ABSTRACT
Surface-level PM10 distribution was estimated from the satellite aerosol optical depth (AOD) products, taking the account of vertical profiles and hygroscopicity of aerosols over Jeju, Korea during March 2008 and October 2009. In this study, MODIS AOD data from the Terra and Aqua satellites were corrected with aerosol extinction profiles and relative humidity data. PBLH (Planetary Boundary Layer Height) was determined from MPLNET lidar-derived aerosol extinction coefficient profiles. Through statistical analysis, better agreement in correlation (R = 0.82) between the hourly PM10 concentration and hourly average Sunphotometer AOD was the obtained when vertical fraction method (VFM) considering Haze Layer Height (HLH) and hygroscopic growth factor f(RH) was used. The validity of the derived relationship between satellite AOD and surface PM10 concentration clearly demonstrates that satellite AOD data can be utilized for remote sensing of spatial distribution of regional PM10 concentration.
Subject(s)
Air Pollution/analysis , Environmental Monitoring/methods , Particulate Matter/analysis , Aerosols/analysis , Geographic Information Systems , Geography , Lasers , Linear Models , Meteorology , Models, Statistical , Optics and Photonics , Remote Sensing Technology , Republic of Korea , Satellite Communications , Weather , WettabilityABSTRACT
The objective of our study was to introduce a safe and effective method for the treatment of cervical pregnancy. This was a case series and took place at the minimal invasive surgery clinic at Soonchunhyang University Bucheon Hospital, Bucheon, Korea. From April 2005 through October 2007, a total of 10 patients with cervical pregnancy underwent hysteroscopic surgery. An 18 F foley catheter was inserted through the cervical canal after dilation, and the uterine cavity was irrigated with 3.5% H2O2 300 mL for prevention of unrelenting bleeding. Hysteroscopic removal of cervical gestation under ultrasonographic guidance was performed uneventfully. All patients had an unremarkable postoperative course. Serum beta-human chorionic gonadotropin levels were monitored after surgery and exhibited optimal decrease. All cases had histologic confirmation of products of conception removed from the cervix. The estimated blood loss was less than 50 mL. All patients were discharged after the first or second postoperative day. Hysteroscopic removal of cervical pregnancy with H2O2 is very useful and safe and preserves fertility.
Subject(s)
Abortion, Therapeutic/methods , Cervix Uteri/surgery , Hydrogen Peroxide/administration & dosage , Oxidants/administration & dosage , Pregnancy, Ectopic/surgery , Adult , Amnion/blood supply , Cohort Studies , Female , Humans , Hysteroscopy/methods , Postoperative Hemorrhage/prevention & control , Pregnancy , Pregnancy, Ectopic/diagnostic imaging , Therapeutic Irrigation , UltrasonographyABSTRACT
In order to investigate the characteristic of optical properties of Asian dust particles, the atmospheric aerosol vertical profile was measured with the multi-wavelength LIDAR system, at the Gosan super site (33 degrees 17'N, 126 degrees 10'E) in Jeju Island, Korea, during the ACE-Asia intensive observation period, 11 March-4 May 2001. An air mass backward trajectory analysis, using Hysplit-4, was carried out to track the aerosol plume, with high mass loading, from the Chinese desert regions during the period of Asian dust storm events. Vertical atmospheric aerosol profiles on three major Asian dust storm event days, 22 March and 13 and 26 April 2001, have been analyzed. The LIDAR-derived aerosol optical depth values were compared with those measured by a collocated sunphotometer.
