cover
Article Per Year (5 Year)
All
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
Widyariset
Published by Pusbindiklat Peneliti LIPI
ISSN : -     EISSN : 24610976     DOI : 10.14203
Core Subject : Science, Engineering,
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 24 Documents
 1   2   3 
Search results for , issue "Vol 14, No 2 (2011): Widyariset" : 24 Documents clear
OPTIMIZING OF COMPOSITE BOARD PRODUCTION MADE FROM WOOD WASTE AND BAMBOO Sukma Surya Kusuma; Bambang Subiyanto; Muh Yusram Massijaya
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.14.2.2011.415-422

Abstract

The objective of this research was to develop composite board made of bamboo veneer, rubber wood veneer, and log core waste of rubber wood with determining optimum log core strip constructions and type of veneers. The bamboo veneer made from slices of Betung (Dendrocalamus asper), Andong (Gigantochloa verticilata), and Tali (Gigantochloa apus) bamboo species. Strip forms of log core were square and silindric forms. Arrangement of log core strip was zigzag in design. Composite boards were constructed from seven layers. Water Based Polymer Isocyanate was used as adhesive in composite board productions. The research results showed that the composite board made of Andong bamboo veneer, and square strip of log core performed best quality compared to other composite boards. The above type of composite boards fulfi lled Japanese Agricultural Standard (JAS) No. 1516, 2003 for structural plywood. These composite board was suitable for structural purposes.
SUBSTITUTION OF PLANT UTILIZATION ON THE FOREST GARDENS OF MAIBRAT, WEST PAPUA Susan Salosa
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.14.2.2011.333-342

Abstract

The dividing in many provinces in Indonesia including West Papua has affected those areas in mobilization of information within areas, infrastructure changing such as roads, bridges, buildings and offi ces. Migration of people is also contributed to local plants existing and appearing of invasive species in the community gardens. The local plants are becoming scarce and fi nally disappeared. The research was conducted by fi eld survey technique on three villages: Arne, Framu, and Sembaro in the district of South Sorong (recently become part of Maibrat district). Data were analyzed tabulation continued with SPSS and diversity index. The research shows that aboutnine spesies, seven are species of bete and two kinds of pumpkin, become extinct. On the other hand peanut andred onion become part of local community’s life.
THE EFFECT OF ANTIFUNGAL ACTIVITY OF β-1,3-GLUCANASE Trichoderma reesei AGAINST ROOT FUNGI OF Ganoderma philippii Sri Wahyuni Budiarti; S.M. Widyastuti
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.14.2.2011.455-460

Abstract

Purifi ed three isoform β-1,3-glucanases of 90 kDa β-1,3-glucanase-I, 75 kDa β-1,3-glucanase-II, and 64 kDa β-1,3-glucanase-III derived from Trichoderma reesei isolate T13were tested in vitro for its antifungal activity to the root fungi of Ganoderma philippii. Antifungal activity was tested by bioassay using a modifi ed cup plate method and microscopic observation to determine the presence of abnormal mycelia growth of G. philippii. The result showed that antifungal activity of those three isoform β-1 ,3-glucanase (β-1,3-glucanase-I, β-1,3 glucanase-II, and β-1,3-glucanase-III) in vitro could not form growth inhibition against the mycelia of G. philippii. Microscopic observation revealed that the enzyme caused necrotic lesion, whereas the combination of β-1,3-glucanase and chitinase from T. harzianum (Sigma) caused lyzed hyphae of G. philippii.
EFFECTIVENESS OF CYROMAZINE APPLICATION AND PARASITOIDS RELEASE FOR CONTROLLING AGAINST LEAFMINER FLY Liriomyza huidobrensis (BLANCHARD) (DIPTERA: AGROMYZIDAE) Warsito Tantowijoyo
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.14.2.2011.375-382

Abstract

Liriomyza huidobrensis is an invasive pest for various crops. Till now, the management of this pest is by the only use of pesticides which hence increased its resistance and decrease of its natural enemies. The objective of the study was to assess the effectiveness of cyromazine and parasitoids for reducing the population of leafminer fl y (L. huidobrensis) and to analyse the economic impact of the different treatments. The study was conducted in the Sirukem village, Kalibening sub district, Banjarnegara district, Central Java from July to November 2009. To address the objective, four treatment strategies were applied: no treatment, cyromazine, parasitoid release and cyromazine-parasitoid, and observa-tion of damage intensity, sampling of infested leaves, assessment of yield and an economic analysis were undertaken. The results found that cyromazine and parasitoids were effective to control against infestation of Liriomyza. Cyromazine was also harmless for parasitoids. The dominant parasitoid found were Opius chromatomyiae and Hemiptarsenus varicorni which preferred to parasitize the larvae of L.huidobrensis on Vicia faba than on Solanum tuberosum.

Page 3 of 3 | Total Record : 24

 1   2   3 

Filter by Year

2011 2011


Reset
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