Homogenization Construction of Three-Level Teaching Bases for General Practice Medicine Under the Internet+Model

With the continuous expansion of medical student enrollment,the number of clinical teaching bases is gradually increasing.However,there are significant differences in clinical teaching management models and teaching levels among different bases.Most clinical teaching bases have incomplete teaching management systems,inadequate teaching management institutions,insufficient teaching personnel,and inadequate implementation of teaching rules and regulations.This article combines the construction practice of three-level clinical teaching base of the General Medicine College and the First Affiliated Hospital of Xi’an Medical University.We establish a standardized management system for the three-level clinical teaching base;implement a teaching supervision system and strengthen the monitoring of teaching quality;adopt multiple evaluations to test the effectiveness of clinical teaching implementation;explore the path of homogenization construction of teaching bases in terms of unified teacher training,promoting the development of teacher teaching abilities with equal quality and excellence,and providing a reference for improving the quality of medical talent training.

Corrigendum: Research Progress of circRNAs during Epithelial-Mesenchymal Transition of Hepatocellular Carcinoma

Correction The affiliation in the original publication(https://www.doi.org/10.26689/par.v8i2.6010)is incorrect.The original affiliation was:Yuqing Li1,Cuicui Ren1,Yu Cai2,Chang Tian2,Yuanyuan Jia2,Ge Wu1*1Xi’an Medical University,Xi’an 710000,China 2Faculty Development and Teaching Evaluation Office,The First Affiliated Hospital of Xi’an。

Current Situation and Improvement Strategies of Teaching Engagement by Teachers in Higher Medical Colleges Under the Background of“New Medical Education”

The“New Medical Education”is a new requirement for the development of medical education in the new era.As a key and core element of the construction of the“New Medical Education,”the engagement in teaching work of university teachers is a key issue that determines the level of teaching development of university teachers and affects the quality of talent cultivation in universities.Using the literature review method,this study analyzed 39 relevant literatures retrieved from China National Knowledge Infrastructure(CNKI)from 1997 to 2023.The concept,connotation,current situation,influencing factors,and improvement strategies of teaching engagement by university teachers were reviewed and summarized.The results showed that the issue of teaching engagement by university teachers has not received high attention in the field of higher education,especially in higher medical education,which has not yet been reported.Although the overall number of literature is not large,some of the conclusions have important implications for the next research on the influencing factors and mechanisms of double-qualified teacher engagement in higher medical colleges.

Exploration of Teaching Development Strategies for Double-Qualified Teachers in University- Affiliated Hospitals Based on Role Conflict Theory

This study draws on the classic theories and research achievements of university teacher development,and from the perspective of role conflict in social psychology,proposes policy recommendations for the development of clinical teachers in medical colleges,including following different stages of teacher development and designing teaching development strategies at different levels;designing the content and form of teaching development activities to meet the temporal and spatial needs of clinical teachers;and building an academic community for clinical teachers to promote the creation of teaching development behaviors.

Research Progress of circRNAs during Epithelial- Mesenchymal Transition of Hepatocellular Carcinoma

Hepatocellular carcinoma is prone to invasion and metastasis.It often receives a low diagnosis rate in the early stage but has an extremely high mortality rate.Epithelial-mesenchymal transformation(EMT)is a key factor in promoting tumor cell invasion and metastasis.Circular RNA(circRNA)is involved in regulating EMT in hepatocarcinoma cells through multiple pathways,thereby affecting the occurrence and progression of hepatocellular carcinoma.This article mainly reviews the research progress of circRNA related to EMT core transcription factors,circRNA that promotes EMT in liver cancer,and circRNA that inhibits EMT in liver cancer.

Theoretical Analysis and Practical Reflection on the Role Conflict of Double-Qualified Teachers in University-Affiliated Hospitals

Taking role conflict as the starting point,this article examines and reflects on the development of clinical teachers.In the process of the occurrence,development,and resolution of role conflicts among clinical teachers,there are many hidden issues related to the development of clinical teachers.The development of clinical teacher teaching and role conflict management contain similar educational philosophies and practical issues.This study draws on classic theories and research achievements in the development of university teachers and conducts theoretical analysis and practical reflection on the development of clinical teachers in medical colleges from the perspective of role conflict in social psychology.Policy recommendations are proposed,including strengthening the construction of teaching systems at the hospital organizational environment level,enhancing the role identity and teacher beliefs of clinical teachers,promoting their teaching development and academic learning,and ensuring their normal teaching investment;promoting leadership support at the level of interpersonal interaction and leveraging the role of colleague support in alleviating role conflicts;enhancing individual teacher beliefs,teacher role learning,and role skills.

Situation and Development Path of Humanistic Education in Medical Colleges and Universities in China

Humanistic education,as the“internal structure”of medical education,attempts to cultivate medical students’humanistic knowledge,ability,and comprehensive quality as well as makes adjustments with the evolvement of medical education.The global medical education reform has undergone three stages:expert medicine,clinical practice medicine,and public service medicine.Public service medicine,which took place in the 21st century,is a system-based and competency-oriented education,highlighting the construction of a health service system with medical and educational cooperation as well as the cultivation of medical students’comprehensive quality.China’s medical education started late and has a weak foundation with many twists and turns.Through the rapid development of reform and opening-up,China has narrowed the gap with international medical education and established a perfect medical curriculum system.China has successively promulgated a number of documents,such as the“Outline of Reform and Development of Medical Education in China”and the“Opinions on Strengthening the Collaboration between Health Departments and Education Departments to Implement the Doctor of Excellence Education Training Program 2.0,”with the goal of cultivating high-quality excellent medical talents.Medical students in colleges and universities are senior talents in medical training,health care services,and medical research.Their humanistic quality is not only related to the growth of medical talents,but also the quality of medical services.This paper analyzes and discusses the problems encountered in improving humanistic education and looks forward to providing reasonable as well as effective solutions to the difficulties faced by humanistic education in the new era through comparative research.

Transition metal embedded in nonmetal-doped T-carbon [110]: A superior synergistic trifunctional electrocatalyst for HER, OER and ORR

The design of efficient and low-cost multifunctional electrocatalysts for hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) is critical for the development of clean energy. Two-dimensional(2D) carbon-based nano-materials are becoming more and more popular in heterogeneous catalysis due to their cost-effective and multi-scale tunability as single-atom catalysis(SACs) substrates. In this paper, by using first-principles calculation, we designed and demonstrated a novel macropore T-carbon [110](TC) monolayer as 2D electrocatalyst substrate for HER/OER/ORR, and the synergistic modification of the transition metal and nonmetal atoms(TM-X) were investigated to enhance the multifunctional electrocatalytic performance. We screened out the Co embedded in N-doped TC(Co3@N-TC) from 30 TM@X-TC monolayers as a trifunctional electrocatalysts, which exhibits superior performance for HER/ORR/OER on both thermodynamic and kinetic scales, and with excellent thermal and electrochemical stability. Then, the TC monolayer is naturally macropore with a diameter of 5.36 A and exhibits excellent adsorption capacity for the intermediates and products of the redox reactions. Moreover, we revealed the origin of the electrocatalytic activity using the crystal orbital Hamilton population(COHP) and the molecular orbitals(MOs). The d orbital of Co3@N-TC is significantly hybridized with the p orbital of the intermediates, so that the lone electrons initially occupied in the antibonding state pair up and occupy the downward bonding state, allowing *OH to be appropriately adsorbed onto the TC monolayer. This work not only demonstrates that the TM@X-TC monolayer is a superior synergistic trifunctional electrocatalyst, but also reveals a macropore monolayer material with potential applications in electrocatalysis.

Comprehensive analysis of pure-quartic soliton dynamics in a passively mode-locked fiber laser

The understanding of soliton dynamics promotes the development of ultrafast laser technology. High-energy purequartic solitons(PQSs) have gradually become a hotspot in recent years. Herein, we numerically study the influence of the gain bandwidth, saturation power, small-signal gain, and output coupler on PQS dynamics in passively mode-locked fiber lasers. The results show that the above four parameters can affect PQS dynamics. Pulsating PQSs occur as we alter the other three parameters when the gain bandwidth is 50 nm. Meanwhile, PQSs evolve from pulsating to erupting and then to splitting as the other three parameters are altered when the gain bandwidth is 10 nm, which can be attributed to the existence of the spectral filtering effect and intra-cavity fourth-order dispersion. These findings provide new insights into PQS dynamics in passively mode-locked fiber lasers.

Minimizing pest aluminum in magnesium for the production of high-purity titanium

It is practically difficult to find titanium sponges with low and stable aluminum impurities on the market even though it is the precondition to prepare high-purity titanium. Analysis indicates that almost all the aluminum impurities in the titanium sponge are inherited from the magnesium used to reduce titanium tetrachloride. However, it remains elusive for decades why magnesium produced through the silicothermic reduction method contains a high content of aluminum impurities with large fluctuations. By recourse to thermodynamic calculations and comparative experiments, we demonstrate that fluorite, a material used as a catalyst in the silicothermic reduction method to produce magnesium, is the chief culprit for the pest aluminum and propose a mechanism to rationalize the observed phenomena. Our findings indicate that one practical way to produce qualified magnesium for the production of high-purity titanium is to abandon fluorite during the production of magnesium with the silicothermic reduction method.

Construction and Practice of Teaching Staff and Teaching Quality Monitoring System in University Affiliated Hospitals Under the Background of Education Informatization

Objective:To build a set of teaching staff construction and teaching quality monitoring system suitable for clinical practice teaching in affiliated hospitals of medical colleges,achieve continuous improvement of clinical education and teaching level,and ensure the quality of medical education talent cultivation.Methods:A modern clinical practice teaching quality monitoring system is constructed based on organizational structure construction,teaching staff system construction,quality control system construction,and information platform construction,combined with external audit and evaluation.Results:The hospital has established a Faculty Development and Teaching Evaluation Office specifically responsible for the cultivation of clinical teachers and the evaluation and supervision of teaching quality.A relatively complete teacher construction and teaching quality monitoring system has also been established for clinical practice teaching,thus achieving integration with the school’s quality control system in terms of management mechanism.At the same time,a set of teaching quality control mode based on the“Internet+”platform has been created by means of informatization.At present,this mode has won three national computer software copyrights and two second prizes for school-level teaching achievements.Conclusion:Through five years of practice,an“Internet+”teaching quality evaluation and monitoring system with the characteristics of teaching hospitals affiliated to local medical colleges has been established.In order to further standardize the training system of clinical teachers in affiliated hospitals,achieve self-monitoring and self-improvement in terms of teaching quality,and ensure the continuous improvement of clinical teaching quality,we will continue to promote the development of clinical teachers with quality and excellence,enrich the main team of quality monitoring,guide the transformation of the education mode from being“centered on teachers”to being“centered on students,”and realize the integration of internal and external quality monitoring systems.

儿童消化道磁力珠异物的临床特点及诊治探讨

目的探讨儿童消化道磁力珠异物的临床特点及治疗方式。方法回顾性分析2018年9月至2020年5月中国医科大学附属盛京医院收治的13例消化道磁力珠异物患者临床资料,分析其一般资料、临床表现、辅助检查及治疗过程,并复习相关文献,探讨最佳治疗方案。结果13例患者从摄入异物至医院就诊平均时间为4.9 d,临床症状依次为腹痛(7/13,53.8%)、恶心呕吐(6/13,46.2%)、发热(2/13,15.4%)、咳嗽(1/13,7.7%)、血便(1/13,7.7%);2例(2/13,15.4%)无明显临床症状。腹部X线检查显示异物位置:2例(2/13,15.4%)位于上消化道,11例(11/13,84.6%)位于下消化道。13例中,10例予手术治疗,术中发现肠穿孔8例(8/10,80%),其中4例(4/10,40%)伴肠坏死,2例(2/10,20%)瘘管形成伴梗阻,3例(3/10,30%)肠扭转;1例经内窥镜取出异物;2例经保守治疗后自行排出异物。结论误食多枚磁力珠异物可致严重消化道损伤,需要尽早明确诊断并积极治疗。

浮选过程中的泡沫夹带研究进展

细粒矿物浮选过程中,亲水的脉石矿物泡沫夹带进入精矿中,导致精矿品位降低。揭示泡沫排液及排脉石过程中的相关理论,可以为浮选泡沫结构及泡沫夹带行为的研究提供理论基础。浮选过程中的脉石泡沫夹带是一种普遍现象,脉石夹带回收率与精矿水回收率呈线性关系;两相泡沫排液受重力、毛细作用力(表面张力)、黏滞力控制,不同含液率的两相泡沫排液遵循不同的排液公式;三相泡沫的排脉石过程遵循对流—扩散模型,脉石的夹带回收率受三相泡沫排液速率及脉石颗粒浓度分布控制。浮选操作条件、亲水脉石的特性、矿浆特性以及泡沫结构是影响泡沫夹带的主要因素;优化浮选操作条件,改变浮选流程结构和改变药剂制度可以有效降低脉石的泡沫夹带,提高浮选选择性。未来,还需开发表征浮选三相泡沫特征的方法、装置或仪器,三相泡沫的结构及形态、疏水矿物颗粒与亲水脉石颗粒在泡沫中的运动路径及分布规律、浮选三相泡沫排液及排脉石的数学模型还需要进一步的细致研究。另外,降低脉石泡沫夹带的技术对于部分浮选体系虽有一定效果,但脉石的泡沫夹带尚难以消除,须开发一些革命性的技术。

锁骨钩钢板联合双股不可吸收线治疗新鲜Tossy Ⅲ型肩锁关节脱位

目的探讨锁骨钩钢板联合双股不可吸收线治疗新鲜TossyⅢ型肩锁关节脱位的临床疗效。方法将74例新鲜TossyⅢ型肩锁关节脱位患者随机分为观察组和对照组,每组37例。对照组采用锁骨钩钢板固定,观察组采用锁骨钩钢板联合双股不可吸收线固定。术后12个月评定两组肩关节活动度、疼痛VAS评分、肩关节功能优良率及并发症发生率。结果患者均获得12个月的随访。术后12个月,肩关节活动度观察组显著高于对照组(P <0. 01),疼痛VAS评分观察组显著低于对照组(P <0. 01);参照Karlsson标准评价疗效,肩关节功能优良率观察组高于对照组(97. 30%vs 75. 68%,P <0. 05)。观察组并发症发生率低于对照组,但差异无统计学意义(P> 0. 05)。结论锁骨钩钢板联合双股不可吸收线治疗新鲜TossyⅢ型肩锁关节脱位能够降低患肩疼痛,提高肩关节功能,且不增加并发症发生率,临床疗效满意。

沉积变质型黄梅磷灰岩工艺矿物学研究

利用矿物自动定量分析系统(AMICS)及偏光显微镜对黄梅沉积变质型磷灰岩开展了系统的工艺矿物学研究,并进行了浮选验证试验。研究结果表明:该磷灰岩中主要磷矿物为磷灰石(23.57%),主要脉石矿物为石英(26.32%)和钾长石(26.51%),次要的脉石矿物为白云石(12.12%)和方解石(3.68%);且磷灰石、石英、钾长石的嵌布粒度较粗,只有少量白云石和方解石以浸染的方式嵌布在胶磷矿内部;当矿石粒度度小于0.074 mm占57.71%时,磷灰石、石英和钾长石基本实现单体解离(解离度>80%);随后采用一粗一精浮选试验进行验证,发现在该磨矿粒度下,可获得91.84%的浮选回收率,且精矿中P_(2)O_(5)品位为35.77%。

新型不对称型双子季铵盐阳离子捕收剂的合成及其对石英的浮选行为研究

针对铁矿石反浮选工艺采用传统阳离子捕收剂十二胺时存在分选效果差、难溶于水等问题,制备了4种含有不同碳链长度的不对称型双子季铵盐捕收剂1-M-12、1-M-14、1-M-16、1-M-18。单矿物浮选结果表明,在相同试验条件下,新型不对称型双子季铵盐阳离子药剂中1-M-14、1-M-16、1-M-18的捕收能力大于传统阳离子捕收剂十二胺,具有浮选效率高、受pH影响小的特点。动电位测试结果与红外光谱分析测试结果表明,新型药剂与石英之间存在物理吸附和氢键作用。

Second phase effect on corrosion of nanostructured Mg-Zn-Ca dual-phase metallic glasses

Dual-phase metallic glasses(DP-MGs),a special member of the MGs family,often reveal unusual strength and ductility,yet,their corrosion behaviors are not understood.Here,we developed a nanostructured Mg_(57)Zn_(36)Ca_(7)(at.%)DP-MG and uncovered its corrosion mechanism in simulated body fluid(SBF)at the near-atomic scale utilizing transmission electron microscope(TEM)and atom probe tomography(APT).The 10-nm-wide Ca-rich amorphous phases allow oxygen propagation into the DP-MG,resulting in a micrometer thick hydroxides/oxides layer.This dense corrosion layer protects the DP-MG from further corrosion,enabling a corrosion rate that is 77%lower than that of Mg(99.99%purity).

Misperception and pro-environmental behaviors of the Chinese public toward air pollution

This study analyzes the misperceptions of the Chinese public about air pollution levels and other potential predictors of participation in pro-environmental behaviors based on the 2013 Chinese General Social Survey(CGSS).In this paper,misperception is defined as the difference between subjective perceptions of air pollution and measurements through objective monitoring.We find that pessimistic respondents are more likely to participate in pro-environmental behaviors.The media use and evaluation of the environmental performance of the local government significantly stimulate pro-environmental participation.The results reveal that knowledge and concern about the environment can mitigate the negative effect of optimistic bias on pro-environmental behaviors.In regions where environmental information is widely available,environmental pessimists are especially more likely to participate in such activities.This finding suggests that the government should provide not only accurate information about environmental pollution but also relevant education to enhance the environmental awareness of the public and stimulate pro-environmental participation.

Spatio-spectral dynamics of soliton pulsation with breathing behavior in the anomalous dispersion fiber laser

We have numerically and experimentally observed the soliton pulsation with obvious breathing behavior in the anomalous fiber laser mode-locked by a nonlinear polarization rotation technique.The numerical study of the soliton pulsation with breathing behavior was analyzed through the split-step Fourier method at first,and it was found that the phase difference caused by the polarization controller would affect the breathing characteristics.Then,taking advantage of the dispersive Fourier transform technique,we confirmed the breathing characteristic of soliton pulsation in the same fiber laser as the simulation model experimentally.These results complement the research on the breathing characteristic of soliton pulsation.

Fuel consumption,vehicle quantities,and total factor inefficiency in China

Scale-controlling and technology-upgrading measures are considered effective for mitigating vehicle exhaust emissions.This study investigated the impacts of fuel consumption and vehicle quantities on the total factor inefficiency in China’s highway transport sector during 2011-2015,based on the Bounded Adjusted Measure Data Envelopment Analysis(BAM-DEA)model combined with natural and managerial disposability scenarios.The results showed that the average global inefficiency(GIE)score of the exhaust emissions(CO,HC,NOx,and PM)was 0.41 under the assumption of natural disposability and 0.23 in the managerial disposability situation.Moreover,the main causes of total factor inefficiency scores from the perspective of natural disposability were road length,fuel consumption,and exhaust emissions,whereas those from a managerial disposability perspective were road length and exhaust emissions.These two results suggested that environmental efficiency can be promoted by increasing the quantities of clean-energy vehicles and high-quality gasoline/diesel consumption.In terms of the spatial distribution of GIE,the scores showed a decreasing trend from China’s northwestern inland regions to its southeastern coastal regions under both natural and managerial disposability.Environmental efficiency in some provinces(such as Yunnan)demonstrated good progress under managerial disposability,but other regions did not(such as Hebei and Ningxia).Thus,each province should choose appropriate strategies regarding vehicle quantities and fuel consumption according to the technical inefficiency scores of differing disposability situations.