An Accuracy Study of the Intracavitary Electrocardiogram (IC-ECG) Guided Peripherally Inserted Central Catheter Tip Placement among Neonates.

Objective: To explore the clinical application of the intracavitary electrocardiogram (IC-ECG) guided Peripherally Inserted Central Catheter (PICC) tip placement among neonates.

Background: the ECGs of neonates are difficult to perform and their wave shapes are of doubtful accuracy due to various interfering factors.

Method: 115 neonates were admitted to perform PICC guided by IC-ECG.

[Laser speckle suppression due to dynamic multiple scattering scheme introduced by oblique incidence].

Speckle suppression has been the research focus in laser display technology. In the present paper, the relation between multiple scattering and the size of speckle grains is established by analyzing the properties of speckle generated by the laser beam through SiO2 suspension. Combined with dynamic light scattering theory, laser speckle suppression due to dynamic multiple scattering scheme introduced by oblique incidence is proposed.

[An in vitro study of the relationship between KiSS-1 expression and hepatoma carcinoma cell proliferation, adhesion, and invasion].

Objective: To investigate the impact of expression of kisspeptin-1 (KiSS-1) metastasis-suppressor gene on the proliferative, adhesive and invasive abilities of human hepatocellular carcinoma (HCC) using an in vitro cell system.

Methods: The highly metastatic human hepatoma cell line MHCC97-H was transiently transfected with the pcDNA3.1/HisC vector expressing the KiSS-1 gene (experimental group) or the vector without the KisS-1 gene (blank control group).