Selectfluor-Mediated Electrophilic Annulation of 2-Alkynyl Biaryls with Diorganyl Diselenides.

A general and efficient method for the synthesis of various selanyl phenanthrenes/polycyclic heteroaromatics through the electrophilic annulation of 2-alkynyl biaryls with diorganyl diselenides under metal-free and mild conditions was established. The sulfanyl phenanthrene was also obtained in moderate yields.

Modifying a D-A-π-A-D HTM system for higher hole mobility by the -substitution strategy to weaken the electron-donating ability of the donor unit: a DFT study.

Tuning the electron-donating ability (EDA) of the donor units of hole transporting materials (HTMs) is an efficient strategy to modulate the optoelectronic properties of HTMs. Based on this strategy, we first theoretically investigated the effects of the EDA of donor units on D-A-π-A-D architectural HTMs. The results show that the enhanced EDA of the donor unit leads to larger hole reorganization energy and poorer molecular stability of HTMs.

A simplified and sensitive LC-APCI-MS/MS method for the quantification of propofol: Application to a bioequivalence study in healthy Chinese subjects.

Objectives: Propofol has become the preferred anesthetic in recent years due to its desirable pharmacologic properties. However, propofol possesses a very narrow therapeutic window between the favorable clinical effect and potentially lethal toxicity, therefore, a rapid, simplified, and sensitive liquid chromatography-atmospheric pressure chemical ionization tandem mass spectrometry (LC-APCI-MS/MS) method is presented in this study for the quantification of propofol in human plasma using the isotope-labeled internal standard (IS) of propofol-d17, and then applied in a bioequivalence study.

Materials And Methods: Sample preparation was accomplished through simple one-step precipitation of plasma protein with acetonitrile.

[Adsorbable organic halogen compounds and bio-toxicity in hospital wastewater treatment].

Adsorbable organic halogen compounds (AOX) exist persistently in the aquatic environment, and accumulate in the food chain. Some of them are toxic for humans and other organisms. However, hospital wastewater is considered as an important source of AOX in municipal wastewater.

The reverse posterior interosseous flap and its composite flap: experience with 201 flaps.

Objective: To introduce our experiences of using the reverse posterior interosseous flap and its composite flap.

Methods: In the series of 201 cases, the fasciocutaneous flap was used to cover skin defects over the distal 1/3rd forearm, wrist and hand in 174 cases. The composite flap with the vascularised ulna bone graft was used to reconstruct the thumbs in 11 cases, and with the vascularised tendon graft was used to repair tendon defects with skin defects in 16 cases.

Vascularized capitate transposition for advanced Kienböck disease: application of 40 cases and their anatomy.

Based on anatomic study, the vascularized capitate transposition to replace excised necrotic lunate was designed and applied in 40 cases of advanced Kienböck disease. It includes excision of the necrotic lunate and proximal shift of the vascularized capitate. The blood supply of the transposed capitate is provided by the dorsal branch of the anterior interosseous artery.

Fracture strength of custom-fabricated Celay all-ceramic post and core restored endodontically treated teeth.

Background: The increased use of all-ceramic crown provides a rationale for tooth-colored core. Due to superior mechanical properties, Vita Celay infiltration ceramic developed for crown and bridge works presents the potential for fabricating all-ceramic posts and cores in one piece. This study was conducted to compare the fracture strength of endodontically treated teeth which were thereafter given different types of posts and cores and crowns restoration, respectively.