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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.
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Articles 11 Documents
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Search results for , issue "Vol. 8, No. 1" : 11 Documents clear
DOMINASI CYANOBACTERIA PADA MUSIM PERALIHAN DI PERAIRAN LAUT BANDA DAN SEKITARNYA Sediadi, Agus
Makara Journal of Science Vol. 8, No. 1
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Domination of Cyanobacteria at Transition Monsoon around Banda Sea Area. Banda Sea had affected by monsoon factor, this condition also influenced fitoplankton condition, but information about fitoplankton condition especially Cyanobacteria group still not complete yet. Therefore had done the researched about fitoplankton in October 1998 and November 1999, that months is regarded as vice of transition monsoon. Fitoplankton samples were taken from the surface to 200 m depth to known the abundant, composition, and distribution of Cyanobacteria. The results showed that the abundant of Trichodesmium erahtraeum varied between 0.02-1.2 x 102 coloni m-3, the highest vale found in 100 m depth and the lowest in 200 m depth. The abundance of Trichodesmium thiebautii varied between 0-8.8 x 102 cel m-3. Distribution of Trichodesmium erythraeum found until 50 m depth, their abundance high relative, this condition caused by nitrate concentration (r2 =28,30 %) and temperature (r2 =17,30 %). Based on their abundance, diversity, evenness and distribution Trichodesmium eryhtraeum dan Trichodesmium thiebautii dominated in transition monsoon.
STRUKTUR KOMUNITAS TERIPANG (HOLOTHUROIDEA) DI BEBERAPA PERAIRAN PANTAI KAI BESAR, MALUKU TENGGARA Yusron, Eddy; Widianwari, Pitra
Makara Journal of Science Vol. 8, No. 1
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Holothurian (Holothuroidea) Community Structure in Some Coastal Waters of Kai Besar Island, South-East Maluku. During October and November 1990 the holothurian community inhabiting littoral areas was assessed at five locations : Borang, Ohoiwait, Nuwahan, Wahadan and Kurit Wur. This involved five ecological indices: density, species richness, diversity, evenness and similarity. It was revealed that the holothurian community consisted of 14 species in which five among them occurred in all locations at higher densities: Holothuria edulis, H. scabra, H. nobilis, H. atra and Stichopus chloronatus. Small variations of the ecological indices at all locations may indicate that the community characteristics at the five locations were relatively similar.
PENAPISAN GALUR KEDELAI Glycine max (L.) Merrill TOLERAN TERHADAP NaCl UNTUK PENANAMAN DI LAHAN SALIN Yuniati, Ratna
Makara Journal of Science Vol. 8, No. 1
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Screening of Soybean Cultivars Glycine max (L.) Merrill under Sodium Chloride Stress Condition. Salinity is one of the most serious and widespread agricultural problems resulting in losses of yield. Generally, as land is more intensively cultivated, the salinity problem becomes more severe. A high concentration of NaCl greatly reduces growth of both the shoot and the root. One strategy available to cope with saline soil is to choose salt-tolerance crops or to select salt-tolerance cultivars within a crop. Experiments were conducted to asses the performance of ten cultivars soybean (Glycine max [L.] Merrill) to salt stress at germination and seedling stages. Salinity treatments were begun by adding 70, 80, 90, and 100 mM NaCl to the basal nutrient solution. According to germination percentage, fresh weight/dry weight ratios, and the percentage of dead apical buds we suggest that Wilis, Malabar and Sindoro were tolerant lines, Genjah Jepang, Lokan, and Tidar were moderate and the sensitive lines were Lumut, Yellow Biloxy, Si Cinang and Sriyono.
A NUMERICAL EXPERIMENT OF 50-DAY RESONANCE INDUCED BY INDIAN OCEAN KELVIN WAVE IN THE SULAWESI SEA Syamsudin, Fadli
Makara Journal of Science Vol. 8, No. 1
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A numerical ocean modeling study using spectral element method is used to simulate the Indian Ocean Kelvin wave propagation along the Makassar Strait and the Sulawesi Sea by giving a-prescribed-50-day Kelvin wave forcing in the northern mouth of the Lombok Strait. The least square fit analysis is employed to extract a-50-day-resonant signal from the interface height data simulation. The results indicate that the 50-day Kelvin wave propagates northward along the Makassar Strait. One part of this wave turns back at the Labani channel and makes southward propagation along the eastern coast of the Makassar Strait. The rest part is going further to enter the Sulawesi Sea and makes 50-day resonance within the basin. This finding will have important implication on the intra-seasonal time scale variability of the Indonesian throughflow transport entering the Indonesian Seas and needs further investigation as well as comparison with observational data.
MODULASI JUNCTION ANTAR SEL MENGGUNAKAN PEPTIDA KADHERIN UPAYA MENINGKATKAN PENGHANTARAN OBAT Sinaga, Ernawati; Jois, Seetharama Seetharama; Avery, Mike; Makagiansar, Irwan
Makara Journal of Science Vol. 8, No. 1
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Modulation of Intercellular Junction by Utilization of Cadherin Peptides as an Effort to Improve Drug Delivery. Rapid advances in combinatorial chemistry and molecular biology has influenced the discovery of many proteins, peptides and peptidomimetics as potential therapeutic agents. Unfortunately, the practical application of these potential drugs is often restricted by the difficulties of delivering them to target site(s) due to the presence of biological barriers. Recently, a new method to improve the drug delivery, that is by modulating the intercellular junction, has been evaluated. Modulation of intercellular junction could be achieved by modulating the proteins which play important role in establishing the intercellular junction, one of which is cadherin. In the present work we have demonstrated the ability of several cadherin peptides, i.e. Ac-LFSHAVSSNG-NH2 (HAV-10), Ac-SHAVSS-NH2 (HAV-6), Ac-QGADTPPVGV-NH2 (ADT-10), and Ac-ADTPPV-NH2 (ADT-6) to modulate the intercellular junction of MDCK (Madin Darby Canine Kidney) cells, this finding is a contribution to the establishment of a new method to improve the drug delivery by utilization of cadherin peptides by modulating the intercellular junction.
OBESITY AND CARDIOVASCULAR DISEASE IN CHILDRE Masrizal, Mellova Amir
Makara Journal of Science Vol. 8, No. 1
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Abstract

Obesity, cardiovascular disease, energy balance, cholesterol, and lipoprotein.
Two New Records of Wild Bananas (Musa balbisiana and Musa itinerans) from Sulawesi Sulistyaningsih, Lulut Dwi; Megia, Rita; Widjaja, Elizabeth Anita
Makara Journal of Science Vol. 8, No. 1
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The diversity of wild banana species in Sulawesi was investigated based on the morphological characteristics of herbarium specimens collected in Sulawesi and deposited in the Herbarium Bogoriense, Bogor, Indonesia (BO). New specimens were collected from Central, North, South, and Southeast Sulawesi, and digital type specimens were also used in this study. The aim of this study was to describe the diversity of wild banana species in Sulawesi as most Musaceae specimens stored at BO have not been identified. By examinating 110 sheets of herbarium specimens, five species of Musa, including two infraspecific taxa of M. acuminata housed in Sulawesi, were identified. Musa acuminata, M. celebica, and M. textilis were previously reported from Sulawesi. However, M. balbisiana and M. itinerans are two new records of wild banana species in Sulawesi. Identification keys, descriptions, distribution maps, and line-drawing illustrations of these two species are provided.
Morphological and Molecular Analysis and Flowering Time of T2 Generation Transgenic Rice cv. Nipponbare Carrying CONSTANS (CO) Gene Irshanty, Firdha Meidi; Salamah, Andi; Santoso, Tri Joko
Makara Journal of Science Vol. 8, No. 1
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Flowering is an important process that initiates plant productivity. Rice (Oryza sativa cv. Nipponbare) was genetically engineered by introducing a CONSTANS (CO) gene from Arabidopsis thaliana (AtCO) to improve rice productivity. The CO gene is a gene responsible for inducing early flowering. The aims of the experiment were to use morphological and molecular analysis to study the integration of the AtCO gene and its influence on agronomic traits in the T2 generation of Nipponbare transgenic AtCO rice. Morphological observations showed that agronomic traits tended to be better in the transgenic plants than in the wild type (controls), although the transgenic plants flowered later than the wild type. Polymerase Chain Reaction (PCR) analysis showed that 169 out of 227 transgenic rice plants showed hpt and CO gene integration.
Synthesis of Tris(4-Methoxyphenyl)Phenylsilane Using Phenylsilane and 4-Iodo Anisole Catalyzed by Palladium Complex Lesbani, Aldes; Mohadi, Risfidian; Eliza, Eliza; Mardiyanto, Mardiyanto
Makara Journal of Science Vol. 8, No. 1
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Sintesis Tris(4-Metoksifenil)Fenilsilan Menggunakan Fenilsilan dan 4-Iodida Anisol dengan Katalis Senyawa Kompleks Paladium. Sintesis tris(4-metoksifenil)fenilsilan melalui reaksi kopling antara fenilsilan dan 4-iodida anisol menggunakan senyawa paladium tersier tributilfosfin sebagai katalis telah dilakukan berdasarkan penentuan senyawa basa, pelarut, dan waktu reaksi kopling. Hasil penelitian menunjukkan bahwa senyawa tris(4-metoksifenil)fenilsilan dapat disintesis menghasilkan persentase produk maksimum pada penggunaan senyawa 1,4-diazabisiko[2,2,2]oktan (DABCO) sebagai basa, tetrahidrofuran sebagai pelarut, dan waktu reaksi kopling selama 5 hari. Persentase tertinggi produk senyawa tris(4-metoksifenil)fenilsilan adalah 35%.
Effectiveness of Powder and Solid Ragi Starter on Production of Bioethanol from Rice Straw Hydrolyzate Ediviani, Wanda; Octavia, Silvi; Yasman, Yasman
Makara Journal of Science Vol. 8, No. 1
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Rice straw is one of the most abundant forms of agricultural wastes in Indonesia. Rice straw contains polysaccharide in the form of cellulose and hemicellulose, which can be used as raw materials in the production of bioethanol. This study aims to examine the effectiveness of bioethanol production from rice straw’s hydrolyzate. Research was carried out by fermenting the sample using two types of starters (Baker's yeast, known as powder starter (F); and Tapai’s starter, known as solid starter (S) with a control of pure yeast, Saccharomyces cerevisiae. Glucose levels were measured using a glucometer, and bioethanol levels were analyzed using high-performance liquid chromatography (HPLC). In this study, split plot design was used as a data analyzer with two treatment factors: starter’s inoculum (R) and time of fermentation (T). This study shows that there is no significant difference between the starters’ levels of bioethanol production. However, S’s treatment produced higher levels (5,1 g/L) of bioethanol compared to F’s (4,8 g/L); the rate of bioethanol production in S’s treatment is also higher (1,3 g/L.h) than that in F’s (1,2 g/L.h). This study concludes that Tapai’s starter is more effective in producing bioethanol from rice straw’s hydrolyzate.

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