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All Journal Jurnal Mekanik Terapan Mimbar Agama Budaya
Ahmad, Zaid
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Religion Arts Humanities Automotive Engineering Education Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Linguistic Culture in Classical Arabic: Aesthetic Perspectives on Ḥadẓ and Ziyādah in the Qur’an Kojin, Kojin; Toriyono, Muhammad Dwi; Sibilana, Annas Ribab; Ahmad, Zaid; Salsabila, Ayna Jamila
Mimbar Agama Budaya Vol 42, No 1 (2025)
Publisher : UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/mimbar.v42i1.46612

Abstract

This research examines the aesthetics of language culture in the Qur'an through the analysis of language style ḥadẓ (disappearance) and ziyādah (additions) to the rules of grammar that deepen the meaning of holy verses. Ḥadẓ and ziyādah as a linguistic element not only affect the structure of the sentence but also strengthen the meaning, give an aesthetic impression, and invite spiritual reflection of the reader. This study aims to understand how the two language styles enrich the message in the Qur'an. Using qualitative methods and a semiotic approach, this study analyzes the signs and meanings behind the language elements that are displayed or omitted. The results of the survey show that ḥadẓ often used to simplify sentences without reducing meaning, creating a contemplative effect, and focusing attention on the core of the message. On the other hand, ziyādah enriches the text with emphasis and deepening of meaning. This combination of styles forms a distinctive aesthetic dimension, strengthening the message of the Qur'an structurally and meaningfully.
Evaluation of 850°C Heat Treatment: Effects of Used-Oil Quenching, Brine Quenching, and Pack Carburizing on the Rockwell Hardness of ST37 Shredder Blades Fajrul, Rahmat; Setyawan, Reinaldi Teguh; Ahmad, Zaid; Gunawan, Gunawan
Jurnal Mekanik Terapan Vol 7 No 1 (2026): April 2026
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v7i1.8320

Abstract

Waste shredder blades operate under abrasive contact and intermittent impacts from heterogeneous materials, making surface hardness a key property for maintaining cutting performance and reducing premature dulling. This study evaluates the effect of a 850°C heat-treatment route on the hardness of ST37 low-carbon steel used for shredder-blade applications. Plate specimens (100 mm × 100 mm × 10 mm) were prepared and tested under four conditions: untreated (as-received), pack carburizing using coconut-shell charcoal followed by furnace cooling, quenching in used oil, and quenching in saltwater (brine). Hardness was measured using the Rockwell C method (ASTM E18) with a diamond cone indenter (10 kgf minor load and 150 kgf major load). For each condition, ten hardness readings were collected and analyzed using one-way ANOVA (α = 0.05).The untreated specimens yielded an average hardness of 83.85 HRC. The pack-carburized and furnace-cooled condition resulted in a substantial decrease to 69.35 HRC, accompanied by higher variability, indicating a less favorable hardness response under the applied cooling route. In contrast, quenching after heating at 850°C increased hardness to 85.55 HRC for used-oil quenching and 88.35 HRC for brine quenching, with brine showing the highest mean value but also a wider scatter. ANOVA confirmed that the treatment route significantly influenced hardness (p < 0.05). Overall, the results indicate that, under the present parameters, quenching routes are more effective than the pack carburizing + furnace cooling route for improving blade hardness, while process consistency is important to control hardness dispersion, particularly for brine quenching.
Co-Authors Annas Ribab Sibilana Fajrul, Rahmat Gunawan Gunawan Kojin Muhammad Dwi Toriyono Reinaldi Teguh Setyawan Salsabila, Ayna Jamila