Stress conditions are critical in deep hard rock mining and significantly influence cuttability. The peak cutting force (PCF), work (CW), specific energy (SE) can reflect cuttability determine the feasibility saving of mechanized to some extent. In this paper, uniaxial lateral stress on was investigated by an indentation experiment cuboid using a conical pick, theoretical model proposed analyze...

The two most frequently heard terms in the mining industry are safety and production. These put a lot of pressure on blasting engineers crew to give more while consuming less. key achieving optimum results is sophisticated bench analysis, which must be combined with design blast parameters for good fragmentation safe ground vibration. Thus, unique solution forecasting both reduced vibration usi...

The article presents research on the erosion of metamorphic rock - marble by Abrasive Water Jet (AWJ). fragmentation abrasive grains during process is demonstrated. effect cutting process's most important parameters as traverse speed, nozzle ID, and mass flow rate, maximum depth, shown. To create a mathematical-statistic model process, methodology response surface (RSM) was used for modeling. p...

Background Sperm DNA fragmentation is known as an important cause of male infertility. The influence of sperm DNA damage on reproductive potential has been subject of many studies indicating various results and remaining the subject controversial. In this study, we investigated differences of the semen parameters and intracytoplasmic sperm injection (ICSI) outcome according to sperm DNA fragmen...

1 A Case Study on Data Quality, Privacy, and Evaluating the Outcome of Entity Resolution Processes Pei Wang, University of Arkansas at Little Rock, Little Rock, AR, USA Daniel Pullen, University of Arkansas at Little Rock, Little Rock, AR, USA Fan Liu, University of Arkansas at Little Rock, Little Rock, AR, USA William C. Decker, University of Arkansas at Little Rock, Little Rock, AR, USA Ningn...

estimate the proportion of fines generated during the blasting process. The proposed framework is based on the combination of two Rosin-Rammler based distribution functions to model the full range of fragments expected to be produced during this process. This particular approach, which has been successfully applied for a number of years by the Julius Kruttschnitt Mineral Research Centre (JKMRC)...

We calculate the exact fragmentation functions for c and b quark fragmentation taking into account the spin orientation of the initial heavy quark in the form of analytical and rather simple expressions. Our calculations show that spin orientation may have an important effect on the fragmentation spectrum. This effect is more striking in the cases of c ?D, D*; c? ? , ? , and ?B , B *.