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All Journal HAYATI Journal of Biosciences JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Jurnal Pendidikan Matematika dan IPA Jurnal Sains Dasar Jurnal Matematika & Sains Journal of Degraded and Mining Lands Management Jurnal Pendidikan Biologi Indonesia JPS Unimus Jurnal Inovasi Pendidikan IPA Jurnal Edukasi Matematika dan Sains Indonesian Journal of Science and Technology Jurnal Tadris Kimiya Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Jurnal Ilmiah Peuradeun Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Warta Penelitian Perhubungan Faletehan Health Journal Molekul: Jurnal Ilmiah Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Chemistry Education Practice Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Borobudur Journal Evaluation in Education (JEE) Jurnal Keperawatan 'Aisyiyah Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Molekul: Jurnal Ilmiah Kimia Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia IJOBI Holistik Jurnal Kesehatan Jurnal Pendidikan MIPA Indonesian Journal of Science and Education Warta Penelitian Perhubungan IJIS Edu : Indonesian Journal of Integrated Science Education
SRI ATUN
Universitas Negeri Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Other

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Stenofilol B dan Hopeafenol, Dua Oligomer Stilbenoid dari Kayu Batang Sri Atun; Sjamsul Arifin Achmad; Euis Holisotan Hakim; Yana Maolana Syah; Emilio L Ghisalberti; Lia Dewi Juliawaty
Jurnal Matematika & Sains Vol 8, No 1 (2003)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Two oligostilbenoid, namely stenophyllol B (1) and hopeaphenol (2) had been isolated from the stem bark of Vatica umbonata Burck (Dipterocarpaceae). The structure of both compounds were elucidated based on spectroscopic data. Both compounds exhibited strong toxicity againts murine leucaemia cell P-388 with IC50 : 8,5 μg/ml and 2,9 μg/ml, respectively.
STUDENTS’ CURIOSITY PROFILE IN EXCRETION SYSTEM TOPIC TAUGHT USING AUTHENTIC INQUIRY LEARNING Mouromadhoni, Kasyfi Rifqi; Atun, Sri; Nurohman, Sabar
JPBI (Jurnal Pendidikan Biologi Indonesia) Vol 5, No 3 (2019): November
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jpbi.v5i3.7689

Abstract

Curiosity is a basic important aspect encourages students in finding various information which, in turn, aid them to encompass the concept learnt. This descriptive research aimed at elaborating the curiosity profile of junior high school students in science learning, particularly in excretion system topic who were taught using the authentic inquiry learning. This research was conducted at SMP Negeri 14 Yogyakarta with 32 of eight graders as the subjects. The instrument used was curiosity response questionnaire. The data obtained was analyzed using percentage. The results showed that the average of curiosity achievement obtained was categorized as strong (75%). However, the comparison of implementations between the authentic inquiry learning and the other learning models are needed to get more comprehensive information.
The Effect of Science Technology Society (STS) Learning On Students’ Science Process Skills Dewi, Ni Putu Laksmi Cintya; Atun, Sri
Jurnal Ilmiah Peuradeun Vol 7 No 1 (2019): Jurnal Ilmiah Peuradeun
Publisher : SCAD Independent

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.907 KB) | DOI: 10.26811/peuradeun.v7i1.288

Abstract

This study aims to determine the effect of the application of Science Technology Society (STS) learning in high school students of class XI IPA. This research is a quasi-experimental research using posttest only design. The sample used is 64 students from Senior High School in Bantul district, Yogyakarta. Samples were obtained using purposive random sampling. Data were collected using posttest value to determine the effect of Science Technology Society (STS) learning and using Student Worksheet to know student ability. The data were analyzed by using ANOVA. The results showed that Science Technology Society (STS) study had significant effect, with a significance value 0,043 (p<0,05). Based on these studies, it can be concluded that the learning Science Technology Society (STS) influential in students’ science process skills.
Evaluasi Perilaku (Consumer Behavior) Pengguna Dan Operator Angkutan Umum Perkotaan Atun, Sri
Warta Penelitian Perhubungan Vol. 22 No. 12 (2010): Warta Penelitian Perhubungan
Publisher : Sekretariat Badan Penelitian dan Pengembangan Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3442.929 KB) | DOI: 10.25104/warlit.v22i12.1159

Abstract

In the context of public transport and urban areas, the main problem faced is traffic congestion. Ihismn be mused m; many things, such as traffic discipline is relatively low, not optimal role has not beenimplemented angktuan general and mass transit in urban areas optimally. Conduct public Searaurban transport users have not shown good discipline. On the other side of the urban public transportavailable was impressed not planned on a needs basis. Type of public transportation in some areascontinue to grow with the reason for fleet renewal, while tlze aging of the existing jl.&t is still operating.Condud public transport operators in urban areas seem to find profit without regard to rules that should be applied.
Integrasi Angkutan Keretaapi Dengan Bus Damri Di Stasiun Tugu Yogyakarta Lestari, Sri; Atun, Sri
Warta Penelitian Perhubungan Vol. 22 No. 7 (2010): Warta Penelitian Perhubungan
Publisher : Sekretariat Badan Penelitian dan Pengembangan Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7100.148 KB) | DOI: 10.25104/warlit.v22i7.1119

Abstract

Yogi;akarta cihj is one of the tourist cihj and a universihj to11m and a cih; full of culture that hard tobreak, other than within the cih;, as well as tourists from abroad and students wlw want to registersclwols that migrate out of population yogi;aknrtn yogyaknrta with routine e7.1en; Idul Fitri, flockflocked to visit nyeknr fogjaknrtn . One of tile 11zo1ks arf' quite populnr and beazme tlze people's choiceis rail, because beside the railwm; is a mode of mass transit modes of transportation also has someadvantages safe, comfortable, safe and timely when compared with other transportation modes.Yogi;aknrta Tugu station to sen1e several hjpes of rail freight business executives and train withpassengers on auerage each dm; to reach 6.5 t/wusand passengers, especially on big dm;s and weeksand, with the number of passengers, the passengers off the train modes require continued until hereached the final destination, especially passengers wlw headed jogja town with a bus transportationmodes, especially road Oamri. One of tlze expected proficienci; le7.1el in these sulusi overcome theMunicipal Government of Yogi;aknrtn (Yogi;aknrtn Transportation AgenCIJ) with PT. Rnilwm;s andPerum Oamri cooperation provided means of road transport continued until he reached the finaldestination of the integration of rail with bus transportation Oamri.
IDENTIFICATION AND BIOLOGICAL ACTIVITY TEST SOME ISOLATED COMPOUNDS FROM STEM BARK OF MELINJO (GNETUM GNEMON) Atun, Sri; Arianingrum, Retno; Masatake, Niwa
Jurnal Sains Dasar Vol 1, No 1 (2012): April 2012
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (122.897 KB) | DOI: 10.21831/jsd.v1i1.2350

Abstract

Isolation and structure elucidation of two compounds, namely resveratrol (1), and 3- methoxyresveratrol (2) from stem bark of Melinjo (Gnetum gnemon) had been done. The isolation of those compounds was carried out by chromatographyc method and structure elucidation was performed by interpretation of spectroscopic data, including UV, IR,  1H and 13C NMR 1D and 2D, and FABMS. The result of this study showed that activity each compounds as radical hydroxyl scavenger of resveratrol (1), and 3-methoxyresveratrol (2), with an  IC50 45,17 and 60,12; g/ml respectively. Each compound showed significant activity as UV-B protection. Activity test as UV-B protection showed that resveratrol and methoxyresveratrol have maximum protections (SPF 8,03 and 12,34 respectively), each compounds on 50 g/ml. Key word : melinjo; Gnetum gnemon; natural antioxidant; UV-B protection
Activity of Oligoresveratrols from Stem Bark of Hopea mengarawan (Dipterocarpaceae) as Hydroxyl Radical Scavenger SRI ATUN
HAYATI Journal of Biosciences Vol. 13 No. 2 (2006): June 2006
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.076 KB) | DOI: 10.4308/hjb.13.2.65

Abstract

Four oligoresveratrols ranging from dimer to tetramer, isolated from stem bark of Hopea mengarawan (Dipterocarpaceae) plants were tested for their activity as hydroxyl radical scavenger. The activity of these compounds was evaluated against the 2-deoxyribose degradation induced by the hydroxyl radical generated via a Fenton-type reaction. Result showed that balanocarpol, heimiol A, vaticanol G, and vaticanol B had IC50 3.83; 15.44; 2.01; and 4.71 uM, respectively. These results suggest that oligoresveratrols from stem bark of H. mengarawan maybe useful as potential sources of natural antioxidants. Key words: Oligoresveratrol, Hopea mengarawan
Students’ curiosity profile in excretion system topic taught using authentic inquiry learning Kasyfi Rifqi Mouromadhoni; Sri Atun; Sabar Nurohman
JPBI (Jurnal Pendidikan Biologi Indonesia) Vol. 5 No. 3 (2019): NOVEMBER
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jpbi.v5i3.7689

Abstract

Curiosity is a basic important aspect encourages students in finding various information which, in turn, aid them to encompass the concept learnt. This descriptive research aimed at elaborating the curiosity profile of junior high school students in science learning, particularly in excretion system topic who were taught using the authentic inquiry learning. This research was conducted at SMP Negeri 14 Yogyakarta with 32 of eight graders as the subjects. The instrument used was curiosity response questionnaire. The data obtained was analyzed using percentage. The results showed that the average of curiosity achievement obtained was categorized as strong (75%). However, the comparison of implementations between the authentic inquiry learning and the other learning models are needed to get more comprehensive information.
THE ANTIBACTERIAL ACTIVITY OF CURCUMA XANTHORRHIZA EXTRACT AGAINST ESCHERICHIA COLI ATCC 11229 AND STAPHYLOCOCCUS AUREUS ATCC 25923 Nur’Aini Purnamaningsih; Hadibah Kalor; Sri Atun
Jurnal Penelitian Saintek Vol 22, No 2: Oktober 2017
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.536 KB) | DOI: 10.21831/jps.v22i2.17122

Abstract

The objective of this study were determining the antibacterial activity of Curcuma xanthorrhiza extract with various concentrations of  0,5 ppm, 5 ppm, 50 ppm, 250 ppm, and 500 ppm, and determining the effective concentrations of Curcuma extract antibacterial activity against Escherichia coli ATCC 11229 dan Staphylococcus aureus ATCC 25923. The results showed that the antibacterial activity of Curcuma xanthorrhiza extract with various concentrations of 0,5 ppm, 5 ppm, 50 ppm, 250 ppm, and 500 ppm showed antibacterial activity against Escherichia coli ATCC 11229 and Staphylococcus aureus ATCC 25923. The concentrations of Curcuma xanthorrhiza extract of 500 ppm effective against Escherichia coli ATCC 11229 which the diameter of inhibition by 10,37 mm and Staphylococcus aureus ATCC 25923  by 8,44 mm.
SYNTHESIS GLYCEROL STEARATE OF STEARIC ACID WITH GLYCEROL BY PRODUCT OF BIODISEL FROM USED COOKING OIL Ika Rosdiani; Sri Atun
Jurnal Penelitian Saintek Vol 20, No 1: April 2015
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1386.725 KB) | DOI: 10.21831/jps.v20i1.5605

Abstract

The aim of this research is to synthesis glycerol stearate compound from stearic acid with glycerol by product of biodiesel from used cooking oil, and to determine of product using IR and GC-MS spectroscopy. Method of the research was esterifi cation of glycerol and stearic acid with concentrated HCl as catalyst, by refl uct at 120-160 0C for 8 hours. The result was recrystallized by n hexan. The compound characterized by using IR spectroscopy and GC-MS spectroscopy. The compound has solid form, white to yellowish colour and has 58- 59 0C melting point value with rendement 80.53%. IR spectrum showed the presence C=O carbonil, C-O ester, -OH and C-H aliphatic group. The result of GC-MS analysis showed the compound which have synthesized has similarities with glycerol 2-monostearate with similarity index (SI) of 88% with a purity of 98,94%.
Co-Authors Abas Susilo Ade Sofiana Suryani Alfin, Riandi Althaaf, Nabila Tsabita Alya Rizkita Irwan Aminatun, Tien Ana Siti Nurjanah Anak Agung Gede Sugianthara Anisa Nur Khakim Anna Rakhmawati Anugrah Anang Respati Apriani, Nuni Arifudin Idrus Arthamena, Vegha Dwi Artina Diniaty Artina Diniaty, Artina Astuti Lestari Ayubi, Mizzan Azeeza, Sabira Nurul Azizah, Fidasari Nur Bian Ihda An Naila Darmono Dessy Kurniasari Dewi ANGGRAENI Dewi Anggraini Emilio L Ghisalberti Erlina Erlina Euis Holisotan Hakim Fajar Naqsyahbandi Fapriyan Wijoyo Mulyopratikno Fauji Agusta Ghabby Maharani P Habibatul Unayah Hadibah Kalor Heru Kuswanto Hurrahman, Mifta Ika Rosdiani Indah Puspita Sari, Mega Insih Wilujeng Jumaiyah, Wati Kamari, Azlan Kasyfi Rifqi Mouromadhoni Laila, Erni Latifah Kurnia Devani Lia Dewi Juliawaty Luthfi Fitri Frindryani Luthfia Ulva Irmita Maemonah, Maemonah Mamluaturrahmatika, Annisa Marpaung, Aisyatur Radhwa Masatake Niwa Mouromadhoni, Kasyfi Rifqi muhamad arif nur rokhman Muhamad Sarip Muhammad Ikhsan Muhammad Ikhsan Mukti Syarifah Mulyopratikno, Fapriyan Wijoyo Nadiya Fitri Anisa Nafakoti, Nadia Naffa Afkarina Izzata Dini Naqsyahbandi, Fajar Nelly Fadliyani Ni Putu Laksmi Cintya Dewi, Ni Putu Laksmi Cintya Nida Qurbaniah Juhara Niwa Masatake Nova Irawati Simatupang Nova Irawati Simatupang, Nova Irawati Nurfina Aznam Oky Pamungkas Pamungkas, Oky Patar Ariyanto Sitorus Purnamaningsih, Nur Aini Rahman, Nanang Rania Nur Farida Ratri Panggih Pangastuti Rayasari, Fitrian Retno Arianingrum RISHA KURNIA DWI HARTANTI Romadhoni, Siti Dzakiya Royani, Elmi Rusdiman Buhera S. Senam Sa'adah, Siti Imroatus Sabar Nurohman Sabar Nurohman Sangal, Aditi Sari, Winda Putri Permata Satriya, M. Agung Senam Senam Simbolon, Doly siswanti ningsih Siti Aisyah SITI NUR'AINI Sjamsul Arifin Achmad Sogen, Jasintah Tagan Sri Lestari Sujangka, Arsyad Suryadi Prasetyo Susila Kristianingrum Suyanta Suyanta Tia Rachmatika Wahyuni Tonapa, Nely Wijoyo Mulyopratikno, Fapriyan Yana Maolana Syah Yani Sofiani Yasaroh, Sabila Yunitri, Ninik