Analisis Sifat Fisik dan Mekanik Kayu Kelapa Sawit Hasil Kompregnasi Melamine Formaldehyde

During the past time the utilization of palm oil tree only limited to producing fruit to produce oil with all their derivatives, as well as the utilization of husk and midrib. Stem, as the biggest mass palm oil tree has not been used commercially due to its lack of quality. One effort in improving quality of palm oil wood is compregnation. Compregnation interpreted as an effort of putting the chemicals into wood structure using prresure. Chemicals that can penetrate into wood structure in this case is melamine formaldehyde resin. The result of research showed that compregnation palm oil wood by melamine formaldehyde increased the specific of gravity of wood from 0,32 before compregnation to 0,48, 0,58 and 0,65 for 50%, 75% and 100% concentrate. Moisture content decreased from 12,05% before compregnation to 10,67 at 100% concentrate. MOR increased from 64,58 kg/cm2 before compregnation to 131,54 kg/cm2, 188,94 kg/cm2 and 361,14 kg/cm2 each for 50%, 75% and 100% concentrate

Pendeteksi Tingkat Kebisingan Berbasis Internet Of Things sebagai Media Kontrol Kenyamanan Ruangan Perpustakaan

The library is a place that is used as a study and reading room, so that a comfortable place is needed from disturbances in the library building. Based on the decision of the Minister of Environment in 1996, the standard noise for library environments ranged from 45 to 55 dB. but in fact there is often a commotion caused by visitors. in this study a noise level detection system was created where the noise detection system is expected to be used as a media for comfort control in the library room. The noise level detector uses a sound sensor that is connected to Arduino.The system will be equipped with a warning system in the form of Buzzer and Warning Text sounds that will be displayed on the P10 LED Panel and equipped with Internet of Things technology that allows the supervisor or guard of the library to monitor the noise of the library room real time via Web Server. The test results show that this tool can detect noise levels in the range of at least 41 dB and a maximum of 69 dB with a deviation of 0.6 and an average error of 1.0%. the average sound intensity measured in the library room is 56.24 dB. The average percentage of the success of the system against Buzzer and Warning text warnings is equal to 97.3% and the average percentage of the success of sending data to the web server in the noise level detector is 95

Pengaruh Pemakaian Agregat Kasar Dari Limbah Amp Terhadap Kuat Tekan Beton Fc\u27 18,5 Mpa

Tujuan penelitian ini adalah melihat pengaruh uji kuat tekan pada beton normal dengan menggunakan agregat limbah AMP (asphal mixing plant) pada bahan pengganti agregat kasar dimana pada 0% dijadikan beton kontrol dan pada persentase 10%, 20% dan 30%. Adapun rancangan adukan beton menggunakan metode DOE (Development of Environment) yang umum dipakai. Setelah melalui penelitian pada pengujian kuat tekan yang dilaksanakan pada umur 7,14, dan 28 hari, persentase penggunaan agregat limbah AMP (asphal mixing plant) yang mengalami peningkatan kuat tekan yang signifikan ada

Pemodelan Pertumbuhan Tata Ruang Kota Semarang Berdasarkan Aspek Ekonomi Menggunakan Konsep Analisis Spasial Citra Satelit Resolusi Tinggi

Semarang city has a total area of 373,70 km2. Semarang is administratively divided into 16 districts and 177 village, Semarang have astronomical positions between lines 6o50 '- 7o10' south latitude and line 109o35 '- 110o50' east longitude. As the capital of Central Java province, Semarang is a city that is growing economically. Indirectly, the economic development in the city of Semarang influences the spatial growth of the city.The purpose of this research is to create a growth model spatial map of Semarang by using the concept of spatial analysis. Data used in the form of raster data. Namely, Landsat 2002, 2007, 2013, and 2015 along with attribute data of Semarang City with shapefile format. The data in this study were processed using supervised classification method combined with multi-criteria evaluation methods.The results of this study showed that the spatial growth occurs towards the south in the period 2002-2007, and spatial growth occurred in the east in the period 2007-2013, and growth in all directions in the period 2013-2015. Then, seen from the pattern of distribution of economic centers, in the period 2002, 2013, and 2015, the distribution pattern economic centers in the District of Central Semarang and South Semarang shows the distribution pattern clustered, while in the period 2007 distribution pattern economic centers in the District Central Semarang showed clumped distribution pattern while South Semarang exhibit a random pattern on the economic center of the upper classes, while other classes have clumped pattern.

Analisis Dan Simulasi Video Watermarking Menggunakan Metode Dual Tree Complex Wavelet Transform (DT-CWT) Dan Singular Value Decomposition (SVD)

Video piracy is the act of obtaining, copying, and selling or distributing videos that already had the copyright without the consent of the copyright owner. Watermarking is a process which embeds an additional information in the host video signal so that the embedded watermark cannot be seen and difficult to be erased or altered. Video watermarking in this journal used a mp4 format video and two different watermark images. Host video frames are divided into two equal lots, some of the frames are embedded by watermark image 1, and the others are embedded by watermark images 2. The methods used are Dual-Tree Complex Wavelet Transform (DTCWT) and Singular Value Decomposition (SVD). The two watermarks are embedded and extracted in each subband at a depth level 1 to level 4 DTCWT - SVD with the aim of seeking the best subband and the best level for embedding and extracting. In the extraction testing, watermarked video is given several attacks before extraction process. Based on the MOS and PSNR value the DTCWT-SVD level for embedding process is level 4, and based on the MOS and MSE value, the best extraction images are produced from the level 3. The best subband for embedding watermark are the subbands with three parts such as {1,5}{1,1}{1,2} and {1,5}{1,2}{1,2}

Rancang Bangun Sistem Informasi Dan Monitoring Alat Pemberi Isyarat Lalulintas Berbasis Teknologi SMS Gateway

The use of information and communication technology to overcome problems at intersections has been widely used. However, these technologies are still focused on managing traffic and road users and has not been used to access information about the condition of traffic control devices. In the City of Tegal, the assessment of the traffic signal devices is conducted using manual system which requires large number officers. Therefore, a new system which can inform the traffic signal devices condition automatically is needed. In this study, an automatic information and monitoring system for traffic signal devices, called SIMAPILL, was designed by using SMS Gateway. This system can give information related to the condition of traffic signal equipment in real time. By utilizing the results of this study, traffic signal equipment problems can be solved easily, quickly, and accurately

Studies on Dormancy Periods and Growth Rhythm of Shoot and Root of Mangosteen (Garcinia Mangostana L.)

Mangosteen has a good prospectus for International market. Many people in the world like this fruit because it is delicious, has high nutrient contents, and it can be consumed as a fresh fruit. The growth of mangosteen is very slow with a very long juvenile period because of its long dormancy period. The objective of this research was to study the dormancy periods and growth rhytm of shoot and root of young and adult mangosteen seedlings. The research used completely randomized design and consisted of two experiments. The first experiment was to study the dormancy and flushing periods. The second experiment was to study the growth patterns of shoot and root foom several ages of mangosteen seedlings. This research was conducted at Mekarsari Fruit Park, Cileungsi, Bogor. The result of the experiment showed that two years old of mangosteen seedling had 5 flushes per year, four years old of mangosteen had 3-4 flushes per year, and eight years old of mangosteen only had 2 flushes. Dormancy periods were significantly different between 2,4 and 8 year of mangosteen seedling. After the seedlings have branches, the dormancy periods become twice as many as that before branching. The roots grew rapidly two weeks before flush and slower after flush occurred