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为了探究延长光纤机械寿命的关键技术,研究了光纤机械可靠性及寿命评估模型。影响光纤机械寿命的主要因素是光纤裂纹生成和光纤裂纹在应力腐蚀下不断生长。根据光纤机械强度计算公式以及光纤疲劳试验的威布尔分布特性,建立光纤筛选实验寿命评估模型。运用该寿命评估模型对OPGW（光纤复合架空地线）线路寿命进行模拟计算和评估,探究了延长OPGW线路寿命的关键技术。结果表明,提高光纤疲劳参数和降低光纤使用时的应力水平,均可显著提高光纤寿命。

An accurate phase field method for 2-phase flow with soluble surfactants was developed based on the phase field theory. The key point of this method was the utilization of consistent and conservative mass flux to ensure the conservation of momentum transport across the interface. The finite-volume method was used to discretize the governing equations in their conservative form. The 5th-order WENO scheme was chosen to effectively handle the convective terms, aimed to enhance accuracy and robustness in addressing steep variations in the interfacial region. Furthermore, various 2D difference templates were designed to optimize gradient discretization in the surface tension term. Particularly, with the template corresponding to the lattice Boltzmann D2Q9 model, a notable reduction of the spurious velocity and a significant improvement of the accuracy of surfactant concentration prediction were achieved. Various examples such as static droplets, fusion of 2 droplets, bubble rise with a large density ratio, deformation and breakage of individual droplets in shear flow demonstrate the accuracy, conservative properties, and robustness of the proposed method. [ABSTRACT FROM AUTHOR]

Objective To explore the correlation between adolescents' self assessment of oral health and oral examination results assessed according to WHO recommended standards and to analyze the factors influencing adolescents' self - assessment of oral health. Methods A total of 2 146 adolescents aged 12 from 11 districts and counties in Guizhou Province were selected through multi stage random sampling. Oral health examinations and a questionnaire survey were conducted according to the methods and standards of the Fourth National Oral Health Epidemiological Survey. Kendall correlation analysis was used to compare the correlation between the results of the two evaluation methods. The chi-squared (x²) test and ordered logistic regression analysis were employed to analyze the factors affecting adolescents' self assessment of oral health status. Results There was a significant correlation between self-rated oral health and oral examination results. Statistical differences were observed in adolescents' self rated oral health based on different economic regions, brushing habits, general health evaluations, experiences of dental trauma, toothache, and the number of siblings (P<0.05). Conclusion Adolescents' self assessment of oral health can reflect their actual oral health status. It is recommended to focus on the key factors affecting adolescents' oral health, promote and popularize proper brushing techniques, and improve the utilization rate of oral health services. [ABSTRACT FROM AUTHOR]

Dramaturgical and cultural theory emphasize the normative and limiting role of social and cultural scripts on individual emotional cognition and expression. Traditional Chinese culture provides teachers with the role script of a moral personality and a social atmosphere of respecting teachers and valuing education. In daily teaching life, most teachers' body demeanor consciously abides by the requirements of cultural scripts, with their emotional expression targeted at the organizational orientation. The pleasurable emotional experience of performers can guide them to perform much deeper in accordance with the script requirements. Due to the constraints from institutional norms, cognitive biases, insufficient cooperation from fellow cast members, moving beyond the original roles, and performing mistakes, performers may experience negative emotions of sadness, worry, anger, and regret, which leads to such behaviors as giving up or self-preservation, as well as shallow and selective performances. Therefore, it is suggested to reshape the cultural script of respecting teachers, which needs to build an emotional culture with respect and trust; care about teacher's emotion and guide them in deep immersive performance; and take emotional reflection as an opportunity to improve the presentation of teacher's roles on the school stage. [ABSTRACT FROM AUTHOR]

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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.)

Copyright of Cyber Security & Data Governance is the property of Editorial Office of Information Technology & Network Security 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 Pearl River is the property of Pearl River 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.)

Copyright of Chinese Journal of Aesthetic & Plastic Surgery is the property of Chinese Journal of Aesthetic & Plastic Surgery 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.)

Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) 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.)

目的 观察冠心病患者冠状动脉支架置入术 (PCI) 后电针刺激双侧内关穴、郄门穴的临床效果。 方法 选取冠心病PCI后患者348例，随机分为电针组167例、非电针组155例。两组均接受标准的药物治疗，电针 组给予电针刺激双侧内关穴、郄门穴，每周治疗3次，共24周。两组治疗后行冠脉造影，记录支架内再狭窄 (ISR) 发 生情况，ELISA法检测血清S100A4。治疗后随访至少12个月或以主要心血管不良事件 (MACE) 为随访终点，比较两 组的生存时间及 MACE 发生情况。结果 电针组、非电针组分别发生 ISR 15 例 (8. 98%) 、39 例 (25. 16%) ，两 组比较 P<0. 05。治疗前后电针组血清S100A4水平分别为 (515. 06 ± 13. 24) 、 (412. 07 ± 14. 56) ng/mL，非电针组分 别为 (513. 06 ± 14. 24) 、 (510. 91 ± 13. 01) ng/mL；与治疗前比较，治疗后电针组血清 S100A4水平降低，且低于非电 针组治疗后 (P均<0. 05) 。电针组MACE发生率为10. 18%，非电针组为25. 81%，两组比较P<0. 05。电针组生存时 间为 (10. 11 ± 0. 87) 月，非电针组生存时间为 (7. 55 ± 0. 64) 月；两组比较P<0. 05。结论 电针刺激双侧内关穴、郄 门穴可以有效降低冠心病患者 PCI后 ISR 的发生率、同时有助于改善患者的预后，可能与其降低血清 S100A4水平 有关。 [ABSTRACT FROM AUTHOR]

Based on the perspective of educational phenomenology, this paper examines how teachers爷 moral behavior beneficial to the physical and mental development of students occurs in the teacher-student communication. It finds that in the immediate and lively educational situation, teachers' moral instincts, such as “ perceptual knowledge" and “ conscience", as another form of knowledge, have a certain priority in triggering teachers' moral behavior; and that the occurrence of teachers' moral behavior has the characteristics of emotional priority, autonomy and self-discipline of personality, and the leading of concept. Therefore, teachers should be guided to enhance their awareness of moral instincts by means of self-narrative through emotional experience; teachers should take autonomy and self-discipline as the criteria to give full play to their dominant position in the cultivation of morality; teachers should be guided to carry out conscious moral practice based on the concept of what ought to be. [ABSTRACT FROM AUTHOR]

目的 调查临床护士实践《成人经鼻胃管喂养临床实践指南》(以下简称《指南》)的现状,为规 范护理人员鼻饲操作提供参考。方法 以《指南》为指导自行编制问卷,采用便利抽样法对浙江省32所医院的 435名临床护士进行横断面调查。结果 共回收有效问卷435份。问卷总体平均得分率及胃管置管维度、鼻饲 喂养维度和并发症监测与管理维度平均得分率分别为58. 82%、 62. 86%、 61. 67%和53. 89%。不同职称、不同 工作年限、不同医院等级、不同科室及是否参加过鼻饲护理培训的护士得分比较,差异有统计学意义( P < 0. 05)。多元线性回归分析显示,所在科室及是否参加过鼻饲护理培训是护士实践《指南》总分的影响因素( P < 0. 05)。结论 临床护士实践《指南》的情况总体欠佳, ICU护士和参加过鼻饲护理培训的护士实践《指南》的情 况好于其他护士,护理管理者应建立和完善鼻饲护理培训体系,尤其在并发症监测与管理方面,以提高鼻饲护 理质量。 [ABSTRACT FROM AUTHOR]

Copyright of China Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS 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.)

As the dominant submerged macrophytes in Poyang Lake,the winter buds of Vallisneria natans provide food for wintering waterbirds. In order to quantify the effects of water level fluctuation on the habitat area of Vallisneria natans in Poyang Lake,a numerical model was developed by integrating an EFDC hydrodynamic model and habitat suitability curves. The habitat of Vallisneria natans in Poyang Lake was continuously simulated since the 175 m impoundment of the Three Gorges Reservoir in 2008. The quantitative response functions between potential habitat area and water level at Xingzi gauge station were developed for two habitat criteria:① suitable habitat based on suitability curves and ② regions with water depth≤4 m where Vallisneria natans can grow. It was found that potential habitat area of Vallisneria natans is maximized when the water level at Xingzi gauge station is around 15 m,producing a suitable habitat area is about 1 703 km2 and an area with water depths≤4 m is about 2 336 km2. The impacts of Three Gorges Reservoir and proposed Poyang Lake Lock on the potential habitat area of Vallisneria natans were analyzed. The operation of Three Gorges Reservoir could prevent habitat area getting too small,which could guarantee habitat stability. However,the fluctuation of habitat area decreases significantly,with standard deviations of habitat area declining 27% and 47% for potential suitable habitat and regions with water depth≤4 m respectively compared to its pre-operation. For the proposed Poyang Lake lock,in order to decrease its negetive effect on Vallisneria natans habitat,the recommended operation water level during its refill period should be lower than 16 m,and the water level during the refill period of Three Gorges Reservoir should be higher than 13.5 m. This operation results in a reduction in suitable habitat area by less than 20% from the maximum (1 703 km2),and in a reduction in the area of regions with water depth≤4 m less than 10% from the maximum(2 336 km2). The quantitative influence of water level fluctuation on the potential habitat area of Vallisneria natans in Poyang Lake has been clarified,and the quantitative basis for the conservation of Poyang Lake ecosystem under the modified regime of flow and sediment was provided. [ABSTRACT FROM AUTHOR]

Pain diagnosis and management benefit the development of objective assessment of nociception during general anesthesia. In the past decades, research addressing this issue has focused on monitoring changes in the autonomic nervous system and monitoring electroencephalograph. The indicators for monitoring changes in the autonomic nervous system include analgesia nociception index, skin conductance, surgical pleth index and pupil diameter. This article introduces the most important developments and usages of current monitoring methods for noxious stimulation, which have their own advantages and disadvantages. There are currently no validated objective assessment of nociception that can be recommended for clinical use. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Aesthetic & Plastic Surgery is the property of Chinese Journal of Aesthetic & Plastic Surgery 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.)

The morality of modernity has gradually abandoned the traditional classical virtue ethics emphasizing personal cultivation and internal purpose, and takes the external interests such as efficiency and practicality as its value orientation. Standardized by the institutionalization of modernity, the traditional moral connotation of the role of teachers in China is gradually declining. Alasdair MacIntyre traces the traditional virtue ethics from three stages and provides a referable theoretical model for restoring the spiritual force of morality. In the light of MacIntyre's explanation of virtue, three progressive dimensions of teachers-morality are constructed: teacher education practice should pay attention to the value orientation of internal benefit;a teacher should become a person with “virtue" and a teacher should surpass the traditional achievement of virtue in inheriting history and culture. [ABSTRACT FROM AUTHOR]

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic 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 West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology 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 Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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.)

In order to realize the educational equity and "the balanced development between city and countryside", a series of policies on promoting the construction of the rural teacher team have been issued from the central government to the local ones in recent years. The result of documental analyses shows that the policies on promoting the construction of the rural teacher team are mainly based on the principle of distributive justice and directed by utility, and that they, to some degree, have stabilized rural teachers and boosted their development. However, very few people like to teach in the countryside and stay there all their lives, which has hindered the development of rural education. It holds that the theory of plural justice and the spiritual values of teachers should be taken into consideration in policy making, and that the spiritual support should be given to rural teachers by remolding their professional identities and giving attention to their emotional needs. Finally, material help must be integrated with spiritual support so that policy can achieve its effectiveness. [ABSTRACT FROM AUTHOR]

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Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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.)