Based on the distortion theory developed by Cui and Tan (2015), we prove the landing of every parameter ray at critical ......

The dynamics between sound decay and soundscape determines the acoustical worship heritage in a worship space that needs......

本文论述了产于蓟县高于庄组的盘绕带状宏观化石ＳａｎｇｓｈｕａｎｉａＤｕ，１９９６应是后生动物遗迹化石，其依据是：１）化石产于岩层内，而非层面上，有三维空间分布。２）化石多见......

Objectives: There is a risk of spreading infectious material via non-sterile impressions. The aim of this study was to c......

Objectives: There is a risk of spreading infectious material via non-sterile impressions. The aim of this study was to c......

Purpose: The aim of this investigation was to evaluate and compare the dimensional accuracy of hydrophilic polysiloxane,......