p-Index From 2021 - 2026
10.597
P-Index
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : academia open

The Effect of Alkalization on the Mechanical Properties of Sansevieria Fiber Bio-Composit: Pengaruh Alkali Basa Terhadap Sifat Mekanik Bio-Komposit Serat Sansevieria Edi Widodo; Ali Akbar; Boy Isma Putra
Academia Open Vol. 8 No. 2 (2023): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7237

Abstract

Alkali treatment of natural fibers has a role in removing hemicellulose and lignin layers. This layer prevents the matrix from bonding with the natural fiber cellulose structure. The use of an inappropriate type of alkali will reduce its effectiveness and can even damage the cellulose layer. This study compared the effectiveness of alkaline NaOH, CaOH and KOH in removing lignin and hemicellulose and their ability to maintain cellulose content. The use of the immersion method in alkaline solutions is well controlled. The FTIR characterization test was used to detect functional group changes, the TGV test to detect heat resistance ability, the XRD test to detect structural changes in crystalline and amorphous properties of sansevieria natural fibers. Furthermore, the tensile test to determine the effect of alkaline treatment on changes in mechanical strength Tensile strength. From the test results it was found that the alkaline NaOH gave the best characteristics by detecting the presence of cellulose, tensile strength and the nature of the crystalline atomic structure. Highlights: Effectiveness of Alkali Types: Comparison of NaOH, CaOH, and KOH effectiveness in removing lignin and hemicellulose while preserving cellulose content. Characterization Techniques: FTIR, TGA, and XRD tests used for functional group changes, heat resistance, and structural properties evaluation. NaOH Superiority: Alkaline NaOH treatment demonstrated best results in maintaining cellulose, enhancing tensile strength, and influencing atomic structure. Keywords: Alkali treatment, Natural fibers, Lignin removal, Cellulose preservation, Tensile strength.
Impact of Workplace Environment Color on Worker Performance: Insights from a Cracker Factory: Dampak Warna Lingkungan Kerja terhadap Kinerja Pekerja: Wawasan dari Pabrik Kerupuk Boy Isma Putra; Cholifah Cholifah; Ghozali Rusyid Affandi
Academia Open Vol. 8 No. 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7436

Abstract

This study aims to explore the influence of workplace environment color on the performance of cracker factory workers. Focusing on a Small and Medium-sized Enterprise (SME) Krupuk, the research investigates the relationship between suitable workplace colors and worker performance. The psychological impact of workplace colors on mood and task execution is examined, considering factors like emotions, concentration, and alertness. Data analysis employs SPSS software for linear regression and cross-tabulation methods, revealing that an illumination level of 44 lux leads to a completion time of 14.15 seconds in the grinding section. The study highlights the desired impact of the color yellow and underscores the significance of color selection in enhancing worker performance. Highlight: Color-Mood-Performance Link: This research examines how workplace environment color influences cracker factory workers' performance, considering psychological aspects such as mood, emotions, concentration, and alertness. Data Analysis Methods: Employing SPSS software, the study employs linear regression and cross-tabulation methods to establish connections between suitable colors, worker performance, and an illumination level of 44 lux. Yellow's Desired Impact: Results highlight the desired impact of the color yellow on worker performance, emphasizing the importance of thoughtful color selection to enhance productivity. Keyword: Workplace Environment Color, Worker Performance, Psychological Impact, Illumination Level, Color Selection
Ergonomic Risk Levels in Administrative Computer Work Using REBA and ROSA: Tingkat Risiko Ergonomis dalam Pekerjaan Komputer Administratif Menggunakan REBA dan ROSA Andi Priyo Utomo; Boy Isma Putra
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.12340

Abstract

General Background: Musculoskeletal disorders are cumulative injuries in the musculoskeletal system commonly associated with prolonged non-ergonomic occupational activities, particularly in office environments. Specific Background: Administrative employees frequently perform tasks involving continuous computer usage for approximately seven hours daily, which may result in discomfort and postural strain. Knowledge Gap: Limited workplace-based assessments simultaneously examine overall body posture and office workstation conditions among administrative personnel in agricultural equipment companies. Aims: This study aims to evaluate administrative employee posture and workstation conditions at PT. XYZ through Rapid Entire Body Assessment and Rapid Office Strain Assessment supported by Nordic Body Map data. Results: Data from 15 respondents indicated predominant complaints in the waist, right elbow, and neck regions. The posture evaluation produced a score of 5, indicating a medium level requiring corrective action, while workstation evaluation also generated a score of 5, demonstrating a high level requiring immediate modification. Identified issues included non-adjustable chairs, suboptimal arm support, low monitor position, and prolonged task duration. Recommended interventions comprised periodic muscle stretching after two hours of screen activity, replacement of seating facilities with adjustable ergonomic chairs, establishment of standard operating procedures for external mouse utilization, and additional document storage facilities. Novelty: This study integrates multi-instrument ergonomic assessment to generate targeted intervention recommendations within an administrative office setting. Implications: The findings provide evidence-based ergonomic guidance for reducing musculoskeletal complaints and improving workplace comfort among office personnel. Highlights: Postural Evaluation Demonstrated Moderate Musculoskeletal Hazard Requiring Corrective Action Soon. Workplace Facility Assessment Revealed Urgent Modification Needs Related to Seating and Monitor Placement. Reported Discomfort Was Most Frequent in Waist, Elbow, and Cervical Regions. Keywords: Musculoskeletal Disorders, Nordic Body Map, Rapid Entire Body Assessment, Rapid Office Strain Assessment, Office Ergonomics
Co-Authors Ach. Yoga Ardiansah Achmad Nuzul Amri Afiyanto, Muhammad Alfin Agil, Mochamad Sofwan Agus Hayatal Falah Aldo Nur Devri Aldy Tasandy Andriansyah Alfian Fajar Gunawan Ali Akbar Ali Akbar Andi Priyo Utomo Ardana, Muhammad Rizky Aska Putra Pamungkas Athika Sidhi Cahyana Atikha Sidhi Cahyana Atok Irawan Cholifah Cholifah, Cholifah Cholifah, Cholifah Damayanti, Titik Nur Dani Budihamsyah Dedy Dedy Dewi Andriyani Dimas Eka Prasetyo Susanton Diwanti Faradiba, Nabila Dwi Maulana Edi Widodo Edi Widodo, Edi Faizal Mega Hardiansyah Fajar Alifka Hadi Fandra Prastyo Al Havish Fazrur Suman Prambahan Felly Denia Rochman Ghozali Rusyid Affandi GR, Sayid Hana Catur Wahyuni Handaru A. Putra Ifan Wahyu Pranata Dewantara Indah Apriliana Sari Wulandari Inggit Marodiyah Irawan, Atok Irma Dwi Setyowati Iswahyudi iswanto Iswanto Iswanto Jakaria, Ribangun B Jamaaluddin Kharisma, Aditya Nur Khatamy, Mohammad Reza Lazuardani, Zidan Rasyidi Luhur Arif Santoso M. Reyvaldo Putra S M.Rafly Aljabaru P.P Marzuki Ibrahim Masad Hariyadi Misbaghi, Yoni Fajar Mochamad Andre Firdiansyah Mochamad Fatkhur Rozi Mochamad Haikal Firmansyah Mochamad Nuri Affa Mochammad Imam Mashuri Much Syafiudin Muhammad Bayu Aji Saputra Muhammad Kelvin Alfindo Muhammad Rifqi Maulana Nadya Chaerunisa Winandri Nasoik, M. Kholisun Novitasari, Melisa Pamungkas, Aska Putra Pranoto, Wiji Pratama, Muchammad Ikbal Pratama, Setya Adi Prayoga Dwi Firmansyah Puspista Handayani Putra, Fransiscus Pradana Chrisanto Putri, Natasya Kurniawan R. Erik Hidayat Ramadhani, Satria Ribangun Bamban Jakaria Rita Ambarwati Rohman, Ahmad Fathur Romi, Mochammad Sari, Indah Apriliana Satria Ramadhani Sefrian Akhmad Farizi Seftiardiyah, Yenni Setiyono, Wisnu Panggah Setya Adi Pratama Setya Budi Shabirin, Muhammad Shazana Dhiya Ayuni Sofillauny, Zahara Sultan Afli Susanto, Dani Syarif Rohmatdhoni Tedjo Sukmono Thurmudhi, Moch Ibad Titik Nur Damayanti Wachidatul Bahiyyah, Siti Wafika Urfa Maulidah Wiwik Sulistiyowati Wiwik Sumarmi Wulandari, Indah Apriliana Sari Yulianto, Rizky