本研究针对贲门失弛缓症患者经腹腔镜Heller-Dor肌切开术（LHMD）后随访策略不明确的临床问题，系统评估了Eckardt评分（ES）和高分辨率测压（HRM）在术后1、6、12个月随访中的应用价值。结果表明LHMD能显著改善症状及测压参数（LES压力、IRP），ES是实用的临床随访 ...

MEASUREMENTS have been made of the complex permittivity (χ'—jχ") of a series of mixed barium and strontium titanates at 9,450 Mc.—s. and 20° C. by a technique, already described 1,2, which employs a ...

Abstract: A ferroelectric metal insulator metal (MIM) varactor structure incorporating a floating metal and coplanar waveguide (CPW) has been introduced here. The work of the proposed varactor is ...

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