35 research outputs found
Pengembangan Perangkat Pembelajaran Hibrida untuk Rintisan SMA Bertaraf Internasional Kelas XI Semester 2 pada Topik-Topik Kesetimbangan Larutan, pH Asam-Basa, dan Larutan Penyangga.
No full textABSTRAK Retnosari, Rini. 2011. Pengembangan Perangkat Pembelajaran Hibrida untuk Rintisan SMA Bertaraf Internasional Kelas XI Semester 2 pada Topik-Topik Kesetimbangan Larutan, pH Asam-Basa, dan Larutan Penyangga. Skripsi, Jurusan Kimia, Fakultas MIPA, Universitas Negeri Malang. Pembimbing: (I) Dra. Surjani Wonorahardjo, Ph.D; (II) Herunata, S.Pd, M.Pd. Kata-kata kunci: Perangkat pembelajaran hibrida, kesetimbangan larutan, pH asam-basa, larutan bufer, RSMA-BI Berdasarkan UU RI No. 20 Tahun 2003, pemerintah menyelenggarakan satuan pendidikan bertaraf internasional yang diawali dengan program Rintisan Sekolah Bertaraf Internasional (RSBI). Setelah minimal empat tahun diharapkan sekolah tersebut layak menjadi Sekolah Bertaraf Internasional (SBI). Dalam panduan penyelenggaraan Rintisan Sekolah Menengah Atas Bertaraf Internasional (RSMA-BI) disebutkan bahwa SBI = SNP + X, dengan X adalah pendalaman dan pengayaan materi, penggunaan bahasa Inggris, pemanfaatan Teknologi Informasi dan Komunikasi (TIK) dalam pembelajaran, dan pengenalan budaya lintas bangsa. Adanya pendalaman dan pengayaan materi menuntut untuk disusunnya kurikulum RSMA-BI. Kurikulum RSMA-BI dikembangkan berdasarkan Kurikulum Tingkat Satuan Pendidikan (KTSP), ditambah dan diperdalam berdasarkan isi kurikulum untuk mata pelajaran sejenis pada sekolah-sekolah di negara-negara OECD atau negara maju lainnya dalam bidang pendidikan. Akibat dari hal tersebut maka perlu disusun suatu bahan ajar yang memenuhi kurikulum RSMA-BI. Selain itu proses pembelajaran pada RSMA-BI harus interaktif, inspiratif, menyenangkan, dan menantang sehingga dapat memotivasi siswa untuk berpartisipasi aktif dalam kegiatan pembelajaran. Salah satu alternatif pembelajaran tersebut adalah pembelajaran hybrida dimana pembelajaran tidak hanya terjadi di dalam kelas namun dapat dilakukan di luar kelas dengan memanfaatkan TIK. Beberapa topik pada pelajaran kimia di RSMA-BI adalah kesetimbangan larutan, pH asam-basa, dan larutan bufer. Proses pembelajaran pada topik-topik tersebut memerlukan media dan bahan ajar yang memenuhi aspek-aspek makroskropik, mikroskropik, dan simbolik. Tujuan dari penelitian ini adalah untuk mengembangkan perangkat pembelajaran hibrida pada topik-topik tersebut yang memenuhi ketiga aspek tersebut, dan mengetahui kelayakannya berdasarkan hasil validasi oleh validator. Pembelajaran hibrida dalam penelitian ini merupakan kombinasi dari pembelajaran tatap muka di kelas dengan pembelajaran secara online menggunakan web-based learning yang dirancang dengan mengunakan software CMS Moodle. Perangkat pembelajaran yang dikembangkan meliputi silabus, RPP, worksheet, handout, dan instrumen penilaian yang dilengkapi dengan web berbasis moodle. Perangkat pembelajaran dikembangkan berdasarkan model Dick & Carey yang telah disesuaikan untuk pembelajaran hibrida. Perangkat pembelajaran yang dikembangkan lebih dulu divalidasi sebelum digunakan di RSMA-BI. Uji kelayakan terhadap perangkat pembelajaran yang dikembangkan menggunakan angket yang berupa lembar penilaian menggunakan skala bertingkat, lembar saran dan tanggapan. Uji kelayakan dilakukan oleh dua dosen kimia, dua guru kimia RSMA-BI di Malang, serta siswa kelas XI semester 2 di salah satu sekolah di RSMA-BI Malang. Data yang berhasil dikumpulkan dianalisis secara deskriptif. Dari hasil analisis ini dapat disimpulkan layak atau tidaknya perangkat pembelajaran yang dikembangkan untuk digunakan di RSMA-BI. Komentar dan saran-saran dari validator digunakan untuk perbaikan perangkat pembelajaran sebelum diuji cobakan secara lebih luas pada sekolah-sekolah RSMA-BI. Hasil penelitian menunjukkan bahwa skor rata-rata kelayakan perangkat pembelajaran yang diberikan oleh dosen dan guru adalah 91%, sedangkan yang diberikan oleh siswa adalah 78%. Berdasarkan hasil tersebut perangkat pembelajaran yang dikembangkan dapat dianggap layak untuk digunakan di RSMA-BI. Perbaikan perangkat pembelajaran berdasarkan komentar dan saran dari dosen, guru, dan siswa memungkinkan untuk diuji cobakannya secara lebih luas pada sekolah-sekolah RSMA-BI
Misconception of pre-service chemistry teachers about the concept of resonances in organic chemistry course
No full textSYNTHESIS OF CARVACROL DERIVATIVES AND THEIR POTENTIAL AS CARDIOPROTECTIVE AGENTS AGAINST DOXORUBICIN-INDUCED CARDIOTOXICITY
Get PDF岐阜大学(Gifu University)博士(学術)博士論文 (Doctoral dissertation)doctoral thesi
DEKONSTRUKSI PERAN TOKOH DALAM NOVEL PESANTREN IMPIAN KARYA ASMA NADIA
Get PDF"Novel" Pesantren Impian is a novel that tells the promiscuity of middle and upper class that emphasize their moral behavior. The interesting thing about this novel is to raise stories about religion and lifestyle issues, and was chosen to be featured in an adaptation to the theater performance in Iowa.The purpose of the research with the title of the Deconstruction the role of the characters in novels a Pesantren Impian of Asma Nadia. For the firsy describes some of the characters that could describe. The theory used in research the theory of deconstruction. The Derrida’s said that deconstruction can be reviewed from the aspect of characters. Therefore, the purposes of research is to know characterization and deconstruction the role of the characters novels. The approach used in this study is descriptive a qualitative. The data used in research in the form of words, sentences, and discourses related to the object of research contained in the novel Pesantren Impian works Asma Nadia. The source of data used in this research is the novel Pesantren Impian works by Asma Nadia published in January 2016, 300 pages. Data collection techniques used in this study are the techniques of reading, notes, and investigator techniques. The results of this presentation are presented in the form of descriptive exposure. Based on the results of descriptive analysis of novel Pesantren Impian of Asma Nadia\u27s work in the following results. There are 18 characters have been described to know the existing characterizations, namely Santi, Sinta, Rini, Ita, Iin, Sisy, Inong, Evi, Butet, Ipung, Sri, Yanti, Tanti, Umar, Mas Good, Teungku Budiman, Mrs. Rini, Lik Kusno. Two antagonists or black character and sixteen protagonists or white character. While in the deconstruction role of the characters in the novel Pesantren Impian works Asma Nadia only a few figures that can be deconstructed, namely Teungku Budiman, Rini, Mas Good, Sisy, and Mr. Lik Kusno. because in general the reader assumes that the antagonist can not turn into a protagonist. However, in this deconstruction the antagonist becomes the protagonist, while the protagonist becomes an antagonist
Synthesis of Curcumin Derivatives (2.5-Bis((E)-4-Hydroxy-3-Methoxy Benzylidine) Cyclopenta-1-On) from Vanillin and Its Activity Test Against Α-Glucosidase Enzymes
Get PDFSynthesis of curcumin analogs (2.5-Bis((E)-4-Hydroxy-3-Methoxy Benzylidine) Cyclopenta-1-On) based on Claisen-Schmidt condensation using an acid catalyst and inhibition of glucosidase enzyme was carried out. The antidiabetic activity of curcumin analogs was carried out by the use of α-glucosidase enzyme from moldy rice (Oryza sativa). The curcumin analogs were synthesized by reacting the vanillin with cyclopentanone. The structure of all products was confirmed by FTIR, GC-MS, 1H-13C-NMR spectrometers, and the activity enzyme. The results showed the curcumin analogs were yielded in 52.27%, respectively as yellowish-green solid. The inhibition test of the α-glucosidase enzyme showed that the curcumin analogs were the potential to inhibit the α-glucosidase enzyme with an inhibition percentage of about 94.26% in 5 mM
Preliminary Study on Antibacterial Activity of Sawo Kecik (Manilkara kauki (L.) Dubard) Roots Extract
Get PDFThe roots of sawo kecik (Manilkara kauki (L.) Dubard) contain astringent that can be used to treat diarrhea for infants. However, the active antibacterial substance in sawo kecik roots has not been known. Therefore, the research to understand the antimicrobial activity of sawo kecik roots extract against Escherichia coli and Staphylococcus aureus was performed. Sawo kecik roots were macerated using methanol and chloroform. The result was then treated with E.coli and S.aureus with a concentration of 5 ppm and compared to negative control (solvent) and further observed and analyzed how reduced the bacterial growth with Two Ways ANOVA without interaction. The research results indicated that the sawo kecik roots methanol extract was effective to slow down the growth of S.aureus (0.160 ± 0.007) but ineffective against E.coli, whereas sawo kecik roots chloroform extract was not effective to reduce both bacteria. It can be concluded that further research is required to measure and verify the antibacterial activity of the extract using higher concentration samples and different research methodology
Aktivitas Antibakteri Metabolit Sekunder dari Ekstrak Metanol Biji Alpukat (Persea americana Mill)
Get PDFMetabolit sekunder yang memiliki aktivitas antibakteri telah diisolasi dari ekstrak metanol biji alpukat (Parsea americana Mill). Proses isolasi diawali dengan ekstraksi menggunakan metanol, dilanjutkan dengan fraksinasi dan pemisahan menggunakan berbagai teknik kromatografi seperti kromatografi cair vakum (KCV) dan kromatografi kolom gravitasi (KKG). Dari proses isolasi tersebut diperoleh komponen K-1 yang berwujud padat dan berwarna putih. Komponen K-1 mempunyai titik lebur 67-70˚C, larut dalam kloroform, etil asetat, dan etanol. Komponen K-1 mempunyai λmaks pada 219,0 nm mengindikasikan adanya transisi π→π* dan 344,0 nm mengindikasikan adanya transisi nπ*. Berdasarkan hasil interpretasi spektrum IR, komponen ini mengandung gugus -OH, gugus -C=O ester, ikatan -CH, dan ikatan C=C. Komponen K-1 diduga golongan saponin. Uji aktivitas antibakteri terhadap pertumbuhan bakteri Escherichia coli dan Staphylococcus aureus mengindikasikan ekstrak metanol biji alpukat dan komponen K-1 aktif sebagai antibakteri, sehingga kedepannya memiliki prospek bagi pengembangan obat tradisional. An antibacterial activity of secondary metabolite has been isolated from methanol extract of avocado seed (Parsea americana Mill). The isolation process has started with extracting using methanol, then fractioning and purifying by chromatography technique such as vacuum liquid chromatography and gravitation column chromatography. The white solid of K-1 component has been isolated from this process. The melting point of K-1 component was 67-70˚C and dissolved in chloroform, ethyl acetate, and ethanol. K-1 component has λmaks at 219,0 nm (π→π* transition) and 344,0 nm (n→π* transition). Based on IR spectrum interpretation, this component contained –OH group, -C=O group of ester, -CH bond, and C=C bond. K-1 component was predicted as saponin group. The antibacterial activity assay against Escherichia coli and Staphylococcus aureus indicated that methanol extract of avocado seed and K-1 component showed antibacterial activity toward both bacteria, so that this component has future chances for traditional medicine development
The Effects of Inquiry-Based Learning Strategy on Chemistry Undergraduate Students' Conceptual Understanding and Science Process Skill Achievement in NMR Spectroscopy
No full textPreliminary Study on Antibacterial Activity of Sawo Kecik (Manilkara kauki (L.) Dubard) Roots Extract
Get PDFThe roots of sawo kecik (Manilkara kauki (L.) Dubard) contain astringent that can be used to treat diarrhea for infants. However, the active antibacterial substance in sawo kecik roots has not been known. Therefore, the research to understand the antimicrobial activity of sawo kecik roots extract against Escherichia coli and Staphylococcus aureus was performed. Sawo kecik roots were macerated using methanol and chloroform. The result was then treated with E.coli and S.aureus with a concentration of 5 ppm and compared to negative control (solvent) and further observed and analyzed how reduced the bacterial growth with Two Ways ANOVA without interaction. The research results indicated that the sawo kecik roots methanol extract was effective to slow down the growth of S.aureus (0.160 ± 0.007) but ineffective against E.coli, whereas sawo kecik roots chloroform extract was not effective to reduce both bacteria. It can be concluded that further research is required to measure and verify the antibacterial activity of the extract using higher concentration samples and different research methodology
