The concentrations of the volatile organic compounds (VOC) and reduced sulfur compounds (RSC) were measured by thermal desorber (TD)/gas chromatography (GC)/mass spectrometry (MS) and TD/GC/pulsed flame photometric detector (PFPD), respectively. The emission patterns of volatile components generally fell into three distinct stages: (1) fresh: E-0 and 1, (2)
decaying or intermediate: E-3, and (3) decayed: E-6 and 9. In terms of the magnitude of concentration (ppb) and odor activity value (OAV), H2S at the fresh stage (E-0) was the most critical component of odor with 3655 and 8915, respectively. selleck chemicals The overall results of this study, if examined in terms of the sum of OAV for all odorants during the whole period, suggest that the strongest odorant emission occurs from the fresh
boiled eggs with its value exceeding that of others by about an order of magnitude. (C) 2013 Elsevier B.V. All rights reserved.”
“This paper describes a low cost, easy-to-implement circuit for triggering ignitrons in plasma physics experiments and other pulsed power applications. Using insulated gate bipolar transistors (IGBTs) for rapid switching, the circuit delivers > 200 A peak current from a 0.1-mu F capacitor to the ignitron trigger pin with a rise time of similar to 0.6 mu s. The trigger circuit is isolated from the ignitron by a pulse transformer. Details of the circuit design and practical considerations for working with IGBTs are discussed. Sources of inductance in the system are identified, and leakage inductance associated with the pulse transformer is shown to be the primary factor limiting the pulse rise time.”
“To evaluate Bafilomycin A1 supplier the long-term outcomes of patients with prostate cancer who have pathological pT3b N0-Nx, with postoperative PSA smaller than 0.1 ng/ml and no systematic adjuvant treatment. Using a monocentric prospectively maintained database, we identified among 2,142 men who underwent minimally invasive radical
prostatectomy, 104 pT3b N0-Nx patients, with postoperative PSA smaller than SelleckIPI145 0.1 ng/ml and at least 5 years of follow-up. Patients were considered for salvage treatment at biochemical recurrence (PSA a parts per thousand yen 0.2 ng/ml). The median time of follow-up was 83.5 months (interquartile range [IQR]: 69-99). Overall, 102 patients (98 %) had T2 clinical stage or less. Specimen Gleason score was 7 in 71 patients (68 %) and smaller than 7 in 15 (14 %). Thirty-eight patients (37 %) were upgraded for Gleason score after radical prostatectomy. The overall 5-year probability of freedom from biochemical recurrence for the entire cohort was 55.8 % (95 % CI 45.8-65.8) and 73.3 % for patients who had specimen Gleason score smaller than 7 (p = 0.005). In univariate analysis, specimen Gleason score and surgical margin status were significant predictors for biochemical failure after radical prostatectomy (p = 0.05 and 0.007, respectively).