Dian Ratna Sari
Program Studi Budidaya Perairan, Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

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PENGARUH PERENDAMAN EKSTRAK BAWANG PUTIH (ALLIUM SATIVUM) TERHADAP KELULUSHIDUPAN DAN HISTOLOGI GINJAL IKAN LELE (CLARIAS GARIEPINUS) YANG DIINFEKSI BAKTERI “EDWARDSIELLA TARDA” Sari, Dian Ratna; Prayitno, Slamet Budi; Sarjito, -
Journal of Aquaculture Management and Technology Volume 3, Nomor 4, Tahun 2014
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Keberadaan bakteri E. tarda yang menyerang ikan lele dumbo dalam kegiatan budidaya merupakan masalah yang serius karena ikan ini memiliki nilai ekonomis tinggi. Salah satu cara yang dapat dilakukan untuk mengatasi permasalahan tersebut dengan menggunakan bahan alami, seperti bawang putih yang memiliki sifat antibakteri. Bawang putih adalah salah satu tanaman alami yang mengandung bahan-bahan aktif senyawa sulfur seperti aliin, allicin, disulfida, trisulfida. Penelitian ini bertujuan untuk mengetahui kemampuan ekstrak bawang putih sebagai antibakteri E. tarda, mengetahui pengaruh perendaman ekstrak bawang putih terhadap kelulushidupan ikan lele dumbo yang diinfeksi bakteri E. tarda, mengetahui kelainan histologi ginjal ikan lele dumbo yang diinfeksi bakteri E. tarda, sertamengetahui dosis yang terbaik dari ekstrak bawang putih dalam penelitian ini.Metode penelitian yang digunakan dalam penelitian ini adalah metode eksperimental dengan menggunakan Rancangan Acak Lengkap yang terdiri dari 4 perlakuan dan 3 kali pengulangan. Perlakuan yang digunakan yaitu perlakuan A (dosis 0 ppm), B (dosis 1000 ppm), C (dosis 2000 ppm) dan D (dosis 3000 ppm). Ikan lele yang digunakan sebanyak 120 ekor dengan ukuran rata-rata 9,07±0,21 cm selanjutnya diinfeksi bakteri E. tarda dengan kepadatan 107 CFU/mL. Hasil penelitian menunjukkan bahwa pada uji sensitivitas ekstrak bawang putih mampu memberikan efektivitas antibakteri secara in vitro. Perendaman ekstrak bawang putih berpengaruh nyata (P<0,05) terhadap kelulushidupan ikan lele yang diinfeksi bakteri E. tarda. Nilai kelulushidupan terendah hingga tertinggi dimulai pada perlakuan A sebanyak 13,13%, B sebesar 56,67%, D sebesar 56,67% dan C sebanyak 76,67%. Kelainan jaringan yang terjadi pada organ ginjal yaitu kongesti, nekrosis dan degenerasi vakuola. Dari penelitian ini dapat disimpulkan bahwa konsentrasi terbaik ekstrak bawang putih untuk mengurangi infeksi E. tarda adalah dosis 2000 ppm. The existence of E. tarda was a serious problem in Catfish farming, that caused  high economic losses in aquaculture. One of the effort to solve this case was the use of  natural ingredient, such as garlic extract which has antibacterial substances. Garlic is a natural plant which contains active ingredients such as sulfur compound, aliin, allicin, disulphide and trisulfida as antibacterial substances. The aims of this research were to determine the ability of garlic extract as an antibacterial of E. tarda, the soaking effect of garlic extract toward survival rate of catfish infected by E. tarda, to observe the abnormalities of liver and kidney in histologically and to determine the best dose of garlic extract to cope E. tarda.  This reasearch used experimental method using a completely randomized design with  4 treatments and 3 repetitions. These treatments were  A (0 ppm), B (1000 ppm), C (2000 ppm) and D (3000 ppm). The Catfish used were 120 fish, around 9,07±0,21 cm in size, then they were infected by E. tarda with dose 107 CFU/mL. The result of this research showed that on antibacterial sensitivity test of garlic extract was able to make an antibacterial effect from in vitro test. The soaking of garlic extract showed a significant effect (P<0.05) toward survival rate of Catfish infected by E. tarda. The lowest to higest of survival rate were treatment A (13.13%), B (56.67%), D (56.67%) and C (76.67%). The observation of histology in kidney showed congestion, necrosis and vacuola degeneration. From that research it can be concluded that the best garlic extract concentrations to reduce E. tarda infection was 2000 ppm.
PENGARUH KEPEMIMPINAN DAN KEMAMPUAN BERKOMUNIKASI TERHADAP MOTIVASI BELAJAR MATA PELAJARAN EKONOMI Marimin, -; Sari, Dian Ratna
Dinamika Pendidikan Vol 1, No 2 (2006): December 2006
Publisher : Fakultas Ekonomi, Universitas Negeri Semarang

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Tujuan dari penelitian ini adalah untuk mengetahui adakah pengaruh kepemimpinan dan kemampuan berkomunikasi guru terhadap motivasi belajar mata pelajaran ekonomi baik secara parsial maupun secara simultan dan  untuk mengetahui besarnya pengaruh  kepemimpinan dan kemampuan berkomunikasi guru terhadap motivasi belajar mata pelajaran ekonomi pada siswa kelas XI IPS SMA N 1 Sragi kabupaten Pekalongan tahun pelajaran 2005/2006. Populasi dalam penelitian ini adalah seluruh siswa kelas XI IPS SMA N 1 Sragi Kabupaten Pekalongan sebanyak 147 siswa yang terbagi dalam 3 kelas. Sampel penelitian diambil berdasarkan teknik Proporsional Random Sampling. Penentuan jumlah sampel berdasarkan rumus Slovin diperoleh banyaknya sampel 60 siswa. Variabel dalam penelitian ini terdiri dari kepemimpinan dan kemampuan berkomunikasi guru sebagai variabel bebas dan motivasi belajar siswa sebagai variabel terikat. Metode pengumpulan data menggunakan angket. Analisis data menggunakan analisis deskrpitif persentase dan regresi berganda. Hasil analisis deskriptif persentase menunjukkan bahwa variabel kepemimpinan termasuk dalam kategori baik dengan bobot persentase skor 70,00%, kemampuan berkomunikasi guru termasuk kategori baik dengan bobot persentase  skor sebesar 61,67% dan motivasi belajar siswa termasuk kategori tinggi dengan bobot persentase 58,33%. Besarnya pengaruh masing-masing variabel yaitu kepemimpinan terhadap motivasi belajar siswa sebesar 14,62%, dan pengaruh kemampuan berkomunikasi guru terhadap motivasi belajar siswa sebesar 17,52%. Kata Kunci : Kepemimpinan, Kemampuan Berkomunikasi, Motivasi
KELIMPAHAN DAN KEANEKARAGAMAN KUPU-KUPU DI KAWASAN TAMAN NASIONAL GUNUNG MERBABU, JAWA TENGAH Sari, Dian Ratna; Hadi, Mochamad; Rahadian, Rully
Bioma : Berkala Ilmiah Biologi Vol. 18, No.2, Tahun 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (94.804 KB) | DOI: 10.14710/bioma.18.2.173-179

Abstract

Butterflies are insects that have very important role in the ecosystem, they are as a pollinator of plants. Butterfly also can be used as a bio-indicator of environmental quality. This study aims to determine the species abundance and diversity of butterflies in the area of Merbabu Mountain National Park. This research was conducted in September and November 2016 in four habitat types, i.e., mixed forests, pine forests, mountain forests and streams. The study was conducted using a purposive sampling method. The data analysis used abundance index and diversity index. There are 454 individuals wich includes 61 species and 6 families. There are 11 dominant species of butterflies in Merbabu Mountain National Park, but only Ypthima pandocus that dominates in all the habitat that studied. Mycalesis moorei and Mycalesis sudra are dominant in all forest habitats and its not dominant in the habitat of the streams. Papilio peranthus and Parantica albata are dominant and only in mountain forest habitat. Diversity of butterflies in the area of Merbabu Mountain National Park can be categorized as moderate with the diversity index from 2,11 ? 3,37. Key word: Butterflies, diversity, abundance, Merbabu Mountain National Park
PENGETAHUAN DAN SIKAP LANSIA TERHADAP PERILAKU HIDUP BERSIH DAN SEHAT DI PANTI WERDHA BANDA ACEH sari, dian ratna; khairani, khairani
Jurnal Ilmiah Mahasiswa Fakultas Keperawatan Vol 2, No 4 (2017)
Publisher : Jurnal Ilmiah Mahasiswa Fakultas Keperawatan

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Perilaku hidup bersih dan sehat merupakan perilaku yang didasari atas kesadaran seseorang yang dapat meningkatkan kesehatan dan melindungi dari berbagai ancaman penyakit disekitar. Tujuan penelitian ini untuk mengetahui pengetahuan dan sikap lansia terhadap perilaku hidup bersih dan sehat di Panti Werdha Banda Aceh. Jenis penelitian ini adalah deskriptif. Responden dalam penelitian ini adalah lanjut usia sebanyak 52 orang yang diperoleh dengan metode total sampling. Alat pengumpulan data berupa kuesioner dengan cara wawancara terpimpin. Hasil pengolahan data menunjukkan pengetahuan lansia berada pada kategori baik jumlah 33 responden (63,5%) dan hasil pengolahan data sikap lansia berada pada kategori baik jumlah 29 responden (55,8%), Diharapkan bagi Dinas Sosial agar tetap mempertahankan serta lebih meningkatkan informasi kesehatan terhadap lanjut usia yang berada di Panti Werdha Banda Aceh sehingga lanjut usia dapat meningkatkan penerapan perilaku hidup bersih dan sehat.
METODE PEMBELAJARAN BERKIRIM SALAM DAN SOAL TERHADAP HASIL BELAJAR SISWA PADA TEMA INDAHNYA NEGERIKU KELAS IV SDN 6 SUWAWAL Reffiane, Fine; Sari, Dian Ratna
Malih Peddas (Majalah Ilmiah Pendidikan Dasar) Vol 4, No 1 (2014): MALIH PEDDAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/malihpeddas.v4i1.532

Abstract

This research is based on the fact that students are still confused in accepting materials given by teachers in the learning proces inside the classroom. This condition makes the students result be low, teacher explains or speaks much in the classroom so they are less entusiastic in learning the materials so they cannot accept well what the teacher give to them. The problem of this research is that is there any effect on learning sending greeting and exercises toward the students study result on the theme what a beautiful country i have, grade IV students of SDN 6 Suwawal. The purpose to be achieved is that to find out is there any effect on learning sending and greeting and exercises toward the students study result on the theme what a beautiful country i have grade IV students of SDN 6 Suwawal?é?á?é?á?é?á .This is a kuantitative research. The population of this research are all students of grade IV in SDN 6 Suwawal Jepara. The sampling taken are 40 students using probability sampling technique especially cluster sampling. Data of this research is gained from the observation on students activity to get score on phsicomotoric aspect including the test to know the students study result on cognitive aspect. The research design used is pretest posttest control group design.Based on the result analysis on the data research by using t?óÔé¼ÔÇ£ test separated, is gained 2,447 tcount of cognitive score, 2,243 tcount of tcount phsicomotoric with ttabel for both is 2, 021 on 5% significancy level. So, tcount > ttabel and Ho is denied. Average increase on cognitive study result on students grade IV of SDN 6 Suwawal Jepara before given the treatment is 50% and after the treatment is 100%. The average psicomotoric study result is 80%. So, it can be concluded that there is effects on learning sending and greeting and exercises toward the students study result on the theme what a beautiful country i have grade IV students of SDN 6 Suwawal. The recomendation that the researcher can give is that the use of sending greeting and exercises method should be applied on small class only or class with not more than 25 students in it because it is needed relatively a lot of time in the application of this kind of research method.
STUDENTS’ ABILITY TO IDENTIFY PROMINENCE PLACEMENT IN AUDIOBOOK Sari, Dian Ratna; Susilawati, Endang; Rosnija, Eni
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 7, No 3 (2018): Maret 2018
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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AbstractThis study aims to describe English Language Study Program students? ability in identifying prominence placement in audiobook. The subject of the research was Semester 5 students of English Language Education Study Program Teacher Training and Education Faculty Tanjungpura University Pontianak in academic year 2016/2017 that had taken requisite subjects related to English listening subjects. The researcher conducted a descriptive research on students? level of ability in identifying prominence placement in audiobook. A listening test to identify three circumstances governing prominence placement (which are New Information, Emphatic Stress, and Contrastive Stress) and an interview were conducted as activities of data collecting. The research findings showed that on average, the students were at very poor level in identifying prominence placement in audiobook with the average score of 49.09. Narrowing down to the ability to identify each circumstance governing prominence placement, the students were found to be on very poor level of identifying New Information circumstance. They were found to be on poor level of identifying Emphatic Stress circumstance. For identifying Contrastive Stress circumstance, they were also found to be on poor level. Based on the supporting data, it was assumed that the students? level of ability in identifying prominence placement in audiobook was influenced by their unfamiliarity with prominence and their lack of practice in identifying prominence. Keywords: Students? Ability, Identify, Prominence Placement, Audiobook