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Jurnal Entropi
Published by Universitas Negeri Gorontalo
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
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Articles 10 Documents
 1 
Search results for , issue "Vol 2, No 2, 2007" : 10 Documents clear
KULIT BIJI DAN PERANANNYA TERHADAP VIABILITAS Ahmad, Jusna
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

Kulit biji bervarisi strukturnya tergantung pada jenis tanamannya, dan kulit biji sangat berperan dalam viabilitas biji, maka perlu untuk mengenali berbagai strutur kulit biji terutama tanaman budi daya. Hal ini penting karena jika kita mengenali karakteristik kulit biji tanaman yang akan kita budi dayakan, maka kita dapat mengupayakan kondisi optimal untuk mempertahankan maupun memberi perlakuan khusus terhadap biji tersebut agar viabel. Perkecmbahan selalu membutuhkan air dan oksigen. Oleh karena itu untuk memulai perkecambahan, imbibisi harus berlangsung terlebih dahulu. Kulit biji yang keras mencegah penyerapan air dan O2 . Untuk terjadi imbibisi kulit biji harus diskarifikasi. Ini dapat dilakukan secara mekanis (dipecah atau dikupas dengan pisau), atau secara kimiawi. Dalam laboratorium agrikultur (jika diperlukan), alkohol atau pelarut lemak yang lain yang dapat melarutkan bahan lilin yang kadang-kadang menghambat masuknya air, atau asam kuat dapat digunakan. Perlakuan ini akan mempengaruhi viabilitas.
ISOLASI DAN IDENTIFIKASI EUGENOL DARI TANGKAI CENGKEH JENIS ZANZIBAR (Eugenia caryopillata, Thumb) Fatimah, Feti
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

A research was done to isolate and identify eugenol from clove stalk of Zanzibar variety. Isolation of clove stalk oil was done using steam destilation technique, and for identification using Gas Chromatography-Mass Spectrophotometer. The isolate from clove stalk oil of Zanzibar variety, fresh and dried variable has 0,565% and 0,485% yield. The oil was yellow and has cloves scent. From the test of clove stalk oil quality, fresh and dried variable was known that its water content were 0,22% and 0,33%., specific weight 1,027 and 1,068 g/mL., with refraction index 1,5186. Beside eugenol, GC-MS analyzes showed that other constituent component in clove stalk oilw were methyl benzena, methyl salisilat, caryophylin oxide, trans-caryophylin, a-Humulene. Eugenol can be isolate from clove stalk oil by the addition of NaOH, acidify with HCl and then extracted using petroleum eter as a solvent. Eugenol that obtained from clove stalk oil, fresh and dried variable were 66,47 % and 76,92%, respectively. Eugenol analysis from isolated clove stalk, fresh and dried variable has 90,10% and 93,96% purities, respectively. Eugenol obtained from fractionation was analyzes using GC, and spiking technique identification.
ANALISA KETERSEDIAAN SARANA DAN PRASARANA TERMINAL BUS PARE-PARE Utiarahman, Arfan
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

Terminal bukan hanya sekedar dibangun sebagai peralihan dari suatu sistim transportasi ke sistim transportasi yang lain, tetapi harus memikirkan kenyamanan yang antara lain fasilitas utama dan fasilitas penunjang yang memadai. Tujuan dari penelitian ini adalah menganalisa ketersediaan sarana dan prasarana yang terminal Bus Pare-Pare sesuai dengan areal yang tersedia. Hasil Penelitian : 1). Untuk luas areal perparkiran dalam terminal sesuai dengan perhitungan pada jam puncak adalah 185, 64 m, dengan pembagian untuk areal kedatangan luas 92,82 m2 dan untuk areal keberangkatan luas 92,82 m2. 2). Untuk luas areal ruang tunggu penumpang adalah 703,71 m2 berkapasitas 1117 orang .3) Dari fasilitas penunjang dalam terminal masih sudah memadai, namun ada yang kurang terpakai. Kesimpulan Fasilitas utama dan penunjang dalam terminal masih sudah memadai, namun ada yang kurang terpakai akibat sedikitnya penumpang yang naik dan turun didalam terminal.
SINTESIS 1-(3,4-METILENDIOKSIFENIL)-2-PROPANOL VIA REAKSI OKSIMERKURASI-DEMERKURASI Gugule, Sanusi
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

A study has been carried out to synthesis of 1-(3,4-methylenediooxy-phenil)-2-propanol from safrole (isolated from oil of lawang). The synthesize was done using react the oxymercurationdemercuration by means of mercury of acetate and sodium of boron hydride, while identifying conducted with the liquid gas chromatography and spectrometer. The experimental result show that the percentage yield of 1-(3,4-methylenediooxyphenil)-2-propanol was 77,78%.
Meningkatkan Hasil Belajar Siswa Pada Materi Ikatan Kimia Dengan Menggunakan Model Pembelajaran Kooperatif Tipe STAD Pada Siswa Kelas X3 SMA Negeri 3 Gorontalo Uno, Mayawati; Isa, Ishak; Lukum, Astin
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

The title of classroom action research is Improving the achievement of concep atom structure thought cooperativeThis research involves the students of class X4 SMA N 3 Gorontalo of in academic year 2008/2009. with cooperative learning model jigasaw type thats have purpose for increasing study result of students class X4 in subject of atom strukture.Based in classroom action prosedure, analysis and reflection on action hypothesis testing doing in a stage. And continuous that is on every ending activities from every cycle. 85 students who on observation paper minimal reach the nice category. The students achievement in cycle I, from 32 students there are 18 students who get more than (6,9), and 14 students get less that (6,9) with the average (6,74), while in the cycle II is improve where 32 students there are 28 students (87,5) get more than 6,9 and students get less than 6,9 with the average 8,0 and the average of applicapibility 82,75. Based on the students achievement in apply of cooperative learning model jigsaw type in structure atom can be improve the students achievement, so the hypothesis in this research is valid.
ELEKTRODA PEMBANDING (REFERENCE ELECTRODE) DAN KARAKTERISASINYA DALAM ELEKTROANALISIS Widarti, Hayuni Retno
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

Elektroda pembanding mempunyai potensial yang sudah tertentu, diketahui dengan pasti dan tidak mempengaruhi larutan sampel. Elektroda pembanding sebagai salah satu instrumen dalam analisis secara elektrokimia mempunyai peranan yang penting disamping elektroda indikator. Berdasarkan jenisnya dibedakan atas elektroda pembanding primer dan sekunder. Pemilihan dan pemakaian jenis elektroda pembanding sangat diperlukan terutama bagi para peneliti yang menggunakan instrumen atau metode analisis secara elektrokimia seperti potensiometri, polarografi, konduktometri, dan lain sebagainya.
MENINGKATKAN HASIL BELAJAR SISWA PADA MATERI STRUKTUR ATOM MELALUI MODEL PEMBELAJARAN KOOPERATIF JIGSAW KELAS X1 SMA NEGERI 3 GORONTALO Angkareda, Sermiati; Lukum, Astin; Paendong, Evie
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

The title of classroom action research is Improving the achievement of concep atom structure thought cooperativeThis research involves the students of class X4 SMA N 3 Gorontalo of in academic year 2008/2009. with cooperative learning model jigasaw type thats have purpose for increasing study result of students class X4 in subject of atom strukture.Based in classroom action prosedure, analysis and reflection on action hypothesis testing doing in a stage. And continuous that is on every ending activities from every cycle. 85 students who on observation paper minimal reach the nice category. The students achievement in cycle I, from 32 students there are 18 students who get more than (6,9), and 14 students get less that (6,9) with the average (6,74), while in the cycle II is improve where 32 students there are 28 students (87,5) get more than 6,9 and students get less than 6,9 with the average 8,0 and the average of applicapibility 82,75. Based on the students achievement in apply of cooperative learning model jigsaw type in structure atom can be improve the students achievement, so the hypothesis in this research is valid.
PERTUMBUHAN KAPANG MONASCUS PURPUREUS DALAM PEMBUATAN ANGKAK PADA MEDIA NASI DAN BERAS Saraswati, Dian
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

Penelitian ini bertujuan yaitu untuk melihat pertumbuhan terbaik dari kapang Monascus purpureus dalam pembuatan angkak pada media nasi dan beras.Metode yang digunakan dalam penelitian ini adalah penelitian non parametrik, dengan uji Tanda yaitu didasarkan pada tanda positif atau negatif bagi selisih nilai pengamatan pada setiap pasangan sampel. Hasil penelitian yaitu untuk uji dua pihak, probabilitasnya p=2 (0,0898)= 0,1796 nilai ini lebih besar dari taraf nyata 0,05 sehingga tidak terdapat perbedaan antara media nasi dan beras pada pertumbuhan jamur Monascus purpureus dalam pembuatan angkak
PANDANGAN GURU PAMONG TERHADAP PELAKSANAAN PROGRAM PENGALAMAN LAPANGAN (PPL) DI SMP DAN SMA SE GORONTALO Paramata, Dewi Diana
Jurnal Entropi Vol 2, No 2, 2007
Publisher : Jurnal Entropi

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Abstract

the Research which entitling View of Teacher of the field experience learning execution program ( PPL) in Yunior and Senior High School in Gorontalo aim to give the input substance like PPL execution pattern to repair the execution PPL for all which concerned, so the PPL execution program that really effective for the forming of teacher candidate and or professional in education, so that this research is expected useful to student of college which will do the activity PPL yet to be unlimber as good as possible in face of PPL execution program and as input to UPT PPL for the repairing of PPL execution program. Method which used is descriptive method. As additional data, use direct interview with headmasters. The Result of research indicate that the View of Teacher of the field experience learning execution program ( PPL) generally is goodness, this is shown by the analysis of data and diagram where the View of Teacher of the field experience learning execution program ( PPL) for every indicator around about: agree, often, and even. So also with the headmaster view that basically the PPL execution program has good and every year it was improvement, but because of change and growth of learning system in school hence oblige the student of college always to follow it so they really prepared to execute PPL.
NALISIS PROTEIN IKAN NIKE ASAL GORONTALO Kadir, Nurlaela Abd.; Bialangi, Nurhayati; Ischak, Netty
Jurnal Entropi Vol 2, No 2, 2007
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Abstract

Penelitian ini merupakan suatu eksperimen laboratorium yang bertujuan untuk menganalisis protein yang terdapat dalam ikan Nike. Penetuan kadar protein yang dihitung adalah persen nitrogen total, kemudian dikalikan dengan faktor konversi, hingga didapat kadar protein kasar pada ikan Nike yang dianalisis. Penelitian ini dilanjutkan dengan melakukan identifikasi adanya asam amino melalui metode Kromatografi Kertas. Hasil penelitian menunjukkan perbedaan kadar protein pada ikan Nike dari hari pertama dan hari Terakhir kemunculannya. Kadar protein kasar pada ikan Nike hari pertama yaitu 2,7315 % sedangkan pada hari terakhir yaitu 4,083 %. Hasil identifikasi diduga di dalam ikan Nike terdapat asam-asam amino esensial yaitu Leusin, Isoleusin, Metionin dan Threonin.

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