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β-环糊精与利眠宁等药物的光度增效和包络物的研究 被引量:1
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作者 李培之 曹奕 徐悦 《云南大学学报(自然科学版)》 CAS CSCD 1999年第S2期45-46,共2页
关键词 Β-环糊精 分光光度 循环伏安法 光度增效 包络物
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一种测定血清铁的新方法──铬天青B及溴化十六烷基三甲铵增效光度法测定血清铁
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作者 邓益群 邱细敏 李志良 《广东微量元素科学》 CAS 1998年第9期62-65,共4页
建立了需血量少、准确、简便的测定血清铁和铁结合力的新方法。用铬天青B(ECAB)及溴化十六烷基三甲铵(CTMAB)作增效显色剂,使三价铁还原为二价铁并与之结合成紫色三元配合物,在pH4.6~5.5范围内,最大吸收波长630nm处测定吸收... 建立了需血量少、准确、简便的测定血清铁和铁结合力的新方法。用铬天青B(ECAB)及溴化十六烷基三甲铵(CTMAB)作增效显色剂,使三价铁还原为二价铁并与之结合成紫色三元配合物,在pH4.6~5.5范围内,最大吸收波长630nm处测定吸收度,计算血清铁和总铁结合力。回收率为94%~105%。该法用于206例健康男女及10例缺铁性贫血患者、5例再生障碍性贫血患者血清铁含量和61例健康男女总铁结合力的测定,结果令人满意。 展开更多
关键词 血清 测定 增效光度 CTMAB 铬天青B
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包络增效光度新方法研究:Mo-BPR-CTMAB-βCD多元反应
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作者 邱细敏 雷丽红 李志良 《湖南师范大学学报(医学版)》 1999年第1期1-2,共2页
本文通过对Mo-BPR-CTMAB-βCD多元显色反应及应用的讨论系统研究了包含络合增效光度新方法。
关键词 包含络合物 包络增效光度 环糊精
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The green-emitting fluorescence of nano Y_2O_3:Er^(3+) under different excitations 被引量:3
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作者 JI RuoNan YE YanXi +5 位作者 HU XiaoYun FAN Jun LIU EnZhou ZHANG Qian ZHAO ChaoShuai YE SiWen 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2012年第7期1152-1157,共6页
The green-emitting fluorescent powders of nano Y2O3:Er^3+ were fabricated by the coprecipitation method. The X-ray diffrac- tion pattern shows that as-prepared Y2O3:Er^3+ is the cubic phase crystal with a grain si... The green-emitting fluorescent powders of nano Y2O3:Er^3+ were fabricated by the coprecipitation method. The X-ray diffrac- tion pattern shows that as-prepared Y2O3:Er^3+ is the cubic phase crystal with a grain size of about 30 nm. The UV-Vis spec- trum indicates Y^O3:Er^3+ exhibits five ultraviolet visible absorption peaks at 365, 377, 489, 521 and 652 nm respectively. Meanwhile, the fluorescence spectra of Y2O3:Er^3+ display four emission peaks at 522, 537, 550 and 562 nm at the excitation of 365,377 and 521 nm, respectively. The green-emitting fluorescent mechanism of Y2O3:Er^3+ is proposed as well. Additionally, the temperature dependence of fluorescence properties and metal Ag fluorescence enhancement effect are investigated. Results show that increasing the annealing temperature and metal Ag doping both can enhance the fluorescence intensity. The maxi- mum enhancement is 87.5% after Ag is doped. 展开更多
关键词 nano Y2O3:Er^3+ coprecipitation method luminous properties localized surface plasmon resonance fluorescence enhancement
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Laser-enhanced thermal effect of moderate intensity focused ultrasound on bio-tissues
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作者 JinYu Zhao ShuYi Zhang +1 位作者 XiuJi Shui Li Fan 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2017年第9期28-36,共9页
For avoiding extra-damage to healthy tissues surrounding the focal point during high intensity focused ultrasound(HIFU) treatment in medical therapy, to reduce the ultrasonic intensity outside the focal point is expec... For avoiding extra-damage to healthy tissues surrounding the focal point during high intensity focused ultrasound(HIFU) treatment in medical therapy, to reduce the ultrasonic intensity outside the focal point is expected. Thus, the heating processes induced by moderate intensity focused ultrasound(MIFU) and enhanced by combined irradiation of laser pulses for bio-tissues are studied in details. For fresh bio-tissues, the enhanced thermal effects by pulsed laser combined with MIFU irradiation are observed experimentally. To explore the mechanisms of these effects, several tissue-mimicking materials composed of agar mixed with graphite powders are prepared and studied for comparison, but the laser-enhanced thermal effects in these mimicking materials are much less than that in the fresh bio-tissues. Therefore, it is suggested that the laser-enhanced thermal effects may be mainly attributed to bio-activities and related photo-bio-chemical effects of fresh tissues. 展开更多
关键词 bio-tissue focused ultrasound laser pulse irradiation thermal effect
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