Lettuce (Lactuca sativa L.) is vegetables with high nutrient content and interest more people, meanwhile producing optimum, yet, therefore, need hydroponic substrate to increase productivity. The orange woodfiber is a waste produced by palm industry manufacturer. The waste of Arengawood fibers has not used maximum yet, so if it’s piled up will be affects the ecosystem in around. We need to utili ze the waste of Arengawoodfiber to be a substrate hydroponic. The aim of this research is to know the maximum of Arengawoodfibercomposition in several sizes which is combined with the sands. It’s for increasing the growth and lettuce yield. The method of this research is completely randomized design with two factorials. They are the Arengawoodfibercomposition with sand and size of Arengawoodfiber. The main variable of observation is root length, wide of leaves, and fresh weight of lettuce. The result of observation showed that the Arengawoodfibercomposition and the sand composition for cultivation lettuce consist of 25% of Arengawoodfiber and 75% (1:3) of various size of sand. The highest root was 12.6 cm and it produced wide of leaves was 1602.3 cm 2 and increased the fresh plants until 53.7 g.
This research aims for finding out the response of chili to type of sound and composition of substrate in hydroponic systems and obtain the optimal composition of substrate in chili planting hydroponically. This research started from August 2014 until February 2015 at Faculty of Agriculture, Sebelas Maret University Surakarta using Completely Randomized Design that consists of two factors. First factor was sand type with 3 levels and the second one the composition of substrate with 4 levels. Data of observation result have been analyzed based on F test at 5% grade and average comparison test using Duncan Multiple Range Test (DMRT) at 5% grade. The Pearson Correlation test is used for analyzing to observe the relation of inter variable. The type of sand is not interacting with the composition of substrate except at observation of green leaves. The best growing and development of chili is at pure sand beach has the highest value it can be seen from fresh weight of root, root dry weight, plant height and canopy fresh weight, and the composition of the substrate (sand: palm woodfiber) 3:1 indicated by the root dry weight, plant height, canopy fresh weight, shoot dry weight, the weight of fruit per plant and the sum of fruits per plant.
Woodfiber waste of arenga produced from starch palm industry. It is not handled properly so that could be potentially cause problems for the surrounding community. Woodfiber waste of arenga is potentially used as a medium for hydroponics. The waste can be utilized to get a new composition of hydroponic media. This study aims to determine the effect of a mixture of sand with arengafiber waste.This research was carried out by using a mixture of sand and arengawoodfiber waste as a medium. This is an experimental study using a completely randomized design. This study aims to determine the effect of a mixture of sand and arengafiber waste for kailan growth. The results showed that the mixture of sand and arengawoodfiber waste has no effect on kailan growth. The combination of mixtures of sand and arengafiber waste showed no interaction. Observations on plants such as plant height, number of leaves, leaf greenness levels, the fresh weight of crop stover and stover dry weight of the plant, showed a row of the highest results in the media mix washed sand, washed sand and rice husk.
Sands have large pores so can dry quickly by evaporation process. One attempt to do to improve the productivity of sands by increasing the water holding capability with addition of organic fibers. One of them is a waste of arengawoodfiber that has not been handled properly. The purpose of this research is to determine the composition of the sand media combinations of arengawoodfiber which most suitable for planting of eggplant and tomato. This research was carried out in June to September 2013 in the screenhouse of Badan Penyuluhan Pertanian Perikanan dan Kehutanan (BP3K) Cangkringan Sleman regency. This study used a Completely Randomized Design (CRD) using a single factor which 7 treatments tested on eggplant and tomato, each treatment was repeated 5 times. Experimental data were analyzed using analysis of variance and DMRT at 5% level. The results showed that the treatment of planting media only affects to eggplant leaf number and weight of fruit per plant on both commodities. The highest number of leaves produced by the use of charcoal husk is 25.2 strands. The highest eggplant fruit weight per plant produced by the use of the washed sand medium was 209.36 g and 352.72 g for tomato planted on doesn’t wash sand.
studied hybrid composite polypropylene/wood flour/clay with MAPP with improved tensile strength and stiffness. In this study, the effect of MAPP addition on impact strength, water absorption and filler volume fraction of waste polypropylene (WPP) / Modified coconut wood flour (MCWF) / Glass Fiber (GF) Hybrid Composite were investigated. Fourier Transform Infra - Red (FTIR) characterization and Scanning Electron Microscopy (SEM) analysis were used to show the morphology of the fractured samples and structural changes after modification.
Results of analysis of variance also showed that the treatment of rice varieties and rice bran flour drying technique also significantly affect (p <0.05) the content of soluble dietary fiber (SDF). The average value of SDF in rice bran flour levels is presented in Figure 4. Combine treatment between rice bran flour from Cigeulis varieties and using microwaves dried technique has the highest SDF content or at 6.31%, while the lowest SDF content of 4.91% was obtained in the combine treatment between Cigeulis rice variety and oven drying technique. This is because of pectin degradation due to the use of high temperatures in the oven drying technique. This statement is in accordance with the results reported by Nyman in 2003 for commodities such as: carrots, green beans, and mungbean that cooked by blanching technique has a lower content of SDF compared to cooking using a microwave oven and similar results in previous studies by Svanberg et al. (1997) for mungbean. Results of analysis of variance also showed that the interaction between rice varieties and drying technique significantly (p <0.05) affect the content of dietary fiber (TDF) of rice bran flour. Average TDF content of rice bran flour from rice varieties and drying technique is presented in Figure 5. Combine treatment of Cigeulis variety and microwaves drying technique has the highest TDF content of rice bran flour or at 36.82%, while the combine treatment between Ciherang rice variety and ordinary oven drying technique showed the lowest TDF contains in rice bran flour or at about 17.19%.
Material actually wood powder and coconut fiber can be a reinforcing material for the manufacture of brake shoes. Besides easily accessible, the material is able to utilize the waste wood powder carbon powder (coconut shell charcoal) and copper powder that have been very disturbing society.
The superior performance of this wallpaper, wallpaper overcome many shortcomings, classic, practical end wallpaper. Fine wood surface or polyester synthetic fiber yarn extracted from a special species in the Nordic, matt pigment type (flowers, flax extract), soft and natural, easy and furniture with color variety; the human body without any chemical attack, breathable good performance, wall moisture, moisture can through the wallpaper; long-term use, there will be no feeling of suffocation, that is, we often say that the "breath of wallpaper", is the first choice for a healthy home. It is durable and can be cleaned with water, but you can use a brush. Anti-pull effect 8-10 times better than ordinary wallpaper. Mildew, moisture, decay, life is 2-3 times that of ordinary wallpaper.
Native sago starch had the highest protein and fat than others. Hydrolysis by citric acid decreased significantly protein and fat contents. Also after autoclaving-cooling treatment, protein and lipid content decreased, because heat treatment can denature protein and saponify fat which became soluble. Crude fiber content of lintnerized-autoclaved starch was highest than native and lintnerized starch. It was related with re-associate the structure when gelatinization and retrogradation process. Moisture content of most native starches was around 12% at ambient temperature and humidity conditions. Lintnerized-autoclaved starch had the lowest moisture (8.33 ± 0.1).
India and Seri Lanka is the most places that commercially produced coir that starting with food crop as its primary product. Coir fiber can be categorized into two categories which are immature coconut husks and fully ripened coconut husks. The immature coconut husk is very white in color, soft, thin and its coir still green. While for fully ripened coconut have a yield brown coir strong and highly resistance to abrasion (Hall, 2014).
The equilibrium moisture content of wood is affected by temperature and humidity and can vary as much as 3-4% depending on if the higher or lower humidity (i.e. wood exhibits a moisture sorption hysteresis). The moisture sorption of fillers and reinforcements derived from wood are affected by the methods used to produce them. However, wood flour is produced mechanically and its moisture sorption properties are similar to that of solid wood. Wood flour usually contains at least 4% moisture when delivered, which must be removed before or during the processing with thermoplastics. Even if dried, wood flour can still absorb moisture quickly. Depending on ambient conditions, wood flour can absorb several percent of moisture within hours. Moisture of up to about 30% can be adsorbed by the cell wall with a corresponding reversible increase in an apparent wood volume. Volume changes of the wood component due to moisture sorption, especially repeated moisture cycling, can lead to interfacial damage and matrix cracking (Peyer and Wolcott, 2000). As a result, many manufacturers of WPCs limits wood flour content to 50-65% by weight in the composite formulation and rely on the partial encapsulation of the wood by the polymer matrix to prevent major moisture sorption and subsequent negative effects to the fabricated composite.
Selected sample trees were felled, cut, and divided into three different parts (bottom, middle and top) of the stem. Each stem part was then cut into wood samples running from pith to bark portions for the measurement of their physical properties according to British Standard BS 373-1957 (Anonim, 1957). Information about selected sample trees is described in Table 1.
Penelitian ini merupakan penelitian eksperimental laboratoris dengan rancangan penelitian the post test only control group design. Sampel yang digunakan pada penelitian ini berupa spesimen yang dibuat dengan menggunakan cetakan dari bahan plastik berbentuk silindris dengan diameter 3 mm dan tinggi 6 mm. Besar sampel dari penelitian ini adalah 6 sampel untuk setiap kelompok. Sampel terbagi ke dalam 4 kelompok yaitu kelompok kontrol tanpa penambahan fiber dan kelompok perlakuan dengan penambahan fiber sebanyak 1 lapis, 2 lapis, dan 3 lapis. Sampel yang sudah dibuat direndam dalam aquadest steril dan diletakkan dalam inkubator 37 o C selama 24 jam kemudian dilakukan pengujian kekuatan tekan menggunakan
When the average experimental spring-back was compared with the empirical result, the trend is quite similar to each other as shown in Fig. 6. For run 45 and run 46, we can see that the spring-back increases from 1.25° to 24°. This was due to the difference in temperature. As explained previously, temperature plays a huge role in the spring-back angle of the oil palm fiber composite. At run 45, the temperature was 150°C while at run 46 the temperature was 130°C. This attribute can be seen for all of the samples pre- heated at 150°C and 130°C. Based on the empirical equation, the expected spring-back angle for the parameter of temperature 150°C, fibercomposition 30wt%, feed rate of 500mm/min and tool radius of 2mm is -1.29° while experimentally it was -1.75°.
Penelitian ini akan dilakukan dengan tujuan untuk melakukan studi awal pembuatan sensor biokimia. Studi dilakukan dengan menggunakan Plastic Optical Fiber (POF) yang dihilangkan cladding -nya pada sebagian panjang fiber dan core dari fiber di- polish pada salah satu sisinya hingga kedalaman tertentu yang digunakan sebagai sensornya. Tinjauan masalah dibatasi pada interaksi antara medan evanescent dengan senyawa POPs lindane sebagai fungsi konsentrasi. Studi akan diawali dengan kajian serapan optik untuk mengetahui panjang gelombang serapan optik.
In Chapter One, the background, objectives, scope of work and problem statement about the project were discussed. For Chapter Two, this project discussed about wood plastic composite, PP as the matrix, and the WF as the reinforcement. Then it continues by discussing about the mechanical test and physical test done to the specimen.
Pohon aren atau enau (Arenga pinnata) merupakan pohon yang menghasilkan bahan-bahan industri sudah sejak lama kita kenal. Hampir semua bagian atau produk tanaman ini dapat dimanfaatkan dan memiliki nilai ekonomi. Semua bagian pohon aren dapat diambil manfaatnya, mulai dari bagian-bagian fisik pohon maupun dari hasil-hasil produksinya. Hampir semua dari bagian fisik pohon ini dapat dimanfaatkan, misalnya: akar (untuk obat tradisional dan peralatan), batang (untuk berbagai macam peralatan dan bangunan), daun muda atau janur (untuk pembungkus atau pengganti kertas rokok yang disebut dengan kawung).