High-Precision and Real-Time Measurement of Water Isotope Ratios Based on a Mid-Infrared Optical Sensor.

A compact spectrometer based on a mid-infrared optical sensor has been developed for high-precision and real-time measurement of water isotope ratios. The instrument uses laser absorption spectroscopy and applies the weighted Kalman filtering method to determine water isotope ratios with high precision and fast time response. The precision of the measurements is 0.

Nonthermal plasma coupled with liquid-phase UV/Fe-C for chlorobenzene removal.

Catalyst poisoning problems limit the application of gas-solid non-thermal plasma (NTP) catalyzed decomposition of chlorinated volatile organic compounds (Cl-VOCs). To mitigate the catalyst deactivation, catalyst iron-loaded activated carbon (Fe-C) was added to the UV-activated liquid phase downstream of the NTP reactor (NTP + UV/Fe-C(L)) for the degradation of chlorobenzene (CB) in this study. The CB removal efficiency and mineralization efficiency (MR) of NTP + UV/Fe-C(L) were up to 94% and 68%, respectively, which were increased by 39% and 30% compared with the single NTP system.

Line positions and effective line strengths of trans-HONO near 1280 cm.

The measurement of the line positions and effective line strengths of the ν fundamental band of trans-nitrous acid (trans-HONO) near 1280 cm (7.8 µm) by tunable laser absorption spectroscopy (TLAS) utilizing a room temperature continuous-wave quantum cascade laser (cw-QCL) was reported. The effective line strengths of 30 well-resolved trans-HONO absorption lines in the range of 1279.

In situ measurement of water vapor isotope ratios in air with a laser-based spectrometer.

Simultaneous measurement of HO/HO, HO/HO, and HDO/HO in air with a compact spectrometer based on a mid-infrared distributed feedback (DFB) laser was described. The obtained mixing ratios of HO, HO, and HO agreed reasonably well with those measured by a hygrometer. The precision and repeatability of the spectrometer were analyzed.

Dielectric barrier discharge coupled with Fe, Mn and Cu scrubbing for toluene removal.

By-product ozone emission is one of the challenges for applying dielectric barrier discharge (DBD) technology for volatile organic compounds (VOCs) removal. In this study, a DBD reactor followed by a wet scrubber (WS) containing a solution of metal ions (Fe/Mn/Cu) was used to reuse ozone for further oxidation of typical VOC toluene. Compared with the degradation effect of the DBD reactor alone, DBD coupled WS/iron system not only improved the toluene removal efficiency but also significantly reduced the ozone emission.

[Clinic analysis of 16 patients of craniocerebral trauma with Labbé vein injury].

Objectives: To study the mechanism of Labbé vein injury, and its effect on traumatic cerebral infarction and prognosis in patients of craniocerebral trauma.

Methods: The clinic imageology and data of 16 patients of craniocerebral trauma with Labbé vein injury approved intraoperatively from June 2006 to February 2009 were analyzed. To compare the effect of the intraoperative finding of Labbé vein damage and blood vessel treatment on traumatic cerebral infarction, and to analyze the traumatic cerebral infarction size and prognosis.