Bibliografie tematiche / Soilihi

Letteratura scientifica selezionata sul tema "Soilihi"

Autore: Grafiati
Pubblicato: 22 giugno 2024

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Soilihi".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Indice

  1. Articoli di riviste
  2. Tesi
  3. Libri
  4. Capitoli di libri
  5. Atti di convegni
  6. Rapporti di organizzazioni

Articoli di riviste sul tema "Soilihi":

1

Jones, Nick. "Soiling". Early Years Educator 2, n. 3 (luglio 2000): 42–43. http://dx.doi.org/10.12968/eyed.2000.2.3.15506.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
2

L., Sahana, Naveen Kumaar, Hans Peter Waldl, Prasun Kumar Das, Karthik Ramanathan, K. Balaraman e Indradip Mitra. "Impact of Soiling on Energy Yield of Solar PV Power Plant and Developing Soiling Correction Factor for Solar PV Power Forecasting". European Journal of Energy Research 1, n. 2 (14 luglio 2021): 21–29. http://dx.doi.org/10.24018/ejenergy.2021.1.2.7.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Across the world, the geographical conditions are varied, and the characteristics of dust depend on the local environmental conditions. The solar power generators must incorporate the soiling losses in their estimation for power output and therefore a methodology was developed to estimate the soiling correction factor. After extensive research, a comprehensive review was presented on the effect of soiling on performance of PV plants along with case studies of soiling experiments around the world. A soiling experiment was designed to develop the soiling correction factor. A methodology to calculate the soiling correction factor, which can be implemented in any location, was developed by analyzing the data from the soiling experiment. The effect of rainfall, humidity and wind on soiling was analyzed and documented. The performance of one 20 kWp PV plant was monitored to study the effect of weather-related parameters on the performance. The soiling correction factor varied from -1.36% to 3.67% during the period between June 2018 and June 2019 in Chennai. It was observed that the average PV conversion efficiency of the 20-kW plant was 11.75% and the average PR was 75%. It was observed that the correlation between module temperature and DC power; between humidity and DC power; between GTI and DC power varied every month. The soiling factor developed could be incorporated into the short-term day ahead solar forecasting model. The developed methodology could be applied at the any large-scale solar power plant around the world for yield assessment, designing as well as operational forecasting purposes.
3

Sanz Saiz, Carlos, Jesús Polo Martínez e Nuria Martín Chivelet. "Influence of Pollen on Solar Photovoltaic Energy: Literature Review and Experimental Testing with Pollen". Applied Sciences 10, n. 14 (9 luglio 2020): 4733. http://dx.doi.org/10.3390/app10144733.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
This work attempts to shed some light on the impact of organic soiling due to pollen on solar photovoltaic (PV) power generation. Apart from introducing several soiling-related pollen features, the previous works reporting soiling by pollen have been reviewed. Local observations from late winter to early spring showed that a rooftop PV system experienced both uniform and non-uniform soiling issues, which were mainly caused by pollen from nearby cypress specimens. In addition, this work publishes preliminary results regarding an artificial soiling test performed with pollen. In this test, soda lime float glass coupons were artificially soiled with fresh cypress pollen. A linear relationship was found between the pollen mass density (ρA) and the glass averaged transmittance (TAVE) for values up to 9.1 g/m2. In comparison with other artificial soiling tests performed with different soiling agents, the transmittance loss caused by pollen cypress deposition was relatively high and spectrally selective.
4

M. S. Pendke, P. Deshmukh, W. N. Narkhede B. W. Bhuibhar e M. Bhosle U. M. Khodke. "Studies on Effect of Sub-Soiling on Runoff, Soil loss and Soybean Yield Potential under Rainfed Condition". International Journal of Current Microbiology and Applied Sciences 10, n. 12 (10 dicembre 2021): 147–51. http://dx.doi.org/10.20546/ijcmas.2021.1012.016.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Marathwada region of Maharashtra state is basically a rainfed region. Soybean is a major crop grown particularly in kharif season. The monsoon behavior has become very uncertain during recent past. The rainfall, its uneven distribution and prolonged dry spells during kharif season affect the crop productivity particularly in Marathwada region. Therefore, effective management of rainwater for its in-situ conservation is the key point for sustaining productivity. Sub-soiling may be one of the technique for reducing runoff and soil loss and to increase the grain yield. Therefore, an experiment was conducted to study the effect of sub soiling on runoff and soil loss and also to increase the crop yield. It is concluded that subsoiling in alternate year or every year with horizontal spacing of 1.5 m or 2.0 m is found suitable with respect to yield advantage and reduction in runoff and soil loss. The minimum runoff and soil loss were observed under sub soiling at every year followed in sub soiling in alternate year whereas maximum runoff and soil loss were observed in sub soiling in once in three year. Among sub soiling spacing treatments, minimum runoff and soil loss were observed in sub soiling at 1.5 m spacing and sub soiling at 2.0 m spacing whereas maximum runoff and soil loss were observed in subs soiling at 3.0 m spacing.
5

Mohammad Didarul Islam, MD Aminul Islam e M. Ryyan Khan. "Effect of non-uniform soiling on solar panel output and revenue analyzed through controlled experiment". MIST INTERNATIONAL JOURNAL OF SCIENCE AND TECHNOLOGY 10 (29 dicembre 2022): 21–28. http://dx.doi.org/10.47981/j.mijst.10(03)2022.346(21-28).

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Non-uniform soiling drastically decreases the power generation of PV panels. Different events are responsible for the non-uniform soiling on PV panels for example bird droppings, sand storms, or snowfall. In this study, we have achieved multiple-goals for analyzing the effect of non-uniform soiling on a PV module output. We also analyzed the revenue losses due to the non-uniform soiling in a PV power plant. Firstly, for observing the effect of non-uniform soiling an I-V scanner has been designed. Secondly, the designed I-V scanner has been used to observe the changes in the I-V characteristics curve of PV panels due to non-uniform soiling and shading conditions. In this study, we have conducted various controlled experiments by providing different shading conditions on the PV panel and observing the I-V curve changes. A correlation has been done with the various shadowing conditions like the bottom edge soiling condition of PV panels or bird-dropping. In a PV power plant, non-uniform soiling may occur at the edge of PV panels after cleaning intervention. Considering these scenarios, we have done an economic analysis for determining the effect of non-uniform soiling on the revenue of PV power plants. Finally, the relations between the cleaning cycle, performance loss factor, and solar cell area coverage with respect to revenue have been also discussed in this article.
6

Geuder, N., e V. Quaschning. "Soiling of irradiation sensors and methods for soiling correction". Solar Energy 80, n. 11 (novembre 2006): 1402–9. http://dx.doi.org/10.1016/j.solener.2006.06.001.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Partin, John C., Susan K. Hamill, Janet E. Fischel e Jacqueline S. Partin. "Painful Defecation and Fecal Soiling in Children". Pediatrics 89, n. 6 (1 giugno 1992): 1007–9. http://dx.doi.org/10.1542/peds.89.6.1007.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Fecal soiling is a common complaint among school-age children. The fecal soiling is often accompanied by chronic constipation and so-called "idiopathic," "functional," or "psychogenic" megacolon, the cause of which is undetermined. The records of all children presenting to a pediatric gastroenterology clinic between 1981 and 1990 with difficult defecation were reviewed to determine the incidence of painful defecation and its relationship to chronic impaction and fecal soiling. There were 227 children; 74 were younger than 36 months of age and 153 were older than 36 months. Of the younger children, 86% presented with pain, 71% with impaction, and 97% with severe withholding. The younger children had painful defecation for a mean of 14 ± 9 (SD) months before presentation. Of the older children, 85% presented with fecal soiling, 57% with pain, and 73% with fecal impaction, and 96% exhibited withholding the older children had difficult defecation for a mean of 56 ± 42 months before presentation. Sixty-three percent of the children presenting with fecal soiling had a history of painful defecation beginning before 36 months of age. Painful defecation frequently precedes chronic fecal impaction and fecal soiling in American children. Early, effective treatment of painful defecation in infancy might reduce the incidence of chronic fecal impaction and fecal soiling in school-age children.
8

Hirohata, Takuya, Yasuyuki Ota e Kensuke Nishioka. "Effect of Anti-Soiling Coating on Performance of Fresnel Lens for Concentrator Photovoltaic Module". Applied Mechanics and Materials 372 (agosto 2013): 575–78. http://dx.doi.org/10.4028/www.scientific.net/amm.372.575.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
If the optical collector surfaces in concentrator photovoltaic (CPV) systems are soiled, a significant proportion of sunlight is scattered and definitively lost because the scattered rays cannot be focused onto the solar cell. In this study, we studied the influence of soiling on poly-methyl methacrylate (PMMA) substrates with and without super-hydrophilicity anti-soiling layer. After 5 months, the reduction rate of transmittance for the sample without anti-soiling coat was 7.1%. In contrast, that for the sample with anti-soiling coat could be suppressed to 4.2%. Moreover, the relationship between wind speed and accumulation of dust was discussed.
9

Diniz, Antonia Sônia A. C., Tulio P. Duarte, Suellen A. C. Costa, Daniel Sena Braga, Vinicius Camatta Santana e Lawrence L. Kazmerski. "Soiling Spectral and Module Temperature Effects: Comparisons of Competing Operating Parameters for Four Commercial PV Module Technologies". Energies 15, n. 15 (27 luglio 2022): 5415. http://dx.doi.org/10.3390/en15155415.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
The choice of a particular PV technology for best performance is sometimes based upon a single factor or single operating condition. However, many parameters have functionalities that oppose each under actual operating conditions. In this paper, the comparisons of different PV module technologies under moderate environmental conditions (Tropical Climate Zone, Belo Horizonte, Brazil) are explored based upon the two competing parameters of soiling-layer spectral effects and panel operating temperature. Specifically, low-bandgap PV technologies (e.g., Si or Cu(In,Ga)(SSe)2) are reported to have performances less affected by the absorption of incoming sunlight than higher-bandgap absorbers (e.g., a-Si:H or CdTe). However, the opposite is true for operating temperatures, with higher bandgaps having advantages under higher-temperature operating conditions. We present a simple comparative soiling-temperature model with experimental collaborative data to address the following question: What is the controlling parameter of the combination of soiling spectral effects and temperature on lower- and higher-bandgap module technologies? Temperature coefficients are measured for groups of modules for the four technologies having bandgaps ranging from 1.1 to 1.7 eV. Additional optical absorption for the soiling layers in the range of 300 nm to ~600 nm is confirmed by transmission measurements. The data from our soiling monitoring stations indicate that these potential spectral effects are based on consistent differences in soiling ratios and soiling rates. Some differences between the model predications and experimental observations are discussed. This paper reports temperature and soiling regions of “best-of-class” performances for these four commercial PV technologies in this climate region based upon the two competing parameters.
10

Loening-Baucke, Vera. "ENCOPRESIS AND SOILING". Pediatric Clinics of North America 43, n. 1 (febbraio 1996): 279–98. http://dx.doi.org/10.1016/s0031-3955(05)70406-5.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Più fonti
Ti possono interessare anche gli elenchi estesi di opere sul tema "Soilihi":
Articoli di riviste Tesi Libri

Tesi sul tema "Soilihi":

1

Ankili, Houssamoudine. "De la génération indépendantiste à la révolution socialiste d'Ali Soilihi aux Comores : 1958-1978". Electronic Thesis or Diss., Université Paris Cité, 2023. http://www.theses.fr/2023UNIP7168.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Depuis la proclamation de l'indépendance unilatérale des Comores le 6 juillet 1975, par Ahmed Abdallah, l'État comorien n'a cessé de traverser de multiples crises politiques et institutionnelles qui conduisent spécialistes et non-spécialistes à revenir sur ce moment fondateur. Dans l'historiographie comme dans les mémoires collectives, deux figures ont particulièrement incarné deux voies opposées. Celle d'Ahmed Abdallah (1919-1989), « le père de l'indépendance » (mbaba wahindépendasi) apparaît comme le garant de valeurs conservatrices. A l'inverse, Ali Soilihi (1937-1978), issu d'une autre génération, incarne un modèle de changement radical associé aux idéaux révolutionnaires et anti-impérialistes des années 1960 et 1970. Au-delà de cette opposition classique entre conceptions politiques et rapports au monde peu conciliables, la thèse entend revenir de manière inédite sur les conditions d'arrivée au pouvoir Ali Soilihi et d'autres représentants d'une génération marquée par le contexte global de la décolonisation et de la circulation de modèles politiques socialistes venus du Bloc de l'Est comme d'Afrique. A partir de sources nouvelles ou peu connues, elle vise à retracer avec précision l'histoire politique et sociale du régime instauré par Ali Soilihi à la suite d'un coup d'État. Elle montre que la révolution comorienne a d'abord suscité l'enthousiasme parmi les plus jeunes notamment. Néanmoins, les dérives autoritaires du régime et ses difficultés profondes à affronter de multiples défis ont fragilisé ses assises et alimenté une opposition de plus en plus massive
Ever since Ahmed Abdallah made the unilateral declaration of independence of on 6 July 1975, the state of Comoros has experienced multiple political and institutional crises which have led specialists and non-specialists to revisit this foundational moment. In historiography as well as in popular memory, two figures in particular have come to represent two opposed trajectories. On the one hand, the figure of Ahmed Abdallah (1919-1989), the 'father of independence' (mbaba wahindépendasi), serves as the guarantor of conservative values. On the other hand, Ali Soilihi (1937-1978), a man from a different generation, represents a radical model of change associated with the revolutionary and anti-imperialist ideology of the 1960s and 1970s. Moving beyond this classic opposition between irreconcilable political ideas and external relationships, this thesis takes a fresh approach to the circumstances which brought to power Ali Soilihi and other members of a generation who were influenced by both the global context of decolonisation and the circulation of socialist ideas from the Eastern Bloc as well as Africa. Using new or little known sources, it seeks to retrace carefully the political and social history of the regime introduced by Ali Soilihi following a coup d'état. It shows that the Comorian revolution initially aroused enthusiasm, especially among the youth. However, the authoritarian drift of the regime and its profound inability to confront multiple challenges weakened its foundations and fuelled an increasingly strong opposition
2

Mansfield, Trudie A. "The soiling of materials in urban areas". Thesis, Middlesex University, 1989. http://eprints.mdx.ac.uk/10675/.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
This thesis considers the sources of airborne particulate matter and dark smoke in the UK and its implication in the soiling of materials. The role of particulate elemental carbon receives special consideration. Results of emission inventories reveal that diesel emissions are responsible for 60% of dark smoke in urban areas and 25% on a national level. Particulate emissions have been identified as being largely responsible for the soiling of building fabric in urban areas. It is now being increasingly accepted that vehicle exhaust emissions make major contributions to this fabric soiling as well as to the deterioration of atmospheric quality within the urban environment. Field work has been carried out at nine locations within metropolitan London, where a variety of materials was displayed. The materials' reflectance was measured at regular intervals together with pollution and meteorological conditions for alperiod of eighteen months. Soiling rates in the range of -0.02-4.5 yr were recorded. Particulate samples were collected by a variety of methods and soiling rates were measured in a traffic tunnel to assess the rate of sliling in the absence of rainfall. Soiling rates of -0.5-0.8 yr were recorded. Daily soiling rates for sheltered and exposed materials were measured in a third field study. A cost-benefit analysis of the building soiling problem was also undertaken. The costings were achieved by a survey of UK stone cleaning companies to identify their turnover, market characteristics, mode and cleaning frequencies. The benefits were obtained by interviewing typical clients of the stone cleaning companies to ascertain the amount they spent per annum on stone cleaning and the benefits accrued as a result of cleaning
3

Yoon, Young Hun. "Sources of dust and soiling in museums". Thesis, University of East Anglia, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365119.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
4

Buchanan, Ann. "The treatment and management of soiling children". Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252680.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Islam, M. G. "The soiling of carpets and other floor surfaces". Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382155.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
6

Persson, Tobias. "Wind Tunnel Effects on Truck Aerodynamica and Soiling". Thesis, KTH, Mekanik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203972.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Conceição, Ricardo Filipe Carrão da. "Soiling in solar energy conversion technologies: assessment and mitigation". Doctoral thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/25527.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Soiling, the process of particle deposition onto surfaces, has been studied since the 40’s. Initially, it was studied as a physical process, including types of adhesion forces, and later its effect on performance of solar energy conversion technologies was analyzed, such as in photovoltaics and concentrated solar power. This thesis approaches the problem from a cause-effect point of view and how it can be mitigated. Soiling is characterized, mineral and chemically, using a Scanning Electron Microscope. Polycristalline photovoltaic modules deposition rates are retrieved and related to environmental parameters, as well as, to long-range Saharan desert dust transport, a non-local phenomenon. Attention is also given to Spring, where atmospheric pollen concentration enhances soiling. The effect of soiling on the photovoltaic optimum tilt angle, for fixed and multiple angles, is studied along with a simple economic analysis. Cleaning schedules, for a desired system efficiency, are calculated based on annual soiling. Mirror soiling, related to concentrated solar power technologies, is also analyzed. Soiling rates are calculated and interlinked with environmental parameters such as air temperature, relative humidity, particulate mater concentration and vertical wind speed. From a collaboration with the Institut de Recherche en Energie Solaire et Energies Nouvelles, Morocco, an insightful study is made comparing soiling effect between Portugal and Morocco. A passive cleaning method, impregnated anti-soiling coating, is tested. Comparison between coated and uncoated mirrors is done to evaluate its performance and conclude if it stands as a possible tool to reduce water consumption in cleaning solar harvesting technologies; Resumo: Sujidade em Tecnologias de Conversão de Energia Solar: Avaliação e Mitigação A sujidade, o processo de deposição de partículas em superfícies, tem sido estudada desde os anos 40. Inicialmente, começou a ser estudada como um processo fisico, incluindo tipos de forças de adesão, e mais tarde o seu efeito no desempenho de tecnologias de conversão de energia solar, como na tecnologia fotovoltaica e e de concentração. Esta tese aborda este problema de um ponto de vista causa-efeito e como pode ser mitigado. A sujidade é caracterizada, mineral e químicamente, usando um Microscópio Eletrónico de Varrimento. As taxas de deposição em módulos fotovoltaicos policristalinos são calculadas e relacionadas com parametros ambientais, tal como com o transporte de longo alcance de areia do deserto do Sahara, um fenómeno não local. Também é dada atenção à Primavera, onde a concentração de pólen na atmosfera aumenta a sujidade. O efeito da sujidade no ângulo de inclinação fotovoltaico óptimo, para ângulos fixos e múltiplos, é estudado juntamente com analises económicas. Calendários de limpeza, para uma eficiência de sistema desejada, são calculados com base em dados anuais de deposição de particulas. A sujidade em espelhos, relacionada com as tecnologias de energia solar concentrada, é também analisada. As taxas de deposição são calculadas e relacionadas com parâmetros ambientais, tais como temperatura do ar, humidade relativa, concentração de particulas e velocidade vertical do vento. A partir de uma colaboração com o Institut de Recherche en Energie Solaire et Energies Nouvelles, Marrocos, fez-se um estudo esclarecedor, comparando o efeito da sujidade entre Portugal e Marrocos. Um método passivo de limpeza, revestimentos impregnados anti-sujidade, é testado. A comparação entre espelhos revestidos e não revestidos é realizada para avaliar o seu desempenho e concluir se é um método importante para alcançar uma redução no consumo de água na limpeza de tecnologias de energia solar.
8

Saïd-Soilihi, Youssouf. "Une analyse critique du leg [sic] agraire colonial et de l'expérience d'Ali Soilih aux Comores". Montpellier 1, 1986. http://www.theses.fr/1986MON10004.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
Les comores ont herite de la colonisation francaise des desequilibres economiques financiers, commerciaux, alimentaires, sociaux, agro-ecologiques et demographiques. Ali soilih, agronome de formation, et fort d'une experience politico-professionnelle a tente de mettre fin a ces desequilibres. Il s'etait fixe comme objectifs : l'auto-suffisance alimentaire, le plein emploi et le niveau des recettes d'exportation. Il avait engage des reformes institutionnelles, sociales culturelles, politiques et economiques. La persistance des desequilibres, l'absence de ressources humaines et financieres suffisantes, l'exiguite des iles, la brutalite des methodes et la crise internationale ont compromis cette experience de developpement auto-centre. Mais ses enseignements sont tels que de nombreux comoriens souhaitent refaire l'experience avec les lecons du passe.
9

Figgis, Benjamin. "Investigation of PV soiling and condensation in desert environments via outdoor microscopy". Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAD006/document.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
La salissure des modules photovoltaïques (PV) dégrade grandement leurs performances dans les environnements désertiques. Les études précédentes en extérieur ont tendance à trouver de faibles corrélations entre les taux de salissure et les paramètres météorologiques. On pensait que l'une des raisons était le long intervalle de mesure - jours ou semaines - des techniques traditionnelles de mesure des salissures sur le terrain. Dans la présente étude, un «microscope de souillure extérieur» (OSM) a été développé pour mesurer le dépôt et le détachement de particules de poussière individuelles, toutes les 10 minutes, dans des conditions extérieures, de jour comme de nuit. En utilisant une paire d'OSM graissés et non graissés, il était en outre possible de séparer les salissures en trois vitesses de flux de poussière de composants - dépôt, rebondissement immédiat et remise en suspension retardée. Les OSM ont été utilisés pour mesurer les taux de flux dans des expériences sur le terrain à Doha, au Qatar. La nouvelle méthode a révélé des effets explicatifs de paramètres environnementaux qui avaient auparavant été obscurcis par de longs intervalles de mesure des salissures et des taux de flux de poussière confondus. L'OSM pouvait également mesurer l'apparition et la croissance de gouttelettes de condensation microscopiques dans des conditions de terrain et de laboratoire. De telles expériences, ainsi que des mesures isothermes et des analyses de composition, ont démontré que la condensation sur les surfaces sales au terrain d’études était fortement influencée par la présence de matière hygroscopique dans la poussière autre que NaCl. En raison de cette matière, la condensation microscopique peut persister à la surface même si elle est bien supérieure à la température du point de rosée. Les résultats de l'étude suggèrent que la souillure des modules photovoltaïques pourrait être atténuée en tirant parti des variations naturelles des conditions météorologiques au cours de la journée
Soiling of photovoltaic (PV) modules greatly degrades their performance in desert environments. Previous field studies have tended to find weak correlations between the soiling rate and weather parameters. It was thought that one reason was the long measurement interval — days or weeks — of conventional field soiling measurement techniques. In the present study, an “outdoor soiling microscope” (OSM) was developed able to measure deposition and detachment of individual dust particles, every 10 minutes, in outdoor conditions, day and night. By using a greased and ungreased pair of OSMs, it was further possible to separate soiling into three component dust flux rates — deposition, immediate rebound, and delayed resuspension. OSMs were used to measure flux rates in field experiments in Doha, Qatar. The novel method revealed explanatory effects of environmental parameters that had previously been obscured by limits of conventional long soiling measurement intervals and confounded dust flux rates. The OSM could also measure the onset and growth of microscopic condensation droplets in field and laboratory settings. Such experiments, along with isotherm measurements and composition analysis, demonstrated that condensation on soiled surfaces at the test site was strongly influenced by the presence of hygroscopic matter in the dust other than NaCl. Because of such matter, microscopic condensation could persist on both hydrophilic and hydrophobic surfaces well above the dew-point temperature. Results of the study suggest that soiling of PV modules might be mitigated by taking advantage of natural time-of-day variations in weather conditions
10

Hagemeier, Thomas [Verfasser], e Dominique [Akademischer Betreuer] Thevenin. "Experimental and numerical investigation of vehicle soiling processes / Thomas Hagemeier. Betreuer: Dominique Thévenin". Magdeburg : Universitätsbibliothek, 2012. http://d-nb.info/1054135576/34.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Più fonti

Libri sul tema "Soilihi":

1

Said-Soilihi, Youssouf. Ali Soilihi, l'élan brisé: Essai. Paris: L'Harmattan, 2000.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
2

Michel, Lafon. L' éloquence comorienne au secours de la Révolution: Les discours d'Ali Soilihi, 1975-1978. Paris: L'Harmattan, 1995.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
3

Atkinson, Trudi. House-soiling Problems in Domestic Cats. GB: CABI, 2022. http://dx.doi.org/10.1079/9781789246896.0000.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
4

SCF, RILEM Technical Committee 62. Soiling and cleaning of building façades. London: Chapman and Hall, 1988.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Heins, Terry. Beating sneaky poo: Ideas for faecal soiling. Canberra: ACT Health Authority, 1985.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
6

Mansfield, Trudie A. The soiling of materials in urban areas. [London]: [Middlesex Polytechnic], 1989.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Nazaroff, W. W. Protection of works of art from soiling due to airborne particulates. Pasadena, Calif: Environmental Quality Laboratory, California Institute of Technology, 1992.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
8

Galvin, Matthew. Clouds and clocks: A story for children who soil. New York: Magination Press, 1989.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
9

Dominion Experimental Farms and Stations (Canada), a cura di. Soiling crops for dairy farming in the eastern provinces and British Columbia. Ottawa: Dept. of Agriculture, 1997.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
10

Herridge, D. Anti-soiling coatings for float glass by polymerization and sol-gel techniques. Manchester: UMIST, 1993.

Cerca il testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Più fonti

Capitoli di libri sul tema "Soilihi":

1

Gooch, Jan W. "Soiling". In Encyclopedic Dictionary of Polymers, 676. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_10853.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
2

Watt, John, Ron Hamilton, Roger-Alexandre Lefèvre e Anda Ionescu. "Soiling". In The Effects of Air Pollution on Cultural Heritage, 105–26. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-84893-8_4.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
3

Kesselring, Paul, e Clifford S. Selvage. "Soiling". In The IEA/SSPS Solar Thermal Power Plants, 143–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82682-5_5.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
4

Dawson, R. L. "Soiling (Encopresis)". In Teacher Information Pack 4: Physical, 181–92. London: Macmillan Education UK, 1985. http://dx.doi.org/10.1007/978-1-349-09003-7_20.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Roorda, Gerrit. "Soiling/fecale incontinentie". In Kleine Kwalen en alledaagse klachten bij ouderen, 260–64. Houten: Bohn Stafleu van Loghum, 2020. http://dx.doi.org/10.1007/978-90-368-2549-8_46.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
6

Bracewell, Melissa. "Constipation and Soiling". In Child and Adolescent Mental Health, 127–31. 3a ed. Third edition. | New York, NY: Routledge, 2021.: CRC Press, 2021. http://dx.doi.org/10.4324/9781003083139-19.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Shepard, Jaclyn A., e Alex C. Nyquist. "Constipation and soiling". In Pediatric Psychogastroenterology, 228–36. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003308683-21.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
8

Kapalu, Christina Low, e John M. Rosen. "Constipation and soiling". In Pediatric Psychogastroenterology, 219–27. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003308683-20.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
9

Cuddihy, Edward F. "Soiling Mechanisms and Performance of Anti-Soiling Surface Coatings". In Particles on Surfaces 1, 91–111. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-9531-1_8.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
10

Mills, Daniel, Maya Braem Dube e Helen Zulch. "Feline House-Soiling Problems". In Stress and Pheromonatherapy in Small Animal Clinical Behaviour, 149–69. West Sussex, UK: John Wiley & Sons, Ltd.,, 2013. http://dx.doi.org/10.1002/9781118702642.ch7.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "Soilihi":

1

Banchik, Leonardo D., Aaron Sahm, Robert Boehm e Kenneth W. Stone. "Fresnel Lens Soiling Characterization and Effect Upon Performance". In ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/es2009-90321.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
The Amonix system is a high concentration PV system that utilizes acrylic Fresnel lenses to focus the sun’s rays onto dispersed PV cells. The Fresnel lenses become soiled with dust over time which decreases power performance. Because of the effect soiling has upon the system performance, Amonix and the University of Nevada, Las Vegas (UNLV) have defined a long term soiling investigation and cleaning methodology. The test and measurement procedure for determining Fresnel lens soiling rate characterization is discussed. Lens soiling rate data is presented for different sites that show the soiling rate is a direct function of the angle of the lens. This paper also discusses the test and measurement procedure of the first phase of an on-going Fresnel lens cleaning investigation. An assessment of the soiling rate upon power production is also presented.
2

Peterson, Josh, Julie Chard e Justin Robinson. "Extraction of Prevailing Soiling Rates from Soiling Measurement Data". In 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC). IEEE, 2022. http://dx.doi.org/10.1109/pvsc48317.2022.9938838.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
3

Gostein, Michael, Stan Faullin, Keith Miller, Jason Schneider e Bill Stueve. "Mars Soiling Sensor™". In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC). IEEE, 2018. http://dx.doi.org/10.1109/pvsc.2018.8547767.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
4

Gostein, Michael, Tim Duster e Christopher Thuman. "Accurately measuring PV soiling losses with soiling station employing module power measurements". In 2015 IEEE 42nd Photovoltaic Specialists Conference (PVSC). IEEE, 2015. http://dx.doi.org/10.1109/pvsc.2015.7355993.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Gostein, Michael, Bill Stueve, Brenor Brophy, Kichang Jung, Alfredo Martinez-Morales, Shu Zhang, Yeyi Jin e Jianmei Xu. "Soiling measurement station to evaluate anti-soiling properties of PV module coatings". In 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC). IEEE, 2016. http://dx.doi.org/10.1109/pvsc.2016.7750242.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
6

Kagan, Seth, Eric Giosa, Robert Flottemesch, Rob Andrews, James Rand, Mason Reed, Michael Gostein e Bill Stueve. "Impact of Non-Uniform Soiling on PV System Performance and Soiling Measurement". In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC). IEEE, 2018. http://dx.doi.org/10.1109/pvsc.2018.8547728.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Kam-Lum, Elsa, Bennet E. Meyers, Damien Cosme, Brahim Aissa e Giovanni Scabbia. "Soiling Rate Determination from Referenced Systems in Desert Climate using PVInsight Soiling Algorithm". In 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC). IEEE, 2021. http://dx.doi.org/10.1109/pvsc43889.2021.9518459.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
8

Gostein, Michael, Bill Stueve e Mandy Chan. "Accurately Measuring PV Soiling Losses with Soiling Station Employing PV Module Power Measurements". In 2017 IEEE 44th Photovoltaic Specialists Conference (PVSC). IEEE, 2017. http://dx.doi.org/10.1109/pvsc.2017.8366169.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
9

Makam, Sri Lalith Madhav, Srishty Shah, Rixson Varghese e Rajat Walia. "Modelling of Airflow-Snow Interaction on Metal Surfaces Using FVM and SPH-Based Solvers on a Wedge Geometry". In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2024. http://dx.doi.org/10.4271/2024-01-1969.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Abstract (sommario):
<div class="section abstract"><div class="htmlview paragraph">The potential blinding of Advanced Driver Assistance Systems (ADAS) sensors due to contamination poses a notable threat to autonomous vehicles. These sensors' performance can be compromised by diverse sources such as dust, water, or snow. However, our investigation concentrates primarily on snow-related contamination, a frequent occurrence during winter. The accumulation of snow and ice significantly hampers the operational efficacy of autonomous vehicles. Over the years, a series of field tests and wind tunnel experiments have been conducted to analyze the mechanisms of snow interaction and soiling patterns on vehicles and bluff bodies. Notably distinctive patterns of soiling have been identified across multiple areas of these structures. The central challenge revolves around constructing an accurate model to predict snow buildup on vehicles. The precision in capturing the airflow dynamics, which substantially influences how the snow interacts with the specific body, is crucial for forecasting the resulting soiling patterns. This project's objective is to establish a digital simulation approach for depicting interactions between air, snow, and metal surfaces. This methodology is substantiated by comparisons with established wind tunnel findings.</div><div class="htmlview paragraph">The study utilizes simplified bluff bodies, specifically employing a Wedge geometry, to minimize unexpected errors. For aerodynamic simulations, STAR-CCM+ featuring the Detached Eddy Simulation (DES) turbulence model was adopted. This effectively captures transient aerodynamics, particularly in the wake region, which has been identified as a critical aspect influencing soiling patterns. The Smooth Particle Hydrodynamics (SPH) based tool, PreonLab, was employed to simulate snow particle accumulation. An extensive parametric analysis within the PreonLab snow solver was conducted, exploring its competency in simulating snow particles and their interactions with airflow and bluff bodies. A comprehensive framework for simulating snow accumulation was formulated, encompassing snow properties, drag models, adhesion, and roughness of surface. The simulation outputs demonstrate good alignment with the outcomes of wind tunnel tests.</div></div>
10

N, Ramprasad, Srinivas Naidu e Aravamudhan. "Soiling Loss Estimation Methodology (MoCE)". In 2020 IEEE 47th Photovoltaic Specialists Conference (PVSC). IEEE, 2020. http://dx.doi.org/10.1109/pvsc45281.2020.9300936.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri

Rapporti di organizzazioni sul tema "Soilihi":

1

Simpson, Lin. Addressing Soiling: From Interface Chemistry to Practicality. Office of Scientific and Technical Information (OSTI), marzo 2020. http://dx.doi.org/10.2172/1659855.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
2

Kidney, K. Solar reflector soiling pattern distributions and reflectance measurement requirements. Office of Scientific and Technical Information (OSTI), ottobre 1990. http://dx.doi.org/10.2172/6300480.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
3

Burton, Patrick D., e Bruce Hardison King. A Handbook on Artificial Soils for Indoor Photovoltaic Soiling Tests. Office of Scientific and Technical Information (OSTI), ottobre 2014. http://dx.doi.org/10.2172/1322292.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
4

Micheli, Leonardo, Matthew T. Muller, Michael G. Deceglie e Daniel Ruth. Time Series Analysis of Photovoltaic Soiling Station Data: Version 1.0, August 2017. Office of Scientific and Technical Information (OSTI), settembre 2017. http://dx.doi.org/10.2172/1390775.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Simpson, Lin. Conduct Performance Validation of the Electrodynamic Shield (EDS) Induced Cleaning Under Realistic Environmental Soiling Conditions: Cooperative Research and Development Final Report, CRADA Number CRD-21-17861. Office of Scientific and Technical Information (OSTI), settembre 2022. http://dx.doi.org/10.2172/1889869.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri

Vai alla bibliografia