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All Journal Science and Technology Indonesia Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Psikologi Universitas Gadjah Mada Jurnal Farmasi Sains dan Terapan (Journal of Pharmacy Science and Practice)
Iqbal, Anwar
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences

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The Role of Emotional Creativity and Self-Disclosure in Post-traumatic Growth Among Healthcare Workers After the COVID-19 Pandemic Iqbal, Anwar; Utami, Muhana Sofiati
Jurnal Psikologi Vol 51, No 2 (2024)
Publisher : Faculty of Psychology, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpsi.90470

Abstract

Previous studies have shown that healthcare workers experienced post-traumatic growth (PTG) during the COVID-19 pandemic. Various factors, such as social support, coping strategies, and deliberate rumination, were also reported to positively influence healthcare workers’ PTG. This study examined the role of emotional creativity and self-disclosure in the PTG of healthcare workers handling COVID-19 patients. The study involved 186 healthcare workers recruited through convenience sampling. The Post-Traumatic Growth Inventory - Expanded (PTGI-X), Revised Self-Disclosure Scale (RSDS), and Emotional Creativity Inventory (ECI) were used to collect data in this study. Based on multiple regression analyses, the model consisting of emotional creativity and self-disclosure was able to predict PTG (F = 15.54; p < 0.001). Partially, the results indicated that emotional creativity significantly predicted PTG (β= 0.337; 95% CI = 0.198 - 0.477), whereas self-disclosure did not (β = 0.112; 95% CI= -0.027 - 0.251). Additional analyses showed that healthcare professionals with more than 20 years of working experience had significantly higher PTG than those with 11 – 20 years of working experience. This study implies that flexibility in expressing emotions is a more preferred and impactful psychological resource in helping healthcare workers face similar traumatic events in the future.
Biosorption of Methylene Orange Dye using Langsat Shell by Batch Method Kurniawati, Desy; Lestari, Intan; Tarmizi, Fadhilah; Pernadi, Niza Lian; Iqbal, Anwar
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 03 (2023): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol23-iss03/419

Abstract

Liquid waste is a major problem in the textile industry environment that has the most widespread influence because physical and aquatic characteristics can have a negative impact on waters. Most of the liquid waste produced by batik comes from the dyeing process and environmental pollution. If it is disposed of directly into the environment without prior processing, the environment has a limited ability to degrade dyestuffs. One alternative method to remove the dye in water contaminated with methyl orange is biosorption using a cheap and easily available biosorbent, such as a langsat shell. This study used a batch method with variations in pH, solution concentration, particle size, stirring speed, and contact time. The results of each variation carried out obtained the optimum conditions for the absorption of Methyl Orange, namely at: pH 4, concentration 150 mg/L, and particle size 150 μm. The adsorption isotherm study was carried out, the Langmuir equation yielded a regression coefficient value that was close to one (R2 = 0.9964) so that it could be said to be better with a maximum absorption capacity of 3.1164 mg/g
Decolorization of Synthetic Dyes by Laccase of Phellinus noxius BRB 11 Immobilized with Halloysite Nanotubes Naser, Inda Hastuti N; Kemala, Tetty; Yanto, Dede Heri Yuli; Purwaningsih, Henny; Nurhayat, Oktan Dwi; Ardiati, Fenny Clara; Bakar, N.H.H Abu; Iqbal, Anwar
Science and Technology Indonesia Vol. 10 No. 2 (2025): 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.2025.10.2.644-659

Abstract

Halloysite nanotubes (HNTs) have been proposed as promising supports for enzyme immobilization. Developing an effective technique for enzyme immobilization on HNTs is crucial for their practical application. In this study, we present a method for immobilizing laccase enzymes on HNTs using various amino acids as green cross-linkers for eco-friendly decolorization of synthetic dye. The modified HNTs were characterized using FT-IR, FE-SEM, and HR-TEM analyses. Furthermore, the effects of various parameters—including pH (ranging from 3 to 8), temperature (30-70°C), toxicity, and reusability—on the activity of both free and immobilized laccase were investigated. The results indicated that glycine (Gly) provided the most effective support for laccase immobilization on HNTs. The modified HNTs/Gly-Lac achieved an immobilization yield of 98.45% and successfully decolorized 94.60% of Acid Blue 129 (AB129) within 2 h. The successful immobilization of laccase onto functionalized HNTs was confirmed through FT-IR, FE-SEM, and HR-TEM analyses. Morphological observations of HNTs/Gly for laccase immobilization showed a thickened and roughened appearance with a thin, light gray layer on the outer surface. Additionally, the presence of an imine (-C=N-) bond peak and a peak at 1410 cm-1, corresponding to the (-NH) bond, suggested successful covalent immobilization. The toxicity analysis revealed a reduction in the toxicity of laccase after immobilization onto modified HNTs. A reusability assessment conducted over five cycles demonstrated that decolorization efficiency remained above 45%. These findings suggest that HNTs/GlyLac could serve as an effective material for textile dye wastewater treatment.
Aktivitas Imunomodulator Ekstrak n-Heksana, Etil Asetat, dan Metanol Biji Jinten Hitam (Nigella sativa L.) Prastiwi, Rini; ., Kisrini; Iqbal, Anwar; Kristi, Aprina
Jurnal Farmasi Sains dan Terapan (Journal of Pharmacy Science and Practice) Vol. 2 No. 2 (2015)
Publisher : Faculty of Pharmacy, Widya Mandala Surabaya Catholic University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/jfst.v2i2.724

Abstract

Jinten hitam (Nigella sativa L.) adalah tanaman yang memiliki aktivitas imunomodulator. Kandungan biji jinten hitam adalah minyak atsiri, alkaloid, saponin, tanin, polifenol dan minyak lemak. Penelitian bertujuan untuk mengetahui efek imunomodulator ekstrak biji jinten hitam dengan parameter fagositosis makrofag dan peningkatan imunoglobulin G. Penelitian menggunakan 30 ekor mencit balb/c yang dibagi ke dalam 6 kelompok. Kelompok I diberi ekstrak n-heksana dengan dosis 1,6843 mg/20 gBB, kelompok II diberi eksrak etil astat dosis 0,2682 mg/20 gBB, kelompok III diberi eksrak metanol dosis 0,4272 mg/20 gBB, kelompok IV kontrol positif menggunakan Imboost® dosis 0,065 mg/20 gBB, kelompok V diberi CMC 0,5%, dan kelompok VI kontrol negatif siklofosfamid dosis 2 mg/20gBB. Ekstrak diberikan selama 21 hari, hari ke-7 dan hari ke-14 masing-masing mencit diinjeksikan SRBC (Sheep Red Blood Cells) intraperitoneal. Pada hari ke-21 darah mencit diambil untuk diambil serumnya, kemudian kadar IgG diperiksa dengan ELISA reader. Fagositosis makrofag dilihat berdasarkan aktivitas dan kapasitas makrofag dari sediaan apus cairan intraperitoneal, dengan menghitung persentase 100 makrofag yang melakukan fagositosis. Kapasitas fagositosis ditetapkan berdasarkan jumlah lateks yang difagositosis oleh 50 makrofag aktif. Hasil yang didapatkan ekstrak biji jinten hitam memiliki potensi sebagai imunomodulator dan ekstrak n-heksana memiliki potensi yang tinggi sebagai imunostimulator diban-dingkan ekstrak lain dengan hasil rata-rata presentasi aktivitas fagositosis makrofag 89,5% dan kapasitas fagositosis makrofag 1204 lateks, begitu juga hasil dengan uji IgG. Kata kunci: jinten hitam, imunomodulator, IgG, makrofag.
Co-Authors Ardiati, Fenny Clara Bakar, N.H.H Abu Dede Heri Yuli YANTO Desy Kurniawati Henny Purwaningsih Intan Lestari Kisrini . Kristi, Aprina Muhana Sofiati Utami Naser, Inda Hastuti N Nurhayat, Oktan Dwi Pernadi, Niza Lian Rini Prastiwi Tarmizi, Fadhilah Tetty Kemala