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Tionardi, Stevanus, and Sigit Wijaksono. "Traditional Marketplace with Natural Lightings Through Louvers at Sunter Agung." E3S Web of Conferences 426 (2023): 01070. http://dx.doi.org/10.1051/e3sconf/202342601070.
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Sustainability Development Goals (SDG) point 11.b inquires the increment of cities and settlements that able to utilize resources efficiently and able to adapt with its environment. To achieve this goal, every part of the city has to be designed well enough to meet these standards while also being able to maintain it perpetually. Market as an important part of a society where people buy and sell their daily necessities, thus have to meet this goal/target. However, due to the declining condition of the building, poor management, and the existing negative stigma toward traditional market, these traditional markets are started to become neglected and hazardous to the users and in need of urgent repairs. Therefore, the market’s building designs require much needed improvements to the current traditional market’s conditions to reach its building requirements and user’s comfort. In addition, to create a sustainable environment, natural elements are also utilized to reduce building’s energy usage in particular by utilizing natural lighting / sunlight and natural ventilation. This paper presents simulation data of sunlight entering the building focusing on louvers usage within the building’s element in order to maximize the sunlight usage, not including the usage of skylight.
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Batarius, Patrisius, and Alfry Aristo Jansen Sinlae. "Chi-Square Histogram Analysis of Woven Fabric Images Made from Natural Dyes Due to Exposure to Sunlight." Journal of Intelligent System and Computation 6, no. 1 (2024): 07–17. http://dx.doi.org/10.52985/insyst.v6i1.348.
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This research aims to conduct a Chi-square analysis on the histogram of woven fabric images dyed with natural dyes following exposure to sunlight. Woven fabrics dyed with natural dyes have attracted attention in the textile industry due to their sustainability and environmental safety. Continuous sunlight is a significant factor influencing color changes in woven fabric dyed with natural dyes. The methodology involves capturing images of woven fabric pre- and post-sunlight exposure, followed by histogram analysis using Chi-Square testing, mean, mode, and standard deviation. We utilize pre-cropped and resized grayscale images. Research findings demonstrate that sunlight significantly impacts the histogram of woven fabric images dyed with natural dyes, causing shifts in color distribution, standard deviation, and mode. These findings hold critical implications for the textile industry, particularly for manufacturers of woven fabrics dyed with natural dyes. The application of Chi-Square analysis and standard deviation provides guidelines for product design, maintenance procedures, and consumer education regarding the preservation of color quality in fabrics exposed to sunlight. Changes in the quality of woven fabric images under sunlight exposure can offer essential guidance in the care and maintenance of textile products dyed with natural dyes. This research contributes to a deeper understanding of the interplay between natural dyes, sunlight, and woven fabrics, supporting the development of sun-resistant natural dyes.
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Ren, Guoping, Qichang Hu, Jie Ye, Andong Hu, Jian Lü, and Shungui Zhou. "All-Biobased Hydrovoltaic-Photovoltaic Electricity Generators for All-Weather Energy Harvesting." Research 2022 (August 22, 2022): 1–12. http://dx.doi.org/10.34133/2022/9873203.
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Hygroelectricity generators (HEGs) utilize the latent heat stored in environmental moisture for electricity generation, but nevertheless are showing relatively low power densities due to their weak energy harvesting capacities. Inspired by epiphytes that absorb ambient moisture and concurrently capture sunlight for dynamic photosynthesis, we propose herein a scenario of all-biobased hydrovoltaic-photovoltaic electricity generators (HPEGs) that integrate photosystem II (PSII) with Geobacter sulfurreducens (G.s) for simultaneous energy harvesting from both moisture and sunlight. This proof of concept illustrates that the all-biobased HPEG generates steady hygroelectricity induced by moisture absorption and meanwhile creates a photovoltaic electric field which further strengthens electricity generation under sunlight. Under environmental conditions, the synergic hydrovoltaic-photovoltaic effect in HPEGs has resulted in a continuous output power with a high density of 1.24 W/m2, surpassing all HEGs reported hitherto. This work thus provides a feasible strategy for boosting electricity generation via simultaneous energy harvesting from ambient moisture and sunlight.
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Shin, Hyeon Ho, Yung Doug Suh, and Dong-Kwon Lim. "Recent Progress in Plasmonic Hybrid Photocatalysis for CO2 Photoreduction and C–C Coupling Reactions." Catalysts 11, no. 2 (2021): 155. http://dx.doi.org/10.3390/catal11020155.
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Plasmonic hybrid nanostructures have been investigated as attractive heterogeneous photocatalysts that can utilize sunlight to produce valuable chemicals. In particular, the efficient photoconversion of CO2 into a stable hydrocarbon with sunlight can be a promising strategy to achieve a sustainable human life on Earth. The next step for hydrocarbons once obtained from CO2 is the carbon–carbon coupling reactions to produce a valuable chemical for energy storage or fine chemicals. For these purposes, plasmonic nanomaterials have been widely investigated as a visible-light-induced photocatalyst to achieve increased efficiency of photochemical reactions with sunlight. In this review, we discuss recent achievements involving plasmonic hybrid photocatalysts that have been investigated for CO and CO2 photoreductions to form multi-carbon products and for C–C coupling reactions, such as the Suzuki–Miyaura coupling reactions.
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Yantidewi, Meta, Brilliyan Hadid, and Dzulkiflih. "Arduino-based Dual Axis Solar Tracking System Prototype." MATEC Web of Conferences 372 (2022): 04013. http://dx.doi.org/10.1051/matecconf/202237204013.
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Since solar energy is an infinite source of energy, it can be used as a suitable alternative energy source. One of the technological attempts to utilize solar energy is the use of solar panels. A solar panel is a device consisting of a series of solar cells that can convert sunlight energy into electrical energy. The generated electrical energy adjusts the intensity of the received sunlight. However, in its application, most solar cells are statically placed (not following the movement of the sun), where the position of the solar panels only leads to one specific preventing optimal absorption of the intensity of sunlight and resulting electrical energy generation. Therefore, we need a solar tracking system that can automatically control the solar panels to track the movement of the sunlight so that they can absorb the sunlight optimally. The solar tracker created in this research consists of monocrystalline solar panels, LDRs, INA219 sensor, Arduino board, and servo motors. Data collection was carried out for six hours on three consecutive days. According to this study, the greatest difference in power generated by solar panels occurs between 12:00 and 13:00 WIB, with an average value of active solar tracker power of 0.5 W and static solar tracker value of 0.34 W.
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Sandeep, Sharma* Dr. O.P. Reddy. "TRANSPARENT CONCRETE." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 3 (2017): 305–8. https://doi.org/10.5281/zenodo.400947.
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Transparent concrete is the new type of concrete introduced in todays world which carries special property of light transmitting due to presence of light Optical fibres. Which is also known as translucent concrete or light transmitting concrete, it is achieved by replacing coarse aggregates with transparent alternate materials (Optical fibres). The binding material in transparent concrete may be able to transmit light by using clear resins the concrete mix. The concrete used in industry in present time is the general concrete which consists the fundamental materials i.e, water, cement, aggregate (which is coarse or fine) containing physical properties as- Grey in colour, no transparancy, high density which blocks the possibility of distinguishing bodies, shapes through it. where as transparent concrete due to the presence of Optical fibre allows to identify bodies, shapes through it. The main pur pose of using transparent concrete is to utilize sunlight as a light source following to result in saving or reducing power consomption for the same pur pose, is Can also be used for architectural purpose for new designs and attractive partition Wall. The Paper confines with the need of transparent concrete at present to utilize the sunlight and for architecture technologies. The new type of concrete Can satisfy the green energy saving with its own Natural properties.
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Syawal, M. Ichlas, and Okta Suryani. "Sintesis dan Karakterisasi Fotokatalis TiO2/Cu Menggunakan Lampu UV." MASALIQ 3, no. 6 (2023): 1370–77. http://dx.doi.org/10.58578/masaliq.v3i6.2088.
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Most of the energy consumed comes from non-renewable fossil fuel resources. Burning fossil fuels has been found to be a major cause of environmental pollution and greenhouse gas emissions, making it the most common energy source. Therefore, renewable and environmentally friendly energy resources are needed, namely sunlight. One way to utilize sunlight is to store it into hydrogen compounds. Hydrogen comes from water through a process of breaking down its molecules which is called water decomposition. Water decomposition uses sunlight and a semiconductor photocatalyst, such as TiO2. In this research, TiO2 doped with Cu metal has been synthesized using UV lamp irradiation. TiO2 has been successfully synthesized. XRD characterization to determine the structure of TiO2. TiO2 has an anatase crystal structure. Then XRF characterization is done to see the percentage of Cu that has been successfully doped. When exposed to a UV lamp for 1 hour, 0.347% Cu was successfully doped. When exposed to a UV lamp for 5 hours, 1.28% Cu was successfully doped.
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Syawal, M. Ichlas, and Okta Suryani. "Sintesis dan Karakterisasi Fotokatalis Hierarchical Porous TiO2/Cu (HPT/Cu) dengan Metode yang Ramah Lingkungan." Periodic 13, no. 3 (2024): 85. https://doi.org/10.24036/periodic.v13i3.125637.
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Most of the energy consumed comes from non-renewable fossil fuel resources. Therefore, renewable and environmentally friendly energy resources are needed, namely sunlight. One way to utilize sunlight is to store it into hydrogen compounds. Hydrogen comes from water through a process of breaking down its molecules which is called water decomposition. Water decomposition uses sunlight and a semiconductor photocatalyst, such as TiO2. In this research, TiO2 has been synthesized whose morphological structure has been modified (Hierarchical Porous TiO2) and doped with Cu metal to reduce the band gap. Hierarchical Porous TiO2 (HPT) has been successfully synthesized. XRD characterization to determine the structure and size of the particles. HPT has an anatase crystal structure with an average particle size of 19.24 nm. HPT has an energy band gap of 3.25 eV. Then doping with Cu metal causes the band gap to decrease to 2.79 eV. Metal doping has been proven to reduce the band gap energy of the HPT semiconductor photocatalyst
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Majhool, Mohammed Hassan, Haider TH Salim ALRikabi, and Mansour S. Farhan. "Design and Implementation of Sunlight Tracking Based on the Internet of Things." IOP Conference Series: Earth and Environmental Science 877, no. 1 (2021): 012026. http://dx.doi.org/10.1088/1755-1315/877/1/012026.
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Abstract In this article, for smart management and control of the solar pursuing device, an archetype is designed to evaluate or verify administration system and control. The newly-built prototype is designed for several applications to be a powerful platform for understanding the smart solar energy method. The Internet of Stuff integrates ordinary items using the Internet to enter the physical world. The IoT technology is facilitated to track solar PV (photovoltaic) power generation that can improve plant upkeep, tracking, and efficiency. This would include monitoring the solar panel and pointing it into the sunlight. It’s all feasible to utilize LDR sensors. The IoT automatically preserves track of the voltage supply the solar panel detects the towards of sunlight. The suggested system demonstrates the online utilization of solar PV power.
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TIKA AMBAR SARI, ARIF SETYO WAHYUDI. "SIRATAR PERANCANGAN SISTEM PENERANGAN JALAN PINTAR TENAGA SURYA BERBASIS IOT." SEMINAR TEKNOLOGI MAJALENGKA (STIMA) 6 (November 21, 2022): 176–79. http://dx.doi.org/10.31949/stima.v6i0.717.
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Solar street lighting can be a solution to solve these problems and can utilize solar energy. Solar street lighting is street lighting that utilizes sunlight as a source of electrical energy. In system design, there are several components, namely sensors and the addition of a microcontroller as a regulator of street lighting performance. At the implementation stage, this system is placed on a road with less light, from this stage the results obtained that the sensor coverage area can read as far as 6 meters with a reading angle of 200o the impact of the implementation of this designed system in the field of technology/innovation is better than previous tools within the range of the PIR sensor. In the social and environmental fields, the devices used such as solar panels are able to save on the use of electrical energy because they utilize natural energy, namely the sun. Providing solutions to the community in the event of a power outage, this lighting system will not die, so that at any time it is able to illuminate the community when walking at night.
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Karade, Nandini R., Samiksha D. Lohar, Rajashri S. Patil, and Suhas R. Desai. "Integrating Smart Bio-Panels and Machine Learning for Enhanced Microalgae Cultivation and Carbon Reduction." Asian Journal of Engineering and Applied Technology 13, no. 2 (2024): 36–43. https://doi.org/10.70112/ajeat-2024.13.2.4252.
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As the world becomes increasingly dependent on fossil fuels, it faces growing environmental and economic challenges, particularly with carbon emissions and energy sustainability. One promising solution involves using photosynthetic microalgae, which can absorb carbon dioxide and convert sunlight into energy-rich materials, such as biofuels. Microalgae can grow on land that is unsuitable for conventional farming and can utilize various types of water, including seawater, making them an eco-friendlier option. A critical technology for large-scale algae cultivation is the photobioreactor (PBR), a controlled system designed to promote algae growth by regulating factors such as light, temperature, and nutrients. Recent innovations are integrating PBRs with smart bio-panels, which capture solar energy, generate electricity, and simultaneously facilitate carbon dioxide removal from the atmosphere. Machine learning tools, such as Support Vector Machines (SVM), are also being employed to predict algal growth and optimize conditions for enhanced productivity. However, microalgae utilize only a small portion of sunlight for photosynthesis, and traditional cultivation methods can result in energy inefficiencies and increased salinity due to water evaporation. To enhance algae cultivation, researchers are exploring methods to capture more sunlight, including the use of specialized lighting systems or genetically engineered algae strains. These advancements could make microalgae a more efficient and sustainable source of biofuels, bioplastics, and other valuable products, contributing to the resolution of both energy and climate issues. Microalgae offer a renewable, carbon-neutral alternative to fossil fuels and could play a vital role in addressing global energy needs while minimizing the environmental impact of conventional energy sources. By integrating advanced technologies in cultivation, renewable energy production, and carbon capture, microalgae farming presents a sustainable approach to tackling energy and climate challenges, offering economic and environmental benefits.
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Deepak, Kumar, and Singh Bhoopendra. "A Review Article on Solar Based Electric Vehicle Speed Regulation." Advancement and Research in Instrumentation Engineering 2, no. 2 (2019): 1–6. https://doi.org/10.5281/zenodo.3351419.
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<em>The Electric Solar Vehicle is a solitary situated vehicle fueled by 750 W BLDC center point engine. College understudies of KIIT University from various scholarly fields worked together to structure and manufacture a sheltered, elite, cost-proficient electric sun powered vehicle. Presently days, vendors of regular assets like fuel, coal and so on are confronting a hard time to keep pace with the expanding request. Thusly, to complete this interest it is very important to make another investigation of regular asset of vitality and power. Thusly daylight is presently days viewed as a wellspring of vitality which is executed in different everyday applications. Sun powered vitality is being utilized to create power through daylight. With the assistance of this innovation we mean to make sunlight based vitality controlled vehicle in our venture. The primary segment to assemble a sunlight based vehicle is the sun powered board. The sun powered cells gather a part of the sun's vitality and store it into the batteries of the sun oriented vehicle. Before that occurs, control trackers changes over the vitality gathered from the sun oriented cluster to the best possible framework voltage, with the goal that the batteries and the engine can utilize it. After the vitality is put away in the batteries, it is accessible for use by the engine and engine controller to drive the vehicle. We are going to utilize two arrangements of batteries; one of which will get the electrical vitality from the board to drive the engine and another will be utilized as helper power source which will give expected capacity to other electrical gadgets being utilized in the vehicle. A microcontroller can be utilized in this reason which can change to the completely energized battery when it detects that another battery is unfilled or not giving enough capacity to drive the engine. Once more, we utilized a total hardware to take care of the issue of voltage vacillation because of development of the sun, earth or cloud and so forth. We utilized a voltage comparator, a transfer circuit for and a transistor alongside a diode for this reason. Comparator analyzes the voltage of sun oriented board and the battery and after that it gives the higher voltage to the transistor to initiate the hand-off which gives the required and stable voltage to the vehicle. In any case, after all these being continued, the engine controller changes the measure of vitality that streams to the engine to compare to the throttle. The engine utilizes that vitality to drive the wheels. Preliminarily our target is execute our thought on an essential model and a while later with assistance of this model we can broaden our future work on structure a continuous electric sun based fueled vehicle.</em>
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Ju, Jae Won. "Renewable Energy Promotion Policy for Elementary, Middle, and High Schools in Seoul." Applied Mechanics and Materials 672-674 (October 2014): 2178–82. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.2178.
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Sunlight generation in the schoolyard and geothermal generation are typical examples. However, from someday, sunlight generation is not doing its function enough. Many schools are trying to utilize renewable energy. But, in most of the cases, unlike preliminary plans, schools are not substantially utilizing renewable energy efficiently. In order to maximize the energy efficiency of school’s renewable energy, multiple renewable energy needs to be comprehensively combined and applied. The current method of solar energy is used in the rooftops of schools. Geothermal energy is installed using the large area of the schoolyard. Acupressure energy device using piezoelectric element is installed in the school gate, the 1st floor stairway, and the school building’s main entrance. Also, in the school’s streetlamps, noiseless, small wind energy generator is installed to generate wind energy. In conclusion, efficiently applying solar energy, geothermal energy, acupressure energy, wind energy will increase the school’s renewable energy effect.
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Peng, Jialiang, Anwei Liu, and Muyang Wang. "Evolution of Silicon Wafer Dimensions." Journal of Physics: Conference Series 2221, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2221/1/012025.
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Abstract Solar energy is a renewable energy that the world is endeavouring to utilize. The solar cell is the essential invention that makes energy transfer from light to electricity possible. Solar cells are normally made from silicon wafers due to silicon’s semi-conductivity. The thesis will focus on the development of silicon wafers’ size and fabrication technology. Through analysis of resent (in 5 years) statistics from reports released by government or incorporations, the link between the trend and the reasons behind is interpreted. ITRPV has pointed out that silicon wafers are switching to the mono-crystalline ones, the larger ones, and the PERC processed ones. The mono-crystalline ones excel in efficiency due to uniform lattice structure, but is more costly because of the Czochralski process. The larger cells can absorb more sunlight. The PERC cell technique reduces recombination and reflects unabsorbed sunlight, therefore gradually eliminates the traditional BSF technique.
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Aihik Dasgupta, Arkopriya Paul, Meghanjan Saha, Riya Dasgupta, and Dolanchapa Sikdar. "Sunlight-driven photocatalytic production of biodiesel from palm oil utilizing a solid catalyst composed of a blend of CaO and Zn." International Journal of Science and Research Archive 12, no. 1 (2024): 2573–79. http://dx.doi.org/10.30574/ijsra.2024.12.1.1095.
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Biodiesel, a promising eco-friendly substitute for petro-diesel, can be efficiently derived from abundant vegetable oils. Among these, palm oil stands out as a prime choice. A transesterification reaction was conducted on palm oil triglycerides with methanol catalyzed by CaO/ZnO blend. CaO serves as strong basic sites which are necessity for activation of methanol as well as triglycerides, whereas ZnO, a type of semiconductor, can absorb sunlight to form electron-hole pairs, thus the photocatalytic efficiency is greatly improved. This effect may reduce the activation energy and hence speeding up the reaction rate. While conventional methods utilize caustic alkalis as catalysts for oil trans-esterification, issues such as unwanted soap formation and reduced biodiesel yield arise with homogeneous alkaline catalysts. This study represents into an innovative approach using a heterogeneous catalyst mixture of CaO and ZnO activated under sunlight to produce biodiesel from waste palm oil and methanol. The study shows that 94% yield of FAME from waste palm oil used as cooking oil using various concentration of catalyst mixture which is sunlight driven. The effect of light, temperature and molar ratio on yield of biodiesel has also been studied in this present study. According to the results of the study, the highest yield of Biodiesel was obtained at 0.5 % catalysts concentration under sunlight at a 1:5 molar ratio. The optimum temperature for obtaining highest yield that has observed is 60˚C. In addition to , it has also been observed that increased concentration of catalysts and lower molar ratio minimized the overall yield of the transesterification.
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Nagai, Keiji, Yuzuri Yasuda, Tomokazu Iyoda, and Toshiyuki Abe. "Multilayerization of Organophotocatalyst Films that Efficiently Utilize Natural Sunlight in a One-Pass-Flow Water Purification System." ACS Sustainable Chemistry & Engineering 1, no. 8 (2013): 1033–39. http://dx.doi.org/10.1021/sc400095f.
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Lobo, Eodia T. Sedan, Poisson Rownaldy Takaya, and Ivanto Bin Paledung. "Realtime Monitoring Design of Solar Cell Power Plant Based on IoT." Journal of Physics: Conference Series 2394, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1742-6596/2394/1/012028.
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Abstract Solar panels are electricity generators by utilize sunlight. Monitoring of electrical energy produced by solar cells is needed by consumers to find out how much power is produced. Previously, monitoring was done by looking at the voltmeter and ampere meter indications. This study was designed a prototype to monitor current, voltage, and light intensity through the Arduino Uno-based internet network. For the solar system panels, AC and DC current and voltage sensors are used, as well as calibrated light sensors, then a data transmission system integrated into the Blynk application, designing an Arduino Uno microcontroller-based system with the Blynk application on a Smartphone via a wi-fi communication module (esp8266). Parameters DC current and connection, AC current and connection. The highest light intensity is obtained at PLTS when exposed to sunlight and load at 02:30 and the lowest is at 09:30 due to weather. The results obtained are measurements from each sensor, used directly and displayed on the Blynk Application, monitored remotely from the internet network.
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McMullen, Shannon C., and Fabian Winkler. "Soybots: Mobile Micro-Gardens." Leonardo 50, no. 5 (2017): 507–8. http://dx.doi.org/10.1162/leon_a_01232.
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Gardens express ideas and social relations; some are sites where art and technology produce material realities, construct social narratives and visualize politics. Soybots: Mobile Micro-Gardens unite code, robotics and soybean plants (robotanics) to create a speculative responsive installation that suggests questions about climate, place and agriculture implicated in contemporary practices and values. Soybots utilize light sensors to track sunlight intensity or to locate LED grow lights. As self-pollinating organisms in combination with a light-seeking mobile robotic platform, soybean plants metaphorically address the continually evolving interdependence between humans and cultivated crops, as well as the underlying political nature of photosynthesis.
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Meena, S. P. "Rapid Adaptation of Renewable Energy – A Review on Solar Energy, Types and Overview." December 2022 1, no. 1 (2022): 13–25. http://dx.doi.org/10.36548/rrrj.2023.1.002.
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Renewable energy is derived from the sources that can be renewed naturally. The majority of renewable energy sources obtained from sunlight, wind, water currents, and geothermal heat, are sustainable. Solar energy, wind energy, hydropower, geothermal energy, and other forms of renewable energy utilize a variety of methods to generate renewable resources. The sun has the potential to meet the entire world's energy requirements. Solar energy has the capacity to be efficiently and economically converted into electricity by remaining as a renewable energy source. This article will explain about the solar energy, its overview, evolution, different forms, advantages, and disadvantages.
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Meena, S. P. "Rapid Adaptation of Renewable Energy – A Review on Solar Energy, Types and Overview." December 2022 1, no. 1 (2022): 13–25. http://dx.doi.org/10.36548/rrrj.2022.1.002.
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Renewable energy is derived from the sources that can be renewed naturally. The majority of renewable energy sources obtained from sunlight, wind, water currents, and geothermal heat, are sustainable. Solar energy, wind energy, hydropower, geothermal energy, and other forms of renewable energy utilize a variety of methods to generate renewable resources. The sun has the potential to meet the entire world's energy requirements. Solar energy has the capacity to be efficiently and economically converted into electricity by remaining as a renewable energy source. This article will explain about the solar energy, its overview, evolution, different forms, advantages, and disadvantages.
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Ongkojoyo, Tiffany Aurelia, Feny Elsiana, and Liliany Sigit Arifin. "THE USE OF BAMBOO FACADES’ FREQUENCY TO IMPROVE APARTMENT USER’S WELL-BEING." DIMENSI (Journal of Architecture and Built Environment) 50, no. 1 (2023): 31–42. http://dx.doi.org/10.9744/dimensi.50.1.31-42.
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Noise from the road exceeding 40 dB disturbs the room atmosphere and quality of rest in an apartment. The aim of this research will utilize the wind to swing the kinetic facade to create background noise that supports the user's well-being. The aim of this research is to invent a kinetic façade system that supports the apartment user's well-being. To achieve this, the research utilizes wind to blow kinetic facades to produce background noise which also reduces glare from sunlight thereby improving well-being. Experiments were carried out by comparing the results of measuring frequencies of bamboo musical instruments with solfeggio frequencies. The bamboo musical instruments analyzed included 18 angklungs, 3 windchimes and 21 variations of bamboo models. The frequencies obtained by the final model are close to that of solfeggio frequencies, namely 432Hz, 639Hz, 747Hz and 852 Hz. This can reduce Daylight Glare Probability (DGP) by 13.36%, 9.69%, and 5.01%.
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Duchow, Elizabeth G., Nancy E. Cooke, Jeremy Seeman, Lori A. Plum, and Hector F. DeLuca. "Vitamin D binding protein is required to utilize skin-generated vitamin D." Proceedings of the National Academy of Sciences 116, no. 49 (2019): 24527–32. http://dx.doi.org/10.1073/pnas.1915442116.
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Vitamin D is produced in the skin following exposure to sunlight. Ultraviolet (UV) B (UVB, 280–310 nm) results in isomerization of 7-dehydrocholesterol to previtamin D that spontaneously isomerizes to vitamin D. This pool of skin-derived vitamin D is the major source of vitamin D for animals. However, the mechanisms by which it becomes available remain undefined. It has been assumed that cutaneous vitamin D is transported into the circulation by vitamin D binding protein (DBP), but experimental evidence is lacking. To determine whether cutaneous vitamin D is transported by DBP, we utilized DBP−/− mice that were made vitamin D-deficient. These animals lack measurable 25(OH)D in blood and are hypocalcemic. As controls, DBP+/+ animals were vitamin D depleted and made equally hypocalcemic. UV irradiation of DBP+/+ animals restored serum calcium and serum 25(OH)D while the same treatment of DBP−/− animals failed to show either a serum calcium or 25(OH)D response despite having normal vitamin D production in skin. Intravenous injection of small amounts of recombinant DBP to the vitamin D-deficient DBP−/− mice restored the response to UV light. These results demonstrate a requirement for DBP to utilize cutaneously produced vitamin D.
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Pitcher, T., I. N. Sergeev, and R. Buffenstein. "Vitamin D metabolism in the Damara mole-rat is altered by exposure to sunlight yet mineral metabolism is unaffected." Journal of Endocrinology 143, no. 2 (1994): 367–74. http://dx.doi.org/10.1677/joe.0.1430367.
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Abstract Vitamin D may be endogenously synthezised in the skin in the presence of sunlight or, alternatively, acquired from dietary sources. Cryptomys damarensis appear to have a naturally impoverished vitamin D status with low plasma concentrations of both 25-hydroxyvitamin D (25(OH)D; <5 ng/ml) and 1,25-dihydroxyvitamin D (1,25(OH)2D; <20 pg/ml). We attribute this to their underground habitat and herbivorous habits. We questioned whether these subterranean mammals could utilize sunlight-mediated pathways and therefore compared vitamin D metabolism and function when animals were (a) housed naturally (control), (b) given an oral vitamin D3 (D3) supplement (1 IU/g dry matter food eaten per day) and (c) exposed to 10 h of sunlight. Control animals exhibited a highly efficient apparent fractional absorption of both calcium (Ca) and inorganic phosphorus (Pi) (>90%), passive mode of intestinal mineral uptake, yet tightly regulated serum ionized calcium (Ca2+). The ratio of 25(OH)D-1α-hydroxylase (1-OHase) to 25(OH)D-24R-hydroxylase (24-OHase) activity in the kidney, corresponded with a state of vitamin D deficiency. Cryptomys damarensis responded to both oral D3 supplementation and sun exposure by an increase in plasma concentration of 1,25(OH)2D with a commensurate decline (P<0·05) in 1-OHase activity, and a resulting decrease (P<0·05) in the ratio of 1-OHase:24-OHase activity. Despite these changes, the intestinal mode of Ca uptake and plasma total Ca, Ca2+ and Pi remained unchanged with either treatment. Responses to sunlight were less pronounced than that of oral D3 supplementation. These data confirm that naturally vitamin D-deficient mole-rats can convert vitamin D to the active hormone 1,25(OH)2D, and indicate that mole-rats function optimally at the low concentrations of vitamin D metabolites found naturally. Furthermore, these animals exhibit a highly efficient vitamin D-independent mode of intestinal Ca absorption. Journal of Endocrinology (1994) 143, 367–374
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Adhi Setiapraja, Lutfi, Mohamad Rangga Sururi, and Veny Rachmawati. "Potensi Limbah Biomassa Menjadi Karbon Aktif Sebagai Upaya Resources Recovery : Studi Literatur." Jurnal Serambi Engineering 9, no. 1 (2023): 7795–800. http://dx.doi.org/10.32672/jse.v9i1.741.
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Reutilization of natural resources as a resource recovery effort is one aspect of sustainable development, one of which is the utilization of biomass waste. Biomass waste is waste from agricultural, plantation, livestock, and forestry processes that contain organic matter composed of carbon dioxide bonds, air, water, soil, and sunlight from plants and animals. Pollution by the accumulation or untreated biomass waste will result in the potential formation of greenhouse gases (GHG). One of the efforts is to utilize biomass waste into activated carbon by carbonizing and activating the biomass waste. The indication of why biomass waste can be used as a material for making activated carbon is because biomass waste contains lignocellulosic materials that have the ability to absorb metals and colors. The purpose of this paper is to see the potential of various kinds of biomass waste that can be utilized into activated carbon by conducting a journal review. The results of the review of various journals show that various kinds of biomass waste can be utilized into activated carbon. The lignocellulosic content of biomass waste consists of lignin in the range of 8%-53.85%, cellulose in the range of 6.92%-81%, and hemicellulose 11%-41%.
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Chenglin, Li *. Mahmudul Kabir. "STUDY ON USING DAYLIGHT AS LIGHTING SYSTEM ACCORDING TO VARIOUS SUN ANGLES." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 7, no. 3 (2018): 653–65. https://doi.org/10.5281/zenodo.1207019.
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In recent years, it has become more common for us to rely on artificial lighting during the daytime even when daylight can be obtained at places such as office buildings. Using daylight may pave the way for energy saving system of office buildings, and the development of lighting devices which actively utilize daylight is attracting attentions. However, there are few lighting devices that are able to take light based on the movement of the sun. As the sun moves throughout the day, the magnitude and direction of light entering the room change also. Due to this, it is difficult to control the amount of light entering the room. In this study, we aim to solve this problem by installing several blind reflectors on the window whereby the reflectors are able to change its angle according to the movement of the sun. By having these reflectors, the light will be directed to the room ceiling and diffused light from the ceiling will be used to create an optimal room lighting environment. This system was simulated, assessed for all seasons on sunny days in the simulator and its energy saving effect was evaluated. With the obtained result, we hope to contribute in the promotion of a greener society.
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Ramaiyan, Kannan, Kyle Troche, Timothy J. Boyle, and Fernando H. Garzon. "Bismuth Oxychloride Nanoflakes Based Wearable Colorimetric Sensors for Efficient Monitoring of UV Exposure." ECS Meeting Abstracts MA2024-01, no. 50 (2024): 2749. http://dx.doi.org/10.1149/ma2024-01502749mtgabs.
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Ultraviolet radiation from sunlight is essential for human health in many ways such as facilitating vitamin D synthesis while excessive exposure can cause adverse effects such as premature aging, sunburn, and skin cancers. In the USA, between 2007 and 2011, nearly five million adults were treated for skin cancer annually with average treatment costs of $8.1 billion each year. Hence, monitoring daily exposure to sunlight is essential to avoid developing health risks. Colorimetric UV sensors change color as a function of UV exposure, provide onsite information about the level of exposure, and can act as a personal wearable device to assist in making informed decisions on sunlight exposure. These sensors utilize radiation-induced reactions on a dye to produce a color change. We developed a BiOCl based wearable UV sensor for monitoring UV exposure where a white-to-black color transformation is induced due to the creation of oxygen vacancies in BiOCl. This color transformation is not quantifiable in bulk BiOCl; hence BiOCl was purposely dispersed on filter paper to form petal-like nanostructures that help quantify the color change. Four different dye molecules, 6-carboxyfluorescein, 5-carboxyfluorescein, rhodamine-B, and Prussian blue were evaluated, where 6-carboxyfluorescein gave the best color contrast. The sensor responds to UVA, UVB, and UVC and with proper UV filters can be made selective for specific UV radiations. This unique colorimetric UV sensor can help manage personal UV exposure and reduce the risk of sun exposure ailments. Reference: Kyle Troche, Kannan Ramaiyan, Timothy J. Boyle, Fernando H. Garzon, “Bismuth Oxychloride Nanoflakes Enabled High Sensitivity Colorimetric UV Dosimetry” ACS Appl. Nano. Mater. 2023, 6, 7.
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Nugroho, Arif Setyo, Aris Teguh Rahayu, Muhammad Nur Cahyo NS, and Rohmat Aditya Dwi N. "UPAYA PENINGKATAN PRODUKTIFITAS PEMBUATAN SANGKAR BURUNG BERBASIS ROTAN KETIKA MUSIM HUJAN." SOROT : Jurnal Pengabdian Kepada Masyarakat 3, no. 1 (2024): 69–74. http://dx.doi.org/10.32699/sorot.v3i1.6596.
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A group of young people from Jegrik village, Karanganyar district, have a business making bird cages. The shape of bird cages they make are oval-shaped bird cages, which are used to cage turtle doves, puter birds, and turtle doves. Making bird cages using rattan as raw material. With the technology developed in the form of a blengker mal tool that utilizes the heat propagation of fire, this tool is a solution to the problems that occur during the rainy season, where heat from the sun is needed to make the blengker, but often there is no sunlight, which hampers production. It's different when during the dry season the heat of the sun is used to make blengker. Problems during the rainy season can be overcome with heating devices that utilize a heat propagation system from a flame that spreads its heat to the walls of the device. The heat comes from the flame from the LPG gas stove. To make a blengker, it only takes approximately 7 minutes, the heat on the walls of the blender is approximately 40oC-70oC.
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Chen, Hongjun, and Lianzhou Wang. "Nanostructure sensitization of transition metal oxides for visible-light photocatalysis." Beilstein Journal of Nanotechnology 5 (May 23, 2014): 696–710. http://dx.doi.org/10.3762/bjnano.5.82.
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To better utilize the sunlight for efficient solar energy conversion, the research on visible-light active photocatalysts has recently attracted a lot of interest. The photosensitization of transition metal oxides is a promising approach for achieving effective visible-light photocatalysis. This review article primarily discusses the recent progress in the realm of a variety of nanostructured photosensitizers such as quantum dots, plasmonic metal nanostructures, and carbon nanostructures for coupling with wide-bandgap transition metal oxides to design better visible-light active photocatalysts. The underlying mechanisms of the composite photocatalysts, e.g., the light-induced charge separation and the subsequent visible-light photocatalytic reaction processes in environmental remediation and solar fuel generation fields, are also introduced. A brief outlook on the nanostructure photosensitization is also given.
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Cheng, Ta Chih, Kuo Shan Yao, Yung Hsu Hsieh, Ming Yi Chang, Chen Yu Chang, and Guan Hao Wang. "Visible Light Activated Photocatalytic Degradation Effect of V-TiO2 on Azo Dye Wastewater." Advanced Materials Research 79-82 (August 2009): 969–72. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.969.
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In this study, the V-doped TiO2 was synthesized by sol-gel method and we evaluate the photocatalytic degrading efficiency of V-TiO2 complexes on azo dye wastewater under irradiation with visible light (λ= 419 nm). The results showed that the Anatase structure and nano size of V-TiO2 complexs were formed and they had better photo-response to visible light than pure TiO2. The efficiency of decoloriztion or destruction efficiency was less than 6 % using TiO2 alone but efficiency of 0.10VT-I was up to 90% after irradiated with visible light for 240 min. These evidences also reveal that the system of V-TiO2 complexes can directly utilize the sunlight and can be used to treat organic pollutants in the practical wastewate treatment factories.
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Wang, Yubo, Xingbai Hong, Dan Wu, He Wu, and Akira Ishibashi. "Cylindrical Waveguides and Multi-Junction Solar Cell Investigated for Two-Dimensional Photorecepto-Conversion Scheme." Photonics 10, no. 3 (2023): 299. http://dx.doi.org/10.3390/photonics10030299.
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Presented is a new cylindrical waveguide (WG) system based on a two-dimensional photoreceptor-conversion scheme (2DPRCS) for lamppost-type solar-cell systems. The optical properties of polydimethylsiloxane (PDMS) were evaluated as the WG material, and we found that the intrinsic optical loss of our PDMS-based waveguide (~3 m−1) is low enough to be used in a 50 mm diameter lamppost 2DPRCS. The reflection solar concentrator (RSC) is also proposed, which can be combined with multijunction Si solar cells for lamppost-type systems that utilize sunlight coming not only from the south side but also from the east and west sides. We believe that, in the near future, this new approach based on 2DPRCS can enable high-efficiency concentrated photovoltaic systems.
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IS, Nina Paramytha, and Tamsir Ariyadi. "The Use of Alternative Energy as a Driver Fishing Boat." Buletin Ilmiah Sarjana Teknik Elektro 5, no. 4 (2023): 438–47. https://doi.org/10.12928/biste.v5i4.9127.
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The use of outboard engines commonly used by fishing boats is considered no longer effective, considering the price of BBM (Fuel Oil) which always increases and the effects caused by the use of outboard engines are not environmentally friendly such as producing noise and air pollution caused. This research aims to overcome the problems of using outboard engines by utilizing solar panels to convert sunlight into electrical energy and DC 775 motors as boat propulsion. The use of solar panels with a tracker system to maximize solar panels in producing electrical energy which is then stored in a battery to drive a DC motor. The results of the calculation of a battery with a capacity of 20 Ah can drive the boat for 3.7 hours, where fishermen need 1 liter of fuel to run the outboard engine for 30 minutes. The maximum boat speed generated is 5.76 knots. The results of the analysis in terms of costs incurred for fuel operations are 0% because they utilize sunlight and there is no pollution and noise generated when the boat works. Future development can replace the battery with a larger capacity and add solar panels for faster battery charging. With this research, researchers hope to help fishermen in reducing operational costs and the success of catching more fish.
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Pulukadang, Sri H. V., and Nurlaila Triutari. "Urang Aring (Eclipta alba (L.) Hassk) Leaf Extract as Natural Dyes for Making Pomade." Jurnal Akademika Kimia 12, no. 1 (2023): 32–38. http://dx.doi.org/10.22487/j24775185.2023.v12.i1.pp32-38.
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Dyes have an important role in the industrial sector to increase consumer interest in a product. Urang aring is a plant with color pigments that can be used as natural dyes. This study aims to utilize urang aring leaf extract as a natural hair dye for the manufacture of pomade by producing the quality of pomade preparations according to standards. The research method was carried out experimentally including: determining the water content and ash content of urang aring leaves and optimizing the time of dye extraction and storage of urang aring leaf extract using a UV - Vis spectrophotometer, then making pomade based on the formulation of urang aring leaf extract and beeswax, namely: formulation I (3:3), II (5:3), and III (10:3). Pomade quality test includes: organoleptic test, homogeneity test, pH test, freeze-thaw test, and color stability test against sunlight. Based on the results of the study, it was found that urang aring leaf extract can be used as a natural dye for the manufacture of pomade with formulation III which meets the standards in the pomade quality test because it has a soft dense texture, blackish green color, and has no odor with a pH of 6 which is ideal for hair. Pomade formulation III also has a texture that does not separate at extreme temperatures and good color stability under direct sunlight for 5 hours.
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Hisatomi, Takashi, and Kazunari Domen. "(Invited) Particulate Photocatalyst Systems for Sunlight-Driven Water Splitting." ECS Meeting Abstracts MA2018-01, no. 31 (2018): 1891. http://dx.doi.org/10.1149/ma2018-01/31/1891.
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Sunlight-driven water splitting has been studied actively for production of renewable solar hydrogen as a storable and transportable energy carrier [1-3]. Both the efficiency and the scalability of water-splitting systems are important factors for practical utilization of renewable solar hydrogen because of the low areal density of solar energy. Particulate photocatalyst systems do not involve any secure electric circuit and thus can be spread over a wide area by inexpensive processes potentially. In this regard, activation of particulate photocatalysts and development of their reaction systems are important subjects. A semiconductor photocatalyst can split water into hydrogen and oxygen thermodynamically when the band gap straddles the potentials of the hydrogen evolution reaction (0 V vs. RHE) and the oxygen evolution reaction (+1.23 V vs. RHE). In addition, it is generally necessary to modify photocatalysts with appropriate cocatalysts in order to facilitate charge separation and surface redox reactions. The authors’ group has studied various semiconducting materials including oxides, (oxy)nitrides, and (oxy)chalcogenides for photocatalytic water splitting [1]. Recently, we have found that doping Al into SrTiO3 boosts the water splitting activity by two orders of magnitude [4]. The resultant Al-doped SrTiO3 achieved an apparent quantum yield (AQY) of 30% at 360 nm. Through the optimization of the preparation and modification methods of Al-doped SrTiO3, the AQY of photocatalytic water splitting has been upgraded to 56% and higher at 365 nm. Processing of such particulate photocatalysts into potentially extensible forms is to be presented [5]. Two different photocatalysts can also be combined so that hydrogen and oxygen are generated on the different photocatalysts [1,3]. Recently, the authors’ group has developed particulate photocatalyst sheets consisting of the hydrogen evolution photocatalyst (HEP) and the oxygen evolution photocatalyst (OEP) embedded into conductive layers by particle transfer [6-11]. A photocatalyst sheet consisting of La- and Rh-codoped SrTiO3 as the HEP and Mo-doped BiVO4 as the OEP embedded into a carbon conductor exhibits a solar-to-hydrogen energy conversion efficiency of 1.0% at ambient pressure [10]. The photocatalyst sheet shows significantly higher water splitting activity than the corresponding powder suspension systems, because the conductor layer transfers photogenerated electrons between photocatalyst particles effectively. In addition, evolution of hydrogen and oxygen in close proximity allows to prevent generation of pH gradient during the water splitting reaction. Therefore, the photocatalyst sheet is scalable directly without sacrificing the high activity. However, the absorption edge wavelengths of La- and Rh-codoped SrTiO3 and Mo-doped BiVO4 are 520 nm at most. It is necessary to utilize photocatalysts with longer absorption edge wavelengths to pursuit higher STH values. We have found that some (oxy)chalcogenides and (oxy)nitrides with narrower band gap energies are applicable as the HEP and the OEP of particulate photocatalyst sheets. In this talk, recent progress and future challenges in photocatalytic water splitting and system development will be presented. Hisatomi et al., Chem. Soc. Rev. 2014, 43, 7520. Hisatomi et al., Catal. Lett. 2015, 145, 95. Hisatomi et al., Faraday Discuss. 2017, 198, 11. Ham et al., J. Mater. Chem. A 2016, 4, 3027. Xiong et al., Catal. Sci. Technol. 2014, 4, 325. Minegishi et al., Chem. Sci. 2013, 4, 1120. Wang et al., J. Catal. 2015, 328, 308 Wang et al., Nat. Mater. 2016, 15, 611 Wang et al., Faraday Discuss. 2017, 197, 491 Wang et al., J. Am. Chem. Soc. 2017, 139, 1675. Hisatomi et al., Curr. Opin. Electrochem. 2017, 2, 148.
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Widayat, R., and A. B. Studyanto. "Utilization of natural resources in supporting eco-interior design." IOP Conference Series: Earth and Environmental Science 905, no. 1 (2021): 012034. http://dx.doi.org/10.1088/1755-1315/905/1/012034.
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Abstract In creating interior designs, most people do not optimize natural resources and the concept of eco-interior design. This causes a lack of comfort such as hot air, lack of light during the day, and noise entering the interior. The question is how to utilize natural resources optimally in supporting interior eco-design. To answer this, identification on several cases with similar problem solving need to be done. The findings can be used as inspirations for the community in constructing public buildings and residences, so that interior designs can be occupied comfortably. The results and discussion found several alternatives namely technical utilization for optimal but not dazzling sunlight, technical use of optimal cross-air circulation in buildings, and utilization of natural building materials that can absorb sound to overcome noise from outside.
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K. Venkatesh and Sathishkumar P. "A Three-Port DC-DC Converter Combined Configuration Method for PV-Battery Power Systems based on Prognostic Anticipating Controller Algorithm." International Research Journal on Advanced Engineering and Management (IRJAEM) 2, no. 04 (2024): 1016–26. http://dx.doi.org/10.47392/irjaem.2024.0136.
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The Photovoltaic (PV) system is renewable energy developed nowadays in the power generation system and it is connected to the grid. This grid-tie PV system is used to generate power and utilize consumer applications, in the grid-tie PV system the output is not efficient because of the saturation of the sunlight in the PV array and it's affected the power quality and stability of this system. In this proposed Prognostic Anticipating Controller Algorithm (PACA) system, a DC synchronization with PV and ESS is proposed to achieve improved power quality and the losses are less to compare the existing method. Due to the concern with energy emergencies, the energy obtained from sunlight is considered the most capable conventional resource. Hence, the maximum power point tracking approach is necessary for obtaining enhanced efficiency from solar panels. In the case of Direct Current (DC) application, the output obtained from the Photovoltaic (PV) array cannot be directly connected to electronic devices. For regulating the output from the PV array, the DC-DC converter is provided in between the load and the array. The converter design plays a significant role in tracking the maximum power point of the solar panel. The PACA logic controller is employed in the generation of optimal control pulse for the DC-DC converter. Moreover, in the solar photovoltaic system, the steady-state operation is performed and the various solar irradiance results are analyzed.
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MALLICK, Md Abu Imran, and Narayan GHORAI. "Temporal distribution pattern of butterflies in an unfenced location at Serampore, Hooghly, West Bengal, India." Nova Geodesia 3, no. 3 (2023): 126. http://dx.doi.org/10.55779/ng33126.
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The same niche cannot support two species. To avoid negative interactions, species adapt their presence and utilize different types of resources according to different time periods. Many factors, including temperature, influence insect communities. Butterfly species utilize similar habitat types or even microhabitats with other co-species and share the same daytime if the resources are plentiful. However, they follow a certain ecological pattern of temporal distribution by using different intervals of the same time frame. With the use of the Modified Pollard Walk Method, the present study explores butterfly presence, species exclusivity, and commonality in an area situated in Jolkol, Serampore, West Bengal. The presence of reliable sources of nectar, a plentiful supply of food plants conducive to egg-laying, ample sunlight in open spaces, minimal pesticide usage, and limited human interference within the examined region have all contributed to a diverse array of butterfly species in the area. Butterfly species are susceptible to changes in landscape and vegetation, and the loss of habitats caused by urbanization and environmental degradation threatens butterfly diversity. Many butterfly species function as ecological indicators and provide numerous ecosystem services. As a result, conservation and preservation of butterfly diversity are important, particularly in urban habitats.
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Cahya, Aulia Adi, and Riky Dwi Puriyanto. "The Design of Rice Milling and Screening Systems Uses the DC Motor PID Method." Control Systems and Optimization Letters 1, no. 1 (2023): 1–6. http://dx.doi.org/10.59247/csol.v1i1.2.
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Rice is one of the staple foods of most Indonesian people, the processing of rice derived from rice plants goes through many stages, one of which is rice milling and sifting. This research aims to make it easier for farmers to do milling and screening, the system will utilize DC motor rotation which is suitable for application in milling and screening, this system also utilizes electrical energy obtained from sunlight so it is more efficient and environmentally friendly. The milling DC motor will use the PID method with a value of P=25, I=50 and D=5 with a setpoint of 250, while the winnowing motor will use a PWM setting of 200 with a voltage of 7.07 V and a motor RPM of 348. This study also has digital scales. which can easily find out the results in units of grams with a maximum capacity of 5,000 grams. The prototype of this rice grinder and sifter has a success rate of testing sensors and motors in the range of 50%, even though the milling results can be said to be less than optimal, the screening results can work according to function, as well as solar panels that can optimally provide power to move the actuators and sensors. sensors in this system.
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Fathara, Aesha. "Analisis Energi Baru Terbarukan Untuk Sistem Kelistrikan Desa." Journal of Applied Smart Electrical Network and Systems 2, no. 01 (2021): 13–23. http://dx.doi.org/10.52158/jasens.v2i01.181.
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Electricity is a primary need for society. Energy that will never run out of availability is energy from solar radiation. Indonesia is an agricultural country that can utilize alternative energy by utilizing biomass energy, one of which is rice husk and straw waste. Based on data from the BMKG Paloh Station, Sambas Regency has a fairly large intensity of sunlight because it is located just below the equator. The intensity of light in the dry season can reach 6 hours in a period of 8 hours of sunlight, namely from 8.00 - 16.00. The resulting energy conversion is 38.01 mj/m2/day. Meanwhile, for the biomass potential from the BPS data of Sambas Regency in Tebas District, there are 6,730 ha of rice fields, which can produce 403 tons of rice husk and straw waste in one day for 1 year and can produce 5 million Mj/day . The results of the conversion analysis of the optimization of renewable energy for power plants that have an annual peak power of 45kW and daily energy consumption of 330kWh/day obtained the most optimal potential for rice husk and straw waste, which requires an initial capital of $ 67,120 with a total net present minimum cost. Electricity from the system cost is also minimum at US$ 0.005/kWh. And in technical economic analysis, modeling this system requires a payback period of about 11 years without grid bills and 5 years with grid bills. Meanwhile, conversion using PV requires larger capital and longer payback.
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Dona Martilova, Nila Windria Pebri, Niken Ayu Kurniawati, Deya Aliyah Maysaroh, and Endang Sri Wahyuni. "Orange Scrub With Lemongrass (ORRIN)." Transformasi Masyarakat : Jurnal Inovasi Sosial dan Pengabdian 1, no. 4 (2024): 151–56. https://doi.org/10.62383/transformasi.v1i4.738.
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Women are known for their focus on beauty, especially skin care. Outdoor activities expose the skin to sunlight, dust and pollution, causing skin problems. Using traditional body care in the form of scrubs made from natural ingredients such as orange peel and lemongrass can clean the skin deeply. Making natural body scrubs from orange peel and lemongrass is done because there is still an abundance of orange peel waste along with increasing public awareness of skin health and beauty. This product aims to utilize natural ingredients for skin care. The method for this community service activity is divided into 3 stages, namely the survey stage, the production stage and the marketing stage. The results obtained from this activity are the Orange Scrub With Lemongrass product which has been marketed to various groups of society. Marketing carried out both directly and indirectly has had a very good impact on this product.
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Ramsey, Craig L. "Biologically Structured Water (BSW) - A Review (Part 3): Structured Water (SW) Generation, BSW Water, Bioenergetics, Consciousness and Coherence." Journal of Basic & Applied Sciences 19 (December 31, 2023): 230–48. http://dx.doi.org/10.29169/1927-5129.2023.19.18.
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Natural water sources become partially structured when exposed to cold temperatures, aeration, and sunlight in high mountain streams or kosmotropic ions. Drinking water devices that make structured water utilize methods such as resonance, vortex designs, and static magnets to alter H-bond configurations in liquid water. Other methods, such as the Advanced Oxidation Process (AOP) or vortexing, utilize energy or mechanical methods that are strong enough to break the covalent bonds in liquid water. After water splits into hydronium ions (H30+) and hydroxyl radicals (•OH), these molecular species rapidly reform back into SW water with stable H-bonds. Several companies offer AOP water generators for the remediation of wastewater, industrial water treatment, hydroponic, and agricultural uses. Other companies offer vortex generators for SW drinking water for households and institutions. The final section summarizes the interconnectivity and synchronization between BSW water, bioenergetics, consciousness, and quantum coherence. The continuous layer of BSW water within all cells and covering all biological membranes allows it to capture, store, resonate, amplify, and transmit a wide spectrum of EMF energy that forms the basis of bioenergetics. Application of quantum biology principles to BSW water opens promising research fields potent with solutions to enhance human health and longevity. Other SW and BSW water research areas potentially include environmental and wastewater treatment, medical treatments for age-related diseases, energy generation, and possibly even manipulation of rainfall patterns.
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Sricharan, Matangi, Bikesh Gupta, Sreejesh Moolayadukkam, and H. S. S. Ramakrishna Matte. "Exfoliation in a low boiling point solvent and electrochemical applications of MoO3." Beilstein Journal of Nanotechnology 11 (April 17, 2020): 662–70. http://dx.doi.org/10.3762/bjnano.11.52.
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MoO3 is a versatile two-dimensional transition metal oxide having applications in areas such as energy storage devices, electronic devices and catalysis. To efficiently utilize the properties of MoO3 arising from its two-dimensional nature exfoliation is necessary. In this work, the exfoliation of MoO3 is carried out in 2-butanone for the first time. The achieved concentration of the dispersion is about 0.57 mg·mL−1 with a yield of 5.7%, which are the highest values reported to date. These high values of concentration and yield can be attributed to a favorable matching of energies involved in exfoliation and stabilization of MoO3 nanosheets in 2-butanone. Interestingly, the MoO3 dispersion in 2-butanone retains its intrinsic nature even after exposure to sunlight for 24 h. The composites of MoO3 nanosheets were used as an electrode material for supercapacitors and showed a high specific capacitance of 201 F·g−1 in a three-electrode configuration at a scan rate of 50 mV·s−1.
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Mohd Mokhtar, M. A., W. N. S. Wan Mohamed Zuri, N. I. Mohd Rasid, A. Ahmad Asmadi, and N. Abdul Manaf. "Decision Making on the Renewable Energy Penetration in Malaysia via SWOT-PESTLE Analysis: Hydrogen Fuel Cell and Solar Photovoltaic Thermal Technology." IOP Conference Series: Materials Science and Engineering 1257, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1757-899x/1257/1/012009.
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Abstract Malaysia is actively working to move towards renewable energy (RE) generation for sustainable growth. Hydrogen fuel cell (HFC) and solar photovoltaic thermal (PVT) feature emerging RE technologies that can supersede conventional power generation performance. HFC and PVT utilize renewable resources, which are hydrogen, oxygen and sunlight, to produce electricity without compromising the environment. However, no in-depth evaluation has been conducted to assist the decision-making of Malaysia’s HFC and PVT technology penetration. This study provides decisions on the feasibility and viability of HFC and PVT based on the Strength, Weakness, Opportunities, Threat (SWOT) and Political, Economic, Social, Technological, Legal, Environment (PESTLE) analyses. Based on the SWOT-PESTLE analysis, PVT exhibits great potential in Malaysia’s RE portfolio compared to HFC. Technology readiness and social acceptance are the merits of PVT diffusion in Malaysia. Nevertheless, this preliminary decision entails validation from the industries and experts to underpin the shorthand assessment of the present work
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Palanisamy, Chella Perumal, Bo Cui, Hongxia Zhang, Selvaraj Jayaraman, and Gothandam Kodiveri Muthukaliannan. "A Comprehensive Review on Corn Starch-Based Nanomaterials: Properties, Simulations, and Applications." Polymers 12, no. 9 (2020): 2161. http://dx.doi.org/10.3390/polym12092161.
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Corn (Zea mays L.) is one of the major food crops, and it is considered to be a very distinctive plant, since it is able to produce a large amount of the natural polymer of starch through its capacity to utilize large amounts of sunlight. Corn starch is used in a wide range of products and applications. In recent years, the use of nanotechnology for applications in the food industry has become more apparent; it has been used for protecting against biological and chemical deterioration, increasing bioavailability, and enhancing physical properties, among other functions. However, the high cost of nanotechnology can make it difficult for its application on a commercial scale. As a biodegradable natural polymer, corn starch is a great alternative for the production of nanomaterials. Therefore, the search for alternative materials to be used in nanotechnology has been studied. This review has discussed in detail the properties, simulations, and wide range of applications of corn starch-based nanomaterials.
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Mertia, Parul, Surendra Kothari, and N. L. Panwar. "Energetic and exergetic analysis of solar photovoltaicthermoelectric generator hybrid system." INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES 17, no. 2 (2021): 256–61. http://dx.doi.org/10.15740/has/ijas/17.2/256-261.
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The objective of present study is to determine the energy and exergy performance of the developedSolar Photovoltaic- Thermoelectric generator hybrid system. The experimental setup was examined under Udaipur climatic conditions (24°352 73 N; 73°422 453 E). The hybrid systems convert sunlight into electric power by the PV module and then utilize the rest thermal energy by the TEG module. Based on the first law of thermodynamics, the energy analysis is used to evaluate the output performance of the hybrid system. And the output electric power of the hybrid system is calculated. Moreover, the second law of thermodynamics is applied to the exergy analysis of the hybrid system. The exergy losses caused by the irreversible process of solar radiation converted into electric power and thermal energy are evaluated. The calculation results demonstrate that exergy of system follows the incident solar radiation and most of the input exergy has been lost at output with maximum losses occur when solar radiations are converted into heat.
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Chen, Xiaochuan, Pengxia Liang, Qian Wu, Qiaofeng Tan, and Xue Dong. "Fluorescence Enhanced Optical Resonator Constituted of Quantum Dots and Thin Film Resonant Cavity for High-Efficiency Reflective Color Filter." Nanomaterials 11, no. 11 (2021): 2813. http://dx.doi.org/10.3390/nano11112813.
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Conventional color filters selectively absorb a part of the backlight while reflecting or transmitting other light, resulting in the problem of low efficiency and energy wasting. For this problem, a new concept of fluorescence enhanced optical resonator was proposed and verified in this paper. The new structure consists of structural color filter and light-conversion material. Specially, a thin film resonant cavity was designed, and InP/ZnSe/ZnS quantum dots were inserted inside the resonator. When illuminated by sunlight, the novel fluorescence enhanced optical resonator could not only reflect the specific light, but also convert absorbed energy into desired light, leading to the utilization efficiency improvement of solar energy. An all-dielectric red fluorescence enhanced optical resonator was fabricated, with peak equivalent reflectance up to 105%. Compared with a thin film resonator, the enhancement coefficient of the as-proposed structure is about 124%. The new optical structure can utilize solar source efficiently, showing application potential as the next generation of reflective color filters for display.
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Fang, Dan, Fei Wang, Xiao Hua Wang, and Si Ning Liu. "Solar Pumped Nd:YAG Laser by the Fresnel Lens." Key Engineering Materials 552 (May 2013): 345–48. http://dx.doi.org/10.4028/www.scientific.net/kem.552.345.
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Shortly after the invention of the laser, researchers began to dream of converting sunlight into laser radiation directly. A direct conversion of concentrated solar light into a coherent laser beam improved the conversion efficiency because of the simple design of the structure, which is an innovation in the new field of solar energy utilization. We utilize the Fresnel lens of 1m2 to collect solar light, which is coupled into the conical chamber pumping Nd:YAG crystal, in 5mm-diameter 80mm-length rod. The pumping cavity is designed to combine end-pumping with side-pumping, in which the pumping light comes from many directions. It could compensate the drawbacks of single end-pumping or side-pumping. In the experiment, we obtain the maximum laser output power of 2.5 W, with a slope efficiency achieving 1.3%. By the Tracepro ray-tracing software, simulating the incoming energy distribution in the focus of the Fresnel lens, the concentration ratio of 104 is achieved.
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Ananda, Kevin, and Agus Hariyadi. "Adaptive Photovoltaic Performance Study with a Biomimetic Approach for Energy Saving." Journal of Artificial Intelligence in Architecture 2, no. 1 (2023): 1–15. http://dx.doi.org/10.24002/jarina.v2i1.6331.
Full textAbstract:
The facade has a function to improve the energy performance of the building by controlling the acquisition of sunlight and natural lighting. The biomimetic architecture approach is one form of architecture that imitates the principles of nature—integrating photovoltaics with facades to utilize solar lighting and generate electricity for building needs. The novelty of this study aims to examine the effectiveness of adaptive facade forms with a biomimetic approach integrated with photovoltaic on heat transfer and energy saving and determine the factors that influence it. This study uses the parametric modeling simulation method. In addition, this study compares aspects of heat transfer and energy generated by photovoltaics on adaptive facades with a biomimetic approach. The study's results using a flower petal-shaped adaptive biomimetic facade showed that OTTV 35 watt/m2 (standard) obtained all grid configurations with an opening angle of 10-20 degrees, and the average electrical energy produced by integrated Photovoltaic was around 1,757.7 kWh. This result provides energy savings of 20.03% on a building.
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Yuge, Shota, Dang Trang Nguyen, and Kozo Taguchi. "Enhanced Visible Light Photocatalytic Activity of g-C3N4/SiO2@TiO2 Heterojunction Fabricated by Hydrothermal Synthesis." Defect and Diffusion Forum 428 (August 22, 2023): 125–30. http://dx.doi.org/10.4028/p-b5m89a.
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Photocatalysts that can utilize sunlight energy have attracted attention. In this study, g-C3N4 and mesoporous SiO2@TiO2 particles were mixed by hydrothermal synthesis. g-C3N4 was made by a simple method of directly heating melamine. Mesoporous SiO2@TiO2 was prepared using the stover method. These two types of particles were then mixed by hydrothermal synthesis. Hydrothermal synthesis reduced the size of the g-C3N4 particles, and they bound more closely with the TiO2 particles. The degradation of methylene blue dye by visible light was performed to evaluate the organic degradation of the mixed particles. In addition, the mixed particles were formed into a thin film by the spin-coating method. The film's methylene blue degradation performance and the film's power generation performance in a battery were evaluated. The film showed high convenience in the practical application of photocatalytic degradation of organic pollutants because it can be easily separated from the treated liquid after organic matter degradation.
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Qian, Chenlu, Lu Wang, Qiang Li, and Xuemei Chen. "A Strategy of Candle Soot-Based Photothermal Icephobic Superhydrophobic Surface." Coatings 14, no. 5 (2024): 612. http://dx.doi.org/10.3390/coatings14050612.
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Anti-icing/de-icing is of fundamental importance in practical applications such as power transmission, wind turbines, and aerofoils. Despite recent efforts in developing engineering surfaces to delay ice accumulation or reduce ice adhesion, it remains challenging to design robust photothermal icephobic surfaces in a durable, low-cost, easy-fabrication manner. Here, we report an intelligent candle soot-based photothermal surface (PDMS/CS60@PDMS/Al) that can utilize sunlight illumination to achieve the multi-abilities of anti-icing, de-icing, and self-cleaning. Our method lies in the construction of hierarchical micro/nanostructures by depositing photothermal candle soot nanoparticles, which endow the surface with superior superhydrophobicity and excellent photothermal performance. The underlying mechanism is exploited by establishing the heat transfer model between the droplets and the cooled surface. We believe that the smart PDMS/CS60@PDMS/Al developed in this work could provide a feasible strategy to design intelligent engineering surfaces for enhanced anti-icing/de-icing.
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Afandi, Mas Aly, Sevia Indah Purnama, Gunawan Wibisono, Bagas Adriansyah, and Lutvi Tri Oktaviana. "Pemberdayaan Pelaku Usaha Hidroponik Desa Berkoh Melalui Peningkatan Efektifitas Pembibitan." Madani : Indonesian Journal of Civil Society 7, no. 1 (2025): 92–99. https://doi.org/10.35970/madani.v7i1.2484.
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Hydroponic entrepreneurs are one of the business sectors affected by extreme climate change in Indonesia. The main problem caused by extreme climate change is the uncertain seeding time. Buyers such as restaurants need a supply of fresh vegetables at a specific time. Uncertain seeding due to extreme weather makes farmers unable to supply fresh vegetables at the specified time. The community service that has been carried out aims to apply artificial lighting technology to speed up the 2-5 day seeding process by vegetable farmers. The community service carried out uses an empowerment method to utilize artificial lighting technology during the seeding process. Before using this technology, farmers needed 10-15 days depending on the sunlight conditions during that period. Based on the activities that have been carried out, artificial lighting technology can provide a consistent seeding time of 8-10 days. The results of the community service show that there has been an increase in empowerment among farmers in Berkoh village.