Garuda - Garba Rujukan Digital

TEKNIK PEMBUATAN PUPUK ORGANIK DARI LIMBAH PADAT INDUSTRI MDF Sigit Baktya Prabawa
Jurnal Nusa Sylva Vol 17, No 2 (2017): JURNAL NUSA SYLVA
Publisher : Universitas Nusa Bangsa

Woody waste from logging activities and the wood processing industry is quite large. If this waste is not utilized, it will cause considerable losses due to wasted woody waste. In Indonesia there are many wood processing industries including the pulp and paper industry, plywood, molding, and medium density fiberboard (MDF). In the MDF industry, chipping are the activities that must be carried out. However, this chipping activity leaves considerable waste in the form of fine chips. Related to this, it is necessary to find and get the use of organic solid waste into a product that can provide added value and technology that can be applied by the communities. One solusion to this is probably by utilizing the waste into organic fertilizer. The aim of this study was to obtain information and technology for making organic fertilizers from the MDF's organic solid waste industry. Fine chip samples were taken from the MDF industry using raw materials from acacia mangium and gmelina, located in Senoni, Kutai Kartanegara Regency, East Kalimantan Province. Organic fertilizer was made by composting using EM-4 microbial consurtium with rice straw and chicken manure additives. The results of the study show that technically the composting of MDF solid waste can be done well. The composting process to mature takes about 4 months. Composting reduces the C element content of MDF waste from around 56% to 25%, and decreases the value of C/N ratio from 347 to around 28. Composting increases the N element more than 5 times, and also increases the content of K elements. Adding rice straw and chicken manure in general it tended to decrease the value of the C/N ratio, increase pH, and increase the levels of elements P, K, Ca and Mg and their cation exchange capacity. The addition of these materials generally made compost meet SNI standards except the compost water content.

EFEKTIFITAS PENGAWET NABATI DARI TUBA (Derris Elliptica BENTH.) MELALUI EKSTRAKSI PADA TITIK DIDIH PELARUTNYA YANG DIAPLIKASIKAN PADA BEBAK GEWANG Sigit Baktya Prabawa
Jurnal Nusa Sylva Vol 18, No 2 (2018): JURNAL NUSA SYLVA
Publisher : Universitas Nusa Bangsa

In East Nusa Tenggara (NTT) area there are many Gewang trees (Corypha utan LAMK.). Many people in NTT use Gewang midrib as components of home buildings such as walls and ceilings. But the building components of the Gewang midribs contain ingredients that have the potential to be attacked by organisms such as termites. To overcome this, preservation action is needed. On the other hand there are several types of toxic forest flora that are recommended as sources of vegetable preservatives including Tuba (Derris elliptica BENTH.). Meanwhile, there has not been much research on preservation for gewang midribs. Therefore this study aims to determine the effectiveness of vegetable preservatives from Tuba for preservation of Gewang midribs through extraction at the temperature of the boiling point of the solvent. Extraction of Tuba plants was carried out using a solvent of Acetone, Methanol and Water each at the boiling point temperature for 1 hour in a ratio of 1: 8. The results showed that through GCMS analysis and preservative effectiveness testing through soil termite tests indicated that the extraction method used in this study resulted in no sufficient amount of active ingredients to be used as vegetable preservatives or able to preserve gewang midribs. The results of this study recommended that in order to obtain active ingredients from Tuba plant extracts as vegetable preservatives to preserve gewang midribs, it is not recommended to extract these plants using extraction methods as was done in this study. Instead, to obtain active ingredients from Tuba plant extracts, it is recommended to try to extract using methanol at room temperature for 72 hours in a ratio of 1: 5.

TEKNIK PELENGKUNGAN KOMPONEN KAPAL KAYU SECARA TRADISIONAL DI BATULICIN KALIMANTAN SELATAN Sigit Baktya Prabawa
Jurnal Nusa Sylva Vol 18, No 1 (2018): JURNAL NUSA SYLVA
Publisher : Universitas Nusa Bangsa

Indonesia is an archipelago, within the islands themselves there are many rivers. To connect between one island or location to another, our ancestors have used wooden boats long ago. For income earning, the fishermen use also this wooden ship. Therefore, it is not surprising that since ancient times Indonesian people have been very familiar with what wooden boats are, including how to make these wooden ships and also how to choose wood suitable for the wooden ship. They commonly choose the wood available in their surrounding area. Batulicin is an area located on the southeastern coast of South Kalimantan province where many people make wooden boats such as fishing boats and cargo or passenger ships. The objective of this study was to describe how the Batulicin’s community made a curvature of the components of wooden vessels as well as informing the types of wood used for making wooden vessels. The result of this study showed that the wood for ship components were ulin, halaban and bungur. Although the selection of wood species was traditionally carried out, however these wood are still meet with the SNI standards requrenment as well as the rules of Indonesian Wooden Ship Construction. The curved components of the shipbuilding were found on the boat skin, boat ribs, boat ‘senta’ and on the propellers holder. The curvature techniques used by the community include by heating the wood and bending it, by force through dragging using a pulley and by utilizing the natural curvature of curved plant parts such as branches, roots or natural bent wooden stems. Although the wood bending technique done traditionally without pre-treatment, the wood from the curvature did not crack or break. In developing wood bending techniques for the community, it is recommended to find a bending technique with a preliminary treatment that is relatively inexpensive and easy to apply by the community.

PERBANDINGAN ANTARA KETEGUHAN REKAT LEM PUTIH DENGAN LEM KUNING PADA KARPET KAYU Sigit Baktya Prabawa
Wanamukti: Jurnal Penelitian Kehutanan Vol 23, No 2 (2020)
Publisher : Fakultas Kehutanan Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35138/wanamukti.v23i2.229

Wooden carpets are one of the products made of woody materials glued on the textiles. The wooden part can be in the form of plywood or solid wood, while the textiles as a carpet backing serves as a link between the pieces of woody material that make up the carpet. Compared to fabric carpets, wood carpets have several advantages in terms of health and maintenance. Wood carpet generally include woody material, fabrics, glue and finishing materials. The glue serves as an adhesive between woody material and fabric. The shear strength of glue adhesives has an important role in wood carpet products. In the local market there are several types of glue such as white glue (Polyvinyl Acetate) and yellow glue (Synthetic Rubber). The purpose of this study was to compare the shear strength of white and yellow glue. It is expected that people can choose the type of glue that is more suitable for wood carpets. The research data was tabulated and analysed by paired t-test. The results showed that the shear strength of white and yellow glue using manual clamps were 27.95 kg cm-2 and 13.78 kg cm-2 respectively. The shear strength of white glue strongly differ with those of yellow glue, and greather two times than the yellow one. In making or producing wooden carpets, it is recommanded to use white glue instead of yellow one and can apply manual clamps. However, for better results, it is recommended to apply a press machine.

Title

Found 4 Documents
Search

Abstract

Abstract

Abstract

Abstract

Title Search

Found 4 Documents Search

Abstract

Abstract

Abstract

Abstract

Title

Found 4 Documents
Search