期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
放射性气溶胶连续监测仪专用滤纸性能测试 被引量:2
1
作者 傅翠明 张志龙 +2 位作者 李静 李建龙 谭玲龙 《原子能科学技术》 EI CAS CSCD 北大核心 2010年第2期243-247,共5页
对特制的放射性气溶胶连续监测仪专用滤纸(TSF22045)的基本参数进行了测试和实验研究。结果表明,该滤纸不仅对气溶胶粒子具有良好的表面收集性能,且有较强的抗拉强度,有利于提高监测仪的监测灵敏度,适于做成滤纸带,以用于需有自动走纸... 对特制的放射性气溶胶连续监测仪专用滤纸(TSF22045)的基本参数进行了测试和实验研究。结果表明,该滤纸不仅对气溶胶粒子具有良好的表面收集性能,且有较强的抗拉强度,有利于提高监测仪的监测灵敏度,适于做成滤纸带,以用于需有自动走纸系统的各类放射性气溶胶连续监测仪中。 展开更多
关键词 专用滤纸 抗拉强度 自吸收 监测灵敏度
下载PDF
Quantitative and qualitative comparison of neonatal screening plan for the identification of hypothyroid neonates between Nahavand and Kashmar cities in 2016–2017 (respectively in the west and east of Iran)
2
作者 Maryam Soori Sedigheh Soleymani +1 位作者 Samira Tabaei Manoochehr Solgi 《TMR Integrative Medicine》 2020年第2期1-7,共7页
Background: Congenital hypothyroidism is the result of a reduction in thyroid hormone production or a decrease in the activity of thyroid hormone receptors and is one of the most preventable causes of mental retardati... Background: Congenital hypothyroidism is the result of a reduction in thyroid hormone production or a decrease in the activity of thyroid hormone receptors and is one of the most preventable causes of mental retardation, deafness, and heart problems in the world. This study aimed to compare the prevalence of congenital hypothyroidism between Nahavand in the west of Iran and Kashmar in the east of Iran during the years 2016 2017. Methods: This is a cross-sectional descriptive study on neonates born in April 2016 to March 2018 in two cities of Nahavand and Kashmar. A few drops of blood from a baby's heel in 3 5 birthdays on a special filter paper (S & S903) became blood samples from the pelvic floor were filtered and dried. The valuation of the samples was performed by the enzyme linked immunosorbent assay method by evaluating the thyroid stimulating hormone. Premature infants, underweight (less than 2,500 grams), a weight of over 4 kg, multiple births, or newborns requiring blood transfusions or any newborn needed to be retaken to the test after two weeks. Results: In the city of Nahavand, the incidence of neonatal hypothyroidism in the years 2016 and 2017 were 6.7 and 9.09 per 1,000 live births. And for the city of Kashmar, this number increased to 5.6 and 4.3 per 1,000 births in 2016 and 2017, respectively. The mean rate of participation in the screening program in the first 3 5 days of birth in Nahavand during two years was 2016 and 2017 to 78.7% and in Kashmar about 94%, which indicates the higher participation of Kashmar. In the city of Nahavand, 64.6% of cases of hypothyroidism reported in boys' neonates and 51.5% of male children in the Kashmar city. Conclusion: The results of our survey indicates that the prevalence of hypothyroidism is high in both Kashmar in eastern Iran and Nahavand in western Iran. Especially in Nahavand city of western Iran, where the prevalence of hypothyroidism is higher than global and internal statistics. Further surveys are required to elucidate the role of iodine deficiency and family marriage in the hereafter. 展开更多
关键词 Neonatal hypothyroidism Screening special filter paper Mental retardation Prevalence Iran
下载PDF
增香保润特种滤棒研究与应用进展 被引量:4
3
作者 孟祥士 崔春 +7 位作者 纪朋 胡少东 楚文娟 杨帆 李禄成 顾亮 李明哲 高明奇 《轻工学报》 CAS 2020年第3期72-81,共10页
对基于外加材料(香线、爆珠、凝胶和颗粒)和原材料(三醋酸甘油酯、成型纸和二醋酸纤维丝束)分别进行添加制得的增香保润滤棒,以及其他增香保润滤棒的研究与应用现状进行综述,指出,基于外加材料添加的增香保润滤棒助剂负载量较多且可控... 对基于外加材料(香线、爆珠、凝胶和颗粒)和原材料(三醋酸甘油酯、成型纸和二醋酸纤维丝束)分别进行添加制得的增香保润滤棒,以及其他增香保润滤棒的研究与应用现状进行综述,指出,基于外加材料添加的增香保润滤棒助剂负载量较多且可控性较好,但对其增香保润的原理,以及对卷烟品质的整体影响仍缺乏系统性的研究;基于原材料添加的增香保润滤棒制备工艺较为简单,成本较低,但存在增香保润助剂负载量小且易挥发的缺点,更适合作为一种辅助的增香保润手段;其他增香保润滤棒通过优化滤棒结构、在其他载体上添加增香保润助剂,赋予了滤棒更多的功能性和更好的可控性,但是存在结构复杂、生产成本高和质量控制难的缺点.鉴于上述增香保润滤棒存在生产工艺不完善、产品品质控制不够稳定、生产成本偏高等问题,未来的研究可对现有技术手段进行整合,采用多元滤棒结构等方式来提升滤棒的增香保润性能;同时可对滤棒的生产工艺进行调整、优化,降低生产成本,提高滤棒质量的稳定性. 展开更多
关键词 增香保润 特种滤棒 香线 爆珠 三醋酸甘油酯 成型纸
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部