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    Wyświetlanie 1-9 z 9
    Tytuł:
    Evaluation of integrated UFCW-MFC reactor for azo dye wastewater treatment and simultaneous bioelectricity generation
    Autorzy:
    Zou, Haiming
    Chu, Lin
    Wang, Yan
    Powiązania:
    https://bibliotekanauki.pl/articles/207646.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    COD
    UFCW-MFC
    methyl orange
    wastewater
    ChZT
    oranż metylowy
    oczyszczanie ścieków
    Opis:
    An up-flow constructed wetland (UFCW) incorporating a novel membrane-less air-cathode single-chamber microbial fuel cell (MFC) was designed to treat dye wastewater and simultaneously generate bioelectricity. The performance of UFCW-MFC was evaluated via Methyl Orange (MO) and chemical oxygen demand (COD) removal rates and the output voltage. For comparison, the performance of a single UFCW was also assessed. A repeatable and stable voltage output of about 0.44±0.2 V was obtained in UFCW-MFC. The MO and COD removal rates in UFCW-MFC were 93.5 and 57.2%, respectively, significantly higher than those in single UFCW (75.4 and 42.6%, respectively), suggesting the obvious enhancement of electrodes on MO and COD removal. The anode zone of UFCW-MFC made the most contribution to MO and COD removal compared with other layers. The oxidation-reduction potential (ORP) and dissolved oxygen (DO) profiles showed that the anaerobic environment was well developed in the lower part of UFCW-MFC (0–24 cm) and the upper part (41–42 cm) had a good aerobic environment, thus greatly contributing to the MO anaerobic reduction and aerobic degradation of breakdown products. These results obtained here suggest that the UFCW-MFC may provide an effective alternative for the treatment of dye wastewater and simultaneous bioelectricity generation.
    Źródło:
    Environment Protection Engineering; 2020, 46, 1; 63-72
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Azo dye wastewater treatment in a novel process of biofilm coupled with electrolysis
    Autorzy:
    Zou, Haiming
    Chu, Lin
    Wang, Yang
    Powiązania:
    https://bibliotekanauki.pl/articles/204706.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    azo dye wastewater treatment
    color removal
    biofilm
    electrolysis
    bioelectrochemical system
    Opis:
    Azo dye wastewater treatment is urgent necessary nowadays. Electrochemical technologies commonly enable more efficient degradation of recalcitrant organic contaminants than biological methods, but those rely greatly on the energy consumption. A novel process of biofilm coupled with electrolysis, i.e., bioelectrochemical system (BES), for methyl orange (MO) dye wastewater treatment was proposed and optimization of main influence factors was performed in this study. The results showed that BES had a positive effect on enhancement of color removal of MO wastewater and 81.9% of color removal efficiency was achieved at the optimum process parameters: applied voltage of 2.0 V, initial MO concentration of 20 mg/L, glucose loads of 0.5 g/L and pH of 8.0 when the hydraulic retention time (HRT) was maintained at 3 d, displaying an excellent color removal performance. Importantly, a wide range of effective pH, ranging from 6 to 9, was found, thus greatly favoring the practical application of BES described here. The absence of a peak at 463 nm showed that the azo bond of MO was almost completely cleaved after degradation in BES. From these results, the proposed method of biodegradation combined with electrochemical technique can be an effective technology for dye wastewater treatment and may hopefully be also applied for treatment of other recalcitrant compounds in water and wastewater
    Źródło:
    Archives of Environmental Protection; 2019, 45, 3; 38-43
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electoral Politics in Taiwan: 2008–2012
    Polityka wyborcza na Tajwanie: 2008-2012
    Autorzy:
    Lin, Chiung-chu
    Powiązania:
    https://bibliotekanauki.pl/articles/1185514.pdf
    Data publikacji:
    2016-10-24
    Wydawca:
    Szkoła Główna Handlowa w Warszawie
    Tematy:
    electoral system
    political party system
    political awareness
    political preferences
    system wyborczy
    system partii politycznej
    świadomość polityczna
    preferencje polityczne
    Opis:
    This paper conducts an analysis of the implementation of the new electoral system (single-district, two-votes system) in practice in 2008. It is focused on the research of two aspects: first, the voter’s awareness of the new electoral system; second, the impact of the new electoral system on the political party system. In the research methods, this article combines the analysis of an individual survey data and information on the election results, trying to find an answer to the question about Taiwan’s voters knowledge of the electoral system situation, the factors that affect the knowledge of the electoral system, as well as the issues of the new electoral system’s impact on the change and development of the political party system. The research has found out that: Taiwan’s voter awareness of the current electoral system is not high. The further research into the relations between the knowledge of the electoral system and the voting choice, as well as the control of other possible factors of influence, showed that the voters who have a more correct and clear understanding of the electoral system have the tendency to vote for small parties. From the results of the general information, the practice of the electoral system indeed led to the decline in pluralistic views. The number of effective parties in the parliament has significantly decreased to that one before restructuring. The new electoral system has made survival difficult for small parties, while the rate of the wasted vote in the regional constituency increased dramatically, making it more difficult to represent pluralistic views.These possible problems caused by the new electoral system, also triggered reactions and initiatives among the domestic public concerning the reform of the electoral system in 2015.
    W niniejszym opracowaniu dokonano analizy wdrożenia nowego systemu wyborczego (system jednoizbowy, system dwóch głosów) w praktyce w 2008 r. Skoncentrowano się na badaniu dwóch aspektów: po pierwsze, świadomości wyborców nowego systemu wyborczego; po drugie, wpływ nowego systemu wyborczego na system partyjny. W metodach badawczych artykuł ten łączy analizę poszczególnych danych ankietowych i informacji o wynikach wyborów, próbując znaleźć odpowiedź na pytanie o tajwańską wyborców wiedzę na temat sytuacji w systemie wyborczym, czynniki wpływające na znajomość systemu wyborczego , a także kwestie wpływu nowego systemu wyborczego na zmianę i rozwój systemu partii politycznej. Badania wykazały, że: tajwańska świadomość wyborców dotycząca obecnego systemu wyborczego nie jest wysoka. Dalsze badania zależności między wiedzą o systemie wyborczym a wyborem do głosowania, a także kontrola innych możliwych czynników wpływu, wykazały, że wyborcy, którzy mają bardziej poprawne i jasne zrozumienie systemu wyborczego, mają tendencję do głosuj na małe imprezy. Z wyników ogólnych informacji wynika, że praktyka systemu wyborczego doprowadziła do spadku pluralistycznych poglądów. Liczba skutecznych partii w parlamencie znacznie zmniejszyła się do tej przed restrukturyzacją. Nowy system wyborczy utrudnił przetrwanie małym partiom, a tempo zmarnowanego głosowania w regionalnym okręgu wyborczym dramatycznie wzrosło, utrudniając reprezentowanie pluralistycznych poglądów. Te ewentualne problemy spowodowane przez nowy system wyborczy również wywołały reakcje i inicjatywy wśród krajowej opinii publicznej dotyczące reformy systemu wyborczego w 2015 roku.
    Źródło:
    Studia z Polityki Publicznej; 2016, 3, 4(12); 57-75
    2391-6389
    2719-7131
    Pojawia się w:
    Studia z Polityki Publicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New versions on Nikaidôs coincidence theorem
    Autorzy:
    Chu, Liang-Ju
    Lin, Ching-Yan
    Powiązania:
    https://bibliotekanauki.pl/articles/729530.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    Vietoris map
    Nikaidô's coincidence theorem
    Fan-type element
    Górniewicz-type fixed point theorem
    coincidence
    variational inequality
    acyclic multifunction
    partition of unity
    local intersection property
    KKM mapping
    locally selectionable multifunction
    Opis:
    In 1959, Nikaidô established a remarkable coincidence theorem in a compact Hausdorff topological space, to generalize and to give a unified treatment to the results of Gale regarding the existence of economic equilibrium and the theorems in game problems. The main purpose of the present paper is to deduce several generalized key results based on this very powerful result, together with some KKM property. Indeed, we shall simplify and reformulate a few coincidence theorems on acyclic multifunctions, as well as some Górniewicz-type fixed point theorems. Beyond the realm of monotonicity nor metrizability, the results derived here generalize and unify various earlier ones from the classic optimization theory. In the sequel, we shall deduce two versions of Nikaidô's coincidence theorem about Vietoris maps from different approaches.
    Źródło:
    Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2002, 22, 1; 79-95
    1509-9407
    Pojawia się w:
    Discussiones Mathematicae, Differential Inclusions, Control and Optimization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On discontinuous quasi-variational inequalities
    Autorzy:
    Chu, Liang-Ju
    Lin, Ching-Yang
    Powiązania:
    https://bibliotekanauki.pl/articles/729419.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    variational inequality
    quasi-variatioal inequality
    Ricceri's conjecture
    Karamardian condition
    Hausdorff continuous multifunction
    Kneser's minimax inequality
    Opis:
    In this paper, we derive a general theorem concerning the quasi-variational inequality problem: find x̅ ∈ C and y̅ ∈ T(x̅) such that x̅ ∈ S(x̅) and
    ⟨y̅,z-x̅⟩ ≥ 0, ∀ z ∈ S(x̅),
    where C,D are two closed convex subsets of a normed linear space X with dual X*, and $T:X → 2^{X*}$ and $S:C → 2^D$ are multifunctions. In fact, we extend the above to an existence result proposed by Ricceri [12] for the case where the multifunction T is required only to satisfy some general assumption without any continuity. Under a kind of Karmardian's condition, we give a partial affirmative answer to an unbounded quasi-variational inequality problem.
    Źródło:
    Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2007, 27, 2; 199-212
    1509-9407
    Pojawia się w:
    Discussiones Mathematicae, Differential Inclusions, Control and Optimization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variational inequalities in noncompact nonconvex regions
    Autorzy:
    Lin, Ching-Yan
    Chu, Liang-Ju
    Powiązania:
    https://bibliotekanauki.pl/articles/729495.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    Nikaidô's coincidence theorem
    variational inequality
    nearly convex
    V₀-Karamardian condition
    Saigal condition
    acyclic multifunction
    algebraic interior
    bounding points
    Opis:
    In this paper, a general existence theorem on the generalized variational inequality problem GVI(T,C,ϕ) is derived by using our new versions of Nikaidô's coincidence theorem, for the case where the region C is noncompact and nonconvex, but merely is a nearly convex set. Equipped with a kind of V₀-Karamardian condition, this general existence theorem contains some existing ones as special cases. Based on a Saigal condition, we also modify the main theorem to obtain another existence theorem on GVI(T,C,ϕ), which generalizes a result of Fang and Peterson.
    Źródło:
    Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2003, 23, 1; 5-19
    1509-9407
    Pojawia się w:
    Discussiones Mathematicae, Differential Inclusions, Control and Optimization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bulldoze and rebuild: Modifying cratonic lithosphere via removal and replacement induced by continental subduction
    Autorzy:
    Meng, Lingtong
    Chu, Yang
    Lin, Wei
    Mitchell, Ross N.
    Zhao, Liang
    Powiązania:
    https://bibliotekanauki.pl/articles/24202141.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    lithosphere
    China
    Opis:
    Establishing the mechanisms for craton modification is critical for understanding cratonic stability and architecture. Both plate tectonics and mantle plumes can cause weakening, mechanical decoupling, and even lithospheric removal. But craton modification  – craton destruction accompanied or followed by craton rejuvenation  – has received less attention. It is well-known that oceanic subduction dominantly destroys cratonic lithosphere with replacement to a lesser degree, and mantle plumes have been related to both destruction and rejuvenation. The role of continental subduction in craton modification, however, remains a comparatively open question. The North China Craton, as a previously stable continent with a lithosphere of more than 200 km since the Paleoproterozoic, was reworked and substantially destroyed since the Mesozoic, with intensive destruction occurring in the Early Cretaceous. Earlier in the Mesozoic, North China Craton experienced a continent-continent collision (as the upper plate) with the South China Block, forming the Sulu orogenic belt, providing an opportunity to understand the potential for craton modification due to deep continental subduction In the North China craton, we report the presence of material (i.e., Yunshan unit) sourced from the underlying subducted plate. It is composed of foliated monzonitic granite and metamorphic sedimentary rocks that locally experienced crustal anatexis. Through detailed zircon U-Pb dating, it formed at latest Triassic (ca. 212 Ma). Importantly, the 800–700 Ma inherited zircons from the Yunshan foliated granite resemble those from the South China Block rather than the North China Craton. According to structural and magnetic data, the fabrics of the Yunshan foliated granite, characterized by gentle magnetic/mesoscopic foliations and conspicuous NW-SE-trending magnetic/mesoscopic lineations with a top-to-the-NW shearing. Its geometry, kinematics, and timing all compare favorably with the latest Triassic extensional structure accounting for the exhumation of the Sulu orogenic belt. We thus interpret the Yunshan unit to have been sourced from the subducted South China Block, then exhumed and emplaced into the overriding North China Craton (Fig. 1A). Combining our new results with previous geological and geophysical data, we argue that from 250–220 Ma a 200-km-long tract of North China Craton lithosphere was bulldozed by the subducted South China Block, resulting in a lithospheric suture far from the suture zone at the surface. This lithospheric removal occurred at mid-lower crustal levels (16–20 km depth)  – much shallower than previously thought possible. The bulldozed North China Craton lithosphere was simultaneously replaced by the reworked underlying South China Block plate. Such a “bulldoze and rebuild” lithospheric modification process minimized asthenosphere-lithosphere interaction, thus preventing the North China Craton from further modification (Fig. 1B–1D). Because there was essentially no net loss of lithosphere during deep continental subduction, the North China Craton largely maintained its stability for the time and did not suffer intensive destruction until later Early Cretaceous palaeo-Pacific oceanic subduction. This “bulldoze and rebuild” model can thus account for how a craton can maintain its stability during a collision with another continental plate.
    Źródło:
    Geotourism / Geoturystyka; 2023, 1-2 (72-73); 47--48
    1731-0830
    Pojawia się w:
    Geotourism / Geoturystyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Coevolution of Paleo-Tethys and Rheic: New tectonic constraints from Iran and Turkey
    Autorzy:
    Chu, Yang
    Wan, Bo
    Lin, Wei
    Allen, Mark B.
    Talebian, Morteza
    Uysal, Ibrahim
    Xin, Guangyao
    Powiązania:
    https://bibliotekanauki.pl/articles/24202110.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    tectonics
    Iran
    Turkey
    Opis:
    In the Paleozoic, one large ocean once separated the Eurasia of the north and the Gondwana of the south, but it has two names, Paleo-Tethys and Rheic, suggesting different tectonic history. The Paleo-Tethys represent the ocean from east Asia to Middle East regions and vanished in Early Mesozoic, while the Rheic existed across the Europe and finally closed in Carboniferous. The two oceans coevolved for a long time, but the interaction and mutual effect at subduction and collision stages are not well understood. Initiation processes of ocean spreading, subduction and collision are crucial in plate tectonics, so resolving the timing for these turning points may greatly enhanced the precision and accuracy of reconstruction of the two oceans, especially for the western Paleo-Tethys. In NE Iran, we find that all the Paleozoic clastic rocks record two major zircon U-Pb age groups peaked at ~800 Ma and ~600 Ma. Consistency in age patterns show a dominant provenance from Neoproterozoic basement of the north Gondwana and a long-lasting passive margin sedimentation after the spreading of the Paleo-Tethys. This environment was interrupted by initial collision between the Turan (Eurasia) and Central Iran (Gondwana) Blocks with massive coarse clastic deposition, i.e. the protolith of the Mashhad Phyllite, in a peripheral foreland basin on the Paleozoic passive margin. The Mashhad Phyllite yields a striking provenance change from passive margin to active margin. The Paleozoic ages reveal a long-lived subduction zone at the south Turan Block initiated since the latest Ordovician. More importantly, the provenance shift better constrains the initial collision timing with the maximum deposition age of the Mashhad Phyllite (~228 Ma) refining the evolution history of Paleo-Tethys. Based on our new results and previous data, we compare the tectonic history of the Paleo-Tethys in its western segment with eastern Rheic, and further discuss the interaction between the Rheic and Paleo-Tethys. We find existence of a lateral subduction zone plays a crucial rule in initiating new subduction zone after an old oceanic plate vanishes and two continents collides, while a lateral collision can also result into shallowing of subducted slab and preservation of coeval compressional structures. These new insights help us to better interpret the emplacement of high-pressure metamorphic rocks during subduction and subduction zone jump when the Rheic and Paleo-Tethys coevolved.
    Źródło:
    Geotourism / Geoturystyka; 2023, 1-2 (72-73); 15--15
    1731-0830
    Pojawia się w:
    Geotourism / Geoturystyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys
    Autorzy:
    Lin, Wei
    Liu, Fei
    Wang, Ying
    Meng, Lingtong
    Faure, Michel
    Chu, Yang
    Nguyen, Vuong Van
    Wu, Qinying
    We, Wei
    Thu, Hoai Luong Thi
    Vu, Tich Van
    Powiązania:
    https://bibliotekanauki.pl/articles/24202127.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Tethys
    heterogeneity
    Vietnam
    Opis:
    The ophiolite is the direct evidence to restore the oceanic evolution, and it is used to identify the convergence boundary of the plates. Compared with ophiolite, ophiolitic mélange, especially its matrix, contains more information about the evolution of ocean. The evolution of eastern Paleo-Tethys, between the South China and Indochina blocks, recorded the whole process of rifting from Gondwana and their northward migration and convergence. To understand the tectonic implications from matrix of ophiolitic mélange, the Mesozoic Paleo-Tethys Ailaoshan–Song Ma–Song Chay suture zone located in the North Vietnam–Southeast Yunnan region acts as an ideal study area. Based on the structural geology, we reviewed previous zircon U-Pb dating and Lu-Hf isotopic analyses on the detrital zircon from the Ailaoshan–Song Ma–Song Chay ophiolitic mélange. Accordingly, we subdivide the matrix of these ophiolitic mélange into four parts (M1, M2, M3, and M4; Fig. 1). M1 is mainly located in the middle segment of the Ailaoshan–Song Ma belt. It shows age peaks of 440 Ma and 960 Ma with εHf(t) values of −19.6 ~ +10.3. M2 is mainly located in the NW segment of the Ailaoshan–Song Ma belt, showing a dominant age peak of ~260 Ma. Particularly, it has εHf(t) values of −28.9 ~ +8.1. M3 is mainly located in the SE segment of the Ailaoshan–Song Ma belt, showing the peaks at ~250 Ma, 440 Ma, and 960 Ma with εHf(t) values of −21.9 ~ +10.1. M4 is mainly located in the Song Chay belt, showing the peaks at ~310 Ma, 470 Ma, 610 Ma, 770 Ma, and 965 Ma with εHf(t) values of −28.2 ~ +10.8. The geochronological data of the detrital zircon from the matrix of the Ailaoshan– Song Ma–Song Chay ophiolitic mélange zone, documents a temporal heterogeneity between the M1, M2, M3, and M4 units, which formed at 310–270 Ma, 265–250 Ma, 245–240 Ma, and 310–255 Ma, respectively. The different components and provenances of each unit reflect a strike-parallel heterogeneity (Fig. 1). The M1 unit was mainly sourced from the Paleozoic sedimentary rocks of the Indochina Block (IB). The main provenance for the M2 unit is Emeishan Large Igneous Province (ELIP). The magmatic arc developed in the IB provided the materials for the M3 unit, and the detrital materials of the M4 were mainly sourced from the South China Block (SCB) (Fig. 1). The Cenozoic strike-slip deformation led to an inverted geometry of the M1, M2, and M3 units, accounting for a strike-perpendicular heterogeneity straight to the strike of the orogenic belt. The temporal, strike-parallel, and strike-perpendicular heterogeneity help us to decipher the tempo-spatial evolution of the Paleo-Tethys. The M1, M2, M3, and M4 units contain information from different evolutionary stages, likely recording the comprehensive history of the ancient oceanic basin. Importantly, our results demonstrate that both the active continental margin of the IB and the passive continental margin of the SCB acted as provenance sources that supplied significant amount of detrital material in the ophiolitic mélange matrix, indicating that the Paleo-Tethys Ocean was a “narrow” or “limited” ocean rather than the archipelagic ocean proposed before.
    Źródło:
    Geotourism / Geoturystyka; 2023, 1-2 (72-73); 42--43
    1731-0830
    Pojawia się w:
    Geotourism / Geoturystyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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