The transportation behaviors and dynamic characteristics of double emulsion droplets in a Y-junction are experimentally investigated to explore the influence interfacial tension. Based on breakup behaviors, three flow patterns identified: non-breakup (NB), once outer droplet (OB), twice (TB). Compared single emulsions, inner leads new for emulsions due coupling effect between interfaces. pattern map can be built using normalized length capillary number. With aid quantitative expression...

In this paper, we use the extraction method of multi-factors fusion to extract Highland barley cultivation area on Qinghai–Tibet Plateau. The study results indicate that: (1) (extracting through fusion) is efficient during extracting process and highly accurate in results. This scheme allows for not only spatial heterogeneity different physical geographic units, but also impact crop cultivation; (2) according our research, total Plateau about 2.74 × 105 ha. Based statistics, draw first...

Dynamic behaviors of droplets transporting through the cross junction are experimentally and theoretically studied. The influences initial droplet length, total flux, flow rate combination different inlets systematically analyzed. Under influence opposite flow, more types patterns thresholds two (breakup obstruction) obtained after a comparison with other references. Deformation characteristics in stages discussed detail regarding time-dependent lengths their evolution rates. An empirical...

Tropical cyclones (TCs) and their associated intense rainfall are among the most significant natural disasters. Exploring characteristics of tropical cyclone precipitation (TCP) has always been a challenging issue in TC research. This study utilized track data from International Best Track Archive for Climate Stewardship multi-source weighted-ensemble covering years 1980-2019, to examine shifts rates peak levels before after landfall. The results highlight several key findings: (1)...

The rapid and effective identification of the spatial distribution rock deserts in ice–snow melting areas can provide useful information for prevention natural disasters. In this study, Landsat TM/OLI were used to track evolution snow lines Yushu Tibetan Autonomous Prefecture Qinghai-Tibet Plateau (hereinafter referred as Prefecture) during last 30 years. A total seven extraction schemes classify desert area by remote sensing. Our results show that: (1) accuracy multi-index factor compound...

It is necessary that research ecological risk and protection to Three Parallel Rivers world heritage site in China. Select forest fire, landslide debris flow as a natural source, urban construction, tourism, fuel timber artificial ecology we have confirmed the end point. The study area was divided into subdistrict, obtained every subdistrict comprehensive value with calculation model by GIS, Have evaluated spatial distribution area. We make safety planning. whole three level, first level...

Abstract：The internal solitary waves (ISWs) in the ocean carry huge energy and pose a serious threat to safety of underwater vehicle. In order obtain dynamic response submarine under action ISWs, amplified SUBOFF model was placed large numerical water tank with length 5000m, width 200m depth 500m. The Korteweg-de Vries (KdV) theory adopted simulate generation ISWs two-layer flow, overset grid technology used ensure quality during movement. results show that before peak reaches position...

The world natural heritage Three Parallel Rivers core area Shangri-la County faced all kinds of ecological risk, and risk assessment contributes to the management. Have chosen 10 main types landscape in as receptors, ensured source be forest fires, landslides mudslides, urban construction, tourism, wood used for building life, have carried through exposure hazard analysis. Based on RS GIS, first calculated pattern index area, then constructed loss damage index. According proposed regional...

In this study, a 2D fully-nonlinear numerical wave tank is developed based on the time-domain higher-order boundary element method. Non-periodic waves acting vertical cliff are investigated. The fully nonlinear kinematic and dynamic conditions satisfied instantaneous free surface. mixed Eulerian-Lagrangian method adopted to track transient water particle surface fourth order Runge-Kutta used predict velocity potential elevation Then acceleration technique calculate temporal derivative of...

Summary In seismic survey, undesired obstacles are often encountered where sources cannot be placed. This kind of acquisition gaps usually leads to missing structural information the subsurface in conventional migration using primaries. Multiples with longer propagation paths and smaller reflection angles can provide wider illumination compared Besides, theoretical analysis shows that separated imaging first-order multiples avoid introduction crosstalk artifacts. Therefore, get more under...