Vibration performances of polymeric micropump actuated by PbZrTiO 3 bimorph

Micro & nano letters

article

Yi Luo¹  Xianglong Yin¹  Xiaodong Wang¹  Zongbo Zhang² 

[1] Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology;College of Mechanical and Electronic Engineering, China University of Petroleum

关键词: finite element analysis;    lead compounds;    microactuators;    micropumps;    optimisation;    valves;    vibrations;    zirconium compounds;    vibration performances;    polymeric micropump;    bimorph;    check valve micropump;    high-flow rate;    actuator;    membrane;    coupling influence;    finite element method;    frequency sweeping;    optimisation;    PbZrTiO3;   

DOI  :  10.1049/mnl.2013.0257

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

We present a case of severe hypercalcemia with extensive venous and arterial thrombosis that led to the patient’s demise in the setting of possible multiple endocrine neoplasia (MEN) type 2a. A 35-year-old female presented to the emergency with nausea and vomiting for one week. Physical examination revealed dry mucous membranes, a thyroid nodule on left side and epigastric tenderness. Initial investigations revealed evidence of renal impairment and hypercalcemia. Parathyroid hormone (PTH) level was very high. Ultrasound of the thyroid showed a solitary left thyroid nodule with mixed cystic and solid isoechoic echogenicity. The patient developed progressive dyspnea and hypoxemia, which mandated mechanical ventilation. Dialysis was initiated via the right femoral catheter and stopped due to extensive venous thrombosis of the right lower limb. Pulmonary emboli were excluded and pulmonary edema was confirmed by computed tomography. The patient was subsequently intubated for persistent respiratory distress. The same condition occurred in the right upper limb. Fine needle biopsy of the left thyroid nodule revealed medullary thyroid cancer. The consulting team preferred to manage her conservatively as she was rapidly-deteriorating. She developed progressive shock and multi-organ failureed.

【 授权许可】

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