Yuni Kartika, Yuni
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Indonesia

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Relationship between Zingiberaceae Leaves Compounds and its Tyrosinase Activity Batubara, Irmanida; Kartika, Yuni; Darusman, Latifah K
Biosaintifika: Journal of Biology & Biology Education Vol 8, No 3 (2016): December 2016
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v8i3.6742

Abstract

The leaves of Zingiberaceae family has not been much explored its potential, especially as a skin lightening. The relationship between total anthocyanins, chlorophyll, carotenoids and tannins contents of Zingiberaceae leaves and tyrosinase activity were determined. Ten species of Zingiberaceae were separated by n-hexane and the residues were extracted with ethyl acetate. The total anthocyanins, chlorophyll, carotenoids, tannins contents and the activities of ethyl acetate extracts were determined by spectrometric method. The tyrosinase inhibition was determined by using L-tyrosine (monophenolase) and L-DOPA (diphenolase) substrates. The most active extract was the leaves extract of Zingiber purpureum which exhibited 82.86% for monophenolase inhibition and the leaves extract of Curcuma zedoaria which exhibited 90.20% for diphenolase inhibition. The correlation between carotenoids content and monophenolase inhibition was 52%, while between tannin content and diphenolase inhibition was only 15%. Therefore, among 10 leaves species of Zingiberaceae, Zingiber purpureum Roscoe and Curcuma zedoaria leaves are the most potential for tyrosinase inhibitors and can be developed as whitening agent.How to CiteBatubara, I., Kartika, Y. & Darusman, L. K. (2016). Relationship between Zingiberaceae Leaves Compounds and its Tyrosinase Activity. Biosaintifika: Journal of Biology & Biology Education, 8(3), 371-377.
ANALISIS KEMAMPUAN PEMAHAMAN KONSEP MATEMATIS PESERTA DIDIK KELAS VII SMP PADA MATERI BENTUK ALJABAR Kartika, Yuni
Jurnal Pendidikan Tambusai Vol. 2 No. 2 (2018): August 2018
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.551 KB) | DOI: 10.31004/jptam.v2i4.25

Abstract

Tujuan penelitian ini untuk mendiskripsikan kemampuan pemahaman konsep peserta didik kelas VII MTs Muhammadiyah pada pembelajaran matematika. Metode penelitian yang digunakan adalah metode deskriptif dan data dianalisis menggunakan triangulasi data yang terdiri dari tiga aktivitas yaitu, reduksi data, penyajian data dan kesimpulan. Dari hasil tes kemampuan pemahaman konsep matematis peserta didik didapatkan kemampuan peserta didik masih tergolong rendah pada materi bentuk aljabar
KORELASI ANTARA KEMAMPUAN MENYIMAK PEMBACAAN PUISI DENGAN KEMAMPUAN MEMBACA PUISI DI KELAS III Kartika, Yuni; Sabri, Tahmid; Halidjah, Siti
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 4, No 9 (2015): SEPTEMBER 2015
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

Abstrak: penelitian ini bertujuan untuk mendeskripsikan hubungan antara kemampuan menyimak pembacaan puisi dengan kemampuan membaca puisi di kelas III A Sekolah Dasar Negeri 64 Sungai Raya Kabupaten Kubu Raya. Metode yang digunakan dalam penelitian ini menggunakan metode deskriptif. Hasil penelitian ini menunjukan bahwa kemampuan menyimak pembacaaan puisi sangat berhubungan dengan kemampuan membaca puisi, hal ini dibuktikan dengan nilai rata-rata kemampuan siswa menyimak pembacaan puisi sebesar 64,5 sedangkan nilai rata-rata kemampuan membaca puisi sebesar 65,5. Jika dikorelasikan sebesar 0,50. Dengan melihat r tabel sebesar 0,413 maka  Kesimpulan umum dari penelitian ini adalah terdapat hubungan yang signifikan antara kemampuan menyimak pembacaan puisi dengan melihat rxy < r tabel (0,50>0,413) maka Ha diterima dan Ho ditolak. Kata kunci: korelasi, kemampuan menyimak pembacaan puisi, kemampuan membaca puisi. Abstrack: this research is aimed to describe the correlation between listening ability in reading poetry with. reading ability of poetry to the third grade students a of SDN 64 Sungai Raya in Kubu Raya regency. the method of research used descriptive method. the result of this research showed that listening ability connect with reading ability of poetry. it showed that the students’ mean score in listening ability was 64.5 while the students’ mean score in reading ability of poetry was 65.5. so, the result of correlation was 0.50. by looking the table of “r” was 0.413 so the general conclusion in this research was the correlation the significant between listening ability in reading poetry and reading ability of poetry by seeing the table of rxy < r table (0.50>0.413) so that, the simbol of Ha was accepted and Ho was refused. Keywords: correlation, listening ability, reading poetry  
PEMALI DALAM BUDAYA ETNIK BALI DI SAMARINDA: SUATU TINJAUAN SEMIOTIKA Kartika, Yuni; Arifin, M. Bahri; Rijal, Syamsul
Ilmu Budaya: Jurnal Bahasa, Sastra, Seni dan Budaya Vol 4, No 3 (2020): Juli 2020
Publisher : Fakultas Ilmu Budaya Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jbssb.v4i3.2857

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ABSTRAKPenelitian ini membahas tentang makna tanda semiotika pemali pada masyarakat etnik Bali yang berdomisili di Samarinda. Adapun tujuan dari penelitian adalah untuk (1) mengetahui pemali apa yang diketahui dan dilaksanakan oleh masyarakat etnik Bali; (2) mendeskripsikan makna tanda yang terkandung dalam pemali etnik Bali. Penelitian ini termasuk penelitian lapangan menggunakan pendekatan kualitatif dengan metode deskriptif. Data penelitian ini berupa teks pemali yang diketahui dan dilaksanakan oleh masyarakat etnik Bali, sedangkan sumber data dalam penelitian ini, yaitu informan masyarakat etnik Bali. Pengumpulan data dilakukan dengan teknik wawancara, pererekaman, dan pencatatan. Kemudian, data dianalisis dengan menggunakan teori semiotika Roland Barthes yang dapat dilihat dari makna denotatif atau makna nyata (sebenarnya) yang sesuai kamus adalah pemaknaan tingkat satu, dan makna konotatif atau makna kiasan adalah bentuk akibat yang akan menjadi tanda pemaknaan tingkat dua, dan akan menjadi mitos. Dalam penelitian ini dikumpulkan 23 pemali yang diketahui dan 16 pemali yang dilaksanakan, terkait data PL 1-6 berkaitan dengan kesehatan, data PL 7-14 berkaitan dengan keselamatan, data PL 15-16 berkaitan dengan rezeki. ABSTRACTThis study discusses the meaning of the sign Pamali in ethnic Balinese people residing in Samarinda. This study aims to (1) what pamali that are meognizer and proctecol the Bali ethnic community in samarinda city; (2) describ the meaning of sign contained in the pamali of Balinese ethnic. This research is a field research using qualitative approaches with descriptive methods. The data of this study were in the from of pamali text that were known and conducted by the Balinese ethnic community in Samarinda ciy, which the data source was the informant of ethnic Balinese. Data collection was done by interview, recording, and note taking techniques. Then, the data were analyzed using Roland Barthes semiotic theory which sees the sign in two levels of meaning, namely first level meaning (dennotation) and second level meaning (connotations) in this study collected 23 pamali know and 16 pamali conducted, including PL 1-6 data relating to health, PL 7-14 data relating to safety, PL 15-16 data relating to fortune.
PENERAPAN POLA HIDUP BERSIH DAN SEHAT UNTUK MENINGKATKAN IMUNITAS TUBUH DI DESA KALIRANCANG, ALIAN, KEBUMEN Kartika, Yuni; Pramestian, Farida; Masayu, Nahdiah; Hasanah, Fathurrohmah; Fera, Febri; Arifin, Ridwan
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 7, No 1 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v7n1.p78-87

Abstract

A clean and healthy lifestyle (PHBS) is a set of behaviors that are practiced on the basis of awareness as a result of learning that makes a person, family, group or community able to help themselves (independently) in the health sector and play a role in realizing public health. The student group KKN BMC UNNES 2020 has a mission to make the people of Kalirancang Village, Alian District, Kebumen Regency, Central Java aware of implementing a clean and healthy lifestyle (PHBS) in their daily life, especially during the Covid-19 pandemic. The method of implementing KKN includes socialization and counseling on the application of a clean and healthy lifestyle (PHBS) directly to the people of Kalirancang Village, Alian District, which is the object. Several activities are carried out, such as weighing the baby every month, using clean water, washing hand use soap, healthy eating patterns, and doing bodily activities. The results achieved through these activities are being able to make people aware of the importance of implementing a clean and healthy lifestyle (PHBS) and can provide knowledge to the community regarding how to properly implement a clean and healthy lifestyle so that people can implement PHBS regularly in their daily life.