Ionospheric disturbances observed coincident with the 2006 and 2009 North Korean underground nuclear tests

Traveling ionospheric disturbances triggered by the 2009 North Korean underground nuclear explosion

Underground nuclear explosions (UNEs) can induce acoustic-gravity waves, which disturb the ionosphere and initiate traveling ionospheric disturbances (TIDs). In this paper, we employ a multi-step and multi-order numerical difference method with dual-frequency GPS data to detect ionospheric disturbances triggered by the North Korean UNE on 25 May 2009. Several International GNSS Service (IGS) st...

Ionospheric disturbances observed by the PALSAR onboard ALOS satellite

Colonoscopy outcome in North of Iran (Guilan): 2006-2009.

UNLABELLED Colonoscopy is a procedure that used largely, in assessment, screening & management of lower gastrointestinal disease. Some of these diseases that assessed are colorectal cancer, polyps & inflammatory bowel disease. The goal of this study is determining of frequency of lower GI disease among patient who have elective colonoscopy. This cross-sectional study was conducted retrospective...

the past hospitalization and its association with suicide attempts and ideation in patients with mdd and comparison with bmd (depressed type) group

چکیده ندارد.

Sbas Ionospheric Performance Evaluation Tests

Satellite Based Augmentation systems (SBAS) provide to Global Navigation Satellite Systems (GNSS) users with an extra set of information, in order to enhance accuracy and integrity levels of GNSS stand alone positioning. In this context, different test methods to analyze the ionospheric corrections performance are presented. The first set of tests involves two of the ionospheric calculations th...