DRA-UNet for Coal Mining Ground Surface Crack Delineation with UAV High-Resolution Images.

Coal mining in the Loess Plateau can very easily generate ground cracks, and these cracks can immediately result in ventilation trouble under the mine shaft, runoff disturbance, and vegetation destruction. Advanced UAV (Unmanned Aerial Vehicle) high-resolution mapping and DL (Deep Learning) are introduced as the key methods to quickly delineate coal mining ground surface cracks for disaster prevention. Firstly, the dataset named the Ground Cracks of Coal Mining Area Unmanned Aerial Vehicle (GCCMA-UAV) is built, with a ground resolution of 3 cm, which is suitable to make a 1:500 thematic map of the ground crack.

Comparison of Typical Alpine Lake Surface Elevation Variations and Different Driving Forces by Remote Sensing Altimetry Method.

Alpine lakes play a significant role in improving watershed ecology, adjusting water storage, and managing regional water resources. They are also a valuable freshwater reservoir, flood storage, and species gene pool in Central Asia. This article validated the accuracy of the CryoSat-2 footprints altimetry dataset for the Lake Bosten and Lake Issyk-Kul ranges.

Monitoring the Spatiotemporal Difference in Glacier Elevation on Bogda Mountain from 2000 to 2017.

The difference in glacier surface elevation is a sensitive indicator of climate change and is also important for disaster warning and water supply. In this paper, 25 glaciers on Bogda Mountain, in the eastern Tianshan Mountains, are selected as the study object as they are typical of glaciers in arid or semi-arid areas with importance for water supply. The Repeat Orbit Interferometry (ROI) method is used to survey the surface elevation of these glaciers using Sentinel-1A Radar data from 2017.

Deformation Time Series and Driving-Force Analysis of Glaciers in the Eastern Tienshan Mountains Using the SBAS InSAR Method.

Glacier melting is one of the important causes of glacier morphology change and can provide basic parameters for calculating glacier volume change and glacier mass balance, which, in turn, is important for evaluating water resources. However, it is difficult to obtain large-scale time series of glacier changes due to the cloudy and foggy conditions which are typical of mountain areas. Gravity-measuring satellites and laser altimetry satellites can monitor changes in glacier volume over a wide area, while synthetic-aperture radar satellites can monitoring glacier morphology with a high spatial and temporal resolution.

Comparison of endoscopic surgery and Lichtenstein repair for treatment of inguinal hernias: A network meta-analysis.

Background: This study aimed to identify the best procedure for addressing inguinal hernias by comparing results after transabdominal preperitoneal (TAPP), totally extraperitoneal (TEP), and Lichtenstein repairs using a network meta-analysis.

Methods: We conducted a systematic search of MEDLINE, Web of Science, the Cochrane Central Library, and ClinicalTrials.gov up to September 1, 2018 for randomized controlled trials (RCTs) comparing the TAPP, TEP, and Lichtenstein procedures.

Comparative Efficacy of 9 Major Drugs for Postendoscopic Retrograde Cholangiopancreatography Pancreatitis: A Network Meta-Analysis.

Background: Postendoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) is one of the most common complications after ERCP. The optimal drugs for reducing the risk of PEP are still unclear. This study aimed to compare the efficacy of 9 major drugs used worldwide for the prevention of PEP through a network meta-analysis.

Minimally Invasive Versus Open Pancreaticoduodenectomy: An Up-to-Date Meta-Analysis of Comparative Cohort Studies.

Background: This systematic review and meta-analysis were performed to summarize available evidence comparing totally minimally invasive pancreaticoduodenectomy (TMIPD) versus open pancreaticoduodenectomy (OPD) Materials and Methods: We searched PubMed, Embase, Web of Science, Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov for comparative cohort studies published from January 1990 through April 2018 comparing TMIPD versus OPD. Outcomes evaluated were postoperative pancreatic fistula (POPF), delayed gastric emptying (DGE), postoperative hemorrhage, wound infection, estimated blood loss, transfusion rate, retrieved lymph nodes (RLNs), R0 rate, reoperation rate, length of hospital stay, and mortality.

What is impact of nonsteroidal anti-inflammatory drugs in the prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis: a meta-analysis of randomized controlled trials.

Background: Recently, although studies have investigated the role of NSAIDs in the prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis (PEP), selection of the ideal drug, the time and route of its administration for the appropriate population remain controversial.

Methods: A systematic search was done in sources including PubMed, Embase, Web of Science, the Cochrane Library Central, and ClinicalTrials.gov from from August 1, 1990 to August 1, 2017.