Solar power Tanel terras The basics of solar power Solar power is the conversion of sunlight into electricity Photovoltaics Concentrated solar power Concentrated solar power · Electrical power is produced when the concentrated light is converted to heat, which Click to edit Master text styles drives a heat engine connected to an Second level electrical power generator or powers a Third level thermochemical reaction Fourth level Fifth level Photovoltaics Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into di...
Solar power What is solar power? Solar power is the energy, which is derived from solar radiation energy. Mainy used to heat and power production, but as well as natural lighting. Solar power released as a result of fusion reactions taking place in the sun. What is solar power? Päikeseenergia on energia, mis on saadud päikesekiirguse energiast. Põhiliselt kasutatakse seda soojuse ja elektri tootmiseks aga ka loomulikus valgustuses. Päikeseenergia vabaneb päikesel toimuvate termotuumareaktsioonide tulemusel. Using heat production production of electricity from solar energy Kasutamine: Soojuse tootmiseks (sh. tarbevee ja joogivee kütmiseks) kasutatakse päikesekütteseadmeid. Elektri tootmine päikeseenergiast võib toimuda fotoelement- ehk fotogalvaanilises elektrijaamas päikesepatareidega või päikese-soojuselektrijaamades läbi soojuse. ...
SOLAR PANEL TTÜ 2016 WHAT IS SOLAR PANEL? • Panel which work by solar energy HISTORY • 1954 • Giacomo Luigi Ciamician • Company «Bell Labaratories» HOW DOES SOLAR PANEL WORK? PRODUCTS POWERED BY SUNLIGHT SATELLITE POWERED BY SOLAR ENERGY ADVANTAGES&DISADVANTAGES • Ecofriendly • Sustainability • Extensive range of applications • Cost • The need for cleaning • Weather
Solar power Rasmus Definition Solar power is the conversion of sunlight into electricity The most abundant energy source on Earth Explosive growth in recent years History Charles Fritts first solar cell, 1% efficiency (1883) Bell Labs first modern silicon cell, 6% eff. (1954) First solar powered calculators (1978) 40percentefficient solar cell in 2006 Solar panels were installed on the White house (2013) Rapid growth Solar industry is the fastestgrowing in the US Solar industry is expected to double every year until 2020 Employs over 100 000 people in US alone Solar cooker Produces heat by concentrating sun rays into one spot Takes long to cook, difficult to burn Works roughly like an oven Bread and cakes usually brown on their tops Solar power good investment? The cost of solar power is constantly falling Will be cheaper than nuclear power in 201415, than coal in 2016 17 Strong demand Enterpr...
SOLAR ENERGY Karol Pakkas What is solar power? Solar power is energy that comes from the sun. The sunlight gives off energy as heat. Solar power is a renewable source of energy. How does solar power work? Solar panels are used to collect sunlight. Solar panels are made up of photovoltaic cells that convert the sunlight into energy. Why do we need it? How does it lead to better health? Solar power is source of clean energy. It does not produce pollution or greenhouse gases or carbon compounds. Solar power would be a lot safer for the environment and a lot better for the health of people. What would happen if we don't use solar power? If we don't start using solar power, we would use oil and coal. They produce pollution and will cause millions of people to suffer from respiratory related problems. The oil and coal will run out and peopl...
SOLAR ENERGY Karol Pakkas What is solar power? Solar power is energy that comes from the sun. The sunlight gives off energy as heat. Solar power is a renewable source of energy. How does solar power work? Solar panels are used to collect sunlight. Solar panels are made up of photovoltaic cells that convert the sunlight into energy. Why do we need it? How does it lead to better health? Solar power is source of clean energy. It does not produce pollution or greenhouse gases or carbon compounds. Solar power would be a lot safer for the environment and a lot better for the health of people. What would happen if we don't use solar power? If we don't start using solar power, we would use oil and coal. They produce pollution and will cause millions of people to suffer from respiratory related problems. The oil and coal will run out and peopl...
Solar Energy Presentation Introduction Solar energy Solar power Ø applications Ø energy storage method and solar power plants Solar energy Radiant light and heat from the sun Solar energy technologies include: Ø solar heating, Ø solar photovoltaics, Ø solar thermal electricity , Ø solar architecture Solar power Conversion of sunlight into electricity Using: Ø Photovoltaics (PV) Ø concentrated solar power (CSP). Click to edit Master text styles Second level Third level Fourth level Fifth level CSP systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. PV convert light into electric current using the photoelectric effect. Applications CSP - normally focuses the sun's energy to boil water ...
The Solar System 1)Name the inner planets of our solar system? The inner planets are Mercury Venus Earth Mars 2)Name outer planets of our solar system? The outer planets are Jupiter Saturn Uranus Neptune Pluto 3)Where is the asteroid belt situaded? The asteroid belt is situaded between inner planets and outer planets. 4) 5)Describe one of the inner planets of our solar system? Mars is seen as a reddish star in the night sky.The surface is reddish-brown,desertlike.The Viking probes that landed on Mars found rocky surface with vast plains and volcanoes and no evident traces of life.Mars has changes in season.Its seasons are twice as long as Earth`s.Large caps of frozen fluid melt and refreeze over poles as the seasons pass
ÄRIPLAAN ETTEVÕTTE ÜLDANDMED Ettevõtte nimi: SOLAR LINE AS äriregistri registreerimise number 11487034 KMKR EE 101259093 registreerimise aeg ja koht: Tallinn, 26.01.2014 Aadress: Kärberi 17-40, Tallinn Telefonid: 5175319 e-mail: [email protected] Juhatuse liikmed: Artjom Petrov Aleksandr Petrov Tatjana Petrova Valentin Petrov Aktsiaseltsi võib esindada ainuisikuliselt juhatuse liige Artjom Petrov. Põhikapital: 50000 EURO Kontaktisik, tema telefon: Artjom Petrov, 53022472 ETTEVÕTTE LÜHIÜLEVAADE Kruiiside saatmine Tallinnast Taani või Suur Britaaniasse ja tagasi. I. KOKKUVÕTE Ettevõte soovib Eesti turule tuua oma teenuseid, millistes on kruiisi saatmine Taani või Suur Britaaniasse ja tagasipöördumine. Kruiisi ajal klientidel on võimalus kasutada laeva baari, laeva restoraani, istuda oma kajutides. Firma põhitegevusaladeks on kruiisisturism, majutus ja toitlustus ning baari, restorani ...
Päikeseenergia: Päikeseenergia on energia, mis on saadud päikesekiirguse energiast Päikeseenergia vabaneb Päikesel toimuvatel termotuumareaktsioonide tulemusel Päikese- ehk helioenergia kuulub alternatiivse ja taastuva energiaallika alla. Kasutatakse nii soojus- kui elektrienergia tootmiseks, samuti ka loomulikus valgustuses. Päikeseenergia kasutamise eelised: On taastuv ja lõputu enerigaallikas Päikesepaneeli "kütus" ehk päikesevalgus on tasuta kättesaadva. Päikeseelektri tootmine on keskkonnasõbralik, tootmisega ei kaasne mingisuguseid saasteid Puuduvad transpordikulud, kuna toodetakse kohapeal Otstarbekas kasutada seal, kus pole vaja tugevat voolu ja elektrihulka Päikeseenergia kasutamise puudused: Ei ole kuigi varustamiskindel, kuna sõltub päikesevalgusest, mis jõuab maani igas ajaühikus. See muudab päikesepatarei kasutuks öösel ja pilvistel päevadel. Efektiivseks kasutamiseks ööpäevaringselt tuleks ehitada välja elektri trantsporti...
“Green Illusions” The Dirty Secrets of Clean Energy and the Future of Environmentalism Ozzie Zehner Author Ozzie Zehner Visiting scholar at University of California, Berkeley Kettering University ( BS – Engineering ) The University of Amsterdam ( MS/Drs – Science and Technology Studies ) http://boa.czp-vecer.si/vecer2000/20131211/5023698_ Primarily researches social, cultural, political and economic .jpg conditions influencing energy policy priorities and project outcomes Introduction This book talks about the negative side effects of the alternative energy like wind turbines, solar cells and bio fuels. We don't have an energy crisis. We have a consumption crisis. And this book, offers refreshingly straight talk about what's wrong with the way we think and talk about the problem. Though we generally bel...
Improved Windows for Cold Climates In this paper the possibilities of improving the energy performance of windows in cold climates are exam-ined. The background for using windows with improved energy performance is the need to reduce the en-ergy consumption in buildings. Since the heat loss through windows often represents half the total heat loss from houses, much energy can be saved by developing and using better windows with respect to energy performance. The main purpose of having windows in houses is that they provide daylight and view, but windows also provide solar gain that can be utilized as a contribution to the space heating in the building. Therefore the windows also have a positive influence on the energy balance of buildings. To evaluate the possibilities for developing better windows with respect to energy performance when used in Nordic and arctic climates, seven different window types have been examin...
Renewable energy Meriliin Lend Estonian University of Life Sciences Tartu 2013 Topics Renewable energy Solar energy Wind energy Hydroelectric power Geothermal energy Biomass energy Renewable energy Renewable energy comes from sources that naturally renew, or will not run out in our lifetimes. Includes sunlight, wind, water, geothermal heat and various forms of biomass. Renewable energy cannot be exhausted and is constantly renewed. Does not harm the environment. Saves money. Solar energy Solar energy is the technology used to harness the sun's energy and make it useable. Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year. Solar energy use has surged at about 20 percent a year over the past 15 years, thanks to rapidly falling prices and gains in efficiency. Solar energy is inexhaustible. Noise free. Does not harm the environmen...
New energy sources Rauno Hermann Scheer Energy law example for 47 countries 6.3% to over 20% Numerous awards including The Right Livelihood Award Renewable energy in world Investments 63 billion USD > 120 billion USD 20062009 Wind energy: 74 000 MW to 135 000 MW Solar energy: 5100 MW to 19 000 MW WHAT ARE THE ALTERNATIVES TO TODAYS SOLAR, WIND AND BIOMASS ENERGY SOURCES? Osmotic power How it works? Pressure created by osmosis powers turbines Where could be used Where fresh and salt water meet (creeks, fjords) Desalination plants Now Worlds first test factory in Norway Tofte (2009) Disadvantages Km2s of membranes needed Norway, Tofte Click to edit Master text styles Second level Third level Fourth level ...
ELEKTROENERGEETIKA INSTITUUT Referaat Taastvad Energiaallikad Esitamise tähtaeg 14.04.2009 Õppejõud: Hannes Agabus Tudeng: Sergei Belosapko Nikita Naumov Tallinn 2009 Contents: 1. Renewable energy 1.1. Costs................................................................................................................... 2 1.2. Potential future utilization..............................................................................4 1.3. Why Don't We Use More Renewable Energy? ...........................................5 2. Energy Types 2.1. Wind Energy.......................................................................................................6 2.1.1. Annual Generation........................................................................................7 2.1.2. ...
Nuclear Power: A Burden or a Blessing? Today, when the pollution of Earth is an important matter, people are trying to find economic solutions to produce power. This is where the necessity of nuclear power plants comes in question. Nuclear power plants are a cheap way to generate electricity but it also brings a lot of pollution that is much more radioactive and toxic than, for example, coal waste. But if we are looking at the facts, burning coal pollutes the Earth much more than nuclear power plants because more waste is generated. CO2, which is released from burning coal, is the main cause of global warming. Nuclear waste is collected and hidden in rocks or under ground, where it won't face the environment. However we shouldn't depend on nuclear energy as Uranium reserves are ending, especially when the world population is increasing and so is the demand for energy. There is Uranium in seawater, but gettin...
Tallinna Tööstushariduskeskus Saturn Referaat Tallinn 2014 Sissejuhatus Saturn is one of the most interesting planets in the solar system. It is the sixth planet in the solar system, and is most famous for its stunning array of rings. It is a very easy planet to pick out in the sky because it is one of the brightest lights in the shy. It also has a very faint greenish color that makes it stand out from the rest of the objects in the sky ("Astronomy for Kids"). Saturn is the second largest planet in the solar system, Jupiter being the only planet that is bigger. It also has at least eighteen moons, more than any other planet in the solar system. There have been three voyages to this extraordinary planet, and one is still in process today. The Pioneer II traveled to Saturn in September of 1979, the Voyager missions took place in the 1980's...
2.1 Thermal treatment of physical properties of polyethylene Märksõnad: polyethylene, thermal treatment, physical properties Otsiprofiilid: polyethylene AND thermal treatment polyethylene AND physical properties polyethylene AND properties polyethylene AND treatment polyethylene AND thermal AND treatment polyethylene AND physical AND properties 2.1.1 a) polyethylene AND thermal AND treatment: 1441 artiklit polyethylene AND physical AND properties: 7410 artiklit b) polyethylene AND thermal AND treatment: 143 artiklit kasutades Ei controlled terms Polyethylene AND physical AND properties: 866 artiklit kasutades Ei controlled terms 2.1.2 Malle Krunksile leidsin 60 artiklit 2.2 2.2.1 http://search.proquest.com/docview/230171400/13CC363D7D13127162A/1? accountid=28786 a) Jim Brown heads a management consulting firm, Tech-Clarity Inc. in Media, Pa. he also serves as the product lifecycle management specialist for the PLM Evalua...
Environmental problems Many environment problems are caused by human actions. 1. Air pollution. Use public transportation instead of your own when going to work. Air pollution is also drastically reduced by conserving energy. It is the little things, like switching off fans and lights when you are not at home. Electricity causes the burning of large amounts of fossil fuels, which in turn pollute the air. Solar power is a fantastic solution. Now that solar radiation is at a climactic peak, we can reap power from the sun using solar panel systems. These range from home systems to larger scale systems powering entire communities and cities. 2. Deforestation. While individuals can rarely have a personal impact on the deforestation rate, there are other things you can do. Discourage deforestation and thus environmental degradation by reusing plastic a...
Karina Repetun 11.klass Päikesepatarei on elektrotehniline seade, mis muundab Päikese valgusenergiat elektrienergiaks. Tavaliselt kasutatakse päikesepatareis fotoelemente, milles elektromotoorjõud tekib juhi ja pooljuhi või kahe pooljuhi vahelisel siirdel. Enamasti kasutatakse selleks pooljuhtide fotoelektrilisi omadusi. Kui valguseosake footon "põrkab" vastu pn-siiret, siis vahetavadelektron ja auk vastavalt N- ja P- pooljuhis kohad. Kui ühendada pooljuhid voolutarvitiga, siis suunduvad elektron ja auk oma pooljuhtide poole tagasi, tekitades elektrivoolu. Pooljuhtide võimsus 1 m² suuruse pinna kohta on kuni 300 W ja nende kasutegur on 10~20%]. Üks selline element tekitab pingeligikaudu 0,5 V. Kõrgema pinge saamiseks ühendatakse elemendid jadamisi, aga voolutugevuse suurendamiseks rööbiti. Tavaliselt valmistatakse päikeseelemendid mõõtmetega 10×10 cm, mis suudab tag...
Space technology The Hubble About the Hubble Built in the 70's Launched to the orbit in 1990 600km from the Earth About 13,2m long 11 110 kg Edwin Paul Hubble 36 000 000 US dollars 15-20 years (Successor James Webb Space Telescope) Solar power panels 97 minutes Click to edit Master text styles Second level Third level Fourth level Fifth level The importance The rate at which the universe is expanding. Black holes Supernovae Solar systems Galaxies Pillars of Creation Click to edit Master text styles Second level Third level Fourth level Fifth level http://www.youtube.com/watch?v=khySM1YBQvA&feature=related
Environment and renewable energy 1. How can we help bring about a change in behavior? * Renewable energy is the sun and the water that people use, but not yet so widely. Required on all homes, various stations, hypermarkets solar panels to use the potential energy, the stock of which is not completed within 5 billion years. * Renewable sources such as wind and solar are intrinsically unsuited to meeting the demand for continuous, reliable supply on a large scale – which comprises most demand in developed countries. The criteria for any acceptable energy supply will continue to be cost, safety, and security of supply, as well as environmental considerations. 2. How can we encourage sustainable development? * To encourage you in the following way. To allocate money for the construction of such stations to States that are unable to pay for expensive power plants. Permanent sponsorshi...
SISUKORD SISUKORD..........................................................................................................................................1 Sissejuhatus..........................................................................................................................................2 1. Päikeseenergia kasutamine...............................................................................................................3 1.1. Elektrienergia.............................................................................................................................4 1.2. Soojusenergia.............................................................................................................................4 1.3. Päikese energeetilise ressursi hindamise algeeldused...............................................................5 2. Päikeseenergia mõju keskkonnale.............................................
PÄIKESESÜSTEEM Planeetide järjekord: NUSJMEVM Päike Suuruse järgi: Jupiter, Saturn, Uraan, Neptuun, Earth, Veenus, Marss, Merkuur Atmosfäär: Merkuur (hõre), Veenus (tihe), Earth, Marss (maasarnane), Jupiter, Saturn, Uraan(metaan-sinine), Neptuun (vesinik+heelium+metaan) Kõrgeima temperatuuriga planeet: Veenus Madalaima temperatuuriga planeet: Uraan Meteoor – ere välgatus öises taevas e langev täht. Universumist Maa atmosfääri sattunud lendkivi. Meteoor – põleb lõpuni. Meteoriit – ei põle lõpuni, langeb maale. Asteroid – meteoorkeha, mille läbimõõt on suurem kui 1 km. Komeet ehk sabatäht. Väikekehad päikesesüsteemi äärealadelt. Päikesesüsteem koosneb päikesest ja tema ümber tiirlevatest osakestest. Päikesesüsteem on 5.6 miljardi aasta vanune Maa tüüpi planeedid: Merkuur, Veenus, Earth, Marss On tahked ja kivine. (Koosneb kivimitest ja metallist.) Hiidplaneedid: Gaasi hiiglased: Jupiter, Saturn Jäähi...
Natural resources-our treasure Natural resources are land or raw materials like minerals, fluids, gases, organic matters and also woods, groundwater, animals and so on, in other words it's everything that human hasn't created. These resources are also used in industry. We get natural resources from the environment. Many of them are essential for our survival while others are used for satisfying our wants. Renewable resources: Some natural resources can be reproduced within a few years or decades. These are called renewable resources. Solar radiation, wind and hydroelectricity, are perpetual resources that are in no danger of a lack of long-term availability. Some natural renewable resources such as geothermal power, fresh water, timber, and biomass must be carefully managed to avoid exceeding the worlds capability to displace them. Solar energy is the energy derived directly from the Sun...
2 CONTENT CONTENT CONTENT CONTENT CONTENT CONTENT 3 CONTENT GOALKEEPER TECHNOLOGIES ONORE 77 MATCHWEAR PRECIO 81 CAMPEON 15 9 CONDIVO 14 14 REFEREE 87 TIRO 15 17 TOQUE 13 21 STRIPED 15 27 TRAININGWEAR SQUADRA 13 33 TABELA 14 39 TIRO 15 93 ESTRO 15 45 CONDIVO 14 121 VOLZO 15 51 SERENO 14 147 ENTRADA 14 55 CORE FIFTEEN 161 TECHFIT 175 SHORTS 61 SOCKS 73 ACCESSORIES 183 HARDWARE 191 4 TECHNOLOGIES Light, breathable fabrics worn close to the skin, conduct heat climacool® is a combination of performance fabrics. Open mesh and and sweat away from the body to keep you cool and dry in warm ventilat...
SISUKORD ENERGY STORY................................................................................................................4 USES OF ENERGY............................................................................................................. 4 2.1 Uses of energy in homes...............................................................................................5 2.2 Types of energy used in homes.................................................................................... 6 2.3 Energy use in different types of homes........................................................................ 6 2.4 Commercial Energy Use...............................................................................................9 2.5 Industrial and Manufacturing Energy Use..................................................................11 2.6 Transportation Energy Use.................................................
Ülesanne 2 Infootsing raamatukogu andmebaasidest 2.1. Otsing andmebaasist Compendex Engineering Village platvormil. 2.1.1 b) ((Thermal treatment of physical properties of polyethylene.) WN All fields) c) 189 artiklit e) (((((thermal treatment) WN CV) ) AND ((physical properties) WN CV) ) AND ((polyethylene) WN CV) ) f) 4 artiklit 2.2. Otsing andmebaasist ProQuest Science Journals. 2.1.2 a) 68 articles found in Compendex for 1969-2014: ((({KRUNKS MALLE}) WN AU) OR (({KRUNKS M.}) WN AU)) 2.2.1 a) Jim Brown heads a management consulting firm, Tech-Clarity Inc. in Media, Pa. b) Otsistrateegia : Kõige pealt kirjutasin otsingulahtrisse Tools for all jobs seejärel panin Advanced Search ja sealt kirjutasin teise otsingukasti Jim Brown ja panin in Autors- AU , kahe otsingufraasi vahel oli AND 2.2.2 a) o laiemad märksõnad: environment o kitsamad märksõnad: aquatic ec...
TALLINNA TÖÖSTISHARIDUSKESKUS ROBOTNIIDUK Referaat Juhendaja: Koostaja: Kursus TALLINN 2013 SISUKORD SISSEJUHATUS Erinevaid robotniidukeid on palju, kuid mulle jäi silma üks, mis kasutab peale aku, toiteallikana ka päikesepaneele, mis muudab selle niiduki väga hübriidseks ja efektiivseks. Nimelt kirjutan peamiselt Husqvarna Automower Solar Hybrid-ist. Arvan, et päikesepaneelid niidukil on väga efektiivsed, sest muru niidetakse üldiselt suvel ja päikesepaistelise ilmaga. (Joonis 1) LÜHIKIRJELDUS Robotniiduki omadused: Madal müratase Automaatne laadimine Kui niiduk vajab täiendavat laadimist leiab ta ise tee laadimisjaama PIN koodi lukk ja vargusvastane alarm Pole heitgaase Seadistuspaneel Võimalik sisestada seadeid vastavalt aial...
Päiksesesüstee m Päikesesüseemi mõiste • Päikesekeskne taevakehade süsteem, mille ulatus piirneb Päikese gravitatsiooniväljaga • Väike osa Galaktikast • Miljardid Galaktikad moodustavad hiigelsuure universumi Päikesesüsteem • https://www.google.ee/search?q=solar+system Päikese teke ja areng • Tekkis ligikaudu 5 miljardit aastat tagasi • Esmalt tekkis oma raskuse tõttu kokku tõmbuma hakanud gaasipilv • Pilve koostis: 69% vesinikku, 30% heeliumi ning 1% muid raskemaid aineid • Pilve keskele kogunenud gaasist moodustus päike Planeetide teke ja areng • Ülejäänud gaasist moodustusid planeedid • Raskemad aatomid koondusid kokku ning tekkisid planeetide tuumad • Tuumi jäi ümbritsema vesinikust ja heeliumist atmosfäär • Päikesekiirgus hajutas ülejäänud gaasi ja lähimate planeetide gaasilised atmosfäärid Päikesesüsteemi tekkimine Päikesesüsteemi ehitus ja dünaamika • Moodustavad Päike, 8 planeeti, planeetide...
The space age in the next 50 years The space age began about 50 years ago with the launch of sputnik, the first man-made object in space. Since then, spaceflight technologies have grown up. Within the 50 years we have achieved much in the spacelife, such as landing on the moon etc. Things what were impossible 50 years ago are nowdays reality. But what will happen in the next 50 years? In the first place people will be able to take trips into the space. And that`s predicted to be happening in short time through the Virgin Galactic, which plans to provide sub-orbital spaceflights to the paying public. Currently about several hundred people have already booked a seat on that plane, which costs $200 000 per person. What is more that by 50 years time I think that we will have found life on other planets. As there are proofs that there once were a water on Mars so it`s likely thath life has existed there. In the...
Green Energy Program paid for and brought to by -Anja Bananja -Franz the Manz - And Just Chadrick Overview- What is Green Energy? Different Types? What is sustainability? German Green Energy Cost and Efficiency Recycling What is Green Energy? -It is energy resources that are renewable -Can be naturally replenished -Clean, Safe and not harmful to the environment (aka mother earth) Types of Green Energy Green Energy going cute Solar Power · Is produced by using photovoltaic cells, which capture sunlight and turns that into energy. Problems ? -The sun has got to shine -The cost of solar panels and the systems range between $20k-40k -The light from the sun produces a very small amount of energy Wind Power -These giant pinwheels spin from strong winds which spins ...
Ülesanne 2 Infootsing raamatukogu andmebaasidest 2.1. Otsing andmebaasist Compendex Engineering Village platvormil 2.1.1.Leia kompleksotsinguga Quick Search artikleid teemal Thermal treatment of physical properties of polyethylene a) otsivälju "All Fields" - leidsin 176 kirjet b) otsivälju "Ei controlled terms"- leidsin 4 kirjet 2.1.2. Leia Tehnikaülikooli teaduri Malle Krunksi artiklid andmebaasis Compendex a) mitu artiklit leidsid? Leidsin 59 artiklit 2.2. Otsing andmebaasist ProQuest Science Journals 2.2.1.Leia Jim Browni artikkel Tools for all jobs. a) Ava artikli täistekst ja leia, millist firmat Jim Brown juhatab - Tech-Clarity Inc b) Kirjelda otsistrateegiat: otsiprofiil: au(Jim Browni) AND (Tools for all jobs) 2.2.2. Ava andmebaasi ProQuest tesaurus: Advanced Search/Thesaurus a) esita kitsamad ja laiemad märksõnad, mida võib kasutada ökosüsteemide (ecosystems) kohta kirjanduse leidmisel. - laiemad (broader) märksõnad: env...
GLOBAL WARMING Global warming is the observed century-scale rise in the average temperature of Earth's climate system. Since 1971, 90% of the increased energy has been stored in the oceans, mostly in the 0 to 700m region. Despite the oceans' dominant role in energy storage, the term "global warming" is also used to refer to increases in average temperature of the air and sea at Earth's surface. Since the early 20th century, the global air and sea surface temperature has increased about 0.8 °C (1.4 °F), with about two-thirds of the increase occurring since 1980.Each of the last three decades has been successively warmer at the Earth's surface than any preceding decade since 1850. More than 90% certain that most of global warming was being caused by increasing concentrations of greenhouse gases produced by human activities.In 2010 that finding was recognized by the national science academies of all majo...
Project Plan Bellacoola The Bella Coola Development Study merges community requirements for the envisioned facility and the alternative approaches to building on the Bella Coola Northern Pointe site. Consultants’ reports regarding structural considerations and tree evaluation are included for their continued application to the problem. An effort has been made to work with the full extent of space requirements currently voiced by the Western Division Management Center and the Bella Coola Village Organization. Other organizations were queried to form the basis of judgment in determining the overall need. This recognizes that as the program development progresses, tenant requirements may change, but the essential square footage and cubic limitations for a below grade structure will remain. In addition, it has been envisioned that jointly required facilities would be available for all organizations to use on a shared basis, utilizing mova...
Päikeseenergia Teele Meister 11.i PÄIKE Ø Suurim ja parim jõujaam maailmas! Ø Energiakogus, mis Päikeselt aasta jooksul maapinnale jõuab on ligikaudu 3000 korda suurem kui kogu maailma energiatarbimine Ø Päike annab maale kahe nädala jooksul rohkem energiat, kui kõik inimeste poolt kastutatavad fossiilsed küttevõimalused kokku Energeetika tulevik... Mis on päikesepatarei ehk Päikesekollektor? Ø Päikesepatarei on elektrotehniline seade, mis muundab Päikese valgusenergiat elektrienergiaks Ø Valdkonna spekter algab pisikestest taskukalkulaatoritest, kelladest ja lõpeb võimsate elektrijaamadega, kus väljundvõimsusi mõõdetakse megavattides Ø Tänapäevane silikoon-päikesepaneel kasuteguriga juba 10%, valmistati esmakordselt 1956 a. Esimesed 108 päikesepaneeli lennutati kosmosesse 1958 aastal Ø Päikesepatareisid kasutatakse näiteks kosmoselenn...
1. Ernst Julius Öpik was born in Oct. 23 1893 in Kunda, Estonia. He was a noted Estonian astronomer and astrophysicst. He went to University of Moscow to specialize in the study of minor bodies, such as asteroids, comets, andmeteors. He completed his doctorate at the University of Tartu. 2. After 4 years at Moscow Observatory he became Director of the Astronomy Department. From 1921-1944 he was an Associate Professor at Tartu University, and from 1930-34 visiting scientist at Harvard University. 3. Öpik was one of the most outstanding astrophysicists of his generation, with wide- ranging interests in the physical sciences. Among his many pioneering discoveries were:the first computation of the density of a degenerate body, named the white dwarf; the first accurate determination of the distance of an extragalactic object (Andromeda Nebula;the prediction of the existence of a cloud of cometary bodies encircling ...
Häädemeeste Keskkool Kristen Sepp KOSMILISED KIIRED Referaat Juhendaja: Raimo Pruul Häädemeeste 2012 Sisukord Mis on kosmilised kiired?.................................................................................................................... 3 Kust need tulevad?............................................................................................................................... 4 Primaarkiirgus...................................................................................................................................... 5 Sekundaarkiirgus..................................................................................................................................6 Ajalugu................................................................................................................................................. 7 Kasutatud allikad.....
M A A TE A Maa kiirgusbilanss D U S Maa summaarne kiirgusbilanss M A A TE A D U S M A Päikese lühilainelise A kiirguse muundumine TE atmosfääris ·Hajumine (scattering) A ·Peegeldumine (reflection) D ·Neeldumine (absorption) U S Vasakul: pilvitu taeva korral Paremal: pilvise taeva korral Kiirgusega seotud mõisteid ja seaduspärasusi M Insolatsioon Päikeselt saab...
The Romans came to Britain nearly 2000 years ago and changed our country. The Romans lived in Rome, a city in the centre of the country of Italy .One day, some years before Jesus Christ was born, the Romans came to Britain. First invasion - Caesar's first raid In August 55 B.C. (55 years before Jesus was born) the Roman general, emperor Julius Caesar invaded Britain. He took with him two Roman legions. After winning several battles against the Britons in South-East England he returned to France. Second invasion - Caesar's second raid In 54 B.C. Julius Caesar came to Britain again landing at Walmer near Deal in Kent. This time he brought with him five legions (30,000 foot soldiers) and 2,000 cavalrymen (horse riders). This time the Romans crossed the River Thames. After more fighting, the British tribes promised to pay tribute to Rome and were then left in peace for nearly a century. Third and final invasion In 43 A.D. (43 years after Je...
2. HARJUTUSÜLESANNE 2.1. Otsing andmebaasist Compendex Engineering Village platvormil. Avalehel vali andmebaas Compendex - jäta linnuke kastikesse Compendex , teiste andmebaaside eest võta linnuke ära ja vaata, kuidas muutuvad otsiväljad otsivormingu paremas aknas. Tutvu andmebaasi ülesehituse ja otsivõimalustega: lihtotsing: Easy Search; kompleksotsing: Quick Search; tesaurus, indeksid:Thesaurus, Browse Indexes. Kui sisenesin andmebaasi, oli linnuke ees lisaks Compendex'ile Referex'il. Sellel juhul sai otsiprofiiliks olla ainult märksõnad (keyword), täpsustada sai ka autorit (author), pealkirja (title) ja publitseerijat (publisher). Samuti puudus võimalus täpsustada dokumenditüüpi (type of document), keelt (language) ja käsitluse tüüpi (type of treatment). Kui võtsin Referex'ilt linnukese eest, avanes otsiprofiilide sisestamiseks järgmine vaatepilt: Täpsustuse koha pealt selline vaatepilt: 2...
Norther n Lights Kaisa Kask Introduction 1. How and where Northern Lights appear? 2. How the Northern Lights got their colors? 3. Do the Northern Lights emit sound? How and where Northern Lights appear? • Charged particles collide with molecules • Generate a glow • The strongest auroras are quite bright • The aurora occurs above: altitudes of 80 km infrequently above 500 km normal altitudes 110 and 200 How the Lights got their colors? • Every gas creates a different color • neon lights: helium – pink/white neon - red/orange argon - lavender krypton - gray/green The colors of auroras • Determined by gases in the Earth’s atmosphere • Solar particles collide with different gases • Oxygen (300km) – a rare red aurora • Oxygen (100-300km) – yellow-to-green aurora Do the Northern Lights emit sound? • Subject of discussion • Proven that people can hear...
Sustainable city planning Sandra Erik 11L What is sustainable city planning? • A sustainable city, or also know as eco-city, is a city designed with consideration of environmental impact, inhabited by people dedicated to minimization of required inputs of energy, water and food, and waste output of heat, air pollution - CO2, methane, and water pollution. • It should meet the needs A sustainable city should be able to... • feed itself with minimal reliance on the surrounding countryside, and power itself with renewable sources of energy. • create the smallest possible ecological footprint • produce the lowest quantity of pollution possible • efficiently use land • compost used materials - Practical Achievement • Different agricultural systems - agricultural plots within the city – reduces distance. • Renewable energy sources - wind turbines, solar panels,...
UURIMUSLIK TÖÖ SARNASUSED REFERATIIVNE TÖÖ Protsess mille käigus Uurimistöös ja referatiivses Referatiivse töö eesmärk on analüüsitakse uuritavat töös kasutatakse uuritavat anda teemast ülevaade ning probleemi süstemaatiliselt ja probleemi käsitlevaid jõuda erialase kirjanduse ajakohaselt struktureeritud refereeringuid erinevatelt otsimise ja sellega töötamisel viisil. Tulemuseks on kirjalik autoritelt, kuid nende omapoolsete järeldusteni, aruanne. Valdavalt võrdlemise ja analüüsi käigus mis põhinevad kogutud analüüsiva iseloomuga - tuleb jõuda omapoolsete materjalil. Referatiivne töö olulisel kohal on töö autori järeldusteni. Mõlemad on on teatud probleemi või järeldused, tõlgendused ja suunatud ühele probleemile teema kokkuvõtlik teaduslik üldistused. See on teadustöö, ning eesmärgiks on leida ülevaade...
Tartu Ülikool Sotsiaal- ja Haridusteaduskond ELU PÄIKESEENERGIAL Referaat Koostas: Sanna Helena Koger KELA2 Bak AÜ Juhendaja: Margit Teller Tartu 2013 Sissejuhatus Valisin referaadi teemaks „elu päikeseenergial“ seetõttu, et teatud mõttes puutun sellega kokku peaaegu iga päev. Nimelt töötan lasteasutuses, kus 2009 aasta juunis valmis Euroopa Liidu regionaalarengu fondi raha abil projekt "Valga lasteaia Kaseke hoone rekonstrueerimine energiasäästliku passiivmaja pilootprojektina". Projekti kogumaksumus oli 22,8 miljonit krooni, millest Euroopa Liidu toetus KOIT programmi kaudu oli 16,8 miljonit krooni ning 6 miljoni krooniga finantseeris töid Valga linn. Kütteenergiat kulub 10 korda vähem kui tavalises uues lasteaias ning küttevajadus väheneb vana amortiseerunud maja omaga võr...
accessible ligipääsetav, kättesaadav admittedly omaks võtvalt, möönvalt affordable rahaliselt lubatav agricultural põllumajanduslik alcove seinanišš, (magamisaseme) seinasüvend ample rikkalik, rohkem kui piisav attic pööning bedsit ühetoaline korter brick pillars tellistest tugisambad bungalow ühekorruseline maja caravan haagis-autoelamu carpenter puusepp cellar kelder compatible kokkusobiv, ühendatav concrete betoon confession ülestunnistus conservationist looduskaitsja council house munitsipaalmaja descent laskumine detached eraldiseisev distinguished silmapaistev, kuulus district piirkond, rajoon draped curtains pikad paksud kardinad draught tuuletõmbus drill puurima ecological loodusega seotud energy usage energiakasutus excavation väljakaevamine flannel coat flanelljakk forgery võltsing fowl kodulind fully-equipped täisvarustustatud fully-furnished täielikult möbleeritud genuine ehtne glass front m...
Infootsing raamatukogu andmebaasidest 2.1. Otsing andmebaasist Compendex Engineering Village platvormil. 2.1.1. a) Thermal treatment and physical properties and polyethylene b) ((((thermal treatment) WN All fields) AND ((physical properties) WN All fields)) AND ((polyethylene) WN All fields)) c) 200 artiklit d) Thermal treatment and physical properties and polyethylene e) (((((thermal treatment) WN CV) ) AND ((physical properties) WN CV) ) AND ((polyethylene) WN CV) ) f) 4 artiklit 2.1.2 a) 69 artiklit 2.2. Otsing andmebaasist ProQuest Science Journals. 2.2.1 a) Jim Brown heads a management consulting firm, Tech-Clarity Inc. in Media, Pa. b) Valisin advanced search. Sealt sisestasin otsiprofiili "Tools for all jobs" in Document title. Tegin linnukese full texti ette, autoriks kirjutasin "Jim Brown". Dokumendi tüübiks valisin Article. 2.2.2 a) · laiemad märksõnad: environment · kitsamad märksõnad: aquatic...
The Easter Island Made by: Käty Kivirand Studygroup: MY08 Supervisor: Lugina Olga Easter Island(Rapa Nui, Spanish: Isla de Pascua) is a Polynesian island in the southeastern Pacific Ocean, at the southeastern most point of the Polynesian triangle. Easter Island is one of the most remote islands on Earth. Easter Island is only 15 miles long and 10 miles wide. The Polynesian Triangle is a region of the Pacific Ocean anchored by three island groups: Hawaii, Easter Island and New Zealand, often used as a simple way to define what constitutes Polynesia. The island has an area of 163.6 km2. Population is about 3791 (3304 people living in the capital of Hanga Roa). On July 11, 2010 at 18:15:15 a total solar eclipse occurred for the first time in Easter Island in over 1,300 years. Lan Chile flies to Easter Island, with flights operating between Santiago, Chile and Papeete,Tahiti. Airfa...
Green Technologies - innovation and climate change sustainagility Scientists can examine ice, but they cannot tell out anything about our future. Even if scientist has lived thousand years he won't be able to do it. The graph in video shows that the amount on carbon dioxide rises and then rises the temperature, but it is not so, it is exactly the opposite. One way to save energy is to build better buildings, because big headquarters are built to last only for 30-35 years. Building them up and pulling them down needs a lot of energy and about 30% of building energy is spent on it. It is thought that if in Tokyo 50% of all roofs are green it will save 1 million dollars a day of Tokyo businesses in cooling costs. Street light use 5% of energy, but it can be reduced to 2%. Usual TVs should be replaced with Plasma TV, because it saves energy more. By driving electic-car, it is possible to save energy a...
Environmental issues in Brazil Madis Pokk Facts about Brazil Capital: Brasilia Largest city: Sao Paulo Official language is Protugese Total area: 8 515 767 km² Population is 193 milion people Deforestation cutting down rainforest The highest rate in world of cutting down rainforest Major problem in Brazil Over 600 000 km² destroyed The problems that comes with deforestation New plants can't grow Global warming Life for animal Greenhouse gases Why they are cutting rainforest? More place for new homes To build new roads Selling the lumber to Japan To generate electricity Trees are used in flooring, furniture and other items Make more space for grazing lands Solution To enforce their anti-logging laws Provide alternatives to poor farmers Use less firewood and paper products Recycle old furniture and wood Educate yourself Ar...
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