Garuda - Garba Rujukan Digital

All

Widyariset

widyariset
Website

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

4 5 6 7 8

NISBAH HARA MIKRO TERHADAP KALIUM DAUN BEBERAPA VARIETAS PADI (Oryza sativa L.) PADA DUA JENIS TANAH Yustisia Yustisia; Tohari Tohari; Dja’far Shiddieq; Subowo G.
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Pot experiment was conducted at the experimental farm of Agriculture Faculty, Gadjah Mada University, Yogyakarta and aimed to investigate the effect of soil types, varieties and and their interaction on Fe/K, Mn/K, Cu/K and Zn/K leaf, growth, leaf protein and grain yield of rice. The experiment was set up in a 2 x 6 factorial pat- tern randomized completely block design with three replications. First factor was two soil types viz. Vertisols and Inceptisols, second factor was rice varieties viz. Cimelati, Pandan Wangi, Ciherang, Cisokan, Widas and IR 64. The result revealed that the Fe/K, Cu/K and Zn/K ratios in rice leaf was significantly affected by soil types and rice varieties. The interaction of soil and rice varieties significantly affected the leaf ratios of Fe/K, Cu/K and Zn/K, crop growth rate (CGR) and grain yield, but it was not significantly affect the Mn/K ratio and leaf protein. The leaf ratios of Fe/K, Cu/K and Zn/K, CGR and grain yield in Vertisols were significantly higher than those in Inceptisols, while Mn/K ratio and leaf protein was significantly higher in Inceptisols. The highest of grain yield was achieved by Pandan Wangi whereas the lowest of grain yield was achieved by IR 64. The lowest of grain yield was achieved by IR 64 in Inceptisols. It was affected by an imbalance of Mn/K ratio and highest of leaf protein. It could be due to the effect of Inceptisols native soil properties (lower pH, higher Mn and K) and specific characteristics of IR 64 (more responsive to low pH, higher NH + uptake). It was also may be caused by indirect effect of urea excess and KCl fertilizers on reducing of rhizosphere pH. The Mn/K ratio was important nutrient imbalance in Inceptisols soil and rice plant. The finding of this study suggests that the research in depth which is focused on Mn/K ratio balance in Inceptisols is needed, i.e using urea and KCl application in proper rate, using another source of nitrogen and potassium fertilizers, and using specific of varieties (less responsive to NH + and more responsive to NO -).

INFLUENCES OF METEOROLOGICAL PARAMETERS AND OZONE PRECURSORS TO NEURAL NETWORK MODEL IN OZONE TROPOSPHERIC CONCENTRATION (STUDY IN BANDUNG CITY) Dyah Lukita Sari; R. Driejana
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

As an air pollutant, the fate of ozone is determined by the movement and chemistry of atmospheric dynamics and the precursors of ozone are emitted from the source. In that case the effect of each of meteorological param- eters and ozone precursors need to be known so that the ozone concentration can be predicted. In this research the concentration of ozone precursors (NO and NO2), temperature, solar global radiation, humidity, and wind speed as meteorology parameters were used as input in artifi cial neural network program to obtain model which can predict concentration of tropospheric ozone in Bandung city. The relation between ozone precursors concentration and meteorological parameters to ozone concentration was indicated by the correlation value. Positive correlation values, the increase in ozone concentration, was infl uenced by variables of temperature and solar radiation. A negative correlation value, the decline in ozone concentration, is affected by humidity variables. Modelling results indicate that the use of temperature and concentrations NO2 as data input appeared to be a dominant contributors rather than the other input parameters.

AN ASSESSMENT OF THE EFFECT OF RAIN CHARACTERISTICS AGAINSTS THE VOLUME OF WATER FLOW AND THE WEIGHT OF SUSPENSION IN KARST AREA Marcellinus Mandira Budi Utomo; Hatma Suryatmojo; Sri Astuti Soedjoko
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

The watershed management needs data of hydrology circulation, e.g. volume of water flow and weight ofsuspension. Rain is a main control for hydrology circulation. Rain characteristics need to be assessed for their effectagainst hydrology circulation. This research was aimed to assess the effect of rain characteristics and to createan equation of volume of water flow and weight of suspension in karst area. A combination method of explorationand statistic calculation was used in this research. Parameters of volume of water flow and weight of suspensionwas measured at several different of water levels. The data were analyzed to assess the rain characteristics thatinfluenced hydrology circulation. The result showed that 30 minutes maximum intensity (I 30’) affected the volumeof water flow and weight of suspension. The functions raised from this research were V = 563.646 (I 30’ )–644.063and W = 59.660 (I 30’ )–209.758.

EVALUASI PERTUMBUHAN TANAMAN UJI KETURUNAN JATI (Tect ona gra ndis L.f.) MENGGUNAKAN ANALISIS MULTIKRITERIA Hery Kurniawan
Widyariset Vol 13, No 3 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

This research was aimed to determine the rank of tree family in the teak (Tectona grandis L.f.) progeny test based on multi criteria analyses. Research was conducted using deductive approach by collecting data on experiment site consisting of 10 blocks. The proposed criteria and indicators were based on literature study focusing on (1) simple measurement in the field, (2) principle of management objective, and (3) basic principle of silviculture. The selected criteria were stem quality, crown condition and tree growth, and each criteria was derived into indicators and verifiers. Based on the frequency of appearance in the top 25% on each block, the top ten superior families were seedlot number 90 with 8 times, followed by seedlot number 11 and 31 with 7 times, and then seedlot number 10, 106, 124, 15, 18, 4, and 46 with 6 times, respectively.

CRITICAL STUDY OF COMMUNITY EMPOWERMENT BASED ON FOREST APPROACH IN ITTO VILLAGE MODELS CIAMIS REGENCY Tri Sulistyati Widyaningsih; San Afri Awang
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

This study aims to critisize the community empowerment approach conducted by International Tropical Timber Organization (ITTO) project in the villages model in Ciamis. This study use qualitative method. Datawere collected through interview, observation, and documentation. The result shows that the villages model tend to have the same stages of empowerment, the implementation of the approach using by ITTO project still far from the essence of empowerment because of one of selected group is a successfull group, the program carried out uniformly, top-down, and using manipulative participation. The critical solution suggested for the next similarproject, before the implementation, all stakeholders should have a common understanding about the appropriate approach of community empowerment.

THE INFLUENCE OF MIGRATION AND SOCIO-ECONOMIC DEMOGRAPHIC FACTORS ON FERTILITY IN DKI JAKARTA Nasrullah Nasrullah
Widyariset Vol 16, No 1 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

The development progress and changes in various sectors precede to the population movements. Subsequently, changes in the population movement (migration) and socio-economic demographic factors in the society will consign an influence on changing patterns and behavioural fertility. This study aims to examine the influence of migration and socio-economic and demographic factors on fertility in DKI Jakarta. The analysis is conducted by using Multinomial Logistic Regression method. The results found that migrants have higher tendency than non migrants to have 2-3 children while non migrants have higher tendency than migrants to have 1 or 4 or more children. It is also found that migration significantly influences fertility of women to have four or more children. Migrants are less likely (0.76 times) than non migrants to have four or more children than to have no children. On the other hand, it is found that there is influence of socio-economic and demographic factors on fertility.

Kumpulan Abstrak Inggris Abstrak Inggris
Widyariset Vol 2, No 2 (2016): Widyariset
Publisher : Pusbindiklat - LIPI

SIZE FRACTIONATION OF ZOOPLANKTON BIOMASS AND SPECIES COMPOSITION IN THE LAGOON OF PULAU PARI, SERIBU ISLANDS Reny Puspasari
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Zooplankton is the main prey of fish larvae. The match between fish larvae and its prey depends on the size and the composition of zooplankton. The study aims to investigate the biomass and species composition of zooplankton and their relationship to the environmental conditions in Pulau Pari Lagoon. Research was conducted from June to November 2010. Results showed that 63,9% of zooplankton biomass consisted of microzooplankton, dominated by the class of Crustacea with subclass of Copepoda, and 36,1% of zooplankton biomass consisted of mesozooplankton, dominated by the class of Crustaceasu with subclass of Malacostraca. The biomass peak occurred at the end of July indicating the highest food availability and this could support fish larve survival.

THE POTENTIAL OF VELVET BEANS (Mucuna pruriens L.) AS A SOURCE OF PROTEIN IN FOOD PRODUCTS Irma Susanti; Nobel Christian Siregar; Fitri Hasanah
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Penelitian ini bertujuan untuk memperoleh kondisi/perlakuan optimum awal untuk menghilangkan kadar HCN, membuat tempe, dan tahu koro benguk serta mengetahui daya terima konsumen terhadap produk yang di- hasilkan. Perlakuan awal yang dilakukan adalah perendaman koro benguk selama 12 jam, perendaman tiga hari, dan perendaman 12 jam dengan penambahan NaHCO 1% yang dapat menghilangkan kandungan HCN. Koro2 benguk dapat dijadikan tempe tanpa substitusi kedelai, sedangkan pembuatan tahu harus disubstitusi kedelai hingga 65%. Tempe koro benguk yang paling disukai adalah tempe dengan perlakuan awal perendaman tiga hari dengan kandungan protein 12,2%. Tahu koro benguk yang paling disukai adalah tahu dengan formula 20% koro benguk dan 80% kedelai, baik dengan perlakuan awal perendaman 12 jam dengan penambahan NaHCO2 maupun dengan perendaman selama tiga hari. Ini untuk pertama kalinya dilaporkan tentang tahu koro benguk. denganpenambahanNaHCO maupun

EMBRYONIC AND EARLY LARVAE DEVELOPMENT OF WILD BETTA (Betta imbellis LADIGES 1975) Sawung Cindelaras; Anjang Bangun Prasetio; Eni Kusrini
Widyariset Vol 1, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

Cupang (Betta imbellis) is a popular ornamental and fighting fish in Indonesia. Its popularity is not followed by its scientific information. The aim of this study was to explore the embryonic stages and early larva development. This information is needed for fish breeding. Total of 20–40 eggs and larvae were observed under a microscope with 40 and 100 magnifications. Eggs were observed every cleavage stage and larvae were observed every 12 hours. Fertilized eggs were seen translucent with dark yolk egg in a diameter of 1.09±0.04 mm. Cleavage stages occurred during 4–55 minutes after fertilization. Larvae hatched ±29 hrs after fertilization.The length of hatched larvae was 2.42 ±0.076 m, while yolk volume was 0.11 ±0.028 mm2. Larvae became free-swimming in 2-3 days and yolk were fully absorbed in 3–4 days after hatching and started to eat. The cleavage stage occurs for 55 minutes after fertilization and becomes foraging with a size of mouth opening 0.31±0.005mm which could consume nauplii ofArtemiasp.

Page 6 of 48 | Total Record : 476

4 5 6 7 8

Filter by Year

2009 2022

Filter By Issues

All Issue Vol 8, No 1 (2022): Widyariset Vol 6, No 2 (2020): Widyariset Vol 6, No 1 (2020): Widyariset Vol 5, No 2 (2019): Widyariset Vol 5, No 1 (2019): Widyariset Vol 4, No 2 (2018): Widyariset Vol 4, No 1 (2018): Widyariset Vol 3, No 2 (2017): Widyariset Vol 3, No 1 (2017): Widyariset Vol 2, No 2 (2016): Widyariset Vol 2, No 1 (2016): Widyariset Vol 18, No 2 (2015): Widyariset Vol 18, No 1 (2015): Widyariset Vol 1, No 1 (2015): Widyariset Vol 17, No 3 (2014): Widyariset Vol 17, No 2 (2014): Widyariset Vol 17, No 1 (2014): Widyariset Vol 16, No 3 (2013): Widyariset Vol 16, No 2 (2013): Widyariset Vol 16, No 1 (2013): Widyariset Vol 15, No 3 (2012): Widyariset Vol 15, No 2 (2012): Widyariset Vol 15, No 1 (2012): Widyariset Vol 14, No 3 (2011): Widyariset Vol 14, No 2 (2011): Widyariset Vol 14, No 1 (2011): Widyariset Vol 13, No 3 (2010): Widyariset Vol 13, No 2 (2010): Widyariset Vol 13, No 1 (2010): Widyariset Vol 12, No 3 (2009): Widyariset Vol 12, No 1 (2009): Widyariset More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Andri Rahman

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

Phone
-

Journal Mail Official
widyariset@mail.lipi.go.id

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

Location
Kab. bogor,

Jawa barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Andri Rahman

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

Phone -

Journal Mail Official widyariset@mail.lipi.go.id

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

Location Kab. bogor, Jawa barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Andri Rahman

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

Phone
-

Journal Mail Official
widyariset@mail.lipi.go.id

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

Location
Kab. bogor,

Jawa barat

INDONESIA