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15种理气中药体外对人血小板聚集的影响 被引量:52
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作者 吉中强 宋鲁卿 牛其昌 《中草药》 CAS CSCD 北大核心 2001年第5期428-430,共3页
目的 观察 15种理气中药对体外肾上腺素诱导的人血小板聚集的影响。方法 试管内人血小板加中药孵育前后 ,比浊法测定血小板聚集。结果  11种理气药具有抗血小板聚集作用 (P<0 .0 5~ 0 .0 0 1) ,其中枳实的抑制作用较阳性对照阿... 目的 观察 15种理气中药对体外肾上腺素诱导的人血小板聚集的影响。方法 试管内人血小板加中药孵育前后 ,比浊法测定血小板聚集。结果  11种理气药具有抗血小板聚集作用 (P<0 .0 5~ 0 .0 0 1) ,其中枳实的抑制作用较阳性对照阿司匹林明显 (P<0 .0 1) ,青皮、陈皮与阿司匹林无差异 (P<0 .0 5 )。柿蒂、甘松、檀香、沉香对血小板聚集无明显作用 (P>0 .0 5 )。结论 多数理气药 (11/15 )在体外具有抗人血小板聚集作用 ,枳实、青皮、陈皮 3种作用强于或与阿司匹林相当。 展开更多
关键词 理气中药 血小板聚集 肾上腺素 实验
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Study of hearing screening for rural school children
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作者 Xiaolu Li Xingkuan Bu Carlie Driscoll 《Journal of Nanjing Medical University》 2006年第4期242-247,共6页
Objective: To develop an appropriate mass screening system to evaluate hearing loss for primary school children, especially in rural areas. Methods: In Jiangsu Province, at a rural primary school-Longdu Primary Scho... Objective: To develop an appropriate mass screening system to evaluate hearing loss for primary school children, especially in rural areas. Methods: In Jiangsu Province, at a rural primary school-Longdu Primary School, 317 of 479 rural students (from Grade 1 to Grade 6, over 50 students for each grade) were screened by, using the Chinese Hearing Questionnaire for School Children(CHQS). Two weeks later, they accepted transiently evoked otoacoustic emissions (TEOAEs) test. At the same time, all participants were given a 'gold standard' audiological assessment that comprised of otoscopy, pure tone, and tympanometry. After eight weeks, 103 out of the 317 students accepted the second TEOAEs and 'gold standard' test to confirm the results. Results: There was no statistical difference in the results of two 'gold standard' test (χ^2 = 0.14, 0.5 〈 P 〈 0.75). Compared with the 'gold standard' results, the hit rate, sensitivity, specificity of the CHQS was 57%±2.78%, 61% ± 10.18%, 57% ± 2.89% respectively(α= 0.43, β = 0.39). Youden Index J, LR+, LR-, PV+ and PV- was 0.18 ± 0.11, 1.42, 0.68, 0.10, 0.95 (Az 〈 0.54, EF = 0.75-0.95). While a higher system accuracy was obtained by TEOAEs [HR = 97 ± 0.71%, Sen = 69± 7.8%, Spe = 98 ± 0.52%(α= 0.02,β= 0.31), Youden Index J = 0.67±0.08, LR+ = 34.5, LR- = 0.32, PV+ = 0.71, PV- = 0.99 (Az = 0.85, EF = 0.97)]. Conclusion: TEOAEs got a high efficiency and specificity values with reasonable sensitivity. However, CHQS needs substantial modifications to improve its sensitivity in evaluating heating loss. 展开更多
关键词 chqS TEOAEs hearing screening
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正交试验法优化ML20MnTiB精线表面磷化质量的工艺研究 被引量:1
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作者 侯凯元 赵广兴 +3 位作者 都影祁 张磊 郭利强 景双辉 《材料保护》 CAS CSCD 2021年第6期131-135,共5页
为了提升ML20MnTiB精线表面磷化膜的质量,满足客户大变形多工位高速冷成型需求,采用正交试验方法研究了不同酸洗拉拔工艺对ML20MnTiB合金钢丝磷化膜的膜重、SEM形貌和成分的影响。结果表明:第3次抽丝不酸洗,采用凯密特尔工艺磷化,控制... 为了提升ML20MnTiB精线表面磷化膜的质量,满足客户大变形多工位高速冷成型需求,采用正交试验方法研究了不同酸洗拉拔工艺对ML20MnTiB合金钢丝磷化膜的膜重、SEM形貌和成分的影响。结果表明:第3次抽丝不酸洗,采用凯密特尔工艺磷化,控制精抽变形量为10%时,获得的表面磷化膜最重、磷化有益成分最高、微观形貌最为理想,更符合冷加工成型工艺要求。 展开更多
关键词 正交试验 ML20MnTiB 精线 磷化膜
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