Makara Journal of Science
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SECOND RECORD OF BLUE-NOSED GRUBFISH, Parapercis albogutta (GÜNTHER, 1872) (PERCIFORMES: PENGUIPEDIDAE) FROM BITUNG, NORTH SULAWESI
No full textA specimens of Blue-nosed Grubfish, Parapercis alboguttata (Günther, 1872) were collected from reef flat of Ron Bolaan, Lembeh Island, North Sulawesi on 21 July 2008. It was caught by hook and line from a depths of about 10 – 20 m. First record of this specimen found in Makassar Strait and deposited at the Bishop Museum (BPBM) in Honolulu, USA. P. alboguttata has been found in many scattered locations in the Indo-West Pacific, from north western Australia, Indonesia, Philippines, Singapore, Malaysia, Oman and Somalia. Morphological features of the Indonesian specimen are reported. Keywords: Parapercis alboguttata, second record, Indonesi
POLIMERISASI EMULSI ETIL AKRILAT: PENGARUH KONSENTRASI SURFAKTAN, INISIATOR DAN TEKNIK POLIMERISASI TERHADAP DISTRIBUSI UKURAN PARTIKEL
No full textEmulsion Polymerization of Etyl Acrylate: The Effect of Surfactant, Initiator Concentration and Polymerization Technique on Particle Size Distribution. Emulsion polymerization was conducted using ethyl acrylate monomer. The effect of sodium lauryl sulfate concentration, ammonium persulfate concentration, the various of polymerization techniques and feeding time to the conversion, particle size and its distribution were observed. The purpose of this research is to obtain the optimum condition of ethyl acrylate homopolymer with particle size around 100 nm, to get the particle size distribution monodisperse and to get solid content value of the experiment closed to its theoretical value. The optimum condition then could be applied in shell polymerization of core-shell polymers. The results of the research showed that semicontinuous technique obtained optimum sodium lauryl sulfate concentration at 20 CMC (critical micelle concentration) and ammonium persulfate concentration is 3%. By using batch technique that the biggest particle size is 123 nm with conversion 95.8% and monodisperse. The shorter of feeding time the more monomer of ethyl acrylate being polymerized, it is showed by the higher conversion up to 94.4% and the bigger particle size is 107.9 nm. Keywords: emulsion polymerization, feeding time, ethyl acrylate, sodium lauryl sulfate, ammonium persulfate, particle size and core-shel
TEKS PADA BATU NISAN BARON VAN IMHOFF DILIHAT MELALUI ANALISIS SEMIOSIS MODEL PEIRCE DAN DANESI-PERRON
No full textEntering the Puppet Museum in Jakarta we come across with beautiful tombstones of the period of The Dutch –East Indian Company or the VOC (Verenigde Oost Indische Compagnie). The tombstones are clinking on the left wall inside the building. Compare with the others, the tombstone of Gustaaff Willem Baron van Imhoff is very unique because it has a different style of its heraldry. This paper revealed the historical background of Van Imhoff who had played an important role in the Indonesian’s colonial history in the middle of the eighteen century. The micro and the macro analyses of the data of the tombstone show that the verbal and the non-verbal data support the historical data. The result of this analysis enriches the knowledge of the cultural heritages from the colonial period of our country. Keywords: VOC-tombstone-verbal and non-verbal data – micro and macro analyse
KARAKTERISTIK GELOMBANG DAN ARUS DI ERETAN, INDRAMAYU
No full textThe Wave and Current Characteristic at Eretan, Indramayu. Erosion process occurs in many places, but each of these processes have their respective characteristics. The purpose of research for understanding the dynamics of the process that caused the coastline of the interaction between air, sea and land. Research has been conducted in Eretan, Indramayu in 2006. The results show the average wave height (H1/3) in February obtained higher (60.4 cm) compared with August (23.6 cm) and in May obtained a much lower (5.7 cm). Current velocity in February and in August obtained dominant raised due to by field of wave and the influence of tidal currents do not exist. Instead current velocity obtained in May was raised by the dominant tidal currents and very small currents generated by the wave field. The influence of the wave field to the velocity and direction of flow will distribute sediment transport in the area of wave breack (breack water) to the coastline. Characteristic wave has a period of 3, 5, and 7 second is the trigger shoreline retreat 1.5 m/year. Keywords: current, eretan Indramayu, erosion, monsoon, wav
VARIABILITY OF SATELLITE-OBSERVED SEA SURFACE HEIGHT IN THE TROPICAL INDIAN OCEAN: COMPARISON OF EOF AND SOM ANALYSIS
No full textWeekly sea surface height (SSH) in the tropical Indian Ocean (20°S - 20°N) was analyzed for the period of January 1993 – December 2007 using an empirical orthogonal function (EOF) and a self-organizing maps (SOM) analysis. The EOF analysis identifies four patterns and three of them are contained in the SOM patterns. The SOM, on the other hand, characterizes the sea level variability, which shows twenty-five patterns. The patterns with low (high) sea surface height anomaly (SSHA) in the southern (northern) hemisphere associated with the monsoonal winds dominate the variation in both two methods. The SOM is also able to separate typical patterns associated with the ENSO and or the Indian Ocean Dipole (IOD) events. Low SSHA occupied the western half of the basin while high SSHA loaded in the eastern basin when the La Niña event is taking place. The El Niño event is characterized by low SSHA in the northern hemisphere, along the equator and along the eastern boundary, while high SSHA in the southwestern part of the basin. The IOD event shows a dipole like pattern with low SSHA in the east and high SSHA in the west. When the IOD co-occurred with El Niño, a distinct dipole pattern is clearly observed. eywords: empirical orthogonal function, Indian Ocean Dipole, sea surface height, self-organizing maps, Southern Oscillation Inde
PENGARUH PENYUNTIKAN DOSIS MINIMAL DEPOT MEDROKSIPROGESTERON ASETAT (DMPA) TERHADAP BERAT BADAN DAN KIMIA DARAH TIKUS JANTAN GALUR SPRAGUE-DAWLEY
No full textEffect of Injection Minimal Dosages of Depot Medroxyprogesterone acetate (DMPA) to Body Weight and Blood Chemistry Male Rat Strain Sprague-Dawley. Many family planning program focus more on men. Until now, vasectomy has been the commonly used method for male contraception. However, this method creates inconvenience such as irreversibility and psychological problems. One of the alternatives contraception is the combination of depot medroxyprogesterone acetate (DMPA) and androgen. The minimum dosage of DMPA could suppress testosterone level that leads to reduced spermatogenesis and sperm viability. Nevertheless, until now it is not known whether minimum dosages of DMPA have an effect to body weight and blood chemistry. Therefore, this research aimed at determinate the effect of minimal dosages of DMPA to body mass and blood chemistry using male rats (Rattus norvegicus L.) strain Sprague-Dawley as model. This research using completely randomized design, unequal size sample, castration treatments and several doses DMPA (1.25, 0.625, and 0.313 milligram). Injecting of DMPA conducted intramuscularly on week 0 and week 12. Normality/homogeneity Data normality were analyzed before ANOVA test. Then, abnormal data were tested using Kruskal-Wallis test. The result shows that injection of DMPA in various doses do not have an effect on body weight and blood chemistry such as erytrocytes, haemoglobin, hematocrite, HDL, LDL, total cholesterol, SGOT, SGPT and triglyseride) (p>0,05). Furthermore, it is concluded that that no effect of minimal dosages of DMPA to body mass and blood chemistry of rat. Keywords: blood chemistry, body mass, DMPA, minimal dosages  
STUDI KARAKTERISASI OPTIS LAPISAN TIPIS a-SiC:H HASIL DEPOSISI METODE GLOWDISCHARGE
No full textOptical 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.Keywords: optical properties, amorphous silicon carbon, glowdischarg
OBESITY AND CARDIOVASCULAR DISEASE IN CHILDREN
No full textObesity is performed by genetic, environmental, and complex interaction between genetic and environmental factors.Fatness levels in obese children are indicative of increased risk for elevated blood pressure, cholesterol, and lipoproteinratios children and adolescents. Serum cholesterol and blood pressure are related to raise atherosclerotic lesion. Certaincardiovascular disease risk factors in obese children are related to the earliest stages of atherosclerosis disease. Obesechildren have the high risk factors of certain cardiovascular disease. Genetic factors affecting metabolic rate can besuccessfully managed by the introduction of environmental factors such as decrease caloric intake and increase physicalactivity. The treatment of obesity and of atherosclerotic patients should include dietary restriction (protein sparing modified fast and hypocaloric balanced diet), nutrition education, increased physical activity, behavior modification, and familial support. Success fully management of obesity can improve the quality of life and reduce the risk of morbidity and mortality associated with obesity.Keywords: Obesity, cardiovascular disease, energy balance, cholesterol, and lipoprotein
KELIMPAHAN PLANKTON DI PERAIRAN BANGKA-BELITUNG DAN LAUT CINA SELATAN, SUMATERA, MEI - JUNI 2002
No full textPlankton Abundance in Bangka – Belitung and South China Sea Waters, May - June 2002. The observation of plankton condition in Bangka, Belitung and South Cina Sea was conducted during May – June 2002. The parametersobserved were focused on the microplankton and macroplankton communities. Twenty seven points of observation were grouped into two locations based on the distance of the observation station. Plankton abundance varied with location groups from 2069 to 23392 cells/l and 1249 to 5448 individuals/m3 for microplankton and macroplankton, respectively. Microplanktonic community structure was dominated by the group of diatoms, such as Skeletonema, Chaetoceros, Rhizosolenia, and Thalassiothrix. The genus Ceratium, Dinophysis and Protoperidinium (the group of dinoflagellates) was found in relatively abundant, but still in normal condition. The structure of macroplankton was dominated by the group of copepods (50 – 89%) and larvacea (10- 30 %).Keywords: environmental condition, plankton, South China Se
KORELASI RAGAM AKTIVITAS TERHADAP KEBERHASILAN MAKAN TIGA JENIS KUNTUL DI CAGAR ALAM PULAU DUA TELUK BANTEN, SERANG
No full textCorrelation in Activity Variation to Feeding Success on Three Species Herons at Pulau Dua Nature Reserve Banten's Bays, Serang. This research intent to know activity manner influence that did by three species herons for feeding success at Pulau Dua Nature Reserve, Banten Bay, Serang. Observational method that is utilized is direct observing with backed up by picture taking utilizes observation method is focal. Analysis draws to be done by scan sampling method's. Data analyzed by correlation terminologically Spearmann by programs SPSS. Result observationally to point out that activity type was done upon eating is step, strike, catch and devours prey. Result tests Spearmann's correlation proves that activity manner a large part gets positive correlation with feeding success for three species herons depend on different feeding location. Just activity stop and not active just that gets negative correlation with feeding success on three species herons. Keywords: activities, influence, feeding, success, heron