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Natural Science: Journal of Science and Technology
Published by Universitas Tadulako
ISSN : 25411969     EISSN : 23380950     DOI : -
Core Subject : Science,
Computer Science & IT
Jurnal Natural Science online diterbitkan oleh Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) Universtas Tadulako. Jurnal ini menerbitkan artikel-artikel ilmiah hasil penelitian dalam bidang-bidang ilmu pengetahuan dan teknologi.
Arjuna Subject : -
Articles 12 Documents
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Search results for , issue "Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)" : 12 Documents clear
RASIONALITAS PENGGUNAAN ANTIBIOTIK PADA PASIEN INFEKSI SALURAN KEMIH (ISK) DI INSTALASI RAWAT INAP RSUD UNDATA PALU TAHUN 2012 Febrianto, Aldu Wijaya; Mukaddas, Alwiyah; Faustine, Inggrid
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

ABSTRACT Urinary Tract Infection (UTI) is a bacterial infection of urinary tract that antibiotic was the first step on therapy. Antibiotic usage at hospitalized patients in developing country is 30-80%, but from all of that 20-65% antibiotic usage was considered inappropriate. It can raise resistance symptoms. This research is aimed to find out the rational of antibiotics usage including right indication, drug, dosage, frequency and duration in UTI patients. This research was  descriptive research which was done retrospectively by looking at medical records of UTI patients, in order to explain or to illustrate the characteristics of each of the variables on this study including: patient characteristics, clinical characteristics and rationality of drug usage. The outcome of this study were as follow: Rationality treatment was 96.5 % in precise indications, right drug was 66.7%, right dosage was 53%, right frequency of antibiotic was 53%, and appropriate duration of antibiotic usage was 49.4 % . The use of antibiotic on UTI patients at Undata Palu Hospital in 2012, it could not be clasified as  rational use yet.
KAJIAN PENGGUNAAN ARANG AKTIF TONGKOL JAGUNG SEBAGAI ADSORBEN LOGAM PB DENGAN BEBERAPA AKTIVATOR ASAM Alfiany, Herlin; Bahri, Syaiful; Nurakhirawati, Nurakhirawati
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Research on the activated charcoal, by some acid activators, as an Pb adsorbent has been done. Corncobs as agricultural waste having a huge potential as a material in activated charcoal. It because of easily to be obtained, but also it is containing high levels of elemental carbon (43.42 %) and hydrogen (6.32 %) which calorific value ranging between 14.7 - 18.9 MJ/kg. This study aimed to determine the effect of acid activation on waste corncobs and the levle of lead (II) absorption. Corncob charcoal were activated by soaked for 24 hours in nitric acid and hydrochloric acid. The results showed that the absorption of iodine on activated charcoal by hydrochloric acid (HCl) was 773.85 mg/g , by sulfuric acid (H2SO4) was 665.76 mg/g and by nitric acid (HNO3) was 637.82 mg/g. Charcoal of 14 g had the best absorption (0.508 ppm) compare to other treatments. The best absorption capacity (23.80 % ) was found in 12 grams of charcoal.
PRODUKSI BIOGAS MENGGUNAKAN CAIRAN ISI RUMEN SAPI DENGAN LIMBAH CAIR TEMPE Ihsan, Arsul; Bahri, Syaiful; Musafira, Musafira
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

This study aimed to determine the effect of ratio of liquid cow contents with tempeh wastewater and fermentation time on biogas production. The research was conducted using a completely randomized design  (CRD) with 7 point ratio variation cows rumen fluid contents with liquid wastewater tempe  (0:100, 5:95, 10:90, 15:85, 20:80, 25:75 and 100:) and fermentation time consisted of 12, 24, 36, 48, 60, 72, 84 and 96 hours. Each treatment was repeated twice. From the results obtained it turns out the highest content of biogas at a ratio of biogas yield of 2894,35 mg/L. Which produces biogas fermentation time the highest yield for 84 hours. Positive test the presence of mhetane in the biogas shown with the blue flame in the flame test.
MENGKAJI MODEL PENGENDALIAN POPULASI AEDES AEGYPTI DENGAN SIT DAN KOMBINASI SIT DAN INSEKTISIDA Wati, Indra; Ratianingsih, Rina; Jaya, Agus Indra
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Salah satu penyakit yang diakibatkan oleh gigitan Aedes aegypti adalah Demam Berdarah Dengue (DBD). Pencegahan penyakit ini menjadi prioritas global karena dapat berakibat kematian pada penderita. Untuk menekan jumlah penderita Demam Berdarah Dengue (DBD) maka dilakukan suatu program yang dapat mengendalikan populasi Aedes aegypti. Teori optimal kontrol diterapkan pada model populasi Aedes aegypti sebagai metode pengendalian secara matematika dengan menerapkan Prinsip Maksimum Pontryagin.Secara biologi, metode pengendalian yang digunakan adalah Sterile Insect Technique (SIT), yang  merupakan teknik pengendalian dengan memberikan mutagen atau radiasi gamma pada nyamuk jantan sehingga menjadi steril. Nyamuk steril inilah yang nantinya akan dilepaskan ke lingkungan untuk kawin dengan nyamuk normal sehingga nyamuk normal akan menjadi steril. Hasil penelitian menunjukkan bahwa program Sterile Insect Technique (SIT) hanya bersifat mensterilkan dan tidak menekan jumlah populasi nyamuk. Untuk itu penelitian ini membahas kombinasi program Sterile Insect Technique (SIT) dan Insektisida yang merupakan teknik pengendalian secara kimia. Hasil penelitian menunjukkan bahwa kombinasi programSIT dan Insektisida dapat membasmi populasi nyamuk dengan baik.
MODEL MATEMATIKA UNTUK SISTEM EVAKUASI TSUNAMI KOTA PALU (SET-KP) BERBASIS JALUR TERPENDEK DAN WAKTU EVAKUASI MINIMUM Sudarsana, I Wayan; Mendi, Sulistiawati; Abdullah, Abdullah; Hendra, Andi; Sahari, Agusman
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Kota Palu memiliki tingkat resiko tinggi terhadap ancaman gempa bumi dan tsunami karena terletak dalam Sabuk Gempa Pasifik dan bentangan sesar Palu Koro. Kriteria InaTews waktu yang tersedia untuk evakuasi setelah peringatan dini tsunami berbunyi adalah 15 menit. Evakuasi penduduk dari pesisir pantai kota Palu ke tempat aman merupakan tindakan yang harus dan segera dilakukan sebagai langkah penyelamatan bila terjadi tsunami. Informasi tentang tempat, jalur terpendek, dan waktu tempuh minimum untuk evakuasi memainkan peranan yang sangat penting dalam keselamatan penduduk yang akan dievakuasi. Pada penelitian ini telah dihasilkan sebuah perangkat lunak Sistem Evakuasi Tsunami untuk kota Palu (SET-KP) berbasis jalur terpendek dan waktu evakuasi minimum. Penentuan jalur terpendek dalam SET-KP menggunakan algoritma Dijkstra dan menghitung waktu evakuasi minimumnya menggunakan model matematika . Skenario evakuasi penduduk di semua cluster pesisir kota Palu menggunakan perangkat lunak SET-KP diperoleh bahwa cluster dengan jumlah penduduk cukup banyak waktu evakuasinya melebihi ketentuan InaTews. Sementara itu, cluster dengan jumlah penduduk sedikit ketentuan InaTews dapat dipenuhi, seperti cluster C70, C76 dan C79. Oleh karena itu, shelter (titik evakuasi) yang telah didefinitifkan sebelumnya dalam dokumen BPBD perlu direposisi untuk memenuhi ketentuan InaTews.
KAJIAN KADAR FENOLAT DAN AKTIVITAS ANTIOSIDAN JUS KULIT BUAH SEMANGKA (CITRULLUS LANATUS) Ismayanti, Ismayanti; Bahri, Syaiful; Nurhaeni, Nurhaeni
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

This research aim to determine rate of total phenolic and activity of antioxidant of ellipse and circular watermelon peel juice. Method which used in examination of rate total phenolic that is method of Folin_Ciocalteu and activity of antioxidant use method of DPPH. Result of which is obtained from examination rate of phenolic circularwatermelon peel heavily 1,4 kg is 18,702% and ellipse watermelon peel heavily is 1,9 kg is 19,168%. Activity of antioxidant with value of IC50 of circular watermelon 214,369 ppm and ellipse watermelon 376,266 ppm. Base on value of IC50, both of sample that mentioned appertained weak antioxidant.
STANDARISASI EKSTRAK ETIL ASETAT KAYU SANREGO (LUNASIA AMARA BLANCO) Anam, Syariful; Yusran, Muhammad; Trisakti, Alfred; Ibrahim, Nurlina; Khumaidi, Ahmad; Ramdanil, Ramdanil; Zubair, Muhammad Sulaiman
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Lunasia amara Blanco is a popular medicinal plant which is known as aphrodisiac in South Sulawesi Province. Biological activity as antibacterial, anticancer dan antituberculosis were also scientifically reported. This study is to ascertain the safety and quality of the plant extract by standardization procedures mentioned in literature, including specific and non-specific parameters. The result showed that ethyl acetate wood extract of L. amara Blanco, which is brown viscous extract, astringent to the taste and characteristic odor, contain water-soluble extractive matters of 23,95 ± 2,192 %, ethanol-soluble extractive matters of 67,05 ± 3,61 %, water content of 5,33 ± 0,407 %,  total ash content of 0,65 ± 0,199 %, acid-insoluble ash content of 0,58 ±0,225 %, density of 0,7734 ± 0,0016 (5%) and 0,7957 ± 0,0021 (10%), total contaminant number of bacteria and fungus of each < 1 x 104 colony/g, and Pb concentration of 10,59 ± 0,239 mg/kg. Ethyl acetate wood extract of L. amara Blanco has been qualified as standardized extract. Therefore, this study can be a reference for identification and control quality of the extract as a herb-medicine material
PEMANFAATAN LIMBAH TONGKOL JAGUNG (ZEA MAYS) UNTUK PRODUKSI BIOETANOL MENGGUNAKAN SEL RAGI AMOBIL SECARA BERULANG Indriany, Dewi; Mappiratu, Mappiratu; Nurhaeni, Nurhaeni
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Study about the Utilization of corn cob waste (Zea mays) for Bioethanol production using immobilized yeast cells repeated used has been done. The aim of this research was to find both the ratio of sulfuric acid to corn cob wheat and the hydrolysis time in order to get the high sugars content, and to know the activity of the immobilized yeast cell for alkohol content during repeated use. It was done by apply  5 levels of surfuric acid (50%) ratio to corn cob wheat and 5 levels of hydrolysis. It was 1 : 1 (A), 2 : 1 (B), 3 : 1 (C), 4 : 1 (D), and 5 : 1 (E) based on v/b and 0,5; 1;  1,5;  2; and 2,5 hours respectively. The result showed that the best ratio of sulfuric acid to corn cob wheat was 5 : 1 (v/b), it produced the sugars content for about 41,63%. While the best hydrolysis time was 1,5 hours and it gaved 43,75% of sugars content. The sugar Fermentation was done in 48 hours. The activity of immobilized yeast cell using sulfuric acid hydrolysis product getting decreased in repeated used, and there was no alcohol producted at the fourth time of immobilized yeast cell used.
FORMULASI KRIM ANTIOKSIDAN EKSTRAK ETANOL BAWANG HUTAN (ELEUTHERINE PALMIFOLIA L. MERR) Sharon, Nela; Anam, Syariful; Yuliet, Yuliet
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Eleutherine palmifolia L. Merr having antioxidant activity, its because of contain flavonoid, fenolat and tanin. These compounds have effect in  preventing of free radical which cause premature aging. Research on ethanol extract of E. palmifolia L. Merr which formulated into antioxidant cream have been done by applying variation of TEA emulgator and stearic acid. That variation  were F1 (2% : 6%), F2 (3% : 12%) and F3 (4% : 18%). Determination of antioxidant activity  was done based on DPPH methode, and the Value is 98,210%. Furthermore, evaluation on  physical characteristics was done based on organoleptic test, homogenity, pH, viscosity and stability of cream preparation. Observation was done during 21 days. Obtained data were then analyze by student-t test in comparing of the value between fresh and 21 days after storage. the pH of cream F1, F2 and F3 were not showed significant decrease, while DPPH reduce percent of F1, F2 and F3 were showed significant decrease.  In contrast, viscosity of cream F3 was significant decrease. Antioxydant activity extract based on DPPH reduce percent value of F1, F2, F3 at the first day were 96,822%, 97,123% and 96,896%, respectively. Whereas that value  at 21nd days after storage  were 89,036%, 89,726% and 90,564%, respectively.  Our result showed that E. palmifolia L. Merr ethanol extract  can be formulated as a cream preparations. F2 physical properties was  fullfill standart quality, which it was used TEA emulgator and stearic acid proportion of 3% : 12%.  
PEMANFAATAN LIMBAH SERBUK GERGAJI UNTUK PRODUKSI BIOETANOL MENGGUNAKAN SEL RAGI IMOBIL SECARA BERULANG Novianti, Novianti; Mappiratu, Mappiratu; Musafira, Musafira
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

Study about the Utilization of sawdust waste as a subtrat in Bioethanol production by using repeated-immobilized yeast cells has been done. The aim of this research was to determine the best ratio of sulfuric acid to sawdust and to determine the optimum hydrolysis time, its in order to get the highest sugars content and alkohol content, and also to know the activity of the immobilized yeast cell for in alkohol production by repeated-use of immobilized cell. It was done by applying  9 levels of sulfuric acid (50%) ratio to sawdust (v/b) {i.e. 2 : 1 (A), 3 : 1 (B), 4 : 1 (C), 5 : 1 (D), 6 : 1 (E), 7 : 1 (F), 8 : 1 (G), 9 : 1 (H) and 10 : 1 (I)}, and 5 levels of hydrolysis time (i.e. 0,5; 1;  1,5;  2; and 2,5) . The result showed that the best ratio of sulfuric acid to sawdust was 5 : 1 (v/b), it could produce the sugars content for about 43,52%. While the best hydrolysis time was 2 hours and it could gave 43,72% of sugars content, when the fermentation proceses was done in 72 hours. The activity of immobilized yeast cell was decreased in repeated-used system, and there was no alcohol can  produced in the fourth time of immobilized yeast cell used.

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