Etty Pratiwi, Etty
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian, Jl. Tentara Pelajar 3A, Bogor 16111

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The Influence of Mnemonic Pictures and Students’ Attitudes toward the Students’ Writing Achievement of the Eighth Grade Students of SMP PGRI 1 Palembang Pratiwi, Etty
ELTE Journal (English Languange Teaching and Education) Vol 2, No 1 (2014): ELTE Journal February Edition
Publisher : Program studi Magister Pendididkan Bahasa Inggris Pascasarjana Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/elte.v0i0.74

Abstract

ABSTRACT The research investigated the Influence of Mnemonic Pictures and Students’ Attitude toward the Students’ Writing Achievement of the Eighth Grade Students of SMP PGRI 1 Palembang. The problems of the study were found that: (1) there was a significant difference in average of writing achievement between the students who were in positive attitude after being taught using mnemonic pictures strategy and those who were taught using conventional strategy, (2) there was a significant difference in average of writing achievement between the students who were in negative attitude after being taught using mnemonic pictures strategy and those who were taught using conventional strategy, (3) there was a significant difference in average of writing achievement between the students who were in positive and negative attitude after being taught using mnemonic pictures strategy, (4) there was a significant difference in average of writing achievement between the students who were in positive and negative attitude after being taught using conventional strategy, (5) there was an interaction effect of mnemonic pictures strategy and attitude on the students’ writing achievement. The population of the study was the eighth grade students of SMP PGRI Palembang in academic year of 2013/2014 consisting 342 students. The 96 students were taken as a sample by using two stage random sampling. To collect the data the writer used questionnaire to get the students’ attitudes and writing test to get the information about students’ writing achievement in descriptive paragraph. In carrying out the research, the writer used a factorial design. In analyzing the data, the writer used t-test and two ways ANOVA. Keywords: Mnemonic Pictures, Attitude, and Writing Achievement
VIABILITAS DAN AKTIVITAS ENZIM FOSFATASE SERTA PRODUKSI ASAM ORGANIK BAKTERI PELARUT FOSFAT PADA BEBERAPA SUHU SIMPAN Dewanti, Ajeng Widakusuma; Pratiwi, Etty; Nuraini, Yulia
Jurnal Tanah dan Sumberdaya Lahan Vol 3, No 1 (2016)
Publisher : University of Brawijaya

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Abstract

Phosphate is the second essential chemical element for plants. However, it mostly presents in insoluble form. Using biofertilizers containing phosphate-solubilizing bacteria can increase phosphate solubilization. However, it is often ineffective due to the high temperature of the storage warehouse so the viability and enzyme activity of the microbes can decrease. The aims of this study were to determine the optimum and maximum temperature of phosphate-solubilizing bacteria’s viability, knowing the effect of storage temperature on the bacteria population and halozone of phosphate-solubilizing bacteria, knowing phosphatase activity of phosphate-solubilizing bacteria which were incubated at high temperatures, and knowing the organic acid production of phosphate-solubilizing bacteria which incubated at high temperature. The results showed that 37˚C was the optimum temperature of JBNO6, KT6D, KT7D and EPS5 strains and they could hold the high temperature of 58˚C (thermophilic). The ability of all strains in dissolving the P-insoluble decreased at high temperatures. However, the enzyme activity would go back again at room temperature (reversible). The acid phosphatase value of all phosphate-solubilizing bacteria strains was higher than the alkaline phosphatase value in the entire storage temperature. At high temperatures, KT6D was capable of producing oxalic acid and KT7D was able to produce acetic acid. EPS5 was the highest in the ability of phosphate solubilizing, the ability to produce the phosphatase enzyme and the bacteria population compared with JBNO6, KT6D and KT7D.
THE INFLUNCES OF USING PICTURES SERIES IN STUDENT’S WRITING COMPOSITION TO THE EIGHTH GRADE STUDENTS OF SMP PGRI 1 PALEMBANG Pratiwi, Etty
Jurnal Dosen Universitas PGRI Palembang Prosding PPs tanggal 26 November 2016
Publisher : Jurnal Dosen Universitas PGRI Palembang

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Abstract

Abstract: this research investigated the influence of using pictures series in student’s writing composition  to the eighth grade students of SMP PGRI 1 Palembang. The objective of this study was to identify whether or not by using pictures series can improve the students ‘ writing composition. This study was conducted in experimental research to 82 students from the eighth grade students of SMP PGRI 1 Palembang of the academic year of 2016-2017. This study could be concluded that pictures series strategy gave a significant improvement for the students’ writing composition than the students’ writing composition by using conventional strategy to the eighth grade students of SMP PGRI 1 Palembang. Key Words:  Pictures stories, Writing Composition
The Influence of Mnemonic Pictures and Attitudes toward the Students’ Writing Achievement of the Eighth Grade Students of SMP PGRI 1 Palembang Pratiwi, Etty
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 12
Publisher : Jurnal Dosen Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.631 KB)

Abstract

ABSTRACT This research investigated the influence of Mnemonic Pictures and attitudes toward the students’ writing achievement of the Eighth Grade Students of SMP PGRI 1 Palembang. The problems of this study were to identify whether or not (1) there is a significant difference in average of writing achievement between the students who are in positive attitude after being taught using mnemonic pictures strategy and those who are taught using conventional strategy;(2) there is a significant difference in average of writing achievement between the students who are in negative attitude after taught using mnemonic pictures strategy and those who are taught using conventional strategy; (3) there is a significant difference in average of writing achievement between the students who are in positive and negative attitude after being taught using mnemonic pictures strategy and those who are taught using conventional strategy;and (4) there is a significant interaction effect of mnemonic pictures strategy and attitude on the students’ writing achievement. This study was conducted in experimental research to 96 students of SMP PGRI 1 Palembang in the first semester of the academic year of 2013-2014. This study could be concluded that mnemonic pictures strategy and attitudes gave a significant influence for the students’ writing achievement since there was a significant improvement in average of the students’ writing achievement before and after being taught using mnemonic pictures strategy. Keywords: mnemonic pictures, attitudes, and writing achievement
PROTEIN TOKSININSEKTISIDAL DARI BAKTERI PATOGEN SERANGGA Photorhabdus luminescens HJ Akhdiya, Alina; Pratiwi, Etty; Samudra, I Made
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.996 KB) | DOI: 10.14203/beritabiologi.v8i6.828

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Photorhabdus luminescens HJ is an entomopathogenic bacterium that has a high toxicity against Tenebrio molitor larvae.Toxicity assay of crude extra cellular protein precipitated using ammonium sulphate showed that the highest toxin activity was found in 70 % saturation. Purification of the toxin using Hi Prep 16/60 Sephacryl S-200 HR column exhibited one fraction of toxic protein and three fractions of non-toxic protein. Mortality of T. molitor larvae treated with 19.2 nanogram of toxic fraction was up to 80%. Denatured protein analysis using sodium dodecyl sulphate-polyacrylamide gel electrophoresis revealed that the toxic fraction was composed of three proteins, which were 19.5, 42, and 66 kDa respectively. Based on toxin activity bioassay, this toxin type was an injectable toxin and presumably classified as Mcf toxin.
USING SONG TO ENCHANCE LEARNING IN ENGLISH THE CLASSROOM Pratiwi, Etty
PROSIDING SEMINAR NASIONAL PROGRAM PASCASARJANA UNIVERSITAS PGRI PALEMBANG 2018: SEMINAR NASIONAL PENDIDIKAN 5 MEI 2018
Publisher : PROSIDING SEMINAR NASIONAL PROGRAM PASCASARJANA UNIVERSITAS PGRI PALEMBANG

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Abstract

Abstract— Learning English through songs is one of the best method that the students focus on the lesson better. Because in a song has the variety new words and phrases with many different themes, so the students can learn some items of vocabulary, rhym of language, and grammatical structures that relating to any topic.The fact that English songs for the students are often easy and simple topic that they like most to learn and the students will learn song by hearing it many times, maybe memorization occurs via repetition. Using songs in teaching English is the great way to teach language for students who can not understand fully all the lyric but they still listen to music and sing follow their teacher or music because they are very interesting. However, the teacher should not forget the main purpose that using songs in teaching English is only the tool in order to aim the students in English classroom. In short, I hope that using songs will be effective way for students to enchance learning English and for teachers should choose suitable songs and create various activities to help students learn actively. Keywords— song, enchance learning Abstrak— Belajar Bahasa Inggris melalui lagu adalah salah satu metode terbaik agar siswa fokus pada pelajaran yang lebih baik. Karena dalam sebuah lagu terdapat variasi kata-kata dan frasa baru dengan banyak tema yang berbeda, sehingga para siswa dapat mempelajari beberapa item kosa kata, rhym bahasa, dan struktur gramatikal yang berkaitan dengan topik apa pun. Fakta bahwa lagu-lagu berbahasa Inggris untuk para siswa seringkali mudah dan topik sederhana yang paling mereka sukai untuk dipelajari dan siswa akan belajar lagu dengan mendengarnya berkali-kali, mungkin hafalan terjadi melalui pengulangan. Menggunakan lagu dalam mengajar bahasa Inggris adalah cara terbaik untuk mengajarkan bahasa bagi siswa yang tidak dapat memahami sepenuhnya semua lirik tetapi mereka masih mendengarkan musik dan bernyanyi mengikuti guru atau musik mereka karena mereka sangat menarik. Namun, guru tidak boleh lupa tujuan utama bahwa menggunakan lagu dalam pengajaran bahasa Inggris hanyalah alat untuk membidik siswa di kelas bahasa Inggris. Singkatnya, saya berharap bahwa menggunakan lagu akan menjadi cara yang efektif bagi siswa untuk meningkatkan belajar bahasa Inggris dan untuk guru harus memilih lagu yang sesuai dan membuat berbagai kegiatan untuk membantu siswa belajar secara aktif.. Kata Kunci— lagu, belajar enchance
EFFECTIVE READING STRATEGIES FOR READING SKILLS Sari, Dewi Kartika; Pratiwi, Etty; Thereana, Ana
ESTEEM : Journal of English Study Programme Vol 1, No 2 (2018): ESTEEM JOURNAL OF ENGLISH STUDY PROGRAMME
Publisher : ESTEEM : Journal of English Study Programme

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.648 KB) | DOI: 10.31851/esteem.v1i2.2429

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The researchers had found that learning reading strategies is a key element in developing student comprehension. However, many teachers lack a solid foundation for teaching these reading comprehension strategies. Therefore, teachers need to be prepared on how to design effective reading comprehension strategies and how to teach these strategies to their students. Therefore this study aims to study the effective reading strategies in order to improve reading skills in language classes. The study is an action research applied to a number of 15 students in an intermediate level integrated skills course. The main question of the study is “Would reading strategies help my students’ reading comprehension studies?”. The result od the study indicate that the students had an improvement to a great extend have been tutored about the reading strategies.
Insecticidal Activity of Extracellular Protein of PRU8 Isolate against Tenebrio molitor Larvae Akhdiya, Alina; Pratiwi, Etty; Samudra, I Made
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 2 (2009): June 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.506 KB) | DOI: 10.24002/biota.v14i2.2684

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Sel ataupun supernatan bebas sel dari kultur cair isolat bakteri entomopatogen PRU8 memiliki toksisitas tinggi terhadap larva Tenebrio molitor. Bioesei protein ekstrasel kasar hasil pengendapan amonium sulfat menunjukkan bahwa toksisitas tertinggi terdapat pada protein yang diendapkan pada kejenuhan amonium sulfat 70%. Pemurnian protein menggunakan kolom Hi Prep 16/60 Sephacryl S-200 HR menghasilkan satu fraksi protein toksin. Mortalitas larva uji yang disuntik dengan 19,2 nanogram toksin murni mencapai 71%. Uji toksisitas menggunakan toksin murni menunjukkan bahwa toksin tersebut termasuk kelompok toksin tipe injeksi. Berdasarkan analisa SDS-PAGE toksin tersebut tersusun atas dua protein dengan berat molekul 116,25 dan 66,24 kDa