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All Journal International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI Journal of Education and Learning (EduLearn) Abdimas Jurnal Inovasi Pendidikan Kimia Jurnal Penelitian Pendidikan Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Sainteknol : Jurnal Sains dan Teknologi Jurnal Karya Pendidikan Matematika Jurnal Daya Matematis Indonesian Journal of Chemical Science Indonesian Journal of Chemistry ABDIMAS SILIWANGI JISIP: Jurnal Ilmu Sosial dan Pendidikan Jurnal Pendidikan Jurnal Pengabdian Masyarakat Khatulistiwa Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Cokroaminoto Journal of Primary Education Jurnal Bina Desa Bookchapter Alam Universitas Negeri Semarang Bulletin of Chemical Reaction Engineering & Catalysis Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI International Journal of Active Learning
Sri Kadarwati
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Religion Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences Other

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PREPARASI, KARAKTERISASI, DAN UJI AKTIVITAS KATALIS NI-MO/ZEOLIT ALAM DALAM PROSES CATALYTIC CRACKING JELANTAH MENJADI BIOGASOLINE Rifqi, Khaerur; Kadarwati, Sri; Wahyuni, Sri
Indonesian Journal of Chemical Science Vol 1 No 1 (2012)
Publisher : Indonesian Journal of Chemical Science

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Abstract

KEEFEKTIFAN MODEL STUDENT TEAM ACHIEVEMENT DIVISION (STAD) DAN E-LEARNING PADA MATERI OPERASI PENJUMLAHAN DAN PENGURANGAN PECAHAN DI SEKOLAH DASAR Kadarwati, Sri; Astutik, Kasni; Prayitno, Edi
Jurnal Karya Pendidikan Matematika Vol 5, No 2 (2018): Jurnal Karya Pendidikan Matematika Volume 5 Nomor 2 Tahun 2018
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.819 KB) | DOI: 10.26714/jkpm.5.2.2018.121-125

Abstract

The low learning outcomes of Addition and Reduction of Fractions in class IV are partly due to: (1) a tedious learning process, (2) lack of use of ICT as a source and media of learning. To overcome this problem the research team developed student-centered learning through e-learning learning in the Student Team Achievement Division (STAD) model. This study is a true experiment using the Pre-Test Group Control Post Test Design. The population is Sambiroto 02 elementary school students as many as 75 students in the 2017/2018 school year. The E2 group with EAD learning using the STAD model reached the highest mean value of the three groups, amounting to 88.67, followed by the E1 group with STAD learning at 74.54 and the K group with expository learning at 63.10. Regression analysis showed a positive relationship between motivation and activity with learning outcomes in groups E1 and E2 so it can be concluded that the higher the student's motivation and activity score the higher the student's learning achievement in addition and subtraction operations in elementary schools.
IMPLEMENTASI STRATEGI THINK-TALK-WRITE (TTW) PADA PEMBELAJARAN MENULIS DAN PEMAHAMAN MATEMATIS Kadarwati, Sri; Sulistyaningsih, Nining
Jurnal Pendidikan Vol 10 No 2 (2009)
Publisher : LPPM Universitas Terbuka

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Abstract

This study examines whether students' ability in mathematical writing and understanding gained from teaching through "think talk write' strategy is better than students' ability gained from conventional one.; This study also examines students' ability in mathematical writing and understanding from gender aspects. Using quantitative design, data was taken through documentary study, questioner sheets and observation. Data was analyzed using two ways ANOVA. Result shows: a) the ability of students in mathematical writing and understanding gained from conventional one; b) the ability of female students is better tan male students; and c) Think Talk Write strategy can improve students' mathematival disposition ability.
UPAYA PENINGKATAN HASIL BELAJAR KIMIA FISIKA 5 DENGAN PENDEKATAN CHEMO-ENTREPRENEURSHIP MELALUI KEGIATAN LESSON STUDY Kadarwati, Sri; Saputro, Subiyanto Hadi; Priatmoko, Sigit
Jurnal Inovasi Pendidikan Kimia Vol 4, No 1 (2010): January 2010
Publisher : Universitas Negeri Semarang

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Abstract

Physical Chemistry 5 is a main and diffi cult course for students because of itsrelation to microsspic properties and abstract with the result that the visualization isnecessity. Therefore, the appealing learning that can manure the students’ creativenessand innovation and motivate students to be entrepreneurs is necessity. Such learning is alearning using chemo-entrepreneurship (CEP) approach. Lesson study activity is potentialin learning community and collaboration development effectively. Therefore, the learning ofPhysical Chemistry 5 using CEP approach through lesson study activity is necessity. Thisresearch was aimed to improve the students’ achievement on Physical Chemistry 5 lectureusing CEP approach through lesson study activity. This research was conducted by quasiexperiment method involving students on seventh semester of Chemistry Programme assubject. Lesson study activity was conducted by three stages i.e. planning, doing, andrefl ecting. The instrument of research included the achievement test, observation sheets,and questionnaire sheets. The results showed that the achievement of experimental groupwas higher than of controlled group. The learning completeness of experimental group washigher than of controlled group. It was shown that this learning can improve students’ life skill. Key words: achievement, chemo-entrepreneurship, lesson study
PENGARUH MODEL PEMBELAJARAN AKTIF DENGAN PERMAINAN BOLA GULING TERHADAP HASIL BELAJAR SISWA SMA Nugrahantia, Ayu; Soeprodio, Soeprodio; Kadarwati, Sri
Jurnal Inovasi Pendidikan Kimia Vol 5, No 2 (2011): July 2011
Publisher : Universitas Negeri Semarang

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Abstract

This study is aimed to investigate the influence of active learning with college ball game and magnitude of impact on student learning outcomes. A preliminary study conducted in SMA 11 Semarang indicated that student's learning outcomes on buffer solution and hydrolysis topic are low. This is indicated by the value of daily tests or the last five years that's unable to reach a predetermined value, which is 65. A preliminary study also showed that the level of understanding and interesting in student's learning is still lacking. This problem requires an appropriate teaming model to attract the attention of students in learning. Therefore, the active learning model with a college ball game was applied, and then impact on student learning outcome was studied. The population in this study was students of class XI IPA of SMA 11 Semarang on 200912010 academic year. Experimental design used is post-test only control group design and cluster random sampling methode. Based on the analysis of two average difference test is was obtained that the value tcatt (3.92)> ttabte (1.67). It can be concluded that there are differences in learning outcomes between the two groups. The results by test analysis biserial of correlation showed that (rb) (0.53)> SErb*1.96 (0.29). It can be concluded that the correlation between two variables is reliable. The results showed that active learning with college ball game contributes to student's learning outcomes with the contribution of 28. 28%.
PENINGKATAN KEMAMPUAN GURU-GURU KIMIA KABUPATEN KENDAL DALAM MENDESAIN PENELITIAN TINDAKAN KELAS Saptorini, Saptorini; Widodo, A Tri; Kadarwati, Sri
Jurnal Penelitian Pendidikan Vol 30, No 2 (2013)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpp.v30i2.5674

Abstract

The results of preliminary study showed that chemistry teachers in Kendal didn’t know how to design CAR, has not been able to integrate models, strategies, and approaches of learning to certain topics to design CAR, and find the time management difficult in CAR. Thus, it was needed to train them the basic skills to teach so they will be able to design and conduct a CAR that will give a direct impact on the quality instuction in the classroom. This activity was carried out in two main phases, namely seminar and workshop in stage I and mentoring of CAR preparation in stage II. The results of this activity indicated that CAR preparation training for chemistry teachers in Kendal was be able to improve chemistry teachers’ capability in developing CAR. However, an increase in teachers’ character as a figure, in addition to increasing the professionalism of teachers who simply boils down to the academic side is still needed. In addition, the school and the Education Department needs to provide more facilities for the implementation of CAR in school continue to increase the sustainaible quality of the learning process.
AKTIVITAS KATALIS CR/ZEOLIT ALAM PADA REAKSI KONVERSI MINYAK JELANTAH MENJADI BAHAN BAKAR CAIR Kadarwati, Sri; Susatyo, Eko Budi; Ekowati, Dhian
Sainteknol : Jurnal Sains dan Teknologi Vol 8, No 1 (2010): June 2010
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v8i1.331

Abstract

Telah dipelajari aktivitas katalis Cr/Zeolit alam pada reaksi konversi minyakjelantah menjadi bahan bakar cair. Penelitian ini meliputi preparasi katalis Cr/zeolitalam dengan metode impregnasi, karakterisasi katalis, dan uji aktivitas katalisCr/Zeolit alam dalam reaksi konversi minyak jelantah menjadi bahan bakar cair.Reaksi dilakukan secara kontinyu pada fasa gas. Pada penelitian ini dipelajaripengaruh laju alir hidrogen dan waktu reaksi terhadap konversi minyak jelantahmenjadi bahan bakar cair. Hasil karakterisasi keasaman padatan menunjukkanpeningkatan keasaman total katalis. Analisis kualitatif menunjukkan peningkatankristalinitas katalis Cr/zeolit alam dan adanya spesi oksida dalam katalis seperti CrO2dan Cr2O3. Aktivitas terbaik ditunjukkan oleh kinerja katalis Cr/Zeolit alam padavariasi laju alir 5 mL/menit dan waktu 45 menit dengan konversi 75,23%.Berdasarkan analisis spektroskopi massa, produk mengandung senyawa pentana yangmuncul pada waktu retensi ( tR ) 14,566.Kata kunci : Cr/zeolit alam, minyak jelantah, bahan bakar cair
SINTESIS BIODIESEL DARI MINYAK JELANTAH SEBAGAI SUMBER ENERGI ALTERNATIF SOLAR Wahyuni, Sri; Kadarwati, Sri; Latifah, Latifah
Sainteknol : Jurnal Sains dan Teknologi Vol 9, No 1 (2011): June 2011
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v9i1.5525

Abstract

Telah dilakukan penelitian untuk mensintesis biodiesel dari bahan baku jelantah. Biodiesel merupakan sumber energi alternatif yang potensial untuk mengganti bahan bakar solar dari minyak bumi. Jelantah sebagai bahan baku pembuatan biodiesel berasal dari minyak kelapa sawit yang telah dipergunakan untuk keperluan rumah tangga. Jelantah atau minyak kelapa sawit bekas bersifat renewable (dapat diperbaharui), adapun minyak bumi sebagai bahan baku solar bersifat nonrenewable. Penelitian ini menghasilkan biodiesel dengan sifat fisik sebagai berikut: Densitas 873,5, korosi lempeng tembaga 1, CCR 0,073%, kadar air 0,16%, viskositas 4,649, titik kabut 21, dan Flash point 174,5. Hasil ini menunjukkan bahwa kriteria biodiesel hampir memenuhi standart ASTM D 6751. Unjuk kerja biodiesel dalam mesin diesel dilakukan di Lab. Teknik Mesin UNNES. Biodiesel dicampur dengan solar dengan komposisi 10 % dan 20% dan kemudian dilakukan uji kinerjanya. Hasil uji menunjukkan bahwa biodiesel 10% dan 20% menghasilkan emisi gas buang yang lebih bersih dibanding solar murni dan waktu pembakaran yang lebih lama. Biodiesel 20 % lebih baik dibanding 10%.
Characterization and Performance Test of Palm Oil Based Bio-Fuel Produced Via Ni/Zeolite-Catalyzed Cracking Process Kadarwati, Sri; Wahyuni, Sri
International Journal of Renewable Energy Development Vol 4, No 1 (2015): February 2015
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.4.1.32-38

Abstract

Catalytic cracking process of palm oil into bio-fuel using Ni/zeolite catalysts (2-10% wt. Ni) at various reaction temperatures (400-500oC) in a flow-fixed bed reactor system has been carried out. Palm oil was pre-treated to produce methyl ester of palm oil as feedstock in the catalytic cracking reactions. The Ni/zeolite catalysts were prepared by wetness impregnation method using Ni(NO3)2.6H2O as the precursor. The products were collected and analysed using GC, GC-MS, and calorimeter. The effects of process temperatures and Ni content in Ni/zeolite have been studied. The results showed that Ni-2/zeolite could give a yield of 99.0% at 500oC but only produced gasoline fraction of 18.35%. The physical properties of bio-fuel produced in this condition in terms of density, viscosity, flash point, and specific gravity were less than but similar to commercial fuel. The results of performance test in a 4-strike engine showed that the mixture of commercial gasoline (petrol) and bio-fuel with a ratio of 9:1 gave similar performance to fossil-based gasoline with much lower CO and O2 emissions and more efficient combustion
Pemanfaatan Aplikasi Google dalam Pembelajaran Kolaboratif Nuswowati, Murbangun; Amalina, Nur Dina; Kadarwati, Sri; Harjito, Harjito; Susilaningsih, Endang
Rekayasa : Jurnal Penerapan Teknologi dan Pembelajaran Vol 17, No 1 (2019): July 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v17i1.21656

Abstract

Pembelajaran kolaboratif merupakan filsafat interaksi pembelajaran melalui kerjasama, maka hal ini dilakukan tidak hanya disekolah tetapi juga diluar sekolah, termasuk melalui perangkat internet. Pengabdian ini bertujuan untuk mengetahui pengaruh model pembelajaran kolaboratif berbasis internet dengan menggunakan aplikasi google terhadap kemampuan guru dalam menyusun dokumen kurikulum. Bentuk pengabdian ini adalah quasi experiment (eksperimen semu). Teknik pengumpulan data meggunakan observasi, wawancara, dan dokumentasi. Desain pengabdian ini menggunakan pre dan post-test only group design, subjek merupakan semua guru pada SDIT Almadina Semarang. Hasil pengabdian menunjukkan bahwa model pembelajaran kolaboratif internet dengan menggunakan aplikasi google seperti google sheet, google docs dan google slide berpengaruh secara signifikan terhadap kemampuan guru dalam menyusun dokumen kurikulum secara kolaboratif. Peningkatan kemampuan dalam pengoperasian dan pembuatan dokumen kurikulum menggunakan google sheet, google docs dan google slide sebesar 66.67% (±16.07), 80.00% (±5.00), dan 51.67% (±2.89), masing-masing. Berdasarkan hasil tersebut dapat disimpulkan bahwa Pengunaan aplikasi google secara langsung mampu meningkatkan kinerja guru SDIT Almadina dalam penyusunan dokumen kurikulum.
Co-Authors - Jumaeri A Tri Widodo A Tri Widodo Adinda Hapsari Aditia Nur Bakti Agung Feinnudin Amalina, Nur Dina Anggreani, Ina Annisa, Riska Nurfirda Aprillia Findayani Arma Yoga Astutik, Kasni Atika Wijaya Ayu Nugrahantia, Ayu Azzahra, Elvara Siti Azzahra, Yasmin Bahij, Aida Tika Biluthfil Bakti, Prayoga Bangun Yulianto Cepi Kurniawan Damayanti, Kristina Damayanti, Lutfia Damayanti, Yosephine Debbie Dewi, Silmi Dalila Millatina Dhian Ekowati Dian Sri Asmorowati Edi Prayitno, Edi Edy Cahyono Eko Budi Susatyo Elsa Ari Astuti Endang Susilaningsih Evalisa Apriliani, Evalisa Evita H. Legowo Fitri Rahmawati Fitri Rahmawati Harjito - Harjito Harjito Hidayah, Aida Nur Hutomo Wahyu Nugroho I Ketut Suada Imam Khabib Imam Kusmaryono Indriana Kartini Isti Hidayah Iswanto, Haifa Firyal Joseph P. Brinkman Junaid Sadrach Kartikasari, Reny Kasmadi Imam Supardi Kasmui -, Kasmui Khaerur Rifqi, Khaerur Khafidhotun Naimah Kolilah, Liluk Lailatul Badriyah Latifah Latifah LENI HERLINA Luluk Amnah Fitriyana, Luluk Amnah M Rafi Antoni M. Udiharto Malik, Septina Praditia Marcelino, Richie Mohammad Alauhdin, Mohammad Mubarak, Dinda Halimah Agrifani Muflikah, Binti Murbangun Nuswowati Nila Ubaidah Noegroho Hadi NOEGROHO HADI HS Noegroho Hadi HS. Nuhyal Ulya Nurhikmah Nurhikmah Nuril Huda Nurul Fadhilah Pertiwi Ayu Pamuji Kurniatun, Pertiwi Ayu Pamuji Pramestia, Rena Aliya Prima Astuti Handayani Puji Eka Rahayu Puji Eka Rahayu Putriana Dewi Rahayu, Sri Astusi Rani, Devitra Saka Rida Farida, Rida Risna Anggraeni Rohmah, Rojaa Maysa Rudiyanto, Aris Rudiyanto, Aris Sadrach, Junaid Saptorini Saptorini Saptorini Saptorini, Saptorini Siddiq Wahyu Hidayat Sigit Priatmoko Soeprodio Soeprodio, Soeprodio Soeprodjo Soeprodjo, Soeprodjo Sri Astusi Rahayu Sri Susilogati Sumarti Sri Wahyuni Sri Wahyuni Sri Wahyuni SRI WARDANI Subiyanto Hadi Saputro Sugihardjo Sugihardjo Sugihardjo Sugihardjo Sulistyaningsih, Nining Sulistyarini, Ika Teguh Budiyanto, Teguh Triyono Triyono Try Astuti Wandah Wibawanto Wara Dyah Pita Rengga Wega Trisunaryanti Witono Basuki, Witono Woro Sumarni Wuwus Ardiatna Zahro, Ainu Ilmiatuz