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The "classroom revolution" in vocational education, as an important part of the action plan for improving quality and excellence in the new era, is related to the improvement of talent cultivation quality. In order to promote the teaching reform and focus on improving the quality of talent cultivation, the National Double High Plan for animal husbandry and veterinary high level professional group has implemented classroom revolution strategy research and practice. Using various kinds of forms such as questionnaires and interviews, we investigated and analyzed the current situations of classroom teaching in the field of animal husbandry and veterinary medicine, analyzed the current situation and reasons for problems, and proposed some countermeasures. Taking classroom teaching as the starting point, students were centered, sparked a "classroom revolution", optimized classroom teaching contents, innovated classroom teaching models, enhanced teachers' teaching abilities, and deepened classroom teaching reform. By implementing classroom revolution, a pattern of ideological and political education with modern mountain agriculture and animal husbandry culture has been formed. Teachers have firmly established the central position of teaching work, improved their teaching competence, effectively improved the effectiveness of classroom teaching, and significantly improved students' professional literacy. The implementation of the "classroom revolution" strategy has achieved practical results. [ABSTRACT FROM AUTHOR]

Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: Navigation context comprises observation environment and carrier activity. While global navigation satellite system (GNSS) can provide high-precision navigation, positioning, and timing services for users, users can also annotate the types of navigation scenarios they are in by distinguishing the quality and features of terminal observation values. Navigation context clustering is important for adaptive seamless navigation and location services, which can significantly promote context adaptability, configuration flexibility, and system robustness. Methods: In terms of current issues that the division of water/underwater context is simple and has insufficient granularity, the quality and characteristics of GNSS observation signals in different water depth layers are analyzed by collecting GNSS observations in different water regions. Results and Conclusions: The results show that the underwater navigation context has remarkable layering. Considering that the navigation context has inherent properties such as segmentation, merging, and connectivity, this paper subdivides the underwater navigation context into three layers: Submerged water (about less than 6.5 cm), shallow water (about greater than 6.5 cm and less than 8.5 cm), and deep water (about greater than 8.5 cm) through K-means clustering, and conducts navigation context classification experiments using various GNSS signal features. It reveals that the clustering accuracy rate is 90.4%, indicating the effectiveness of submerged-shallow-deep navigation context division. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Fujian Agricultural Science & Technology is the property of Fujian Agricultural Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To explore the analgesic effect and underlying mechanisms of dexmedetomidine(DEX) with spared nerve injury(SNI) rat model. Methods Forty-eight SD rats were randomly divided into control group, SNI group, DEX group and DEX+GW9662 group, with 12 rats in each. From first day to 14th days after SNI surgery, rats in DEX group were intra-thecally injected with 2 μg/kg (10 μL) of dexmedetomidine, rats in DEX group were intrathecally injected with 2 μg/kg of dexmedetomidine+300 μg of PPAR-γ inhibitor (GW9662), while rats in control and SNI groups were intrathecally injected with equal volume of solvent. At day 1 before operation, day 3, 7, 14 after operation, paw withdrawal threshold and thermal withdrawal latency were detected to evaluate the painintensity. At post-operative day 14,immunofluorescence staining was used to detect the expression of Iba-1 in spinal dorsal horn, Western blot was used to detect the expression of Iba-1 and PPAR-γ in ipsilateral spinal dorsal horn, ELISA was used to detect the levels of IFN-γ and IL-6 in ipsilateral spinal dorsal horn. Results On postoperative day 7 and 14, compared with control group, the pain intensity of ipsilateral hind paw and the expression of Iba-1, PPAR-γ, IL-6 and IFN-γ in ipsilateral spinal dorsal horn were enhanced in SNI group(P＜0.05). Compared with SNI group, the pain intensity of ipsilateral hind paw and the expression of Iba-1, PPAR-γ, IL-6 and IFN-γ in ipsilateral spinal dorsal horn decreased in EDX group(P＜0.05). Compared with DEX group, the pain intensity of ipsilateral hind paw and the expression of Iba-1, PPAR-γ, IL-6 and IFN-γ in ipsilateral spinal dorsal increased in DEX+GW9662 group(P＜0.05). Conclusions Dexmedetomidine obviously inhibits pain sensitization of SNI rats. The underlying analgesic mechanism may be related to the up-regulation of PPAR-γ in spinal dorsal horn. [ABSTRACT FROM AUTHOR]

Copyright of International Architecture is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Geomatics & Information Science of Wuhan University is the property of Geomatics & Information Science of Wuhan University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Synthetic Fiber Industry is the property of Sinopec Baling Petrochemical Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The experiment was to study the quality of Bupleurum chinense DC., Bupleurum scorzonerifolium Willd. and Bupleurum faleatum L., to evaluate the quality of Bupleurum and its high quality varieties comprehensively. With four kinds of efficacy components (extract content, saikosaponin, total flavonoid, polysaccharide) as indexes, combined with the weight coefficients were calculated by AHP method, the comprehensive scoring results served as the final basis for evaluation of Bupleurum L., to analyze the quality of different varieties of BupLeurum L.. The results showed that the extract content of Bupleurum chinense DC. was 23.12%, which was extremely higher than that of Bupleurum scorzonerifolium Willd. and Bupleurum faleatum L (P<0.01). The highest saikosaponin (a+c+d) content was Bupleurum chinense DC. (0.56%). The highest total flavonoids content was Bupleurum faleatum L. (5.87%). The highest polysaccharide content was Bupleurum chinense DC. (1.21%). The highest score in comprehensive evaluation was Bupleurum chinense DC.. The experiment indicates that the quality of Bupleurum chinense DC. is the highest among three kinds of Bupleurum L., the variety and producing area has significant influence on content of effective components of Bupleurum L.. [ABSTRACT FROM AUTHOR]

Copyright of Geomatics & Information Science of Wuhan University is the property of Geomatics & Information Science of Wuhan University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China Agricultural University is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

中国和新加坡签署《自由贸易协定升级议定书》，是两国 在坚持自由贸易和多边主义原则的基础上，为促进自由贸易区建设，更 新两国的贸易安排、进一步推动两国经贸关系的开放化和自由化所采取 的重要行动。中新两国的经贸合作领域和合作空间将得到新的拓展和提 升。这不仅将对于两国经贸关系向更高水平和更高层次迈进有积极的促 进作用，而且还将对中国- 东盟区域经济合作、中国与"一带一路"沿 线国家的经济合作以及开放型世界经济建设的推进产生积极影响. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

System allowable pressure beforehand distribution between laterals and branch pipes, and the location analysis of the maximum and minimum water pressure points are often involved in the traditional optimization way of irrigation network for micro-irrigation. However, the study of maximum control area of basic irrigation controlling area network is inadequate. In this paper, in order to expand the control area, simplify the structure and lower the cost of basic irrigation controlling area network system, the objective functions of basic irrigation controlling area network were established. The function was modeled by taking some typical commercial pipes for branch and lateral pipe as the research object. The network’s laterals were unidirectional or bidirectional for micro-irrigation. There were two models including maximum control area model and the minimum cost per area model, respectively. According to the actual engineering requirements and taking practical types of pipes in the market into consideration, we selected seven pipes. These pipes had different types of diameter as branch pipes and same type lateral pipes. The branch pipes were connected together in the order of diameter from large pipe diameter to the small one. In addition, same diameter lateral pipes were connected to the outlets of branch pipes. Considering planting characteristics and the pattern of water requirements of crop, distance between two adjacent outlets of branch pipes or lateral pipes could be set as the constant standard length. In order to facilitate the optimal design of the micro-irrigation network, every type of pipes, including branch pipes or lateral pipes, was considered as being composed of integral units of constant standard length and a unique allowance (less than the constant standard length) that was located in front of branch pipes or lateral pipes. There were two lateral layouts in the system, unidirectional and bidirectional. Then pipeline network arrangement of basic irrigation controlling area was accomplished. First, we supposed that flow of every lateral outlet was in the condition of the design flow and maximum pressure drop of all outlets in the basic irrigation controlling area network system for micro-irrigation should be less than allowable pressure; then the optimal combinations of pipelines were given based on matlab genetic algorithm toolbox (GA toolbox). The pipelines met the pressure condition in accordance with irrigation uniformity. The network was considered as a whole in this method. Practically, the paper simulated water pressure factors such as the surface slope, and the hydraulic gradient for value of every outlet including all laterals and branch pipes. In the method, the system allowable pressure, and the location discussion of the maximum and minimum water pressure points could be ignored. Pipe diameter adjusting based on the optimal combinations result was not necessary. Nevertheless, the optimal combinations result could be applied to engineering design directly. The results showed that based on maximum control area model，the control area of the network with bidirectional laterals was significantly higher than unidirectional one. The number was increased by about 23%-24% and the cost per area was reduced by about 23%-36%；In the model of minimum cost per hectare, compared with unidirectional laterals, the control area of bidirectional was improved by about 105%-200%. Meanwhile, the cost was decreased by about 7%-10%. The optimization results indicated that the network with bidirectional laterals was superior to unidirectional one in all respects. Optimization design results can be improved continuously by adjusting system parameters such as pipe diameter and length. This design method has practical meaning and theory value in optimization of micro-irrigation network. [ABSTRACT FROM AUTHOR]