Abstract. Ground temperatures in coarse, blocky deposits such as mountain blockfields and rock glaciers have long been observed to be lower comparison with other (sub)surface material. One of the reasons for this negative temperature anomaly is soil moisture content terrain, which decreases duration zero curtain autumn. Here we used CryoGrid community model simulate effect drainage on ground th...

Abstract Rock anchors are used to stabilise large-scale infrastructure such as the foundations of high buildings or road cuts, and their failure could lead severe economic social consequences. A rock anchor can fail in one more following four modes; breakage tendon steel, tendon-grout bond failure, grout-rock mass failure. In current design, knowledge for first two modes is satisfactorily known...

the development of nano/ultrafine bainitic structure in aisi 52100 steel was the goal of this study. for this purpose,the aisi 52100 the specimens were austenitized at 1050 °c for 60 min followed by low-temperature austemperingtreatment at different temperatures and times. the austempered samples were characterized using field emissionscanning electron microscopy (fesem), x-ray diffraction (xrd...

We compare three previously independently studied crater morphologies – excess ejecta craters, perched craters, and pedestal craters – each of which has been proposed to form from impacts into an ice-rich surface layer. Our analysis identifies the specific similarities and differences between the crater types; the commonalities provide significant evidence for a genetic relationship among the m...

Abstract Vein microstructures contain a wealth of information on coupled chemical and mechanical processes fracturing, fluid transport, crystal growth. Numerical simulations have been used for exploring the factors controlling development vein microstructures; however, they not quantitatively validated against natural veins. Here we combined phase-field modeling with microtextural analysis prev...

The main issue in any image zooming techniques is to preserve the structure of the zoomed image. The zoomed image may suffer from the discontinuities in the soft regions and edges; it may contain artifacts, such as image blurring and blocky, and staircase effects. This paper presents a novel image zooming technique using Partial Differential Equations (PDEs). It combines a non-linear Fourth-ord...

JPEG is one of the most widely used image compression method, but it causes annoying blocking artifacts at low bit-rates. Sparse representation is an efficient technique which can solve many inverse problems in image processing applications such as denoising and deblocking. In this paper, a post-processing method is proposed for reducing JPEG blocking effects via sparse representation. In this ...

The hardened microstructure of 5 wt.% Cr cold work tool steels is mainly martensitic with significant amount retained austenite and some undissolved carbides. Whereas the after tempering shows amounts angular shaped blocky regions, which are interpretated as or fresh martensite. distinction between phases difficult due to morphological similarities. Therefore, regions characterized by electron ...

The phase composition of nanobainitic steel 0.56–0.60%C, 1.68–1.95%Mn, 1.58–1.80%Si, 1.30–1.47%Cr, 0.57–0.75%Mo is described in this paper. controlled order to obtain diversified mechanical properties for specific applications, such as armor plates. effect temperature and time isothermal heat treatment on both the microstructure were determined. Dilatometric studies, well measurements volume fr...

In annular laser metal deposition (ALMD), Ti6Al4V alloy is sensitive to oxygen. this research, a coaxial double-layer shielding gas nozzle was used provide local inert atmosphere. The influence of the oxygen concentration in shield on cladding quality evaluated regarding appearance, chemical composition, microhardness, microstructure, and phase constituent. results show that surface discolorati...