Ahmad Taufan Ainun Asmawati Anindito Purnowidodo Anindya Aisyatur Amini Apriandi, M. Irawan Arif Mulyanto Arif Surya Darmawan D.P Arif Surya Darmawan, Arif Surya Arya Muliana Baiq Elmaliana Baiq Tasya Carrisa Denda Ayu Febriani Riaz Putri Dewa Gede Pertama Putra Dewa Gede Pertama Putra, Dewa Gede Pertama Dhea Amalia Didit Yudhanto Difa Salsabila Fakhrunnisa Dimas Juniarto Dina Muliyani Djarot B. Darmadi, Djarot B. Dwi Setyawan Edi Syafri Emmy dyah S Emmy Dyah Sulistyawati, Emmy Dyah Emmy Dyah Sulistyowati Emmy Dyah Sulistyowati Emmy Dyah Sulistyowati Emmy Dyah Sulistyowati, Emmy Dyah Evelyn Carolina Sentosa Fitratul Wahyu, Fitratul Fitri Febrianti Fitriah H. Harsi, H. Herlinasari, Nasmi Hidayatulah, Syarif Huda, Ahmad Akromul Huriyani I Gede Widiartha I Gede Widiartha, I Gede I Gusti Bagus Indra Permana I Kade Wiratama I Made Wirawan I Putu Krishna Artha Sastra I Putu Krishna Artha Sastra, I Putu Krishna Artha I.D.K. Okariawan IDK Okariawan, IDK IGNK Yudhyadi IGNK. Yudhyadi Insan Andrian, Insan Jauhar Fajrin Jauhar Fajrin Jauhari Muslim, Jauhari Kadriyan, Hamsu Karyanik, Karyanik Khan, Moonish Ali Kiki Dewanti Lalu Abdurrahman Wahid Lalu Tumbuh Prasetya Ludia Margrith Suseray M. Wirya Dirjan M. Wirya Dirjan, M. Wirya Maharsa Pradityatama Maryam Soleha Bahar Muhammad Ali Azmi Muhammad Edi Nasution Muhammad Rama Setiyadi Muhammad Subbanul Mujahiddin Muhammad Zaidan Fadhlurrahman Rivlan N. Nurchayati Namira Risqi Putri Muquita Nur Kaliwantoro Nurhasanah Nurhasanah Nurrochman Hartadi Dasrien Pandri Pandiatmi Pandri Pandiatmi Panji Saputra Anggara Paryanto Dwi Setyawan Pnadri Pandiatmi, Pnadri Pradityatama, Maharsa R.C. Lelio Retno Setyowati, Ety Risa Wardani Rivlan, Muhammad Zaidan Fadhlurrohman Rozan Hermansyah Rudy Sutanto S Sinarep, S S Sujita, S S. Sinarep, S. Saiful Askar, Saiful Salman Salman Salman Sanjay Mavinkere Rangappa Sari, Suteja Sinarep - Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Siti Zulaeha Sugiman Sugiman Sujita Sujita Sujita Sujita Sujita, Sujita Sukarne Sukarne Sutaryono, Yusuf Akhyar Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja, Suteja Syafri, Edi Syarif Hidayatullah Syharul Syahrul . T Topan, T T. Topan, T. Thiagamani, Senthil Muthu Kumar Thiagamani, Sentil Muthu Kumar Ulfa Handayani Wibi Wahid Muharram Yayan Gunanto Yayat Indra Saputra Yogi Prayudi Yudi Ahmad Efendi Yusuf Ahyar Sutaryono Yusuf Akhyar Sutaryono Zahratul Laili