气相色谱法测试中电子原始记录的管理探讨

为实现检验原始记录真正复现,以Agilent 6890气相色谱仪的测量数据文件为基础,分析了纸质原始记录在管理中存在的问题,提出了一套规范的电子原始记录的管理方法。结合Excel数据处理软件,在原始记录的管理上,实现了测量原始数据从仪器到检验报告的无纸流转,为检验原始记录的真实再现和无纸化办公提供有益的探索。     

固相萃取-气相色谱质谱法测定水中七氯

实验采用固相萃取-气相色谱质谱法对水样的七氯进行分析,优化前处理条件及气相色谱质谱条件,方法最低检测质量浓度可达0.00005mg/L,标准曲线的线性相关系数r2=0.998线性范围为0.0002～0.01mg/L,样品平均加标回收率在101.7%～112.4%之间,相对标准偏差在1.81%～5.15%。该方法操作简单、灵敏度高、准确、重现性好。     

Ag-SiO_x金属陶瓷薄膜光学常数的尺度效应

对Ag金属颗粒镶嵌在SiOx陶瓷基体中形成的金属陶瓷薄膜光学常数的尺度效应进行了研究。用修正的M-G（Maxwell-Gannett）理论对Ag-SiOx金属陶瓷薄膜,在金属微粒体积百分比不同情况下光学常数的尺度效应进行了理论计算,并将理论计算结果与Evans的实验数据进行了比较。结果表明：金属微粒在低体积百分比（f1 25%）情况下,所用修正M-G理论计算金属陶瓷薄膜所得的光学常数更符合Evans的实验数据。从而得到金属陶瓷薄膜光学常数微尺度效应的最佳修正因子,为实际研制开发新型薄膜材料提供科学的分析方法。     

测定甘蔗中痕量甲拌磷和特丁硫磷——基质固相分散-气相色谱法

建立了基质固相分散（MSPD）-氢火焰离子化检测器气相色谱法（FID/GC）测定甘蔗中痕量甲拌磷、特丁硫磷农药残留量的方法。用弗罗里硅土作固相吸附剂,石墨化碳黑净化,丙酮作为洗脱液,GC进行分析检测。结果表明：在0.80-3.2μg/mL和0.96-3.2μg/mL范围内,甲拌磷和特丁硫磷浓度与峰面积呈良好的线性关系;样品加标平均回收率为81.8%-86.0%,相对标准偏差（RSD）为4.3%-7.5%。     

国外公共图书馆弱势群体服务研究述评

与社会、经济和政治环境变化相适应,图书馆弱势群体服务的研究经历了数次话语体系更迭:19 世纪末20世纪前期公共图书馆为劳工阶级服务阶段,20世纪60至80年代以弱势群体服务为核心的社区图书馆运动和图书馆社会责任大讨论阶段,20世纪90年代信息贫穷或数字鸿沟与管理主义话语体系下的图书馆服务阶段,20世纪90年代末至今反社会排斥和社会包容话语体系下图书馆弱势群体服务阶段.研究话语体系的变化反映了图书馆实践领域关注焦点的变更,但话语体系的更迭并没有改变其反映问题的本质.倡导和实践图书馆服务的平等获取和包容性,争取为社会底层人群或弱势群体提供服务,在欧美公共图书馆发展的各个时期是一以贯之的.     

‘Giving voice’ in research processes: an inclusive methodology for researching into social exclusion in Spain

This article seeks to illustrate how a research study that claims to be inclusive should incorporate into its development, decisions of methodological flexibility that enable voice to be given to all participants regardless of their personal conditions. The changes carried out in the techniques, procedures or in the kind of questions used in the research, illustrate how young persons can be involved in the building of scientific and academic knowledge that is being generated about them. This work forms part of a more extensive line of inquiry that started a number of years ago by two Spanish universities (Cantabria and Seville).     

Educational inclusion/exclusion of Turkish immigrant youth in Vancouver,Canada: a critical analysis

This empirical research analyses an understudied population, Turkish immigrant youths' educational experiences of inclusion/exclusion in Vancouver. My information was gathered from in-depth interviews and participant observation with the first- and second-generation, Muslim and non-religious female and male Turkish immigrant youth from working and middle-class families. The findings of this study indicate that teachers' racism, linguicism and general Islamophobia are the factors of discrimination against Turkish immigrant youth in the education market. The findings suggest that cultural background, immigration status, class and religious affiliation are significant elements in students' relations to the school culture and their educational experiences of inclusion/exclusion in Canadian schools.     

Reducing exclusions whilst developing effective intervention and inclusion for pupils with behaviour difficulties

abstract

This article draws upon a recent evaluation study of developments in behaviour/discipline systems in an inner-city secondary school over a period of 5 years (including a 3 year O°action research' cycle). The methodology involved the collection and analysis of data from a combination of qualitative and quantitative approaches with reference to other school performance indicators. Elements of the study are discussed in order to help bridge the theory/practice divide and to share practical research findings with other schools.     

Improving school attendance: can participation in outdoor learning influence attendance for young people with social,emotional and behavioural difficulties?

The link between good attendance in school and academic performance has been acknowledged for some time now. However, improving school attendance for young people with social, emotional and behavioural difficulties (SEBD) or pupils at risk of exclusion can be a challenging task for educational leaders. This paper begins with a discussion of earlier studies on outdoor learning and school attendance. It adds to the discourse by presenting findings from a one-year outdoor learning programme situated within an English special school for young people with SEBD. The research reported here is part of a larger study that used an action research design. The paper concludes that although improvements in attendance can be achieved, the factors affecting attendance are complex and that improvements may be restricted to programmes that utilise an outdoor learning approach rather than being achievable across the whole school curriculum.     

细节对高效液相色谱法检测结果准确性的探讨

应用高效液相色谱仪进行检测时必须考虑样品处理过程中的细节问题.本文以注射用青霉素钾为试验样品,依据2010年版《中华人民共和国兽药典》一部标准,用两台高效液相色谱仪进行比对试验,发现两台仪器的检测结果相对偏差较大（为1.8％）,通过分析排查最终发现是样品处理中的细节问题影响了结果,改进后两台高效液相色谱仪检测到的含量相对偏差在可控范围内（0.13％）,结果有明显改善.