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    Wyświetlanie 1-6 z 6
    Tytuł:
    Simultaneous removal of SO2 and NOx from sintering flue gas using ammonia-Fe(II)EDTA combined with electrolytic regeneration
    Autorzy:
    Liang, Y.
    Yao, X.
    Quin, L.
    Chen, W.
    Han, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/208117.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    ammonia
    desulfurization
    flue gases
    nitrogen oxides
    nitrogen removal
    sintering sulfur dioxide
    amoniak
    odsiarczanie
    gazy odlotowe
    tlenki azotu
    usuwanie azotu
    spiekanie
    ditlenek siarki
    Opis:
    Sulfur dioxide and nitrogen oxide are health hazardous gases, which contribute to the formation of submicron acidic particulates. To reduce SO2 and NOx emission from the sintering flue gas, the combination of ammonia-Fe(II)EDTA solution scrubbing with Fe(III) electrolytic regeneration is proposed. The above method has the following advantages: direct conversion of NOx and SO2 to harmless N2 and SO4 2−, recovery of the by-product (NH4)2SO4), simultaneous removal of NOx and SO2 emission from flue gas in the reactor. The effect of the pH, initial Fe(II)EDTA concentration, and voltage on the desulfurization and denitration efficiencies was investigated using a bench-scale reactor. The maximal desulfurization and denitration efficiencies were 98% and 52%, respectively. The optimum parameters were pH ˃ 5.0, 2.1 V, and 0.05 mol·dm–3 Fe(II)EDTA concentration. SO2 and NOx removal from the sintering flue gas by ammonia-Fe(II)EDTA solution scrubbing combined with electrolytic regeneration was also demonstrated in a pilot-scale reactor.
    Źródło:
    Environment Protection Engineering; 2018, 44, 2; 19-36
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sensitivity enhancement of a wavelength interrogation-based optical fiber surface plasmon resonance sensor for hemoglobin concentration using barium titanate
    Autorzy:
    Shi, Zhen-Jiang
    Guo, Shi-Liang
    Li, Xin
    Li, Zhi-Quan
    Meng, Shu-Han
    Li, Chong-Zhen
    Powiązania:
    https://bibliotekanauki.pl/articles/27310091.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    surface plasmon resonance
    wavelength interrogation
    barium titanate
    sensitivity enhancement
    hemoglobin concentration
    Opis:
    In this paper, the performances of a wavelength interrogation-based optical fiber surface plasmon resonance sensor for hemoglobin (Hb) concentration is investigated by theoretical simulation. The proposed configuration incorporates optical fiber, 70 nm silver, 18 nm barium titanate (BaTiO3), and 2 nm zinc oxide. Simulation results show the sensor exhibits refractive index sensitivity of 4023 nm/RIU and concentration sensitivity of 10.0873 nm/(g∙dL), along with Hb concentration varying from 0 to 14 g/dL. This paper especially focuses on the influence of BaTiO3 on the performances of the proposed sensor with light wavelength ranging from 350 to 1000 nm. Comparison analysis indicates sandwiching 18 nm BaTiO3 between sensing layers not only enhances the concentration sensitivity by 30.14% but also decreases the nonlinear error of the sensor from 0.68% to 0.63%. For a wavelength accuracy of 0.1 nm, the proposed sensor can provide a resolution of 0.0099 g/dL for Hb concentration detection.
    Źródło:
    Optica Applicata; 2023, 53, 2; 167--184
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on new process for separation of silicon wafers and glass from decommissioned photovoltaic module
    Autorzy:
    Zhang, Jian wen
    Wang, Hai dong
    Zhang, Sheng guang
    Liang, Han
    Guo, Hui
    Tao, Si-yao
    Powiązania:
    https://bibliotekanauki.pl/articles/2175425.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    crystalline silicon photovoltaic modules
    decommissioned photovoltaic modules
    silicon
    solar cell
    tempered glass
    vibration separation
    Opis:
    In view of the disadvantages of the existing electrostatic separation process of decommissioned photovoltaic modules, which can only achieve the separation of fine silicon wafers and glass and has high energy consumption, a new process to solve the efficient dry separation of coarse silicon wafers and glass in decommissioned photovoltaic modules is proposed- the vibration separation method. Based on the theoretical analysis of the vibration separation of flaky silicon wafer and polyhedral glass particles, the effects of feed size, feed amount, vibration voltage, vibration frequency, horizontal inclination angle and longitudinal inclination angle on the product indexes of wafer and glass separation were investigated by single factor experiment. The optimal experimental conditions were obtained as follows: feed particle size +0.83mm, feed amount 0.15 t/h, vibration voltage 190 V, vibration frequency 48 Hz, horizontal inclination Angle 8°, longitudinal inclination Angle 3°. Under this optimized condition, the content of metal Si in the obtained silicon wafer product is 84.47%, the recovery rate of is 83.73%, the content of impurity SiO2 is 1.09%, and the content of SiO2 in the obtained glass product is 65.69%, and the recovery rate is 98.95%, the impurity metal Si content is 0.56%. This study provides a research idea for the industrial separation of silicon wafers and glass from decommissioned photovoltaic modules.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 151679
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cooperative adaptive driving for platooning autonomous self driving based on edge computing
    Autorzy:
    Chang, Ben-Jye
    Hwang, Ren-Hung
    Tsai, Yueh-Lin
    Yu, Bo-Han
    Liang, Ying-Hsin
    Powiązania:
    https://bibliotekanauki.pl/articles/330778.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    mobile edge computing
    active safe driving
    cooperative platoon driving
    cooperative adaptive cruise control
    przetwarzanie mobilne
    bezpieczna jazda
    tempomat adaptacyjny
    Opis:
    Cooperative adaptive cruise control (CACC) for human and autonomous self-driving aims to achieve active safe driving that avoids vehicle accidents or traffic jam by exchanging the road traffic information (e.g., traffic flow, traffic density, velocity variation, etc.) among neighbor vehicles. However, in CACC, the butterfly effect is encountered while exhibiting asynchronous brakes that easily lead to backward shock-waves and are difficult to remove. Several critical issues should be addressed in CACC, including (i) difficulties with adaptive steering of the inter-vehicle distances among neighbor vehicles and the vehicle speed, (ii) the butterfly effect, (iii) unstable vehicle traffic flow, etc. To address the above issues in CACC, this paper proposes the mobile edge computing-based vehicular cloud of the cooperative adaptive driving (CAD) approach to avoid shock-waves efficiently in platoon driving. Numerical results demonstrate that the CAD approach outperforms the compared techniques in the number of shock-waves, average vehicle velocity, average travel time and time to collision (TTC). Additionally, the adaptive platoon length is determined according to the traffic information gathered from the global and local clouds.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2019, 29, 2; 213-225
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A spatial study on Keshan disease prevalence and selenoprotein P in the Heilongjiang Province, China
    Autorzy:
    Wang, Yanan
    Zhang, Xiao
    Wang, Tong
    Hou, Jie
    Guo, Zhongying
    Han, Xiaomin
    Zhou, Huihui
    Liang, Hong
    Xing, Zhifeng
    Powiązania:
    https://bibliotekanauki.pl/articles/2095499.pdf
    Data publikacji:
    2021-09-03
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    prevalence
    biomarker
    prevention and control
    endemic cardiomyopathy
    selenoprotein P
    spatial regression analysis
    Opis:
    ObjectivesFew spatial studies on Keshan disease (KD) prevalence and serum selenoprotein P (SELENOP) levels have been reported in the Heilongjiang Province, China. This study aimed to investigate the spatial relationships between KD prevalence, SELENOP levels, and the socio-economic status for the precise prevention and control of KD.Material and MethodsThe study was carried out in all the 66 KD endemic counties in the Heilongjiang Province using a non-probability sampling method of a key village survey based on county-wide case-searching. The participants completed a questionnaire and had their serum SELENOP levels measured using enzyme-linked immunosorbent assay. Thematic maps were created, and spatial regression analysis was performed by ordinary least squares using ArcGIS 9.0.ResultsOverall, 53 676 residents were surveyed based on case-searching, and blood samples were collected from 409 residents. In total, 50 chronic KD cases were identified with a total prevalence of 9.3/10 000 population. The prevalence in the Tangyuan County was the highest (250/10 000 population). The mean serum SELENOP level was 13.96 mg/l. The spatial regression analysis showed that KD prevalence positively correlated with SELENOP levels and negatively with per capita disposable income among rural residents.ConclusionsThe Tangyuan County should be considered for the precise prevention and control of KD. Further research is necessary to verify the reliability of SELENOP for estimating body selenium levels, and to better understand the relationship between selenium intake and KD in the investigated area.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2021, 34, 5; 659-666
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A film stress measurement system applicable for hyperbaric environment and its application in coal and gas outburst simulation test
    Autorzy:
    Liu, Zhong-Zhong
    Wang, Han-Peng
    Yuan, Liang
    Wang, Wei
    Zhang, Chong
    Xue, Yang
    Powiązania:
    https://bibliotekanauki.pl/articles/1848966.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stress measurement system
    sealing technology
    hyperbaric environment
    coal and gas outburst
    gas-solid coupling
    Opis:
    A film stress measurement system applicable for hyperbaric environment was developed to characterize stress evolution in a physical simulation test of a gas-solid coupling geological disaster. It consists of flexible film pressure sensors, a signal conversion module, and a highly-integrated acquisition box which can perform synchronous and rapid acquisition of 1 kHz test data. Meanwhile, we adopted a feasible sealing technology and protection method to improve the survival rate of the sensors and the success rate of the test, which can ensure the accuracy of the test results. The stress measurement system performed well in a large-scale simulation test of coal and gas outburst that reproduced the outburst in the laboratory. The stress evolution of surrounding rock in front of the heading is completely recorded in a successful simulation of the outburst which is consistent with the previous empirical and theoretical analysis. The experiment verifies the feasibility of the stress measurement system as well as the sealing technology, laying a foundation for the physical simulation test of gas-solid coupled geological disasters.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 1; 73-88
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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