1,413 research outputs found
Potensi Hutan Tridharma USU sebagai Tempat Pengujian Keawetan Kayu
No full textAGUSTIA WARDHANA. The Potency of Forest Tridharma USU as a
Location for Wood Durability Test. Supervised by Arif Nuryawan & Luthfi
Hakim.
The aims of this research was to determine the forest of Tridharma as a
location for wood durability test. The method used adopt the technique analysis of
vegetation method by combination transect. The result of this research shows that
the forest of Tridharma USU as a location for wood durable test was decent,
provedly with finding average 103.884 termites at each nest (three of nest termite
have been forced). Species that found was only one species that was Macrotermes
gilvus Hagen.59 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
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
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
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
Analisis Kerugian dan Pemetaan Sebaran Serangan Rayap pada Bangunan SD Negeri di bagian Barat Kota Pekanbaru
No full textFRISCO PANAHATAN S. Analisis Kerugian dan Pemetaan Sebaran Serangan
Rayap Pada Bangunan SD Negeri Di Bagian Barat Kota Pekanbaru. Dibawah
bimbingan akademik oleh YUNUS AFIFUDIN dan LUTHFI HAKIM.
Sekolah dasar sebagai salah satu fasilitas umum yang sangat penting dan perlu
dijaga agar tetap berada pada kondisi yang baik. Serangan rayap pada bangunan
gedung pada saat ini merupakan masalah yang sangat besar mengingat intensitas
serangannya yang semakin tinggi dan meluas sehingga nilai kerugian akibat
serangan rayap cenderung meningkat dari tahun ke tahun. Penelitian ini bertujuan
untuk mendapatkan nilai kerugian ekonomis serangan rayap dan mendapatkan
peta sebaran jenis rayap pada bangunan SD Negeri di bagian barat Kota
Pekanbaru. Penelitian ini dilaksanakan dari bulan Juli 2014 sampai Agustus 2014
menggunakan metode Purposive Sampling 15% dari jumlah total sekolah SD
Negeri yang ada di kota Pekanbaru. Pengumpulan data dilakukan dengan
pengamatan langsung dan wawancara dilapangan dengan menggunakan kuisioner.
Data yang diperoleh kemudian dipetakan dengan menggunakan GIS (Geographic
Information System). Hasil yang diperoleh menunjukkan bahwa kerusakan ringan
sebesar 60% dan kerusakan sedang 40%. Kerugian ekonomis serangan rayap
terhadap bangunan Sekolah Dasar Negeri adalah Rp334.130.000,00 untuk standar
kayu tembesu dan Rp246.367.000,00 untuk standar kayu meranti. Jenis rayap
yang menyerang adalah Microtermes inspiratus dari rayap tanah dan
Cryptotermes cynocephalus dari rayap kayu kering55 HalamanSkripsi Sarjan
Perbandingan Sifat Anatomi Kayu Tusam (Pinus Merkusii) Alami dan Tanaman
No full textFriska Evalina Ginting : Camparison of anatomy characteristic for Natural Pine
(Pinus merkusii) and Planted. Under the guidances of Luthfi Hakim S.Hut, M.si
and Ridwanti Batubara.Hut, MP.
Wood comes from trees that have different characteristics. They are referred
to wood anatomy, physics and chemical characteristics. The purpose of this study is
to compare the anatomical characteristics of Pine's wood with planted ; to measure
fiber’s dimensional derivative; to measure fiber’s dimensional derivative and
compare the quality of natural pine’s wood fiber with a planted. The methods used
are the macroscopic observation by using a magnifying glass as well as microscopic
observation by maceration’s processing and dimensional measuring using a
microscope.
The results showed that the anatomical characteristics of natural Pine's and
planted are not much different, there is only a little difference in the color of wood.
Dimensions of fiber (fiber’s length, fiber’s diameter, lumen’s diameter and fiber’s
wall thickness) from the highest to the lowest is planted Pines > natural Pines .
Values of dimensional derivative (Runkle ratio, Felting power, Muhlsteph ratio,
Coefficient of rigidity, Flexibility ratio) of pine’s fiber in a row for the natural are
0.95: 67.93: 69.89: 0.23: 0.54 while for the planted in a row are 0.73: 77.22: 72.02 ;
0.25; 0.50. Based on Indonesian assessment criteria of wood fibers as raw material
for pulp and paper, the two types of Pine's (natural and Planted) are included in
quality of class II.71 HalamanSkripsi Sarjan
Ketahanan Fiber Plastic Composite (FPC) Terhadap Organisme Penggerek di Laut (Marine Borer)
No full textSARI DELVIANA MARBUN: Durability of Fiber Plastic Composite (FPC) to
Marine Borer Attack, supervised by LUTHFI HAKIM and RIDWANTI
BATUBARA.
Fiber Plastic Composite (FPC) is one of biocomposite products consists of
fiber lignocellulosic materials as filler and plastic as adhesive. In this research,
FPC made from recycle polypropilene and old corrugated paper fibre. The
purpose of this research were to evaluate durability the physical properties,
measure weight loss and intensity of the attacks in marine borer after being
soaked for six months in the harbour of Belawan. This research use completely
randomized factorial design, 2 factors: compositions polyprophylene and fiber
(50:50, 60:40 and 70:30) and type of plastic (recycled once and recycled more
than once). The results compare with JIS A 5905-2003 hardboard S20, JIS A
5908-2003 particleboards type 13 and SNI 01-7207-2006.
The results showed that the physical properties of FPC fulfill standard JIS A
5905-2003 hardboard S20 and JIS A 5908-2003 particleboards type 13 after
being soaked in the sea for six months except moisture content. Even so, the
moisture content for PP 70:30 (recycled once and recycled more than once) still
fulfill JIS A 5905-2003 hardboard S20 and JIS A 5908-2003 particleboards type
13. Moreover, the resistance FPC of against marine borer attack (weight loss and
intensity of the attacks) fulfill SNI 01-7207-2006. The results showed that all FPC
were attacked by marine borer. The specimen were attacked derive from
Pholadidae.95 HalamanSkripsi Sarjan
Analisis Kerugian dan Pemetaan Sebaran Serangan Rayap pada Bangunan SMA dan SMK Negeri di Kota Pekanbaru
No full textFRIEDA SITEPU. Losses Analysis and Mapping Distribution Of Termites Attack in
SMA and SMK Negeri Building in Pekanbaru. Supervised by LUTHFI HAKIM and
YUNUS AFIFUDIN
Building planning always take into two important aspects related that is the strength
and durability. Related to the strength , the structure of the building is planned based
on the load to occur and the power structure of the materials used. The tendency of
the danger of attacked by termites in buildings including residential function at this
point is getting higher. This study intend to get the value of economic losses termite
attack, and get the information types and the spread of termites that attack the
buildings of Senior High School and Vocational High School in Pekanbaru. The
research was conducted on July until August 2014. The method was used is direct
observation and interviews. The results mapped with GIS applications. The results
showed that 64% of senior school building have small damage and 34% of schools
included in the moderate damage. Termite species found are a type of dry wo52 HalamanSkripsi Sarjan
Inventarisasi dan Pemanfaatan Bambu Di Desa Sekitar Tahura Kabupaten Karo
No full textNurmala SARI: Inventory and Utilization of Bamboo Village Tahura DISTRICT
Around feat, Guided by Budi Utomo and Luthfi Hakim.
Bamboo is a plant easily cultivated and has the potential are quite high,
because bamboo has ecological benefits and economic benefits for society. The
purpose of this study is an inventory of bamboo, bamboo and examine the use of
economic value obtained by the public.
Based on the results of research on the utilization of bamboo used by the
people generally taken in the forest. There are two types of bamboo that is often
used by the people in the utilization of the basic ingredients of green bamboo
crafts (Gigantochloa apus) and bamboo gutters (Schizostachyum brachdladum).
This type of bamboo used for the base material is a bamboo basket-making craft
of green (Gigantochloa apus) and the manufacture of the bamboo gutters tepas
(Schizostachyum brachdladum). The highest economic value of the bamboo used
is bamboo gutters and economic value of the lowest green bamboo.65 HalamanSkripsi Sarjan
- …
