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All Journal Science and Technology Indonesia Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Biologi Tropis Jurnal Media Informatika Jurnal Sylva Lestari TeknoKreatif: Jurnal Pengabdian kepada Masyarakat J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Maulana, Sena
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Pengaruh Loyalitas Karyawan (Organizational Citizenship Behavior) dan Penerapan Teori Dua Faktor (Two Factor Theories) Terhadap Kinerja Perusahaan Fauziana, Eva; Maulana, Sena; Junianto, Oni; Anggiani, Sarfilianty
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : CV. Ridwan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.079 KB) | DOI: 10.36418/syntax-literate.v6i2.5441

Abstract

Organizational Citizenship Behavior (OCB) atau loyalitas dan kelekatan karyawan terhadap organisasi, dewasa ini menjadi salah satu program divisi SDM di banyak perusahaan untuk terus dikembangkan dan diimplementasikan dalam kegiatan operasional perusahaan. Penelitian ini menganalisis sejauh mana loyalitas dan kelekatan karyawan terhadap organisasi berpengaruh terhadap kinerja organisasi atau perusahaan. Penelitian ini mengambil data random responden dari berbagai industri, posisi dalam organisasi, serta spesifikasi peran dan tanggung jawab tiap responden dalam organisasi. Loyalitas karyawan yang dimaksud adalah tentang seberapa kuat karyawan bangga dan percaya terhadap perusahaannya, serta seberapa paham mereka memahami visi misi serta rencana strategis yang diemban perusahaan. Ada pun Teori Dua Faktor yang terangkum dalam penelitian ini adalah mengenai prosedur dan tata kelola yang ditetapkan perusahaan, hubungan antara atasan-bawahan dan rekan kerja, lingkungan fisik tempat kerja, program kesejahteraan karyawan yang ditawarkan perusahaan, serta seberapa jauh pekerjaan yang karyawan emban mampu memotivasi mereka. Hasil dari penelitian ini mengungkapkan bahwa Teori Dua Faktor jauh lebih berpengaruh dalam meningkatkan kinerja perusahaan.
The Empowering Forest Communities through the Application of the Sonokeling Tree Barcoding System as an Effort for Forestry Social Disaster Management in Wan Abdul Rahman Forest Park, Lampung Province Octaviani, Eti Artiningsih; Hasibuan, Mhd Muhajir; maulana, sena; sari, nurika arum; Murda, Rio Ardiansyah
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 3 No 2 (2023): TEKNOKREATIF : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v3i2.1132

Abstract

Abstract Community Service entitled "Empowering Forest Communities through the Application of the Sonokeling Tree Barcoding System as an Effort for Forestry Social Disaster Management in Wan Abdul Rahman Forest Park, Lampung Province" is motivated by the condition of the Tahura Wan Abdul Rahman area which is vulnerable to illegal logging, especially the Sonokeling (Dalbergia latifolia). Illegal logging is one of the social disasters of forestry and threatens the sustainability of forests and the various resources in them. This is also faced with the limited personnel of related institutions in dealing with social disasters. Therefore, the PkM team consisting of ITERA lecturers from the Forestry Engineering Study Program assisted in gathering information regarding the potential of sonokeling stands in Tahura WAR and developing a barcoding system (QR Code) that would facilitate monitoring and securing rosewood stands from the threat of illegal logging. The barcoding system application is also expected to be able to support the Tahura WAR foster tree program which will be initiated later to increase community empowerment in maintaining forest sustainability. Keywords: foster tree, WAR Forest Park, QR Code
Effect of Calcination Temperature on the Adsorption Performance of Tanggamus Natural Zeolite for Ammonium Removal from Shrimp Pond Wastewater Al Qadri, Latif; Abelta, Gita Aldira; Febrina, Melany; Rajak, Abdul; Maulana, Sena; Asagabaldan, Meezan Ardhanu; Taher, Tarmizi
Science and Technology Indonesia Vol. 9 No. 1 (2024): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.1.198-206

Abstract

This research explores the potential of locally sourced natural zeolite from the Tanggamus District, Indonesia, for the removal of ammonium from shrimp pond wastewater. The study utilizes a comprehensive approach involving desilication modification, batch adsorption experiments, and field-scale application. The zeolite, predominantly composed of clinoptilolite, undergoes calcination at varying temperatures, with 200°C proving to be optimal for enhancing ammonium adsorption capacity. The study also highlights the efficient use of zeolite at a lower dosage of 5 g/L, yielding high removal efficiency. The real-world effectiveness of this method was confirmed by field experiments, where the application of calcined zeolite resulted in lower ammonium concentrations in shrimp ponds. The results demonstrate that the application method, specifically direct spreading in the ponds, affects adsorption performance. These findings underscore the potential of using Tanggamus Natural Zeolite as a cost-effective and eco-friendly solution for ammonium control in shrimp pond wastewater. This work paves the way for future research focusing on the long-term application effects and zeolite regeneration methods to further improve the economic and environmental efficiency of this approach.
Enhanced Ammonium Adsorption from Aqueous Solutions Using Ethylenediaminetetraacetic Acid (EDTA) Modified Lampung (Indonesia) Natural Zeolite: Isotherm, Kinetic, and Thermodynamic Studies Abelta, Gita Aldira; Al Qadri, Latif; Febrina, Melany; Rajak, Abdul; Maulana, Sena; Asagabaldan, Meezan Ardhanu; Taher, Tarmizi
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.224-234

Abstract

The environmental concern related to excessive ammonium in water bodies necessitates efficient and cost-effective removal techniques. This study investigated the modification of natural zeolite collected from the Tanggamus district of Lampung Province, Indonesia, with ethylenediaminetetraacetic acid (EDTA) to enhance its performance for ammonium adsorption from aqueous solution. The modified and natural zeolites were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), N2 adsorption-desorption isotherm, and scanning electron microscopy (SEM). Results indicated that the modification did not cause significant structural changes but increased the mesoporosity of the zeolites, which was beneficial for ammonium adsorption. The adsorption studies revealed that the EDTA modified zeolites consistently outperformed the natural zeolite and that the adsorption process was exothermic in nature. The Langmuir and Freundlich isotherm models fit the adsorption data well, indicating that the adsorption process occurs on both homogenous and heterogeneous surfaces. Thermodynamic studies confirmed that the adsorption process was exothermic and that the EDTA modification increased the spontaneity of the ammonium adsorption process. Overall, this study highlights the potential of EDTA-modified zeolites as an effective material for ammonium removal from aqueous solutions.
Hybrid Biopellets Characterization of Gamal Wood (Gliricidia sepium) and Robusta Coffee Husk at Various Compositions Putri, Mangifera Indica Dhaifullah Wangun; Murda, Rio Ardiansyah; Maulana, Sena; Octaviani, Eti Artiningsih; Sari, Nurika Arum; Hasibuan, Mhd Muhajir; Aulia, Fauzan; Hidayat, Wahyu
Jurnal Sylva Lestari Vol. 12 No. 3 (2024): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i3.913

Abstract

Biopellets from gamal wood (Gliricidia sepium) as a biomass energy resource could be an alternative to replace fossil fuels due to having met standards based on moisture content, ash content, fixed carbon, calorific value, and density. Unfortunately, they still had high levels of volatile matter. Robusta coffee husk was a material with high nitrogen content, which is suspected of being able to bind aromatic substances in volatile organic compounds. This study aims to evaluate the quality of biopellets and determine the optimum composition of the biopellets from gamal wood and coffee husk. The blended composition of gamal wood and coffee husk biopellets studied were 100:0, 75:25, 50:50, 25:75, and 0:100. The biopellets were manufactured using the material size of 40-60 mesh with a pressure of 173.51 MPa. The best biopellet was produced in the composition of 75% gamal wood and 25% coffee husk, with a density of 0.85 g/cm3, moisture content of 8.03%, ash content of 3.92%, volatile substances of 78.01%, fixed carbon of 18.07%, and calorific value of 4,176 cal/g. The biopellet quality met the standards of SNI 8021:2014 and EN 14061-2, except for ash content. Adding coffee husk reduced gamal wood biopellet’s volatile matter, increasing the fixed carbon and density of gamal wood biopellets. Keywords: alkali immersion, bamboo, bio-composite, oriented strand board, pre-treatment
Karakteristik Biobriket Arang Campuran Limbah Batang Singkong dan Kayu Kaliandra pada Berbagai Variasi Komposisi Murda, Rio Ardiansyah; Wahyuningrum, Maeda; Zahra, Rima Adzra; Maulana, Sena
Jurnal Media Informatika Vol. 6 No. 3 (2025): Jurnal Media Informatika
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jumin.v6i3.6583

Abstract

Penelitian ini bertujuan untuk menganalisis karakteristik biobriket arang dari campuran limbah batang singkong dan kayu kaliandra pada variasi komposisi 0:100, 25:75, 50:50, 75:25, dan 100:0 (% berat). Pembuatan biobriket dilakukan melalui proses pengeringan, pengarangan, pengayakan ukuran 40–60 mesh, pencampuran dengan 5% perekat tepung kanji, pencetakan menggunakan kempa hidrolik, dan pengeringan. Karakterisasi dilakukan terhadap kerapatan, kadar air, kadar abu, kadar zat terbang, karbon terikat, nilai kalor, dan laju pembakaran. Hasil pengujian menunjukkan bahwa pencampuran limbah batang singkong dan kayu kaliandra mampu memperbaiki mutu biobriket. Komposisi S50K50 memberikan hasil terbaik dengan nilai kerapatan 0,40 g/cm³, kadar air 3,65%, kadar abu 7,71%, zat terbang 26,27%, karbon terikat 66,01%, nilai kalor 7164 kal/g, dan laju pembakaran 0,09 g/menit. Seluruh komposisi memenuhi standar SNI 01-6235-2000 dan EN 1860-2-2005, namun hanya beberapa komposisi yang sesuai dengan standar GOST 7657-84. Nilai zat terbang masih relatif tinggi sehingga belum memenuhi batas standar SNI, tetapi secara keseluruhan campuran ini menunjukkan potensi tinggi sebagai bahan bakar biomassa alternatif berbasis limbah pertanian.
Analisis Pengaruh Temperatur Terhadap Kekuatan Tarik dan Tekuk pada Proses Hot Pressing Komposit Hybrid Serat Bambu dan Serat Daun Nanas Bermatriks HDPE Paundra, Fajar; Pratama, Angga Jihan; Pujiyulianto, Eko; Muhyi, Abdul; Yudistira, Hadi Teguh; Maulana, Sena; Elmiawan, Puguh
J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Vol. 8 No. 2 (2024): J-Proteksion
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jp.v8i2.1123

Abstract

Temperatur merupakan salah satu parameter yang sangat berpengaruh terhadap komposit HDPE. Penelitian ini bertujuan mengamati dan menganalisis pengaruh temperatur terhadap kekuatan tarik dan tekuk pada proses hot pressing komposit hybrid serat bambu dan serat daun nanas bermatriks HDPE. Material yang digunakan yaitu plastik HDPE, serat bambu dan serat daun nanas. Proses pembuatan dengan metode hot pressing bertekanan 25 bar dengan variasi temperatur 170°C, 180°C, 190°C, 200°C, dan 210°C selama holding time 25 menit. Pengujian yang dilakukan pada penelitian ini adalah pengujian tarik dan pengujian tekuk yang merujuk pada standar ASTM D 3039 dan ASTM D 790. Nilai kekuatan tarik maksimal komposit HDPE tertinggi terdapat pada temperatur 170°C dengan nilai sebesar 514,489 MPa dan nilai kekuatan tarik maksimal terendah terdapat pada temperatur 210°C dengan nilai sebesar 383,349 MPa. Nilai kekuatan tekuk maksimal tertinggi juga terdapat pada temperatur 170°C dengan nilai sebesar 97,322 MPa dan nilai kekuatan tekuk terendah terdapat pada temperatur 210°C dengan nilai sebesar 74,081 MPa.
Species Compotition of Fruit Bats (Pteropodidae) in Institut Teknologi Sumatera, Lampung Hasibuan, Mhd Muhajir; Fitria Ningsih, Desvita; Vincent, Joy; Maulana, Sena; Sari, Nurika Arum; Alfajrin, Achmad Chalid; Dwiputra, Mohammad Ashari
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6578

Abstract

Fruit bats (family Pteropodidae) pollinate around 300 species of tropical plants of high economic value over a wide range of areas. This large role does not match the status of their population, which continues to decline due to habitat loss, particularly in urban areas. The Sumatra Institute of Technology (ITERA) campus, which is currently under development, may result in habitat changes that may affect bats. These concerns have led to the need for research into bat diversity on the ITERA campus. The result could be utilised to monitor and develop the environmental management of the campus. The research was conducted from May to September 2023 in five different habitat types. Data were collected using 3 mistnets and 3 night repetition each habitat. The data were analysed using indices of diversity, evenness and species richness. The study recorded 143 individuals of 7 species. The highest number of species and diversity was observed in the sengon and rubber habitat (6 species). The lowest number of species and diversity was found in the botanical garden (2 species).
Co-Authors Abelta, Gita Aldira Al Qadri, Latif Alfajrin, Achmad Chalid Asagabaldan, Meezan Ardhanu Dwiputra, Mohammad Ashari Elmiawan, Puguh Eti Artiningsih Octaviani Fauzan Aulia Fauziana, Eva Febrina, Melany Fitria Ningsih, Desvita Hadi Teguh Yudistira, Hadi Teguh Junianto, Oni Mhd Muhajir Hasibuan Muhyi, Abdul Paundra, Fajar Pratama, Angga Jihan Pujiyulianto, Eko Putri, Mangifera Indica Dhaifullah Wangun Rajak, Abdul Sarfilianty Anggiani, Sarfilianty sari, nurika arum Tarmizi Taher Vincent, Joy Wahyu Hidayat Wahyuningrum, Maeda Zahra, Rima Adzra