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Menampilkan 1–4 dari 4 artikel
Analisis Morfologi Rambut Sebelum dan Sesudah Rebonding Menggunakan Scanning Electron Microscopy (SEM)
Annisa Ananda
; Widyastuti Widyastuti
; Rohimatul Anwar
Jurnal Pendidikan Kimia, Fisika dan Biologi
Vol 2
, No 3
(2026)
Rebonding is a chemical hair straightening procedure widely popular in Indonesia, involving two-stage redox reactions on keratin disulfide bonds using ammonium thioglycolate and hydrogen peroxide. Although it provides effective hair-straightening results, rebonding potentially causes significant damage to the hair cuticle structure. This study aimed to analyze the morphological changes of hair surface before and after rebonding treatment through a descriptive comparative case study approach usin...
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Sample Preparation Technique for Scanning Electron Microscopy in Analyzing Shrimp Shell Biodegradation by Actinomycetes through Solid-State Fermentation
Widyastuti Widyastuti
; Annisa Ananda
; Rohimatul Anwar
; Kurniawan Shidiq
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Vol 4
, No 2
(2025)
Shrimp shell waste is a chitin-rich biopolymer with high potential for microbial bioconversion into value-added products. This study aimed to analyze the microstructural degradation of shrimp shells by the actinomycete isolate 18D38A1 under solid-state fermentation, using Scanning Electron Microscopy (SEM). A fresh sample preparation method was applied, involving washing and immersion in 70% ethanol, followed by vacuum drying and gold sputter-coating. Fermentation was conducted over a period of...
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Exploring the Potential of Astaxanthin Extracted from Shrimp Shell Waste as a Functional Feed Additive in Duck Nutrition
Anwar, Rohimatul
; Widyastuti Widyastuti
; Annisa Ananda
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Vol 3
, No 2
(2025)
Shrimp shell waste is a potential marine biomass resource rich in bioactive compounds such as astaxanthin and chitin, yet remains underutilized in the livestock sector. This study aimed to evaluate the effect of incorporating shrimp shell meal into duck (Anas sp.) feed rations on the yolk color intensity of duck eggs. The experimental design applied a completely randomized design (CRD) with a single factor and four treatments: D0 (100% rice bran, control), A1 (rice bran + 2% shrimp shell meal),...
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Masculinity in Stephen Graham & Jack Thorne’s Film Adolescence
Yosi Evelyn Tondang
; Nabila Shaini Putri
; Annisa Ananda
; Syamsul Bahri
Jurnal Ilmuan Bahasa dan Sastra Inggris
Vol 3
, No 2
(2025)
From past to present, masculinity has continuously shaped how men are expected to behave in society, especially in adolescence. The television series Adolescence highlights these expectations by portraying different male characters in their daily interactions, reflecting how masculinity operates in real life. This study aims to explore the types of masculinity displayed in the series based on R.W. Connell’s theory (2005), which classifies masculinity into hegemonic, complicit, subordinate, and m...
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