Artículos de revistas: "GREEN CIRCUIT"

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Carmo, Andréa de Araújo do y Kelly Fernanda de Sousa Santos. "Transforming the University into an Environmental Space". IOP Conference Series: Earth and Environmental Science 1194, n.º 1 (1 de julio de 2023): 012034. http://dx.doi.org/10.1088/1755-1315/1194/1/012034.

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Abstract The Environmental Management Superintendence of the Maranhão State University, which works its Environmental Management System through the Environmental Agenda in Public Administration, education for sustainability is being developed continuously and based on A3P since 2015, in all its six axes. In the axis, Awareness and Training of Servants, the opportunity arises to raise awareness environmental issues not only the academic community, but also society as a whole. Through the development of the Green Room Circuit Project, which has been under development since 2018 at the university, the objective was to describe the actions carried out in the year 2021 and to analyze the environmental perceptions of the public after remotely participating in the Green Room Circuit at the Paulo VI Campus. The Circuit consists of five dynamic and successive stages, where lectures corresponding to the contents that would be worked on in each stage were remotely applied. In 2021, due to the pandemic, the Green Room Circuit returned to activities in May, remotely. Fourteen circuits were carried out during the period from May to December, between the different levels of education, 29% of the elementary level, 64% of the secondary level and 7% of the technical level. The activities developed were thematic lectures on: composting, sustainable actions, fungi, agroecological trails, conservation of snakes, mammals and endangered animals. From the public, 580 visitors participated, being 97% students and 3% teachers. The Green Room Circuit on the Paulo VI Campus, education schools in the state of Maranhão has gained an alternative place to know and experience environmental education in an articulated way beyond the classroom, as well as, in the approximation and interaction between basic and higher education system.

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Zhang, Feng Ying y Yun Hua Gao. "Study on Green Gas Data Detection System". Advanced Materials Research 722 (julio de 2013): 322–27. http://dx.doi.org/10.4028/www.scientific.net/amr.722.322.

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This paper describes a wireless gas data detection system, based on CC1010 MCU as the core controller design measurement circuit of indoor air quality. IF in the air pollutants such as smokes and doors, TGS gas sensor sensitive to perceived pollutants transferred to the receiving device through the wireless function after CC1010 MCU treatment analysis. The system has the function of wireless data transmission, small size, high sensitivity, good stability, low cost, long life and other advantages of the peripheral circuits required little devices can be widely used in enclosed spaces such as indoor, automobile air pollution detection.

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Bastos, A. R. N., A. Shahpari, E. Rodríguez-Castellón, M. Lima, P. S. André y R. A. S. Ferreira. "Green photonics integrated circuit for NGOA coherent receivers". Optics & Laser Technology 115 (julio de 2019): 222–28. http://dx.doi.org/10.1016/j.optlastec.2019.02.018.

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Marinova, Galia y Zdravka Tchobanova. "Circuit Design for Green Communications – Methods, Tools and Examples". Spring 2017 5, n.º 2 (1 de mayo de 2017): 1–11. http://dx.doi.org/10.33107/ijbte.2017.5.2.01.

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The paper makes an overview of the existing methods applied for circuit design with low power consumption objective. It considers Computer-Aided Design (CAD) tools and modules for power consumption estimation at the design stage. For analog and mixed analog-digital circuit design, the power estimation options in ORCAD Design Suit with PSpice and Analog Filter Wizard are studied. For digital communication systems the study covers the power estimation, analysis and optimization in ISE and Vivado systems, Xilinx Power Estimator (XPE) tool and spreadsheet, the XPower Analyzer, as well as similar tools proposed by ALTERA - PowerPlay Early Power Estimator and QUARTUS II Power Play Power Analyzer. Two examples are developed: Power consumption estimation of a Universal Software Radio Peripheral (USRP)-based communication system design, based on datasheets and software energy monitoring tools, and power consumption estimation of a Kasami pseudo-random sequence generator circuit design on FPGA using Vivado.

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Wan, Lin Sheng, Shu Sheng Yang, Li Fu Zhao y Hong Chao Li. "The Technology Progress and Development of APT Green Smelting in China". Advanced Materials Research 550-553 (julio de 2012): 682–86. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.682.

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In the paper, the four core technologies "low cost and efficient decomposition," "APT property control", "fuzzy exchange and super desorption," "liquid、gas efficient closed-circuit" in Zhangyuan Tungsten Co.,Ltd in the past 20 years are elaborated in all aspects，and the research of wolframite and scheelite closed-circuit smelting process and zero emission technology are also introduced

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Hower, Haisen, Tamrin, Filli Pratama y Hersyamsi. "Performance of primrose willow (Ludwigia peruviana) as a photosensitizer in dye-sensitized solar cell (DSSC)". IOP Conference Series: Earth and Environmental Science 1025, n.º 1 (1 de mayo de 2022): 012015. http://dx.doi.org/10.1088/1755-1315/1025/1/012015.

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Abstract Natural dyes have been extracted from leaves (green) and flowers (yellow) of primrose willow (Ludwigia peruviana) and were used as a photosensitizer of dye-sensitized solar cell (DSSC). The result of this research showed that absorption peaks of leaf extract were located at 420nm and 665nm. Open-circuit voltage, short-circuit current, and power conversion efficiency of natural green materials were obtained at 580mV, 0.0067mA, and 0.52%, respectively. Bandgap, absorbance coefficient and field factor values were around 2.96eV and 1.87eV, 2.58k.m-1 and 1.63k.m-1 and 0.2196, respectively. However, absorption peak of flower extract was located at 450nm. Open-circuit voltage, short-circuit current, and power conversion efficiency of flowers were obtained at 466mV, 0.0089mA, and 0.488%, respectively. Bandgap, absorbance coefficient, and field factor values were discovered at 2.76eV, 2.41 k.m-1, 0.1722 respectively. To sum up, primrose willow has a potential as a source of DSSC photosensitizer. Its rapid growth will become a prospective source of natural dye.

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Kwon, Oh-Sung, Jin-Hyo Kim y Jung-Hwa Ra. "Landscape Ecological Analysis of Green Network in Urban Area Using Circuit Theory and Least-Cost Path". Land 10, n.º 8 (13 de agosto de 2021): 847. http://dx.doi.org/10.3390/land10080847.

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Quantitative securing of green space in already developed cities has many practical limitations due to socio-economic limitations. Currently, South Korea is planning a green network to secure and inject effective green space, but it is difficult to reflect it in the actual space plan due to the abstract plan. This study utilizes circuit theory and least-cost path methods for presenting a green network that is objectified and applicable to spatial planning. First, an analysis of the Least-cost Path revealed 69 least-cost paths between 43 core green areas of the study site. Most least-cost paths have been identified as passing through small green areas and streams in the city. Using the circuit theory, it was also possible to distinguish areas other than least-cost paths from areas with high potential for development, areas where target species are concentrated within corridors. In particular, areas with relatively high green network improvement effects were derived within and around corridors. This study is most significant in establishing and evaluating existing urban green networks, overcoming the limitations discussed at the linear level and expanding to the area level. To increase the utilization of this study in the future, field surveys and monitoring studies on target species need to be supplemented.

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Shao, Z., A. C. Puche, E. Kiyokage, G. Szabo y M. T. Shipley. "Two GABAergic Intraglomerular Circuits Differentially Regulate Tonic and Phasic Presynaptic Inhibition of Olfactory Nerve Terminals". Journal of Neurophysiology 101, n.º 4 (abril de 2009): 1988–2001. http://dx.doi.org/10.1152/jn.91116.2008.

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Olfactory nerve axons terminate in olfactory bulb glomeruli forming excitatory synapses onto the dendrites of mitral/tufted (M/T) and juxtaglomerular cells, including external tufted (ET) and periglomerular (PG) cells. PG cells are heterogeneous in neurochemical expression and synaptic organization. We used a line of mice expressing green fluorescent protein under the control of the glutamic acid decarboxylase 65-kDa gene (GAD65+) promoter to characterize a neurochemically identified subpopulation of PG cells by whole cell recording and subsequent morphological reconstruction. GAD65+ GABAergic PG cells form two functionally distinct populations: 33% are driven by monosynaptic olfactory nerve (ON) input (ON-driven PG cells), the remaining 67% receive their strongest drive from an ON→ET→PG circuit with no or weak monosynaptic ON input (ET-driven PG cells). In response to ON stimulation, ON-driven PG cells exhibit paired-pulse depression (PPD), which is partially reversed by GABAB receptor antagonists. The ON→ET→PG circuit exhibits phasic GABAB-R-independent PPD. ON input to both circuits is under tonic GABAB-R-dependent inhibition. We hypothesize that this tonic GABABR-dependent presynaptic inhibition of olfactory nerve terminals is due to autonomous bursting of ET cells in the ON→ET→PG circuit, which drives tonic spontaneous GABA release from ET-driven PG cells. Both circuits likely produce tonic and phasic postsynaptic inhibition of other intraglomerular targets. Thus olfactory bulb glomeruli contain at least two functionally distinct GABAergic circuits that may play different roles in olfactory coding.

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Shi, Xuemin y Mingzhou Qin. "Research on the Optimization of Regional Green Infrastructure Network". Sustainability 10, n.º 12 (6 de diciembre de 2018): 4649. http://dx.doi.org/10.3390/su10124649.

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With the rapid rate of urbanization, green infrastructure land is increasingly being converted to urban construction land, and the fragmentation of regional green infrastructure (GI) networks is intensifying. The connectivity of a GI network is of paramount importance for maintaining both regional biodiversity and regional ecosystem service capacity, among others. In this paper, an innovative approach to planning a GI network is presented. The proposed approach is based on the Morphological Spatial Pattern Analysis (MSPA) method, minimum path method, and circuit theory. Using the Zhengzhou–Kaifeng metropolitan area in China as a case study, we argue that the combination of the MSPA method and circuit theory can more fully and comprehensively identify the components of a GI network and its key areas. The methodology consists of three steps: (i) Identifying the cores and bridges of the GI by the MSPA method based on land use data, followed by determining the hubs of the GI network by assessing the connectivity of the core area; (ii) establishing potential connecting corridors between hubs by the minimum path method; (iii) identifying the “pinch point” area of the potential connecting corridors based on current density by applying circuit theory. This approach not only makes identification of the “hubs” and “links” in the green infrastructure network more scientific and comprehensive, but it also further identifies “pinch point” areas of the connecting corridors that require priority protection or recovery. The research results can be used as a practical reference for urban planners when planning urban land use.

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Hou, Jue, Minsu Liu, Huacheng Zhang, Yanlin Song, Xuchuan Jiang, Aibing Yu, Lei Jiang y Bin Su. "Healable green hydrogen bonded networks for circuit repair, wearable sensor and flexible electronic devices". Journal of Materials Chemistry A 5, n.º 25 (2017): 13138–44. http://dx.doi.org/10.1039/c7ta03100a.

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Hou, Bo, Yuljae Cho, Byung-Sung Kim, Docheon Ahn, Sanghyo Lee, Jong Bae Park, Young-Woo Lee et al. "Red green blue emissive lead sulfide quantum dots: heterogeneous synthesis and applications". Journal of Materials Chemistry C 5, n.º 15 (2017): 3692–98. http://dx.doi.org/10.1039/c7tc00576h.

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12

Sun, Zhuangzhi, Lu Yang, Sicheng Liu, Jintao Zhao, Zhiwei Hu y Wenlong Song. "A Green Triboelectric Nano-Generator Composite of Degradable Cellulose, Piezoelectric Polymers of PVDF/PA6, and Nanoparticles of BaTiO3". Sensors 20, n.º 2 (16 de enero de 2020): 506. http://dx.doi.org/10.3390/s20020506.

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In this paper, a kind of green triboelectric nano-generator based on natural degradable cellulose is proposed. Different kinds of regenerated cellulose composite layers are prepared by a blending doping method, and then assembled with poly(tetrafluoroethylene) (PTFE) thin films to form tribioelectric nanogenerator (TENG). The results show that the open circuit output voltage and the short circuit output current using a pure cellulose membrane is 7.925 V and 1.095 μA. After adding a certain amount of polyamide (PA6)/polyvinylidene fluoride (PVDF)/barium titanate (BaTiO3), the open circuit output voltage peak and the peak short circuit output current increases by 254.43% (to 20.155 V) and 548.04% (to 6.001 μA). The surface morphology, elemental composition and functional group of different cellulose layers are characterized by Scanning Electronic Microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and tested by the electrochemical analyze. Moreover, after multiple assembly and rectification processing, the electrical output performance shows that the peak value of open-circuit output voltage and the peak value of short circuit output current increases by 132.06% and 116.13%. Within 500 s of the charge-discharge test, the single peak charge reached 3.114 V, and the two peak charges reached 3.840 V. The results demonstrate that the nano-generator based on cellulose showed good stability and reliability, and the application and development of natural biomaterials represented by cellulose are greatly promoted in miniature electronic sensing area.

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Bai, Qiu Chan y Chun Xia Jin. "The Control-Circuit Design of Green-Lighting System Based on LonWorks". Applied Mechanics and Materials 685 (octubre de 2014): 298–301. http://dx.doi.org/10.4028/www.scientific.net/amm.685.298.

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According to energy-saving requirements of traffic lights at present, this paper proposes a green-lighting control system based on Lonworks, which adopts the control node based on host. The paper demonstrates the system structure, the circuit design of nodes. The design can automatically adjust the brightness of Street Lamp according to the weather changes and implement the temperature detection and the alarm of troubleshoot. The designed system can largely save the people resources and power resources, and can reduce light pollution. So it has a strong practical significance.

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Zhang, Zhi Yuan y Fu Shen Zhang. "A Green Process for Copper Recovery from Waste Printed Circuit Boards". Advanced Materials Research 878 (enero de 2014): 374–79. http://dx.doi.org/10.4028/www.scientific.net/amr.878.374.

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In the present study, a green process for cuprous chloride synthesis from waste printed circuit boards (PCBs) was developed. High value-added cuprous chloride (98.7% purity) was obtained by treating metallic particles of waste PCBs with solution of cupric sulfate and sodium chloride. Typical noble metal (Pd) was dissolved by forming a stable chloride complex during the synthesis process as Cu2+ played the role of oxidant or concentrated in the residue. Under the optimum condition (VNaCl/mCuSO4 ratio = 6, [C/[Cu2+] mole ratio = 1.05, treatment time = 30 min, operation temperature = 60 °C), yield of cuprous chloride was 74.0% and approximately 98.5% of the copper could be recovered. It is believed that the process proposed is effective and practical for Cu recovery from waste PCBs.

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15

Wang, D. Y., Y. Chang, Y. X. Wang, Q. Zhang y Z. G. Yang. "Green water-based silver nanoplate conductive ink for flexible printed circuit". Materials Technology 31, n.º 1 (2 de enero de 2016): 32–37. http://dx.doi.org/10.1179/1753555715y.0000000023.

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Wan, Jiafu, Chin-Feng Lai, Shiwen Mao, Eugenio Villar y Subhas Mukhopadhyay. "Innovative circuit and system design methodologies for green cyber-physical systems". Microprocessors and Microsystems 39, n.º 8 (noviembre de 2015): 1231–33. http://dx.doi.org/10.1016/j.micpro.2015.11.010.

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17

Wuryanti, Sri. "The performance of solar cells using chlorophyll dye from Syzygium paniculatum". Clean Energy 5, n.º 3 (1 de agosto de 2021): 433–40. http://dx.doi.org/10.1093/ce/zkab022.

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Abstract In this study, analysis was performed of the macro characterization of solar cells with chlorophyll dye from Syzygium paniculatum, using scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis. Solar cells based on titanium dioxide (TiO2) nanomaterial and chlorophyll dye from S. paniculatum can increase efficiency due to flavonoids and batulinic acid content. Photoanode TiO2 is one of the essential factors determining the photovoltaic properties of dye-sensitized solar cells (DSSCs) and shade, which broadens the absorption spectrum. Furthermore, the method used in this research involved varying the colour of the S. paniculatum leaves, namely red (SP-Red), green (SP-Green) and a red–green mix (SP-Mix). From a macro analysis, SEM observations resulted in agglomerated and aggregated TiO2-polyethylene glycol (PEG)-dye layers with irregular shapes. EDX observation resulted in a peak in Ti at 5 keV and all constituents were detected with an O:Ti ratio of 3.47:1 for FTO-TiO2/PEG using SP-Green. Measurement of voltage-current (IV) using a digital multimeter indicated that the best occurred in the DSSC with SP-Green, resulting in a short-circuit current density (Isc) of 0.0047 mA/cm2, an open-circuit voltage (Voc) of 0.432 V, a charging factor (FF) of 0.749 and an efficiency (η) of 3.724%.

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18

Yusran y A. D. Armanda. "Design and testing of 1 phase semi-controlled rectifier circuit (experiment scale): a part of green laboratory project". IOP Conference Series: Earth and Environmental Science 926, n.º 1 (1 de noviembre de 2021): 012045. http://dx.doi.org/10.1088/1755-1315/926/1/012045.

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Abstract This paper discussed design and testing of one (1) phase semi-controlled full wave rectifier circuit (experiment scale) as a part of green laboratory project. The research method was divided by two stages: design and testing. The design stage included: component selection and calculation, conceptual design and circuit physical implementation. The three main components included 2 diodes, 2 thyristors (SCR), resistive (R) and inductive (L) load with varying values. The testing stage was physical rectifier circuit operation with R (220; 580; 1,500 ohm) and R-L (L=2.37 H) load. The voltage waveform, voltage and current were observed during this stage. The testing results (voltage and current) in rms value were compared with theoretical calculation for validation. The testing results showed that the rectifier circuit working optimally. The testing results were differed by small percentage with theoretical calculation. The output voltage was differed by 1.085%. The output current for R and R-L load were differed by 4.590% and 6.457%, respectively.

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Sukmana, Septian Enggar, Nurul Anisa Sri Winarsih y Akmaludin Akbar. "Sliding Modes Strategy Implementation for Controlling Nutrition in Hydroponics Based IoT". Journal of Applied Intelligent System 4, n.º 2 (6 de marzo de 2020): 48–56. http://dx.doi.org/10.33633/jais.v4i2.2767.

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To reduce unconsistenly of nutrition sensor data, an analysis which consists of mathemathical model and new control technique is required. In this paper, a simulation of smart garden is performed to simulate a smart green campus. However, the problem appears in this activity, the data form sensor is not consistent and it may harm the plant because sometime the plant may get a much nutrition and another time the plant will get less nutrition. Our propose is on the sensor circuit, we use additional circuit to our TDS meter so the data is normalized using this circuit.

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20

Fang, Fang y Xiao Feng Yu. "Design of Green Cabling System". Advanced Materials Research 971-973 (junio de 2014): 2084–87. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.2084.

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The idea of green cabling system includes energy saving and environmental protection. Green cabling system design and installation for energy conservation to reduce energy consumption is significant, and this is also the need for future cabling system an important factor in thinking and direction. Rational design and display cabinet to avoid hot and cold air short circuit. Route planning and reasonable layout, high-density pre-connected wiring products, can significantly reduce the wiring space. So that we can increase the cooling effect of air conditioning and reduce the electricity consumption. Meanwhile, green cabling system should choose Environmental protection cabling products. Driven by three factors (the standards, user needs and technological progress), the concept of Green Cabling technology evolved into the cabling industry trends. With related international, national standards and technology development, Green cabling system design is the focus of this paper.

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BIRGET, JEAN-CAMILLE. "THE THOMPSON–HIGMAN MONOIDS Mk,i: THE ${\mathcal J}$-ORDER, THE ${\mathcal D}$-RELATION, AND THEIR COMPLEXITY". International Journal of Algebra and Computation 21, n.º 01n02 (febrero de 2011): 1–34. http://dx.doi.org/10.1142/s0218196711006066.

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The Thompson–Higman groups Gk,i have a natural generalization to monoids, called Mk,i, and inverse monoids, called Invk,i. We study some structural features of Mk,i and Invk,i and investigate the computational complexity of related decision problems. The main interest of these monoids is their close connection with circuits and circuit complexity. The maximal subgroups of Mk,1 and Invk,1 are isomorphic to the groups Gk,j (1 ≤ j ≤ k - 1); so we rediscover all the Thompson–Higman groups within Mk,1. Deciding the Green relations [Formula: see text] and [Formula: see text] of Mk,1, when the inputs are words over a finite generating set of Mk,1, is in P. When a circuit-like generating set is used for Mk,1 then deciding [Formula: see text] is coDP-complete (where DP is the complexity class consisting of differences of sets in NP). The multiplier search problem for [Formula: see text] is xNPsearch-complete, whereas the multiplier search problems of [Formula: see text] and [Formula: see text] are not in xNPsearch unless NP = coNP. The class of search problems xNPsearch is introduced as a slight generalization of NPsearch. Deciding [Formula: see text] for Mk,1 when the inputs are words over a circuit-like generating set, is ⊕k-1• NP -complete; for any h ≥ 2, ⊕h•NP is a modular counting complexity class, whose verification problems are in NP. Related problems for partial circuits are the image size problem (which is # • NP-complete), and the image size modulo h problem (which is ⊕h•NP-complete). For Invk,1 over a circuit-like generating set, deciding [Formula: see text] is ⊕k-1P-complete. It is interesting that the little known complexity classes coDP and ⊕k-1•NP play a central role in Mk,1.

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Xu, An Tao, Bing Luo, Fan Zhang, Fu Jin y Yang Yang Liu. "A Research on the Protective Performance of Green Organic Composite Coating on Vehicle Equipment". Applied Mechanics and Materials 325-326 (junio de 2013): 79–82. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.79.

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By adopting coating damage simulation research method with open circuit potential and electrochemical impedance spectroscopy, the influence of different damage levels of green organic composite coating to its protective performance has been studied. The research found that the variation of open circuit potential partly reflected the damage level of the coating. When K is less than or equal to 0.04, the coating still has favorable protective performance, while K is higher than 16, the protective performance of the coating is basically unavailable, but when K falls in between, the protective performance of the coating is fair good.

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Al-Muqorrobin, Muhammad Izzuddin y Anna Nur Nazzilah Chamim. "Penyiraman Otomatis Pada Tanaman Atap Rumput Gajah". Semesta Teknika 18, n.º 1 (9 de enero de 2016): 83–93. http://dx.doi.org/10.18196/st.v18i1.709.

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Watering is an important step to mantain the condition of a plant, but most people dont know how good watering is, like the time of watering, watering composition that match with the plant. Almost all of green roof in any type is not using automatic system but manually watering it, that make watering the green roof become very hard to do. In this case, many people think that having a green roof is very difficult, especially in maintain it. From this problem, writer want to convince people that having a green roof is not as difficult as it look. With combining the watering methode, green roof, and surface irrigation, then writer want to make something that can help people to mantain plant especially green roof plant. The objective of this papers is to make and to know how Green Roof Automatic Watering System’s work. Using Atmega16 chip, writer made an electronic circuit that programmed by C language that will automatically watering the plant if the sensor detect the percantage above 10%. The sensor is a couple of bar that transmit voltage in between the bar past through the soil. The sensor then will transmit the data to Chip to be processed, and if they meet the condition, the IC MOC3021 will be activated, then the AC Current will automatically charge the load (pump). This electronic circuit then applied to a prototype of extensive green roof with 30’ which is a diagonal. Layering of the green roof from the first to the last is waterproof, cubical fern root (to maintain water cyclus), soil, and the plant (especially grass type). From the application, writer can make a conclusion that this green roof automatic watering system work well and can stand up to 1 month use.

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Jiang, Ping, Yu Xin Song, Bi Qin Chen, Megan Harney y Michael B. Korzenski. "Environmentally Benign Solution for Recycling Electronic Waste Using the Principles of Green Chemistry". Advanced Materials Research 878 (enero de 2014): 406–12. http://dx.doi.org/10.4028/www.scientific.net/amr.878.406.

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In electronic waste recycling industry, printed wire boards (PWBs)/integrated chips (ICs) recycling is one of the most challenge tasks due to the fact that PWBs/ICs are diverse and complex in terms of materials and components makeup,as well as the original equipment manufacturing processes. In this paper, we will present environmental benign solution to recover valuable metals from PWB and integrated circuit chips (ICs) dissembled from waste PWB, based on green chemistry methodologies. We will demonstrate that the process/chemistry can selectively separate and recover precious metals from base metals. The 95%-99% recovery rate of precious metals can be achieved from the recycling of PWB and integrated circuit chips.

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Zheng, Liang y Farzana Akter. "Power Quality Control System of High-Power-Density Switching Power Supply for Green Environment". Mathematical Problems in Engineering 2022 (16 de septiembre de 2022): 1–11. http://dx.doi.org/10.1155/2022/9692974.

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There is higher harmonics and electromagnetic interference caused by high-power-density switching power supply during high-frequency and normal operations which affects power quality of switching power supply and also impacts the environment. To solve this problem, this paper proposes a dual digital signal processor (DSP) controller suitable for unified power quality regulators and designs high-power-density switching power supply control system for promoting green environment. The overall structure of the system is divided into two parts, the power main circuit and the control circuit. In the main power circuit, the electromagnetic interference (EMI) filter is used to filter the input AC voltage and convert it into a stable DC voltage. A high-frequency inverter is used to invert the DC voltage into a high-frequency AC voltage to achieve harmonic control and reactive power compensation. In the control circuit, dual DSP controller is used to improve real-time detection, control of the output voltage, and current and driver temperature of the high-power-density switching power supply, while high-precision analysis and processing system collect different information and then achieve the power quality control of the switching power supply based on system software to keep this environment green. The experimental results suggest that the harmonic content of the experimental objects controlled by the system is reduced by 16.7% compared with the existing power quality control and the absolute error of the system is less than 0.02 V which improves the de-noising performance. The power generation systems require that the consumption of natural resources and renewable energy solutions can assist in saving the natural resources.

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Chao, Yan Pu, Hao Yi, Hui Cen y Yao Hui Li. "Formation mechanism analysis and experimental investigation of single-step printing customized circuits by liquid-metal direct writing". Mechanical Sciences 12, n.º 1 (11 de febrero de 2021): 143–54. http://dx.doi.org/10.5194/ms-12-143-2021.

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Abstract. Liquid-metal direct writing is a cost-effective and green technology, which is very promising for the customized fabrication of flexible circuits and functional devices. However, owing to the high surface tension of metal ink, the printed circuits are prone to intermittent outflow, large forming size error, and unstable forming. The smooth flowing and conveying of liquid-metal ink are still huge challenges that need significant attention. Herein, the force mechanism of liquid-metal ink transported by ball rotation and translation of the printing head was analysed, and the wetting characteristics of liquid metal on the surface of different substrates and its influence on forming morphology were investigated. The stable output printing of gallium indium alloy (GaIn24.5) liquid metal was realized. The changing characteristics of the shape and size of the liquid-metal circuits formed under different printing speeds and writing pressures were experimentally studied. The effective process window for obtaining the best circuit quality was established. Based on this, a flexible printed circuit board and functional electronic pattern were successfully printed under the writing pressure W=1 N and printing speed F800 mm min−1. The printed lines of GaIn24.5 exhibited a smooth surface, uniform width, small size error, and ability to connect electronic components and conduct electricity. This research proposes a new technical approach for customized printing of personalized electronic circuits and has important application prospects in the future.

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Grout, Ian A., Muhaned Zaidi, Karel L. Sterckx y Abu Khari Bin A'ain. "RGB LED Driver Circuit Design for an Optical Fiber Sensor System". ECTI Transactions on Computer and Information Technology (ECTI-CIT) 11, n.º 2 (11 de diciembre de 2017): 163–77. http://dx.doi.org/10.37936/ecti-cit.2017112.63707.

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In this paper, the design of a programmable mixed-signal electronic circuit to control the light output of a red-green-blue (RGB) light emitting diode (LED) to be used in an optical fiber sensor system is presented and discussed. The LED is to be used as a light transmitter (light source) within the sensor system. The output of each LED color is to be independently controlled using either a d.c. current or a pulse width modulation (PWM) encoded current. The idea for, and architecture of, the mixed-signal electronic circuit design is considered as both a discrete implementation using off-the-shelf components and the concept for an application specific integrated circuit (ASIC) solution using a 0.35 µm complementary metal oxide semiconductor (CMOS) fabrication process. In this paper, the design operation principles, circuit architecture, simulation results and hardware requirements for this LED driver circuit are considered.

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Sun, Tai Ping, Jia Hao Li y Kai Yan Li. "Automatic Spectrum Control System Design and Implementation for RGB Light Emitting Diode". Applied Mechanics and Materials 313-314 (marzo de 2013): 539–43. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.539.

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This paper designs an automatic spectrum control circuit when the temperature change the LED spectrum can maintain stably. Automatic spectrum control circuit has two control modes, one kind for red LED another kind for green and blue LED. When temperature increases that the LED spectrum are all toward long wavelength shift. When LED current increases, the R-LED spectrum to the long wavelength shift, the GB-LED spectrum to the short wavelength shift, so at R-LED is to reduce the current as the automatic spectrum control circuit and the GB-LED is to increase the current as the automatic spectrum control circuit. It is confirmed that the proposed system provides stable spectrum within a temperature range of 10°C at R-LED and a temperature range of 70°C at GB-LED.

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29

Huang, Yin Hua y Shi Qi Zhao. "Green Design for Multi-Purpose Dovetail Groove Board". Advanced Materials Research 338 (septiembre de 2011): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amr.338.3.

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In order to make design for board to achieve the miniaturization, multi-purpose, recycling; and to pursue the energy conservation, saving materials, little waste, the closed circuit in the technology, it is necessary to carry on the research of green design for board. Based on analyzing requirement of the market adequately, green design for multi-purpose dovetail groove board is presented. The research primary including: Firstly, choice of material for green design of board; Secondly, design for disassembly of board; Thirdly, design for recycling & recovering of board; finally, applications of board. The research has certain theory value and the practice significance.

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30

Lee, Carol. "Electrical - Poetic Fragment #1". Cultural and Pedagogical Inquiry 14, n.º 1 (17 de diciembre de 2022): 8. http://dx.doi.org/10.18733/cpi29644.

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A poetic fragment that plays with the notion of touch as a circuit that touches back and creates feedback from which one learns, also accompanied by a photograph by Chandan Suman entitled Green and Black Light.

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31

Cheng, Chun-An, Chien-Hsuan Chang, Hung-Liang Cheng, En-Chih Chang, You-Ruei Lin y Long-Fu Lan. "A Novel Light-Emitting Diode Streetlight Driver Circuit Applied to a Direct Current-Input Voltage Source". Sustainability 15, n.º 14 (12 de julio de 2023): 10934. http://dx.doi.org/10.3390/su151410934.

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With the global advocacy of green lighting and the urgent need for energy saving and carbon reduction, more and more street lighting applications have entered the era of being replaced by light-emitting diode (LED) lighting sources. This paper presents a new LED streetlight driving circuit applied to a direct current (DC)-input voltage source, which consists of a buck converter combined with a flyback converter to reduce the number of circuit components required and to recover the leakage energy of the transformer to improve energy conversion efficiency. In addition, this study also completed the analysis of the operational principle of the new LED streetlight driving circuit, and developed a prototype LED streetlight driver with DC-input voltage of 48V and output power of 72 W (36 V/2 A). Finally, the measurement results of the prototype circuit show that the output voltage ripple rate was less than 15%, the output current ripple rate was less than 6%, and the circuit efficiency was as high as 91%.

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32

Tengchan, Zeng, Ma Zhen, Wang Gongpu y Zhong Zhangdui. "Green circuit design for battery-free sensors in cloud radio access network". China Communications 12, n.º 11 (noviembre de 2015): 1–11. http://dx.doi.org/10.1109/cc.2015.7365884.

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33

Zhu, P., Y. Chen, L. Y. Wang y M. Zhou. "Treatment of waste printed circuit board by green solvent using ionic liquid". Waste Management 32, n.º 10 (octubre de 2012): 1914–18. http://dx.doi.org/10.1016/j.wasman.2012.05.025.

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34

Cardinale, M., P. J. Cungi y E. Meaudre. "Green plasma and a blocked CRRT circuit due to drug-induced hyperlipidemia". Intensive Care Medicine 45, n.º 9 (19 de marzo de 2019): 1305–6. http://dx.doi.org/10.1007/s00134-019-05592-3.

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35

Ma, Chuan, Shogo Kumagai, Yuko Saito, Tomohito Kameda y Toshiaki Yoshioka. "Correction: Enhanced production of phenol and debromination by co-pyrolysis of the non-metallic fraction of printed circuit boards and waste tires". Green Chemistry 24, n.º 3 (2022): 1373–74. http://dx.doi.org/10.1039/d1gc90136b.

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Correction for ‘Enhanced production of phenol and debromination by co-pyrolysis of the non-metallic fraction of printed circuit boards and waste tires’ by Chuan Ma et al., Green Chem., 2021, 23, 6392–6404, DOI: 10.1039/D1GC01176F.

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36

Choi, Jun, Woosung Lee y Jae P. Kim. "Broad-absorbing tetrabenzocorrolazine green photosensitizer for the enhanced conversion efficiency in dye-sensitized solar cells". Journal of Porphyrins and Phthalocyanines 20, n.º 07 (julio de 2016): 804–12. http://dx.doi.org/10.1142/s108842461650098x.

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Novel tetrabenzocorrolazine green photosensitizer was designed and synthesized to enhance the solar energy-to-electricity conversion efficiency of dye-sensitized solar cells. This near-infrared absorbing dye exhibited superior short-circuit photocurrent density induced from the additional absorption compared to the phthalocyanine dye commonly applied as a photosensitizer covering the near-infrared region in dye-sensitized solar cells. The introduction of bulky peripheral groups and axial substituents to the novel dye led to the increase of open-circuit photovoltage. As a result, the novel tetrabenzocorrolazine dye achieved a solar energy-to-electricity conversion efficiency of 3.78% under AM 1.5G conditions which was much higher than that of the phthalocyanine reference dye.

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37

Willcox, Timothy W. "Vacuum-Assisted Venous Drainage: To Air or Not To Air, That Is the Question. Has the Bubble Burst?" Journal of ExtraCorporeal Technology 34, n.º 1 (marzo de 2002): 24–28. http://dx.doi.org/10.1051/ject/200234124.

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Assisted venous drainage is a recent development in cardiopulmonary bypass (CPB) and was introduced to overcome limitations in achieving adequate blood flow through small diameter cannulas used in minimally invasive surgery. The more common application, vacuum assisted venous drainage (VAVD) is now widely used in both adult and pediatric CPB. During a clinical investigation into pharmacological cerebral protection at Green Lane Hospital, we repeatedly observed evidence of emboli in the right common carotid artery following both entrainment of air into the venous line, and also, reductions in the blood level of the hard-shell venous reservior. We subsequently embarked upon a series of in vitro experiments designed to identify sources of emboli from the CPB circuit, and to evaluate the ability of CPB circuit components to remove air entrained into the venous line under conditions of both gravity and vacuum assisted venous drainage. Initial experiments revealed design features of certain hard-shell venous reservoirs that generated gaseous emboli. In further studies using adult circuits, entrainment of air into the venous line under conditions of conventional gravity venous drainage resulted in emboli distal to the arterial filter. When these studies were repeated using VAVD, arterial line emboli increased eight to tenfold. Initial experiments with a pediatric circuit showed similar findings. Cerebral emboli during CPB have been positively correlated with increasing neurocognitive deficits. The application of VAVD has been employed clinically without any significant redesign of the components of the CPB circuit. While VAVD may be efficacious in certain scenarios, a thorough understanding of its influence on CPB is essential. Advantages must be balanced against potential hazards. The safe use of VAVD necessitates refinement of perfusion techniques, judicious choice of application, and further development of the CPB circuit.

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38

Liu, Jingping, Cheng Yang, Haoyi Wu, Ziyin Lin, Zhexu Zhang, Ronghe Wang, Baohua Li, Feiyu Kang, Lei Shi y Ching Ping Wong. "Future paper based printed circuit boards for green electronics: fabrication and life cycle assessment". Energy Environ. Sci. 7, n.º 11 (2014): 3674–82. http://dx.doi.org/10.1039/c4ee01995d.

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A multilayer printed circuit board (PCB) can be fabricated using commercially available printing paper, which shows comparable functionalities with the conventional organic PCBs but 100 times lower environmental impact.

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39

Jacobs, R. J. "Screen Color and Reading Performance on Closed–Circuit Television". Journal of Visual Impairment & Blindness 84, n.º 10 (diciembre de 1990): 569–72. http://dx.doi.org/10.1177/0145482x9008401022.

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To investigate whether screen color is an important variable in the prescription of CCTV systems, the author measured the visual performance of CCTV users on white, green, and amber screens. When the screen luminance and contrast were equated for each CCTV, the users’ reading performance was unaffected by the screen color. Although some individuals expressed a clear subjective preference or dislike for one color or another, there was no obvious link between the cause of low vision and preference for or aversion to that color.

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40

Wang, Chuan, Lei Shi, Junying Guo y Sufang Liu. "Design of Green Building Energy Consumption Data Acquisition System Based on Biological Nano Sensors". Nanoscience and Nanotechnology Letters 12, n.º 2 (1 de febrero de 2020): 184–95. http://dx.doi.org/10.1166/nnl.2020.3098.

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The traditional energy consumption data acquisition system for green building has low accuracy. Based on biological nano-sensors, the energy consumption data acquisition system for green building is optimized. The original chip of the data acquisition sensor of AD9280 chip is adopted, the sampling circuit of energy data is designed according to the construction of attenuation circuit, and the rs-485 communication interface electricity meter is connected with the data collector reflecting the building energy consumption to complete the system hardware design. The function of the data collector was analyzed and the collection program was designed. The energy consumption data analysis method was designed after the serial port code was converted to complete the software design of the energy consumption data collection system for green buildings. It is found that the designed system solves the problem of "data missing zero" and can effectively eliminate the fault of communication lines. Moreover, when the data volume is 800 bits, the time of the energy consumption data acquisition system is only 2.5 s, which is significantly lower than the other two collection methods, and the collection efficiency is high.

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41

Chen, Kuen-Suan, Feng-Chia Li, Kuei-Kuei Lai y Jung-Mao Lin. "Green Outsourcer Selection Model Based on Confidence Interval of PCI for SMT Process". Sustainability 14, n.º 24 (13 de diciembre de 2022): 16667. http://dx.doi.org/10.3390/su142416667.

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Taiwan’s electronics industry usually outsources most of its important components for production to enhance market competitiveness and operational flexibility. The quality of all component products is important to ensure the quality of the final product. In electronic assembly, printed circuit boards (PCBs) are key components that carry other electronic components to provide a stable circuit working environment. Surface Mounted Technology (SMT) is the mainstream technology in electronic assembly plants. Obviously, good SMT process quality is relatively important to the final product quality. The process capability index (PCI) is the most widely used process quality evaluation tool in the industry. Therefore, this paper used the PCI representing quality as the green outsourcer selection tool for the SMT process, derived the confidence interval of PCI to develop a quality evaluation model of green outsourcers, and considered the model as the green outsourcer selection model. Meanwhile, this model can be provided to enterprises, outsourcers, or suppliers to evaluate and improve the process quality of components to ensure the quality of components and final products. Since the selection model is based on confidence intervals, it can reduce the risk of misjudgment due to sampling error.

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42

Liang, Zi Yi, Xin Nan Qu y Xiang Hui Zhao. "Exploration Based on ZigBee Traffic Signals Area Control System". Applied Mechanics and Materials 135-136 (octubre de 2011): 535–39. http://dx.doi.org/10.4028/www.scientific.net/amm.135-136.535.

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In order to solve the problem of traffic jams, this paper presents a solution about traffic signals area control system based on ZigBee wireless sensor network. The basic idea is to connect the area's traffic lights through ZigBee wireless sensor network according to the traffic flow during a time period where the system located. The command center coordinates and controls the length of the green signal, period and the time of the green signal on all roads through the ZigBee wireless sensor network, so that the motor vehicles which move from corresponding two-way intersections could get through with less red signal. The solution adopts TI's CC2430 RF transceiver chip and analog front-end chip CC2591 and some external circuits to design the hardware circuit of sensor nodes and the central control nodes. Then designs the applications about sensor nodes, central control nodes and management software of control center, which based on the ZigBee protocol stack. Test results show that the performance of the system, such as stability, response speed, could meet the actual demand. It can obviously improve the highway capacity.

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43

Melo, Vinícius, Alexandre Melo, Walbermark Santos, Jussara Fardin y Lucas Encarnação. "Open-Loop Single-Phase Space State Model and Equivalent Circuit of a Non-Conventional Three-Phase Inverter". Electronics 9, n.º 5 (30 de abril de 2020): 744. http://dx.doi.org/10.3390/electronics9050744.

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Recently, many non-conventional three-phase inverters, topologies for green energy source grid-connection systems, and electric drives have been proposed. Simplifying the inverter circuit is crucial to analyze and solve their models in order to design them. The main goal of the study is centered on obtaining a single-phase equivalent circuit and space state model from non-conventional three-phase inverters based on bidirectional direct current–direct current (DC–DC) Buck-Boost topology using isolated gate bipolar transistors (IGBT). From just one phase of the three-phase inverter, the single-phase equivalent circuit was obtained by means of Kirchhoff’s laws. The equivalent circuit operation steps were presented in order to obtain the space state model. Finally, the equivalent circuit was simulated, and experimental results with a 200 W three-phase inverter feeding a resistive, inductive, and capacitive loads were performed to confirm the theoretical and simulation analyses. The results show the state space dynamic behavior variables of single-phase and three-phase models are quite similar. Therefore, it can be concluded that the proposed circuit can be used with property to represent equivalent single-phase models of non-conventional three-phase inverters.

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44

Oktaviani, Wiwin A. y Arrofi Maulana. "Design and Build of 1000 V Joule Thief Inverter by Utilizing Pineapple as an Energy Source". Journal of Robotics and Control (JRC) 3, n.º 1 (19 de agosto de 2021): 55–61. http://dx.doi.org/10.18196/jrc.v3i1.10198.

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The availability of fossil energy-based energy sources is currently depleting and cannot meet the increasing consumption. Therefore, the development of environmentally friendly alternative energy or known as green energy is increasingly being encouraged. One form of green energy that can be utilized, especially in the South Sumatra region, is pineapple. In this paper, the use of pineapple as a raw material for batteries is introduced. The material for making pineapple batteries will affect the amount of battery capacity produced. The pineapple battery capacity will then determine the amount of output voltage generated by the joule thief converter. Apart from the material, the voltage increase in the joule thief converter circuit is also influenced by the source voltage of the pineapple battery, the ferrite core step-up transformer, and the arrangement of the diodes and capacitors in the circuit. The pineapple battery capacity produced in this study is 1209 mAh, the maximum voltage is 4.63 V, the pineapple battery life is 1.0334 hours, and the charging process is 34 minutes. The resulting circuit in this study shows that the maximum output voltage of the joule thief converter is 1531 V, a current of 4.19 mA and the ability to increase the voltage to the source is 300 times.

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45

Fan, Qiang, Xian Song Fu, Yi Li Liu, Ping Juan Niu y Tie Cheng Gao. "A Novel High Efficiency Solution of High Power LED Lighting". Advanced Materials Research 301-303 (julio de 2011): 121–26. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.121.

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High power LED is a kind of ideal green lighting source, which owns longer life, higher efficiency and lower electricity power consumption than incandescent lamps and fluorescent bulbs. Constant current driver is the most key factor for high power LED’s premium properties. Based on the specific chip LM3478, a novel Boost DC/DC converting circuit to drive LED was proposed. The whole circuit structure was simple, and owned high reliability with over current protection. The circuit operates continuous current mode (CCM), with normal supply voltage 12V. The constant output current is 700mA, which can drive two-row LED series, 5 LEDs at least each series. The test results show that the electricity efficiency is up to 93.20% and that the output current deviation is 7.71%. The operating temperature range is -40~+125°C.

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46

Senthil Nayagam, V. y L. Premalatha. "Green Energy Based Coupled Inductor Interleaved Converter with MPPT Technique for BLDC Application". International Journal of Power Electronics and Drive Systems (IJPEDS) 9, n.º 4 (1 de diciembre de 2018): 1725. http://dx.doi.org/10.11591/ijpeds.v9.i4.pp1725-1732.

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This paper presents a high step-up converter with combination of battery and solar energy source application. The proposed green energy source boosted by using coupled inductor interleaved converter. The coupled inductor and voltage double circuit can reach the high voltage gain without more stress on the converter circuit as well as muchchanges in duty cycle. The photo voltaic system maximum output is 12volts it can be varied by changes of irradiation level .The maximum output voltage is tracking by using MPPT and supplies to the coupled inductor interleaved boost converter. The MPPT working based on the P & O algorithm .The output level of the photo voltaic is high then the battery is charging as well as BLDC motor also being driven efficiently.Whenever the irradiation level will be low the output level of the photo voltaic is less than the battery will be charging and then the motor will running by battery power.

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47

P. Genobiagon Jr, Cresencio y Feliciano B. Alagao. "PERFORMANCE OF LOW-COST DUAL CIRCUIT SOLAR ASSISTED CABINET DRYER FOR GREEN BANANA". Journal of Mechanical Engineering Research and Developments 42, n.º 1 (22 de enero de 2019): 42–45. http://dx.doi.org/10.26480/jmerd.01.2019.42.45.

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48

Wilansky, Daniel P. "Recent Developments in Health Law: Civil Rights: Prisoners’ Right to Treatment Information under Pabon v. Wright". Journal of Law, Medicine & Ethics 34, n.º 4 (2006): 831–32. http://dx.doi.org/10.1111/j.1748-720x.2006.00106.x.

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In Pabon v. Wright, the Second Circuit held that the Fourteenth Amendment right to refuse medical treatment contained a corollary right to the information necessary to make an informed decision. Plaintiff, William Pabon, was an inmate at Green Haven Correctional Facility in New York (Green Haven). He named two groups of defendants: his doctors and nurses at Green Haven and his doctors at Dutchess Gastroenterologists, P.C. (Dutchess).In October 1996, a laboratory test indicated that Plaintiff may have contracted Hepatitis C. The Green Haven doctors referred Plaintiff to Dutchess for additional testing, where additional tests confirmed that Plaintiff had Hepatitis C. In July 1997, Plaintiff returned to Dutchess for additional evaluation, and the physicians told him that he must undergo a liver biopsy in order to receive treatment for his condition.

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49

Sanger, Ruddy, Viverdy Memah, Moudy Kambey y Djamii Olii. "Development of Solar Energy Lamp Using Arduino Uno". JURNAL EDUNITRO Jurnal Pendidikan Teknik Elektro 2, n.º 2 (12 de septiembre de 2022): 105–14. http://dx.doi.org/10.53682/edunitro.v2i2.4360.

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This study aims to design an electronic system from solar energy lamps using Arduino Uno and then implement it into a prototype circuit. This solar energy lighting system supports the green energy ecosystem in the implementation of solar cells in the design of cost-effective electronic systems. This automatic solar energy lamp system consists of solar panels and batteries as inputs, LDR and voltage sensors as references and sensors, Arduino Uno and relays as controllers, and LCD and LED lights as output circuits. The implementation results show that solar energy lamps using Arduino Uno can function properly. The solar energy stored in the battery can be used automatically as lighting at night without using electricity from PLN. It can automate the light in the room, eliminating the need to turn them off and on manually.

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HUNG, YU-CHERNG. "COMPLEMENTARY AND DOUBLE-EDGE BASED: A 5-BIT CMOS DIGITAL PULSE-WIDTH MODULATION (PWM) DESIGN WITH MULTIPLE OUTPUTS FOR LED DIMMING APPLICATION". Journal of Circuits, Systems and Computers 23, n.º 02 (febrero de 2014): 1450030. http://dx.doi.org/10.1142/s0218126614500303.

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In this paper, a compact high-precision digital pulse-width modulation (DPWM) CMOS circuit is proposed. The circuit, with multiple output capability, allows brightness control of red, green, and blue (RGB) light emitting diode (LED) lighting. The PWM technique is used for LED dimming control to avoid the problem of color shifting. In this design, complementary concepts and hardware sharing are utilized to achieve a compact architecture and small chip area. A double-edge triggered technique is adopted to enhance the capability of high-speed operation. An experimental chip has been realized by using TSMC 0.18-μm CMOS technology. Simulation results show that the proposed 5-bit PWM circuit can operate at 200 MHz, 32 duty cycles adjustable, and within only 1-ns time error. The chip's measured results show that the new PWM circuit with three output channels works successfully at a supply voltage of 1.8-V, clock of 50-MHz, and resolution of 32 adjustable per channel. The core area of the chip is only 280 × 52.5 μm2.

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