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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Journal of English Education and Teaching (JEET) Stigma : Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Ulil Albab
Novita Sari
Universitas Islam Negeri Raden Fatah Palembang
Religion Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences

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UJI AKTIVITAS EKSTRAK METANOL DAUN KEBIUL (Caesalpinia bonduc L.) SEBAGAI BAHAN AKTIF SEDIAAN TABIR SURYA Novita Sari; Dwi Fitri Yani
CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Vol 9 No 2 (2021): Cakra Kimia (Indonesian E-Journal of Applied Chemistry)
Publisher : Graduate Program of Applied Chemistry, Udayana University, Bali-INDONESIA

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Abstract

ABSTRAK: Penelitian ini bertujuan untuk menentukan aktivitas tabir surya dari nilai SPF (Sun Protection Factor) Aktivitas tabir surya ditentukan dengan Penentuan SPF dilakukan dengan metode Spektrofotometri Uv-Vis. Kandungan senyawa kimia ditentkan dengan uji fitokimia. Hasil penelitian menunjukkan bahwa nilai SPF yang diperoleh dari konsentrasi 200, 400, 600, 800, dan 1000 ppm berturut-turut yaitu sebesar 2,4 (proteksi minimal); 4,7 (proteksi sedang); 7,8 (proteksi ekstra); 9,2 (proteksi maksimal) dan 11,3 (proteksi maksimal). Berdasarkan uji fitokimia, ekstrak metanol daun kebiul positif mengandung flavonoid, tanin, steroid, dan saponin. ABSTRACT: This study aims to determine the activity of sunscreen from the value of SPF (Sun Protection Factor). Sunscreen activity was determined by determining the SPF using the Uv-Vis Spectrophotometry method. The content of chemical compounds is determined by phytochemical tests. The results showed that the SPF values obtained from concentrations of 200, 400, 600, 800, and 1000 ppm were 2.4 (minimum protection); 4.7 (moderate protection); 7.8 (extra protection); 9.2 (maximum protection) and 11.3 (maximum protection). Based on the phytochemical test, the methanol extract of kebiul leaves was positive for flavonoids, tannins, steroids, and saponins
Analysis of Causing Factors on Teachers’ Code Switching Triana Novitasari; Dian Erlina; Fitri Alya Okta Sukma
Journal of English Education and Teaching Vol. 6 No. 3 (2022): Journal of English Education and Teaching
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jeet.6.3.398-416

Abstract

Code switching is an intriguing phenomenon to investigate because it is a part of the development process and the use of multiple languages (bilingual). In the world of education, both at the middle and upper levels, the use of code switching can be done by teachers or students in the classroom. This research was conducted to find out the factors causing teachers to do code switching in the classroom. The research method applied in this study was qualitative research in the form of a case study. The writers selected the participants for this research by using a convenience sampling technique. There were two teachers of English at SMA Negeri 15 Palembang, and those teachers were selected as the participants to collect the data. In collecting data, the writers used interviews through open-ended questions. Then, the writers analyzed the data obtained from the interview using a theme code system in the form of table codes, synchronizing the data with the aspects and items that prevailed in the interview protocol. The result of this research based on the interviews showed that there are two factors causing teachers to do code switching. Two factors are linguistics and non-linguistics. Language linguistics factors are divided into language stagnation and a lack of students’ knowledge of vocabulary. Furthermore, non-linguistical factors are divided into the emotional condition of the teacher and the condition of the class situation. Keywords: Code Switching; Actors of Code Switching; Linguistics; Non-Linguistics.
PENGARUH BENZYL AMINO PURIN (BAP) TERHADAP INDUKSI TUNASEKSPLAN TANGKAI DAUN (Petiolus) DAN TULANG DAUN (Penninervis) DUKU (Lansium domesticum Corr) PADA MEDIA MURASHIGE AND SKOOG ARIF YACHYA; Amin Nurokhman; Linda Novitasari; Ummi Hiras Habisukan
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 16 No 1 (2023)
Publisher : Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.16.1.7248.1-9

Abstract

Duku (Lansium domesticum. Corr) is one of the fruit plants that grows a lot in Indonesia, especially in South Sumatra. Duku fruit has a fairly high level of consumption but takes a long time to reproduce. Modern duku propagation is an effort that can be used to overcome problems that occur in conventional duku cultivation. One of the efforts to propagate duku in a modern way can be done through tissue culture techniques. Tissue culture techniques can produce plants in large quantities and have the same characteristics and characteristics as the parent. This research was conducted from September 2022 – November 2022, taking place in the tissue culture room, the Integrated Laboratory of Raden Fatah State Islamic University Palembang. This type of research is descriptive quantitative with experimental method using Completely Randomized Design (CRD) with 5 treatments (0.0 ppm, 1.0 ppm, 1.5 ppm, 2.0 ppm and 2.5 ppm) and 5 repetitions. This study was to determine the response of petiole and leaf bone explants to tuna induction by BAP hormone administration. The best research results were given a concentration of 1.0 ppm BAP with growth time at 7 HST with the formation of bulges (nodules) on the upper surface of the explants.
Upaya Guru Dalam Mengatasi Kesulitan Belajar Membaca Permulaan Siswa Kelas 1 SDN 4 Muara Padang Dian Novita Sari; Tutut Handayani; Fuaddilah Ali Sofyan
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 1 No. 4: Maret 2022
Publisher : CV. Ulil Albab Corp

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Abstract

Penelitian ini bertujuan untuk mengetahui kesulitan membaca permulaan siswa kelas 1 di SDN 4 Muara Padang. Metode yang di gunakan dalam penelitian ini adalah metode observasi, metode wawancara, dan metode dokumentasi. Subjek dalam penelitian ini yaitu wali kelas 1 dan siswa kelas 1 SDN 4 Muara Padang. Pendekatan yang digunakan yaitu pendekatan kualitatif yaitu dengan metode studi kasus. Focus utama dalam penelitian ini yaitu melihat bagaimana uapaya guru dalam mengatasi kesulitan belajar membaca permulaan siswa kelas 1 di SDN 4 Muara Padang.
Co-Authors Amin Nurokhman Arif Yachya Dian Erlina Dwi Fitri Yani Fitri Alya Okta Sukma Fuaddilah Ali Sofyan Tutut Handayani Ummi Hiras Habisukan