Relevant bibliographies by topics / NATURAL SUNLIGHT

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'NATURAL SUNLIGHT'

Author: Grafiati
Published: 11 September 2023

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Journal articles on the topic "NATURAL SUNLIGHT"

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Vire, Gordon, L. Jackson Roberts, and Lloyd E. King. "Urticaria pigmentosa and natural sunlight." Journal of the American Academy of Dermatology 14, no. 4 (April 1986): 687–88. http://dx.doi.org/10.1016/s0190-9622(86)80468-6.

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Bennett, Brad. "Natural Sunlight on Kongde Ri." Wilderness & Environmental Medicine 31, no. 4 (December 2020): 523. http://dx.doi.org/10.1016/j.wem.2020.07.004.

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Liu, Ru, Hanwen Zhu, Kang Li, and Zhong Yang. "Comparison on the Aging of Woods Exposed to Natural Sunlight and Artificial Xenon Light." Polymers 11, no. 4 (April 18, 2019): 709. http://dx.doi.org/10.3390/polym11040709.

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To investigate the relationship between sunlight and artificial light sources on the weathering of wood, three woods, namely, Tectona grandis L.F. (teak), Stereospermum colais (mabberley), and Dicorynia guianensis (basralocus), were tested under natural sunlight for 733 days and artificial xenon light for 180 h, respectively. A comparison between sunlight and artificial xenon light was made based on surface color changes at various intervals. The results showed that the woods suffered from more severe aging in the artificial xenon light exposure than that in the natural sunlight exposure. At the early stage of exposure, very good relationships were found between 70 days under natural sunlight weathering and 60 h under artificial xenon light weathering. Compared with natural sunlight, about a 30 times faster aging process was identified in the artificial xenon light. However, the linear relationship vanished at the later aging stage. It was found that the color change fluctuated in natural sunlight, while it increased steadily in artificial xenon light. The wood species affected the aging of woods. In natural sunlight exposure, the color change decreased in the order of mabberley > teak > basralocus, while in artificial xenon light exposure, color change decreased in the order of mabberley > basralocus > teak due to the easier volatilization of extractives in artificial xenon light than in natural sunlight.
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Sampedro, Diego. "Natural and Artificial Photoprotective Agents." Molecules 26, no. 4 (February 23, 2021): 1189. http://dx.doi.org/10.3390/molecules26041189.

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Jørgensen, Niels O. G., Raju Podduturi, Charlotte Frydenlund Michelsen, Thea Jepsen, and Munique de Almeida Bispo Moraes. "Fate of Saxitoxins in Lake Water: Preliminary Testing of Degradation by Microbes and Sunlight." Water 14, no. 21 (November 5, 2022): 3556. http://dx.doi.org/10.3390/w14213556.

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The cyanobacterial toxin saxitoxin (STX) is mainly associated with the blooms of marine dinoflagellates, but it is also produced by several species of freshwater cyanobacteria. So far, the degradation of STX has only been demonstrated by physicochemical treatments, but in this study, we demonstrated that natural factors, such as bacterioplankton and sunlight, had the capacity for degrading STX in the eutrophic Lake Arresø, Denmark. Natural lake bacterioplankton could reduce STX concentrations by 41–59%. A similar reduction was shown for four saxitoxin analogs. The exposure of the lake water to natural sunlight or simulated sunlight also reduced both intracellular and extracellular, dissolved STX. During 4–8 h exposure, natural sunlight reduced intracellular STX by 38–52% but increased extracellular, dissolved STX by 7–29%. Corresponding values for simulated sunlight were a reduction in intracellular STX by 16–45% and increased levels of extracellular STX by 10–33%. In particle-free lake water, the two types of sunlight reduced ambient, dissolved STX by 13–17%. The light exposure was observed to damage >94% of the sxtA gene involved in STX synthesis. This study demonstrated that lake water bacterioplankton and sunlight can modify STX by degradation and cell destruction, and that the biosynthesis of STX may be inhibited by exposure to sunlight.
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Kuhn, Ramona, Robert Jensch, Thomas Fischer, Klaus Keuler, Isaac Mbir Bryant, and Marion Martienssen. "Sunlight Degradation of the Aminophosphonate Diethylenetriamine Penta-(Methylenephosphonic Acid)." Solar 2, no. 2 (April 1, 2022): 141–57. http://dx.doi.org/10.3390/solar2020009.

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Aminophosphonate diethylenetriamine penta(methylenephosphonic acid) (DTPMP) is a scale inhibitor commonly used in several industries. DTPMP is suspected to cause anthropogenic pollution through discharge into the aquatic environment. DTPMP is assumed to be degraded by sunlight radiation. We recently predicted a preliminary degradation pathway of DTPMP applying UV treatment. Currently, we have not yet evidenced that DTPMP shows the same degradation pattern with natural sunlight. One major reason leads to the fact that the light spectrum emitted by UV lamps does not completely represent the natural sunlight spectrum, and the emitted UVB and UVA irradiation flux is much higher than for solar light. For that reason, the degradation pattern and kinetics might be different between artificial UV treatment and natural sunlight treatment. Here, we investigated whether DTPMP is degradable under natural sunlight radiation, and whether the degradation mechanisms determined through UV treatment are transferable to sunlight. We investigated five different treatment conditions, i.e., DTPMP degradation in direct or diffuse sunlight, in diffuse sunlight with addition of Ca2+ or Mg2+, and in diffuse sunlight with local TW. Our experiment was carried out from March 2021 to October 2021. We performed LC/MS analyses and measured the release of o-PO43−. DTPMP was degraded with all five treatment conditions. The fastest DTPMP degradation occurred in direct and diffuse sunlight without addition of bivalent cations. The addition of Ca2+ and Mg2+ resulted in inhibited degradation. Similar effects occurred for sunlight treatment with local TW. We evidenced different degradation mechanisms for DTPMP depending on the presence of alkaline earth metals as we previously proposed for UV-treated DTPMP. However, both degradation mechanisms of DTPMP belong to the same degradation pathway determined with UV treatment. Therefore, we conclude that DTPMP undergoes a similar degradation pathway in sunlight as compared to UV light.
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Ok, Junghun, Hirozumi Watanabe, Junglai Cho, Nanhee An, and Byungmo Lee. "Photodegradation of Butachlor and Pyrazosulfuron-ethyl in Rice Paddy Water under Natural Sunlight." Korean Journal of Environmental Agriculture 33, no. 2 (June 30, 2014): 134–37. http://dx.doi.org/10.5338/kjea.2014.33.2.134.

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Alonso-S�ez, Laura, Josep M. Gasol, Thomas Lefort, Julia Hofer, and Ruben Sommaruga. "Effect of Natural Sunlight on Bacterial Activity and Differential Sensitivity of Natural Bacterioplankton Groups in Northwestern Mediterranean Coastal Waters." Applied and Environmental Microbiology 72, no. 9 (September 2006): 5806–13. http://dx.doi.org/10.1128/aem.00597-06.

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ABSTRACT We studied the effects of natural sunlight on heterotrophic marine bacterioplankton in short-term experiments. We used a single-cell level approach involving flow cytometry combined with physiological probes and microautoradiography to determine sunlight effects on the activity and integrity of the cells. After 4 h of sunlight exposure, most bacterial cells maintained membrane integrity and viability as assessed by the simultaneous staining with propidium iodide and SYBR green I. In contrast, a significant inhibition of heterotrophic bacterial activity was detected, measured by 5-cyano-2,3 ditolyl tetrazolium chloride reduction and leucine incorporation. We applied microautoradiography combined with catalyzed reporter deposition-fluorescence in situ hybridization to test the sensitivity of the different bacterial groups naturally occurring in the Northwestern Mediterranean to sunlight. Members of the Gammaproteobacteria and Bacteroidetes groups appeared to be highly resistant to solar radiation, with small changes in activity after exposure. On the contrary, Alphaproteobacteria bacteria were more sensitive to radiation as measured by the cell-specific incorporation of labeled amino acids, leucine, and ATP. Within Alphaproteobacteria, bacteria belonging to the Roseobacter group showed higher resistance than members of the SAR11 cluster. The activity of Roseobacter was stimulated by exposure to photosynthetic available radiation compared to the dark treatment. Our results suggest that UV radiation can significantly affect the in situ single-cell activity of bacterioplankton and that naturally dominating phylogenetic bacterial groups have different sensitivity to natural levels of incident solar radiation.
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Cheshire, Thomas P., and Frances A. Houle. "Ruthenium Dye Excitations and Relaxations in Natural Sunlight." Journal of Physical Chemistry A 125, no. 20 (May 18, 2021): 4365–72. http://dx.doi.org/10.1021/acs.jpca.1c02386.

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Konovalov, Igor, and Niladri Bhattacharjee. "Thermal noise of hot carriers under natural sunlight." Solar Energy 234 (March 2022): 387–91. http://dx.doi.org/10.1016/j.solener.2022.01.031.

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Dissertations / Theses on the topic "NATURAL SUNLIGHT"

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Opitz, Christoph. "Natural Rhythms and Temporal Perception - Visualization of Sunlight Patterns with Energy Monitoring." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/82556.

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In his book Ritual House, Ralph Knowles states, "The houses we inhabit, the cities surrounding our houses, even the clothes we wear - all are shelters we erect against the elements. But they are also manifestations of ancient rituals, developed in response to nature's rhythms" (2006). Implicit within this quote is the importance of nature's rhythms in our lives, particularly those related to the movement of the sun. Many built environments have no connection to the exterior. Those who work in these spaces are disconnected from these natural rhythms and often experience detrimental physiological effects. However, technology has the potential to reintroduce aspects of natural rhythms into built environments. This research crossed disciplinary boundaries separating architecture, engineering, psychology, and building science during the design of an architectural intervention for an interior workspace known as the Sandbox, at Virginia Tech. The design proposal includes skylights that combine Photovoltaic-integrated glazing with LED lighting to create conditions that stimulate the occupants while connecting inside to out. To reestablish a connection to natural rhythms the BIPV energy monitoring is used during the day to record variations in solar radiation which at night are played back through intensity and color variations of LED lighting. The effect of the LED lighting was compared with the sunlight entering through the skylights using quantitative analysis methods and qualitative visual comparison tools including time lapse photos and videos. The research merges architectural design, lighting technology and BIPV to demonstrate a proof-of-concept for the reintroduction of natural rhythms into built environments.
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Rihl, Luiz Fernando. "Daylight and visual perception : an investigation of retrofitted building elements for the enhancement of daylight and the modelling of objects with reference to the Brazilian context." Thesis, Open University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284378.

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Davies, Cheryl Margaret. "The effect of sunlight and other factors on the survival of starved enteric bacteria in natural waters." Thesis, University of Newcastle Upon Tyne, 1989. http://hdl.handle.net/10443/423.

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Results are reported from a series of experiments to determine the effects of certain environmental factors, namely, sunlight, temperature and , salinity on the survival of selected enteric bacteria which are of public health importance either as indicators of faecal pollution or The survival of the as pathogens. starved organisms in seawater and in freshwater microcosms exposed to artificial and natural sunlight, and in the dark, at a range of temperatures was investigated. An acridine orange direct viable count (AODVC) using an epifluorescent microscope was employed in addition to selective and non-selective cultural methods for estimation of decay rates of the test bacteria. The use of the AODVC allowed enumeration of those bacteria which respond to the stresses of the natural environment by entering into a viable but non-culturable form. These otherwise would not be detected, as they are, by definition, non-culturable using traditional enumeration techniques based upon the production of visible signs of growth. Two strategies were employed by the organisms in response to the unfavourable conditions. Prior growth of those members of the Enterobacteriaceae in a nutrient-poor medium before inoculation into the microcosms allowed adaptation of the cells to low nutrient concentrations, thus extending survival and resulting in higher resistance to other stresses such as visible light. This extension was, however, only temporary, the ultimate fate of the bacteria being death. Enterococci were particularly sensitive to low nutrient concentrations and died very rapidly in the light. All bacteria tested were able to adopt the viable but non-culturable strategy in the dark as a temporary measure, though it was only a matter of time before viability as well as culturability was also lost. This included enterococci, for which an AODVC using the antibiotic ciprofloxacin was developed by modifying the original nalidixic acid method. Responses of bacteria in the dark were influenced by temperature. Bright natural sunlight produced rapid death in bacteria exposed in seawater microcosms, a result of the synergistic interaction of salinity, UV light and possibly temperature too, whereas the presence of humic acids in freshwater afforded some protection to the cells by absorbing the damaging UV component of sunlight. Low intensities of UV and visible light typical of those found below the surface of water may induce bacteria to evolve towards a viable but non-culturable form.
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Cheng, Long, and Long Cheng. "Effectiveness of Engineered and Natural Wastewater Treatment Processes for the Removal of Trace Organics in Water Reuse." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/624475.

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Due to their potential health impact on human beings and ecosystems, persistent trace organic compounds (TOrCs) have aroused concern from both the public and professionals. In particular, the discharge of pharmaceuticals, endocrine disrupters, disinfection byproducts and other TOrCs from wastewater treatment plants into the environment is an area of extensive current research. This work studies the fate and treatments of TOrCs, with emphases on advanced oxidation processes (AOPs). This work presents predicted removal efficiencies of a variety of engineered and natural processes for 55 frequently encountered TOrCs in treated wastewater, based on previously reported data and using existing predictive models. Correlations between physicochemical and biological properties of TOrCs and treatment performance were explored. Removal of TOrCs in all processes investigated in this study was found to be sensitive to matrix effects. Heuristic guidelines for selection of sequenced treatment processes for TOrCs management were established. A field reconnaissance of natural process of TOrCs was conducted by analyzing the occurrence and fate of a suite of TOrCs, as well as estrogenic activity in water and sediments in the Santa Cruz River, an effluent-dependent stream in Tucson, Arizona. Some TOrCs, including contributors to estrogenic activity, were rapidly attenuated with distance of travel in the river. TOrCs that have low biodegradability and low octanolwater partitioning coefficients were less removed. Results of independent experiments indicated potential indirect photodegradation of estrogenic compound by reactive species generated from photolysis of effluent organic matter. Utilizing advanced oxidation processes (AOPs) as tertiary water and wastewater treatment is an option to prevent discharge of TOrCs into the environment. Compared to conventional AOPs, the ability of generating hydroxyl radicals (•OH) without additional doses of hydrogen peroxide (H2O2) or ozone makes ultraviolet (UV) photolysis of ferric hydroxo complexes a novel AOP, especially in acidic environments. A Fe(III)/UV254 kinetic model, which combines Fenton-like mechanism, and photolyses of Fe3+, FeOH2+ and H2O2 was proposed and experimentally validated to predict Fenton-like and H2O2 direct UV254 photolysis scenarios, individually. Nevertheless, the model underestimated the ferrous ion development during Fe(III)/UV254 photolysis, perhaps due to the overprediction of the oxidation of Fe2+ by •OH. The UV/H2O2 AOP was also studied in this work. A predictive kinetic model was developed to evaluate process efficiency of oxidation of p-cresol by UV/H2O2 photolysis based on a complete reaction mechanism, including reactions of intermediates with •OH. Results of this study highlight the significance of consideration of radical scavenging effects by the byproducts from oxidation of organic matter in model prediction performance.
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Mwanza, Patrick. "Determination of the effects of sunlight and UV irradiation on the structure, viability and reapplication frequency of the biopesticide cryptophlebia leucotreta granulovirus in the protection against false codling moth infestation of citrus crops." Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/6346.

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Cryptophlebia leucotreta granulovirus (CrleGV-SA) is a baculovirus specifically pathogenic to the citrus pest false codling moth, Thaumatotibia leucotreta. CrleGV- SA is formulated as a commercial biopesticide, Cryptogran® (River Bioscience, South Africa). The virus has a stable, proteinaceous crystalline occlusion body (OB) that protects the nucleocapsid. The major limitation to the use of baculoviruses is their susceptibility to the ultraviolet (UV) component of sunlight, which rapidly and greatly reduces their efficacy as biopesticides. The UVA and UVB components are the most destructive to biological organisms. To date no publication has reported the effect of UV on the structure and virulence of CrleGV, or the effectiveness of the OB as a UV protectant. In this study the effect of UV irradiation on the structure and infectivity of pure CrleGV-SA and Cryptogran® was investigated using scanning electron microscopy (SEM), Raman spectroscopy, qPCR, and bioassays. The project included laboratory and field studies. In the laboratory, CrleGV-SA and Cryptogran® were exposed to either UVA or UVB for periods of 24 hours to 7 days before analysis. In the field, Cryptogran® was applied to trees in a citrus orchard with young fruit. The fruit were collected from 24 hours to 28 days after application and bioassays conducted to assess the effect of sunlight over time on virus structure and efficacy when applied to the northern or southern sides of the trees. No surface morphological changes to the virus were detected using SEM. However, small compositional changes were detected by Raman spectroscopy. qPCR and bioassays demonstrated that UV irradiation damaged the viral DNA, greatly reducing the infectivity of pure CrleGV-SA and Cryptogran®. Exposure to UVB reduced the virulence of the virus more than UVA. The field studies revealed that the activity of CrleGV-SA decreased more on the northern side of the trees than on the southern side.
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Carvalho, Marlise Lila Silva. "Eficiência da luz solar refletida e desempenho de dispositivos de sombreamento: estudo para salas de aula na cidade de Maceió." Universidade Federal de Alagoas, 2018. http://www.repositorio.ufal.br/handle/riufal/3522.

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A humid subtropical climate is characterized by a predominant partly cloudy sky, which increases the intensity of solar radiation, and makes shade an essential requeriment. Thus, the indoor daylighting environment may depend more on reflected light than on direct light. Planning the shape of the surfaces is an important means of making full use of the reflected sunlight. In this regard, shading devices can be designed that just obstruct the view of the sky enough to provide shade, by reflecting the sunlight for the environment, and reducing this loss. The aim of this doctoral research is to study the performance of shading devices in classrooms with regard to their luminous power when capturing reflected sunlight in Maceió, so as to determine the potential use of sunlight in these elements. Three variables of these devices were defined for this: the number of pieces, specularity and reflectance of the surfaces devices. The resulting models from the combination of these variables were analyzed to calculate the reflected sunlight efficiency, rate employed in this research. The software used for the computational simulations of these models was TropLux. Statistical analyses were conducted to determine which variables had the greatest impact on the reflected sunlight efficiency and to relate the rate to the daylighting performance through indicators of availability, distribution and the maintenance of illuminance inside the environment: these included the annual average illuminance and uniformity rate, and spatial daylight autonomy. The results showed that the reflectance of the devices is the variable that has the most positive influence on the reflected sunlight efficiency, and is able to increase the rate by up to 142%. The annual average illuminance and the spatial daylight autonomy were positively related to the efficiency and the defined parameterization also led to an increase of their values. With regard to the distribution of illuminances, the variations of the analyzed parameters resulted in a reduction of the uniformity rate in most of the cases studied. The increase in specularity and specular reflectance in the models facing east reduced the rate by up to 34% and 41%, respectively. Increasing the number of components in the system devices installed in lateral openings, only provides a valid solution for the increase of the illumination when these elements have a high reflectance, especially specular. This represents a more efficient strategy in the case of the north facade. Among the analyzed models, in the systems with the largest number of components, and where the surface finishing process provides specular reflection, there is a greater use of sunlight in the reflected form. The use of light colors, such as white, beige and yellow, also benefit the use of sunlight, especially if they are used in materials with specular reflection. In contrast, the high reflectances resulted in a reduction of the uniformity of illumination in the environment. From the results of the studies carried out into reflected sunlight efficiency, it can be stated that it is possible to increase the use of sunlight through the variation of certain shading devices and, hence, to bring benefits by making daylighting available in the environment.
O clima quente e úmido caracteriza-se pelo predomínio do céu parcialmente nublado, o que torna intensa a radiação solar, impondo a necessidade de sombreamento. Assim, a iluminação natural no interior do ambiente pode depender mais da luz refletida do que da luz natural direta. Planejar a forma das superfícies é um importante recurso para o aproveitamento da luz solar refletida. Neste sentido, dispositivos de sombreamento podem ser projetados para obstruir a visão do céu apenas o necessário para o sombreamento, refletindo a luz solar para o ambiente e minimizando essa perda. O objetivo geral desta pesquisa de doutorado é estudar o desempenho de dispositivos de sombreamento em salas de aula com relação à eficiência luminosa na captação da luz solar refletida, em Maceió, a fim de que seja identificado o potencial de aproveitamento da luz solar desses elementos. Para isso foram definidas três variáveis desses dispositivos: número de peças, especularidade e refletância das superfícies dos brises. Os modelos resultantes da combinação dessas variáveis foram analisados quanto à eficiência da luz solar refletida, índice proposto nesta pesquisa. O programa utilizado para as simulações computacionais desses modelos foi o TropLux. Análises estatísticas foram desenvolvidas a fim de identificar as variáveis de maior impacto para a eficiência da luz solar refletida e relacionar o índice ao desempenho da iluminação, através de indicadores de disponibilidade, distribuição e manutenção da iluminância no ambiente: iluminância média anual, uniformidade média anual e autonomia de luz natural espacial. Os resultados mostraram que a refletância dos dispositivos é a variável que mais influencia positivamente a eficiência da luz solar refletida, chegando a incrementar em até 142% o índice. A iluminância média anual e a autonomia de luz natural espacial foram relacionados positivamente à eficiência e a parametrização definida também contribuiu para a ampliação dos seus valores. Quanto à distribuição de iluminâncias, a variação dos parâmetros analisados resultou em redução do índice de uniformidade, na maioria dos casos estudados. O aumento da especularidade e da refletância especular em modelos voltados para Leste reduziram o índice em 34% e 41%, respectivamente. Aumentar o número de peças em sistemas de dispositivos inseridos em aberturas laterais apenas corresponde a uma solução válida para o incremento da iluminação quando tais elementos possuem alta refletância, sobretudo especular. Tal medida representa uma estratégia mais eficiente no caso da fachada Norte. Entre os modelos analisados, os sistemas com maior número de peças, cujo acabamento das superfícies proporciona reflexão especular, são capazes de promover maior aproveitamento da luz solar na forma refletida. O uso de cores claras, como branco, creme e amarelo, também favorece o aproveitamento da luz solar, sobretudo se forem empregadas em materiais com reflexão especular. Por outro lado, altas refletâncias resultaram em redução da uniformidade da iluminação no ambiente. A partir dos resultados dos estudos de eficiência da luz solar refletida desenvolvidos, pode-se afirmar que é possível ampliar o aproveitamento da luz solar através da variação de determinadas características de dispositivos de sombreamento e, consequentemente, trazer benefícios para a disponibilidade de iluminação no ambiente.
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Silva, Bruno Filipe Fernandes da. "Effect of sunlight on cadmium containing nanoparticles (quantum dots) toxicity." Dissertação, 2013. https://repositorio-aberto.up.pt/handle/10216/88332.

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Silva, Bruno Filipe Fernandes da. "Effect of sunlight on cadmium containing nanoparticles (quantum dots) toxicity." Master's thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/88332.

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Dalto, Fernanda. "Modified photocatalytic semiconductors for advanced oxidation process applications under sunlight." Doctoral thesis, 2019. https://hdl.handle.net/10216/122299.

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Dalto, Fernanda. "Modified photocatalytic semiconductors for advanced oxidation process applications under sunlight." Tese, 2019. https://hdl.handle.net/10216/122299.

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Books on the topic "NATURAL SUNLIGHT"

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Mejetta, Mirko. Natural home style: Using simple materials, plantings and sunlight. New York: Whitney Library of Design, 1985.

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Nakagawara, Van B. Natural sunlight and its association to aviation accidents: Frequency and prevention. Washington, D.C: Federal Aviation Administration, Office of Aerospace Medicine, 2003.

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The last hours of ancient sunlight: Waking up to personal and global transformation. New York: Three Rivers Press, 1999.

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Hartmann, Thom. The last hours of ancient sunlight: The fate of the world and what we can do before it's too late. New York: Three Rivers Press, 2004.

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Robert, Major, and Porad Francine, eds. Sunlight through rain: A Northwest haiku year. Mercer Island, WA: Vandina Press, 1996.

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O'Rourke, Maureen. Hydrotherapy & Heliotherapy: Natural Healing With Water, Herbs & Sunlight. Educating Hands Inc, 1995.

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Foresman, Scott. Myview Literacy 2020 Leveled Reader Grade 2 : Sunlight: A Natural Resource. Savvas Learning Company, 2018.

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The Last Hours of Ancient Sunlight. Hodder Mobius, 2001.

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Coloring, NaturejCE. Coloring Book and Poster Collection: Nature Sunlight in the Morning at a Natural Forest Path Fantasy. Independently Published, 2019.

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Hartmann, Thom. The Last Hours of Ancient Sunlight: Waking Up to Personal and Global Transformation. Mythical Books, 1998.

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Book chapters on the topic "NATURAL SUNLIGHT"

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Tenzin, Thinley, Shivamurthy Ravindra Yashas, and Harikaranahalli Puttaiah Shivaraju. "Treatment of Textile Industrial Dyes Using Natural Sunlight-Driven Methods." In Sustainable Textiles: Production, Processing, Manufacturing & Chemistry, 37–51. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0987-0_3.

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Zielnik, Allen F. "Spectral Considerations of Natural and Laboratory-Simulated Sunlight for Degradation Studies." In ACS Symposium Series, 113–25. Washington, DC: American Chemical Society, 2005. http://dx.doi.org/10.1021/bk-2005-0906.ch009.

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Cooper, William J., Rod G. Zika, Robert G. Petasne, and Anne M. Fischer. "Sunlight-Induced Photochemistry of Humic Substances in Natural Waters: Major Reactive Species." In Advances in Chemistry, 333–62. Washington, DC: American Chemical Society, 1988. http://dx.doi.org/10.1021/ba-1988-0219.ch022.

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Ullrich, Stephen E. "Mechanisms by Which UV Radiation, a Natural Component of Sunlight, Suppresses the Immune Response." In Environmental Influences on the Immune System, 155–79. Vienna: Springer Vienna, 2016. http://dx.doi.org/10.1007/978-3-7091-1890-0_7.

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Levy, Joseph, and Yoav Sharoni. "The Inside-Out Concept as Complement to the Use of Topical Sunscreen: The Case for Endogenous Skin Photoprotection from Sunlight by Natural Dietary Actives such as Tomato Carotenoids." In Formulating, Packaging, and Marketing of Natural Cosmetic Products, 313–27. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118056806.ch17.

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Krutmann, Jean, Kevin Sondenheimer, Susanne Grether-Beck, and Thomas Haarmann-Stemmann. "Combined, Simultaneous Exposure to Radiation Within and Beyond the UV Spectrum: A Novel Approach to Better Understand Skin Damage by Natural Sunlight." In Environment and Skin, 11–16. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-43102-4_2.

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Sanmartín, Patricia. "New Perspectives Against Biodeterioration Through Public Lighting." In Microorganisms in the Deterioration and Preservation of Cultural Heritage, 155–71. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69411-1_7.

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AbstractThere is currently an increasing trend in urban centres towards the use of public outdoor lighting systems to illuminate historic and architecturally important buildings during evening hours, but for which there is no specific regulatory framework. Considering that the light is a key factor involved in regulating growth and physiological processes in photosynthetic organisms, it seems appropriate to address the effects that artificial light has on the organisms growing on the facades affected by public lighting. In this sense, despite scientific research in the fields of biological colonization of buildings surfaces and light technology has advanced greatly in recent years, the combination of both disciplines aimed at the correct handling of city public lighting remains uncharted territory with huge potential to provide innovative solutions for smart cities. Recent studies have examined how urban monuments are affected by night-time outdoor illumination in combination with natural sunlight and demonstrated that the use of suitable lighting can inhibit the development of biological colonization. In this frame, this chapter will look at ways of contribute to the long-term management of public illumination on monuments and other structures, while reducing negative impacts caused by night lighting.
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Schuh, Angela. "Parameters of Bone Metabolism -in Particular Vitamin D3 Level-in Serum of Patients with Osteoporosis after Treatment with Natural Sunlight (in Highlands, High Mountain Area and on the Sea) after Artificial UVB Radiation." In Biologic Effects of Light 1998, 141–43. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5051-8_25.

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Sharkey, Amanda, and Noel Sharkey. "Sunlight Glinting on Clouds: Deception and Autonomous Weapons Systems." In Advanced Sciences and Technologies for Security Applications, 35–47. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-90221-6_3.

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AbstractThe art of deception has played a significant role in military conflict for centuries and has been discussed extensively. Yet there has been an absence in the literature of any scrutiny of the risks posed by the deception of Autonomous Weapons Systems (AWS). After explaining the nature of AWS, we overview reasons given in their favour and arguments against them. Examples of military deceptive strategies are considered, together with reflections on the nature of deception. The core of the paper is a technical examination of some of the ways that AWS could be deceived and the potential humanitarian consequences. Since AWS have, by definition, an absence of meaningful human control, any deception could remain hidden until too late. We conclude that awareness of the vulnerability of sensing and image processing systems of AWS to deception reinforces and strengthens the case against their development and use.
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Garg, Shikha, Andrew L. Rose, and T. David Waite. "Pathways Contributing to the Formation and Decay of Ferrous Iron in Sunlit Natural Waters." In ACS Symposium Series, 153–76. Washington, DC: American Chemical Society, 2011. http://dx.doi.org/10.1021/bk-2011-1071.ch008.

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Conference papers on the topic "NATURAL SUNLIGHT"

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Faiman, David, V. Melnichak, R. Rabinovici, and A. Razon. "Characterization of WPVS Reference Cells using Natural Sunlight." In 2006 IEEE 4th World Conference on Photovoltaic Energy Conference. IEEE, 2006. http://dx.doi.org/10.1109/wcpec.2006.279395.

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Liu, Haitao, Xinjing Zou, and Yonghui Zhai. "Electrical Performance Measurement of Concentrator Photovoltaic Modules in Natural Sunlight." In 2012 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC). IEEE, 2012. http://dx.doi.org/10.1109/appeec.2012.6307167.

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Zhu, Jiayi Jenny, and Michael S. Schoenoff. "Effects of Natural Sunlight on Fiberglass Reinforced Polymers for Crossarms." In 2018 IEEE Rural Electric Power Conference (REPC). IEEE, 2018. http://dx.doi.org/10.1109/repc.2018.00023.

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Liu, Haitao, Guomin Zhou, and Shuai Zhou. "Performance ratio measurement method of photovoltaic modules under natural sunlight condition." In 2017 29th Chinese Control And Decision Conference (CCDC). IEEE, 2017. http://dx.doi.org/10.1109/ccdc.2017.7978742.

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Yamagishi, Tatsuki, Taiga Abe, Saitou Shugo, Kong Xiangbo, and Takeshi Kumaki. "Verification of plants growth promoting effect using natural sunlight spectrum LED." In 2022 37th International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC). IEEE, 2022. http://dx.doi.org/10.1109/itc-cscc55581.2022.9894860.

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Lu, Jiakang, and Kamin Whitehouse. "SunCast: Fine-grained prediction of natural sunlight levels for improved daylight harvesting." In 2012 ACM/IEEE 11th International Conference on Information Processing in Sensor Networks (IPSN). IEEE, 2012. http://dx.doi.org/10.1109/ipsn.2012.6920939.

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Mrig, L., S. Rummel, and D. Waddington. "Long-term stability performance testing of amorphous silicon modules under natural sunlight." In AIP Conference Proceedings Volume 157. AIP, 1987. http://dx.doi.org/10.1063/1.36513.

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Opitz, Christoph. "Natural Rhythms and Temporal Perception: Visualization of Sunlight Patterns with Energy Monitoring." In American Solar Energy Society National Solar Conference 2017. Freiburg, Germany: International Solar Energy Society, 2017. http://dx.doi.org/10.18086/solar.2017.01.04.

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Do, Kyu Hyung, Tae Hoon Kim, Sung Jin Kim, and Seok Pil Jang. "Study on a Cooling System for a Concentrating Photovoltaic Module." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22412.

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A concentrating photovoltaic (CPV) module, which mainly consists of optical concentrator or collector, solar cell, cooling system, can produce electricity from sunlight at a lower cost than conventional photovoltaic system by the replacement of expensive photovoltaic area with less expensive concentrating mirrors or lenses. However, concentration of sunlight onto photovoltaic cells causes the cell temperature to rise unless the heat is efficiently dissipated to the environment. Therefore, a cooling system is an essential part to prevent both short-term and long-term degradation of the CPV module. In this paper, a cooling system which consists of a heat spreader and a natural convective heat sink is proposed. Based on the previous studies, the heat spreader and the natural convective heat sink are designed. Experimentally, the thermal performance of the proposed cooling system is evaluated. Also, the effect of an inclined angle on the thermal performance of the natural convective heat sink is investigated. Finally, the proposed cooling system satisfies design constraints for well operating the CPV module for energy harvesting.
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Paghasian, Karen, and GovindaSamy TamizhMani. "Photovoltaic module power rating per IEC 61853–1: A study under natural sunlight." In 2011 37th IEEE Photovoltaic Specialists Conference (PVSC). IEEE, 2011. http://dx.doi.org/10.1109/pvsc.2011.6186418.

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Reports on the topic "NATURAL SUNLIGHT"

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Pushkar, Yulia. Validations of Time-Resolved X-Ray Emissions Spectroscopy for Analysis of Mn-Based Natural and Artifical Sunlight-to-Energy Assemblies. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1169448.

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Moores, Lee, Stacy Jones, Garrett George, David Henderson, and Timothy Schutt. Photo degradation kinetics of insensitive munitions constituents nitroguanidine, nitrotriazolone, and dinitroanisole in natural waters. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41900.

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Herein the matrix effects on the kinetics of aqueous photolysis for the individual munitions constituents of IMX-101: nitroguanidine (NQ), dinitroanisole (DNAN), and nitrotriazolone (NTO) are reported along with the environmentally relevant kinetics and quantum yields. Photolysis potentially represents a major degradation pathway for these munitions in the environment and further understanding the complex matrices effects on photolytic kinetics was needed. Aqueous systems are of particular interest due to the high solubility of NQ (3,800 ppm) and NTO (16,642 ppm) compared to the traditional munitions trinitrotoluene (TNT, 100.5 ppm) and 1,3,5-trinitro-1,3,5-triazine (RDX, 59.9 ppm). Environmental half-lives (and quantum yields) were found to be 0.44 days, 0.83 days, and 4.4 days for NQ, DNAN, and NTO, respectively, under natural sunlight. In laboratory experiments using nominally 300 nm bulbs in a merry-go-round style reactor in DI water the relative rate of photolysis for the three munitions constituents followed the same order NQ > DNAN > NTO, where DNAN and NTO reacted 57 and 115 times more slowly, respectively, than NQ. In the various environmentally relevant matrices tested in the laboratory experiments NQ was not significantly affected, DNAN showed a faster degradation with increasing ionic strength, and NTO showed a modest salinity and pH dependence on its rate of photolysis.
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Drayton, Paul, Jeffrey Panek, Tom McGrath, and James McCarthy. PR-312-12206-R01 FTIR Formaldehyde Measurement at Turbine NESHAP and Ambient Levels. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), July 2016. http://dx.doi.org/10.55274/r0011014.

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Since formaldehyde is ubiquitous (e.g., naturally formed through atmospheric chemistry even if not directly emitted), there is also the potential that atmospheric levels and atmospheric chemistry are not adequately understood.� That avenue of investigation may provide important information that could be important in assessing formaldehyde health risk, source contribution, and ultimately regulatory criteria for gas-fired combustion sources.� In 2002 and 2003, the pipeline industry conducted turbine formaldehyde testing using refined FTIR methods and a dedicated measurement system, which indicated exhaust formaldehyde below 100 ppb and near the method detection limit.� Anecdotal data from that test program showed ambient levels similar to turbine exhaust in some cases.� For example, during the industry test program, a serendipitous finding observed that ambient formaldehyde concentrations varied and were independent of turbine operation.� Instead, naturally occurring emissions from an adjacent corn field appeared to spike the ambient concentration to levels higher than formaldehyde exhaust levels, depending on whether there was direct sunlight or shading from a cloud (i.e., due to �naturally occurring� formaldehyde from vegetation and/or other organics and ambient photochemistry that forms formaldehyde).� Evidence of �high� ambient formaldehyde levels (relative to turbine exhaust) would be a powerful counterargument to restrictive formaldehyde regulations. If ambient levels are similar to (or higher than) in-stack formaldehyde for turbines, then a NESHAP requiring catalytic control of turbine formaldehyde results in a significant burden without� environmental benefit, while also negatively impacting turbine efficiency and environmental impacts associated with catalyst construction, installation, operation, cleaning, and disposal.� Similarly, if ambient formaldehyde is significantly higher (in at least some circumstances) than currently available ambient data suggests, there could be implications for perceived formaldehyde risk and the basis, need for, and stringency of formaldehyde reductions from turbines or other combustion sources.� In a more far-reaching impact, ambient FTIR data could provide additional insights on atmospheric reactions that not only impact formaldehyde issues, but also ozone (and NOx control issues) because of the importance of formaldehyde and hydrocarbon chemistry in ambient ozone formation. These determinations are challenged by the ability to accurately measure formaldehyde at levels less than 100 parts per billion (ppbv).� Ambient measurements rely on �batch methods� subject to error (due to the inherent instability and reactivity of formaldehyde), and those methods do not provide real-time continuous results.� Extractive Fourier Transform Infrared (FTIR) methods were developed for combustion exhaust formaldehyde measurement, but measuring the ultra-low levels from turbines, commensurate with the NESHAP standard of 90 ppb, is challenging.� This project was intended assess ambient formaldehyde levels as compared to the NESHAP standard and acquire additional ambient measurement data using FTIR testing.
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Nicholson, Claire, Jonathan Wastling, Peter Gregory, and Paul Nunn. FSA Science Council Working Group 6 Food Safety and Net Zero Carbon July 2022 Interim Report. Food Standards Agency, July 2022. http://dx.doi.org/10.46756/sac.fsa.vxz377.

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The UK has a legal commitment to reach net zero carbon (NZC) emissions by 2050. This is a topic that has recently been building momentum, with clean growth being one of the four Grand Challenges set out by the UK Government. The ways we grow, process and transport food are major contributors to climate change, accounting for more than a quarter of all greenhouse gas emissions. Reducing this will require substantial changes in agriculture, manufacturing, and transport. Consequently, the Science Council and FSA Chief Scientific Adviser (CSA) agreed that a deeper understanding of the potential implications of achieving net zero on food systems, together with identification of areas of uncertainty, would be of considerable value to FSA in pre-empting future policy and evidence needs in this area. In early discussions to scope the work required, Defra indicated to the FSA Science Council Secretariat that there are many new developments and changes to activity in primary production aimed at achieving net zero. The Science Council agreed, therefore, to concentrate its first investigations on changes expected in primary food production. Primary production is the production of chemical energy in organic forms by living organisms. The main source of this energy is sunlight. For the purposes of this review, primary food production includes the growing and harvesting of plants as food for humans or feed for animals, and the rearing and slaughter of animals including livestock, fish and a wide variety of aquatic and marine organisms. A Science Council Working Group 6 (WG6) began work in summer 2021, led by Science Council members Mrs Claire Nicholson (WG6 Chair) and Prof Jonathan Wastling (WG6 Deputy Chair). The brief for WG6 is to investigate the potential food safety implications arising from changes to primary food production practices and technologies that reduce carbon emissions in the next 10 years. The work programme (described in this report) covers 4 phases, with phases 1 and 2 now complete. The work so far has drawn diverse, wide-ranging, sometimes slightly conflicting, views and opinions from across academia, the FSA, Defra, industry bodies and individual food producers. This interim report summarises: The work undertaken to date (phases 1 and 2) What has been learnt including changes to practice already underway or imminent Issues arising from the changes that the FSA should be aware of Further work planned by WG6 to understand the nature of the risks in more depth (phases 3 and 4) The Science Council aims to complete its investigations by the end of 2022 and present its findings to the FSA Board as soon as possible afterwards.
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