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Sainstek
Published by Universitas Negeri Gorontalo
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Core Subject : Education,
Education
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Articles 179 Documents
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EPIDEMI DEMAM BERDARAH DENGUE (DBD) DENGAN TRANSMISI VERTIKAL Achmad, Novianita
Sainstek Vol 2, No 3, 2007
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Abstract

Tulisan ini menjelaskan suatu model penyebaran penyakit Demam Berdarah Dengue (DBD) dengan melibatkan transmisi vertikal pada vektor, selanjutnya akan dianalisa dinamik model tersebut yaitu menentukan titik kesetimbangan dan menganalisa kestabilannya.
MAX PLUS ALGEBRA FOR DYNAMIC ANALYSIS SYSTEM OF TRANSPORT NETWORK (Case Study of Trans Hulontalangi Gorontalo City Transport) ., Nurwan; Yahya, Lailany
Sainstek Vol 6, No 4, 2011
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Abstract

Petri nets and max plus algebra are a subclass of Discrete Event Systems (SED) that can determined and analyze the various properties of a system. Public transport is a very important community needs in urban life. Trans Hulontalangi bus is one of the transportation networks in the city of Gorontalo, held to address the problem of transport and reduce congestion. In this research constructed Petri net of transport lines trans Hulontalangi Gorontalo City, then conducted the study in the form max plus algebra. Number of place and transition of the Petri net is obtained respectively 14. Max plus algebra model is x(k +1) = Ax(k) , with ( ) 1 2 14 x(k) = x (k), x (k), , x (k) ' , and n n A Re .
PENINGKATAN KELARUTAN PENTAGAMAVUNON-0 DENGAN PENAMBAHAN TWEEN 80 Tuloli, Teti Sutriyati
Sainstek Vol 4, No 2, 2009
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Abstract

Dissolution of drug substance represent one of important conditions in pharmacy area especially in formulation of a drug form. If we like to reach the good imbibition, drug have to stay in the dissolve form, therefore dissolution speed represent the determinant of imbibition speed for the drugs of which difficult to dissolve. Pentagamavunon-0 represent the analogous of kurkumin owning dissolution very small in water. therefore needed an approach in the effort this improvement pentagamavunon-0 with the technique of addition by substance of nonionic surfactan tween 80. To know the ability tween 80 in improving dissolution pentagamavunon-0 done by test of dissolution pentagamavunon-0 with the filtration method in condensation tween 80 rate 3,82 x 10-3M; 7,63 x 10- 3M; 1,53 x 10-2M; 2,29 x 10-2M; 3,05 x 10-2M at temperature 37, 45, 60 C [0,5 C]. Statistic analysis which we used is Kruskal-Wallis H method continued with the Median test. Result of research show the existence of difference meaning of the result test dissolution pentagamavunon-0 at various rate tween 80 (Sig =0,27) and different temperature (Sig.= 0,05) with the highest dissolution pentagamavunon-0 at the addition tween 80 rate 3,82 x 10-3M. React between pentagamavunon-0 and tween 80 happened in exothermic (?H= -13,42554 kal / mole) and spontaniously (?F = - 4857,21; - 4378,66 ; and - 4138,72 kal / mole). Interaction that happened especially entangle the interaction of pattern physical induce pentagamavunon-0 by tween 80 and the solubilisation process happened in the later area palisade continued in the center misel.
ANALISIS KADAR ASAM LINOLEAT DAN ASAM LINOLENAT PADA TAHU DAN TEMPE YANG DIJUAL DI PASAR TELAGA SECARA GC-MS Kilo, Ahmad Kadir; Isa, Ishak; Musa, Weny JA
Sainstek VOL 06, NO 06, 2012
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Abstract

The purpose of this research is to measure Linoleic Acid and Linolenic Acid Level in Tofu and Fermented Soybean Cake through Gas Chromatography-Mass Spectrometry. This is a laboratory research that use tofu and fermented soybean cake from Telaga traditional market as the sample of research. Sample was extracted by using n-hexane to produce oil. Then, oil was hydrolyzed by using KOH liquid and H2SO4 as a catalyst to get the free fatty acid. Then, it was converted to metil ester by using CH3OH as a solvent and H2SO4 as a catalyst for the necessity of fatty acid analysis. This research used Gas Chromatography-Mass Spectrometry to identify Linoleic Acid and Linolenic Acid Level in the sample. The analysis result shows that the biggest component of metil ester in tofu and soybean cake are dominated by metil linoleic (metil 9.12-octadekadienoat) with percentage 55.25% and 27.08% for each. Mean, the linolenic acid in tofu and fermented soybean cake cannot be detected by GC-MS. It is caused by the fermentation time, high temperature during production and fermentation, and humidity in the sample. Therefore, a further research is necessary to investigate level of linolenic acid. In tofu and fermented soybean cake.
EVALUASI KESTABILAN FISIK KRIM TABIR SURYA DARI BAHAN ALAM YANG MENGGUNAKAN KOMBINASI SURFAKTAN ANIONIK DAN NONIONIK Tungadi, Robert
Sainstek Vol 6, No 3, 2011
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Abstract

Telah dilakukan uji kestabilan fisik krim tabir surya dari bahan alam yaitu rimpang kencur, rimpang temu giring dan daun teh yang diformulasikan dengan menggunakan surfaktan anionik (trietanolamin-stearat) dengan konsentrasi 0,5%, 1%, 1,5%, 2%, dan 2,5% yang dikombinasi masing-masing dengan surfaktan nonionik (span 60-tween60) dengan konsentrasi 2,5%, 2%, 1,5%, 1% dan 0,5%. Tujuan penelitian ini untuk mendapatkan formulasi krim tabir surya dari bahan alam tipe emulsi m/a yang paling stabil. Evaluasi yang dilakukan meliputi pengamatan perubahan organoleptis yaitu perubahan warna dan bau serta evaluasi kestabilan krim meliputi volume kriming, perubahan kekentalan dan ukuran tetes terdispersi serta inversi fase yang dilakukan sebelum dan setelah krim diberi kondisi penyimpanan dipercepat selama 12 jam secara bergantian pada 5o dan 35oC sebanyak 10 siklus. Hasil pengamatan organoleptis memperlihatkan terjadi perubahan warna dan bau pada kombinasi surfaktan anionik 2% dengan nonionik 1%, dan pada kombinasi surfaktan anionik 2,5% dengan nonionik 0,5%. Pengukuran kekentalan menunjukkan terjadi perubahan kekentalan sebelum dan setelah kondisi penyimpanan dipercepat. Analisis statistik menunjukkan adanya pengaruh yang nyata konsentrasi kombinasi surfaktan anionik-nonionik terhadap kekentalan krim tetapi menunjukkan pengaruh yang tidak nyata terhadap ukuran tetes terdispersi. Hasil pengamatan menunjukkan tidak adanya volume kriming dan inversi fase pada semua formula krim. Krim tabir surya tipe emulsi m/a yang paling stabil adalah krim dengan kombinasi surfaktan anionik 1,5% dan surfaktan nonionik 1,5%. The study concerning the pyhsical stability test of sunscreen cream from natural sources i.e Kaempheriae Rhizoma, Curcumae Heyneanae Rhizoma and Theae Folium which formulated with using anionic surfactan (Triethanolamin-stearic) at 0.5%. 1%. 1.5%, 2% and 2.5% and combined with nonionic surfactant t 2.5%, 2%, 1.5%, 1% and 0.5% respectively. The aim of this research were to get the most stable o/w type emulsion sunscreen cream formulation from natural sources. Cream evaluation including organoleptic changes in colour and odor, and also physical stability of cream i.e creaming volume, viscosity changes, droplets dispersed size changes and phase inversion were evaluated before and after stress condotion which was conducted between 5oC and 35oC alternately, every 12 hours for 10 cycles. The organoleptic observation indicated that there were changes of colour and odor from cream within combination anionic surfactant at 2% nonionic surfactant at 1% and combination anionic surfactant at 2.5% nonionic surfactant at 0.5%. The measurement of viscosity showed there were viscosity changes before and after stress condition. The statistical analysis showed there were significantly different of combination anionic-nonionic surfactant concentration toward the viscosity of cream, but showed unsignificantly different toward the dispersed droplets size. The observation showed there was not creaming and phase inversion to all of the cream. The most stable o/w type emulsion of sunscreen creams were cream using combination of anionic surfactant 1.5% and nonionic surfactant 1.5%.
MENENTUKKAN DISTRIBUSI SUHU PADA PELAT YANG BERBENTUK PERSEGI EMPAT DENGAN MENGGUNAKAN PENDEKATAN METODE BEDA HINGGA TERHADAP PERSAMAAN LAPLACE. Yunginger, Raghel
Sainstek Vol 3, No 1, 2008
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Abstract

Formulasi matematik dari kebanyakan permasalahan dalam ilmu fisika dan teknologi dapat dipresentasikan dalam bentuk persamaan diferensial parsial (PDP). Persamaan tersebut merupakan laju perubahan terhadap dua atau lebih variable bebas yang biasanya adalah waktu dan jarak. Hukum-hukum fisika biasanya didasarkan pada persamaan-persamaan empiris yang menjelaskan perubahan sifat fisis dan keadaan sistem. Keadaan sistem fisis biasanya dinyatakan dalam bentuk perubahan spasial dan temporal. Persamaan yang merupakan gabungan suatu fungsi yang tidak diketahui serta turunannya disebut persamaan diferensial. Banyak fenomena fisis diformulasikan secara matematik dalam persamaan diferensial, diantaranya menentukkan distribusi suhu pada pelat yang berbentuk persegi empat dengan menggunakan pendekatan metode beda-hingga terhadap persamaan laplace. Dari hasil pengkajian menunjukkan bahwa data perhitungan distribusi suhu pelat persegi empat setiap waktu menunjukkan hasil yang sesuai dengan perkiraan.
MODELING STRUKTUR PROTEIN VAKSIN H5N1 HA BTB MENGGUNAKAN I-TASSER Amelia, Fitri
Sainstek VOL 07, NO 01, 2013
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Abstract

Modeling protein Hemagglutinin virus Influenza A (H5N1 2/2005) telah dilakukan menggunakan server I-TASSER. Model yang didapatkan adalah 5 rancangan struktur tersier protein menggunakan template 2wr0 dan 2wr1. Kualitas struktur protein diukur berdasarkan geometri antar residu dengan residu lainnya dan geometry total struktur. Hasil analisis statistika Ramachandran didapatkan bahwa protein Model 2 merupakan model terbaik karena memiliki 86,2% residu yang berada pada most favored region, 11, 2% pada additional allowed region, 1,8% pada generously allowed region, dan 0,8% pada disallowed region.
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
PENGARUH PEMBERIAN TEPUNG IKAN PAYANGKA TERHADAP KADAR KALSIUM TULANG TIKUS PUTIH Anasiru, M Anas
Sainstek Vol 6, No 2, 2011
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Abstract

More less 99% from overall our body calcium resides in in bone and tooth. when does blood calcium degree go down under normal, body take it from bone to fill it again. along with getting old, system balance begins disturbed. Bone loses quicker calcium membanding the ability to fill to return. in general can we say that osteoporosis happen moment bone cells smashing function dominanter membanding bone cells formation function. Osteoporosis well-being problem the insident more will increase along with increase it average age advanced person age. In general this watchfulness aims to detect fish meal gift influence payangka (ophieleotris aporos) (ophieleotris aporos) towards bone calcium degree in white mouse (rattus novergicus strain wistar). This watchfulness kind true experiment designs uses pretest-postest with control group designs, done towards 16 mouses putph (rattus norvegicus galur wistar) as animal tries. sample taking uses complete random plan method. Data that gatherred mouse woof that consist of four groups that is group a shaped woof pars + whole-wheat, group b shaped woof pars + maize flour, group c shaped woof pars + maize flour + fish meal payangka (10 g), and group d shaped woof pars + maize flour + fish meal payangka (20 g); with mouse body heavy development data. to detect to what there fish meal gift influence payangka (ophieleotris aporos) towards white mouse bone calcium degree (rattus norvegicus galur wistar) is used statistics test one way annova, with belief level 99%. Bone calcium degree analysis attributes that found real influence (p
PENGETAHUAN SIKAP DAN PERILAKU MASYARAKAT TERHADAP INSIDEN DEMAM BERDARAH DENGUE DI KELURAHAN BIAWA O, KELURAHAN LIMBA U.1 DAN KELURAHAN SIENDENG KECAMATAN KOTA SELATAN Daud, Rustam K.
Sainstek Vol 5, No 3, 2010
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Abstract

Peoples behavior of 2010 Health Indonesia expected is proactive to maintain and improve health in preventing incidence of disease, to protect our selves of threat of disease and to participate actively in movement of people effort. Therefore, it need knowledge of people early concerning danger of fever and effort of preventing this disease. Objective of this research was to know how do and to identify the Effect of Knowledge, Attitude, Behavior of Peoples on Dengue Haemorrhagic Fever at Sub District Biawa O, Limba U.1 and Siendeng District Kota Selatan City of Gorontalo.The research method that was used in this research was description with cross sectional study and with respondences 150 peoples. Data analyzed used variables stated by distribution of frequency either in absolute value or percentage in estimation using formulation of Machfoedz, I, (2004 : 15).For respondent of Sub District Biawa O, knowledge level has less category (54%), attitude level has less category (54,2%), and behavioral level in practice/action has less category (53%). For respondent of Sub District Limba U.1, knowledge level has less category (54,4%), attitude level has less category (54,3%), and behavioral level in practice/action has less category (54,4%). For respondent of Sub District Siendeng, knowledge level has good category (79,7%), attitude level has good category (94%), and behavioral level in practice/action has good category (80%). Knowledge, attitude, and behavioral of peoples at sub district Biawa O, Limba U.1 has less category and Siendeng has good category. Knowledge, attitude, behavioral of respondents had the effect on Dengue Haemorrhagic Fever Incident. Better knowledge, attitude and behavioral of respondents, lower chance of incident in this disease. Keywords : Dengue Haemorrhagic Fever, Educational Factor, Knowledge, Attitude and Behavior of Peoples

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