Piezocone penetration tests with dissipation phases are particularly useful for geotechnical site characterization. They also provide three independent readings with depth from a single sounding as well as time-rate information. In past investigations, only silty sands with specific silt content have been tested and complete sets of tests have not been conducted to evaluate the influence of dif...

the paper is concerned with the hydrogeological appraisal of the proposed mining operations in thethar lignite field in sindh, pakistan. the thar coalfield covers an area of approximately 9000km2 andcontains three lignite seams lying at depth of 130m to 250 m. in the thar lignite field, the presence ofthree main aquifers induces pore pressure in the rock mass surrounding the lignite seams and m...

Let d be a fixed positive integer and let ε > 0. It is shown that for every sufficiently large n ≥ n0(d, ε), the d-dimensional unit cube can be decomposed into exactly n smaller cubes such that the ratio of the side length of the largest cube to the side length of the smallest one is at most 1 + ε. Moreover, for every n ≥ n0, there is a decomposition with the required properties, using cubes of...

In this paper we give a new lower bound on the length of Snake-in-the-Box Codes, i.e., induced cycles in the d-dimensional cube. The bound is a linear function of the number of vertices of the cube and improves the bound c · 2/d, where c is a constant, proved by Danzer and Klee. AMS subject classification 1980: 05 C 35, 94 B 25

Under long-term traffic loading, the soil elements in subgrade are subjected to continuous principal stress rotation. In order study deformation properties of soft clays under loading with rotation, a series cyclic torsional shear tests were conducted on Wenzhou different ratios and degrees The test results showed stiffness softening loading. addition, rotation induced by aggravated clay sample...

We report an approach to fully visualize the flow of two immiscible fluids through a model three-dimensional (3-D) porous medium at pore-scale resolution. Using confocal microscopy, we directly image the drainage of the medium by the nonwetting oil and subsequent imbibition by the wetting fluid. During imbibition, the wetting fluid pinches off threads of oil in the narrow crevices of the medium...

A network model that investigates electrical resistivity and capillary pressure curves of oil/water/rock systems for a full̄ooded cycle (primary drainage, imbibition and secondary drainage) is presented. This model uses a realistic pore geometry in the form of a grain boundary pore (GBP) shape and pore constrictions. The model also incorporates pore-scale displacement mechanisms and pore-scale w...

Let $k \geq 1$ be a cube-free integer with \equiv 1 \pmod {9}$ and $\gcd (k, 7\cdot 571)= 1$. We prove the existence of infinitely many triples imaginary quadratic fields $\mathbb {Q}(\sqrt {d})$, {d+1})$ {d