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Dian Anggraini
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SELECTIVITY OF LAMPUNG ZEOLITE TOWARDS MATRICES CATIONS GENERATED FROM URANIUM FISSION Siti Amini; Dian Anggraini; Yusuf Nampira; Rosika Rosika; Noviarti Noviarti; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 2 No. 1 (2003)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Selectivity of zeolite-lampung (ZKK) towards some matrices cations generated from uranium fission products has been investigated using some typical fission product-non-radioactive cations by cation exchange batch-system process. The previous investigation showed that zeolite-lampung is effectively able to absorb cesium ion from radioactive waste, consequently the presence of others cations i.e. generated cations from the uranium fission products are assumed as the competitive cations which may affect the zeolite selectivity on to Cs exchanges, on the otherhand the Cs-exchange capacity of zeolite would decrease. The main matrices cations which present in the natural zeolite are K+, Na+ and Ca2+and those are generated from fission products such as Cs+, Ba2+, Sr2+ and Ce4+ exist in the nuclear spent fuel solution. The ion exchanges of counterpart cations in zeolites with that each of Cs+, Ba2+, Sr2+ and Ce4+ ion or/and its mixtures have been examined. The selectivity of zeolite onto mentioned exchanged cations has been shown by the correlation of fraction of the cations concentration in the zeolite (Az) towards that in equilibrated solution (As). The results show that the raw zeolite Lampung selectivity is decrease in order to Cs+> Ba2+= Sr2+ > Ce4+. The exchanged capacity of zeolite into Cs+ ion is decreased by the presence of combining ions of Ba2+, Sr2+ and Ce4+, and so are those competitive cations.
Cs ION EXCHANGE CAPACITY OF ZEOLITE BAYAH, LAMPUNG, AND TASIKMALAYA Noviarty Noviarty; Dian Anggraini; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Cs ions exchange process has been conducted on natural zeolite (from Bayah, Lampung, and Tasikmalaya) which was activated with ammonium chloride. NH4-zeolite which was formed, is used to exchanger or absorber material of Cs ions. The duration of ions exchange process was optimized by varying the stirring time of 1 hours, 2 hours, 3 hours, 4 hours, 5 hours, and 24 hours. In all three zeolite types was obtained the optimization process time are the contact time of 1 hours. Cation exchange capacity (CEC) of natural zeolite was determined by standard methods. Attempts to obtain a monocation zeolite as a NH4-zeolite effectively acquired about 88% which used as a exchanger or absorber Cs ions. The effectiveness of Cs ions Cation exchange capacity with the ammonium was determined by batch-exchange for 1 hour. The calculation result o effectiveness CEC-Cs are 1.4269 Meq/gram ± 0.0397, RSD: 2.79% for Bayah zeolite, 1.4476 Meq/gram ± 0.0103, RSD: 0.71% for Lampung zeolite, 1.4044 Meq/gram ± 0.0050, RSD: 0.36% for Tasikmalaya zeolite. Stability of Cs-zeolte bond against heat treatment was tested at temperature of 25°, 300°, 600 °, 900°, and 1200 °C. The result showed that the relea se of Cs-ions is not significant from zeolite structure. The heating below 900°C, the release of Cs-ions jus t occurs on the surface (it was not change the initial of zeolite structure), whereas above that temperature was occurs the changed of zeolite structure, although there was not visible the release of Cs-ions on leaching process at the water. The conclusion is all three types of natural zeolite was potentially to be used as Cs-ions isolate which is especially useful to absorbing Cs-radioactive isotope as a result from fission of nuclear fuel element.
Optimasi Bobot Portofolio Menggunakan Algoritma Genetika Muhammad Fadli Azim; Azizah Azizah; Dian Anggraini
Jurnal Sains Matematika dan Statistika Vol 7, No 1 (2021): JSMS Januari 2021
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jsms.v7i1.12190

Abstract

Dalam berinvestasi investor dapat menginvestasikan dananya di lebih dari satu aset, hal ini dilakukan untuk mengurangi beban risiko yang akan besar yang akan ditanggung kedepannya. Akan tetapi, investor perlu menentukan portofolio yang optimal, artinya menentukan bobot atau persentase di masing-masing saham yang diinvestasikan dengan tujuan akhir mengoptimalkan return. Dalam penelitian ini, dilakukan penentuan bobot portofolio optimal dengan menggunakan algoritma genetika menggunakan R-software. Algoritma ini sangat efektif untuk menyelesaikan suatu permasalahan yang memiliki banyak kemungkinan solusi, dan cukup sederhana dalam penerapannya. Data yang digunakan pada penelitian ini adalah data historis saham harian dari 6 perusahaan yaitu  PT Astra Internasional(ASII), PT Telekomunikasi Indonesia(TLKM), PT Bank Rakyat Indonesia(BBRI),  PT Bank Central Asia(BBCA), PT  Bank Mandiri Indonesia(BMRI) dan ), PT Bank Negara Indonesia(BNII). Berdasarkan algoritma genetika, untuk memeperoleh portofolio optimal maka bobot daham Astra Internasional memiliki Persentase sebesar 5%, kemudian saham untuk telkom memiliki persentase 30%, saham untuk Bank BRI memiliki persentase 20%, saham bank BCA 16%, Saham Bank Mandiri 12% dan Saham Bank BNI 17%.
STUDI XRD MANGAN OKSIDA BIRNESSITE YANG DIPREPARASI MELALUI METODE SOL-GEL DAN KERAMIK Dian Anggraini; Amir Awaluddin; Pepi Helza Yanti
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Birnessite  is a naturally occurring layered manganese oxide found as a manganese nodules  in sea floor or    soil deposit. In this study, birnessite was synthesized  using two types of methods, solid state ceramic  approach and sol-gel reaction both KMnO4 and maltose were used as reactants in these two methods.  The products were then characterized using XRD for determination of phases, crystallinity and purity. The results showed  the both techniques lead to  the  formation of birnessite with different crystallinity and purity. The ceramic method produced  more crystalline and pure birnessite than that of sol-gel.  The typical reaction parameters for the synthesis birnessite by the ceramic method were 3:1 mole ratio (KMnO4over maltose) calcination at  700o C for 7 hours with  the  93,7%  purity  of  birnessite. However,  by  the sol-gel  method birnessite  produced only  31,8%  with the following condition  4:1 mole  ratio (KMnO4 over maltose) and calcination temperature of 450o C for 2 hours.
Developing English Textbook For Second Semester Students Of Syariah Banking Department At Islamic Institute Of Ma’arif NU Metro Lampung In Academic Year 2015/ 2016. dian anggraini
Jurnal Iqra' : Kajian Ilmu Pendidikan Vol 1 No 1 (2016): Iqra : Jurnal Kajian Ilmu Pendidikan
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

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Abstract

Tujuan utama dari mengajar bahasa Inggris di IAIM NU Metro Lampung adalah untuk mengembangkan kemampuan bahasa Inggris siswa agar mereka dapat mengerti dan memahami materi bahasa Inggris dan mereka dapat berbicara bahasa Inggris dengan menggunakan kata-kata sederhana. Bahasa inggris telah diajarkan dalam lembaga sebagai bahasa asing. Bahasa Inggris diajarkan untuk memberikan siswa dengan kesempatan yang lebih besar untuk belajar bahasa Inggris, sehingga mereka dapat mengembangkan keterampilan bahasa Inggris mereka. Namun, pengajaran bahasa Inggris di departemen perbankan syariah memiliki sejumlah masalah yang perlu diperhitungkan. Masalah utama adalah bahwa bahan pelajaran Bahasa Inggris yang tepat tidak tersedia. Bahan yang digunakan pada saat ini tidak sesuai dengan kebutuhan dan karakteristik siswa. Masalah lain yang saat ini muncul adalah: motivasi & minat siswa dalam belajar bahasa Inggris masih rendah sehingga pencapaian siswa dalam bahasa Inggris tidak memuaskan dan siswa tidak menyadari dengan manfaat belajar bahasa Inggris. Dalam hal ini, siswa perlu bahan yang sesuai dengan bidang mereka. Jadi, mereka bisa menarik minat dan motivasi ketika mereka belajar bahasa Inggris. Prosedur yang digunakan dalam penelitian ini melakukan analisis kebutuhan, mengembangkan bahan Bahasa Inggris, melakukan validasi ahli, revisi materi, mencoba bahan, dan merevisi bahan. Untuk melakukan analisis kebutuhan, kuesioner didistribusikan kepada siswa dan guru diwawancarai. Untuk melakukan validasi ahli, kuesioner diberikan untuk membaca pakar dan ahli konten. Kuesioner juga diberikan kepada siswa dan guru diwawancarai untuk melakukan try-out. Data dari hasil analisis kebutuhan menunjukkan bahwa sebagian besar siswa setuju untuk mengembangkan bahan bahasa Inggris yang cocok dan terkait dengan kehidupan mereka, ada yang mendengarkan, membaca diikuti dengan kosa kata, menulis, dan berbicara. Data dari validasi ahli menunjukkan bahwa ada beberapa poin yang baik dan lemah dari bahan dikembangkan sehingga orang-orang yang lemah perlu direvisi. Dari try out dari bahan dikembangkan data menunjukkan penerapan materi yang dikembangkan dalam memotivasi siswa untuk belajar bahasa Inggris. Hal ini tercermin dalam data yang dikumpulkan dari kuesioner dan hasil mencoba out. Data yang dikumpulkan dari pengamatan menunjukkan bahwa siswa terlibat aktif dalam proses belajar dan mengajar selama mencoba. Salah satu alasan adalah bahwa topik yang dibahas adalah menarik dan terkait dengan kehidupan mereka. Selain itu, tugas-tugas harus dilakukan siswa dapat mengaktifkan pengetahuan mereka tentang topik dan keterampilan bahasa. Berdasarkan hasil try out, beberapa revisi yang dibuat agar bahan menjadi lebih baik dan mereka akhirnya bisa sesuai dengan kebutuhan dan karakteristik siswa. Kata kunci: buku teks bahasa Inggris, pengembangan materi
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE THINK PAIR SHARE (TPS) UNTUK MENINGKATKAN HASIL BELAJAR IPA SISWA KELAS IV.B SD NEGERI 62 PEKANBARU Dian Anggraini; Jesi Alexander Alim; Syahrilfuddin Syahrilfuddin
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 3, No 1 (2016): Wisuda Februari 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstarck : This research was aimed to increase learning proces and student achievement of science lesson V.C grade years of 2014 / 2015. Subject of this research is student IV.B grade of state elementary school 62 Pekanbaru which is total 30 students, consisted of 21 girls and 14 boys. This was a classroom research which has two cycles.the data shown either learning proces icreased. The basic score of daily examination as 12,04% which 25 students passed and 10 students failed. The ending of daily examination was as 71,43%. The second daily examination alsos increased from basic score as 21,44% which 32 students passed and 3 students failed. The ending of second daily examination was 94,43%. Based on the expalanation above it can be concluded that the imlpementation learning cooperatif type think pair share (TPS) increased students’ achievement in science lesson of students IV.B grade of state elementary school 62 Pekanbaru.Keywords : Cooperatif Think Pair Share (TPS), Students Achievement The Result Of Science Studies
Metode Seasonal ARIMA untuk Meramalkan Produksi Kopi Dengan Indikator Curah Hujan Menggunakan Aplikasi R di Kabupaten Lampung Barat Hani Nastiti Tantika; Nanang Supriadi; Dian Anggraini
Matematika Vol 17, No 2 (2018): Jurnal Matematika
Publisher : Universitas Islam Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jmtm.v17i2.3831

Abstract

Abstrak. Penelitian ini bertujuan untuk mendapatkan model terbaik dan meramalkan jumlah produksi kopi berdasarkan model terbaik yang telah diperoleh menggunakan metode Seasonal ARIMA yaitu dengan cara memodelkan data. Setelah diperoleh beberapa model pada masing-masing data, kemudian model terbaik dipilih berdasarkan pada kriteria nilai AIC dan SBC dengan nilai paling minimum. Hasil penelitian diperoleh untuk nilai AIC dan SBC yang paling minimum untuk data produksi kopi adalah model ARIMA (1,2,0)(1,2,1)12 dan untuk data curah hujan adalah model ARIMA (0,1,1)(1,1,0)12. Model tersebut adalah model yang akan digunakan untuk memprediksi jumlah kopi pada beberapa tahun mendatang di Kabupaten Lampung Barat.Kata Kunci: seasonal ARIMA, peramalan, aplikasi R, kopi, lampungAbstract. This research is used to get the best model and predict the amount of coffee production based on the best model that have been obtained by using seasonal ARIMA method. There are several steps of ARIMA seasonal method, the first is modeling data After obtaining several models on each data then the best model is chosen based on AIC and SBC value criteria with minimum value, minimum AIC and SBC value for coffee production data is ARIMA model (1,2,0)(1,2,1)12 and for rainfall data is ARIMA model (0,1,1)(1,1,0)12. The model is a model that will be used to predict the number of copies in the next few years in West Lampung District.Keywords: seasonal ARIMA, forecasting, R application, coffee, lampung
HUBUNGAN KOORDINASI MATA DAN KAKI DENGAN KEMAMPUAN PASSING PADA PERMAINAN SEPAK TAKRAW SISWA SMPN 1 TELUK KUANTAN Dian Anggraini; Drs. Saripin., M.Kes AIFO '; Kristi Agust
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 3, No 2 (2016): Wisuda Oktober 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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ABSTRACT, The problem in this study were students in movement, especially at the time of passing students have not been so good, it is suspected because of foot-eye coordination is not optimal. This study aims to determine whether there is a corelation between eye coordination and foot with passing ability in the game of sepak takraw at students of SMP Negeri 1 Teluk Kuantan, in this study a sample of the entire population of students who take extra sepak takraw with a total of 36 people. Based on the research that has been done on the student SMP Negeri 1 Teluk Kuantan who follow extracurricular sepak takraw to determine the extent to which the corelation between the eye and foot coordination with sepak takraw passing ability of students, obtained r = 0454 included the category enough. Tests of significance using the formula t test Significance. From the calculation results are known t = 2.97, while t table = 1.697. So t = 2.97> t table = 1.697. Then the conclusion can be drawn as follows: There is a significant corelation between the eye and foot coordination with passing ability in the game of sepak takraw at students of SMP Negeri 1 Teluk Kuantan "accepted.Keywords : Coordination, Eye-foot, Passing, Sepak Takraw
PENGARUH PEMBERIAN DAUN UBI JALAR DENGAN DOSIS YANG BERBEDA TERHADAP KELULUS HIDUPAN BENIH IKAN MAS (CYPRINUS CARPIO L.) DALAM PENGANGKUTAN administrator admin; Dian Anggraini
Selodang Mayang: Jurnal Ilmiah Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Vol 2 No 3 (2016): Vol. 2 No. 3, Desember 2016
Publisher : Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47521/selodangmayang.v2i3.43

Abstract

This research has been conducted for on 1 week (5th February – 12February 2015), whichplaced in UPTBAT Rumbai from Pekanbaru to Tembilahan. The goal of this research is toknow about how the influence of given the potato sweet’s leaf with different dose towardsurvival rate of goldfish seed (Cyprinus carpio L) in transportation. The experiment methodeis applied with 4 treatments and 3 times. According to the result of each treatment can beseen that A (100 gram) is 99%, treatment B (120 gram) 97%, treatment C (140 gram)92,5%, and control 90%. From this research, can be conclued that the best survival rate thegoldfish in transportation is in treatment A (100 gram).
Enhancing Students’ Speaking Through the Process of Performing Drama Dian Anggraini
Register Journal Vol 7, No 1 (2014): REGISTER
Publisher : IAIN Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.064 KB) | DOI: 10.18326/rgt.v7i1.37-50

Abstract

An action research has always been interesting thing for teacher because the root of it is taken from their own problems. This study is a self reflection of a problem that is faced by the researcher. It focuses on a certain activity in a certain class and at a certain period of time. Questionnaires, interview sheet, observation sheet, students’ worksheets, and teacher’s lesson plans serve as data resources. The result shows a significant increase in the students score. However, there is variation on the general result. Keywords:collaborative learning; drama ; motivation 
Co-Authors . Masrukan . Noviarty . Yanlinastuti Aditya Fulvian Mahatma administrator admin Ahmad Arif Amir Awaluddin ARIF NUGROHO ASLINA BR. GINTING Aslina Br. Ginting Asma Alhusna Athfal Aldiefa Ayu Monia, Fenny Ayu Monia Azizah Azizah Bambang Ariyanto Boybul . BOYBUL BOYBUL Doly Nofiansyah Drs. Saripin., M.Kes AIFO ' Ely Triyana Farida Isroani Febriana, Noni Fitri Mulianda Gina Nurdina Gina Nurdina Hadi Susanto Hani Nastiti Tantika Hasri Fendi Herdiman Hilda Novyanda Hilfi Pardi Imam Hanafi Indah Puspitasari Iwan Syahjoko Saputra Jesi Alexander Alim Juniarni, Lia jurnalmap map Kristi Agust Maman Kartaman Margaretha Wulan Puspita Yoan Meliana Fitri Mey Lona Verawaty Zendrato Muhammad Fadli Azim Nanang Supriadi Noviarti Noviarti Noviarty Noviarty Nunuk Supraptini Pepi Helza Yanti Puspasari, Susy Putri Amelia Ningsih Rahma Kartika Rahmi Eka Putri Reza Meilinda Risqi Fajar Ramadhan Rosika Rosika Ryan Hidayat Rafiola Sabdo Purnomo Setiyarto, Setiyarto Siti Amini Siti Robeatul Adawiyah Siti Suhartati SRI RAHAYU Sudirman Suhono Suryawahyuni Latief Sutarji ÔÇì Sutri Indaryati Syahrilfuddin Syahrilfuddin Taufiq, M. Aries Teo Zumibakti Andani Yasir Wijaya Yusuf Nampira