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All Journal Menawan : Jurnal Riset dan Publikasi Ilmu Ekonomi Jurnal Indah Sains dan Klinis Sosiolium: Jurnal Pembelajaran IPS
Nanda Lestari
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Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Health Professions Medicine & Pharmacology Nursing

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Pembuatan Hidrogel Berbasis Mikrokristal Selulosa Daun Nanas (Ananas comosus L. Merr) dengan Variasi Volume Glutaraldehid Muhammad Gunawan; Nanda Lestari
Jurnal Indah Sains dan Klinis Vol 1 No 1 (2020): Jurnal Indah Sains dan Klinis
Publisher : Yayasan Penelitian dan Inovasi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52622/jisk.v1i1.3

Abstract

Pineapple leaves natural fibers contain lignin, hemicellulose, and cellulose. The cellulose content of pineapple leaves is around 69.5% -71.5%. Cellulose-derived microcrystals can be used in the pharmaceutical field as binders in tableting formulations. The research objective was to determine whether pineapple leaves can produce microcrystals, microcrystals can be used in the manufacture of hydrogels and to determine variations in the volume of glutaraldehyde that can affect hydrogels. Experimetal researchbegan with delignification with 4% NaOH, immersed for 1 hour and heated, washed with distilled water until neutral pH and blended with 2.7% NaOH, 7.9% acetic acid, NaOCl until white, heated, the residue was taken and drained. , soaked in 1 N HCl, reheatedfor 2 hours, re-stirred and blended until smooth. Cellulose hydrogel was dissolved in 8.5% NaOH and added with glutaraldehyde in various volume variations. Cellulose and hydrogel microcrystals were characterized by visual, swelling ratio test, FTIR, SEM and XRD. The yield of microcrystalline cellulose was 22%, white, homogeneous. Cellulose and hydrogel microcrystals contain O-H (3800-2700 cm-1), C-H (3000-2850 cm-1) and C-O (1300-800 cm-1) groups. Microcrystalline cellulose can be made from pineapple leaves, hydrogel formation is influenced by variations in the volume of glutaradehydeand the highest and lowest swelling ratios are 400% and 12.5%, respectively.
IMPLEMENTASI PROBLEM BASED LEARNING BERBANTUAN MEDIA FLIPBOOK PADA MATERI AKTIVITAS MASYARAKAT MASA LALU Nanda Lestari
Sosiolium: Jurnal Pembelajaran IPS Vol. 6 No. 1 (2024): April
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sosiolium.v6i1.4899

Abstract

Learning outcomes are an important indicator that reflects the level of understanding and achievement of students in a particular subject or skill. Based on observations made in class VII-C of SMP N 27 Semarang, problems were found where students had low learning outcomes in Social Sciences (IPS) subjects. This is shown by the score data in the Natural Resources chapter where 28 students were declared incomplete out of a total of 31 students. This Classroom Action Research (PTK) aims to analyze the application of the Problem Based Learning learning model assisted by Flipbook learning media in improving learning outcomes in social studies subjects in class VII-C students at SMP N 27 Semarang. Data collection methods are carried out through test, observation and documentation techniques. In this research, it was found that the application of the Problem Based Learning model assisted by Flipbook learning media could improve the learning outcomes of class VII-C students at SMP N 27 Semarang. In cycle I, 32 percent of students were declared complete and this increased by 45 percent in cycle II to 77 percent. 
Pengaruh Digital Marketing, Promo Shopee Tanggal Istimewa dan FOMO terhadap Minat Beli di Marketplace Shopee : Shopee Studi pada Mahasiswa UIN Datokarama Palu Nanda Lestari; Amanda Amanda; Febriani Febriani; Juriati Bin Sail; Alfian Alfian
MENAWAN : Jurnal Riset dan Publikasi Ilmu Ekonomi Vol. 3 No. 5 (2025): September : MENAWAN: Jurnal Riset dan Publikasi Ilmu Ekonomi
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/menawan.v3i5.1792

Abstract

The development of digital technology has brought about significant changes in marketing strategies, particularly in the increasingly competitive e-commerce sector. Shopee, as one of the largest marketplaces in Southeast Asia, utilizes digital marketing strategies intensively, including the use of various social media channels, paid advertising, and creative campaigns. Furthermore, Shopee holds massive promotions on special dates such as 9.9, 11.11, and 12.12, packaged with discounts, free shipping, and limited-time offers. This strategy also triggers the Fear of Missing Out (FOMO) phenomenon, where consumers are encouraged to make purchases immediately for fear of missing out on the opportunity to get the best deals. This study aims to analyze the influence of digital marketing, Shopee promotions on special dates, and FOMO on the purchasing interest of students at UIN Datokarama Palu. The study used a quantitative approach with a survey method. The sample consisted of 100 respondents selected using a simple random sampling technique. The research instrument was a questionnaire with a Likert scale, while data analysis was carried out using multiple linear regression using the SPSS program. The results showed that the digital marketing variable (X1) did not have a significant effect on student purchasing interest. In contrast, Shopee's special date promo (X2) and FOMO (X3) proved to have a positive and significant impact. These findings indicate that direct promotional strategies that provide tangible benefits and an emotional, urgency-based approach are more effective in influencing consumer behavior than general digital marketing strategies. Therefore, for e-commerce players, strengthening promotional campaigns that capitalize on specific moments and emotional triggers can be key to increasing sales among young consumers.
Co-Authors Alfian Alfian Amanda Amanda Febriani Febriani Juriati Bin Sail Muhammad Gunawan