...other forms of energy, such as solar, wind and biodiesel. As of 2012, renewable energy accounted for 11.5% of total energy production (Global Energy Statistical Yearbook, 2013). Algae, a 3rd generation biofuel, have not been brought forward by the government due to the lack of research and development capabilities in the country (Winston, 2013). Despite this, there is good reason to believe that algae are ideal for energy production in the future. It yields 7 to 31 times more oil than palm tree (Shay, 1993) and can be cultivated anywhere (Demirbas, 2010). Recently, developing countries like Brazil have taken steps towards algae-biofuel production. Within three years, there are already projects involving the construction of an algae-fuel factory, to be...
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...Biofuels and the underlying causes of high food prices Alessandro Flammini October 2008 The development of this report was coordinated by Maria Michela Morese and Jonathan Reeves (Global Bioenergy Partnership Secretariat). The views expressed in this report reflect those of the author and do not necessarily reflect the views of the Global Bioenergy Partnership or those of the Food and Agriculture Organization of the United Nations. For info: alessandro.flammini@fao.org ACRONYMS ADB Asian Development Bank DDG Dried distillers grains DEFRA Department for Environment Food and Rural Affairs EU European Union FAO Food and Agriculture Organization of the United Nations GHG Greenhouse Gas OECD Organization for Economic Co-operation and Development PRC People’s Republic of China UAE United Arab Emirates US United States of America USDA Department of Agriculture of the United States WFP World Food Programme of the United Nations WTO World Trade Organization Table of contents EXECUTIVE SUMMARY ..................................................................................i BACKGROUND.....................................................................................1 THE CAUSES.......................................................................................4 THE CLIMATE ISSUE ......................................................................... 4 INTERNATIONAL STOCK LEVELS......................................................... 5 INCREASED GLOBAL FOOD...
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...Bio-fuels: a debatable topic A warm welcome to respected dignitaries and all the participants who are present here today, My name is Swaroop. I’m pursuing M.Sc (ag) extension. I remember that my grandfather used to quote “well done is better than well said” a statement given by Benjamin franklin. Biofuels are they as green as they claim to be? It is well said -yes this fuel has a component of BIO, but is biofuel well doing in meeting all its requirements? Hmm…a debatable topic. As context of my argument, I strongly argue that they are not eco-friendly-when completely relied upon. So what are Biofuels? A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms. Examples of this carbon fixation occur in plants and microalgae. These fuels are made by a biomass conversion (biomass refers to recently living organisms, most often referring to plants or plant-derived materials). This biomass can be converted to convenient energy containing substances in three different ways: thermal, chemical and biochemical conversion. Biofuels have increased in popularity because of rising oil prices and the need for energy security. This biofuels are 1St and 2nd generation. 1st generation conatins ethanol, biodiesel, vegetable oil mostly. The second generation biofuels are mostly made from the lignocellulosic biomass or woody crops, agricultural residues or waste. Taking a brisk turn towards my argument, There are various...
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...(8) Many experts today believe that bio-fuel production causes more problems than it solves. Describe the main reasoning behind this view. · Bio-fuel production causes loss of tropical forest and other natural habitats, depletes oil, accelerates climate change, and exacerbates world hunger. · To grow biofuel crops, there needs to be cutting and burning of forests · You need burning of oil based fuel and use of petroleum based fertilizers to grow biofuel crops which leads to less oil which leads to a new for more biofuel so you burn all the forests and you need the oil to regrow them again · Deforestation – especially in South America and Indonesia accounts for 20% of all carbon emissions · Farming biofuels produces nitrous oxide which is bad for climate change · Large scale burning and cutting to grow crops –including biofuel crops- also causes adjacent forest decline: it causes reduced transpiration and hence reduced rainfall in adjacent forest areas result in drought cycle which accelerated death of trees which further reduces transpiration and rainfall. The accelerated death of trees results in warming of forest floor and accelerated decomposition of soil organic matter and explosion of termite population son dead tree trunks and branches. Both of this releases huge quantities of methane and carbon dioxide · The use of biodiesel from algae is not as green as it seems. It can generate four times the greenhouse emissions from regular...
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...CHAPTER 3 METHODOLOGY 3.1 Introduction The most common way to produce Biodiesel is via Batch Trans-esterification which refers to a catalyzed chemical reaction involving vegetable oil and an alcohol to yield fatty acid alkyl esters (i.e., biodiesel) and glycerol. Trans-esterification of triglyceride with alcohol to form biodiesel. 3.2 Raw Material 2.1. Chemicals Methanol (99-100%), ethanol (99-100%), sodium hydroxide pellets (96%), potassium hydroxide pellets (>84%), phenolphthalein (PH 8.2-9.8), acetone (99%), diethyl ether , hydrochloric acid (37%), iodine , sodium iodide, bromine, carbon tetrachloride, glacial acetic acid, potassium dichromate etc. All the chemicals were used as analytical reagent grade. 2.2. Raw Materials Waste cook oil (palm oil and soybean oil) was collected from local restaurants located in Sylhet city in Bangladesh. The oil was filtered and its properties were measured. 2.3. Preparation of Biodiesel by Three-step Method Three-step method consists of Saponification followed by acidification to produce FFA and finally esterification of FFA to produce biodiesel [12]. 2.3.1. Saponification For saponification process required amount of WCO was taken in a three necked flask and mixed with different stoichiometric amount of aqueous sodium hydroxide solution. The mixture was heated under reflux with vigorous stirring at temperature of 100°C for different time. The reaction was stopped by cooling...
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...Jalen Foster Mr. Mundth ENG 107 16 December 2011 Biofuels on Mother Earth: Where Are They? The fossil fuels provided by our Earth are extremely limited due overuse by humans. Scientists thought the problem was solved with a new man-made fuel that could replace fossil fuels; they called them bio-fuels. With bio-fuels people can power cars, power factories, power houses, and power many other structures around the world. But lately these biofuels are becoming harder to come by, and they cost more than anticipated. Scientists have done several studies on why this is happening, but the answer in very clear. Although we have millions of resources on Earth we have managed to decrease those resources by more than half, and it is not all because of global warming. It is really because we have over used them as a people. Firstly, global warming should not have the full blame for the depletion of bio-fuels. Global warming is the worlds’ temperature increase, which has been found to be predominantly caused by humans as well. The “Green House Gases” aka carbon dioxide, methane, and nitrous oxide are created from our cars, industrial buildings, houses, etc. In a movie called An Inconvenient Truth the issue was that people are emitting so much carbon dioxide that for the first time, carbon dioxide levels has risen over 300 parts per million. This comes from billions of cars running cars being driven across the world and the millions of major factories being ran across the world the...
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...IT320 Unit 5 HW 1. When a router is first powered on, it completes a four-step initialization process: 1. Preforming a power-on self test (POST) 2. Loading a bootstrap program 3. Loading an IOS 4. Loading a configuration file The last three of these steps require the router to copy the files into RAM. Normally, most routers load an IOS image that is stored in flash memory and an initial configuration stored in NVRAM. 2. Routers use the following logic, in order, to attempt to load an IOS: 1. Load a limited-function IOS if the configuration register’s last hex digit is set to 0 or 1. 2. Load an IOS based on the configuration of boot system commands in the startup-configuration file. 3. Load the first file in flash as the IOS. 4. Use TFTP broadcasts to find a TFTP server and download an IOS from that server. 5. Load a limited-function IOS from ROM. In Step 1, the configuration register is a16-bit number that Cisco routers store in a hidden area of NVRAM. It can be set in a couple of ways and can be seen using the show version command. The most commonly used way to set its value is to use the config-register global configuration command. Routers use the 4 low-order bits of the configuration register as the boot field, which tells the router what to do in the first of the preceding five decision steps. If the value of the field is set to 0, the router loads the ROMMON (ROM Monitor), which is used for password recovery. If the value is set to1, the router loads...
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...Knowledge Assessment Matching 1. Remote Desktop E. Based on the former Terminal Services 2. System image backup J. Saves data to a VHD file 3. BranchCache A. Conserves WAN bandwidth 4. Distributed cache mode B. Files cached on each client 5. Volume shadow copies H. Previous versions 6. Incremental backup D. Files changed since the last backup job 7. Windows RE I. Accessible from a Window 7 installation disk 8. Hosted cache mode C. Files cached on a central server 9. Windows Remote Management G. Executes PowerShell commands on remote computers 10. System restore point F. Configuration settings and registry information Multiple Choice 1. Which of the following service priority guidelines are not accurate? D. Departmental issues should be rated according to the function of the department. A problem with a computer belonging to a department that is critical to the organization, such as order entry or a customer service call center, should take precedence over a problem with a computer belonging to a department that can better tolerate a period of down time, such as research and development. 2. Place these troubleshooting steps in the correct order, using the procedure described in this lesson as your guide. B, D, C, A. B: Establishing the symptoms is the first step in troubleshooting any problem to determine exactly what is going wrong. D: Select the most probable cause. Once...
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...BitLocker Drive Encryption Overview 73 out of 98 rated this helpful - Rate this topic Applies To: Windows Server 2008, Windows Server 2008 R2, Windows Vista BitLocker Drive Encryption is a data protection feature available Windows Server 2008 R2 and in some editions of Windows 7. Having BitLocker integrated with the operating system addresses the threats of data theft or exposure from lost, stolen, or inappropriately decommissioned computers. Data on a lost or stolen computer is vulnerable to unauthorized access, either by running a software-attack tool against it or by transferring the computer's hard disk to a different computer. BitLocker helps mitigate unauthorized data access by enhancing file and system protections. BitLocker also helps render data inaccessible when BitLocker-protected computers are decommissioned or recycled. BitLocker provides the most protection when used with a Trusted Platform Module (TPM) version 1.2. The TPM is a hardware component installed in many newer computers by the computer manufacturers. It works with BitLocker to help protect user data and to ensure that a computer has not been tampered with while the system was offline. On computers that do not have a TPM version 1.2, you can still use BitLocker to encrypt the Windows operating system drive. However, this implementation will require the user to insert a USB startup key to start the computer or resume from hibernation, and it does not provide the pre-startup system integrity verification...
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...Introduction To sum of the differences between ROM RAM BIOS and Post I will simply define the basis of each component while defining what they do. ROM is short for (Read-only Memory) Memory which data is prerecorded on a computer. ROM is simply data that cannot be eliminated even when the computer is off. When working in ROM it is difficult or nearly impossible to change. BIOS is short for the acronym (Basic Input Output System) it is a program which stores detailed information and enable the computer to boot. In addition a ROM chip located on the motherboard, it lets you access the basic setup and ensures that the BIOS will readily be available and will not de damaged by disk failures. RAM is (Random Access Memory) Memory that can be access randomly memory that can be access without touching preceding bytes. RAM is the typical memory found in most computers or printers. In addition, RAM is a volatile memory that requires power to keep information accessible. If power is lost, then memory can be lost. Lastly Post is the self-test which is activated by Bios. The post is designed to run checks on the motherboard. It necessary to use ROM for the BIOS because the ROM retains information on the computer even while shut down whereas RAM does not. Whenever a computer is being use the information is being stored on the RAM if the is ever a power shortage or the computer lose power the information is lost. RAM does not store memory when there is no power. POST beep codes make...
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...Motherboard Answer the following questions 5 April 2015 Tanweer Haroon DeJong May The major components of the motherboard are as follows: memory and their slots which is the computer’s memory (RAM) and is one of the most important parts of the system board. The number of chips depends on the type of computer and its capacity. Expansion cards are a typical component of non-integrated system boards a graphic card is a perfect example, but this can be integrated into the motherboard. CPU and slots is the central processing unit and it’s a highly prolific part of the computer and is located on the right of a motherboard and can be identified as a result of the heat sink or cooling fan directly on it. BIOS chip directs the CPU with respect to how it relates with other parts of the computer. Its basic input and output system chip or integrated circuit is fixed on the board and is easily identifiable. CMOS battery, the complementary metal oxide semiconductor is a small battery on the system board that powers the CMOS memory. Power supply and connectors is the electrical unit of the system and if it’s bad the system will not work. Keyboard connector are located on the motherboard and there are two main types. The AT has a round connecting interface into the motherboard and the PS/2 connector is rectangular in shape and smaller. Modern motherboards come with both. Mouse connector its connecting port is located on the motherboard and its interface is usually round. Floppy...
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...Fall BIOS – Instructor: Mrs. Nicholas – NT1110 – 1 May 2014 Lavon Hawkins BIOS SUMMARY Lavon Hawkins BIOS SUMMARY BIOS BIOS: The BIOS is software which is stored on the motherboard. It tells the computer how to perform a number of basic functions such as booting and keyboard control. It is also used to identify and configure the hardware in a computer such as hard drive, floppy drive, optical drive, CPU, memory and so on. CMOS: The complementary metal oxide semiconductor is the type of semiconductor chip on the motherboard which stores the system information and computer settings such as date, time, hard drive settings, boot sequence, parallel part settings, on-base audio and video etc. Firmware: Firmware is a combination of software and hardware. Computer chips that have data or programs recorded on them are firmware. POST: The POST or power on self-test is a test the computer does when it first boots up. It’s to verify all the hardware is working. If all checks out it usually gives a single beep. If not a beep code could come up. Beep Code: A beep code is an audible code which is generated during the POST (Power On Self Test) when the BIOS has an issue but has not made it all the way up the boot sequence that it can give you the error as a message on the monitor BIOS update: Updating the BIOS can fix or enhance aspects of a computers performance. Or it may provide support for newly installed hardware. 1 Flash BIOS update: A BIOS chip...
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...products that are new and cheaper than the ones that came before. This way a company is able to take a product that is already out on the market and take it apart piece by piece and see how it works so they can rebuild it cheaper and more efficiently. One famous example of reverse engineering is in the mid-1980s Phoenix Technologies Ltd wanted to produce a BIOS for PCs that would be compatible with the IBM PCs proprietary BIOS. To protect themselves from any charges of illegally copying their BIOS they used what is called a clean room. With the clean room approach there are two teams; one that studies the BIOS that they are trying to recreate and they come up with a detailed report of what it is exactly the BIOS does without using any of the code or anything that will link their description to that particular BIOS. Then this description is given to another team that has not looked at the code of the BIOS they are recreating and they build whole new BIOS off those instructions. This way even if some of the code is the same it will not be a copy right infringement since the second team who actually wrote the code and built the BIOS...
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...on a motherboard? Why can these busses not be replaced with a single bus? • With 64-bit busses available, why should 32-bit busses be provided as well? The motherboard of a computer is also known as the System Board. The circuit board is the platform on which all the hardware of the computer is connected. It is said to be the most important part of the computer. The expansion cards, and slots, BIOS chip, CMOS battery, jumpers and DIP switches, heat sink, PCI, Power connector, on board disk drive connectors, memory slots, keyboard connectors, Peripheral ports and connectors are all the things that one may find on the motherboard. The expansion cards are a typical part of nonintegrated system board. An example of this is a graphic card. Memory slots are one of the most important part of the system board. The number of memory chips on a motherboard depends on the type of CPU and its capacity. The slots are usually white and black and close in proximity to one another. The BIOS chip is also a very important part of the system board. It directs the CPU to other parts of the computer. BIOS and its manufacturers name are usually written on the chip. The CMOS battery or (complementary Metal Oxide Semiconductor) is a small battery on the system...
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...that starts the “chain reaction” which ends with the entire operating system being loaded is known as the boot loader (or bootstrap loader). The term creatively came from early designiners imagining that before a computer “runs” it must have it’s “boots strapped”. The boot loader’s only job is to load other software for the operating system to start. Often, multiple-stage boot loaders are used, in which several small programs of increasing complexity sequentially summon one after the other, until the last of them loads the operating system. Boot Devices The boot device is the device from which the operating system is loaded. A modern PC BIOS (Basic Input/Output System) supports booting from various devices. These include the local hard disk drive, optical drive, floppy drive, a network interface card, and a USB device. Typically, the BIOS will allow the user to configure a boot order. If the boot order is set to: 1. CD Drive 2. Hard Disk Drive 3....
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