Iwan Risnasari
YOU?
Author Swipe
View article: Physical, chemical, mechanical, and thermal properties of charcoal briquettes produced from mangrove branch wood
Physical, chemical, mechanical, and thermal properties of charcoal briquettes produced from mangrove branch wood Open
Introduction Charcoal briquettes serve as a renewable energy source to reduce dependence on fossil fuels and meet global market demands. Objective The aim of this study was to evaluate the characteristics of charcoal briquettes made from t…
View article: Improving Knowledge in Malay Weaving Business Groups Regarding The Making of Natural Fabric Dye Paste
Improving Knowledge in Malay Weaving Business Groups Regarding The Making of Natural Fabric Dye Paste Open
The demand for songket cloth has increased since the regulation on the use of traditional clothing in every government agency on certain days. The increasing need for songket cloth has encouraged people who make a living as cloth weavers i…
View article: The Empowerment and Independence of Assisted Village, Bagan Kuala Through Various Community Services on Ecotourism, Ecoprint Development, Waste Management, and Malaria Eradication
The Empowerment and Independence of Assisted Village, Bagan Kuala Through Various Community Services on Ecotourism, Ecoprint Development, Waste Management, and Malaria Eradication Open
This community service examines the empowerment and independence of Desa Binaan Bagan Kuala in the Tanjung Beringin Sub-district of Serdang Bedagai Regency, North Sumatra, through the implementation of ecotourism, ecoprint development acti…
View article: Potential of Malacca (Phyllanthus emblica L.) wood extracts as natural dyes for textiles
Potential of Malacca (Phyllanthus emblica L.) wood extracts as natural dyes for textiles Open
Exploration of plants in North Sumatra that have the potential to become natural textile dyes needs to be done. one of which is the Malacca plant ( Phyllanthus emblica L.). The research methods used in this study include the extraction of …
View article: An insight into the development of songket prototype made of yarn derived from oil palm trunk fibers
An insight into the development of songket prototype made of yarn derived from oil palm trunk fibers Open
This work interconnected between human, culture, and technology in term of preserving songket, a traditional handwoven fabric, constructed by levering the yarn to be woven with other yarn using a non-machine weaving apparatus. To bring bac…
View article: Natural dyes of Purun crafts materials and their effect on fibre dimension and derivative dimensions
Natural dyes of Purun crafts materials and their effect on fibre dimension and derivative dimensions Open
Purun is is commonly used in crafts like mats, hats, and tissue boxes, but synthetic dyes used in these products have negative environmental impacts. This research aims to study the use of natural dyes in purun fibre Natural dyes were extr…
View article: Marketing of eco-friendly purun handicraft in two purun craftsman centre villages in North Sumatra
Marketing of eco-friendly purun handicraft in two purun craftsman centre villages in North Sumatra Open
Purun is used as a raw material to make handicrafts such as woven mats, bags, hats, and sandals. In North Sumatra, there are two purun handicraft centres, i.e. Cinta Air Village, Deli Serdang Regency and Mekar Jaya Village, Langkat Regency…
View article: Utilization of Three Species of Mangrove Wood Branches for Briquettes and Its Preference as Alternative Solid Biofuel
Utilization of Three Species of Mangrove Wood Branches for Briquettes and Its Preference as Alternative Solid Biofuel Open
Wood briquettes - one of the biomass energies - were produced from three species of mangrove wood branches, namely mata buaya (Bruguiera sexangula), buta-buta (Excoecaria agallocha), and bakau minyak (Rhizophora apiculata) using three type…
View article: Physical, chemical, and thermal properties of branches mangrove wood of Bruguiera gymnorhiza during conversion into charcoal and charcoal briquette
Physical, chemical, and thermal properties of branches mangrove wood of Bruguiera gymnorhiza during conversion into charcoal and charcoal briquette Open
This study investigated physical, chemical, and thermal properties of the branch’s mangrove wood of Bruguiera gymnorhiza during conversion into charcoal and charcoal briquette. Two types of the branches were wood only (WO) and wood with ba…
View article: Utilization of Acacia auriculiformis tannins as a biomordant material for fabrics in the natural dyeing process using the ecoprint technique
Utilization of Acacia auriculiformis tannins as a biomordant material for fabrics in the natural dyeing process using the ecoprint technique Open
The ecoprint coloring techniques has the disadvantage that they fade easily. so a mordant is needed which functions as a color binder between the media and natural dyes so that they do not fade easily. Research was conducted to analyze the…
View article: Physical properties of five species of twigs from mangrove forest
Physical properties of five species of twigs from mangrove forest Open
The physical characteristics of the twigs of five different species of mangrove, including moisture content (MC), density, and specific gravity, have been studied. Using gravimetric analysis, the procedures were measured in accordance with…
View article: Panel products made of oil palm trunk bagasse (OPTB) and MMA (Methyl methacrylate)-styrofoam binder
Panel products made of oil palm trunk bagasse (OPTB) and MMA (Methyl methacrylate)-styrofoam binder Open
The waste product left over from pressing or extracting oil palm trunk (OPT) for sugar purposes is known as oil palm trunk bagasse (OPTB). This residue contains mainly vascular bundles and small amount of parenchyma. These materials are po…
View article: Briquettes Made of Branches Wood of Three Mangrove Species Bonded by Starch Adhesive
Briquettes Made of Branches Wood of Three Mangrove Species Bonded by Starch Adhesive Open
The development and utilization of wood briquettes is one of the efforts to reduce dependence on fossil fuels, including to fulfill overseas market need. This study aimed to evaluate the properties of wood briquettes made of the branches o…
View article: Bamboo marketing management (case study around PT Toba Pulp Lestari concesion)
Bamboo marketing management (case study around PT Toba Pulp Lestari concesion) Open
Bamboo belongs to the gramineae family (grasses), also called Giant Grass, clumps and consists of a number of stems (reeds) that grow gradually, from bamboo shoots to young stems and mature at the age of 4-5 years. And bamboo can be made i…
View article: Anatomical properties of branches and twigs mangrove woods
Anatomical properties of branches and twigs mangrove woods Open
In order to optimize the utilization of mangrove woods, particularly branches and twigs parts, this research was conducted to investigate anatomical properties of three species of mangrove woods, namely api-api ( Avicennia marina ), bakau …
View article: Basic properties of the mangrove tree branches as a raw material of wood pellets and briquettes
Basic properties of the mangrove tree branches as a raw material of wood pellets and briquettes Open
In order to sustain mangrove forests, only branches part of the mangrove trees have been utilized. In this context, these parts have been used as the raw material of wood pellets and briquettes. These solid biofuels are produced by compres…
View article: Use of biopolybag from tapioca starch and sawdust waste
Use of biopolybag from tapioca starch and sawdust waste Open
One alternative to overcome the weakness of polybags, namely creating plastic waste, is the use of biodegradable polybags (biopolybags) that are easily degraded so that they can be planted directly without having to be opened and disposed …
View article: PENGOLAHAN LIMBAH TANAMAN MANGROVE SEBAGAI BAHAN PEWARNA ALAMI PADA PRODUK ECOPRINT DI DESA LUBUK KERTANG KABUPATEN LANGKAT, SUMATERA UTARA
PENGOLAHAN LIMBAH TANAMAN MANGROVE SEBAGAI BAHAN PEWARNA ALAMI PADA PRODUK ECOPRINT DI DESA LUBUK KERTANG KABUPATEN LANGKAT, SUMATERA UTARA Open
Lubuk Kertang Village has the potential for mangrove ecotourism which is currently being developed as a source of income for the community's economy apart from fishermen and agriculture. Even the mangrove ecosystem in Lubuk Kertang Village…
View article: Prototypes of innovative and creative products from laboratory of forest products technology
Prototypes of innovative and creative products from laboratory of forest products technology Open
Three types of prototypes of innovative and creative products have been made in Laboratory of Forest Products Technology, Faculty of Forestry, Universitas Sumatera Utara. According to the origin of raw material, the products are consisted …
View article: Deterioration of wood exposed to mangrove ecosystem
Deterioration of wood exposed to mangrove ecosystem Open
Deterioration of three types of wood, namely meranti wood ( Shorea spp .), mahoni wood ( Swietenia mahagoni) and damar wood ( Agathis dammara) in underwater exposure in the mangrove ecosystem investigated. The wood soaked for six months, a…
View article: Polyisoprenoids composition in mulberry (Morus alba L.)
Polyisoprenoids composition in mulberry (Morus alba L.) Open
White mulberry or murbei (Morus alba L., Moraceae) is a fast-growing shrub or tree species, indigenous to China and Korea and nowadays have been cultivated in the tropical, subtropical, and temperate regions including Indonesia. Mulberry i…
View article: Properties of fibreboard (FBs) and recycle fibreboard (rFBs) and analysis of their wastage after recycling
Properties of fibreboard (FBs) and recycle fibreboard (rFBs) and analysis of their wastage after recycling Open
Fibreboards (FBs) bonded by urea-formaldehyde (UF) resin derived from industry were intended to undergo cyclist test, a simulation of recycling activity. Objective of this study was to compare quality of FBs before and after recycling incl…
View article: Properties of wood composite plastics made from predominant Low Density Polyethylene (LDPE) plastics and their degradability in nature
Properties of wood composite plastics made from predominant Low Density Polyethylene (LDPE) plastics and their degradability in nature Open
To address concerns over plastics in the global environment, this project produced three wood plastics composites (WPCs) which could divert plastics from the waste stream into new materials. The three materials made had a ratio of 85%:15%,…
View article: Marketing Strategy for Kemenyan (Styrax spp.) by Community Around The Protected Area HPHTI of PT. Toba Pulp Lestari
Marketing Strategy for Kemenyan (Styrax spp.) by Community Around The Protected Area HPHTI of PT. Toba Pulp Lestari Open
Incense is a type of sap produced from kemenyan tree ( Styrax spp.) by tapping the wood bark. Incense is one of the vegetative non-timber forests product which categorized to resins group that can be processed and utilized for various uses…
View article: Enhancement of Oil Palm Waste Nanoparticles on the Properties and Characterization of Hybrid Plywood Biocomposites
Enhancement of Oil Palm Waste Nanoparticles on the Properties and Characterization of Hybrid Plywood Biocomposites Open
Using oil palm trunk (OPT) layered with empty fruit bunch (EFB), so-called hybrid plywood enhanced with palm oil ash nanoparticles, with phenol-formaldehyde (PF) resin as a binder, was produced in this study. The phenol-formaldehyde (PF) r…
View article: Application of liquefied adhesive made of oil-palm stem for particleboard binder
Application of liquefied adhesive made of oil-palm stem for particleboard binder Open
In order to evaluate the quality of liquefied adhesive made of oil-palm stem, this research compared results of physical and mechanical testing of particleboard bonded by liquefied adhesive made of oil-palm stem (LA), urea-formaldehyde (UF…
View article: The marketing strategy for sugar palm (Arenga pinnata) by people around the protected forest aren HPHTI of Toba Pulp Lestari
The marketing strategy for sugar palm (Arenga pinnata) by people around the protected forest aren HPHTI of Toba Pulp Lestari Open
Sugar palm is a plant that produces various high economy value product. The superior products of sugar palm as a food and energy source, among others, are brown sugar, palm-suiker, fresh sap, kolang-kaling (a type of candied fruit made fro…
View article: Feasibility analysis of sugar palm (Arenga pinnata Merr) by the people around Batang Gadis National Park area
Feasibility analysis of sugar palm (Arenga pinnata Merr) by the people around Batang Gadis National Park area Open
Sugar palm ( Arenga pinnata Merr) is a commodity that produces high economic value products and all of its parts can be processed into various food and non-food products. The purpose of this study was to determine and analyse the feasibili…
View article: Preparation and characterization of nanocrystalline cellulose using ultrasonic assisted autohydrolysis
Preparation and characterization of nanocrystalline cellulose using ultrasonic assisted autohydrolysis Open
Cellulose is a biopolymer whose availability is abundant in nature. In its development, cellulose is widely used in the form of nanocrystalline cellulose because it has better properties than the original material. The method commonly used…