参麦注射液对大鼠急性心肌梗死后心功能的影响   总被引：2，自引：0，他引：2  

陈立锋  马建伟  张晓云  赵兰平  陈彦静  范凌 《河北北方学院学报(医学版)》2008,25(1):17-19

目的:探讨参麦注射液对大鼠急性心肌梗死后心功能的影响。方法:结扎大鼠左冠状动脉前降支(LAD)建立AMI模型,分组:①MI 1周组;②SM 1周组;③MI 2周组;④SM 2周组(MI心梗模型组,SM参麦注射液治疗组)。另设1周、2周假手术(Sham)组。记录心率(HR)及心功能参数:平均动脉压(MAP),左室收缩压(LVSP)、左室舒张末压(LVEDP)、左室内压最大上升速率( dp/dtmax)和下降速率(-dp/dtmax)。结果:在心梗后1周、2周时,模型组LVSP、±dp/dtmax均明显降低,而LVEDP则明显增加(P<0.01);参麦注射液治疗组LVSP、±dp/dtmax显著回升、LVEDP下降,与对应时间点MI组比较均具有显著性差异(P<0.05,0.01)。结论:参麦注射液能显著改善大鼠急性心肌梗死后的心功能。  相似文献   

自主学习应注意的几种方法     

徐书奇 《河南广播电视大学学报》2002,15(4):11-12

现代远程教育主要以学生的自主学习为主,以教师的辅导为辅,在这种情况下,学生掌握一定的学习方法就显得很重要.因此,教师在辅导时除解惑之外,更重要的是教给学生一些学习方法.根据多年的教学实践,我总结了以下一些学习方法,即宏观学习法、比较学习法、归纳学习法、特征学习法、疑问学习法、拟考学习法和评卷学习法等,对学生的自主学习很有帮助.  相似文献   

第17号染色体短臂杂合性缺失与肿瘤的研究进展     

傅晓艳  谭海栋  李旭升  郑闪 《金华职业技术学院学报》2002,2(4):61-64,25

抑癌基因是人类正常细胞中所具有的一类基因，对细胞的增殖分化有调节作用。染色体体臂上某一区域非随机杂合性缺失导致抑癌基因的丧失，从而促使肿瘤发生。本文总结了第17号染色体短臂(17p)杂合性缺失与肿瘤发生关系的研究进展，该研究不仅为我们定位新的抑癌基因提供了基础，为肿瘤的预防、早期发现和诊断提供了依据，同时也使我们能更好理解肿瘤的分子进展。  相似文献   

网络信息资源管理模式——元数据   总被引：10，自引：0，他引：10  

袁红梅 《渭南师范学院学报》2004,19(5):62-64

在数字图书馆建设中，元数据是网络信息资源组织的一种新工具．文章提出了元数据的3种格式，4种类型，讨论了元数据在网络信息资源组织中的应用．  相似文献   

A novel voltage output integrated circuit temperature sensor   总被引：1，自引：0，他引：1  

吴晓波  赵梦恋  严晓浪  方志刚 《浙江大学学报(A卷英文版)》2002,3(5):553-558

The novel integrated circuit (IC) temperature sensor presented in this paper works similarly as a two-terminal Zener, has breakdown voltage directly proportional to Kelvin temperature at 10 mV/℃, with typical error of less than ±1.0℃ over a temperature range from -50℃ to +125℃. In addition to all the features that conventional IC temperature sensors have, the new device also has very low static power dissipation ( 0.5 mW ) , low output impedance ( less than 1Ω), excellent stability, high reproducibility, and high precision. The sensor's circuit design and layout are discussed in detail. Applications of the sensor include almost any type of temperature sensing over the range of -50℃-+125℃. The low impedance and linear output of the device make interfacing the readout or control circuitry especially easy. Due to the excellent performance and low cost of this sensor, more applications of the sensor over wide temperature range are expected.  相似文献   

Zoo educators face common and specific demands and resources: an application of the JD-R model     

Daniela Sellmann  Valerie Beckmann  Sarah Panzlaff  Susanne Menzel 《Environmental Education Research》2019,25(1):92-114

Zoo educators are important communicators of the targets in education for sustainable development and therefore carry great responsibility for global environmental change. However, German zoo educators form a heterogeneous group, many of them working in non-permanent job positions and facing multiple challenges at work. Applying the job demands-resources model, our study aims at revealing factors influencing zoo educators’ job strain. Our data from eight in-depth interviews with German zoo educators confirm that they perceive common factors known from other studies, such as demands (e.g. workload) and resources (e.g. supervisory support). Besides this, job-specific factors were identified (e.g. working with humans and animals). The demands zoo educators mentioned could be classified either as job hindrances (e.g. lack of equipment) or job challenges (e.g. learning). Future studies should quantify these results to facilitate the development of appropriate measures to reduce educators’ job strain, thus enhancing their performance.  相似文献   

ISM-CMAP-Combine (ICMC) for hierarchical knowledge scenario in quality engineering education     

R. K. Upadhyay  S. K. Gaur  V. P. Agrawal  K. C. Arora 《European Journal of Engineering Education》2007,32(1):21-33

Quality assurance in engineering education is a multifaceted problem further augmented by the stakeholders of engineering education. Students, parents and employers are rightfully questioning the quality of the curriculum, the instructional delivery, the learning environment, accessibility to learning technologies and equipment, employability as well as the possibilities of lifelong learning and the improvement of knowledge (Karapetrovic 2002 Karapetrovic, S. 2002. Why and how to develop a meaningful quality assurance system in engineering schools. Int. J. Engg. Educ, 18(3): 285–294. [Web of Science ®] [Google Scholar]). The purpose of the study is, therefore, to identify the parameters that influence the quality of an engineering education system and develop an integrated model of hierarchical structuring and a concept map for pre-identified concept elements through a process of iterative-interactive consensus-driven methodology, as advocated by second-generation system design paradigm for evolving knowledge scenario of concepts related to quality engineering education.  相似文献   

女大学生人格状况比较研究     

刘淳松 《中国特殊教育》2007,(10):82-85

目的:比较分析高等院校女生人格状况,为高校女生人格教育提供实证依据。方法:运用大学人格问卷(UPI)在湖南省的某理工院校对504名2005级女生进行人格测查,并抽取男生样本858名作为性别比较因素。结果:(1)有第一类人格问题的女大学生比例显著高于男大学生;女大学生UPI分数显著高于男大学生。(2)女大学生人格问题症状选择率排前列的项目依次为:在乎别人的视线,缺乏自信心,过于担心将来的事情,父母期望过高,情绪起伏过大。(3)非独生女与独生女的UPI分数不存在显著差异;农村生源女生UPI分数显著高于城镇生源女生;文科类女生UPI分数显著高于理工类女生。结论:女大学生人格问题比男生严重,农村生源女生人格问题比城镇生源女生严重,文科类女生人格问题比理工科女生严重;应高度重视女大学生尤其是农村生源女生和理工院校中文科类女生的人格健康教育,以优化她们的心理素质。  相似文献   

Isolation and identification of Sclerotinia stem rot causal pathogen in Arabidopsis thaliana     

Wang AR  Lin WW  Chen XT  Lu GD  Zhou J  Wang ZH 《Journal of Zhejiang University. Science. B》2008,9(10):818-822

A new stem rot disease is found to occur naturally on Arabidopsis plants in greenhouses of Fuzhou, China. In order to identify its pathogen, we conducted a series of fimgal isolation and purification, plant reinoculation, and ascus and ascospore induction from the sclerotia. The isolate caused typical water-soaked lesions after reinoeulation and produced sclerotia both on Arabidopsis plants and culture medium plates, and the sclerotia could be induced to produce discal apothecia and 8 binucleate ascospores per ascus. These disease symptom and fungal morphology data revealed that the fungus Sclerotinia sclerotiorum (Lib.) de Bary was the pathogen for Arabidopsis stem rot. To confirm this, we further amplified its large subunit ribosomal DNA (LSU rDNA) by polymerase chain reaction (PCR), and compared the sequence with the known LSU rDNA sequences in GenBank. The results show that the sequence shares the highest identities with the LSU rDNAs of different S. sclerotiorum strains. Taking all these data together, we concluded that the fungus that caused the Arabidopsis stem rot is S. sclerotiorum (Lib.) de Bary. This is the first report that Arabidopsis is naturally infected by S. sclerotiorum.  相似文献   

Critical Religious Education (CRE) in practice: evaluating the reception of an introductory scheme of work     

Angela Goodman 《British Journal of Religious Education》2018,40(2):232-241

Critical Religious Education (CRE) is a contemporary pedagogy of religious education developed by Andrew Wright and various colleagues over the past two decades. There has been widespread academic discourse about the pedagogy in theory but increasingly commentators have called for examples of it in practice. Over the past seven years a writing group associated with The Forum of Religious and Spiritual Education at King’s College London have been developing practical materials aimed at supporting teachers in embedding the pedagogy in practice. Of particular relevance to this paper is the development of an introductory scheme of work, aimed at year 7 students, which has been trialled in a number of schools in and around London. In 2013, focus group interviews took place in four of these schools in order to ascertain the reception that the materials had received. The data suggests a very positive response to the introductory scheme of work and the CRE approach in general, partially dispelling some criticisms levelled at it in academic discourse. The author has thus suggested that the approach and the work of the writing group need further exposure, especially in schools, at conferences and on initial teacher education programmes.  相似文献