The present study describes entrainment characteristics of bed material into debris flow, based on flume tests, numerical and dimensional analyses. Flume tests are conducted to investigate influences of bed sediment size on erosion rate by supplying debris flows having unsaturated sediment concentration over erodible beds. Experimental results show that the erosion rate decreases monotonically ...

We propose a new data analyzing scheme, the method of minimum entropy analysis (MEA), in this paper. New MEA provides a quantitative criterion to select relevant variables for modeling the physical system interested. Such method can be easily extended to various geophysical/geological data analysis, where many relevant or irrelevant available measurements may obscure the understanding of the hi...

in our search for new anticancer medicinal plants, the antiproliferative activity of the methanol extract of daphne mucronata (thymelaeaceae) was evaluated using human myelogenous leukemia k562 cells. the cells responded to plant treatments in a dose dependent manner and the ic50 of the crude extract (equivalent to 1 g of plant leaves powder per ml) and the purified active component were found ...

In order to study the phenomena of debris flow motion and deposition at transition between a channel an underwater storage area, experiments were carried out on physical model. The current situation planned works reproduced in two idealised 1:100 scale models. show that flows experience abrupt into water with creation wave enter lake undergoing decrease front velocity, but without creating upst...

During a landslide, the multi-phase nature of landslide debris defines its mobility. Eventually, frictional forces cause slide energy to dissipate, and contact transmit into nearby material. Using comparative analysis which analyzes mobility characteristics flow-like landslides with various materials, we conducted flume model experiment. Our conclusions are as follows: (1) liquid-phase highly m...

Where the potential for future debris-flow occurrence is unrecognised, developments can be unknowingly exposed to impact, with corresponding risks lives. Debris-flow modelling unsuited routine local office use, so a simple screening procedure proposed enable officials identify locations where debris flow risk-to-life may unacceptable, and prioritise expert risk analysis are most urgently requir...

Emergency risk assessment of debris flows in residential areas is of great significance for disaster prevention and reduction, but the assessment has disadvantages, such as a low numerical simulation efficiency and poor capabilities of risk assessment and geographic knowledge sharing. Thus, this paper focuses on the construction of a VGE (virtual geographic environment) system that provides an ...

Debris flow erosion into bedrock helps to set the pace of mountain denudation, but there are few empirical observations this process. We studied effects debris flows on using Structure-From-Motion photogrammetry and multiple real-time monitoring measurements. found that distribution across channel cross-section could be generalized as an exponentially decreasing function height above thalweg. U...

Landslide occurrence in the Salmon Arm and Vernon forest districts in the last five years has stimulated research to determine how small drainage basins might be classified into debris flow prone, debris flood prone, or flood prone. Alluvial fans situated at the base of several entrenched stream systems may have people dwelling on them. In addition to safety concerns, water quality and habitat ...