Benefits of combination of electroencephalography, short latency somatosensory evoked potentials, and transcranial Doppler techniques for confirming brain death   总被引：1，自引：0，他引：1  

Wang K  Yuan Y  Xu ZQ  Wu XL  Luo BY 《Journal of Zhejiang University. Science. B》2008,9(11):916-920

Objective: Optimization of combining electroencephalography (EEG), short latency somatosensory evoked potentials (SLSEP) and transcranial Doppler (TCD) techniques to diagnose brain death. Methods: One hundred and eleven patients (69 males, 42 females) from the major hospitals of Zhejiang Province were examined with portable EEG, SLSEP and TCD devices. Re-examinations occurred ≤12 h later. Results: The first examination revealed that the combination of SLSEP and EEG led to more sensitive diagnoses than the c...  相似文献   

Effects of β-Aescin on the expression of nuclear factor-κB and tumor necrosis factor-α after traumatic brain injury in rats     

XIAO Guo-min  WEI Jing 《Journal of Zhejiang University. Science. B》2005,6(1)

To investigate the inhibiting effect of β-Aescin on nuclear factor-κB (NF-κB) activation and the expression of tumor necrosis factor-α (TNF-α) protein after traumatic brain injury (TBI) in the rat brain, 62 SD rats were subjected to lateral cortical impact injury caused by a free-falling object and divided randomly into four groups: (1) sham operated (Group A); (2) injured (Group B); (3) β-Aescin treatment (Group C); (4) pyrrolidine dithocarbamate (PDTC) treatment (Group D). β-Aescin was administered in Group C and PDTC treated in Group D immediately after injury. A series of brain samples were obtained directly 6h, 24 h and 3 d respectively after trauma in four groups. NF-κB activation was examined by Electrophoretic Mobility Shift Assay (EMSA); the levels of TNF-α protein were measured by radio-immunoassay (RIA); the water content of rat brain was measured and pathomorphological observation was carried out. NF-κB activation, the levels of TNF-α protein and the water content of rat brain were significantly increased (P＜0.01) following TBI in rats. Compared with Group B, NF-κB activation (P＜0.01), the levels of TNF-α protein (P＜0.01) and the water content of brain (P＜0.05) began to decrease obviously after injury in Groups C and D.β-Aescin could dramatically inhibit NF-κB activation and the expression of TNF-α protein in the rat brain, alleviate rat brain edema, and that could partially be the molecular mechanism by which β-Aescin attenuates traumatic brain edema.  相似文献   

我国中小企业人才流失原因及对策研究     

申美娟 《黑龙江科技信息》2009,(30):103-104

中小企业独具的灵活性与创新性,使其无论是在企业数量还是提供就业机会上,都对我国的国民经济做出了重要的贡献,发挥着大企业难以取代的作用,在我国的经济社会发展中占有重要地位。但是日前我国有很大一部分中小企业在人力资源管理上的滞后性,导致了企业内部人才的大量流失,从而制约了中小企业的成长与发展。试图从我国中小企业人才流失的现状、原因及影响分析入手,探寻有效控制中小企业人才流失的措施,以更好地促进中小企业的健康、快速发展。  相似文献   

Perceptions and Attitudes toward Brain Donation among the Chinese People     

Qi Zhang  Jing Deng  Ya-Nan Li  Yue Gou  Xiao-Xin Yan  Fang Li  Ai-Hua Pan 《Anatomical sciences education》2020,13(1):80-90

Postmortem human brain donation is crucial to both anatomy education and research. The China Human Brain Banking Consortium was established recently to foster brain donation in China. The purpose of this study was to gain information about the public perception of and attitudes toward brain donation and to identify factors that may impact the willingness to participate in brain donation among the Chinese people. A specifically designed questionnaire was delivered to community residents in Changsha (the capital city of Hunan province) with a total of 1,249 completed forms returned and statistically analyzed. The majority of the participants considered that brain donation would help medical research and education, and 32.0% of respondents agreed that the brain donation would help change the traditional Chinese funeral belief in keeping the body intact after death. However, participants aged over 60 years old were less supportive of this concept. Among all participants, 63.7% stated that they were not knowledgeable about brain donation, while 26.4% explicitly expressed a willingness to participate in brain donation. Age, gender, monthly household income, and knowledge about brain donation significantly affected the willingness. Compared with other age groups, a higher proportion of participants aged over 60 years old preferred to be informed by a medical college. To promote brain donation in China, especially among the elderly, better communication of its medical benefits and a reinterpretation of the Confucius view of the human body should be provided. Efforts are also needed to provide appropriate forums and sources of brain donation information to targeted communities and society in general.  相似文献   

"脑听"带动说——尝试创新     

郭丽萍 《新疆职业大学学报》2006,14(2):70-71

本文就在听、说教学实践中，通过“脑听”带动说，模拟听、说，对比听、说等教学法提高听、说质量，尝试大胆创新。  相似文献   

Comparative study on glutathione transferases of rat brain and testis under the stress of phenobarbitol and β-methylcholanthrene     

THYAGARAJU K.  HEMAVATHI B.  VASUNDHARA K.  RAO A.D.  DEVI K.N. 《Journal of Zhejiang University. Science. B》2005,6(8):759-769

A comparative study was made on the tissue specific expression of glutathione transferases (GST) in brain and testis after exposure of rat to phenobarbitol (PB) and 3-methylcholanthrene (MC). Glutathione transferases, a family of multifunctional proteins are involved in intracellular transport processes and in detoxication of electrophilic xenobiotics by catalyzing reactions such as conjugation, isomerization, reduction and thiolysis. On purification, the yield of GST proteins by affinity chromatography was 39% in testis and 32% in brain. The affinity purified testis GSTs were resolved by chromatofocusing into six anionic and four cationic isozymes, and in brain glutathione transferases were resolved into four anionic and three cationic isozymes, suggesting the presence of multiple isozymes with Yc, Yb, Y3 and Yδ in both of them. In testis and brain, these isozymes at identical pI values showed variable functions with a battery of substrates and the cationic isozymes of brain and testis showed identical properties in CHP (cumene hydroperoxide) at pH values of above 7.0. Substrate specificity studies and immunoblot analysis of testis and brain proteins revealed that they play a predominant role in the detoxication of phenobarbitol or 3-methylcholanthrene. Expression of the isozymes in testis and brain on exposure to PB and MC indicated elevated subunit variation. In both testis and brain, Yδ ofπclass was expressed on PB treatment and Yc of α class and Y3 of μ class was expressed in MC treated testis and only Yc was predominantly expressed in MC treated brain. Thus these subunits expression is considered as markers for carcinogenesis and specific to chemical toxicity under phenobarbitol and 13-methylcholanthrene stress.  相似文献   

图形组织者在英语篇章写作中的运用     

虞应琼  陈静 《宜宾学院学报》2008,8(11)

图形组织者是将信息进行视觉转换和呈现的方式,它是视觉形式的元认知工具,有助于对信息进行搜集、分析、综合及展示.在英语篇幸写作教学中,教师可以经常使用图形组织者策略帮助学生构思文章结构、组织材料、拓展思路,从而提高学生的写作水平和培养他们的创造性思维能力.  相似文献   

The classical classroom: enhancing learning for pupils with Acquired Brain Injury (ABI)     

Siân A. Rees  David Skidmore 《Journal of Research in Special Educational Needs》2008,8(2):88-95

This paper seeks to draw parallels between different approaches to classroom instruction and two contrasting musical styles and to examine how pupils with Acquired Brain Injuries (ABI) might fare in each. A polyphonic classroom is defined as one where an awareness of multiple layers of meaning are encouraged to enhance the learning opportunities, whereas in a classical classroom most of the layers expressly support a single dominant line. While this analogy cannot be stretched too far, it is suggested that, after an ABI, a pupil might progress their learning more easily in a classical-style classroom.  相似文献   

教育神经科学与文化适宜性教学     

周加仙 《远程教育杂志》2012,(5):20-25

文化适宜性教学强调教学对文化的敏感性,尊重不同背景的学习者的不同世界观与认识论、不同民族的文化传统与文化多样性。文化适宜性教学得到了教育神经科学研究的支持。教育神经科学的大量证据表明,持续性的文化经验会改变脑的结构与功能,进而影响人们加工信息、理解世界的方式。因此,理解文化对脑功能与结构影响的普遍性与特殊性,对于教育者重视文化多样性与教育公平政策的制定与教育实践推广具有重要的意义。文化适宜性教学的主要目标是培养学习者感知文化差异与沟通文化差异的能力。  相似文献   

Brain Type or Sex Differences? A structural equation model of the relation between brain type,sex, and motivation to learn science     

Albert Zeyer  Katrin Bölsterli  Dorothee Brovelli  Freia Odermatt 《International Journal of Science Education》2013,35(5):779-802

Sex is considered to be one of the most significant factors influencing attitudes towards science. However, the so-called brain type approach from cognitive science suggests that the difference in motivation to learn science does not primarily differentiate the girls from the boys, but rather the so-called systemisers from the empathizers. The present study investigates this hypothesis by using structural equation modelling on a sex-stratified sample of 500 male and female students of secondary II level. The results show, that the motivation to learn science is directly influenced by the systemizing quotient SQ, but not by sex. The impact of sex on the motivation to learn science, measured by five key concepts, only works indirectly, namely through the influence of sex on the SQ. The empathizing quotient (EQ) has no impact on the motivation to learn science. The SQ explains between 13 and 23 percent of the variation of the five key constructs. In female students, the impact of the SQ is very similar for all key concepts. In male students, it is highest for self-efficacy and lowest for assessment anxiety. The motivation to learn science is significantly larger for male students in all involved SMQ key concepts, but the difference is small. The interpretation of these findings and conclusions for science teaching and further research are discussed.  相似文献