Ethanol-glycerin fixation with thymol conservation: a potential alternative to formaldehyde and phenol embalming     

Hammer N  Löffler S  Feja C  Sandrock M  Schmidt W  Bechmann I  Steinke H 《Anatomical sciences education》2012,5(4):225-233

Anatomical fixation and conservation are required to prevent specimens from undergoing autolysis and decomposition. While fixation is the primary arrest of the structures responsible for autolysis and decomposition, conservation preserves the state of fixation. Although commonly used, formaldehyde has been classified as carcinogenic to humans. For this reason, an adequate substitute was developed. Ethanol-glycerin fixation and thymol conservation are described and compared with formaldehyde and phenol in this technical report. The setup, tissue qualities, financial aspects, and health concerns of this method are discussed. Ethanol-glycerin fixation and thymol conservation provide outstanding haptic and optic tissue qualities. Typical formaldehyde and phenol effects, such as skin, airway, and eye irritation, as well as carcinogenic effects, can be circumvented by using ethanol-glycerin and thymol instead. Ethanol-glycerin fixation is more expensive than formaldehyde and requires an explosion-proof facility. However, the absence of health effects and its convincing tissue qualities balance these higher costs. Therefore, ethanol-glycerin fixation and thymol conservation provide a potential alternative and complement established fixation techniques. The use of carcinogenic formaldehyde and toxic phenol can be effectively restricted through the use of the described method.  相似文献   

乒乓球运动员发球落点判断过程中视觉搜索的眼动特征   总被引：5，自引：0，他引：5  

李安民  李晓娜 《上海体育学院学报》2011,35(2)

采用眼动记录技术,对乒乓球运动员与普通大学生的眼动规律进行实验研究,分析乒乓球运动员在运动情景中视觉搜索的特征.结果显示:乒乓球运动员在处理运动情景信息过程中,在反应时和准确性方面具有明显优势;乒乓球运动员在运动情景中的视觉搜索存在时间、空间上的优势.  相似文献   

股骨近端空心钉锁定板微创治疗青壮年股骨近端骨折     

戴建辉  吴育俊  林海滨  吴献伟  张怀志 《莆田学院学报》2013,(5):40-43

研究股骨近端空心钉锁定板内固定微创治疗青壮年股骨近端骨折的临床疗效及优点。采用透视下闭合复位应用股骨近端空心钉锁定板内固定治疗41例青壮年股骨颈基底部GardenⅠ～Ⅲ型骨折或股骨转子间EvansⅠ～Ⅱ型骨折。观察术后骨折愈合情况、髋关节功能恢复情况及股骨头坏死情况。结果显示,41例患者骨折愈合率为100%,无髋内翻及内固定失败;髋关节功能优良率90%(Harris评分标准);股骨头坏死率7.3%。结果表明,该方法具有创伤小、操作简单、固定可靠和并发症少等优点。  相似文献   

Visual processing of pictures and letters in alphabet books and the implications for letter learning     

《Contemporary educational psychology》2014,39(2):156-163

Alphabet books as studied in this research typically highlight one letter per page combined with a depiction of a word that begins with the letter (e.g., a bear illustrates B). This study tests whether children’s letter knowledge improves as a result of alphabet book sharing and how the visual processing of pictures and letters affects learning from repeated alphabet book readings. The study is designed as a randomized control trial in which participants were assigned to one of two experimental groups (N = 30) or a control group (N = 15). Half of the experimental group received version A in which the letters A–L were illustrated with anthropomorphic figures and the letters M–Z with objects. Half received version B in which the letters A–L were illustrated with objects and the letters M–Z with anthropomorphic figures. Mean age of the children was 57.6 months (SD = 3.6). While sharing the alphabet book we registered children’s eye movements in the first and fourth (last) reading session. Alphabet book reading stimulated letter knowledge although the make-up of the alphabet book moderated the effects. Relatively more visual attention to pictures of anthropomorphic figures interfered with learning letters from alphabet book sharing. Visual attention to letters also predicted letter knowledge and learning. Only a small part of each letter attracted children’s attention and the briefer their fixations on this distinctive area, the more letters they knew at the pretest and were able to learn from alphabet book sharing.  相似文献   

微量元素镓的体内代谢与临床应用     

梅紫青  王忠诚  李广元  傅力浦  王放虎 《杨凌职业技术学院学报》2002,(1)

镓(Gallium,Ga)是否为人体的必需微量元素,目前尚无定论。但是业已证实,镓具有丰富的临床功效。经过对含镓化合物的体内代谢与毒性、抗癌作用及对骨质疏松类骨病的疗效分析,指出镓制剂口服毒性低于注射途径,是继顺铂之后第二种治疗癌症的有效元素。镓的抗癌机理可能是镓进入癌细胞后抑制后者对铁的吸收利用,或者进而抑制核苷酸还原酶的活性,阻碍DNA复制。镓改善骨强度的原因是抑制骨的再吸收和提高骨钙含量。  相似文献   

影响问题解决的因素探析   总被引：4，自引：0，他引：4  

乐国林  田建芬 《赣南师范学院学报》2001,(2):61-64

本文从人们解决问题的一般过程入手 ,分析在问题解决的各阶段所存在的影响问题解决的因素。文章认为 ,在问题解决的识别和理解阶段 ,问题解决者对问题表征的适当性、解决者的认知结构将直接影响问题的解决 ;在问题解答阶段 ,解决策略、解决定势、功能固着 (定势 )影响着问题解决。而在问题解决的各阶段 ,问题解决者的动机、成败体验、焦虑情绪等主观因素和问题的表述、解决所处的环境等客观因索将制约着问题的解决。  相似文献   

坚强内固定与颌间固定治疗下颌骨骨折87例临床分析     

杨阳  高振然  邹春平 《泰州职业技术学院学报》2005,5(3):43-44

目的：探讨钛板坚强内固定与颌间固定治疗下颌骨骨折的临床效果。方法：87例下颌骨骨折患随机分为二组。一组采用上下颌牙弓夹板固定加颌间弹性牵引术(39例)．另一组采用钛板内固定加颌间弹性牵引术(48例)。治疗后对临床效果进行分析评价。结果：两组术后在感染发生率、骨愈合方面疗效基本相同。在咬合关系、张口度的恢复方面存在明显差异。结论：钛板坚强内固定治疗下颌骨骨折疗效满意，在咬合关系及张口度恢复方面优于颌间固定术。  相似文献   

镍钛聚髌器治疗髌骨粉碎性骨折疗效分析     

罗羿轩 《岳阳职业技术学院学报》2011,26(4):76-78

目的研究镍钛聚髌器治疗髌骨粉碎性骨折的疗效。方法采用镍钛聚髌器术治疗髌骨粉碎性骨折38例,采用克氏针+钢丝环扎术治疗52例。结果随访7-18个月,平均12个月,90例均获骨性愈合,膝关节功能正常。功能疗效评估采用胥少汀等的膝关节功能综合评价标准,镍钛聚髌器组优34例,良3例,中1例;克氏针+钢丝环扎组优35例,良13例,中4例。结论利用镍钛聚髌器内固定治疗髌骨粉碎性骨折有着操作简单、复位满意、固定稳定,可早期功能锻炼等特点,其优良率显著高于克氏针+钢丝环扎法。  相似文献   

两种文化视野,两种审美倾向——贾平凹、陈忠实比较谈     

李兆虹 《商洛学院学报》2007,21(1):1-7

陕西作家贾平凹、陈忠实都来自于农村，关注农村，体现出恋土情怀，但在两种不同的文化视角下，体现出不同的文学风格和审美倾向。贾平凹的作品空灵、典雅，凸显阴柔之美，陈忠实的创作则恢宏、大气磅礴，体现出阳刚之气；陈忠实的作品具有悲剧因素，人物充满苦难与悲凉，贾平凹的作品体现和谐与宁静，迷茫与困惑；陈忠实具有明确的史诗意识，构建具有鲜明史诗品格的作品，而贾平凹则更关注原生民间文化形态；陈忠实受儒家文化影响大，其作品具有反思思辨色彩，深邃而浑厚，而贾平凹受佛道思想影响较大，注重直觉与感性。  相似文献   

体育赛事节目网络实时转播的著作权法困境及对策          下载免费PDF全文

桂沁 《体育科研》2019,(4):75-81

针对未经许可利用网络实时转播体育赛事节目的行为，当前司法裁判仍然存在诸多问题。通过分析发现：在现行著作权法框架下，赛事直播画面的法律属性备受争议，即使直播画面构成作品或录像制品，由于法律本身的制度漏洞，赛事节目制作人和授权播放机构的视听传播利益仍不能得到切实有效的保护。认为：一方面应抓住《中华人民共和国著作权法》第3次修订这一契机，进一步整合著作权和录像制作者权的权能构造，扩张广播组织权使之能延伸至互联网领域，从而给予体育赛事节目更全面的保护；另一方面，可在《中华人民共和国体育法》中为赛事组织者创设“赛事利用权”这一可自由流转的财产权利，从而保障作为权利受让人的制播机构能够基于这一法定权利维护自身合法利益。  相似文献