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简介：喜、怒、忧、悲、恐、惊，这些都是我们常有的感觉，当然，这些感觉的产生都有一定的原因。你会用英语表达这些感觉吗？你能清楚地表述原因吗？是不是你脑中的词汇只有happy和sad呢？下面就来看看如何用我们学过的词汇，贴切地表达这些丰富的情感。

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简介：本文旨在剖析影响土地荒漠化发生发展的更深层次的内在的社会经济因素，以及中国治理荒漠化的速度及规模．作者从１１个方面分析了这一问题，其中人口问题、传统习惯、实际问题和认识问题是引起土地荒漠化的根本原因；利益驱动行为、政策、宣传失误、法律、法规不健全和组织领导等主观原因，虽然是很重要的，但如严肃对待较易解决．经济水平、科学技术及资金投入虽然也重要，但在目前防治荒漠化过程中并不是根本的限制因子，在短时期内难以彻底解决，而必须在实践中逐步加以解决．

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简介：教练是网球圈中的弱势群体与足球、篮球这样的职业团体运动不同.职业网球是完全个人化的运动.网球选手直接负责聘请或炒掉教练.也负担教练的费用。所以.假如你是职业网球圈中的一名教练,那么在面对选手时.你的言行都得小心了.因为选手就是你的财神

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简介：Nervefibersareattractedbysuturelessend-to-sidenervecoaptationintotherecipientnerve.Openingawindowintheepineuriumenhancesaxonattractionandmyelination.Theauthorsanalyzethefeaturesofnerverepairbyend-to-sidecoaptation.Theyhighlighttheknownmechanismsofaxonsproutinganddifferenthypothesesofstartupsignals(presenceorabsenceofanepineurialwindow,roleofSchwanncells,signalingfromthedistaltrunk).Theclinicalliteratureisalsopresentedanddifferencesbetweenexperimentalandclinicalapplicationsarepointedout.Theauthorsproposetheirpointofviewandperspectivesderivingfromrecentexperimentalandclinicalexperiences.

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简介：AbstractPurpose:The median time from the event leading to the spinal cord injury (SCI) to the time of decompressive surgery is estimated to be 6.9 days in Iran, which is much longer than the proposed ideal time (less than 24 h) in published guidelines. The current qualitative study aimed to determine the reasons for the observed decompression surgery delay in Iran from the perspective of neurosurgeons.Methods:This qualitative study is designed to perform content analysis on the gathered data from face-to-face semi-structured interviews with 12 Iranian neurosurgeons.Results:The findings of the current study suggest that patient-related factors constitute more than half of the codes extracted from the interviews. Overall, the type of injury, presence of polytrauma, and surgeons' wrong attitude are the main factors causing delayed spinal cord decompression in Iranian patients from the perspective of neurosurgeons. Other notable factors include delay in transferring patients to the trauma center, delay in availability of necessary equipment, and scarce medical personnel.Conclusion:In the perspective of neurosurgeons, the type of injury, presence of polytrauma, and surgeons' wrong attitude are the leading reasons for delayed decompressive surgery of individuals with SCI in Iran.