Conventional material removal of BK7 optical glass will normally result in brittle fracture at the surface, generating severe subsurface damage and poor surface finish. Subsurface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. However, through ductile mode grinding it is possible to reduce the surface and subsurface cracks. It is m...

Abstract This study evaluates the characteristics of river runoff and sediment changes in Wei River mainstream over past 50 years based on data meteorological from 1971 to 2020 at Huaxian hydrological station lower reaches River. The main research methods are Mann–Kendall method, wavelet analysis, cross-wavelet cumulative curve method. results show that there is no significant decreasing trend ...

The Brixenbach valley is a small Alpine torrent catchment (9.2 km2, 820–1950 m a.s.l., 47.45°, 12.26°) in Tyrol, Austria. Intensive hydrological research the since more than 12 years, including hydrogeological survey, pedological and land use mapping, measurements of precipitation, runoff, soil moisture infiltration as well conduction rainfall simulations, has contributed to understand response...

Hewlett and Hibbert’s (1967) ‘Factors affecting the response of small watersheds to precipitation in humid areas’ (hereafter referred to as ‘Factors’) is one of the most important papers published in the field of catchment hydrology. Despite its grey literature appearance as a proceedings paper from the fi rst International Symposium on Forest Hydrology at Penn State University, the work outlin...

introduction: gully erosion is an important type of soil erosion in iran and ardebil province (moghimi and salami, 2011; khatibi, 2006). increasing the cross section of gullies is an indicator for gully developing (deng et al, 2015). topography and soil properties are two important factors in gully developing in various regions of worldwide (poesena et al, 2003). despite the importance of soil ...