Środowisko rozwoju regionalnego, działania władz lokalnych i zrównoważony rozwój: dowody empiryczne z Chin

After the rapid economic growth through reform and opening-up over 40 years, Chinese governments are seeking transformation for high-quality and sustainable development currently. Regional economic development is related to internal and external environments as well as local government’s character behaviors. Employing Neuro Linguistic Programming (NLP) and Consciousness-Context-Behavior (CCB) theory, we construct a theoretical framework to measure the relationships between regional development environment (RDE), local government’s character behavior (LGCB), and regional sustainable capability (RSC). We collect the data of 30 provinces in mainland China from 2001 to 2020 to conduct hypothesis testing and empirical analysis. The results show that both RDE and LGCB are associated with RSC, and LGCB significantly mediates the relationship between RDE and RSC. However, the effects of different RDE elements on RSC are heterogeneous. Our study enriches regional sustainable development theory. It arouses us to better understand LGCB and attach importance to the roles of RDE and LGCB in regional sustainability. The enlightenment is important to global developing countries.Po szybkim wzroście gospodarczym poprzez reformy i otwarcie w ciągu 40 lat, chińskie rządy dążą obecnie do transformacji w celu zapewnienia wysokiej jakości i zrównoważonego rozwoju. Regionalny rozwój gospodarczy jest powiązany z otoczeniem wewnętrznym i zewnętrznym oraz charakterem zachowań samorządu terytorialnego. Wykorzystując teorię programowania neurolingwistycznego (NLP) i świadomość-kontekst-behawior (CCB), konstruujemy ramy teoretyczne do pomiaru relacji między środowiskiem rozwoju regionalnego (RDE), zachowaniem charakteru samorządu lokalnego (LGCB) a zrównoważonym potencjałem regionalnym (RSC). Zbieramy dane z 30 prowincji w Chinach kontynentalnych od 2001 do 2020 roku, aby przeprowadzić testowanie hipotez i analizę empiryczną. Wyniki pokazują, że zarówno RDE, jak i LGCB są powiązane z RSC, a LGCB znacząco pośredniczy w relacji między RDE i RSC. Jednak wpływ różnych elementów RDE na RSC jest niejednorodny. Nasze badanie wzbogaca regionalną teorię zrównoważonego rozwoju. Pobudza nas to do lepszego zrozumienia LGCB i przywiązania wagi do roli RDE i LGCB w zrównoważonym rozwoju regionalnym. Oświecenie jest ważne dla globalnych krajów rozwijających się

Improving Contact Load-Bearing Resistance of Ultrafine- Grained Materials Through Multilayering and Grading

Structural multilayering and grading has been designed to improve the contact load-bearing resistance of ultrafine-grained materials. The contact load-bearing response and surface damage resistance of multilayered hierarchical structured (MHSed) Ti were evaluated by experimental indentation on the overall loading response in conjunction with detailed computational simulations of local stresses and strain distribution. The combination of a hard outer layer, a gradual transition layer and a compliant core results in reduced indentation depth, but a deeper and more diffuse sub-surface plastic deformation zone, compared to the monolithic nanostructured Ti. The macroscopic indentation resistance of MHSed Ti is controlled by the underlying micromechanics of the multilayered hierarchical structure. The finite element analysis (FEA) revealed the multilayered hierarchical structure offers the effective macroscopic mechanical contact loading resistance, where the indenter increasingly “senses” the more compliant core to bear the deformation as the load increases. The structural multilayering modifies the stress and strain redistribution and effectively reduces the maximum stress concentration within the material. The structural grading provide a transitional junction for stress and plastic deformation redistribution and achieve more gradual stress distributions between component layers which mitigates the interface failure, increases the interfacial toughness, thus providing strong resistance to loading damage

Study on the characteristics of gas permeability of coal under loaded stress

The #3 coal seam of Jinsheng Rundong Ltd. of Jin-Coal Group in Shanxi Province, China, has high gas content and pressure; however, it has a low gas permeability, which can easily cause gas enrichment and may cause accidents of coal and gas outbursts. In this work, the characteristics of gas seepage were thoroughly studied by designing and modifying the ‘complete stress-strain tri-axial servo temperature-controlled test system’. The study was conducted based on four factors: Axial pressure, confining pressure, effective stress and gas pressure. We found that the axial pressure has a weak impact on coal gas permeability, indicated by a linear relationship. The confining pressure, however, has a strong impact on gas permeability, showing an exponential relationship. The relationship between permeability and gas pressure was identified as a second-order polynomial function. The functional relationship between gas permeability and axial pressure, confining pressure, effective stress, gas pressure was analyzed. Investigation into the natural flow rate of gas, concentration of gas drainage and damping coefficient supported the conclusion from the experimental study on the characteristics of gas seepage under loaded stress

Visible-light-induced tandem reaction of o-aminothiophenols and alcohols to benzothiazoles over Fe-based MOFs: Influence of the structure elucidated by transient absorption spectroscopy

[EN] MIL-100(Fe) and MIL-68(Fe), two Fe-based MOFs, were found to be active for oxidative condensation between alcohols and o-aminothiophenols to form 2-substituted benzothiazoles under visible light irradiation using oxygen (02) as oxidant. This reaction can be applied to a wide range of substrates with medium to high yield. Controlled experiments and ESR results revealed a superoxide radical (O-2(center dot-))-mediated pathway, which is derived from the reduction of O-2 by photogenerated Fe2+ on Fe-O clusters. The whole multistep reaction is limited by the step of the photo-oxidation of alcohols to aldehydes. MIL-100(Fe) showed catalytic performance superior to that of MIL-68(Fe) because its higher concentration of long-lived (mu s time scale) positive holes can be photogenerated over MIL-100(Fe), in contrast to MIL-68(Fe). This study not only provides an economical, sustainable, and thus green process for the production of 2-substituted benzothiazoles, but also illustrates the potential of using transient absorption spectroscopy as an important tool for understanding the photophysics of MOFs, which are believed to show great potential as multifunctional catalysts for light-induced organic transformations. (C) 2017 Elsevier Inc. All rights reserved.This work was supported by the 973 Program (2014CB239303), the NSFC (21273035), the National Key Technologies R&D Program of China (2014BAC13B03), and an Independent Research Project of the State Key Laboratory of Photocatalysis on Energy and Environment (2014A03). Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and CTQ2015-69153-CO2-1-R) is also gratefully acknowledged. Z. Li thanks the Award Program for Minjiang Scholar Professorship for financial support.Wang, D.; Albero-Sancho, J.; García Gómez, H.; Li, Z. (2017). Visible-light-induced tandem reaction of o-aminothiophenols and alcohols to benzothiazoles over Fe-based MOFs: Influence of the structure elucidated by transient absorption spectroscopy. Journal of Catalysis. 349:156-162. https://doi.org/10.1016/j.jcat.2017.01.014S15616234