Research on Feasibility and Necessity of Network Model Implement of Chinese School Sports Policy

Construction of school sports policy implementation network model already has a favorable environment, and reasonable conditions of feasibility, dimension, security and effects of predictability, school sports perform network model is not only the importance of education authorities and school systems and structures at all levels to develop and implement the role of school sports policy, but also pay more attention to the interests of policy analysis of participants’ expression on the effect of school sports policy implementation, and highlighted the strength of the relationship between participants and the degree of significant value which develop and implement policies on schools sports policy

Concurrent probing of electron-lattice dephasing induced by photoexcitation in 1T-TaSeTe using ultrafast electron diffraction

It has been technically challenging to concurrently probe the electrons and the lattices in materials during non-equilibrium processes, allowing their correlations to be determined. Here, in a single set of ultrafast electron diffraction patterns taken on the charge-density-wave (CDW) material 1T-TaSeTe, we discover a temporal shift in the diffraction intensity measurements as a function of scattering angle. With the help of dynamic models and theoretical calculations, we show that the ultrafast electrons probe both the valence-electron and lattice dynamic processes, resulting in the temporal shift measurements. Our results demonstrate unambiguously that the CDW is not merely a result of the periodic lattice deformation ever-present in 1T-TaSeTe but has significant electronic origin. This method demonstrates a novel approach for studying many quantum effects that arise from electron-lattice dephasing in molecules and crystals for next-generation devices.Comment: 13 pages and 4 figures in main tex

Differentiation potential of STRO-1+ dental pulp stem cells changes during cell passaging

<p>Abstract</p> <p>Background</p> <p>Dental pulp stem cells (DPSCs) can be driven into odontoblast, osteoblast, and chondrocyte lineages in different inductive media. However, the differentiation potential of naive DPSCs after serial passaging in the routine culture system has not been fully elucidated.</p> <p>Results</p> <p>DPSCs were isolated from human/rat dental pulps by the magnetic activated cell sorting based on STRO-1 expression, cultured and passaged in the conventional culture media. The biological features of STRO-1⁺DPSCs at the 1^stand 9^thpassages were investigated. During the long-term passage, the proliferation ability of human STRO-1⁺DPSCs was downregulated as indicated by the growth kinetics. When compared with STRO-1⁺DPSCs at the 1^stpassage (DPSC-P1), the expression of mature osteoblast-specific genes/proteins (alkaline phosphatase, bone sialoprotein, osterix, and osteopontin), odontoblast-specific gene/protein (dentin sialophosphoprotein and dentin sialoprotein), and chondrocyte-specific gene/protein (type II collagen) was significantly upregulated in human STRO-1⁺DPSCs at the 9^thpassage (DPSC-P9). Furthermore, human DPSC-P9 cells in the mineralization-inducing media presented higher levels of alkaline phosphatase at day 3 and day 7 respectively, and produced more mineralized matrix than DPSC-P9 cells at day 14. <it>In vivo </it>transplantation results showed that rat DPSC-P1 cell pellets developed into dentin, bone and cartilage structures respectively, while DPSC-P9 cells can only generate bone tissues.</p> <p>Conclusions</p> <p>These findings suggest that STRO-1⁺DPSCs consist of several interrelated subpopulations which can spontaneously differentiate into odontoblasts, osteoblasts, and chondrocytes. The differentiation capacity of these DPSCs changes during cell passaging, and DPSCs at the 9^thpassage restrict their differentiation potential to the osteoblast lineage <it>in vivo</it>.</p

Aridity-driven shift in biodiversity–soil multifunctionality relationships

From Springer Nature via Jisc Publications RouterHistory: received 2021-01-07, accepted 2021-08-12, registration 2021-08-25, pub-electronic 2021-09-09, online 2021-09-09, collection 2021-12Publication status: PublishedFunder: National Natural Science Foundation of China (National Science Foundation of China); doi: https://doi.org/10.13039/501100001809; Grant(s): 31770430Abstract: Relationships between biodiversity and multiple ecosystem functions (that is, ecosystem multifunctionality) are context-dependent. Both plant and soil microbial diversity have been reported to regulate ecosystem multifunctionality, but how their relative importance varies along environmental gradients remains poorly understood. Here, we relate plant and microbial diversity to soil multifunctionality across 130 dryland sites along a 4,000 km aridity gradient in northern China. Our results show a strong positive association between plant species richness and soil multifunctionality in less arid regions, whereas microbial diversity, in particular of fungi, is positively associated with multifunctionality in more arid regions. This shift in the relationships between plant or microbial diversity and soil multifunctionality occur at an aridity level of ∼0.8, the boundary between semiarid and arid climates, which is predicted to advance geographically ∼28% by the end of the current century. Our study highlights that biodiversity loss of plants and soil microorganisms may have especially strong consequences under low and high aridity conditions, respectively, which calls for climate-specific biodiversity conservation strategies to mitigate the effects of aridification

Increasing Sustainability Literacy for Environmental Design Students: A Transdisciplinary Learning Practice

Nowadays, the urban water system is facing many challenges which affect the sustainable development of society. This requires higher education institutions to develop people with a diversity of knowledge and complex problem-solving capacities. This paper presents a practical case of transdisciplinary learning for junior students of environmental design at NingboTech University (Ningbo, China). The course “Environmental Engineering and Technology” ran from 1 March to 24 April 2022. A total of 25 students were instructed in the theories of urban water environmental engineering and then worked in groups to complete a design project for a river ecological restoration. The outcomes were analyzed from the perspective of combining engineering and landscape design. At the end of the course, students volunteered to take an online questionnaire about course evaluation. Students responded highly positively to the course, achieved growth in sustainability literacy, and developed skills in transdisciplinary learning. It also confirms the importance of outdoor education and project-based teaching. Additionally, the lowering of the requirement for mathematical skills through the internet tools usage and the formation of multidisciplinary teams are expected to improve future teaching outcomes. These results provide new insights for educators into the integration of the disciplines between design and engineering

Increasing Sustainability Literacy for Environmental Design Students: A Transdisciplinary Learning Practice

Nowadays, the urban water system is facing many challenges which affect the sustainable development of society. This requires higher education institutions to develop people with a diversity of knowledge and complex problem-solving capacities. This paper presents a practical case of transdisciplinary learning for junior students of environmental design at NingboTech University (Ningbo, China). The course &ldquo;Environmental Engineering and Technology&rdquo; ran from 1 March to 24 April 2022. A total of 25 students were instructed in the theories of urban water environmental engineering and then worked in groups to complete a design project for a river ecological restoration. The outcomes were analyzed from the perspective of combining engineering and landscape design. At the end of the course, students volunteered to take an online questionnaire about course evaluation. Students responded highly positively to the course, achieved growth in sustainability literacy, and developed skills in transdisciplinary learning. It also confirms the importance of outdoor education and project-based teaching. Additionally, the lowering of the requirement for mathematical skills through the internet tools usage and the formation of multidisciplinary teams are expected to improve future teaching outcomes. These results provide new insights for educators into the integration of the disciplines between design and engineering

Image Encryption Using the Chaotic Josephus Matrix

This paper presents a new image encryption solution using the chaotic Josephus matrix. It extends the conventional Josephus traversing to a matrix form and proposes a treatment to improve the randomness of this matrix by mixing chaotic maps. It also derives the corresponding encryption primitives controlled by the chaotic Josephus matrix. In this way, it builds up an image encryption system with very high sensitivities in both encryption key and input image. Our simulation results demonstrate that an encrypted image of using this method is very random-like, that is, a uniform-like pixel histogram and very low correlations in adjacent pixels. The design idea of this method is also applicable to data encryption of other types, like audio and video