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Gotowa bibliografia na temat „SOLAR BOASTS”

Autor: Grafiati

Data publikacji: 11 września 2023

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Artykuły w czasopismach na temat "SOLAR BOASTS"

Zhao, Xiang Yang, i Yu Jin. "Development of a Test Platform for Stand-Alone PV Systems". Advanced Materials Research 433-440 (styczeń 2012): 6409–13. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6409.

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To verify the design of a standalone photovoltaic (PV) system, a test facility has been installed. This paper describes a platform to test the stand-alone solar system according to the IEC62124 standard. Essentially, this entire system involves the integration of a Personal Computer (PC), Data Acquisition (DAQ), an AC load and a solar array simulator (SAS) to test and simulate a stand-alone PV system. The main functions of this test facility are data acquisition, display, save and analysis data and print reports. The information obtained by monitoring parameters, such as average battery’s temperature, voltage and current is fed to the PC via the DAQ for analysis. This customized control interface has been developed by utilizing Labview software. This new system boasts of high accuracy measurements coupled with the commercial viability of low cost.

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Numata, Masako, Masahiro Sugiyama, Wunna Swe i Daniel del Barrio Alvarez. "Willingness to Pay for Renewable Energy in Myanmar: Energy Source Preference". Energies 14, nr 5 (9.03.2021): 1505. http://dx.doi.org/10.3390/en14051505.

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The increased use of renewable energy is imperative as a countermeasure to climate change. As with conventional electricity generation technologies, public acceptance of renewables is an important issue, and willingness to pay (WTP) is a widely used indicator to assess such public attitudes. Unfortunately, the literature to date mostly covers developed countries, with few WTP surveys in developing countries. Tackling climate change is an urgent issue for these developing countries; therefore, understanding of public attitudes toward renewables in developing countries is crucial. This study conducted the first survey on WTP for introducing renewable energy in Myanmar. Although Myanmar boasts abundant renewable energy resources, including solar power and biomass in addition to large-scale hydro plants, its resources are not being properly utilized to generate electricity. This study surveyed WTP for power generation by solar photovoltaics, small hydropower, and biomass facilities. The results showed the highest WTP for solar power (USD 1.92) with 10% share in the energy mix, and lower WTP for biomass and small hydropower electricity generations (USD 1.13 and USD 1.17, respectively). Careful public communication is thus crucial for expanding biomass and small-scale hydro power plants.

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Liu, Wei. "Recent Progress of Hole Transport Layers of Inverted Perovskite Solar Cells". Highlights in Science, Engineering and Technology 27 (27.12.2022): 349–54. http://dx.doi.org/10.54097/hset.v27i.3777.

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Perovskite solar cells, also known as PSCs, have become a potentially viable choice for a source of clean energy. This is especially true for the inverted structure, which boasts high stability and allows for synthesis by solution at low temperatures. In the inverse structure, one of the most important parts is called the hole transport layer, which plays a key role in acting as a substrate and transporting holes. Several studies on high-temperature liquids have been carried out as part of an effort to effectively enhance the device performance of inverted perovskite solar cells (IPSCs). In addition to common organic components, including PEDOT: PSS and PTAA, this paper also provides information regarding inorganic HTL materials, such as NiOx and compounds based on copper. This study discusses in depth the benefits and drawbacks of these four materials, as well as potential avenues for future research and development, such as the application of dopants and various interface optimization methodologies. It may be possible to improve the PCE of IPSCs as well as the stability if HTL materials are modified. This paper provides new researchers with a solid foundation and direction for optimizing HTL materials.

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ZIELIŃSKI, ARTUR. "TEMPERATURE DIVERSIFICATION OF THE SURFACE LAYER OF WATER IN THE KARST LAKES IN THE STASZÓW REGION (NIDZIAŃSKA BASIN)". Badania Fizjograficzne Seria A - Geografia Fizyczna, nr 12 (72) (15.12.2021): 181–89. http://dx.doi.org/10.14746/bfg.2021.12.10.

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The north-eastern part of Nidziańska Basin, near Staszów, boasts a large grouping of small but relatively deep lakes of karst origin. In 2010, 26 of them underwent regular measurements of the temperature of their surface layer of water. The results show that although the basins are situated close to each other and the area has similar characteristics, the temperature differs significantly. The thermal differences reach 11.6ºC. The warmest lakes appear to be Lake Łajba, Duży Staw, Lakes Torfowe I and Torfowe II. However, the coldest surface water is in lakes Piąty Staw, a small unnamed lake located near Lake Ciemne and an unnamed lake sandwiched between Lake Szyja and Lake Jasne.The fact that the temperature of the water goes up results directly from solar radiation, which was the strongest in the case of Lake Łajba, located in an open area. However, the coldest basins were located in the central parts of the lakes of the floating peat islands. Those biogenic islands are perfect “insulators”, protecting the water from thermal radiation. Moreover, the lakes which are fed with soligenous water supplies, tend to have a lower temperature.

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Mungondori, Henry H., Spencer Ramujana, David M. Katwire i Raymond T. Taziwa. "Synthesis of a novel visible light responsive γ-Fe2O3/SiO2/C-TiO2 magnetic nanocomposite for water treatment". Water Science and Technology 78, nr 12 (29.12.2018): 2500–2510. http://dx.doi.org/10.2166/wst.2019.004.

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AbstractThis work investigates the preparation of a magnetically recoverable photocatalytic nanocomposite of maghemite nanoparticles coated with silica and carbon doped titanium dioxide. The novel nanocomposite boasts the advantages of efficient photocatalytic degradation of organic pollutants in water and ease of recovery of the fine particles after water treatment. The photocatalytic nanocomposite was successfully synthesized through a stepwise approach via co-precipitation and sol-gel methods. Characterisation by Fourier transform infrared (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) substantiated the existence of the intended structure of the nanocomposite and the particles were found to be in the size range of 15–22 nm with a quasi-spherical shape. Brunauer–Emmett–Teller (BET) surface area analysis revealed an average surface area of 55.20 m2/g, which is higher than that of commercial TiO2 (Degussa P25, 50.00 m2/g), and an average pore diameter of 8.36 nm. A 5 ppm methylene blue solution was degraded with an efficiency of 96.8% after 3 h of solar irradiation, which was 19.7% greater than using the same photo-catalyst under strict UV light irradiation. Photo-catalysis using these nanoparticles was observed to be very effective. The prepared novel visible light active nanocomposite has great potential for incorporation into water treatment systems because it exhibits good stability and magnetism, as well as high photocatalytic efficiency.

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Pappa, Pavithra Chidambaram, Dahlia Devapriya i S. Ewins Pon Pushpa. "An Improved Search Algorithm for WSN with Charging Nodes". Journal of Network Security Computer Networks 9, nr 2 (28.07.2023): 15–22. http://dx.doi.org/10.46610/jonscn.2023.v09i02.003.

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The existing semi-centralized stochastic election approach, Stochastic Election of Appropriate Range Cluster Heads (SEARCH) is analyzed and features are improved which, boasts low time cost, improved stable period, and eliminates the unfavorable scenario, that no cluster head emerges during some speciﬁc rounds. However, the implementation of SEARCH in WSNs with solar charging nodes offers very marginal improvement in a stable period. This proves the inefficiency of the algorithm in handling these charging nodes. The improvement offered aims to make the algorithm, more energy aware and hence comparatively well organized in handling the charging nodes in the network. This improvement, equipped with dynamic tracking of instantaneous node energy shows a promising way to extend clustering algorithms to networks with chargeable nodes. In addition, the existing SEARCH algorithm’s cluster head election procedure lacks a futuristic view of the minimum energy requirement for successful operation throughout an entire round. Intermediate cluster head death can be detrimental, to network performance by paralyzing the corresponding clusters, resulting in total data transmission failure of all nodes in that cluster. Implementing the improved SEARCH algorithm drastically reduces the bit loss by 95%, with increasing the transmitted bits successfully by 4%. The overall lifetime of the WSN improves by around 30% and the number of cluster heads dying prematurely in the middle of round operation is reduced by 89%. This paper analyzes and refines a current clustering algorithm, thereby promisingly enhancing its capacity to boost the overall network performance.

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Dwicaksana, Made Puji, I. Nyoman Satya Kumara, I. Nyoman Setiawan i I. Made Aditya Nugraha. "REVIEW DAN ANALISIS PERKEMBANGAN PLTS PADA SARANA TRANSPORTASI LAUT". Jurnal RESISTOR (Rekayasa Sistem Komputer) 4, nr 2 (28.10.2021): 105–18. http://dx.doi.org/10.31598/jurnalresistor.v4i2.732.

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This paper aims to review the current development of vessels with solar power to reference the research and development of solar power vessels in Indonesia. The research method is a systematic literature review on the development of solar-powered vessels and includes an online survey of vessels using solar PV. This study found 86 solar-powered vessels consisting of boats, utility boats, ferries, houseboats, research, vehicle carriers, dive boats, and yachts developed from 1988 to 2020. These solar-powered vessels were built for various functions such as competitions, cleaning the environment, passenger transportation, and water tourism. Production of solar-powered vessels is increasing in terms of production volume, PV capacity, and battery capacity. In terms of PV configuration, the solar array is dominated by a fixed array structure. However, there have been innovations using sun-tracking, wind tracking airfoils, and expandable channels to increase PV capacity.

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Duda, Dariusz, i Wojciech Litwin. "The catamarans George and Energa Solar". Polish Maritime Research 14, nr 3 (1.07.2007): 3–6. http://dx.doi.org/10.2478/v10012-007-0011-3.

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The catamarans George and Energa Solar Since a few years students of the Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, have designed and built untypical floating units. Until last year their efforts were focused mainly on leg-driven boats. The boats of interesting design have taken part in yearly competitions: the International Waterbike Regatta. Their advanced design made it possible to compete with the best boats from Croatia, Holland, Germany, Turkey and Italy. Recently the students have designed and built a solar-energy-driven boat. It is the catamaran Energa Solar which took part in a prestigious regatta: the Frisian Nuon Solar Challenge carried out in Holland in summer 2006.

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Minak, Giangiacomo. "Solar Energy-Powered Boats: State of the Art and Perspectives". Journal of Marine Science and Engineering 11, nr 8 (30.07.2023): 1519. http://dx.doi.org/10.3390/jmse11081519.

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This paper presents an examination of the primary applications of solar energy as the main power source in the maritime sector, focusing on recent developments. A comprehensive review of the existing literature, including journal articles, proceedings, and patents, is conducted to identify three prominent areas for advancing solar energy-powered boats: maritime drones, sporting boats, and short-range touristic vessels. Maritime drones primarily serve as small autonomous boats for research, conservation, or military operations. On the other hand, sporting boats include nautical and energy design competitions involving students and enthusiasts. In terms of commercial interest, there is a growing demand for environmentally friendly and low-noise boats suitable for tourist activities, particularly in protected areas. Furthermore, specific and illustrative cases are explored in a dedicated section. Lastly, potential future perspectives are discussed and elucidated.

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Moya, Marcelo, Javier Martínez-Gómez, Esteban Urresta i Martín Cordovez-Dammer. "Feature Selection in Energy Consumption of Solar Catamaran INER 1 on Galapagos Island". Energies 15, nr 8 (9.04.2022): 2761. http://dx.doi.org/10.3390/en15082761.

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Maritime passenger transport in the Galapagos Islands–Itabaca Channel is based on boats with combustion engines that consume an annual average of 4200 gallons of fuel and produce about 38 tons of CO2 per year. The operation of the solar catamaran “INER 1” electric propulsion (PV) is a renewable and sustainable model for passenger shipping in the Galapagos Islands. In this regard, the detailed study of the relationship between the variability of solar radiation, the abrupt change of tides due to changes in wind speed and direction, and the increase in tourists, according to dry and wet seasons, cause high energy consumption. The boats must absorb energy from the electrical grid of the islands; this energy is from renewable (solar and wind) and, mostly, of fossil origin so identifying the source of the energy absorbed by the boats is essential. The aim of this study was to select the most influential attributes in the operation of the solar catamaran “INER 1” in the Galapagos Islands. The methodology for knowledge discovery in the databases was determined by selecting attributes that combine environmental, social, and energy variables affecting the energy performance of the solar catamaran. The energy consumption of the boats features a direct relationship with the attributes defined in this research as: (1) Energ (energy used), (2) Tur (tourists and residents), (3) Fotov (PV park), (4) Glrad (global radiation), (5) date (date and time), (6) Term9 (thermo-electric 9). Considering the six best attributes filtered by the proposed algorithms, 4.95% in the mean squared error parameter and a 98.94% accuracy in the classification and prediction of the energy consumed by boats were obtained.

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Rozprawy doktorskie na temat "SOLAR BOASTS"

Hammarlund, Tomas, Jesper Sundin i Johan Kövamees. "Solar Cell Powered Boat". Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326109.

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The objective of this project is to find out experimentally and through theoretical calculations and applications whether a cargo ship can be operated by means of solar cells. The project deals with the amount of research and applications already available in this area today and which areas could be developed and improved in future research. A radio-controlled miniature ship was purchased and modified to conduct tests on with solar cells. The data collected from these tests and the researched data were then analyzed to make calculations on real sized ships. A system was designed together with the miniature ship motors, the solar cells and an Arduino to carry out these tests. The miniature ship’s solar cells contributed with about 30% of the total power. The two theoretical ships had a lower percentage of about 4% and 8% respectively at maximum throttle. An economical calculations where both a hybrid cargo ship and an fully electrical ship concluded that it’s expensive but there is a profit in build each over the course of 20 years.

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Ma, Jiya. "A Genetic Algorithm for Solar Boat". Thesis, Högskolan Dalarna, Datateknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3488.

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Genetic algorithm has been widely used in different areas of optimization problems. Ithas been combined with renewable energy domain, photovoltaic system, in this thesis.To participate and win the solar boat race, a control program is needed and C++ hasbeen chosen for programming. To implement the program, the mathematic model hasbeen built. Besides, the approaches to calculate the boundaries related to conditionhave been explained. Afterward, the processing of the prediction and real time controlfunction are offered. The program has been simulated and the results proved thatgenetic algorithm is helpful to get the good results but it does not improve the resultstoo much since the particularity of the solar driven boat project such as the limitationof energy production

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Ahlbäck, David. "KONCEPTANALYS OCH DRIFTFALLSOPTIMERING AV "FREEPOWER – SOLAR BOAT"". Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-39634.

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This report aims to analyse the concept of Bjurtech AB:s ongoing development project “Freepower - Solar Boat”. Main focuses are technical optimization and usability from an end user perspective. Bjurtechs idea is to build an electric-powered 5-meter boat charged by integrated photovoltaic cells. The project´s intended pilot market is Sri Lankas coastal fishing fleet. A version for the Scandinavian market is also under consideration and both concepts are analysed in this report. Initially a 4.5-meter prototype was built and tested to try the concept in practise. Methods used are computer simulations in Matlab based on data collected from trail runs with the prototype combined with weather data from Sri Lanka and Sweden. The data and simulations were then used to try to determine whether the concept works for the intended target markets, as well as how the assumed user profiles affect usability and technical deterioration such as battery life. The approach used was to try to determine how to maximize the availability of the system in regards to battery charge level over the whole year at the same time as maximizing distance and boat speed per day. The systems CO2 emissions were then compared to an equivalent petrol-powered boat with the same amount of running hours over 25 years. The main findings of the study are, provided 12 to 14.5 nautical miles is regarded as a sufficient daily distance at 3 to 3.7 knots boat speed, that the system can deliver a high level of availability all year around for fishing operations in Sri Lanka. Considering the demand for daily availability is not as high for the assumed recreational use in Scandinavian markets the system is deemed to perform at a satisfactory level at these latitudes as well. The CO2 comparison showed a significant emissions decrease in the case of year around operations in Sri Lanka. In Scandinavia a reduction is obtained if there are a sufficient amount of operating hours per year. An increase of the installed rated power, Wp, was found to be the most cost efficient way of improving overall performance and that the prototypes photovoltaics of 580 Wp should in both the Sri Lankan and Scandinavian case be increased to a minimum of 800 Wp. Finally it was concluded that user awareness of how system operation impacts battery life can be of significant importance for a positive environmental result and long technical lifetime.

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Ogden, George Lloyd. "Extraction of Small Boat Harmonic Signatures From Passive Sonar". PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/728.

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This thesis investigates the detection and classification of small boats using a passive sonar system. Noise radiated from a small boats consists of broadband noise and harmonically related tones that correspond to parameters in the boats engine and propeller. A novel signal processing method for detection and discrimination of noise radiated from small boats has been developed. There are two main components to the algorithm. The first component detects the presence of small boats by the harmonic tonals radiated from the boat propeller and engine. The second component was designed to extract the a signature from passive sonar data. The Harmonic Extraction and Analysis Tool (HEAT) was designed to estimate the fundamental frequency of the harmonic tones, track the fundamental frequency using a Kalman filter, and automatically extract the amplitudes of the harmonic tonals to generate a harmonic signature for the boat. The algorithm is shown to accurately extract theses signatures, and results show that the signatures are unique enough that the same boat passing by the hydrophone multiple times can be recognized.

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Friberg, Sebastian. "Konceptutveckling av justerbart solcellstak för fritidsbåtar : Ett utvecklingsprojekt med syfte att öka laddningskapaciteten för elektriska fritidsbåtar". Thesis, Karlstads universitet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84885.

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Denna rapport redovisar processen och resultatet av ett examensarbete som utgör en del av examinationen för högskoleingejörsexamen i innovationsteknik och design vid Karlstads universitet. Projektet är gjort på uppdrag av Glava Energy Center för Bowters räkning med uppdraget att ta fram lösningar som kan utöka laddningskapaciteten för elektriska fritidsbåtar. Examensarbetet utfördes vårterminen 2021 och omfattar 22.5 högskolepoäng. Projektet är uppbyggt kring fem faser, planering, discover, define, develop och deliver där syftet är att först identifiera rätt problem för att sedan kunna komma fram till rätt lösning. Det finns flera sätt att angripa detta projekt, speciellt om man väljer att fokusera på varför laddningskapaciteten behöver utökas från första början, vissa av dessa lösningar blir tyvärr också irrelevanta på grund av faktorer som berör kostnader eller tekniska aspekter. Detta arbete har därför identifierat och utvecklat lösningar som genom att installera fler solceller kan utöka laddningskapaciteten. På båten finns det flera ställen att installera solceller på, men det är svårt att bortse från att en av de bättre platserna ur effektsynpunkt är att placera solceller på något typ av tak där de inte blir skuggade, men vad tycker egentligen användarna om det? En användarintervju utfördes som gav svar på detta. Användarna kan tänka sig att ett tak är en bra sak att ha när det bli riktigt varmt eller man bara vill njuta av lite skugga som omväxling men att man förmodligen är ute med båten för att just få njuta av solen. Ett tak som går att fälla undan eller justera på något annat sätt skulle kunna vara en lösning på det problemet. En mängd olika taklösningar samt icke taklösningar har undersökts men efter användandet av olika kända sållningsmetoder stod det klart att arbetet skulle gå vidare med en taklösning som är delvis justerbar, alternativt helt fast. Detta har lett fram till att tre koncept tagits fram som alla bidrar med en utökad laddningskapacitet. Koncept Glidande stomme och Skjutbart tak bygger på en enkel konstruktion som tillåter en respektive två standard solpaneler att forma ett tak över båten. De olika koncepten kan justeras till olika positioner för att på det sättet kunna erbjuda användarna en variation av skugga och sol utefter tycke och smak. Koncept Origami flasher bygger som namnet hintar om på ett vikmönster från den traditionella konstformen origami. Detta koncept är lite mer experimentellt men ger i teorin ett väldigt stort skydd från solen i utfällt läge samt stor yta för montering av solceller, samtidigt som det i hopfällt läge täcker absolut minst yta av dessa tre koncept vilket är fördelaktigt för de användare som vill njuta av solen.
This thesis presents the process and it’s results from a concept development project. The thesis is part of the examination for a Bachelor of Science in Innovation Technology and Design at Karlstad University. The project was commissioned by Glava Energy Center on behalf of Bowter with the task of developing solutions that can increase the charging capacity for electric leisure boats. The thesis was written during spring 2021 and comprises 22.5 credits. The project is built around five phases, planning, discover, define, develop and deliver. The purpose is to first identify the right problem in order to be able to produce the right solution. There are several ways to approach this project, especially if you choose to focus on why the charging capacity needs to be increased in the first place, some of these solutions unfortunately also become irrelevant due to factors affecting costs or technical aspects. This work has therefore identified and developed solutions which, by installing more solar cells, can increase the charging capacity. There is several places on the boat that are suitable for install solar cells, but it is difficult to ignore that, from a power point of view, the best place to instal solar cells is on some sort of roof. But what does the user really think about it? A pre-study, including a intervju with users was conducted that provided answers to this question. The user can imagine that a roof is a good thing to have when it gets really hot or when you just want to enjoy a little shade for a change, but that the real objective with the usage of the boat probably is to enjoy the sun. A roof that can be folded away or adjusted in some other way could be a solution to that problem. A variety of roof solutions and non-roof solutions have been investigated. After the use of various known screening methods it was decided that the work would continue with a roof solution that is partially adjustable, or completely solid. The project have after that chosen to present three concepts that contribute to an increased charging capacity by help of a partially adjustable roof. Concept Glidande stomme and Skjutbart tak is based on a fairly simple construction that allows one respectively two standard solar panels to form a roof over the boat. The different concepts can be adjusted to different positions in order to offer users a variety of shade according to taste and needs. Concept Origami flasher, as the name suggests, is based on a folding pattern from the traditional art of origami. This concept is a bit more experimental but provides, in theory, second largest protection from the sun in unfolded position. Meanwhile, in collapsed position, the Origami flasher concept covers the least area of these three concepts, which is advantageous for those users who want enjoy the sun.

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Sweydan, Francois. "Recherches sur le système de représentations symboliques de l’art néolithique aux textes des pyramides- Origines et formation des éléments de la religion solaire de l’Egypte antique". Thesis, Lyon 2, 2011. http://www.theses.fr/2011LYO20009.

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Dès les premières dynasties, le pictogramme fut dans l’écriture le prolongement des représentations figuratives naturalistes, logogrammes dans les palettes funéraires décorées protodynastiques. Ce constat nous porte à les mettre en correspondance avec l’art pariétal du néolithique nubien, le prédynastique égyptien, et celui des aires culturelles périphériques. La reconsidération des pétroglyphes en tant que symboles et idéogrammes, c’est-à-dire des mythogrammes autant que des logogrammes-phonogrammes polysémiques permet de dégager un système structurel de représentations symboliques universel dans la vallée du Nil. Essentiellement funéraire, il est organisé autour d’une nouvelle lecture en relation aux mythes fondateurs de l’Œil d’Horus/solaire, s’exprime dans des rites primitifs de revivification, de renaissance, néolithiques et prédynastiques, explicités ensuite durant les premières dynasties sur des tablettes, des sceaux-cylindres votifs, et l’onction du mort avec les sept huiles canoniques et, enfin, dans les Textes des Pyramides. Contrairement à l’idée commune d’opposition des notions de Nature-Culture, il est question de les conjuguer, de réconcilier la dualité non binaire et de voir, par exemple, les fonctions héliotrope et/ou héliophore des animaux du bestiaire soudanien, avec Sokar le faucon funéraire, les garants bienveillants des métamorphoses et de renaissance du soleil/des défunts, par ailleurs, félidés, canidés, antilopes…, investis du numineux des divinités tutélaires. À la lueur d’une nouvelle lecture du mythe “osirien” primitif de métamorphose, nous reconsidérons les conceptions sur le sacrifice animal sur des bases d’anthropologie religieuse. Loin d’une maîtrise et soumission de la nature, et d’un diffusionnisme, l’interculturalité de la pensée mythique archaïque première dans la vallée nubiano-égyptienne et des régions périphériques multiethniques implique, vis-à-vis du monde naturel et des forces spirituelles numineuses, la transculturalité des conceptions solaires et le partage pluriculturel, transhistorique des croyances résurrectionnelles polycycliques. Ainsi, les pétroglyphes d’animaux, les scènes de chasse animale, les représentations de barques, de sandales, etc., sont de nature funéraire votive, apotropaïque
Since the beginning of the first dynasties, the pictogram in writing was the extension of naturalistic figurative representations, logograms in the decorated funerary protodynastic palettes. This statement carry us to link them with the parietal art of Neolithic Nubia, the egyptian Predynastic, and peripheral cultural areas. We have reconsidered the petroglyphs as polysemic symbols and ideograms, i.e. mythograms as well polysemic logograms-phonograms, allowing us to draw up a structural system of symbolic representations, universal in the Nile valley. Basically funerary, the system is organised around a new reading in connection with the founding of the ‘Eye of Horus’/solar myths, and express itself in primitive Neolithic and Predynastic rites of revivification, rebirth, more explicit afterwards during the first dynasties on labels, votive cylinder-seals, and anointing the deads with the seven holy canonical oils, finally in the Pyramid Texts. Contrary to the common idea which opposite the Nature-Culture notions, there is some question to combine them, to reconcile the non-binary duality and to see, for example, the heliotrope functions and/or heliophore animals of the sub-Saharan bestiary, with Sokar the funerary hawk, the benevolent guarantors for the rebirth and metamorphosis of the sun/deads; otherwise felids, canids, antelopes…, invested by the numinous of the protecting divinities. In consequence of a new reading of the primitive ‘osirian’ myth of metamorphosis, we have reconsidered the conceptions about animal sacrifice on the basis of religious anthropology. Far from bringing under control and submission of nature, and diffusionnism, the intercultural (cross-cultural) of the first archaic mythic thought in the multi-ethnic nubian-egyptian valley and associated neighbouring areas involves, towards the natural world and the numinous spiritual strengths, the cross-cultural of solar conceptions and multicultural, trans-historic sharing of the polycyclic resurrectional believes. Thus, the animal petroglyphs, cynegetic scenes, boats and sandals representations, etc., are of funerary votive, apotropaic nature

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KUMAR, RAUNAK. "EXERGETIC ANALYSIS OF PARABOLIC TROUGH COLLECTORS USING VARIOUS MONO & HYBRID NANO FLUIDS". Thesis, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18969.

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Solar boasts itself to be most sustainable, employable and ecologically acceded renewable sources of energy due to its simplicity of usage and low environmental effect. Solar energy may be utilized for a variety of applications, including solar water heaters. Solar collectors are used for cooling and dehumidification in addition to room and water heating. Heat losses and fluid absorption characteristics, on the other hand, restrict the collector's efficiency. Alternative fluids, which are essentially the same as conventional fluids but include a specific quantity of suspension of metal or nonmetal particles, have been utilised to great success in solar collectors during the past several decades. Nanofluids are fluids that have microscopic particles suspended in them, thus the name. It has been established through numerous experiments and investigation that floating these nanoparticles enriches base fluid thermal properties, yielding better thermal conductivities than conventional fluids. As a consequence, nanofluids are more suited than traditional fluids for heat transfer enhancement applications. It has been proved to be one among the most popular and promising ways for improving and enhancing the concentrating power collector performance . This work intents to investigate various thermal and energetic based efficiency optimization of parabolic through collector using various mono and hybrid Nano fluids. The goal of this study was to improve the LS-2 parabolic trough model and examine the enhancing effects of mono and hybrid Nano fluids. The methodology of heat transfer analysis is used in this study to construct a software using the Engineering Equation Solver for the numeric simulation of the parabolic trough collector. Solar irradiation, inlet fluid temperature, and volumetric flow rate of heat transfer fluid are the primary inputs to the proposed model, while the thermal and exergetic efficiency is the main output. The final result and findings clearly shows the optimized condition for exergetic efficiency in addition to the optimized conditions for thermal efficiency.

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Shieh-XinChen i 陳學信. "Research and Development of a 2kW Solar Powered Boat". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/w5vu2p.

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碩士
國立成功大學
系統及船舶機電工程學系
102
In 21st century, the solar energy is the favorite renewable energy. The photovoltaic of our laboratory already research for few years. Now we try to apply our photovoltaic system in a 2kW solar powered boat. In this thesis, we design a fully complete solar powered boat monitoring system. The main system in solar powered boat is photovoltaic (PV) system and battery management system (BMS). In the photovoltaic system we use the quadratic maximization (QM) method to do the maximum power point tracking (MPPT). The ship on the water always swing, it will affect the MPPT tracking. So a faster MPPT method is necessary so we choosing the QM method. Every PV panel will connect to a DC/DC converter which can convert the solar power to the battery bank. Depends on the ship shape we use different model polysilicon PV panels. We also test the stability of the DC/DC converter. The battery management system (BMS) is use for manage the battery bank capacity. The main feature of BMS system is switching the battery bank to charge /discharge. In the BMS system has three different switching modes which is manual mode, time setting mode and battery bank voltage compare mode. We install our system to an 8 meter wooden ship and evaluation the system.

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Chen, Zhen-Zhe, i 陳振哲. "Application of CAD and CAM on Solar/Electric Boat". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/97838095065449393338.

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碩士
國立臺灣大學
造船及海洋工程學研究所
89
The inaugural Solar Splash, an international intercollegiate solar/electric boat regatta, was held in 1994. To participate in this event, the first solar/electric boat in Taiwan, National Taiwan University Solar/Electric Boat (NTUSEB), was started to build in 2000 as a student project. By using CAD and CAM applications, it can be easily to design and manufacture a boat with rational engineering approaches. The hull was constructed and produced from a CAD/CAM procedure, which is achieved by Rhinoceros software to design the three-dimensional hull form and MasterCAM to generate NC codes. Furthermore, a real size model can be cut by CNC machine. The SCRIMPTM process was utilized to fabricate the composite hull. A planing catamaran with hydrofoil assistance concept is developed as NTUSEB prototype. Series 62 is referred to determine the planing hull form. The resistance performance can be evaluated by UPYACHT program. And the influence on the distance between two demi-hulls can also be obtained by CFD software COMET. With the specification of design boat speed and characteristics of motors, the B-series propeller optimal design can be performed by using GA method.

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Hung-KuLin i 林泓谷. "System Design of an Eight Kilowatt Solar Powered Boat". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/46585m.

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Książki na temat "SOLAR BOASTS"

Off Grid Solar Power Simplified: For Rvs, Vans, Cabins, Boats and Tiny Homes. United States?: cleversolarpower.com, 2020.

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United States. National Aeronautics and Space Administration., red. International solar-terrestrial program data processing consortium. [Washington, DC: National Aeronautics and Space Administration, 1986.

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United States. National Aeronautics and Space Administration, red. International solar-terrestrial program data processing consortium. [Washington, DC: National Aeronautics and Space Administration, 1986.

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Anne, Bisese, i United States. National Aeronautics and Space Administration., red. Introduction to magnetic bearings. [Washington, DC: National Aeronautics and Space Administration, 1993.

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Averkiev, V. P. Shipboard fish scouting and electronavigational equipment. Wyd. 2. Accord, Mass: A.A. Balkema, 1985.

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Averkiev, V. P. Shipboard fish scouting and electronavigational equipment. Wyd. 2. New Delhi: Amerind Pub. Co., 1985.

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Vries, Dominic de. My Electric Boat: Electric Boat Propulsion, Batteries and Solar. Independently Published, 2017.

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Zukerman, Gudrun. DIY Solar : Guides for the Installation on Boats, RVs, Vans ,and Tiny Homes: Off Grid Solar Power. Independently Published, 2021.

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Howell, Jacob. DIY Mobile Solar Power 2020: The Complete Guide to 12 Volt Mobile Solar Power for Rv's, Boats, Vans, and Cars. Seattle Publishing Company, 2020.

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Części książek na temat "SOLAR BOASTS"

Schaffrin, C. "The Solar Boat “Korona”: Two Years of Experience". W Tenth E.C. Photovoltaic Solar Energy Conference, 813–15. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3622-8_207.

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Dahalan, Wardiah Mohd, Arif Fikri Kamil Firdaus, Megat Khalid Puteri Zarina i Noorazlina Mohamid Salleh. "Development of a Solar Tracker Using Servo Motor and Light Dependent Resistor for Electrical Boats". W Advanced Engineering for Processes and Technologies II, 141–54. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67307-9_14.

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Sutherland, Joshua, Alejandro Salado, Kazuya Oizumi i Kazuhiro Aoyama. "Implementing Value-Driven Design in Modelica for a Racing Solar Boat". W Disciplinary Convergence in Systems Engineering Research, 829–44. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62217-0_58.

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Gaur, Purnyatre, Aniket, Subhesh Kumar i J. P. Kesari. "Modeling and Simulation of Solar-Powered Remote-Operated Floating Trash Harvesting Boat". W Lecture Notes in Mechanical Engineering, 302–12. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9523-0_34.

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Montoya-Rivera, Manuela, Gilberto Osorio-Gómez i Juan Carlos Rivera Agudelo. "Cost Optimization of an Assembly Sequence of an Electric Propulsion Module of an Electro-Solar Boat". W Communications in Computer and Information Science, 210–21. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-20611-5_18.

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"Solar Boat". W Encyclopedic Dictionary of Archaeology, 1279. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58292-0_190843.

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Schaffrin, C., K. Bystron, A. Glunk i W. Henke. "THE SOLAR BOAT “KORONA”: IMPROVED INVERTER FOR DRIVING PURPOSES AND TWO YEARS OF EXPERIENCE". W 1991 Solar World Congress, 479–84. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-08-041696-0.50086-3.

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Jerome, Jerome K. "Chapter VII". W Three Men in a Boat and Three Men on the Bummel. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199537976.003.0028.

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George wonders—German love of order—‘The Band of the Schwarzwald Blackbirds will perform at seven’—The china dog—Its superiority over all other dogs—The German and the solar system—A tidy country—The mountain valley as...

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SCHAFFRIN, C., S. BENNDORF i S. SCHNEIDER. "THE SOLAR BOAT “KORONA”: A COMPLETE PHOTOVOLTAIC-POWERED SYSTEM". W Clean and Safe Energy Forever, 359–63. Elsevier, 1990. http://dx.doi.org/10.1016/b978-0-08-037193-1.50076-8.

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Weighill, Rob, i Florence Gaub. "JFC Naples Takes Over". W The Cauldron, 115–58. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190916220.003.0004.

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As the political process ceded prominence to military operations, this chapter illustrates how NATO transitioned from peace to war, dealing with a myriad of operational challenges as it took command of all national forces in a very short space of time. In particular it describes the difficulty of targeting in poor weather, the lack of surveillance capabilities, the absence of accurate and timely intelligence, and how Gaddafi’s forces adapted to the threat posed by NATO’s air and maritime forces. It offers insights into the complexities of conducting maritime embargo operations with competing priorities to grapple with dual use cargo, delivery of humanitarian aid (sometimes accompanied by weapons, explosives and associated materiel) and the preservation of life (SOLAS), principally refugees escaping Libya in small boats. Public expectation indicated a rapid end to combat operations and not long after the operation started, talk of a stalemate emerged. A number of peace initiatives were pursued, all ending in failure and merely confirming Gaddafi’s intention to retain power and avoid any notion of a ceasefire or capitulation.

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Streszczenia konferencji na temat "SOLAR BOASTS"

Sykes, Joshua P., Katelynne R. Burell, Zhaohui Qin i Timothy B. Dewhurst. "Use of Computational Fluid Dynamics to Model Free-Surface Effects on Hydrofoil Systems". W SNAME 13th International Conference on Fast Sea Transportation. SNAME, 2015. http://dx.doi.org/10.5957/fast-2015-056.

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Cedarville University competes annually in the Solar Splash competition, which involves teams of undergraduate students designing and racing boats powered by batteries and solar energy. In past years team members have used several analysis tools to estimate the drag and lift generated by both the hull of the boat or prospective hydrofoil systems. In 2014 Putnam, Dickert, and Wagner used ANSYS’s computational fluid dynamics (CFD)software, Fluent, to estimate the lift and drag of hydrofoils in a single-phase water flow. Their design used the standard “T-junction” design seen in Figure 1. In 2014 (the next team iteration) Howland used the same software to analyze the drag on an existing hull design while using a 2-phase water-and-air flow.

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Abdullah, M. O., i S. L. Leo. "Feasibility Study of Solar Adsorption Technologies for Automobile Air-Conditioning". W ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76064.

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An adsorption system driven by solar heat or waste heat can help to eliminate the use of ozone depletion substances, such as chlorofluorocarbons (CFCs) and hydro-chlorofluorocarbons (HCFCs). In recent years, adsorption system has witnessed an increasing interest in many fields due to the fact that this system is quiet, long lasting, cheap to maintain and environmentally benign. Although adsorption system is not commonly used for automobile air conditioning, adsorption-cooled mini-refrigerators have been marketed for recreational transports (motor homes, boats, etc). Hence, there exists a need for a creative design and innovation to allow adsorption technology to be practical for air conditioning in automobile. The objective of this paper is to present a comprehensive review on the past efforts in the field of solar adsorption refrigeration systems and also the feasibility study of this technology for automobile airconditioning purpose. It is a particularly an attractive application for solar energy because of the near coincidence of peak cooling loads with the available of solar power.

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Huang, Yuan Mao, Jen Chun Hush i Kuo-Juei Wang. "Design of a Remote Controlled Solar Powered Boat". W ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14255.

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This study presents design and fabrication of a remote controlled solar powered boat. Three-dimensional software Solid Works is used to construct the hull of the boat. The performance of solar cells is investigated, and an electric circuit is designed. After the conceptual design, the allocations of a DC motor, a paddle, an acceleration servo, a direction servo, solar cells and a battery are designed. The hull of the boat is fabricated by using foaming resin, all components are installed and a prototype of the remote controlled solar powered boat is fabricated. The boat is tested for speed, and the performance of the acceleration, deceleration and turning is acceptable.

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Taylor, Chris. "Great Salt Lake Exploration Platform". W 2016 ACSA International Conference. ACSA Press, 2016. http://dx.doi.org/10.35483/acsa.intl.2016.28.

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The Great Salt Lake Exploration Platform is a creative machine built to foster visual and performative research within the vastly under explored situated locale of the Great Salt Lake. GLSEP is a modular, flexibly deployable craft for a small group of people to remain upon the lake for limited durations of time, make work, and not die. Given the remote severity of this landscape the qualifier is significant. Storms appear quickly and can generate ten to twelve foot waves in tight oscillation. Coupled with the water’schemical density the lake is known to literally tear boats apart. Rather than being built and powered as a boat, with need of a marina to launch and a geometry to accommodate overland travel, the GSLEP is a deployable assembly providing necessary life support and research infrastructure (shade, fresh water, food and waste storage, solar power, communications,and evacuation provisions) to researchers operating on the Great Salt Lake, akin to off planet missions with immanent dangers and very limited rescue opportunities.

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Guellard, Bernard, Xavier de Montgros, Philippe Pallu De La Barriere, Guy Wolfensberger i Philippe D'oliveira. "An overview of electric and solar boats market in France". W 2013 World Electric Vehicle Symposium and Exhibition (EVS27). IEEE, 2013. http://dx.doi.org/10.1109/evs.2013.6915050.

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Nora, Chiang Ngai Ling, i Lai Hong Sang Ken. "Solar Electric Boat Development Programme". W 2020 8th International Conference on Power Electronics Systems and Applications (PESA). IEEE, 2020. http://dx.doi.org/10.1109/pesa50370.2020.9343975.

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Sharma, Aseem Kumar, i D. P. Kothari. "Solar PV potential for passenger ferry boats in India's National Waterways". W 2018 2nd International Conference on Inventive Systems and Control (ICISC). IEEE, 2018. http://dx.doi.org/10.1109/icisc.2018.8399035.

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Leung, C. P., i K. W. E. Cheng. "Zero emission solar-powered boat development". W 2017 7th International Conference on Power Electronics Systems and Applications - Smart Mobility, Power Transfer & Security (PESA). IEEE, 2017. http://dx.doi.org/10.1109/pesa.2017.8277736.

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Vageesha K., Sohan Singh Pradeep Singh Hajeri i Venkateshmurthy B. S. "Solar and wave powered catamaran boat". W INTERNATIONAL CONFERENCE ON RECENT TRENDS IN ELECTRICAL, ELECTRONICS & COMPUTER ENGINEERING FOR ENVIRONMENTAL AND SUSTAINABLE DEVELOPMENT: ICRTEEC-2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0094704.

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Guamán, F., J. Ordoñez, J. L. Espinoza i J. Jara-Alvear. "Electric-solar boats: an option for sustainable river transportation in the Ecuadorian Amazon". W ENERGY AND SUSTAINABILITY 2015. Southampton, UK: WIT Press, 2015. http://dx.doi.org/10.2495/esus150371.

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Raporty organizacyjne na temat "SOLAR BOASTS"

Ogden, George. Extraction of Small Boat Harmonic Signatures From Passive Sonar. Portland State University Library, styczeń 2000. http://dx.doi.org/10.15760/etd.728.

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