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Kota gorontalo,
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INDONESIA
Sainstek
Published by Universitas Negeri Gorontalo
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Core Subject : Education,
Education
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Articles 8 Documents
 1 
Search results for , issue "Vol4, No 3, 2009" : 8 Documents clear
KEMAMPUAN EKSTRAK BUAH MAKASAR (Brucea javanica L. Merr) SEBAGAI PENGHAMBAT BAKTERI Propionibacterium acnes INDUSER MEDIATOR INFLAMASI Widiyantoro, Ari; Khotimah, Siti; Mulyadi, Achmad; Usman , Thamrin
Sainstek Vol4, No 3, 2009
Publisher : Jurnal Sainstek

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Abstract

Propionibacterium acnes merupakan suatu induser mediator inflamasi yang banyak mengakibatkan timbulnya jerawat. Proses terjadinya jerawat diawali dengan tertutupnya folikel sebaseus oleh sel kulit mati sehingga menyebabkan akumulasi sebum. Sebum yang terakumulasi kemudian menjadi nutrisi bagi pertumbuhan bakteri Propionibacterium acnes. Bakteri ini akan menghasilkan metabolit yang memicu terjadinya inflamasi. Penelitian ini dilakukan untuk mendeteksi produksi ROS (reactive oxygen species) yang terjadi pada proses penghambatan bakteri Propionibacterium acnes oleh ekstrak buah Makasar (Brucea javanica L. Merr). Hasil penelitian menunjukkan fraksi etil asetat buah Makasar mempunyai aktivitas penghambatan yang tertinggi sebesar 85,56% 3,09 terhadap reduksi NBT dibandingkan ekstrak/fraksi dari buah Makasar lainnya namun masih dibawah kontrol positifnya yaitu vitamin C dan E. Kata Kunci : Propionibacterium acnes, Brucea javanica L. Merr, ROS, NBT
METODE PEMBUKTIAN TEOREMA CAYLEY PADA TEORI GRAPH Abdullah, Abdul Wahab
Sainstek Vol4, No 3, 2009
Publisher : Sainstek

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Abstract

This article describes two methods to prove Cayley Theorem in Graph Theory, through 1-1 corespondence between labelled tree - sequence and through Combinatorial Theory. Kata Kunci : Graph Theory, Combinatorial Theory, corespondence 1-1, labelled tree, Cayley Theorem
IDENTIFIKASI JENIS-JENIS GASTROPODA DI KAWASAN HUTAN MANGROVE DESA BULALO KECAMATAN KWANDANG KABUPATEN GORONTALO UTARA Latjompoh, Masra
Sainstek Vol4, No 3, 2009
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Abstract

Is this research about the problems of the types of gastropoda around the mangrove forest Bulalo Village, Kwandang with of Gorontalo District. This research purposed to find about the gastropoda types in mangrove forest Bulalo village Kwandang, North Gorontalo District. This research is descriptively using survey method. To find and know directly about data in location. So me using observation technique. To have a sample in this research, with taking all of the sample me find in exploration process with purposive sampling technique. Analysis of data using determination keys in zoology lab. biology Gorontalo State University. Kata Kunci : Gatropoda, Mangrove
MODEL PEMBELAJARAN KOOPERATIF TIPE STAD (STUDENT TEAM ACHIEVEMENT DIVISION) DALAM MEMAHAMI PEMBELAJARAN KIMIA DI SMA Rohayati, Nanay Aling
Sainstek Vol4, No 3, 2009
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Abstract

Rendahnya daya serap siswa pada pelajaran kimia di SMA terlihat dari hasil evaluasi belajar siswa. Banyak faktor yang menyebabkan hal tersebut salah satunya kondisi pembelajaran yang masih bersifat konvensional dan kurang menggali aspek kemampuan siswa. Proses pembelajaran masih didominasi oleh guru (teacher centered) dan kurang memberikan peluang bagi siswa untuk berkembang secara mandiri melalui belajar penemuan dan proses berpikirnya. Model Pembelajaran Kooperatif (Cooperative Learning) tipe Student TeamAchievement Division (STAD) merupakan salah satu model yang dapat meningkatkan kinerja siswa dalam tugas-tugas akademik pada pembelajaran kimia dan dapat bekerja sama dengan baik Kata kunci: Model pembelajaran kooperatif, tipe STAD, pembelajaran kimia
STUDI SERAPAN ION TIMBAL(II) OLEH BIOMASSA GANGGANG (HYDRILLA VERTICILLATA) DALAM AIR ., Bahrizal
Sainstek Vol4, No 3, 2009
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Abstract

In the present work, the process of lead-ion adsorption by H. verticillata biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for lead ion in water. A weight of 500 mg biomass was put ionto 300 ppm of the metal-ion solution whose pH varied from 4.0 to 6.0. Then, these solutions were stirred for 20 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.0, having adsorption value 14,867 mg/g. Capacity of lead-ion adsorption was obtained by varied concentration, yielded value of 24,490 mg/g. Key word: H. verticillata, biomass, adsorption, spectrometry
ANALISIS BENCANA LONGSOR DI DESA KALITLAGA KABUPATEN BANJARNEGARA PROVINSI JAWA TENGAH Nasibu, Rito
Sainstek Vol4, No 3, 2009
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Abstract

Banjarnegara is one of the sub-district in Central Java (a province in Indonesia) which is located in hazardous landslide area. There are some sub district which is located in high level hazardous landslide area: Karangkobar, Banjarnegara, Banjarmangu, Kalibening, and Madukara. Meanwhile, Kalitlaga, Purwonegoro, Pagentan, Susukan and Wanayasa is located in middle level hazardous landslide area. The kind of landslide in Kalitlaga is kind of curve debris flow which caused by sand stones movement on clay stones as slippery area. It makes the clay stones can not release the water instead it becomes slippery. The land used has to be planned by the society, so the plant which has been planted is not weight on the land. Societies awareness to do not construct the artificial recharge, because it can raise the ground water level and make the land unstable. A good drainase system has to be developed to reduce water absorption. The supplies of extensometer, a tool to measure landslide have to be increased and the government is expected to fund the supplying. Government and societies role are required in landslide disaster mitigation efforts in Kalitlaga Village, Pagetan, Banjarnegara Keywords: disaster area, landslide, extensometer.
PENETAPAN MERKURI (Hg) PADA SALURAN AIR LIMBAH RUMAH SAKIT ALOEI SABOE GORONTALO SECARA DIRECT MERCURY ANALYZER Isa, Ishak
Sainstek Vol4, No 3, 2009
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Abstract

Penelitian ini bertujuan untuk mengetahui kadar merkuri terlarut pada saluran pembuangan limbah dari poliklinik gigi rumah sakit Aloei Saboe Kota Gorontalo. Penetapan kadar merkuri dalam Sampel secara Direct Mercury Analyzer (DMA). Sampel yang dianalisis diambil pada tiga titik yaitu saluran poliklinik gigi (titik A), pada saluran umum/samping rumah sakit (titik B), dan jarak 100 meter dari titik B/samping SMA 1 Gorontalo (titik C). Hasil penelitian menunjukkan bahwa kadar merkuri pada Sampel air limbah rumah sakit berturut-turut pada titik A (1995 ppb), titik B (7115 ppb), dan titik C (1306 ppb). KATA KUNCI : DIRECT MERCURY ANALYZER, MERKURI
ANALISIS PERGESERAN FUNGSI LAHAN DI KECAMATAN KOTA UTARA KOTA GORONTALO. Tatura, Lydia Surijani
Sainstek Vol4, No 3, 2009
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Abstract

Since the Gorontalo Province was established as stated on the national law number 38 year 2000, the Gorontalo city become a part of the province area and became the capital of the new province. As the capital Gorontalo city, it has a strategic role that makes possible providing opportunity in developing economy, industry and trade, transportation services and other development sector. The growth and the development give positive impact to the development, but negative impact to the people and the natural resources. In the other side, that cause emerging of new environmental problems. The function of productive land as one of the people life resources mostly convert to other function as governmental building, trade building, people residence and other infrastructure. This research was conducted in Gorontalo city on the productive area in the 10 sub-subdistrict of the Kota Utara subdistrict. The physical area mapping used the Gorontalo city land unit map 1999 was compared to utility of the land after 10 years (2009). This research conducted by using descriptive methode. Primary data analisys uses descriptive methode with its results as tables, pictures, photos. The result of this research shows the productive land conversion in Kota Utara subdistrict + 102,178 Ha from field to kinds of industry utility, trading, residences, and public facilities. The reason of land function convertion, based on people perception, is city region government. In for utilizing the productive land, wich is based on the most important economic criteria, welfare, the increasing the city original income and investation . The environmental criteria with local priority, the most contaminated is residence sector, and for the natural resources and land availability are agricultural subsector. The conclusion of this research, that productive land function conversion in Kota Utara subdistrict arrange development area which is not suitable with the aim and the plan that stated on RTRW Gorontalo City 2001-2011. KEY WORD : Land Function, Convertion.

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