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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati ELTE Journal (English Languange Teaching and Education) Prosiding Universitas PGRI Palembang Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JTSL (Jurnal Tanah dan Sumberdaya Lahan) Esteem Journal of English Study Programme
Etty Pratiwi
Research Institute of Agricultural Biotechnology and Genetic Resources, Jalan Tentara Pelajar No. 3A, Cimanggu-Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Engineering Environmental Science Social Sciences

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Insecticidal Activity of Extracellular Protein of PRU8 Isolate against Tenebrio molitor Larvae Alina Akhdiya; Etty Pratiwi; I Made Samudra
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 | DOI: 10.24002/biota.v14i2.2684

Abstract

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
The Influence of Mnemonic Pictures and Students’ Attitudes toward the Students’ Writing Achievement of the Eighth Grade Students of SMP PGRI 1 Palembang Etty Pratiwi
ELTE Journal (English Languange Teaching and Education) Vol 2, No 1 (2014): ELTE Journal (English Languange Teaching and Education)
Publisher : 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
The Influence of Mnemonic Pictures and Attitudes toward the Students’ Writing Achievement of the Eighth Grade Students of SMP PGRI 1 Palembang Etty Pratiwi
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 12
Publisher : Jurnal Dosen Universitas PGRI Palembang

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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
THE INFLUNCES OF USING PICTURES SERIES IN STUDENT’S WRITING COMPOSITION TO THE EIGHTH GRADE STUDENTS OF SMP PGRI 1 PALEMBANG Etty Pratiwi
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
Karakteristik Ph Dan Suhu Dalam Proses Pembuatan Biogas Dari Substrat Limbah Rumah Makan, Limbah Cair Tahu Dan Kotoran Sapi Violla Dwivannie; Aryo Sasmita; Etty Pratiwi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Restaurant waste is biomass which has the potential to be developed into renewable energy in the form of biogas. The choice of restaurant waste is the main substrate for biogas production because the waste contains many elements of organic material which have not been widely used, especially for biogas production. Besides of restaurant waste, tofu liquid waste and cow dung are very potential to be used as additional substrates in the biogas formation process. This research aims to study the effect of variations in the composition of organic waste (restaurant waste, tofu wastewater and cow dung) on the quality of methane gas in biogas production. The research was conducted using an 30-liter anaerobic biodigester with a working volume of 22.5 liters. The research variables are substrate variations, namely 100% restaurant waste, 50% restaurant waste : 50% tofu liquid waste, and 93.75% restaurant waste : 6.25% cow dungThe results showed that the initial pH value of the three biodigesters ranged from 6.63 to 6.7 where the pH range was still within the ideal pH value in making biogas, which ranged from 6.6 to 7.6. While the temperature of each reactor in this study has fluctuated, ie 28 ° C - 29.7 ° C, in this temperature range biogas can still be developed. Keywords : Anaerobic process, biogas, restaurant waste, tofu liquid waste, cow dung
EFFECTIVE READING STRATEGIES FOR READING SKILLS Dewi Kartika Sari; Etty Pratiwi; Ana Thereana
Esteem Journal of English Education Study Programme Vol. 2 No. 2 (2019): Esteem Journal of English education Study Programme
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/esteem.v2i2.2429

Abstract

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.
VIABILITAS DAN AKTIVITAS ENZIM FOSFATASE SERTA PRODUKSI ASAM ORGANIK BAKTERI PELARUT FOSFAT PADA BEBERAPA SUHU SIMPAN Ajeng Widakusuma Dewanti; Etty Pratiwi; Yulia Nuraini
Jurnal Tanah dan Sumberdaya Lahan Vol. 3 No. 1 (2016)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas 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 USE OF MOBILE-ASSISTED LANGUAGE LEARNING (MALL) TECHNOLOGY IN ENGLISH CLASS Sasti Kartika; Aswadi Jaya; Hermansyah Hermansyah; Etty Pratiwi; Dewi Kartikasari
Esteem Journal of English Education Study Programme Vol. 7 No. 1 (2024): Esteem Journal of English Education Study Programme
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/esteem.v7i1.12678

Abstract

The purpose of this research is to find out the Use of Mobile Assisted Language Learning (MALL) Technology in English classes. The problem of this research is how was the use of mobile-assisted language learning (MALL) technology in English classes. The method in this study is a qualitative method. Research techniques are carried out by means of observation, interviews, and documentation. Interviews were conducted with English teachers who teach in class VII.I. This research was conducted at SMP Negeri 2 Penukal. The results of the study stated that based on the results of the documentation obtained from the data of students who had carried out WhatsApp group activities in semester 1, and data on students who are doing WhatsApp groups in semester 2 when viewed from the results, self-management and students' motivation are very strong in conducting WhatsApp group learning, students are very active in WhatsApp groups activities, because this was done during a pandemic, until now finally the use of cellular technology is still being implemented at SMP Negeri 2 Penukal. Thus the use of mobile technology is very important to be applied in schools as a medium of distance learning. Makes it easier for teachers to give assignments to students, and control students to be more active in learning.
Co-Authors Ajeng Widakusuma Dewanti ALINA AKHDIYA ANA THEREANA Aryo Sasmita Aswadi Jaya Dewi Kartika Sari Dewi Kartikasari Hermansyah Hermansyah I MADE SAMUDRA Sasti Kartika Violla Dwivannie Yulia Nuraini