3. Dip Diffusion method: this method is used only for green Bamboo. Bamboo culms are cut into size and submerged into Boric acid solution which is a water borne preservative for some days. Diffusion method is low and it also varies by the increase in concentration of the preservative. The preservative enters the culm through holes drilled into the internodes or through ends. About fifty to one hundred culms a month. 4. Hot and Cold Method: this technique is based on the principle that when Bamboo is heated, the air in the cells partially escapes due to expansion. In the course of cooling, preservative makes its way into the cell due to the slight vacuum created upon contraction of residual air. This method permits large scale of Bamboo to …show more content…
A sustainable building, or green building, or green Architecture was fundamentally seen in so many ancient civilizations and traditional architectures. So it is no more a new trend except that in the present it is viewed through a new perspective and with a proper technological support (Pawar Satish, 2014). The ‘Building Sector’ is the major source of demand for energy and materials e.g. steel that also produce by-product greenhouse gases (GHG) which is also prone to rusting and other weather degrading factors. However, a low-cost and renewable resource for permanent construction could be based on ‘Bamboo’. In tropical regions, construction size Bamboo reaches full strength already after 3-4 years. Bamboo can be seen growing on hill sides and along roads and fields it does not encroach on agricultural land either. On the contrary, Bamboo can prevent erosion and even revitalize devastated rain forest soil. Local economy can be promoted at all steps in the supply chain of Bamboo. Bamboo can even be of great help to the whole world by its remarkable CO2 sequestrating capacity. Bamboo has historically been used as a building material due to its inherent properties, being regenerating, biodegradable, with high tensile strength, and …show more content…
Bond between Bamboo and concrete is to be dealt separately. For this the surface of Bamboo has to be roughened with the application of tar and sand. Secondly Bamboo is used as an externally attached reinforcement. Joinery is the major concern while using Bamboo as externally attached reinforcement. Proper methods of fastenings with nut-bolt etc are to be developed to place a Bamboo in position. In case of externally attached Bamboo reinforcement, there is an advantage of a lever-arm, which being more reduces the overall depth of beam. Externally attached Bamboo may also be used for aesthetical purpose providing good looking architectural
Although considered faster and cheaper, this approach to providing other alternative resources to food is slowly but significantly drying up our plant and is compromising human health. Because of the increa...
If a plant cell is places in a hypotonic solution the cell has a lower water concentration to that of the solution. Water will move into the cell by osmosis from a high water concentration outside the cell to a lower water concentration inside the cell through a selectively permeable membrane. The cell becomes turbid
Aside from lignin’s obvious strengthening purpose it can also help plants in other ways. For instance, lignin contains specialized water conduct...
...res and water are available in lower part of soil which can provide enough water for “Misai Kucing” cultivation since it needs high volume of water.
In this experiment, we cut 2 onion roots tips about 1 cm long and placed it into a micro-tube with HCl. Then, the tube was placed in a water bath for 20 minutes to incubate the roots. After 20 minutes, we removed the HCl from the tube and rinsed 3 times the root tips with water. Then, we covered the root with Feulgen stain and incubated it for 12 minutes. Lastly, we removed the stain and rinsed the roots.
The materials required in this practical are green leaves of spinach, a mortar and pestle, Pasteur pipettes, anhydrous Na2SO4, TLC beaker, test tube...
· The beetroot piece is then placed into a tube of 5 cm of distilled
Sustainable design seeks to reduce negative impacts on the environment, the health and comfort of building occupants, thereby improving building performance. The basic objects of sustainability are to reduce consumption of non-renewable resources, minimal waste, and create healthy, productive environments (“Sustainable Design”). Focusing primarily on the sustainable design principles, there are five, including: low-impact materials, energy efficiency, quality and durability, design for reuse and recycling, and renewability. As sustainability appears to become the necessary trend in architecture, the question concerning the cost versus outcome of “going green” really an investment or a waste of time and money comes to mind. With our research provided below, we believe the expenses may truly be with the investment in the end.
This process is carried out in large drums or vats with paddles and workers using long sticks to churn the hides in the solution, (Gupta Shivam, 2007).
Human beings are susceptible to the force of nature. They had to make shelter for themselves. Material was one of the most basic tools to create shelter. By development of building construction, selection and use of materials also developed. The relationship between the architecture and the materials before invention of modern materials was simple and generally naturally [1]; in the past, architects always use tradition materials according their experimental skills. For choosing structural materials, they had attention to important factors such as availability (local materials) and harmony with climate and culture [2], although this way was forward with feedback. But this relationship was not continuing simply.
Despite the fact that novel technologies are continuously under development to complement existing practices in coming up with greener buildings, the universal intent is that such structures are designed to diminish the general effect on the built environment on health of the humans in addition to the natural environment via: Diminishing environmental degradation, pollution and waste, improving productivity of the employee and guarding occupant health, efficient usage of water, energy, in addition to other resources.
...then disinfected in a 10% bleach solution for 15 minutes. It is important to put all necessary materials needed for culturing in the laminar flow hood to prevent spreading contaminants once you begin working. After thoroughly washing your hands and arms, remove the leaf from the bleach solution with sterile forceps, then re-sterilize forceps and scalpel before cutting the petiole into 1cm pieces and the leaf into approximately 2cm squares. Place the explants on a petri dish with media, gently pressing to ensure contact between explant and media. First the explants are placed on an initiation medium, then later placed on a development medium. The medium used depends on the the stage of growth and requirements for salts, sugar, nutrients, vitamins, hormones, and pH. This process eventually produces many plantlets that can be transplanted into a non-sterile environment.
Sustainable buildings are becoming somewhat of a necessity in the world today. As the demand for green building develops, so does the demand for green building materials. Just as the old techniques and building materials seem to disappear in the assembly of things, they are now making a come back. Green building focuses on the efficiency of major resources like water and energy. As the cost for sustainable materials and products are on the decline, building green seems to be the most cost effective kind of design and construction. Looking specifically at green materials and their impact on the production of structures, it is evident that they are a prime choice for building material. The use of green materials should be promoted because they are better for the environment, more healthful for the consumer, and better for the economy.
Green buildings are not only designed for present use, but consideration is also been given to future uses as well. An adaptable structure can be "recycled" many times over the course of its useful life. If specific technical issues prevent use of the building for a new function, then the materials used in its construction are designed to facilitate ease of recycling and reprocessing of materials.
This module broadens our understanding on the ways in which buildings are constructed and the purpose of choosing materials and structures for buildings. This module is divided into survey, structure, materials and construction. These are taught specifically through lectures, tutorial exercises, drawings and lab test workshops. The lectures were an explanation of the topics in which our knowledge was put into practice by solving and experimenting questions during tutorials and workshops. By the end of the year, we gained great knowledge on the contents of this module by taking part in this structured order of learning and understanding in workshops and tutorials.