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Published by Pusbindiklat Peneliti LIPI

ISSN : - EISSN : 24610976 DOI : 10.14203

Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

Widyariset is a scientific journal which publishes the results of research and development, assessment, and systematic thinking about Natural Science.

Arjuna Subject : Umum - Umum

Articles 476 Documents

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SOME POPULATION PARAMETERS OF BALI SARDINE (Sardinella lemuru) IN BALI STRAIT WATERS Arief Wujdi
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Purse seine was introduced at 1972 in Bali Strait and since then Bali sardine fish (Sardinella lemuru) are the most widely exploited by fishermen in these waters. One of the largest landing site of Bali Strait purse seiner is in Muncar, East Java. This study aims to estimate population parameters of Bali Strait oil sardine that were caught by purse seine in Muncar. Data were collected from August 2010 to December 2011, and were analyzed using FISAT II (version 1.1.3). The results showed growth parameters were L∞ = 20.75 cmFL; K=1.20 year-1 and t0=0.1456 year. The results of Z=6.39 year-1; M=1.78 year-1; F=4.61 year-1; and E=0.65. The exploitation rate in this study was greater than the optimum exploitation (Eopt), indicating an overfishing had occurred. The recruitment pattern of Bali sardine had two peaks a year, in February and July, where the recruitment in July was greater than February.

HUBUNGAN ANTARA PERSEPSI TENTANG GAYA KEPEMIMPINAN DIREKTUR DENGAN PRODUKTIVITAS KERJA DOSEN POLITEKNIK ILMU PELAYARAN (PIP) MAKASSAR Jean Novita Christanty Budiman
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

This research was aimed: (1) to describe the perception of lecturers on director's leadership style, (2) to describe lecturers' working productivity, and (3) to know the correlation between the perception on director's leadership style and lecturers' working productivity at PIP Makassar. This research population was based on all lecturers (97) at PIP Makassar. However; the samples were randomly taken 55% from the population. The data were collected by questionnaire and interview methods, then they were analyzed by using descriptive statistics to describe the perception of lecturers on director's leadership style and lecturers 'working productivity. The correlation between the perception of lecturers on director 's leadership style and lecturers' working productivity was analyzed by a simple correlation. The results of this research showed that the perception of lecturers on director's leadership style was in a high category as well as lecturers' working productivity. By correlation analysis, it was found that there was a positive and a significant correlation (0.563) between the perception on director 's leadership style and lecturers' working productivity at PIP Makassar.

ISOLATION, SELECTION AND MOLECULAR IDENTIFICATION OF ANTIBIOTIC PRODUCING ACTINOMYCETES Tri Ratna Sulistiyani; Nunuk Widhyastuti
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Microorganisms is one of the biodiversity that is priceless. One type of microorganisms is actinomycetes. Actinomycetes is a potential source of bioactive compounds producing high comercial value in pharmaceuticals and agricultures. The results showed that 44 Actinomycetes isolates has the ability to produce secondary metabo-lites antibiotics. They were active against M. luteus, S. aureus, E. coli, B. subtilis, S. cerevisiae, and C. albicans. Morphological studied indicated that the A16.1 isolate belonged to the genus Streptomyces. The identifi cation result based on 16S rDNA sequence is S. hygroscopicus subsp. azalomyceticus with 97% similarity level.

DESIGN AND CONSTRUCTION OF LEAD ACID BATTERY LIFE CYCLE TESTER ACCORDING TO INDONESIAN NATIONAL STANDARD Susanto Sigit Rahardi
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Lead acid battery life cycle tester has been designed and constructed at Electrical Laboratory in B4T. The system consists of voltage and current controller and digital system. The purpose of the system is to test life cyle of lead acid batteries to meet government regulation and laboratory requirements specified by Indonesian National Standard (SNI).

PENGOLAHAN LINDI TPA DENGAN METODE KOAGULASI DAN OZONASI Latin Hanum Lalasari; Enjarlis Enjarlis
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Landfilling of municipal waste is a major problem of the waste management system in Indonesia. The generated leachate must be appropriately treated before being discharged into the environment because it ivas toxic. The aim of this research was to compare the coagulation, ozonation, coagulation-ozonation, and ozonation- coagulation processes of landfill leachate at TPA Bantar Gebang Bekasi, to classify the result of landfill leachate treatment, and to provide an efficient methodf or the treatment ofleachates, in order to reduce pollutants' content to concentration values lower than the corresponding limits. The variables selected in this research were types of coagulant, dosage of coagulant, and time duration of ozonation process. Parameters selected in this research were colour, taste, pH, Chemical Oxygen Demand ( COD), Total of Suspended Solid ( TSS), Chloride ion (Cl) and ammonia ion( NH4+). The result of research have shown that the best optimum method of landfall leachate treatment was coagulation-ozonation combination process using FeC13 0.25% as a coagulant and a ozonator (0.25 g 03//h) for 75 minutes at pH of 9. The process succeed to degrade the value of COD, Cl, NII; were about 90,91%, 13,45% , 6,68%, respectively and category of B grade for treated leachate.

SURVIVAL STRATEGY OF FORMER WOMEN MIGRANT WORKERS(CASE STUDY OF FORMER MOWEN MIGRANT WORKERS KALIWEDI CIREBON DISTRICT) Abdul Hakim
Widyariset Vol 14, No 1 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

The issue of poverty that does not go over and the narrowness of employment encourage rural women of Ujungsemi village to migrate. Being maids, they could raise capital to buy land, build houses and to open the business after returning home. The economic difficulties that had been churned from resolved even more than enough. However, the above condition does not last long. They have to go back and start life at home. The problem of this research: how social and economic conditions of former migrant workers, as well as what strategies they are doing to maintain viability. Field data were obtained by using interview and observation techniques. The data analysis phase is the stage of reduction, display and analysis. Informants are selected using purposive samplingtechnique. This research indicates that the former migrant workers initially had a mass liminality when returning to village that impact on business start work; changes in social and employment status. For maintaining the viability, they make such a strategies, among others, the use of social networks; girls mobilization; minimization of the number of children; saving; production of subsistence and additional income, reduce the cost of living and the utilization of the loan.

THE PATTERN OF THE ḤUFFĀŻ’S TEACHING-LEARNING PROCESS Moh. Khoeron
Widyariset Vol 15, No 1 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

This is a study of ‘Biografi Ḥuffāż di Indonesia’ which aimed to describe ḥuffāż’s teaching-learning process.The data were described and analyzed according to relevant theories, in order to give a clear description of theirprocess. The final result showed the variety of ḥuffāż’s teaching-learning process. Ḥuffāẓ learning patterns canbe grouped into three, namely: a) from the kitab kuning learning and memorizing the Quran; b) of memorizing theQuran and study kitab kuning; c) of the kitab kuning to learn, memorize the Quran, then return to the kitab kuning.Patterns of teaching based on talaqqī and musyāfahah. The method includes talaqqī, musyāfahah, sima’an,ngeloh, murā ja’ah, mudārasah, and takrār.

ANALYSIS OF CLIMATOLOGICAL THERMAL COMFORT IN DKI JAKARTA USING HEAT INDEX (HUMIDEX) Trinah Wati; Riri Indriani Nasution
Widyariset Vol 4, No 1 (2018): Widyariset
Publisher : Pusbindiklat - LIPI

Interactions between human and environment about the influence of the physical atmosphere’s state or weather on human is expressed in com- fort level. The complex relationship between health and weather factors with human comfort is defined as biometeorological index. One of the biometeorological indices is heat index called as Humidex. Studies about Humidex in Jakarta were conducted using climate data stations of Indonesian Agency for Meteorology, Climatology and Geophysics (BMKG), namely air temperature, relative humidity and wind speed daily average during 1985 to 2012. The purpose of this study was to determine the level of thermal comfort using heat index Humidex in Jakarta and its climatological trends during 1985 to 2012. Comparative analysis between Humidex and the wind speed and also with the number of vehicles in Jakarta were conducted to determine their impact to the heat index in Jakarta. The results showed that the Humidex monthly average in Jakarta ranged between 36,1 °C and 39,5 °C. Humidex monthly pattern had two peaks with the first peak was on May and the second one was on November, while the lowest value was recorded on August and January. Humidex in Jakarta tended to increase between 0.05 °C and 0.08 °C with its coefficient of determination (R2) was between 0.36 and 0.71. The effect of wind speed to Humidex was lowering the value of Humidex which increased the thermal comfort. Meanwhile, the number of vehicles showed a tendency to grow exponentially, which affected the further decline in thermal comfort level in Jakarta.

IDENTIFIKASI PENYEBAB KEJADIAN LUAR BIASA KOLERA DI PAPUA TERKAIT KONTAK JENAZAH DAN SANITASI Nelly Puspandari; Kambang Sariadji; Melati Wati
Widyariset Vol 13, No 2 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

Cholera outbreak in District Nabire and Paniai, Papua province in May to August in 2008 killed 105 people. The aim or the research was to describe the infection of cholera through human corpse and sanitation. Bacteriological examination was conducted on rectal swabs from diarrhea victims and theirs contacts and sources of water from three places. The samples were cultured, isolated, examined the serology test in the Bacteriology laboratory of the Center for Research and Pharmaceuticals Biomedical Agency, National Institute of Health and Research Development Jakarta. The results showed that the occurrence outbreak in Papua Province was caused by Ogawa, subtype of Vibrio cholera that also contaminated the water sources. The Culture of Papuan, hugging and kissing the human corpse made the evidence of cholerae worst.

DYNAMIC OF FISHERMEN EXCHANGE RATE ON TUNA FISHERIES IN BITUNG CITY Rizki Aprilian Wijaya
Widyariset Vol 18, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

Fishermen exchange rate (NTN) is one of the tools or indicator to see the welfare of fishing communities. This paper aims to analyze the structure of received value index, paid value index and dynamic of NTN. This study uses a quantitative approach through surveys. The study was conducted in the Batu Lubang Village, South LembehDistrict, Bitung City, North Sulawesi Province in 2012. 31 respondents determinent by purposive sampling. This research using value index as a NTN instrument, is the ratio between fishermen received value index (It) with the fishermen paid value index (Ib). The results showed that received value index is strongly influenced by theproduction and price of tuna catch. Paid value index is strongly influenced by the variable cost of fishing. Fishermen exchange rate index experienced a downward trend so that it can be said that the welfare of fishermen also decreased.

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Contact Name
Andri Rahman

Contact Email
andri.agus.rahman@lipi.go.id

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widyariset@mail.lipi.go.id

Editorial Address
Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

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Kab. bogor,

Jawa barat

INDONESIA