Microbiology Essay Example for Free

Microbiology Essay 1.List five environments where you are likely to find microbial growth: Lakes, soil, oceans, tundras, deserts 2.How do microbes contribute to soil fertility? The decomposition that microbes take part in help release mineral nutrients, such as potassium and nitrogen, from dead organic matter and allowing primary producers the nutritional access. They also produce CO2 and CH4 to release into the soil and atmosphere. 3.Describe the growth you observed in each of your samples: Soil: I chose an area of soil outside of my apartment to do my soil sample. I noticed that there were a few prominent growth in this dish. The majority of them seemed to grow in a snowflake shape and were mainly white. Whether they were different types of microbes or just one, I am not sure. There was one growth that had a black center and a white border that was shaped like a snowflake. Air: I left the dish uncovered in my kitchen and the growth was interesting. I noticed that there were three distinct microbial growths that were prominent along with a small smattering of white along the petri dish. There was one growth that was a dark grey colour with a mottled appearance, another that was a white colour with a mottled appearance, and finally one that was a tan colour with a bubbly appearance. Water: There is a small and very stale pond near my house that I took the water sample from. This was by far the most disgusting of the three observations. The growth I observed looked like a very dark Picasso painting. There was a black coloured colony that had a fuzzy appearance, there was a dark green coloured colony that looked wrinkled and somewhat mottled, there was a colony with a black center and white surrounding it with a wispy appearance, and there was a white colony with a very feathery appearance. 4.What were the differences between the growths in each plate? The similarities? The differences in the growth plates is that each of the three environments had their own bacteria that were specific to it. It seems as if the water sample had the most growth due to the fact that it was continually exposed to the elements and people. The soil one seemed as if it may have some fungal microbes due to the snowflake like appearance. There were similarities between the soil plate and the water plate. It could be that the droplets from the water reached the soil area and that their microbes could be colonizing there. I saw no similarities between the air plate and any of the other two. 5.What is the difference between and autotroph and a heterotroph? The difference between an autotroph and a heterotroph is that an autotroph is capable of deriving its energy from light using photosynthesis or he oxidation of reduced organic or inorganic molecules. Heterotrophs are not able to produce heir own food and are required to feed on other organisms in order to obtain their energy. 6.Define the following terms: Photoautotroph – Capable of using ligh as an energy source and CO2 as a carbon source Photoheterotroph- Uses light as an energy source and reduced organic compounds as a carbon source Chemoautotroph- Uses inorganic chemicals as an energy source and CO2 as a principal carbon source Chemoheterotroph- Uses organic compounds as an energy source as well as a principal carbon source 7.What is nitrogen fixation? What role do microbes serve? Nitrogen fixation is a process where atmospheric nitrogen is converted into a useable form of nitrogen (ammonia). Microbes serve a role in nitrogn fixation because they are the only organisms capable of performing this process. 8.Define the following terms: Hyphae- Tube like structures with a rigid cell wall that protects the cell membrane Mycelium- A structure that is composed of intertwined thread-like hyphae. This is the primary structural component of the fungi buried in thhe soil/organic matter that the fungus is living on Septate- Also known as cross-walls, they divide the hyphae into sections giving them the possibility of containing more than one nucleus in addition to the usual organelles found in these cells. 9.What type of morphological features were you able to see in your fungal wet mounts? In your stained preparations? In the wet mount, it was very obvious that the organisms growing on the food were of fungal origins. There was a network of hyphae that was branching out and tangled up around the slide. In the stained preparations, I could see the individual sections that are divided by the septae. Within these sections, if you went up to a higher powered lens, you could see dark little spots which I am assuming are the nuclei. I also saw that there were tiny little buds that were present throughout the hyphae tangle. 10.List the four main classifications of fungi and describe each group Chytridiomycota- The smallest and simplest fungi. They are considered the ancestors of modern fungi and are primarily aquatic organisms. The majority are decomposeres but come can be plant pathogens. Zygomycota- Mostly terrestrial fungi that live in soil or decaying plant and animal matter. They are mainly parasites of plants, insects, and animals. Ascomycota- The largest and most diverse group of fungi that includes the fungal element of lichen and many edible fungi (morels and truffles). Basidiomycota- Producers of spores on a stick or club-like structures and are known as club fungi. Some club fungi are edible but the majority are poisonous. 11.What fungi would you find in the group Deuteromycota? Deuteromycota has fungi that have lost the ability to reproduce sexually. 12.What is a lichen? Lichens are the symbiotic relationship between a fungus and an algae where the fungus is usually an ascomycete and the algae is usually a cyanobacteria. The fungal partner cant grow without the algae. 13.Define the following terms: Parasite- An organism that lives off of another living organism without killing or helping the host organism in any way. Saprobe- An organism that uses dead organic matter as a food source. Mutualistic Organism- Organisms that live in close association with another type of organism in a mutually beneficial relationship such as lichens. 14.What are the five common features of fungi? Fungi are heterotrophs and depend on other organisms as a carbon source. The structure of fungi is generally found as a unicellular fungi or as a mycelium. Most fungi have cell walls that are primarily composed of chitin. Fungi acquire their food through absorption which and transport their nutrients from substrate directly through their cell walls. Most fungi reproduce through sexual and asexual routes. Which route is used is determined by the environmental conditions. Describe the growth on each of your substrates, what were the similarities? The differences? I chose bread, a strawberry, a slice of tomato, and a square of cheese as my growing substrates. The similarities amongst them was in the general appearance of the mold. Each specimen had mold that was fuzz in appearance and seemed to branch away from a central location and spread throughout the food. A white colour was seen in each of the specimens as well. However, the bread mold had black in it as well as the white which makes me believe that it has different fungi that prefer bread to the other foods. The cheese, strawberry, and tomato all had white fuzzy mold on it. The cheeses mold was more dispersed throughout the food in a random pattern. The strawberry and the tomato mold looked very similar to one another and grew rather aggressively and covered the whole specimen.

Pros and Cons of Tidal Energy

Pros and Cons of Tidal Energy As the worlds energy crisis progresses, renewable energy sources like tidal power are being explored. Tides, the rise and fall of sea levels, are created by changes in the gravitational forces of the sun and moon as well as the earths rotation. Tidal Energy is generated by converting gravitational potential energy of high tides into hydroelectricity. Most ocean environments experience two high tides and two low tides everyday. There are three main ways to harness tidal energy, each with their own pros and cons. The first method of tidal energy generation is the tidal stream generator, the second is the tidal barrage and lastly there is dynamic tidal power. Tidal energy is not yet widely used but many people believe that it has great potential for future energy generation. This paper will examine the environmental effects of the different methods. The concept behind the tidal stream generator method is very similar to that of an underwater windmill; as the tide flows in and out of a bay it spins an underwater turbine which generates power. Tides move slowly, but because water is much denser than air, it can move much slower while providing the same power. The environmental benefits of this technology are numerous. Tides are always either flowing in or out allowing tidal stream generators to supply constant, consistent and emission free power. This is a benefit over other the other methods of tidal generation that can only generate power when the tide moves in a specific direction. Also, tidal stream generators are much, much cheaper than other methods of tidal generation allowing them to be easily implemented and tested. Although very few studies have been done, it would seem fish avoid the turbines used in tidal stream generators resulting in almost no aquatic fatalities. This means tidal stream generators have no known impacts on the surrounding ecosystem. There are not many environmental disadvantages to tidal stream generators. The turbines may cause some minor disruption to aquatic animals, but this is yet to be proven. The only environmental damaging aspect of this technology would be the work involved with maintaining and installing the underwater turbines. However, as a relatively unknown source of power, there is much of time for improvements. The tidal barrage is a large dam-like structure built at the mouth of a bay, stream, or estuary which experiences a large tidal range. It allows water to flow into the basin through the sluice gates during high-tide and during low tide releases the water through turbines. Turbines trap the energy from the movement of water in and out of the basin. This method of collecting energy has many environmental benefits. Firstly, because tides come twice a day, a tidal barrage will supply predictable, consistent and emission free power. This method is able to collect more energy than tidal stream generators because it essentially converts the potential gravitational energy of the tidal range in an entire region into electricity. Although barrages are expensive to build, they can be conveniently built under existing bridges. This reduces cost and some impact on the natural surroundings. There are, however, many environmental concerns with this kind of operation. Barrages have a great effect on the surrounding ecosystem. One of the main problems with the construction of a tidal barrage is it can halt the flow of saltwater into and out of estuaries. This can negatively affect the resident marine life. Also, migrating fish are only able to pass through the sluice gates as the basin fills with water. When the gates close, the fish will swim through the turbines. Currently even the safest designed turbines kill fifteen percent of the fish that pass through. This can have a signification effect on the fish population. Finally, tidal barrages block sediment movement. This can causes an accumulation of sediment around and in the barrage which could impair its functionality. Also, by blocking sediment movement it decreases the turbidity in the basin allowing for an increase in phytoplankton which effects the food chain of the ecosystem. Lastly there is dynamic tidal power, a promising new idea with great potential. A large barrier, perpendicular to the coast, is built out from the shore and an adjoining barrier is built along the far end of the first barrier making a â€Å"T† shape. This barrier blocks the acceleration of the tides parallel to the coast creating a difference in the water levels on each side of the barrier. A series of turbines installed in the dam can convert the potential energy of the higher water into electricity. The main difference between this source of tidal generation and the others is that to be economically viable it must be over 30 km in length. This is because the power output is proportional to the square of the dam length. The idea was proposed by Dutch coastal engineers Kees Hulsbergen and Rob Steijn. It has only been tested in computer simulations. Dynamic tidal power like the other types of tidal generation is emission free and resource independent. The environmental benefits of this method over the others boil down to the huge amount of energy that can potentially be generated in coastal regions. Even though it must be built on such a large scale, simulations project that it could potentially generate and 8GW of installed capacity which is thirty percent more power than the Bruce Nuclear Generating Station. If two are built around 200km apart an almost constant stream of power can be generated. Also beneficial is that the dams dont require a naturally high tidal range like both tidal barrages and stream generators. So countries like China, Korea, and the United Kingdom could potentially generate huge amounts of power. It is estimated China alone could generate over 100 GW of power. The environmental risks of dynamic tidal power is mostly in the construction of such a large structure. The building of something so massive wastes a lot of fossil fuels. Also, a barrier of that size could disrupt migration patterns of aquatic animals. Although as the barrier does not seal anything off sea creatures can always swim around. Each method has its own benefits and detriments. Tidal Stream power although not harming to the environment returns the least power, tidal barrages have the capability for large scale power generation they can hurt the ecosystem they are uses in, and dynamic tidal power which can be used to generate large amounts of power in many coastal locations is very very costly to implement and has never been tested. One method does not replace the other as they all are operate in different conditions. Development of this new technology is important and must be continued.

The Meaning of Life According to Victor E. Frankl Essay -- Philosophy

The Meaning of Life According to Victor E. Frankl The meaning of life, defined by Victor E. Frankl, is the will to find your meaning in life. It is not the meaning of life in general, but rather the specific meaning of a person’s life at a given moment. He believes that if you are approached with the question of â€Å"what is the meaning of my life† or in this case, â€Å"life is meaningless,† then you should reverse the question to that person asking the question. For example: What are you bringing to me? What are you as an individual contributing to this life? This forces the person in question to take a look at themselves and to ultimately be responsible. Frankl says that if you are a responsible member of society than the meaning of life transcends from yourself rather from your own psyche. He also says that if we for some reason cannot find meaning within ourselves it has to be from some outside source. This is referred to as service. And an example of this is love. Victor Frankl describes three ways in whi ch we can discover the meaning of life; Creating work-doing a deed, experiencing something-someone, and by the attitude we take toward unavoidable suffering.   Ã‚  Ã‚  Ã‚  Ã‚  There are several reasons why a person could be feeling that their life is meaningless or has no meaning. According to Victor Frankl these reasons could be existential frustration, existential vacuum, and the meaning of suffering. Frankl breaks down the meaning of existential frustration as so, it can be referred to as existence itself – the specifically mode of being, the meaning of existence, and striving to find concrete meaning in personal existence, which is the will to meaning. Existence itself, in simpler terms is just existing and the human mode itself. The meaning of existence is the question in which we often ask ourselves; Why are we here? When we strive to find concrete meaning in personal existence, we are looking for the personal meaning for existence. Basically what Frankl is saying is that when we are dealing wit the existential frustration we are looking for given meaning that isn’t there. (There is no meaning). On the other hand the re is the existential vacuum, which is when you cannot find meaning in your life. Frankl says that the existential vacuum manifests itself mainly in the state of boredom. It’s when you feel that you have no structure in your life, no one telli... ... both sides if an issue, because there are usually two sides to every story. But by looking at Frankl and examining what he has to say about the meaning of life, suffering, love, frustration, boredom, tension, etc, I have rally gained a lot of knowledge that almost is common sense. If you sit and take the time to read the material through thoroughly you can see exactly where he is coming from. He’ll take a difficult situation, such as suffering, and turn it completely around. As far as suffering goes I try to do the same thing, in a way. When Mark Felice died last October it crushed me. But I tried to look at the positive side and say well, his suffering is over and he was here to teach us how to live to be stronger and better people. Through our suffering, over the loss of his life, we ended his suffering. This is kind of what Frankl does, he turns things around and makes you view things from a different perspective. I like his way of thinking because it’s not alwa ys something that I would think of off the top of my head. Overall, I enjoyed the book although it was difficult at times to read, but I think I gained knowledge from it and see different ways to look at things now.

The Dork Continent Book Review

Upon hearing the title of the book, one might assume that it will focus on the decolonization of Africa. Africa is known as the â€Å"dark continent† because it remained a mystery to European explorers for an extensive amount of time. Instead, Mark Mazower's Dark Continent: Europe's Twentieth Century, focuses on Europe in the 20th century, as the title notes, and provides a historical and political analysis of the modern European state from the end of the First World War up until the time of publishing the book in 1988.Mazower, a young British author and historian, has taught at the University of Sussex and Princeton, and is a prize-winning author for his book Inside Hitler's Greece: The Experience of Occupation, 1941-1944. The principal thesis of Dark Continent is that the victorious reign of democracy in Europe was not predestined, but emerged significantly from the endless struggle between ethnic groups and nations, as well as three rival theologies- Nazism, Communism, and Democracy.Mazower's thesis suggests that democracy is not the essential preferred method of political organization, even when empires were falling and nations reorganizing after the devastation of World War I. Of the three ideologies, Mazower concludes that Communism was the closest to being satisfactory in both theory and practice. The book begins with the discussion of the rise and fall of democracy. The struggle between the three ideologies was at the core of European twentieth century history.Preceding the the first World War, Europe only had three republics; by the end of 1918 there were thirteen. Even so, democracy was unable to secure itself during inter-war years. Liberalism was â€Å"short-lived† and â€Å"democratic values disappeared as political polarization brought much of Europe to the verge of civil war. Mazower notes that in 1930, Weimar's Chancellor Hermann Muller warned that â€Å"a democracy without democrats is an internal and external danger†; but the founders of post-war constitutionalism had not given much thought to the matter.For many conservatives, the problem with democracy was simply due to â€Å"the power it gave the masses in the supposed incompatibility of democracy and authority. † The conservatives also feared that democracy â€Å"placed too much stress on rights and not enough on duties. † According to Mazower, the collapse of liberal democracy was the result of its focus on process rather than on results. In Mazower's view, Russian liberals â€Å"assume mistakenly that a deep rooted social crisis could be solved by offering ‘the people' constitutional liberties†(23).The consequence was that, at the end of the 20s was that the new nations that came about after the Versailles peace treaties came to be ruled by authoritarian regimes rather than democratic governments. The emergence of fascist and communist leaders with policies regarding state control of resources was unavoidable. For th e citizens that were tired of the war and failed attempts of democracy, men like Stalin, Hitler, Lenin, and Mussolini provided new hope for a stabilization in Europe.The pursuits of fascists like Hitler and Mussolini and the lesser in Eastern European nations may be reprehensible, Mazower admits, but it is at least comprehensible. What these dictators were doing was little different from what their predecessors in England, France, Russia, and even Belgium had done for the past half century: culminating European imperial expansion that began in the 1870s. By the late 1930s, it was evident that liberal democracy had lost its reign in Europe. Hitler's New Order appeared to be Europe's future. Mazower argues that even in December 1919 Lenin saw that â€Å"both terror and the Cheka [are] †¦ ndispensable† tools to maintain the permanent dictatorship of the bourgeois. Furthermore, â€Å"the scientific term ‘dictatorship', means nothing more or less than authority untramm eled by any laws, absolutely unrestricted by any rules whatever and based directly on force† (page 24). With that said, Mazower notes that â€Å"communism turned out to be the last, and perhaps highest stage of imperialism. Mazower does an exceptional job at giving his view of Hitler. I found this to be a successful way of supporting his thesis. What I found to be odd was the way he described the works of Hitler.I would assume that he would clearly show his disapproval of the matter, rather he seems to approach the issue lightly. Mazower makes an attempt to make us see that Hitler's belief that Germany's destiny depended on the geographic replacement of Slavs in Ukraine. Moreover, Mazower suggests that â€Å"the Second World War did not start because of diplomatic misunderstanding or confusion, nor even because of Hitler's deceit or duplicity. Rather it started because Hitler's opponents realized they were faced with â€Å"a clash of two worlds†-Berlin and London(82). What I did like about the book was the fact that Mazower explained the cause of communism's fall really well. I was a bit confused before of exactly what events sparked the fall, but I was surely aware and understood fully after reading this thoughtful book. As mentioned before, I found that Mazower seemed to praise Hitler's actions, suggesting that he was not part of the cause for World War II, but puts the blame on Hitler's opponents. It makes me question what side of the field Mazower is playing. Nevertheless, the book was a great read and provided an exuberant amount of historical background in Europe.

Effects of Human Urine on the Growth of Indian Tree Essay

I. INTRODUCTION Background of the Study Most of the Filipinos earn a living through agriculture. Throughout the years, a lot of fertilizers were improvised, mostly for the comfort of the Filipino farmers. Human urine, for example, is a well-balanced nitrogen-rich quick-reacting liquid fertilizer. It contains nitrogen, potassium and phosphorus and other nutrients depending on the diet. The health risks associated with use of human urine in plant production are generally low, that is why it’s an adequate plant fertilizer. On another note, Indian tree (Polyalthia longifolia) is a small-to-medium-sized evergreen tree growing up to 15 meters. Its leaves are long, narrow and oblanceolate, dark green, glossy and have wavy margins. It is native to India, Sri Lanka and recently introduced in the Philippines and widely cultivated in Metro Manila, planted in parks, garden and roadsides. Studies showed that the seeds of Indian Tree contain amino acids, the barks contain phytochemical, the root extract contains antimicrobial, various solvent extracts contain anti-inflammatory, and the seeds that are extracted contain antifungal. Objectives (major and minor) of the study This study, therefore, endeavors to investigate the effects of human urine on the growth of Polyalthia longifolia also commonly known as Indian Tree. It also endeavors to inform the farmers and the people in the field of agriculture practical guidance of the other uses of human urine. Significance of the Study This investigatory project entitled â€Å"The Effects Of Human Urine On The Growth Of Indian Tree† will be conducted in order to help and inform the people especially the farmers that â€Å"the economical value of the urine can be calculated by comparing with the price of mineral fertilizer on the local market or by calculating the value of the increased yield of the fertilizer.† (Anna Richert, et.al., 2010-2011). We would like it to be one of the aspects that contribute to the progression of our technology especially in the field of agriculture. This can add knowledge to students, teachers and administrators in making a research and improving their experiment especially those who are working on herbal medicine. This project aims to guide the future researchers in making their experiment. Scope and Limitation This study will focus on using the human urine as a fertilizer. Human urine, water and a combination of both will be poured on to the soil of the Indian plant. Using a commercially available Indian plant will make a comparative appraisal. This study, however, will not alter the active compounds of the soil and the seed itself. II. REVIEW OF RELATED LITERATURE Ricker, A. et.al. (2010) stated that urine is an aqueous solution made up of more than 95 per cent water, with the remaining constituents made up of urea, creatinine, dissolved ions (chloride, sodium, potassium, etc), inorganic and organic compounds or salts. Most of these remain in solution, but there can be a tendency for phosphorus-rich substances to sediment in containers that are stored for hygienization. This substance has a syrupish texture, and if urine is collected in a piping system, this â€Å"urine syrup† can sediment in pipes if the inclination is not sufficient. Differences in composition of excreta between different regions reflect differences in the uptake of consumed crops and thus in the plant nutrient supply needed for maintaining crop fertility in the region. Urine used directly or after storage is a high quality, low cost alternative to the application of N-rich mineral fertilizer in plant production. The nutrients in urine are in ionic form and their plan t-availability compares well with chemical fertilizer (Johansson et al., 2001; Kirchmann and Pettersson, 1995; Simons and Clemens 2004). Urine also contains large amounts of phosphorus, potassium, sulphur and micronutrients, but due to its high content of N, its P/N and K/N ratios are lower than in many mineral fertilizers used for crop production, and lower than what many crops need according to fertilizer recommendations. An advantage of urine in comparison with organic fertilizers is that the phosphorus exists in forms that are plant-available. This means that urine  is quite efficient as a phosphorus fertilizer, which has implications for the future with regard to the concept of Peak Phosphorus and the fact that phosphorus is a finite resource.(p1) The quantity of urine produced by an adult mainly depends on the amount of liquid a person drinks and perspires. Children produce approximately half as much urine as adults. Excessive sweating results in concentrated urine, while consumption of large amounts of liquid dilutes the urine. (p3) Urine use in areas where salinization is an issue should be monitored. Urine is a solution of salts, and salt stress can be a major constraint to plant production in arid areas. When urine is used in these areas, irrigation practices should be adapted, the urine should be watered down, and application of urine should regularly be interchanged with applications of water only. (p5) Grunbaum, M. (2010) cited that urine is chock full of nitrogen, potassium and phosphorus, which are the nutrients plants need to thrive—and the main ingredients in common mineral fertilizers. There is, of course, a steady supply of this man-made plant food: an adult on a typical Western diet urinates about 500 liters a year, enough to fill three standard bathtubs. And despite the gross-out potential, urine is practically sterile when it leaves the body, Heinonen-Tanski pointed out. Unlike feces, which can carry bacteria like salmonella and E. coli, urine poses no health risks—astronauts on the International Space Station even drink the stuff—after it’s purified. Effective fertilization is not the only benefit of recycling urine, Heinonen-Tanski suggested in a review paper in the January 2010 issue of Sustainability. The separating toilets that collect urine use less water than flush toilets, she wrote, and the simplified waste stream requires less energy in sewage treatment. According to Shaw, R. (2010) one reason that urine is an appropriate fertilizer is because the majority of the highly available nutrients in urine exist in a form that plants can use easily. Seventy-five to 90 % of the nitrogen in urine is in the form of urea, which becomes primarily ammonium ions in an aqueous solution of near neutral pH. This ammonium can be biochemically transferred to nitrate (NO3-) in the presence of oxygen (Jonsson et al, 2004: 9). Phosphorus is excreted as phosphate ions (Jonsson et al, 2004: 9). The majority of potassium, sulfur, and most minerals are also present as free ions (Jonsson et al, 2004: 9). These nutrients are directly available to plants in these forms without  processing. As with chemical fertilizers, urine is therefore a dilution of fast-acting plant nutrients that can work quickly to nourish plants (Kvarnstrom et al, 2006: 4). Comparable crop yields have been found when using equivalent amounts of chemical and urine fertilizers on many different crops. (p12) A fast-acting fertilizer like urine fertilizer has several benefits. Assuming the nutrient content can be estimated or measured with reasonable accuracy, the fertilizer can be applied in specific doses to meet known nutrient needs. Fast-acting fertilizers can also be used to rectify some diagnosed nutrient deficiencies, even on specific plants. Nutrients can also be applied at specific times in a plant’s lifespan to optimize nutrient uptake.(p13) As with any fertilizer, urine fertilizer can be applied in excess. Over-fertilization can introduce toxic levels of nutrients into the soil and kill plants. As is often the case with urine fertilizer, the large amount of nitrogen is the main concern. Fortunately, the toxic level of nitrogen is very high. A rule of thumb is that the toxic level of nitrogen is approximately four times the normal fertilization rate (Jonsson et al, 2004:4). This provides a large factor of safety for the use of urine fertilizer. If nitrogen is kept at an acceptable level, it is generally accepted that, except in rare cases, the other nutrients present in urine will stay at an acceptable level as well. (p14) Another concern is the volatility of nitrogen in urine. â€Å"The high pH of the urine in the collection vessel, normally 9-9.3, coupled with its high ammonium concentration, means that there is a risk of losing N in the form of ammonia with the ventilated air† (Jonsson et al, 2004: 11). This volatilization of ammonia occurs rapidly, with increased volatility as temperatures rise, and substantial amounts of valuable nitrogen can be lost to the atmos phere (Glibert et al, 2006: 448). Further, the contact of urine with the atmosphere creates unpleasant odors, as anyone who has smelled urine evaporating on a latrine floorcan attest. Odor does not affect the usefulness of urine fertilizer, but it can dissuade people from use. Urine fertilizer must therefore be collected and applied with as little atmospheric contact as possible, both to conserve nitrogen and to reduce unpleasant odor. (p15) Robinson, D. (2010) said that fresh human urine is sterile and so free from bacteria. In fact it is so sterile that it can be drunk when fresh; it’s only when it is older than 24 hours that the urea turns into ammonia, which is what causes  the ‘wee’ smell. At this stage it will be too strong for use on plants, but poured neat on to the compost heap it makes a fabulous compost accelerator/activator, with the extra benefit of adding more nutrients. Most garden fertilizers for vegetables contain more phosphorus than nitrogen. Phosphorus is valuable for root growth, nitrogen for vegetative growth like leaves and potassium helps the ripening and fruiting process. The great value of urine lies in its universal availability and zero cost. Consequently it has immense potential value and has been used for many generations as a plant food in some countries, notably in the Far East. Because of its high nitrogen content it is particularly useful for feeding leafy vegetables, which enjoy a high nitrogen diet. According to Abington, J.B. (1992) cited that urine as a source of fertilizer has been investigated at Lumle. The effect of 1:1 water: urine mixture top dressing on the marketable yield of leafy vegetable crops was found to be a significant increase of 81.7% over an untreated control, and 23.7% over a top dressing of urea. (p51) III. MATERIALS AND METHODS A. Preparation and Collection of Tree Two Indian Tree seeds will be bought. They will be planted using Loam soil. The specimen will be stored in the garden area at MPC. Controlled variable 1 will be watered using urine (see step 2) and controlled variable 2 will be watered using tap water. B. Preparation and Collection of Urine Human urine will be collected from one of the group members. The contributor’s diet will be strictly observed. The urine sample will be measured upon collection. The color will also be observed. Materials -seeds will be bought or we’ll try to find it for free†¦ -2 pots? -human urine by Mark Figueras -mark’s diet -water Methods -plant the seeds, 2 pots (1 controlled *urine, 1 uncontrolled *water) -water 3 times a day having both urine and water equal in amount IV. BIBLIOGRAPHY Richert, Anna., Gensch, Robert., Jà ¶nsson, Hà ¥kan.,Stenstrà ¶m, Thor-Axel., & Dagerskog, Linus. (2010-1). Practical Guidance on the Use of Urine in Crop Production. [Pdf]. Ttockhollm Environment Institute, Sweden Retrieved December 12, 2012 from EcoSanRes Series. http://www.ecosanres.org/pdf_files/ESR2010-1-Pract icalGuidanceOnTheUseOfUrineInCropProduction.pdf Grunbaum, Mara. (July 23, 2010). Gee Whiz: Human Urine Is Shown to Be an Effective Agricultural Fertilizer. [Webpage]. Retrieved December 12, 2012 from http://www.scientificamerican.com/article.cfm?id=h uman-urine-is-an-effective-fertilizer Shaw, Ryan. (2010). THE USE OF HUMAN URINE AS CROP FERTILIZER IN MALI, WEST AFRICA. [Pdf]. Ryan Shaw, MICHIGAN TECHNOLOGICAL UNIVERSITY Retrieved December 12, 2012 from http://cee.eng.usf.edu/peacecorps/5%20-%20Resource s/Theses/Sanitation/2010Shaw.pdf Abington, J.B. (1992). Sustainable livestock production in the mountain agro-ecosystem of Nepal. Reprint, Rome.

The True Story About Term Paper Written That the Experts Dont Want You to Know

The True Story About Term Paper Written That the Experts Don't Want You to Know Understanding Term Paper Written The expression paper writing is extremely essential for the students to be learned. You will receive a decently structured paper that's not only likely to earn you a great grade but that may also function as a guide for future assignments. Also, there's another college editing support, where students have a special chance to check papers written by their owns. So far as the students are involved, writing a research paper is among the toughest and frustrating job in their opinion. Writing a paper will boost your competence in some specifically substantial location. Therefore, should you need an essay or APA term paper, for example, you can call or text us. Although essays and research papers can be an issue, term papers are more complex than nearly all of the academic assignments. 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Typing Spanish Accents and Symbols in Ubuntu Linux

Typing Spanish characters on a computer keyboard laid out for English speakers can be cumbersome. Thankfully, Ubuntu Linux offers a way to make it easy with little interference to your English typing. The key to easily typing non-English characters—especially those from a language like Spanish—is switching to a different keyboard layout than the default. You can use the Character Map instead, but it is more cumbersome and not recommended if you type in Spanish frequently. How to Switch to a Spanish-Capable Keyboard The procedure for typing Spanish accents, letters, and symbols as explained here is based on Ubuntu 16.04 LTS (Xenial Xerus). It should work in other distributions using the Gnome desktop. Otherwise, details will vary with the distribution. To change or add the keyboard layout in Ubuntu, select Preferences from the System Tools menu, and then select Keyboard. Click on Text Entry (other versions may say Layouts) to add or change the keyboard layout. For U.S. residents using English as a first language, the best choice (and the one explained here) is the USA International (with dead keys) layout. The USA International (with dead keys) layout gives you two ways of typing Spanish letters (and the letters of some other European languages) with diacritical marks: the dead-key method and the RightAlt method. Using Dead Keys The keyboard layout sets up two dead keys. These are keys that seem to do nothing when you press them, but they actually affect the following letter you type. The two dead keys are the apostrophe/quotation key (usually to the right of the colon key) and the tilde/opening-single-quote key (usually to the left of the one key). Pressing the apostrophe key will place an acute accent (like on the à ©) on the following letter. So to type an à © with the dead-key method, press the apostrophe key and then the e. To make a capital accented É, press and release the apostrophe, and then press the shift key and e at the same time. This works for all of the Spanish vowels (as well as some other letters used in other languages). To type the à ±, the tilde key is used as the dead key. Press the shift and tilde keys at the same time (as if you were typing a stand-alone tilde), release them, then press the n key. To type the à ¼, press the shift and apostrophe/quotation key at the same time (as if you were typing a double quotation mark), release them, and then press the u key. One problem with the use of dead keys is that they dont work well for their original function. To type an apostrophe, for example, you have press the apostrophe key and follow that with the space bar. Using the RightAlt Method The USA International (with dead keys) layout gives you a second method of typing the accented letters, as well as the only method for Spanish punctuation. This method uses the RightAlt key (usually to the right of the space bar) pressed at the same time as another key. For example, to type the à ©, press the RightAlt key and the e at the same time. If you want to capitalize it, you need to press three keys simultaneously: the RightAlt, e, and shift keys. Similarly, the RightAlt key can be used in conjunction with the question mark key to make the inverted question mark, and with the one key to make the inverted exclamation point. Here is a summary of the Spanish characters and symbols you can make with the RightAlt key: à ¡ — RightAlt aà  — RightAlt Shift aà © — RightAlt eÉ — RightAlt e Shiftà ­ — RightAlt ià  — RightAlt i Shiftà ± — RightAlt nÑ — RightAlt n Shiftà ³ — RightAlt oÓ — RightAlt o Shiftà º — RightAlt uÚ — RightAlt u Shiftà ¼ — RightAlt yÃÅ" — RightAlt y Shift ¿ — RightAlt ? ¡ — RightAlt ! « — RightAlt [ » — RightAlt ] If you choose to take this approach, note that this is called the RightAlt method. These techniques do not work with the Alt key on the left side of the keyboard. Drawbacks Unfortunately, the USA International (with dead keys) layout doesnt appear to offer a way to type the quotation dash (also called a long dash or em dash). For those who are more familiar with Linux, you can modify the xmodmap file or use various utilities to remap a key on the keyboard to make that symbol readily available. How to Switch Between Standard and International Keyboards The frequency with which you use Spanish characters when typing will determine what keyboard approach to use. For example, if you spend most of your time writing in English, the dead apostrophe key of the dead-key method can become annoying. One solution is to install two keyboard layouts using the Keyboard configuration tool. To easily switch between layouts, install the Keyboard Indicator in one of your panels. Right-click on a panel, select Add to Panel, and then select Keyboard Indicator. Once its installed, you can click on it anytime to switch layouts. Using the Character Map The Character Map provides a graphical display of all the characters available and can be used to select characters one by one for insertion in your document. In Ubuntu Linux, the Character Map is available by selecting the Applications menu, then the Accessories menu. The Spanish letters and punctuation can be found in the Latin-1 Supplement listing. To insert a character in your document, double-click on it, then click Copy. Then you can paste it in your document in the normal way, depending on your application.

Pictorialism and Modernism Free Essay Example, 2250 words

However, (Becker, 2005) argues that the difference between pictorialism and modernism has a thin line that is in most cases ignored without a good focus attention. In today’s art, pictorialism and modernism have a thin boundary and a few characteristic that differentiates them, and which are only clear to the technical knowledge in artists and not to armatures. In most cases, any art photography is considered as pictorial and this led the modern photographers to emphatically differentiate themselves from pictorialism. Comparison between pictorialism and modernism artists Adolf Fassbender vs. Ansel adams Fassbender was a renowned pictorialism photographer whose work was done with a high degree of clarity to an extent that there was little difference between the work of Adolf and the work of the modernism artists such as Adams. The most renowned photograph that was done by the two artists was a photograph that depicted water and hills on the background with a mist cover in the vicinity and a tree branch on the foreground (Becker). Fassbedner represented this photography in pictorialism while Adams represented it in modernism. In this photography, there are distinct similarities between the two artists to a level that it might be not possible to differentiate the two artistic works especially to an amateur in art work. We will write a custom essay sample on Pictorialism and Modernism or any topic specifically for you Only $17.96 $11.86/pageorder now The similarities portrayed a high degree of likeness between the methods of artistic work to an extent that one representation might be considered to be the other and vice versa. In this particular photo, the only difference that might be attributed is the focus. While Adams’ focuses sharp and portrays a high degree of natural reality, Fassbender’s focus is softer and portrays some degree of modification on the photo to present the desired impression. This little similarity as Backer (2005) further elaborates makes Adams to be a strict critic of pictorialism and dismisses the pictorialism representation particularly by Fassbender as â€Å"fuzzy-wuzzies†. The fuzziness might be argues to result for the modifications that are carried out on the actual photography to present the required impression and the textural paper that brings out the photography as soft and lacking a deep focus that characterizes modernism. The slight difference led modernism artists to wage a lot of criticism to pictorialism arguing that their works were grounded on the real, and like silence, it was predicated on portraying the nature’s truth his led Adams to coin the word transcendental perhaps to describe the mode of photography in modernism and to portray a significant difference between his work and that of Fassbender.