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Widyariset

widyariset
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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 14117932 EISSN : 24610976 DOI : -

Core Subject : Engineering,

Engineering

Widyariset is a scientific journal which publishes the results of research and development, assessment and systematic thinking about science and technology. The writers of the scientific papers in this journal come from researchers/researcher candidates from various institutions' research and development (R&D), and universities. Widyariset is published regularly three times a year: in April for the issue of Social Sciences and Humanities (IPSK), in August for the issue of Natural Sciences (IPA) and in December for the issue of Engineering Sciences (IPT).

Arjuna Subject : -

Articles 485 Documents

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FOREST MANAGEMENT THROUGH LOCAL WISDOM OF THE COMMUNITY AROUND THE SICIKE-CIKE NATURE PARK, NORTH SUMATRA Rospita Odorlina P. Situmorang; Elvina R. Simanjuntak
Widyariset Vol 18, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

The presence of local wisdom in Sicike-Cike Nature Park, North Sumatra, was studied. The result shows that local wisdom is important in forest conservation and tourism related purposes. The result also indicates that the conservation of The Nature Park and its water source is also supported by the existence of traditionalcustoms still largely followed and believe in nature as a sacred area.The preservation of forest management in The Nature Park through local wisdom is influenced by three group factors: basic factor, supporting, and motivating.Co-management that incorporates both local people and goverment is regarded as the best solution offered in the forest management of Sicike-Cike Nature Park.

INDONESIA-CHINA’S BILATERAL TRADE PATTERN ANALYSIS, PRE AND POST FULL IMPLEMENTATION OF THE ACFTA Aditya P. Alhayat
Widyariset Vol 15, No 1 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

This paper intends to study whether Indonesian-China’s bilateral trade pattern has substantially changedafter the full implementation of ASEAN-Cina Free Trade Agreement (ACFTA) in 2010. It also identifies the tradesectors which have comparative advantage and comparative disadvantage with China. Utilizing descriptivequantitative analysis, this study comparing the trade patterns pre and post ACFTA. The results showed that thetrade patterns between the two countries are relatively similar between before and after ACFTA. In addition, manyIndonesia’s commodity exports are still based on natural resources. Therefore, it needs trade policies to encouragehigher value-added of the products.

EFEKTIVITAS PEMUTUSAN MULTIWALLED CARBON NANOTUBES (MWNT) DENGAN MENGGUNAKAN HIGH ENERGY MILLING DAN CONVENTIONAL BALL MILLING Nono Darsono
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

The cutting efficiency of MWNTs was compared systematically between conventional ball milling and high-energy milling. The efficiency of both processes was evaluated in term of dispersion properties, aggregates size evolution, and degree of crystallinity. Two-hour high-energy milling produced a large portion of MWNTs smaller than 150 nm, while even 120-hour ball milling struggled to achieve smaller than 300 nm. It was revealed by the significantly viscosity value. Since the high-energy milling viscosity was much higher than ball milling, 2-hours high energy milling exhibited lower damage on the MWNTs thread than the 120-hours ball milling according to the I /I ratio and values of raman spectra were 3.63 and 2.81 for high energy milled and ball milled respectively.

EFFICACY OF MYCORRHIZAE AND Trichoderma AS A BIOLOGICAL CONTROL OF BASAL STEM ROT DISEASE (Ganoderma) AND AS A PROMOTOR OF OIL PALM SEEDLING GROWTH Donnarina Simanjuntak; Fahridayanti Fahridayanti; Agus Susanto
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

The experiment was in randomized block design which consisted of 14 treatments with 7 treatment combinations with Ganoderma infection and 7 treatment combinations without Ganoderma infections, there were 75 replications for each treatment combinations. The treatment combinations included applications of Mycorrhizae, Trichoderma, and standard fertilizer. Variables observed were disease incidence of Ganoderma, plant height, number of frond, and weight mass. The results showed that the application of Mycorrhizae was able to control basal stem rot disease until 7 months after the application of Ganoderma. A single application of Mycorrhizae had not been able to promote seedlings growth until 10 months. The role of Mycorrhizae in promoting seedling growth until 10 months was demonstrated when combined with Trichoderma and standard fertilizer application.

KARAKTERISASI MUTAN KENTANG HITAM (Plectranthus rotundifolius (poir.) spreng.) HASIL IRADIASI SINAR GAMMA YANG TOLERAN SALINITAS DAN KEKERINGAN DENGAN MENGGUNAKAN MARKA RAPD DAN ISSR Diyah Martanti; Yuyu S. Poerba; Kusumadewi Sri Yulita; Herlina Herlina
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Hausa potato (Plectranthus rotundifolius (Poir.) Spreng.) is one of the alternative food for people living in some part of Indonesia. However, its low level of genetic variations has become an obstacle in developing new va- riety. Plant breeding through mutation, e.g. irradiation of γ rays, can be assumed to improve genetic diversity. The aim of this study was to characterize tuber hausa potato mutant irradiated γ rays in salinity and drought tolerant using ISSR and RAPD markers. Five primers of ISSR and five primers of RAPD were used to amplify DNA of hausa potato mutants. Ten primers generated 95% polymorphic and 27 speciific band of irradiated salt-tolerant mutans. Meanwhile, they generated 49% polymorphic and three specific band of irradiated drought-tolerant mutans. The result of the Principal Component Analysis showed that mutants were divided into three groups based on specific bands that play role in the group formation. The result showed that the ISSR and RAPD markers can be reliable to characterize mutants on hausa potatoes.

THERMAL PERFORMANCE OF TRADITIONAL HOUSE UMA KBUBU Rini Nugrahaeni; I Ketut Suwantara
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

This study identified thermal performances of Uma Kbubu in Maslete village, which include the characterof thermal building and thermal comfort of occupants. Thermal values was measured by Hioki data Logger, Thermocoupletype T, Questemp 34, Anometer Kanomax, and closed questioner to get thermal responsed of occupants.Data was analysed by linear regression and comparation of building’s thermal characteristic between rainy anddry season. Study shows that Uma Kbubu has good thermal performance in rainy and dry season, and capableof creating thermal comfort for its occupants. Roof as building envelope has significant influence to thermalperformance of Uma Kbubu, while the wall had no significant effect. Neutral temperature was 24,6oC on rainyseason and 27,6 oC on dry season.

SKRINING PLASMA NUTFAH PADI TERHADAP CEKAMAN KEKERINGAN Rina Hapsari Wening; Untung Susanto
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Rice germplasm is a source of genetic traits in the development of high yielding varieties of rice. This study aims to obtain drought tolerant trait of rice germplasm so that it could be used as a donor in the development of drought tolerant rice. The experiment was conducted from April to September 2010 in the Experimental Site of Indonesian Agriculture Environment Research Institute, Jakenan, Pati, Jawa Tengah using Randomized Block Design (RBD) with three replications. The material used is 64 accessions of rice germplasm and 6 varieties of checks. The result showed that the character of maturity age and the number of filled grain per panicle have posi- tive correlation with grain yield per plant. Four accessions namely, Pelempung Jambi, Padi Jarum Emas, Padi Kuning, Cempo Abang Ner and Botel, have been selected tolerant to drought stress and high yielding based on the character of grain yield per plant, maturity age, and the number of filled grain per panicle. Based on rolling and drying leaf on heading phase, the fifth accessions have tolerance to drought stress with score 1–5. Fifth accession can be used as donor on development of drought tolerant rice.

EFEKTIVITAS METODE NONDESTRUKTIF NIR-JARINGAN SARAF TIRUAN DALAM MENENTUKAN KOMPOSISI KIMIA JAGUNG Harmi Andrianyta; I Wayan Budiastra
Widyariset Vol 13, No 2 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

High maize production should be followed by good handling and preservation up to consumer. Near Infrared Reflectance (NIR) was nondestructive testing method, as well as high accuracy, free from pollution, and rapid method, therefore suggested as a testing method. The objective of this study was asses of NIR technology efectivity in determining four major compositions of maize. Fifty samples of maize (intact seeds) were scanned from 900-2000 nm NIR wavelength, interval 5 nm. Calibration model for NIR measurement using Artificial Neural Network (ANN) technique three layers. As input layer ANN are 5, 10, and 15 nodes principal component (PC), hidden layer 4,6, 8, 10, and 12 nodes and output layer are single chemical composition and simultaneously. Prediction of an external validation set showed low the SEP (standard error of prediction) and CV (coeficient of variability). As result, NIR technology is able to predict maize chemical composition accurately SEP ranged from 0.004-0.496, CVranged from 0.047–0.518. ANN with 5 nodes input layer and single output layer were very strong recommended to generate NIR calibration model.

THE PROSPECT OF IMPROVING RICE CROPPING INDEX 400 IN WEST SUMATRA PROVINCE Anggita Tresliyana; Erythrina Erythrina
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Rice Cropping Index 400 is an option to increase national rice production by 5% every year. The purpose of this study is to know the prospect of increasing cropping index of irrigated paddy to Rice Cropping Index 400 in West Sumatra Province in terms of agro ecosystem sustainability and financial feasibility. The assessments used primary and secondary data. Quantitative analysis was applied to analyze total revenue and revenue to cost ratio (R/C). The results indicated that Rice Cropping Index 400 is feasible in West Sumatra Province in terms of agro ecosystem sustainability and financial feasibility with R/C value 2,22. The scenario of Rice Cropping Index 400 is to plant rice varieties Silugonggo and Ciherang, with “culikan” seedbed 15 days before harvest.

RESPONS BAWANG MERAH TERHADAP PEMUPUKAN ORGANIK DI LAHAN KERING (Respond of Onion to Organic Fertilizer in Dry Land) I Nyoman Adijaya
Widyariset Vol 13, No 3 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

Onion demand in Bali is supplied from other provinces in about 40%, therefore onion is one of prospective commodity to be developed in Bali. An assessment on respond of onion to organic fertilizer was done in Sanggalangit Village, Gerokgak District, Buleleng Regency of Bali Province from July to September 2008. The trial was designed using Randomized Complete Block Design with 5 replications. Fertilization treatments tested were RB 10 t ha-1, cow urine 15,000 l ha-1, combination of RB 5 t ha-1 + cow urine 7,500 l ha-1, and without fertilizer as control. Organic fertilizer could improve physical character of the soil in term of decrease bulk density from 1,149 g cm-3 to 1.111 g cm-3–1.085 g cm-3 and improve growth and yield of onion. Onion yield significantly increased 32.71%–60.77% compared to control. Utilization of organic fertilizer, RB and cow urine, which will applied either singly or combination can improve physical character of the soil and increase the yield of onion.

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Pusbindiklat Peneliti-LIPI (The National Training and Education Center for Researchers Development – Indonesian Institutes of Sciences) Jl. Raya Bogor Km. 46, Cibinong Science Center Cibinong - Bogor 16911

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA