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Ivandini Tribidasari A.
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Makara Journal of Science
Published by Universitas Indonesia
ISSN : 23391995     EISSN : 23560851     DOI : https://doi.org/10.7454/mss
Core Subject :
Makara Journal of Science publishes original research or theoretical papers, notes, and minireviews on new knowledge and research or research applications on current issues in basic sciences, namely: Material Sciences (including: physics, biology, and chemistry); Biochemistry, Genetics, and Molecular Biology (including: microbiology, physiology, ecology, taxonomy and evolution); and Biotechnology.
Arjuna Subject : -
Articles 880 Documents
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PENDETEKSIAN JENIS DAN KELAS AROMA DENGAN MENGGUNAKAN METODE ONE-VS-ONE DAN METODE ONE-VS-REST
Makara Journal of Science
Publisher : UI Scholars Hub

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Aroma classification using one-vs-one and one-vs-rest methods. Computational Intelligence used in pattern classification problem can be divided into two different parts, one based on Neural Network and the other based on Statistical Learning. The Statistical Learning discovered by Vapnik on 70-est decade. For the pattern classification, Vapnik developed hyperplane optimal separation, which is known as Support Vector Machines Method (SVM). In the beginning, SVM was designed only to solve binary classification problem, where data existing are classified into two classes. To classify data whose consist of more than two classes, the SVM method can not directly be used. There are several methods can be used to solve SVM multiclasses classification problem, they are One-vs-One Method and One-vs-Rest Method. Both of this methods are the extension of SVM binary classification, they will be discussed in this article so that we can see their performance in aroma classification process. Data of aroma used in this experiment is consisted of three classes of aroma, each of them has six classes. The division of this class is based on alcohol concentration mixed into each of those aromas. For example, for aroma A, there are six kinds of aroma A with different alcohol concentration: 0%, 15%, 25%, 30%, 45% and 75%. The performance of these methods is measured based on their ability to recognize and classify aroma, precisely and match with the right class or variety of data existed.
BEBERAPA CATATAN FAUNA EKHINODERMATA DARI PERAIRAN TAPAK TUAN, ACEH SELATAN NANGROE ACEH DARUSSALAM
Makara Journal of Science
Publisher : UI Scholars Hub

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Notes On The Echinoderm Fauna Of The Tapak Tuan Bay Waters, Aceh Selatan The Nangroe Aceh Darussalam. A total of 21 species of echinoderms, belonging to of 5 species Holothuroidea, 5 species of Asteroidea, 4 species Echinoidea and 7 species Ophiuroidea have been found in the Tapak Tuan of Aceh Selatan. The Ophiuroidea were relatively dominant in the sea grass zone. On the basis of population density, Ophiuroidea was the dominant group and relatively highest in the individual density. In general, the number of species of echinoderm fauna is smaller than that in the Sekotong Lombok Barat bay waters. The species composition, community structure, zonation, and spatial distribution of echinoderm fauna are discussed in this paper.
KANDUNGAN TOTAL ZAT PADAT TERSUSPENSI (TOTAL SUSPENDED SOLID) DI PERAIRAN RAHA, SULAWESI TENGGARA
Makara Journal of Science
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Total Suspended Solid Content in Raha Waters, Northeast of Celebes. Measurement on Total Suspended Solid (TSS) in Raha waters were carried out in May 2001. The results showed that the content of total suspended solid varied between 74,8 – 78,9 ppm with averages content is 76,5 ppm. This content is still suited to the threshold value stated by government decree in 1988 for fishery and sea conservation park, but not suitable for recreation (swimming, diving activity).
KANDUNGAN LOGAM BERAT Pb, Cd, Cu, Zn DAN Ni DALAM AIR LAUT DAN SEDIMEN DI MUARA SUNGAI MEMBRAMO, PAPUA DALAM KAITANNYA DENGAN KEPENTINGAN BUDIDAYA PERIKANAN
Makara Journal of Science
Publisher : UI Scholars Hub

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Heavy Metals Content Pb, Cd, Cu, Zn And Ni In Sea Water And Sediment In Membramo Estuary And Its Relationship With Fishery Cultivation. Obervation on heavy metals Pb, Cd, Cu, Zn and Ni content in Jakarta Bay were carried out in August 2003. The results showed that the Pb, Cd, Cu, Zn, and Ni content still in line with threshold value stated by for fisheries. By the all, in sea water Zn content is higher compared to the others, while in sediment Ni is higher. This data showed the result show that on waters of Membramo River Zn and Ni waste than others elements.
STUDI KARAKTERISASI OPTIS LAPISAN TIPIS a-SiC:H HASIL DEPOSISI METODE GLOWDISCHARGE
Makara Journal of Science
Publisher : UI Scholars Hub

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Optical Properties of a-SiC:H Films Deposited by Glowdischarge Methods. The optical properties of amorphous silicon carbon films deposited by glowdischarge method have been studied using ultra violet-visible (uv-vis) spectroscopy. The refractive index was calculated by Swanepoel’s formula using transmission data then followed by numerical simulation. The films density tends to decrease with increasing carbon content. The widening of the optical gap by increasing carbon content indicates the enhancement of film’s transparence. Both real and imaginary parts of the dielectric constant show variation in magnitude as the carbon content increase
ISOLASI DAN KARAKTERISASI SENYAWA KIMIA DARI EKSTRAK n-HEKSAN KULIT BATANG Garcinia rigida Elya, Berna
Makara Journal of Science Vol. 7, No. 2
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Garcinia rigida, stogmasterol, triterpen, oleanolic acid.
ISOLASI DAN IDENTIFIKASI FLAVONOID PADA DAUN KATU (Sauropus androgynus (L.) Merr) Wijono, Sri Harsodjo
Makara Journal of Science Vol. 7, No. 2
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Isolation and Identification of Flavonoid in Katu Leaf (Sauropus androgynus (L.) Merr. Flavonoids in 95% ethanol extract of katu leaf were isolated using Charaux-Paris method. Extract of 95 % ethanol was fractionated with chloroform, ethyl acetate and three times with n-butanol. Flavonoids to be isolated from n-butanol I fraction by chromatography paper preparative method, and identified by spectrophotometer UV (Ultra-Violet) and infrared. Six flavonoids were isolated, one of flavonoids identified as rutin, and the other five were flavonol OH-3 conjugated or flavon groups.
PENGARUH MUSIM TERHADAP PLANKTON DI PERAIRAN RIAU KEPULAUAN DAN SEKITARNYA Thoha, Hikmah
Makara Journal of Science Vol. 7, No. 2
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Seasonal influenzed on plankton of the waters around Riau islands. The observation was conducted during April - May 2002. This study was done in relation with observation on environment quality of the waters around Riau Islands. The parameter observed were focus on the plankton communities for tweentyfives points of stations which were grouped into two zone based on the distance of the each station. Plankton abundance varied with location groups from 50- 90 % respectively. Community structure was dominated by the group of diatoms such as Chaetoceros, Dytilum, Nitzschia, Thalassionema, Thalassiothrix and the genus Ceratium (the group of Dinoflagellata). Community structure of zooplankton was dominated by the group of Copepods (45 – 90 %) and Polychaeta, Chaetognata, Bivalvia, Gastropods and Oikopleura (more than 90 %). The results describe the relationship between the water environmental condition and variation of plankton condition
EFFECTS OF PROTEIN-ENERGY MALNUTRITION ON THE IMMUNE SYSTEM Amir, Mellova Amir
Makara Journal of Science Vol. 7, No. 2
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Abstract

Protein-Energy Malnutrition (PEM) is believed to lead to an increased susceptibility to infection, or cause impaired immunity. Infection, occurring with malnutrition, is a major cause of morbidity in all age groups and is responsible for two-thirds of all death under 5 yr of age in developing countries. Many cells of the immune system are known to depend for their function on metabolic pathways that employ various nutrients as critical factors. The most consistent changes in immune competence in PEM are in cell-mediated immunity, the bactericidal function of neutrophils, the complement system, the secretory immunoglobin A, and antibody response
PEMANTAUAN KONDISI HIDROLOGI DI PERAIRAN RAHA P. MUNA SULAWESI TENGGARA DALAM KAITANNYA DENGAN KONDISI TERUMBU KARANG Edward, Edward; Tarigan, Z
Makara Journal of Science Vol. 7, No. 2
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Monitoring On Hydrology Condition In Raha Waters Muna Island and Its Relation to Coral Reef Condition. Monitoring on hydrology condition in Raha waters Muna Island, Southeast of Sulawesi were carried out on May and June 2001. The results showed that the temperature vary between 27.80-30.39 oC, salinity between 30.0-32.9 ppt, suspended solid between 70-80 ppm, transparency between see bottom – 8,5 m, nutrient phosphate between 0.13-1.79 mg/l, nitrate between 0.20-2.66 mg/l, dissolved oxygen between 3,68-4.53 ppm, and pH between 7.4-8.2. The values are still good for coralreef growth and development, and still in good agreement with government criteria for miscellaneous purpose. The variation of hydrology condition is not the caution of coral reef damage in Raha waters.

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