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Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Top 10 Gadgets for College Students

Gadgets are what make life 'cool'. Gadgets are different from electronic devices in that they need not always be about being 'useful' per se. Sometimes gadgets just make life easy, and make using certain appliances and devices a lot simpler than it would have been without the gadget. When I think about the people who invent these über-cool things, I can picture some dude wearing loose beige-colored baggy pants and a cool blue T-shirt with a hooded shirt thrown over it; hair messy like he just got out of bed; sneakers on his feet; Nike sack over his shoulders. And what is in that sack? An assortment of all the gadgets mentioned below, and a lot more I guess! LOL.Gadgets sure are indispensable in today's world, a must to survive, and a prerequisite for college! Find below a list of cool gadgets for college students. The list does not end here though, so feel free to add your own 'WANTED' gadgets to the list! 
Top 10 Gadgets for College Students
1. Laptop
This one hardly needs an explanation. A laptop is a must - even if you have a phone with Wi-Fi, a watch that allows you to browse mail (yeah they actually make those nowadays) or whatever. You do not want to be sitting with your phone to type out your thesis or to complete an assignment. Besides, everything is electronic these days. Gone are the days when students would carry notebooks and stationery to college. It's an e-world; and an e-world begins with computers and laptops.
2. Portable Hard Drive
Even if you have a laptop, not everything you want or need is going to fit in the limited storage space that a laptop offers. Portable hard drives are what you need in such cases. You can have different hard drives to store different kinds of data - music on one, movies on another, etc. Even if you do not have so much data to store, it is always a good idea to back up whatever data you have on the laptop, and a hard drive is a much simpler option to back it up rather than CDs, DVDs and all that.

There's a Shot for That

Two centuries ago Edward Jenner administered the first scientifically developed vaccine, injecting fluid from a dairymaid’s skin lesion into an 8-year-old boy. The English physician knew that dairymaids who contracted cowpox, a comparatively mild skin disease, became immune to the much deadlier smallpox, which at the time killed 400,000 Europeans a year. Jenner hoped the fluid from the cowpox lesion would somehow inoculate the boy against the smallpox scourge. 
His hunch proved correct. Today vaccines (vaccinia is Latin for “cowpox”) of all forms save 3 million lives per year worldwide, and at a bargain price. A measles shot, for instance, costs less than a dollar per dose.

How to Become a Ball Boy/Girl in Tennis

Tennis is an amazing sport. You need great skill to be on the court in a Grand Slam. Not all of us have the expertise of a professional tennis player, but most of us dream to be a part of the action on the court, in a major event. Even if you lack the skills of a pro, you can make your dream come true by becoming a ball boy/girl. When you become a ball person you have the opportunity to be involved in a tennis match, you will be able to interact with the legends of the game, and if you observe keenly, you might also learn a few tricks to win a match.
How to Become a Ball Boy/Girl?
  I have divided this section into 2 parts. The first part will tell you what you should have to become a good ball person, and the second part will tell you what you should do to become a ball boy/girl.
Essentials to Become a Ball Boy/Girl
Becoming a ball person is easy, if you have the following:
Love for the Game
If you do not love tennis, then you might get bored with your work after a few matches. You are not going to earn much, so when your job schedule turns out to be tiring, the only thing that will motivate you will be your love for the game of tennis. To become a successful ball boy/girl you should have a strong liking for the game, without it all your efforts to become a ball person are futile.

Types of Cell Division

Before we get to the part about the phenomenon or types of cell division, let's take a closer look at the two basic types of organic cellular structures that exist in this world as we know it. A cell can be either prokaryotic or eukaryotic, based upon its structural makeup. Prokaryotic cells have a simple, very basic structure as they neither have cell nuclei nor are they equipped with cellular organelles enclosed within membranes. In other words, all genetic matter and other areas partaking in various cellular functions and metabolic activities exist in free states within the cellular boundaries. Eukaryotic cells, on the other hand, are the more evolved, hi-tech counterparts of prokaryotic cells. They have all things that prokaryotic cells lack - cell nuclei holding all the genetic matter of the cells inside them, separate membrane bound organelles that have exclusive and specific tasks assigned to them (such as mitochondria, Golgi apparatus, chloroplasts, etc.), etc.
As you must have guessed by now, the more complex an organism is in terms of its physical structure and physiological functions, the more it is likely to have a eukaryotic cellular structure. This fact is evidenced by the fact the simplest of all life forms such as bacteria and archaea belong to the prokaryotic domain of biological classification. Now that the particulars of the two basic cellular structures have been discussed, let's move ahead to the next segment and take a look at what the various different types of cell division are.

How to Replace an ABS Wheel Speed Sensor

The Anti-lock Braking System (ABS) is one of the most significant parts in the safety package of an automobile. The main job of this technology is to prevent wheel lockup, at a time when momentary wheel rotation is actually needed for proper braking on slippery surfaces. The system functions using several components, out of which wheel speed sensors are one of the most prominent. It is the sensors that keep an eye on the speed of wheels and aid in releasing brake pressure during hard braking. The wheel speed is detected from the toothed wheel by the magnetic sensors, and sent to the ABS computer for brake and release action. If the ABS speed sensor goes bad, the braking will be a kind of irregular and abrupt when braking on low speeds. If you are considering this replacement as a DIY task, wear proper protective gear such as safety eye wear and gloves. Below is an explanation of how to replace an ABS wheel speed sensor.
Steps on How to Replace an ABS Wheel Speed Sensor
Since the sensors use battery power to function, replacing them firstly needs the battery connection to be disconnected. This can be done by disconnecting the negative terminal on the battery under the hood. Place wooden blocks or flat stones in front of every wheel to keep the car stable when doing this repair. In addition, also activate the parking brake. Lift the car using jacks and safety stands on the axle.As the ABS sensors are located behind the wheel assembly, you need to take out the wheel. Use a wrench and turn it counterclockwise on the lug nuts to remove the wheel off the hub. You might need to give a jerk to take the wheel off the assembly. The sensor would be a small black assembly on the hub. If you have just got the sensor changed and are experiencing ABS brake problems, a good idea is to clean the sensor. Clean the oil on the sensor and connectors with a cloth, fix the assembly correctly, and then see if the issue is resolved.
If you are sure about replacing ABS wheel speed sensor, you then need to take out the sensor's cable from the harness connector. The sensor would be joined to the hub by a small bolt which has to be removed. Ensure that you have the same sensor model like the old one to retain proper functioning of ABS. Take the new sensor and fix it on the appropriate place, by tightening the bolt on the assembly. Plug in the harness connector in the respective space on the new sensor.Make sure that there is no visible gap between the toothed wheel and sensor tip. However, the system works fine with a maximum of 0.04 inch gap between these two points. Reinstall the wheel assembly and tighten the nuts securely. Take the car off the jack stands slowly to rest on the ground. Do not forget to connect the negative terminal back on the battery, without which the ABS sensors won't work. During the replacement, you can even think about replacing the sensor cable as well. The total cost of the DIY project might come to around $50, just for the price of a new sensor and cable.Many a times, a simple cleanup of the sensor setup is more than enough to resolve ABS problems. For effective functioning of the system, do a periodical cleanup of the sensors on all wheels. The procedure for replacing ABS sensors on both front and rear axles is much the same as described in the above article. If you are not at all sure about the replacement, it is suggested to take professional help from an authorized service tech.

How to Make Algae Biofuel


The best way to go about understanding a how is to first get a good understanding of the what involved - that's one principle that I believe in and live by! Hence, before proceeding towards understanding how to make algae biofuel, let's take a closer look at what algae biofuel is all about. As the name suggests, this type of fuel is derived from algae and the method most commonly used is breaking down the alga's carbohydrate content via fermentation. This fermentation would result into biologically produced forms of the alcohols ethanol and butanol. Although it is gaining a lot of popularity these days as a potential alternative for traditional fossil fuels, this is so merely due to the fact that the doubled-edged sword of rapid depletion of traditional resources and ever increasing fossil fuel prices is hanging over the head of human civilization by a precariously thin thread.Other than that, algal fuel doesn't offer us much novelty value in terms of low polluting potential. You see, burning algal biofuel releases equally large amounts of carbon dioxide into the air as burning coal or petroleum based fuels do, as algae, being plant forms, need atmospheric carbon dioxide for photosynthesis. When you make fuel out of algae and burn it, this locked up carbon dioxide gets released into the atmosphere, undoing what algae did during its lifetime as a botanical life form. That being said, let's proceed towards finding out all about the algae biofuel extraction process.

Things We Can Do To Stop Global Warming

Global warming is caused due to the rising levels of carbon dioxide in the atmosphere that embraces the radiated heat and stores it, increasing the overall global temperatures to dangerous levels. The rising temperatures have caused the glaciers to melt, thus causing an increase in the sea level. Unpredictable weather and a strange change in climate patterns are also some of the effects of global warming. In fact, according to a recent study, over the past three decades our planet is said to be shrinking at a faster rate. Extreme climatic conditions like drought in some parts of the world while heavy rains in some others and record heat waves in most of the parts have send an alarming message to stop global warming. It is not that we are not trying to curb global warming; the governments of various countries and the UN (United Nations) have already started with their efforts to address the problem of global warming. They are doing their bit, and its time for us to address this sensitive problem on a personal level. Given below are a few things we can do to stop global warming.

Plant Mitosis Vs. Animal Mitosis

Microscopic cells are a vital component of all living organisms and each living body, whether plant or animal, is made up of several such cells which contribute towards carrying out basic life functions. In order to sustain life these cells need to reproduce from time to time, so as to keep their numbers constant. Over time, cells suffer from wear and tear and old age, and eventually stop functioning, so it is extremely essential for these cells to be present in large numbers and in a healthy state in order to sustain life.Cell division is something that has fascinated scientists for many years now, and the ability of these cells to create perfectly identical copies of themselves is truly something to be marveled at. Irrespective of all the wonders of technology around us, the fact remains that something as simple as cell division is a truly magical process. This cell division is what is known as Mitosis, and this is what keeps living organisms alive. Needless to say, the process of mitosis in plants and animals is very different, and this is why one needs to understand the complete difference between plant mitosis vs. animal mitosis.
What is Mitosis
The cells inside plants and animals are known as Eukaryotes, and these are cells that are embedded and housed inside membranes. The most important membrane of this cell is the nucleus, and this is what distinguishes eukaryotes from prokaryotes, and the nucleus is also the component that enables cell division and mitosis. Mitosis is nothing but the division of one single cell into two genetically identical cells, and this is carried out for the sole purpose of continuing life. Mitosis is immediately followed by a process known as Cytokinesis, and both these processes together define the Mitotic Phase of the cell cycle in a living body. The various stages of mitosis are as follows.

    * Interphase: Though this phase is not really a part of mitosis, it generally precedes the whole process of cell reproduction. It does so by preparing the cell for division and also provides it with all the necessary nutrients and proteins.
    * Preprophase: This phase occurs only in plant cells, and it involves the creation of a bisecting line along the center of the cell, and this line shows where the cell will divide. This bisecting line is known as Phragmosome and it is made of cytoplasm.
    * Prophase: In this phase the chromatin (which is the combination of the proteins and DNA of the nucleus) gets divided into two chromosomes which are still attached to each other, and each of these chromosomes start moving to opposite sides of the cell.
    * Prometaphase: This phase precedes metaphase, and in this case the nucleus fragments start breaking and moving towards the chromosomes. The microtubules of the cell also slowly start attaching themselves to the chromosomes and this is a sign that the cell division has truly begun.
    * Metaphase: The microtubules now get attached to the kinetochores on the chromosomes, and they start moving to opposite sides with renewed speed. The alignment between the chromosomes is equal, and the DNA distribution is exactly identical as well.
    * Anaphase: In this phase the chromosomes get cleaved right through the center and they move completely to different sides of the cell. Many stages of elongation and bisection are carried out here for the chromosomes to be divided.
    * Telophase: The last step of mitosis involves the actual splitting up of the chromosomes into two distinct parts, and the cleaning up and the strengthening of the membrane also occurs here. Upon the completion of this stage, the process of mitosis is completed, and the process of cytokinesis then begins.

Pros and Cons of Vegetable Oil as Fuel

As the issue of depletion of non-renewable sources is gaining momentum, researchers have started looking for other alternatives. There is a huge strain on gulf countries to produce oil in adequate quantities to satisfy the need of various countries of the world. Environmental concerns have also played an important part in establishing the need to look at other sources of energy, which are relatively less dangerous for the environmental health. Vegetable oil has emerged as strong contenders as an alternative fuel, however their use in commercial vehicles is still at an early stage.Vegetable oil can be used as an automobile fuel as there is a lot of waste that comes out from cooking and other agricultural products. Vegetable oils that are used as a fuel come under two categories - Straight Vegetable Oils (SVO) and Waste Vegetable Oils (WVO). As the name suggests, SVO is the oil that is available in the grocery stores and this oil can work in diesel engines after making some necessary modifications to the engine. WVO on the other hand, is the oil that has been used for cooking. The global food industry produces WVO in huge amounts, which when purified can be used as a fuel. There are numerous advantages of using vegetable oil as a fuel but there are some challenges involved before it can be used in automobiles on a large scale. Let us take a look at the pros and cons of vegetable oil as fuel.

How to Choose Wireless Intercoms for Homes

Tired of running errands around your house, are you? Are you looking for an electronic device which can help you directly communicate with visitors at the door? Then what you need to get installed is a wireless intercom system. Of the many wireless communication gadgets that abound the electronic market, ranging from cell phones, wireless routers, wireless doorbells and cordless phones, the gadget designed for easy and free intra-home or intra-office communication is a wireless intercom system. Through this Buzzle article, I provide you with a guide explaining how to choose wireless intercoms that ideally suit your requirements. 
About Wireless Intercom Systems 
Before talking about how to select a wireless intercom system, let me describe what this gadget can do for you. Designed to replace wired intercom systems used in homes and office, wireless intercom systems communicate over radio waves to offer short distance connectivity. A typical system consists of multiple transreceivers that provide voice communication facility. From a unit installed in your bedroom, you may call up your children in their bedroom or talk to anybody visiting at the door. Some of these systems offer video calling, which lets you make calls within your sprawling estate, while also functioning like a CCTV monitoring mechanism.It can not only save you time, but also provide practically free communication. For large estates, a wireless intercom system is an absolutely essential installation. They come in various types ranging from wireless door intercom systems to baby monitors. If you have decided to buy such a system for your home, the wireless intercom buying guide presented in the next section will interest you.

Earth's Crust Facts

Most of us know that the interior of the Earth is made up of four different layers; the crust, mantle, inner core and the outer core. You may also come across some sources which stress on the fact that the Earth's interior is made up of three layers; the crust, mantle and the core. (These sources further divide core into outer core and inner core.) Few of us are also well-versed with the fact that three of the four main layers of the Earth are in solid state, while the fourth one is in liquid state. Beyond this, however, our knowledge about the Earth's interior hits a roadblock; and this loophole is exposed when we try to get to the details of the subject. The crust, i.e. the outermost layer of the planet, happens to be one such less known attribute of our planet, and we will be stressing on the same from here on.
Interesting Facts about the Earth's Crust
In geological studies, the term 'crust' refers to the outermost layer of the planet or other celestial bodies such as natural satellites. In case of the Earth, it is the layer on which we live, typically characterized by the presence of gelogical landforms such as mountains, plateaus, seabed, etc. The Earth's crust is made of three types of rocks; igneous rocks, sedimentary rocks and metamorphic rocks. It is the thinnest layer of the Earth, and typically forms mere 1 percent of the total volume of the planet. As you go through more of such Earth's crust facts given below, you will come across some of the most amazing attributes of our planet that you must have never heard before.
* In a broad sense, the Earth's crust is divided into two types - continental crust, which forms continents and continental shelves, and oceanic crust, which forms the surface of the oceans basins on the planet. While the continental crust is made up of felsic rocks or sial (rich in silicon and aluminum), oceanic crust is made up of mafic rocks or sima (rich in iron and magnesium).
    * In terms of volume, the continental crust-oceanic crust ratio stands at 70:30, with the former constituting for 70 percent of the crust. The thickness of the Earth's crust varies from one region to another; with the thickness of continental crust ranging between 20-30 miles, and oceanic crust ranging between 3-6 miles on an average, and that explains the 70:30 ratio between the two.
    * In regions like the Himalayas in the Indian-subcontinent and Andes in South America, the thickness of this layer exceeds 20 miles; and this can be attributed to crustal thickening as a result of igneous activity and tectonic over-thrusting during collision.
    * As in case of the crust of planets like Mercury, Venus or Mars, or that of the Moon, even the Earth's crust is formed as a result of igneous processes, and that explains why it is richer in incompatible elements as compared to mantle.
    * As we go deeper inside the crust, the temperatures begin to increase; and typically reach somewhere between 392°F and 752°F at its boundary with the mantle. The temperature rise is recorded to be somewhere around 50°F for every km in the upper crust; and from thereon the geothermal gradient becomes even steeper.
    * The outer crust of the Earth is broken up into regions known as tectonic plates. The movement of these plates, which float on top of molten rock in the interior of the Earth, tends to trigger earthquakes and form mountains on the planet.
    * The Earth's crust displacement theory, which highlights polar shift and states that a catastrophic shift of the Earth’s lithosphere in somewhere around 10,000 BC., triggered the formation of Antarctica, was put forth by Charles Hapgood.
    * Interestingly, the crust happens to be the only layer of the Earth's interior which can be studied by drilling. Earth's core and mantle, on the other hand, are mapped by studying the behavior of seismic waves beneath the surface of the Earth.
    * The deepest hole ever drilled in the Earth's crust, or the deepest artificial point on Earth, happens to be Kola Superdeep Borehole (KSDB-3) in the Kola Peninsula, in Russia, with a depth of 12,262 metres (40,230 ft).
    * Even though the crust doesn't quite have direct influence on the lifeforms, it indirectly means a lot to all the species on the planet as several natural resources come from it. At the same time, the movement of crust is also known to play a crucial role in determining the topography of the planet.

How to Update Android OS

Quick, which is the most popular operating system for mobiles and tablet PC's? Even a five year old will answer this easy-peasy question, it's the Android OS, represented by the little green alien looking thingi. The Android OS entered the mobile OS sphere and things have never been the same. And the Android OS platform just keeps getting better and better, with bugs and errors being fixed and lots of user-friendly features being added with every new release. The current and latest version is the Android 2.3 or Gingerbread but everyone is looking out for the new 2011 Android update, Ice Cream Sandwich. So, whether you are stuck in the caveman era with an Android version of 2.1 on your phone or gearing up for the Ice Cream Sandwich, below is an easy "how to update Android OS" explanation to make the process of upgrading, a piece of cake (or a piece of ice cream sandwich)

How to Watch Live TV on iPhone

One of the reasons why Apple iPhone is the preferred smart phone for most is its versatility. It's not only an incredible phone, but also a great camera and a complete entertainment center to listen to your favorite music, watch movies and play games. Besides this, it also provides the facility to surf the web through a 3G or WiFi connection. Now you can add one more feature to this list, which is live streaming TV! There is no need to switch on your PC or your TV to catch up with your favorite TV shows, if you have an Apple iPhone. In this Buzzle article, I show you how to watch live TV on iPhone and watch your favorites shows on the go.
How to Watch Live TV on Apple iPhone?
The seamless connectivity offered by WiFi technology and Internet, combined with the facility of inter-convertibility among various video formats, has actually made it possible to transmit live TV on mobile phones and other portable devices. There are several ways in which you can catch live TV action on your Apple iPhone and you will find them listed below.
Buy Channel Specific Apps
One of the easiest ways of watching live action on your iPhone is by purchasing and installing channel specific apps. These apps provide you with live broadcast of TV channels by streaming content over the Internet. One example of such an application is Sky Mobile TV, which lets you catch live action from all of the Sky sports channels for a fixed monthly subscription.The TV.com application, launched by CBS Interactive on App Store, lets you watch shows from CNET TV, CBS and other channels of the network absolutely free on your iPhone. You can find such iPhone apps to watch shows from most of the major TV networks. All you have to do is buy them using your iTunes account, install them and start receiving all television broadcasts through your WiFi or 3G Internet connection.

Holographic Data Storage

Nowadays, blue ray DVDs and hard drives are types of computer data storage devices which have the most capacity. The information in all these devices is stored in the form of bits. Data is recorded and read one bit at a time, which makes data processing slow. Have you imagined a technology far more advanced than these mediums? One of such technologies that is considered to replace today's data storage systems is 'holographic data storage'. Read on, to get to know more about holographic data storage devices.
Holographic Data Storage Invention and Development
In the early 1960s, a scientist named Pieter J. van Heerden brought forth the idea of creating a holographic system for fast and large data storage. After some years, scientists working at RCA Laboratories, managed to record over 500 holograms in a lithium-niobate crystal and roughly another 500 images onto polymer material. Nevertheless, lack of cheap materials and the development of magnetic data storage components caused this idea to be put on hold.InPhase Technologies, in the mid-2000s, publicly announced its holographic storage device. However, in February 2010, the company business was stopped, as Colorado government took over its assets for not paying taxes on time. Recently, in April 2009, GE Global Research exhibited their holographic data storage device. It is believed that InPhase and Nintendo have entered a contract to come up with holographic data storage systems for video games.

Characteristics of Jovian Planets

According to the Solar Nebula hypothesis for the formation of the Solar System, the Solar system was nothing but a rotating mass of clouds, in the beginning. Primarily composed of hydrogen and helium, these clouds also had traces of heavier elements. As the speed of rotation of the cloud mass or nebula increased, heat and pressure began to develop within. This gradual build up of heat and pressure caused the nebula to explode. The center of the nebula, known as the protosun, was the region of highest temperature and the matter around this protosun was automatically reduced to the gaseous state. However, regions close the circumference of the nebula were cooler and it was here that matter was found in the condensed form.After the formation of the Solar System, the gravitational force of the sun gradually pulled the masses of higher density towards it due to which the planets made of rocks began to revolve in smaller orbits around the sun. The planets made of gaseous matter moved to orbits farther away from the sun. Revolving in their orbits around the sun gave the planets a spherical shape. The immense gravitational pull of the large gaseous planets attracted matter scattered around the solar system and this matter, both rocks particles and gases, began to revolve around these planets and thus the rings and many moons of these planets were formed.

Uses of Solar Energy

We all know that solar energy is one of the most powerful and inexhaustible sources of energy. The need to explore alternative sources of energy arose when large scale consumption of energy started taking place in the form of fossil fuels, coals, gas, etc. These are forms of exhaustible energy as they are limited in supply and will end some day. Solar energy or in layman's language, the energy derived from sun rays can not only be replenished but it will never get exhausted. After considerable research and analysis, scientists started utilizing solar energy for various purposes. We shall study the common uses of solar energy in a broader sense from the following content.How does Solar Energy Work
Before going into the usefulness of solar energy, we shall study how this system works. Solar energy or the radiant energy is harnessed by human beings to serve a plentiful purposes. This energy is put forth to use by techniques that utilize various theories of physics and chemistry. The crude form of energy gets converted to useful source by the photovoltaic cells or heat engines. The energy captured by the solar cells (mostly made up of silicon) is converted to electrical energy that is useful for many purposes. The mechanism by which the solar cells work is a physicochemical process that helps in production of energy. Now this energy is harnessed to carry out a wide range of day to day works.
Solar Energy Uses
The concept of utilizing solar power has large industrial applications. If you consider solar energy over exhaustible sources of energy, then the advantages are many. Solar energy is cost effective and it requires no additional expenses in harnessing. The only cost incurred is in manufacturing the cells. The biggest advantage is that solar energy is an infinite source and we would never run short of in near future. Unlike other sources of energy (carbon dioxide and coal), solar energy doesn't cause pollution. Thus, it is completely environment friendly. It is due to these facts that future uses of solar energy are on the positive side. Let's find out the uses of solar energy from the content below.
* Micro hydro system is a mechanism by which photovoltaic (PV) cells are used for running turbines to generate hydro power. PV systems are largely incorporated in remote areas for distribution of drinking water. The use of solar pumps is very common in such areas. Hospital and water supply zones are also equipped with PV systems for carrying out desalination. The only thing that they need to do is to keep battery storage to prevent running out of supply.
* Solar energy being the cheapest source of energy is also used in small scale industries for running low duty machines. If it's used for heavy duty electrical loads then a hybrid power system is set up that serves to connect the photovoltaic cells to diesel generators. It is also used in radio stations and T.V signaling stations to garner power for generating electricity. Solar energy finds a large application in the power light houses and in aircraft warning lights. Being considerably cheap, it's also used for lighting traffic signals, buoys and offshore navigation purposes. These are some of the direct uses of solar energy.
* Photovoltaic mechanism is employed for making solar cookers and home heating appliances. The advantage of solar energy is best employed for this purpose. Solar panels are raised on roof tops for harnessing solar energy. Some other home appliances that run on solar energy are solar cookers, solar water heaters, solar refrigerators and solar composting toilets. You can check out the utility of these products from home improvement shops marketing solar energy products.

Extraction of Trimyristin from Nutmeg

http://t2.gstatic.com/images?q=tbn:ANd9GcQ6UJIsnSGGyHiPvhMPdhZ-Kfc7gEB8bffs_0mg17rN64XWzWCESo it's practical time and the laboratory seems to have assumed a personality of its own, an ominous one at that, as the chemistry sessions seem to be getting hotter than ever in tandem with the climate out there, eh? Well, well, I don't really have the authority to say 'no worry, no sweat; let not studies get you upset!' - I wish I were your college principal but then where's the guarantee that I won't turn into an academic sadist (a thousand apologies if any of you readers happen to hold the venerable position but you see, if trashing your good name is what it takes to get the attention of young scholars these days, so be it!) as well?! However, in such a case, the least I can (and will) do is to share some useful information that I picked up during my own college days with all you future scientists out there! So, here's a brief and easy tutorial on extraction of trimyristin from nutmeg for a starter.
Isolation of Trimyristin from Nutmeg
Before we proceed towards the isolation procedure, let me give you a brief overview of what trimyristin is. It is a chemical derivative of myristic acid, a triglyceride to be specific. Myristic acid, in turn, is a saturated fatty acid and is found in abundance in nutmegs. In fact, the term myristic acid comes from Myristica fragrans which is the scientific name for the most common commercially available species of nutmeg. In fact, the genus to which nutmeg species belong is simply known as Myristica! Coming back to trimyristin (before this chemistry tutorial gets any more diverted and turns into a full fledged botany lecture!), this ester (Oh! Did I miss telling you that? Sorry!) is the chief constituent of nutmeg butter, accounting for as much as 75% of its total composition.

Shoreline Biome

http://t0.gstatic.com/images?q=tbn:ANd9GcRJ5Pq2DlpeLTkqtUVky-fg1nVx-LeNTLh7z6ZmhHhx2nSvE0w_A shoreline is formed when the water merges with the land. Land is often submerged in water and gets exposed when the water pulls back. This part of the land and water is a habitat to many living organisms and aquatic animals. As known to many of us, water is a source of life and as it makes its way to the land it also brings along different life forms with it. Even the shallow portion of the shore is home to many different, unique and interesting animals and plants. Shorelines are not only shelter to numerous life forms but also a source of food to humans and birds like seagulls. There are different types of shorelines all over the world. Some are rocky while some are sandy shores and life forms are different on these two types of shorelines. Lets us now take a look at different shoreline biomes on these two types of shorelines.
Sandy Shoreline Habitat
Sandy shorelines consists more of soft sand, shells and small rocks. These types of shorelines hold interesting yet unstable life forms beneath and around it. Changes in the level of tides creates an intertidal zone wherein many marine animals seek shelter. During the time of high tide, these marine animals come out to feed themselves as the tide brings food with it. As the day passes, the approach of low tide sends away the marine animals back to their shelters, where they spend most of their lives. The animals that are found on the shore live their life beneath the sand and often make an appearance during high tide. Sandy shoreline life has adapted itself very well to the high and the low tides. Some of the interesting life forms found on sandy shorelines are as follows:

    * Sea Star
    * Snails
    * Sea Turtles
    * Horseshoe Crabs
    * Egrets
    * Sea Oats
    * Ghost Crabs
    * Smooth Bay Shrimp
    * Hermit Crabs
    * Marshes
There are many organisms that make burrows into the sand and only come out at the time of low tide for food. Sand provides a strong shelter for these living organisms as it keeps them safe from other predators and even the wild sea waves.

How do Elevators Work

One invention that has proved to be a boon for human beings is the elevator. Be it offices, hotels, hospitals or homes, elevators can be found everywhere. The main function of these machines is to transport people and things from one floor of the building to another. With the pressing of a few buttons, you can reach the desired floor without having to climb stairs. In the earlier days only high rise buildings and hospitals had elevators. But these days, elevators are being installed even in homes. If you are planning to install one at your home then check the home elevator costs so that you can plan and purchase the elevator for your home according to your requirement. Let us now take a look at how elevators work.

Xbox 360 Red Ring Meanings

The Xbox 360 is one of the world's best-selling consoles. With a high quality graphics delivery, amazing and captivating gameplay and gazillions of game titles, every gamer's dream machine is easily this console. Unfortunately, particular errors in the form of flashing red lights, are an Xbox 360 owner's nightmare. In this article, we analyze the Xbox 360 red ring meanings in detail, to find out the cause behind such flashing lights. 
Red Flashing Light Meanings
The light indicator on the Xbox 360 is circular, with 4 main quadrants, situated around the power button. The power button which turns green when the console is turned on. When the system is completely on and functioning normally, based on the number of attached controllers, the quadrants will turn green. The trouble starts when they turn red. There are different Xbox 360 red ring meanings, based on number of quadrants and which quadrants have turned red. They are the following:
One Quadrant is Red
Sometimes the message "System Error. Contact Xbox Customer Support." appears. An error code will appear in the customary "Exx" format. For example, E74 is an error code, which occurs when the lower-right quadrant specifically is flashing red. E74 code means the scaler chip (sends Xbox signal to TV) has failed and it needs professional expertise to repair it. The warranty for such a code is 3 years from the purchase date. If your console comes under the warranty, contact the Xbox 360 support or visit the official site to register a complaint. A company representative should get in touch with you. If your console's warranty has expired, then you will be charged a fee for its repair.

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