The shortage of high quality fishmeal and the wide gap in demand and supply for this resource are enhancing its price and can ultimately hamper further growth of aquaculture (Tacon et al., 1999; Siddhuraju et al., 2001). Feed cost is considered to be the highest recurrent cost in aquaculture, frequently ranging from 30% to 60%, depending on the strength of the operation (De Silva et al., 1995). Although the proper development of fish is depending mostly upon the quantity
which has a much higher concentration of dissolved salts than the original feed water (brine concentrate).[ Shatat et al., 2013] 1.2 Water desalination technologies
in machining traditional manufacturing, which may involve to remove the excess of material by processes like drilling or cutting,[9] is the fact that the desired objects are obtained with no additional post processing manufacturing, but by using additive processes. In this way, each layer is deposited individually, respecting certain coordinates that lead to the wanted shape, described in the digital model. This technology has easily covered a wide area of fields, since the beginning of the current
legal frameworks, because plants can be regrown.[1] It has become popular among coal power stations, which switch from coal to biomass to comply with the law. Biomass most often refers to plants or plant-based materials that are not used for food or feed, and are specifically called lignocellulosic biomass.[2] As an energy source, biomass can either be used directly via combustion to produce heat, or indirectly after converting it to various forms of biofuel. Conversion of biomass to biofuel
capability that it is used in wide fibrous forms. Various applications like automobiles, medical as well as geo textiles are summarized [1]. Creep resistance is improved by making the material light, by changing the process parameters or by adding additives to the material. A model is developed for long-range prediction of creep which shows that a very small deformation is found for high molecular weight of PP with a narrow distribution and with high molecular orientation [2]. Polymer blends enhance
What is better, organic food or genetically modified organisms (hereafter referred to as GMO’s)? Despite the popularity, GMO’s have been picking up pace because of their versatile properties, the disadvantages supersede the advantages and even though organic food production/cultivating isn't without its downsides, it is proven to be less detrimental to human health and the environment in the long term. In this paper, I will compare and contrast the drawbacks and benefits of using both purely organic
starches. Ethanol is mostly used as a blending agent with gasoline to increase octane and cut down carbon emitting gases which cause atmospheric pollution. Biodiesel is made by combining alcohol ( methanol) with vegetable oil. It can be used as an additive to reduce vehicle emissions or in its pure form as a renewable
CHAPTER TWO LITERATURE REVIEW 2.1 BIODIESEL AND ITS PROPERTIES Carini and Hogan’s study (as cited in Patton, 2002) OR “… origins of neuralgia” (Carini and Hogan, as cited in Patton, 2002, p. 2154) Biodiesel is a renewable, reduces the emission of some pollutants (Dinkov et al., 2008), and environmentally friendly alternative to mineral diesel fuel (Lam et al., as cited in Dinkov et al., 2008). Biodiesel is also non-flammable, non-explosive, biodegradable and nontoxic compared to mineral diesel. As
the worst case, some of this information is shown to be completely wrong. Nutritionists and doctors know that some studies since 1950 has been seriously handled. The reason is that many of these studies, financing companies that produce food and feed additives that are not good for us. These studies lay the foundation of the food pyramid that has been taught in schools since 1960, and have brought us to what we have said is a "healthy diet." Originally developed in 1924 by Dr. Russell Wilder at Mayo
New kinds of foods called genetically modified organisms, also known as GMOs, has been creating concerns in the American market for the past several years. Scientists today are able to produce new foods by transferring genes from one organism to another. This technique has been developed to improve the shelf life, nutritional content, flavor, color, and texture of foods. While true, people argue that Organic foods are healthier and more beneficial to the human body and the planet than GMOs. Organic