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山东普创工业科技有限公司 paratronix
岛津企业管理(中国)有限公司 岛津
北京易科泰生态技术有限公司 易科泰
德国赛多利斯集团 赛多利斯
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雾化器雾化液滴中粒径分布检测方案(激光粒度仪)

雾化吸入治疗是呼吸系统疾病治疗方法中一种十分有效的治疗方法。雾化治疗一般采用雾化器将药液雾化成微小颗粒,使药物通过呼吸吸入的方式进入呼吸道和肺部,从而达到无痛和迅速有效治疗的目的。雾化的药物液滴的大小直接影响药物的吸收效果。如果液滴大,雾化快,导致患者吸入过多的水蒸气,使呼吸道湿化,呼吸道内原先部分堵塞支气管的干稠分泌物吸收水分后膨胀,加大呼吸道阻力,可能会产生缺氧现象,且会使药液结成水珠挂在内腔壁上,对药物需求量大,造成浪费的现象,并且对于疾病雾化治疗的效果不佳。所以,雾化出来的粒度决定了雾化器的治疗效果和质量[1-3]。 济南微纳仪器股份有限公司研究开发的Winner311XP激光粒度分析仪能够对雾化液滴的粒度分布进行快速准确的测试分析并给出测试报告。 Win311XP激光粒度分析仪是以Mie散射为原理,针对国家药典中对吸入型气雾剂、喷雾剂、粉雾剂等粒度要求而研发的台式喷雾激光粒度仪,可以对各种小型喷雾装置进行测试,融和了微纳公司多种专利技术,外观小巧,能很好地对小型喷雾粒度进行测试,并实现数据的快速采集,能够可靠地在喷雾过程中实时连续测量雾化液滴的粒度分布[4-6], 1分钟内即可完成测量,并提供详细的数据报告。能够有效指导生产厂家进行成品检验和科技研发,为企业带去利润和效益。
检测样品: 其他
检测项: 粒径分布

济南微纳颗粒仪器股份有限公司

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驱动形状记忆泡沫塑料中速度场,速度矢量场检测方案(粒子图像测速)

Shape memory polymer foams may be used to treat vascular aneurysms through thermal actuation of the foam from a compacted to an expanded configuration within the aneurysm structure, thereby alleviating blood pressure on the weakened aneurysm walls and reducing potential for rupture. After delivery to the aneurysm site, fiber-delivered laser light absorbed by the foam structure is converted into thermal energy, and actuation of the foam results. Introduction of nonphysiological energy into the body during foam actuation necessitates an evaluation of potential thermal damage to nearby tissue. In the present investigation, the foam is idealized as a heat-dissipating, volumetrically static object centered in a straight tube of flowing water. Velocity profiles around the heat-dissipating device are acquired experimentally with particle image velocimetry. A computational fluid dynamics package is then used to predict the experimental velocity profiles and temperature distributions by numerical solution of the Navier-Stokes and energy equations, and agreement between the computational solution and experimental results is assessed. Discussion of this assessment, as well as several preliminary procedures leading up to the creation of the heat-dissipating device and critical analysis of the methods employed, is also given. PIV and CFD are found to be in reasonable agreement with one another. Using laser-induced fluorescence as a temperature measurement modality, which is discussed in the text insofar as the technique was attempted several times and failed, together with PIV and CFD provides a formidable array of techniques exists to characterize flow around a heated device.
检测样品: 其他
检测项: 速度场,速度矢量场

北京欧兰科技发展有限公司

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