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Efek Imunostimulan Ekstrak Etanol Kelopak Bunga Rosella Wulandari, Dita; Puri, Putri Ratna; W, Ratna Kurnia; Nurkhasanah, .
Jurnal Farmasi Indonesia Vol 7, No 1 (2014)
Publisher : Jurnal Farmasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.759 KB) | DOI: 10.35617/jfi.v7i1.150

Abstract

The aims of this study was to determine the immunostimulant potential ethanolic extract of roselle calyx through the proliferation of lymphocytes and phagocytosis ability of macrophages Balb/c mice in vitro. Dried calyx of roselle were extracted using 96% ethanol by maceration method is further polyphenols assay are qualitatively and quantitatively. Vitro test using with immunostimulants are seeing an increase in lymphocyte proliferation using the MTT method and phagocytosis activity macrophages with latex beads. Lymphocyte proliferation is expressed by the difference in absorbance values between treatment and control groups, where as the ability of phagocytosis is expressed as an index of phagocytosis and the SFA. Concentration of extract used was 10-1000 μg/mL. Ethanolic extract of roselle calyc containing polyphenols with total polyphenol content (TPC) of 2.757%. Ethanol extract of roselle calyx enhanced immune response at low concentrations. Concentration  of 100 μg/mL is the optimal concentration that increased proliferation of lymphocytest. The highest index of phagocytosis and SFA are at concentrations of 150 μg/mL and 250 μg/mL. It can be concluded that ethanolic extract of roselle calyx has potential as immunostimulants.Keywords : roselle, immune response, macrophage phagocytosis, lymphocyte proliferation, immunostimulant.
PERBANDINGAN KENAKALAN REMAJA ANTARA REMAJA PEDESAAN DAN REMAJA PERKOTAAN (STUDI KASUS SMA X DAN SMA Y) Widya Ramailis, Neri; Wulandari, Dita
SISI LAIN REALITA Vol 6 No 1 (2021): Sisi Lain Realita PERILAKU MENYIMPANG
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Adolescence seems to never be separated from the name of delinquency or social deviation. Many factors are the cause of juvenile delinquency. Every teenager has different personalities and lives in different environments, and that causes each teenager to have different causes and forms of delinquency. Like rural youth and urban youth. Between rural teenagers and urban teenagers have very big differences such as the environment, family, education, relationships, and so on. Through quantitative research methods by distributing questionnaires in two schools namely SMA X and SMA Y as representatives of rural youth and urban youth, as well as conducting interviews with BK teachers of both schools, researchers found that SMA X in Maredan village has a record of the delinquency that occurs in 2018 included truancy, courtship, smoking and theft. SMA Y in Pekanbaru City has a record of the forms of delinquency that occurred in 2018, among others, namely truancy, courtship, smoking, immorality, theft, and class fights. While the causes of delinquency that the researchers analyzed using social ties theory showed the results of a dominant to non-dominant indicator arrangement, namely commitment, attachment, belief, and involvement. And SMA Y is attachment, commitment, belief, and involvement.
Customer Satisfaction as a Priority in Excellent Banking Services Wulandari, Dita
KINERJA: Jurnal Manajemen Organisasi dan Industri Vol. 1 No. 1 (2022): KINERJA: Jurnal Manajemen Organisasi dan Industri
Publisher : Sekolah Menengah Kejuruan (SMK) Pustek

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37481/jmoi.v1i1.5

Abstract

The most important thing from a business is the customer, so satisfying and pleasing him is a necessity. The company realizes that the fulfillment of customer needs and desires (both physical and emotional) can give birth to loyal behavior, which has an impact on increasing sales/profits. In the banking business, presenting excellent service performance is one of the efforts to provide satisfaction, so that loyalty is built. This study is intended to analyze the phenomenon of bank customer loyalty through satisfaction by building excellent service and providing added value. The method used to analyze the phenomenon is quantitative with regression statistics as the basis for disclosure. The research subjects were BNI Jakarta bank customers, with a total of 100 correspondents. The data collection technique used purposive method by distributing research questionnaires. The results of the study identify, the most likely opportunity for the birth of loyal behavior is to build satisfaction through service. This happens because the service provides overall satisfaction, both psychological satisfaction and needs.
Fermented Black Rice Extract (Oryza sativa) Induces Morphological Changes in Pathogenic Microorganisms Wijayanti, Ernanin Dyah; Syafah, Lailiiyatus; Rahayu, Lina Oktavia; Wulandari, Dita; Ibrahim, Zalikha
Biosaintifika: Journal of Biology & Biology Education Vol. 17 No. 1 (2025): April 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v17i1.17185

Abstract

Black rice (Oryza sativa L.) contains nutrients and bioactive compounds with potential application in health, including antimicrobial properties. To date, the application of fermentation to black rice to enhance its bioactivity, particularly as an antimicrobial, remains unclear. This study aims to evaluate the antimicrobial activity of solid fermented black rice against Gram-positive bacteria, Gram-negative bacteria, and fungi. Black rice was fermented using Saccharomyces cerevisiae under solid-state conditions. Extraction was carried out by maceration using 96% ethanol. Antimicrobial activity was assessed using the well diffusion test method, agar dilution, and scanning electron microscope (SEM). Fermented black rice extract showed antimicrobial activity against all tested microbes. The minimum inhibitory value obtained was 20% against all microbes, but the minimum bactericidal/fungicidal concentration (MBC/MFC) could not be determined. The SEM analysis showed morphological changes in microbes exposed to fermented black rice extract, including cell shrinkage, elongation, and lysis in Bacillus cereus, fragmentation and irregular cell shape in Escherichia coli, cell size reduction in Staphylococcus aureus, and bleb formation in Candida albicans. These changes indicate the mechanism of microbial growth inhibition. We found that fermented black rice (EFBR) extracts produce different effects from unfermented black rice extracts (EUBR), which tend to induce biofilm formation. We propose that EFBR functions as an antimicrobial by rupturing cell walls, preventing cell division and DNA synthesis. This research provides new insights into natural antimicrobial mechanisms at the cellular level and offers a potential alternative for addressing antimicrobial resistance. Solid fermented black rice may serve as a valuable source of antimicrobial compounds for developing health products or natural preservatives.
The Effect of Art Therapy on Students' Learning Motivation at Madrasah Tsanawiyah: A Pre-Experimental Study with Wilcoxon Test Wulandari, Dita; Ananda, Aulia Syalwa Risky; Zainuddin, Aulia Zahwa; Cahyani, Dwi Nadya
Seurune : Jurnal Psikologi Unsyiah Vol 8, No 1: Januari 2025
Publisher : Program Studi Psikologi, Fakultas Kedokteran, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/s-jpu.v8i1.43173

Abstract

This study investigates whether art therapy affects the learning motivation of students at Madrasah Tsanawiyah Islamiyah. A quantitative approach was employed, and data collected from pre-tests and post-tests were analyzed using the Wilcoxon Signed Rank Test. The sample consisted of 41 seventh and eighth-grade students from MTs Islamiyah. Based on the Wilcoxon test results, the calculated T value was 1.353, while the Z table value was 1.64. Thus, 1.353 1.64, indicating that H0 is accepted and H1 is rejected. Therefore, art therapy was not effective in increasing students' learning motivation.
Dimensi Sosial Emosional Pada Buku Teks Prigel Basa Jawa Kelas X Wulandari, Dita; Mujimin, Mujimin
Metta : Jurnal Ilmu Multidisiplin Vol. 5 No. 3 (2025)
Publisher : Jayapangus Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37329/metta.v5i3.4779

Abstract

Good learning is adapted to the mental age of students. In the Kurikulum Merdeka, mental age is grouped into phases. One of the ways to fulfill teaching materials in each phase is using textbooks. The material presented in textbooks must comply with the principles of material development, namely suitability, consistency and adequacy. This research aims to describe the social emotional dimensions of students in the class X Prigel Basa Jawa textbook published by Erlangga. This research uses a qualitative approach with descriptive methods. The data in this research are in the form of reading texts, material descriptions, and practice questions containing aspects of the social emotional development of SMA/SMK/MA students. The data source in this research is the Prigel Basa Jawa textbook published by Erlangga. The data collection technique uses document review techniques. The research instrument in this study uses data cards as a tool in recording research data. The data found was then analyzed using aspects of social emotional development proposed by Wolfinger. The results of the research show that in the Prigel Basa Jawa textbook there are 130 pieces of data containing the social emotional dimensions of SMA/SMK/MA students. After being distributed into social emotional aspects, the research results showed that there were 19 data showing aspects of empathy, 19 data showing aspects of affiliation, 16 data showing aspects of conflict resolution, and 76 data showing aspects of developing positive habits.
THE RELATIONSHIP BETWEEN KNOWLEDGE, TRAINING AND EXPERIENCE WITH FIRE EMERGENCY PREPAREDNESS IN WAREHOUSE PT. X BATAM IN 2023 Wulandari, Dita; amaliah, rizqi ulla; Sundaru, Agung
Jurnal Kesehatan Ibnu Sina (j-kis) Vol. 5 No. 1 (2024): Jurnal Kesehatan Ibnu Sina
Publisher : Fakultas Ilmu Kesehatan, Universitas Ibnu Sina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36352/j-kis.v5i1.691

Abstract

Latar Belakang: Kebakaran adalah peristiwa yang melibatkan pembakaran bahan-bahan yang mudah terbakar seperti kayu, kertas, plastik, atau bahan bakar. Ini adalah kejadian darurat yang seringkali dapat menyebabkan kerusakan besar, cedera fisik, atau bahkan kematian. Kebakaran dapat terjadi di berbagai lokasi, termasuk rumah, bangunan komersial, hutan, dan fasilitas industri. Tujuan: mengetahui hubungan kompetensi pekerja dengan kesiapsiagaan tanggap darurat kebakaran di Warehouse PT. X Kota Batam. Jenis penelitian yang digunakan penulis dalam penelitian ini ialah jenis penelitian jenis penelitian survey dengan metode kuantitatif, dikarenakan dalam menentukan hubungan kompetensi pekerja dengan kesiapsiagaan tanggap darurat kebakaran di warehouse PT. X Kota Batam. Metode: Penelitiankuantittatif cross sectional dengan populasi dan sampel sebanyak 40 pekerja di Warehouse PT X Kota Batam. Uji Chi-Square digunakan untuk analisis data uji statistik. Teknik pengambilan sampel yaitu dengan total sampling. Instrumen pengumpulan data menggunakan kuesinoner. Hasil Terdapat hubungan antara pengetahuan dengan kesiapsiagaan dalam menghadapi keadaan darurat kebakaran di Warehouse PT. X Kota Batam Tahun 2023, dibuktikan dengan nilai P-value sebesar 0.18 atau nilai sig a 0.05. Terdapat hubungan antara pelatihan dengan kesiapsiagaan dalam menghadapi keadaan darurat kebakaran di Warehouse PT. X Kota Batam Tahun 2023, dibuktikan dengan nilai P-value sebesar 0.014 atau nilai sig a 0.05. Terdapat hubungan antara pengalaman dengan kesiapsiagaan dalam menghadapi keadaan darurat kebakaran di Warehouse PT. X Kota Batam Tahun 2023, dibuktikan dengan nilai P-value sebesar 0.18 atau nilai sig a0.002. Kesimpulan: Ada hubungan antara kompetensi pekerja dengan kesiapsiagaan tanggap darurat kebakaran di Warehouse PT X Kota Batam 2023. Saran: Pekerja perlu meningkatkan kembali kesadaran akan pentingnya pengetahuan mengenai kesiapsiagaan tanggap darurat kebakaran yang ada di tempat kerja.