1,721,113 research outputs found
Peningkatan Kualitas Papan Komposit Limbah Batang Sawit dengan Acrylic sebagai Water Repellent
No full textEver-increasingdemand for woodandforestpotential ofshrinkingdemand
the useof woodin an efficientandprudent, for example byutilizingwasteoil
palmtrunkswhich have not beenoptimallyutilizedahigh-quality productsforthe
future.
The purpose of this study was to test the stability and strength of
composite boards from waste oil palm trunks with a ratio of water-resistant
coating acrylic of various brands. The hypothesis of this study is the differences
between different brands of acrylic that affect the physical properties and
mechanical properties of composite boards from oil palm trunk waste. There are
three treatments in this study, which refers to the first treatment of the outer
coating of the composite board with a water repellent Aquaproof brand, treatment
of both the outer coating with MultiGuard composite board, and the third with a
Waterproof coating. Testing of physical properties and mechanical properties
refer to JIS A 5908-2003. The results showed that physical properties of the
density has reached the target density with a value of 0.8 gr/cm3, where the
density range of 0.78 - 0.82 gr/cm3, water content ranged from 8:23 to 9:11%,
water absorption ranged from 8.69 - 10.86%, the development of thick for 2 hours
ranged between 3.1 - 4.92% and thickness development during the 24 hours range
from 11:34 to 15:53%. Meanwhile, for the results of testing the mechanical
properties of obtained results of an internal bond 8:19 - 10.81 kg/cm2, a strong
grasp of the screw 56.29 - 59.55 kgf, MOE 21124.08 - 31852.83 kg/cm2 and MOR
reached 279.62 - 378.36 kg/cm2. Results of analysis variancetreatment factorsthat
affectthe fundamental propertiesof oil palmtrunksarewater content, water
absorption, thicknessdevelopmentfor 2hours andthe development ofthickfor
24hours68 HalamanSkripsi Sarjan
Ketahanan Papan Semen-Serat Limbah Kertas Kardus terhadap Perendaman Air
No full textTIGOR BARUS : Resilience-Fiber Cement Board Cartons Paper Waste Of Water
Immersion. Supervisied by Luthfi Hakim and Arif Nuryawan.
Cement board has great potential as a substituted wood for building
construction. The research was conducted in Laboratoruim Forestry Department
of Forest Products Technology, Faculty of Agriculture, University of North
Sumatera aim of this study was to evaluate the durability of cement boards from
cardboard waste to water depth. Cement board under test measuring 50 mm x 50
mm x 10 mm with the addition of catalyst Calcium Chloride (CaCl2), Aluminum
sulfate (Al2(SO4 3), and Sodium Silicate (SiSO2) and without catalyst as a control.
Tests physical properties based on the standard JIS A 5908-2003 obtained
an average density value of cement board around 0.68 g/cm3 - 1.04 g/cm3, the
moisture content ranges from 14.31% - 14.92%, rated power Water absorpted,
development of thick and cyclic tests33 HalamanSkripsi Sarjan
Analisis Kerugian dan Pemetaan Sebaran Serangan Rayap pada Bangunan SMP Negeri di Kota Pekanbaru
No full textMEITA ENDASURA:Losses Analyze and Mapping The Distribution of Termites
that Attacked The Junior High School Buildings in Pekanbaru.LUTFI HAKIM
and YUNUS AFFIFUDIN.
Termites are pests that can cause the damage to buildings and can make a
big economic losses.The Junior High school building is one of the object that
target by termites which haven’t been studied and investigated. This study intend
to get the value of economic losses caused by termites attack toward the Junior
High School buildings in Pekanbaru. The distribution of termites mapped using
Geographic Information System (GIS). The method used was direct observation,
interviews using questionnaires and analyze the damage to buildings using a tally
sheet. The result showed that 75% of The Junior High School building were
attacked by the termites and 25% of The Junior High School building weren’t
attacked by the termites.48% of the The Junior High School building have
medium damage and 27 % have small damage.Termite species found are
Cryptotermes cynocephalus Light for dry wood termites and Microtermes
inspiratus Kemmer for subterranean termites.73 HalamanSkripsi Sarjan
Sifat Fisis dan Keawetan Alami Kayu Pengkih Terhadap Serangan Rayap Tanah (Macrotermes gilvus)
No full textThe types of wood from natural forests commonly used for the purposes of
building materials, furniture, craft and industrial materials nowadays more
limited and unbalanced with increasing demand for wood. To meet these needs
have used other types of wood that is easy to come by. Among these are the types
of wood that are less known and originating from natural and planted forests. The
research objective is evaluated Pengkih wood physical properties and resistance
to termite attack. Testing of physical properties based on the ASTM D 143-94
standard with sample size 2,5 x 2,5 x 7,5 cm3 and 2,5 x 2,5 x 10 cm3 each of three
replications in every part of the stem (base, middle, end). for natural durability
used SNI 01-7207-2006 standart with sample size 2,5 x 5 x 25 cm3 each of four
replications in every part of the stem. The results showed mouisture content
values ranged from 12.934% - 14.029%. density values ranged from 0.745 to
0.837 g/cm3 and classified into class II timber strength. The Value of water
absorption within 2 hours and 24 hours soaking ranged between 4.416% -
7.008% and 13,247 % – 14,420 %, value of thickness swelling within 2 hours and
24 hours soaking ranged between 4,416 % – 7,008 % and 13,247 % – 14,420 %.
Value of wood shrinkage from fresh mouistute content until air dry moisture
content and air dried moisture content until kiln dried moisture content ranged
between 7,040 % - 7,987 % dan 5,804 % - 7,141 %, value of pengkih wood
substance density is 1,5. Pengkih wood including into first durable grade timber
with the percentage of weight loss ranged between 0.3% - 0.6%. The intensity
smallest value of attacks found at the base and the largest at the end of the stick.56 HalamanSkripsi Sarjan
Pemanfaatan Zat Ekstraktif Kulit Mindi (Melia Azedarach Linn.) sebagai Bahan Pengawet Alami untuk Mengendalikan Serangan Fungi Schizophyllum Commune pada Kayu Karet (Hevea Brasiliensis)
No full textCHRISTIAN ARNANDO. Utilization of Extractive Substances Mindi Bark (M.
azedarach Linn.) as a Natural Preservative to Control Fungal Attack S. commune
on Rubber Wood (H. brasiliensis)
Supervised by RIDWANTI BATUBARA and LUTHFI HAKIM
The fungus S. commune is one of the wood-rot fungus that often attacks the
rubber timber that can degrade the quality of the wood. Research aims to test the
bark extract Mindi (M. azedarach Linn.) to control fungal S. commune at different
concentrations using methanol solvent. Wood preservation using bark extract
Mindi (M. azedarach Linn.) In a concentration of 4 levels (0%, 2%, 4% and 6%)
was used to suppress the growth of fungi, thus increasing the durability of rubber
wood. Research methods to calculated the percentage of chinaberry bark extract
concentration, retention test, dimensional stability test, and test against fungi.
Testing was done by testing retention, dimensional stability test, and test against
fungi. Retention testing showed differences in concentration affects the amount of
preservative into the timber. Dimensional stability test showed differences in
concentration do not affect the value of ASE (Antisweeling Efficiency). Tests on
the fungus S. commune showed concentration factors influencing the magnitude of
weight loss due to fungal attack rubber wood. Based on the SNI standard 01-
72072-2006, preservation with 6% recommended concentration is applied to
improve the resilience of rubber wood from fungal attack S. commune.47 HalamanSkripsi Sarjan
Inventory and Flavonoid Content Test of Lower Plant Medicinal Plants in Rumah Sumbul Village, Sibolangit, Deli Serdang, North Sumatra
No full textRumah Sumbul Village is one of 30 villages in Sibolangit Sub-district, Deli Serdang Regency, where most of the population still uses and preserves the use of traditional medicinal plants for various types of diseases suffered. One of the local wisdom in the health sector that has not been widely documented is the local wisdom of the Batak ethnicity. The purpose of the study was to identify what types of lower plant medicinal plants exist in Rumah Sumbul Village and analyze their flavonoid content. The diversity aspect of the method used is by analyzing vegetation, when in the field what is done is to make transect lines that are placed by purposive sampling based on the presence of plants that represent the area. The sampling intensity taken is 1% or an area of 0.06 hectares from an area of 6 hectares. The method used to determine flavonoid content is the flavonoid content test method. The results of the study were 19 types of lower plant medicinal plants, all of which contained flavonoid compounds. The usefulness of each type of medicinal plant is different. Most types of medicinal plants are used to be mixed ingredients in the manufacture of massage oil.62 PagesSkripsi Sarjan
Penurunan Kadar Pati Bambu Hitam (Gigantochloa Atroviolanceae Widjaja) oleh Fermentasi Suspensi Bakteri Biakan Murni dengan Metode Vertical Soak Diffusion
No full textThis research is the part of toneline wood an bamboo. Made from traditional and modern technique. By using vertical soak diffusion metode. There is make hole in bamboo and put in some liquor into it.. The aim of this research is to know about the compotition of starch from black bamboo (Gigantochloa atroviolacene Widjaja) with vertical zone: to know about bacteri concentration; and time of fermentation for dropped yielb starch from black bamboo. The equal show, yielb of starchfrom lower until upper from bamboo is 1.75% in lower bamboo, 1.55% in middle of bamboo, and 1.21% in upper of bamboo. Yielb of starch after treatment make some changed to down. But not show big significant change from some factor of treatment orInteraction on both of is.51 halamanSkripsi Sarjan
Analisis Sifat Fisika Kimia Kemenyan ( Styrax Sumatrana J.J.SM) asal Pangururan
No full textHasmar Sitinjak. Analysis the nature of benzoin gum physico-chemical (Styrax
sumatrana J.J.SM). the study was conducted under the supervision of Irawaty
Azhar, S.Hut, M.Si and Luthfi Hakim, S.Hut, M.Si.
The resultingincenseis generallydividedintosix
(6)qualityincensewithphysical and chemical propertiesaredifferent.Physical
propertiesof6 (six) qualityincenseisindicated by the differenceincolor, shape
andsize.While thechemical propertiesindicated by the differenceinmoisture
content, ash content, levels ofdirt, softpointand balsamatacid levelscontained
bytheincense. The difference inphysical-chemical propertiesaffect
thedetermination of thequality of theincense, so that willaffect the value/selling
priceof eachqualityincense.
The results showedthatthe percentage ofwater contentobtainedie0.39%,
0.13%, 0.03%, 0.13%, 0.03%, the percentage obtained bytheash content0.29%,
0.72%, 1.18%, 4:43%, 5.85%, the percentage
ofimpuritieslevelsobtainedie15.88%, 17.85%, 19.94%, 22:45%, 33.06%;
degreepointthesoftwareobtained80.9%, 92.5%, 93.5%, 95.3%, 96.5%, and the
percentageobtainedbalsamatacid levelsie34.39%, 30.44% ,28.75%, 27.1%,
23.5%.
Based on the analysisof incense, it is known that the higher thequality of
theincense, the lower the percentage ofash, dirtlevelsand the degree
ofsoftpointscontainedincense, andvice versa. While onbalsamatacidity, the higher
the percentageownedbalsamatacid content, the higher thequality of theincense.50 HalamanSkripsi Sarjan
Karakteristik Minyak Atsiri Jerangau (Acorus calamus)
No full textThis research aims to know the properties of the calamus oil (Acorus calamus). Research using this method the system with water and steam distillation for 6 hours. Observation is made yield of oil produced, specific gravity, optical cycles, refraction index, eugenol content, and solubility in alcohol. Results of the research shows the calamus oil yield from rhizoma and stem about 0,230% and 0,380% Result specific gravity of the calamus oil from the rhizoma and stem each 1, 0699 and 1, 0704. Index refraction of the calamus oil from the rhizoma and stem each 1, 512 and 1, 524. Optical cycles of the calamus oil from rhizoma and stem each (+)1,2 and (+) 1.3. Eugenol content of the calamus oil from rhizoma and stem each 4885% and 4388%. solvability results in alcohol of the calamus oil from rhizoma and stem rimpang and 1:5 respectively.54 HalamanSkripsi Sarjan
Karakteristik Papan Semen dari Limbah Kertas Kardus dengan Penambahan Katalis Natrium Silikat
No full textCharacteristics of Cement Board made from
Corrugated Paper Waste with Sodium Silicate Catalyst Addition. Supervised by
Tito Sucipto, S.Hut, M.Si and Luthfi Hakim, S.Hut, M.Si.
Cement board based of corrugated paper waste still has not been
researched. Cement board holds great potential as a wood substitute materials for
building construction. The research objective was to evaluate the physical and
mechanical properties of cement board as well resistance to termite attack.
Boards made with size 30 cm x 30 cm x 1 cm and a density 1 g/cm3 under various
composition of cement : fiber : water ratio with addition of sodium silicate
catalysts.
Physical and mechanical properties of cement board that fulfill the
standards were the density, water absorption and MOE, while the moisture
content, thickness swelling and MOR not fulfill the standards. The value of the
cement board using sodium silicate catalyst that fulfill the standards is the density
ranges from 1,01 g/cm3- 1,08 g/cm3, water absorption 13,01%-28,31%, MOE
562,76 kg/cm2-1015,68 kg/cm2 while the cement board without catalyst density
ranges from 1,06 g/cm3-1,09 g/cm3, water absorption 17,83%-26,96%, MOE
172,93 kg/cm2-465,48 kg/cm2. The cement board has a relatively high durability
against termite attack. Cement board that has the best quality based on the testing
of physical properties, mechanical properties and resistance to termite attack
there on the composition ratio of cement : fiber : water (2,5 : 1 : 1,25) with an
addition of sodium silicate catalyst.60 HalamanSkripsi Sarjan
- …
