An orebody model constitutes a threedimensional accumulation of mining units (blocks). The available metal content in a mining unit and the economic parameters, such as metal price, mining cost, processing cost, marketing or selling cost, as well as the metallurgical recovery, are used to calculate the economic value of a particular mining block. A mining block with a positive value is classifi...

Amankwah, H. (2011). Mathematical Optimization Models and Methods for Open-Pit Mining. Doctoral dissertation. ISBN 978-91-7393-073-4. ISSN 0345-7524. Open-pit mining is an operation in which blocks from the ground are dug to extract the ore contained in them, and in this process a deeper and deeper pit is formed until the mining operation ends. Mining is often a highly complex industrial operat...

One of the main stages in design mineral development process is solution finding optimal open pit problem. It necessary to take into account spatial distribution components and allowable slope angles sides during solving this The basis for performing calculations optimize extraction reserves a digital block model deposit. larger more accurate ore deposit requires computationally complex calcula...

Compressive imaging using sparsity constraints is a very promising field of microscopy that provides dramatic enhancement the spatial resolution beyond Abbe diffraction limit. Moreover, it simultaneously overcomes Nyquist limit by reconstructing an N -pixel image from less than single-point measurements. Here we present fundamental limits noiseless compressive via constraints, speckle illuminat...

Water transport in conifers occurs through single-celled tracheids that are connected to one another via intertracheid pit membranes. These membranes have two components: the porous margo, which allows water to pass through the membrane, and the impermeable torus, which functions to isolate gas-filled tracheids. During drought, tracheids can become air filled and thus hydraulically dysfunctiona...

One of the big challenges in exoplanet science is to determine atmospheric makeup extrasolar planets, and find biosignatures that hint at existence biochemical processes on another world. The biomarkers we are trying detect gases atmosphere like oxygen or methane, which have deep absorption features visible near-infrared spectrum. Here establish ultimate quantum limit for determining presence a...

Conventional open pit mine optimization models for designing mining phases and ultimate pit limit do not consider expected variations and uncertainty in metal content available in a mineral deposit (supply) and commodity prices (market demand). Unlike the conventional approach, a stochastic framework relies on multiple realizations of the input data so as to account for uncertainty in metal con...