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All Journal InComTech: Jurnal Telekomunikasi dan Komputer Chemistry Indonesian Journal of Chemical Research PERENNIAL Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Journal of Sylva Indonesiana Science Education and Application Journal International Journal of Recent Technology and Applied Science (IJORTAS) Indonesian Journal of Laboratory Jurnal Sylva Lestari Jurnal Ilmu Kehutanan Jurna Beta Kimia Journal Economics Technology and Entrepreneur
Wahyuningtyas, Irma
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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The Influence of Chip Size Variation in the Pulping Process from Jabon Wood Dirna, Fitria Cita; Wahyuningtyas, Irma
Indonesian Journal of Chemical Research Vol 13 No 2 (2025): Edition for September 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.13-fit

Abstract

Wood is the primary raw material in the pulp and paper industry. Due to its favorable fiber characteristics, Jabon wood (Anthocephalus cadamba Miq.) is a promising fast-growing pulp and paper production species. This study investigates the effect of nine different chip size variations, including their length and thickness (1×3, 3×3, 5×3, 1×5, 3×5, 5×5, 1×7, 3×7, and 5×7), on pulp yield, fiber properties, and chemical performance using the kraft pulping method. Parameters measured include pulp yield, fiber length, fiber diameter, lumen diameter, cell wall thickness, and derived indices such as Runkle ratio, felting power, Muhlsteph ratio, rigidity coefficient, flexibility ratio, and kappa number. Results show that chip size does not significantly affect yield but influences fiber quality and kappa number. Shorter and thinner chips improved chemical penetration, resulting in lower kappa numbers and higher-quality pulp. Fiber classification based on IAWA criteria placed jabon wood in class II, indicating medium to suitable suitability for pulp. The study provides novel insight into optimizing chip geometry for kraft pulping of jabon wood, which has rarely been explored in previous literature. These findings are relevant for enhancing raw material efficiency and pulp quality in industrial applications.
PENGUJIAN PERFORMA ALAT SPECTRONIC 20D+ DENGAN LARUTAN KALIUM PERMANGANAT (KMNO4) Ismail, Rohmat; Wahyuningtyas, Irma; Erlangga, Manasye; Prihatini, Esti
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.5992

Abstract

The Spectronic 20D+ is a simple spectophotometer that is still widely used in laboratories for both research and practicum activities. In order to ensure the continued accuracy of measurements, it is imperative that this instrument undergoes rigorous testing to ascertain its performance. The selection of potassium permanganate (KMnO4) as the testing solution is particularly salient in this context, given its notable advantages over conventional alternatives such as cobalt (II) chloride and potassium dichromate. These alternatives, while widely employed, are associated with a higher degree of risk and cost. The objective of this study is to ascertain the performance of the Spectronic 20D+ device when utilized with a KMnO4 solution. In this study, two units of Spectronic 20D+ were utilized, with one unit receiving a filter cleaning treatment only (PF), and the other undergoing a filter cleaning and replacement of the wolfram lamp (PFL). The maximum wavelength test yielded a value of 515 nanometers on both devices prior to the initiation of the repair process. The results of measuring the standard solution show that there is an increase in the amount of light absorbed, the slope of the line, and the coefficient of determination (R²). These were statistically tested with significantly different results on both tools after the repair process. This finding indicates that the measurement outcomes of the KMnO4 solution can serve as a reliable metric for evaluating the performance of the device before and after the repair process. Furthermore, following the restoration of the tool, the optimal linear range for KMnO4 concentration measurement was ascertained, ranging from 0 to 25 ppm. This determination was informed by the highest R2 value and the outcomes of cuvette correction testing, which yielded a consistent molar permissivity significance value as determined by the Duncan test for the five cuvettes utilized in this study.
STRATEGI CUSTOMER RELATIONSHIP MANAGEMENT (CRM) SEBAGAI KUNCI PENINGKATAN KEPUASAN KONSUMEN PADA INDUSTRI HASIL HUTAN KALIMANTAN TIMUR Nona, Risna; Wahyuningtyas, Irma; Rizki, Selvi Diliyanti; Badia, Bahdin Ahad
Journal Economics Technology And Entrepreneur Vol 4 No 03 (2025): ECOTECHNOPRENEUR : JOURNAL ECONOMICS, TECHNOLOGY AND ENTREPRENEUR
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/ecotechnopreneur.v4i03.1810

Abstract

This study aims to prove and analyze the influence of Customer Relationship Management (CRM) as a key strategy on increasing Customer Satisfaction for forest products industry in East Kalimantan. This research employed a quantitative approach with a survey method, where primary data were collected by distributing questionnaires to 278 consumers selected using a simple random sampling technique. Data analysis was performed using the Structural Equation Modeling - Partial Least Square (SEM-PLS) approach with SmartPLS software. The results show that Customer Relationship Management (CRM) has a positive and statistically significant effect on Customer Satisfaction, as evidenced by a path coefficient of 0.249 and a T-statistic of 3.973 (P-value < 0.05). The R-Square value of 0.062 indicates that CRM is able to explain 6.2% of the variance in Customer Satisfaction. This finding confirms that the implementation of CRM strategies, particularly through ease of service access and the maintenance of personal relationships, is a crucial factor that can enhance consumer satisfaction in the forest products industry sector.
Co-Authors Afandi, Irfan Ricky Erlangga, Manasye Fathurrohman, Sewin Firman Noor Hasan Fitria Cita Dirna Hanifah, Nisrina Putri I Wayan Darmawan Ismail, Rohmat Istie Rahayu Khairunissa, Dhiya Khoerudin, Riki Kutana, Agung Nugrawan Laksono, Gilang Dwi Nona, Risna Prihatini, Esti Riadhi, Mohamad Rizki Rizki, Selvi Diliyanti Saputri, Egydia Trisna PRIADI