Analysis of Oxygen Concentration in the Oral Cavity During Intravenous Sedation with Intranasal Oxygen Administration for Dental Treatment.

Purpose: Intravenous sedation (IVS) with propofol (PPF) is commonly performed in dental treatment, particular in patients with dentophobia, with gag reflex, or undergoing implant surgeries, as PPF has the advantages of rapid induction and recovery. However, PPF and other intravenous sedatives may cause respiratory depression. Thus, IVS with PPF requires oxygen administration.

Precessing jet nozzle connecting to a spinning black hole in M87.

The nearby radio galaxy M87 offers a unique opportunity to explore the connections between the central supermassive black hole and relativistic jets. Previous studies of the inner region of M87 revealed a wide opening angle for the jet originating near the black hole. The Event Horizon Telescope resolved the central radio source and found an asymmetric ring structure consistent with expectations from general relativity.

A new large tellinid species of the genus from the Ryukyu Archipelago, Japan (Mollusca, Bivalvia).

A new tellinid species, , is described from sand banks around Amami Islands, the Ryukyu Archipelago, in southern Japan. A molecular phylogenetic analysis suggests that this new species is closely related to . This species has long siphons and lives buried deep in well-sorted white sand syntopically with .

[A successful case of hepatocellular carcinoma with portal venous tumor thrombus (Vp2) treated by transcatheter arterial chemoembolization].

We reported a case of hepatocellular carcinoma (HCC) with portal venous tumor thrombus (PVTT) (Vp2) successfully treated by transcatheter arterial chemoembolization (TACE), and the tumor showed complete response and the patient survived for 28 months. A 67-year-old male was diagnosed with HCC in the area of subsegment 5 with PVTT from the P5 to the posterior branch. He was treated by segmental TACE.