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  • Imaging and Clinical Characteristics of 8 cases of COVID-19 Complicated with Pneumomediastinum in Children

    Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2024-04-18 Cooperative journals: 《中国全科医学》

    Abstract: Background The imaging of COVID-19(COVID-19) in children is different from that of adults,mainly manifested as subpleural ground glass shadows,patchy high-density shadow,and solid shadow,and rarely complicated with pneumomediastinum. The formation of a large number of emphysema can seriously affect the respiratory and circulatory function,resulting in obvious wheezing and hypoxemia,which need to be actively treated. Objective To analyze and summarize the imaging and clinical characteristics of COVID-19 with pneumomediastinum in children. Methods A retrospective analysis was conducted on 8 pediatric patients with COVID-19 complicated with pneumomediastinum admitted to the Department of Pediatrics at Jingzhou Hospital affiliated with Yangtze University from December 1,2022 to January 30,2023,including age,gender,imaging,clinical characteristics,and treatment. Results 8 children were 3.5 years to 12 years,with a female ratio of 3 ∶ 5. High Resolution CT Scan in all children showed double lung infection combined with pneumomediastinum, and multiple emphysema involved the neck and chest wall. The pulmonary manifestations were various:subpleural ground glass shadow,consolidation,tree bud sign,vascular bronchial bundle thickening and bronchial wall thickening,grid sign,etc.,no large consolidation and "white lung" found. One case was observed to have a small amount of pleural effusion. In addition to fever and cough,the clinical manifestations were obvious shortness of breath,pulmonary auscultation,but dry or moist rales were not significant. Four children with mycoplasma infection were treated with azithromycin,and one with B. catarrhalis. was treated with azithromycin. All given oxygen therapy. A patient was treated with an invasive ventilator because traditional treatment was unable to alleviate her dyspnea and hypoxemia. The patient's leucocytes and hypersensitive CRP were significantly increased. After 3 days,the symptoms improved and the machine was successfully withdrawn. 5 cases were treated with intravenous immunoglobulin (IVIG),and 3 cases were treated with glucocorticoids. a week after the review of chest CT,pneumomethinum were completely absorbed,and lung lesions significantly improved. Conclusion Children with pneumomediastinum complicated by COVID-19 were mostly pre-school or school-age children,rare in infants. Pneumomediastinum can coexist with gas accumulation in the neck and chest wall. In addition,pulmonary lesions could involve the stroma or parenchyma,and both lungs were affected, with various manifestations. At the onset of the disease,there were obvious shortness of breath,active oxygen therapy was recommended. When the white blood cell count and hypersensitivity CRP significantly increase,close attention should be paid to respiratory conditions. IVIG and glucocorticoids may have positive effects,and if necessary,a mechanical ventilation should also be used.

  • Chronic Atrophic Gastritis Treated with Different Acupuncture and Moxibustion Therapies:a Network Meta-analysis

    Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2024-04-15 Cooperative journals: 《中国全科医学》

    Abstract: Background  Chronic atrophic gastritis is a common clinical precancerous lesion,which is prone to recurrent attacks and seriously affects the quality of life of patients. At present,Western medicine has limited effect in the treatment of chronic atrophic gastritis,while acupuncture has good results in the treatment of chronic atrophic gastritis,but which acupuncture therapy is the best still inconclusive. Objective  To compare the clinical efficacy among different acupuncture and moxibustion therapies on chronic atrophic gastritis by means of network Meta-analysis. Methods  The articals of randomized controlled trials for chronic atrophic gastritis treated with acupuncture and moxibustion therapies were searched from CNKI,Wanfang database,VIP database,CBM database,PubMed,Embase and Web of Science until April 30,2023 according tothe inclusion exclusion criteria. Literature quality assessment was based on ROB 2 bias assessment tool,network meta-analysis was performed using Rstudio software,and funnel plotting was used Stata software for publication bias risk assessment. Results  26 articles involving 10 interventions with a sample size of 2 068 cases were included. The results of network meta-analysis showed that in terms of clinical effective rate,there were five acupuncture therapies that were superior to conventional Western medicines,such as Western medicine combined with Acupoint injection,Catgut embedment in acupoint therapy,Western medicine combined with acupuncture,Needle warming therapy and Acupuncture(P<0.05). The SUCRA ranking result was Western medicine combined with Acupoint injection(0.86)>Catgut embedment in acupoint therapy(0.80)>Western medicine combined with acupuncture(0.67)>Needle warming therapy and Acupuncture(0.59)>Western medicine combined with thunder-fire moxibustion(0.58)>Acupuncture(0.48)>Western medicine combined with ginger separated moxibustion(0.40)>Thunder-fire moxibustion(0.31)>Western medicine combined with electroacupuncture(0.24)>Conventional Western medicine(0.06). In improving the efficacy of gastroscopy,there were five acupuncture therapies that were superior to conventional Western medicines,such as catgut embedment in Acupoint therapy,Needle warming therapy,Western medicine combined with acupuncture,Acupuncture and Western medicine combined with Acupoint injection(P<0.05). The SUCRA ranking results show:Catgut embedment in acupoint therapy(0.80)>Needle warming therapy and Acupuncture(0.72)>Western medicine combined with acupuncture(0.58)>Acupuncture(0.47)>Western medicine combined with Acupoint injection(0.41)>conventional Western medicine(0.01). In terms of pathological efficacy,there were five acupuncture therapies that were superior to conventional Western medicines,such as Catgut embedment in acupoint therapy and Needle warming therapy and Acupuncture(P<0.05). The SUCRA ranking results show:Catgut embedment in acupoint therapy(0.79)>Western medicine combined with Acupuncture(0.59)>Needle warming therapy and Acupuncture(0.53)>Acupuncture(0.52)>Western medicine combined with Acupoint injection(0.51)>Conventional Western medicine(0.06). Conclusion  Western medicine combined with Acupoint injection is preferred for patients with obvious clinical symptoms,while Catgut embedment in acupoint therapy is preferred for patients with no obvious symptoms. Catgut embedment in acupoint therapy can not only improve the clinical effective rate,but also improve the efficacy of gastroscopy and pathological than other acupuncture treatments.

  • Nursing care of a case of residual dizziness after reduction of otolith treated with ear point pressing pills combined with ear moxibustion device moxibustion

    Subjects: Nursing >> Nursing submitted time 2023-10-14

    Abstract: This article summarizes the nursing experience of a case of patients with residual dizziness after otoliths reduction treated by auricular point pressure pill combined with auricular moxibustion moxibustion.On the basis of routine treatment and nursing, nursing evaluation was carried out for the patient, and individualized TCM technical operation - ear moxibustion moxibustion method combined with auricular point pressure pill therapy was implemented for the patient, and intervention was carried out on the residual symptoms of dizziness, sleep quality and anxiety state of the patient.

  • Effect of bronze drum training on rhythm perception and executive function of Zhuang drummers

    Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-10-09 Cooperative journals: 《心理学报》

    Abstract: Rhythm, as the temporal variation in a sequence of sounds, plays a crucial role in understanding musical melodies and speech patterns. Previous research has shown that musicians exhibit superior abilities in processing music-related and unrelated information and show advantages in executive function. However, the specific component of musical training (pitch or rhythm) that yields these benefits remains unclear, largely due to the intertwined nature of pitch and rhythm training. This study seeks to understand the impact of exclusive rhythmic training on cognitive abilities, leveraging the unique opportunity provided by Zhuang drummers who have undergone bronze drum training without any formal melodic training. The bronze drum is the artistic treasure of Zhuang nation.As a unique form of local instrumental music performance, Donglan bronze drum music pursues the asynchronicity and variability of rhythm, and has more characteristics than the music art synchronized with the collective, which requires a higher level of rhythm perception. The most distinctive feature of Donglan bronze drum music is the rich rhythm changes, which fully reflects the superb skill level of the players. Therefore, long-term bronze drum training may promote the drummer's music perception and higher cognitive function development. We conducted six experiments involving 52 participants from Lan Yang, a small town in Guangxi Donglan County. Among them, 26 individuals Mean age = 49.88 ± 15.98 years had long-term bronze drum training but no other musical training, while the other 26 Mean age = 47.77 ± 12.62 years had no music training at all. Participants underwent tasks in rhythmic and pitch change detection, combined rhythmic-pitch change detection, pitch-based auditory Stroop, auditory n-back tasks, and a cued alternating runs switching task. The results indicated that the Zhuang bronze drummers exhibited superior rhythm perception compared to the control group, with no discernable difference in pitch perception, suggesting the bronze drum training may enhance auditory temporal fine-tuning. Regarding executive functions, the drummers outperformed the control group in inhibitory control and working memory updating. However, rhythm perception was unrelated to switching performance, aligning with the “Unity and Diversity of Executive Functions” hypothesis that expertise in rhythm perception doesn't uniformly improve all cognitive abilities. This study demonstrates that the rhythmic perception ability of Zhuang bronze drummers is an interplay of cognitive factors and Zhuang musical culture exposure. The long-term bronze drum training significantly enhances rhythm perception and certain executive functions, revealing the non-aesthetic value of bronze drum performance. The unique “variation rhythm” style may have originated from the imitation of “frogs clamour”, a feature of the local bronze drum music culture.

  • Evaluation of Users' Satisfaction on WeChat Learning Platforms Based on the Fuzzy AHP Methodology: The Case of Dida Reading

    Subjects: Library Science,Information Science >> Library Science submitted time 2023-07-26 Cooperative journals: 《图书情报工作》

    Abstract: [Purpose/significance] This paper constructs a framework for evaluating users' satisfaction on WeChat learning platforms and analyze the fitness of platform functions with users' demands, aiming to provide guidelines to relevant practitioners on how to evaluate such learning platforms and recommendations on how to improve.[Method/process] Considering unique features of WeChat learning platforms, the paper adopted the Fuzzy AHP method to build the model of users' satisfaction evaluation. Using Dida Reading as an example, the paper collected data by surveys and conducted an empirical research.[Result/conclusion] It is found that users' evaluation on User Interface is "very good"; their evaluations on criterions including System, Service, Content, Interaction are "good"; their evaluation on Feedbacks is "fair"; their overall evaluation of the platform is "good". Such learning platforms are recommended to improve in teaching quality, service quality, user interface design and feedback mechanisms.

  • Information Security Risks Caused by Cloud Service Agreement and Suggestions for Library and Information Community

    Subjects: Library Science,Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》

    Abstract: [Purpose/significance] The application of cloud service in the library can effectively improve the data storage and computing capacity of the library, but it also brings a lot of information resource security problems, and the non-standard cloud computing service agreement aggravates the information security risks faced by the library.[Method/process] This paper focused on the information security clauses in the cloud service agreement, selected 8 cloud services on behalf of the operator's service agreement as a sample, and analyzed the information security risks that exist in the current cloud service agreement terms in depth from data collection, data storage, data transmission, data access and service security.[Result/conclusion] The information security risks that library application cloud services may face include:the lack of cloud service agreement content, the difficulty of obtaining accurate protection of user information security; the vague description of cloud service agreement, the establishment of a sound security guarantee mechanism; the formulation of cloud service agreement are more conducive to cloud providers, so user rights are vulnerable. In this environment, the library should further clarify the ownership of library user data and emphasize the security of library information resources.

  • Trends, Practices and Policy Suggestions of Innovation-driven Digital Transformation of Social Services

    Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》

    Abstract: The report of the 19th National Congress of the Communist Party of China clearly pointed out that ‘the principal contradiction in Chinese society has evolved into one between unbalanced and inadequate development and the people's ever-growing needs for abetter life’.In order to solve this contradiction, it is urgent to grasp the strategic opportunity of innovation-driven digital transformation to promote the high-quality development of social services. The article has studied and judged the trends of innovation-driven digital transformation of social services such as government services, education services, medical and health services, elderly care services, employment services and public security services, combed the policy practices of developed countries and organizations to promote the innovation-driven digital transformation of social services, and summarized the achievements of innovation-driven digital transformation of social services in China, then clarified the development views and put forward the policy suggestions of China’s innovation-driven digital transformation of social services, namely, (1) Build a technological innovation system for the digital transformation and development of social services; (2) Promote innovation-driven digital transformation of government service process reengineering; (3) Promote the innovation-driven digital transformation and development of public services; (4) Establish a policy and legal environment for the innovation-driven digital transformation of social services.

  • 无边界职业生涯下职业成功的诱因与机制

    Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》

    Abstract: As a frontier topic in the field of career research, career success has garnered extensive attention from organizational scholars and practitioners. By systematically clarifying its concept, measurement, antecedents, consequences, and mechanisms, this study summarizes and evaluates relative research at home and abroad. Future research should focus on career success in the era of the boundaryless career, develop the concept and measurement of career success in the Chinese organizational context, examine the antecedents of career success from the trait activation theory, examine the consequences of career success based on its value, and explore the contingent role of Chinese indigenous culture.

  • 元刻板印象的效价与效应相回馈吗?

    Subjects: Psychology >> Social Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》

    Abstract: The term meta-stereotype refers to the beliefs of in-group members regarding the stereotypes that out-group members hold about them. Its valence can be positive or negative, and its effects can also be positive or negative. Previous researchers have held the view that the valence and effects of meta-stereotype conform to the “rewarding principle.” In other words, positive meta-stereotype activation would have a positive effect, and negative meta-stereotype activation would have a negative effect. However, recent studies, have found that this relationship was not consistent. Up to now, the nature of the relationship between the valence and effects of meta-stereotype is still a matter of debate. For the negative meta-stereotype activation, its threat effect conforms to the rewarding principle, whereas the reactance effect does not. The threat effect of the negative meta-stereotype is that its activation could result in psychological conflict for individuals engaged in social situations. This may induce them to face a loss of cognitive balance and experience anxiety and stress, resulting in negative consequences. In contrast, it is possible for the activation of negative meta-stereotype to have a positive effect, that is, the reactance effect. When the negative meta-stereotype is activated, individuals perceive that they are being negatively evaluated by the out-group members. They may act to refute the negative evaluation. They would then display positive behaviors in a way to maintain a positive in-group image or prove their own abilities. It was found that the threat and reactance effects of negative meta-stereotype differ in the research scope, mechanism, and interventions that would eliminate the negative effects of meta-stereotype. For the positive meta-stereotype activation, its boost effect conforms to the rewarding principle, whereas the choking effect does not. In general, the positive meta-stereotype reflects the positive evaluation by the out-group to the in-group members; that is, it contains a number of positive characteristics. Therefore, the activation of the positive meta-stereotype can lead to a boost effect. Specifically, when individuals feel that they are positively viewed by the out-group members, they not only feel better about themselves, but also are encouraged to give back to other out-group members in helpful, constructive way. In contrast, positive meta-stereotype activation may also have a negative effect; that is, the choking effect. If individuals perceive that the out-group members hold very high expectations of them, they may feel substantially more pressure. This can bring about undesirable outcomes. They might focus too intensely on themselves, or even feel worry and doubt their own abilities, and subsequently perform badly. After comparing previous studies of the boost and choking effects of positive meta-stereotype, it was found that the differences between them were in the research scope, mechanism, and the mode of activation. Based on the analysis of the four effects mentioned above, it appears that the effects of meta-stereotype activation of different valences are influenced by a variety of factors at the individual and the group levels. Among them, the individual-level factors are the difficulty of retrieving the meta-stereotype, the internal resources, the degree of meta-stereotype personalization, and the impression management motivation; the group-level factors include group social status. Although research on meta-stereotype has gradually expanded, it still mainly focuses on the threat effect of the negative meta-stereotype and the boost effect of the positive meta-stereotype respectively. Studies on the reactance effect of the negative meta-stereotype and the choking effect of the positive meta-stereotype are limited. Many issues remain to be addressed. Future research can further expand the fields and preconditions of the diverse effects activated by the negative and positive meta-stereotypes, explore the interventions to eliminate the negative effects of meta-stereotype, and investigate the role of meta-stereotype activation mode.

  • 部件启动范式下可成字部件的位置效应

    Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》

    Abstract: Several components in phonogram characters, such as ‘女’, ‘口’ and ‘马’, can be phonetic radical in the phonetic components’ location or semantic radical in the semantic components’ location. We call these components Chinese wordable components (or Chinese wordable radical), and such components must be a single Chinese character. The location and function of Chinese wordable components vary in Chinese characters. In theory, each wordable components can appear in different parts of Chinese characters. However, the same component appears in different locations of Chinese characters with different characterisation characteristics because of the assumption that the location of components follows orthographic rules, and the frequency of the components’ location is different. However, previous studies have failed to distinguish between components’ location and the frequency of components in various locations and did not explore the effects of wordable components in different locations.This study used the component priming paradigm, which can effectively explore the effect of components’ location on the cognition of Chinese characters. With regard to components that can appear in different locations of Chinese characters, this study investigated the roles of different parts in Chinese character recognition by matching the usage frequency of Chinese characters (all high-frequency characters), stroke numbers and other factors in the component priming paradigm. Experiment 1 adopted the component priming paradigm to investigate the function of wordable components in different locations in Chinese character recognition. The priming stimuli were wordable components of three locations (primary semantic radical, secondary semantic radical and phonetic radical). The target stimuli were Chinese characters that contained these wordable components in three locations. Subjects were asked to identify the true and false characters of the target Chinese characters. Experiment 2 adopted component priming and visual search paradigms to investigate the function of wordable components in different locations. The priming stimuli were similar to those in Experiment 1. The target stimuli were square pictures that contained four Chinese characters. Subjects were asked to determine the presence of true and false characters in the picture, and eye movement data were recorded.The following points were gathered from the results. Firstly, the priming effect of the wordable component in the phonetic radical’s location was stronger than that in the semantic radical’s location. Secondly, when the wordable components were applied as semantic radical, they only appeared in the primary semantic radical’s location rather than in the secondary semantic radical’s location. Lastly, the wordable components in the phonetic radical’s location promoted not only the cognition of Chinese characters containing the phonetic radical’s location components but also the cognition of Chinese characters containing the primary semantic radical’s location components. However, they hindered the cognition of Chinese characters containing the secondary semantic radical’s location components. When priming components appeared in the secondary semantic radical’s location, they had no effect on the Chinese characters containing related components.The study showed that in Chinese character cognition, the effect of component location includes the dual effect of the components’ location and the frequency of the components’ location.

  • 多元语言文化对个体情境下与社会情境下认知转换功能的差异性影响——来自锡伯族的证据

    Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》

    Abstract: Humans are quintessentially social, yet much of cognitive psychology has focused on the individual, in individual settings. The literature on joint action is one of the most prominent exceptions. Joint-action research studies the sociality of our mental representations by examining how the tasks of other people around us affect our own task performance. Executive functions are a family of general-purpose cognitive processes that allow us to regulate cognition. The main executive functions are inhibition, shifting, and updating of working memory. Growing evidence suggests that executive functions can be automatically activated in non-social contexts as well as social ones. It is necessary to test whether people automatically engage in doing the tasks their partners do even when it requires executive functions. The Xibe is one of the ethnic groups in China, mainly inhabits Liaoning, Jilin, and Xinjiang Uygur Autonomous Region. The “westward migration” separated the Xibe in Xinjiang and Northeast China and embarked on different development paths. Xibe living in Xinjiang is in a multilingual culture, which not only retains the Xibe language (part of the Tungus-Manchu group of the Altaic phylum), but also absorbs the language and culture of the surrounding ethnic groups, such as the Uigur and Kazak. While the Northeast Xibe merges with the Han ethnic group and gradually loses their own ethnic culture and language. The present study investigates the influence of multi-language and multi-culture on social cognitive function, using a task-switching paradigm to examine one of the core executive functions, which is switching. In Experiment 1, the classical cognitive switching task was conducted to compare cognitive flexibility between the Xingjiang Xibe and the Northeast Xibe. Participants performed either a parity task (odd or even) or a magnitude task (bigger or smaller than 5), according to the frame around the number (diamond or square). The results showed that Xingjiang Xibe have smaller switch costs in the RT measure and greater accuracy. Experiment 2 employed socially relevant stimuli (faces) to tap into the switching flexibility between 2 types of categories (age and gender) and replicated the cognitive benefits of Xingjiang Xibe. These results showed that Xingjiang Xibe has the switching flexibility advantage in individual setting. Experiment 3 compared the switching flexibility of Xingjiang and Northeast Xibe using task-switching paradigm. A switching task was distributed between two participants. Each participant performed only one of the tasks, and did nothing on the trials of the other. In the social condition, two participants shared a computer. Each performed his task on his trials, and did nothing on the trials of the other participant. In the solo (control) condition, there was only one participant, who passively viewed the stimuli when it was not his turn. There were evident switch costs in the social condition and Xingjiang Xibe showed bigger switch costs compared with the Northeast Xibe, which meant they were more automatically engaged in this joint-action situation. It might be argued that, in the social condition, participants were distracted by the presence of a partner, or that they were sometimes uncertain about whose turn it was, and these factors lowered their efficiency. These costs are referred as turn-taking costs. In order to address this issue, Experiment 4 isolated turn-taking costs from task-switching costs by adding a condition in which two participants took turns, but they performed an identical task. This condition didn’t result in switch costs, indicating that costs in Experiment 3 should be interpreted as switching costs. Experiment 5 applied eye test to further prove that Xingjiang Xibe had strong individual tendency to understand the others’ intentions. In summary, the results showed that multilingualism and multiculturalism have different effects on cognitive switching function, positive effect in individual context and negative effect in social context. The results of this study provide important inspiration for the construction of a multi-ethnic country.

  • Care bundles of Traditional Chinese Medicine for a super-aged patient after interventional treatment for acute arterial embolization of lower extremity

    Subjects: Nursing >> Nursing submitted time 2023-03-06

    Abstract: This paper summarized the care bundles of Traditional Chinese Medicine (TCM) for a super-aged patient after interventional treatment for acute arterial embolization of lower extremity. Comprehensive TCM nursing interventions such as Chinese herbal medical oral care, acupoint massage, ear-tip bloodletting therapy; comprehensive auricular technique, Bian-stone and?? penetration of Chinese herbal medicine were carried out. TCM care bundles based on syndrome differentiation may reduce the incidence of complications and relieve the clinical symptoms of the patient.

  • Nursing of four patients with acute pancreatitis after lower extremity endovascular intervention

    Subjects: Nursing >> Nursing submitted time 2022-10-21

    Abstract: This paper summarized the nursing measures for four patients with acute pancreatitis after lower extremity endovascular intervention, and provided a reference for the postoperative nursing of vascular intervention surgery. Key issues of nursing included psychological care, preoperative hydration, guidance of dietary, observation of illness condition, prevention of complications, nutrition support and medication care. There are two severe cases of acute pancreatitis, one of which eventually died due to multiple organ failure, and the other was cured after drug treatment. In addition, two mild cases of acute pancreatitis, which were cured after drug treatment. As rare angiographic complication, acute pancreatitis is not easy to be detected early. The possibility of acute pancreatitis must be considered when a patient presents with abdominal pain, elevated creatinine, or multiple organ failure following an interventional procedure. Early detection and diagnosis, and timely treatment are beneficial to improve the cure rate of postoperative complications.

  • 基于MF-DFA的西安昼夜复合高温事件 变化特征及影响因素

    Subjects: Geosciences >> Atmospheric Sciences submitted time 2022-01-21 Cooperative journals: 《干旱区地理》

    Abstract:采用随机重排去趋势波动分析(MF-DFA)和极点对称模态分解法(ESMD),对19552019年西安市昼夜复合高温事件变化特征进行分析。结果表明:(1)气象站点迁移,造成对西安市极端高温变化趋势低估。其中,最高温原始数据与订正序列阈值相同;订正后,最低温阈值相对偏低0.2~0.5 ℃。(2)MF-DFA、90.0%和95.0%阈值方案识别高温事件年代变化具有相似性,而99.0%阈值和相对阈值方案是结论不确定性的主要来源。(3)在变化特征上,西安市昼夜复合高温事件兼顾3.3~3.8 a年际波动和趋势变化,20世纪80年代中期,昼夜复合高温天数呈现显著增多。(4)赤道西太平洋海温异常,可作为西安市昼夜复合高温预警的关键海区。即赤道西太平洋海温异常偏高时,往往对应西安市昼夜复合高温多发期,并指出南亚高压偏北、西太平洋副热带高压西伸,是影响西安市持续昼夜复合高温的环流机制。

  • 不同生境芦苇根茎生长发育与根际微环境的比较研究

    Subjects: Environmental Sciences, Resource Sciences >> Other Disciplines of Environmental Sciences, Resource Sciences submitted time 2021-03-02 Cooperative journals: 《干旱区研究》

    Abstract:以临泽县4种生境(沙丘生境、盐渍生境、盐渍-沙丘过渡生境、沼泽生境)芦苇根茎和芦苇根际土壤为研究对象,测定不同生境下芦苇根茎生长发育指标、根际土壤微生物数量及水分、盐分含量,分析了不同生境下根茎生长发育与根际土壤微生物数量、土壤含水量及含盐量的关系。结果表明:(1)对比4种生境下芦苇根茎发育,从盐渍生境,到盐渍-沙丘过渡生境、沙丘生境,再到沼泽生境,根茎节间距呈缩短趋势,而节直径、根茎长度及不定芽数呈增长趋势,根茎含水量和根茎生物量、株高、基径也呈增加趋势。(2)根际土壤微生物数量在4种生境之间差异显著,盐渍生境下芦苇根际土壤真菌数量最多,细菌、放线菌数量最少;沼泽生境芦苇根际土壤真菌数量最少,细菌、放线菌数量最多。(3)相关性分析表明,芦苇根际土壤微生物数量对芦苇根茎数量特征的驱动作用不同。土壤细菌、放线菌数量、B/F值是芦苇根茎长度、根茎节直径、根茎生物量、根茎含水量、株高、基径的主要影响因子,土壤真菌是芦苇根茎节间距的主要影响因子。土壤细菌、真菌、放线菌、B/F是芦苇根茎不定芽数的主要影响因子。土壤细菌、放线菌、B/F值为正向驱动,真菌为负向驱动。

  • 乙烯对绞股蓝皂苷生物合成关键酶基因表达和皂苷含量的影响

    Subjects: Biology >> Botany >> Applied botany submitted time 2020-03-24 Cooperative journals: 《广西植物》

    Abstract:以药食两用植物绞股蓝为材料,研究了植物激素乙烯对绞股蓝皂苷生物合成关键酶基因表达及皂苷含量的影响。实验采用荧光定量PCR技术,检测了乙烯利处理后绞股蓝不同器官中皂苷生物合成关键酶基因GpFPS,GpSS和GpSE的表达水平;采用分光光度法及HPLC技术,测定了乙烯利处理对绞股蓝总皂苷和皂苷单体Rb1、Rb3和Rd含量的影响。结果表明:外施乙烯利能够不同程度地上调GpFPS,GpSS和GpSE基因的表达水平,且3个基因的表达模式在不同器官间不同,而在同一器官中相似。在乙烯利处理后3 d,所测各器官中的总皂苷含量与对照相比均有所上升,其中根、成熟叶和幼叶达到显著水平,但3个皂苷单体在不同器官中的增加或降低并不一致,以Rb3含量最高。该结果为探索利用植物激素调控绞股蓝皂苷次生代谢提供了参考。

  • Leader humor: Consequences and theoretical explanation

    Subjects: Psychology >> Management Psychology submitted time 2019-06-07

    Abstract: As an effective management tool, in recent years, leader humor has received extensive attention from organizational scholars and practitioners. After reviewing leader humor’s conception, consequences, and mechanisms, we summarize several theoretical mechanisms: the relational process, social exchange theory, social information processing theory, relational identification, positive emotion, stress relief, and leadership styles. Future research should explore the consequences of leader humor from the perspective of interaction and structure, and focus on the mechanism of leader humor based on social information processing theory. " "

  • Effect of Dong Chorus on the Executive Function of Dong High School Students

    Subjects: Psychology >> Cognitive Psychology submitted time 2019-05-20

    Abstract: " Considerable research suggests that musical experience and ability are related to various cognitive abilities. One aspect of cognition that may be related to musical training is executive function (EF), which involves a set of top-down processes that regulate behavior and cognition according to task demands. To date, many studies are investigating this relationship. However, results are mixed and difficult to compare because of not only the variety of EF components examined but also the variety of tasks used to measure EF and the variety of criteria used to categorize participants as “musicians” or “non-musicians.” Moreover, most studies focus more on Western music than Chinese folk music, which has its own unique expression and distinct musical character. Dong Chorus, which is the multipart folk chorus of the Dong people in Guizhou Province, holds an important and unusual position in Chinese polyphonic folk songs. This stature is due to their splendid artistry, long history that can be textually researched, and the great influence of their vivid artistic practice, which gained the favor of numerous musicians. However, only a few scholars have studied the folk songs from the perspective of cognitive psychology or by means of experiments. In this study, we divide EFs into three core components: inhibitory control, working memory, and cognitive flexibility in auditory and visual modalities. Dong musicians (n=32), Dong non-musicians (n=32), and the Han (n=32) high school students were involved in six experiments to test the effect of Dong Chorus on cognition and the existence and generality of the relationship between musical ability and EFs. Results showed that Dong musicians and non-musicians outperformed Han students in inhibitory control and memory updating in auditory and visual versions of EF tasks, but no significant difference existed among the three groups in terms of shifting, which proved the generality of cognitive advantages of Dong Chorus. Dong non-musicians outperformed Han students in inhibition and switching, which suggested the interaction between language and music. In summary, these results indicated that cognitive advantages associated with Dong Chorus are not limited to auditory processes, but they are limited to specific aspects of EF. This finding supports a process-specific (but modality-general) relationship between musical ability and nonmusical aspects of cognition. Protecting and developing the Dong Chorus are important.

  • 鄂伦春族的视空间工作记忆能力优势:生态环境和生产方式的影响

    Subjects: Psychology >> Cognitive Psychology submitted time 2018-09-07 Cooperative journals: 《心理学报》

    Abstract: 以鄂伦春族和汉族的高中生为被试, 采用简单存储任务和复杂广度任务, 并且引入材料复杂性变量, 考察鄂伦春族和汉族的高中生在视空间工作记忆能力上的差异, 探讨生态环境和生产方式对视空间工作记忆能力的影响。结果表明, 鄂伦春族学生在4个视空间工作记忆任务上的表现均显著好于汉族学生, 材料呈现的结构、数量和路径均不影响鄂伦春族学生在视空间工作记忆能力上的优势。整个研究表明, 鄂伦春族千百年来的生态环境和生产方式已经成为重要的生态变量, 影响其后代的视空间工作记忆能力。

  • 国外高水平高校智库运行机制与决策影响途径研究——以英国曼彻斯特大学创新研究所为例

    Subjects: Library Science,Information Science >> Information Science submitted time 2018-08-14 Cooperative journals: 《智库理论与实践》

    Abstract: [目的/意义]建设中国特色的新型智库已经成为推进国家治理体系和治理能力现代化的重要战略举措。作为高等教育质量的显著标志,高校智库已成为新型智库建设的核心力量之一。新型高校智库的核心在于创新理念、组织形式与运营模式,因此借鉴国外高校智库建设的成功经验具有重要的现实意义。[方法/过程]本文以英国曼彻斯特大学创新研究所为例,首先梳理了机构概况和发展历程,然后从管理体制、组织运行机制和决策影响途径3个方面对研究对象进行了系统剖析。[结果/结论]研究归纳出英国曼彻斯特大学创新研究所获得成功的6点经验,为我国高校智库建设提供参考。