نتایج جستجو برای: blasting cost

تعداد نتایج: 389190  

2017
Ekin Ekinci

While the mobile game industry is growing with each passing day with the popularization of 3G smart devices, the creation of successful games, which may interest users, become quite important in terms of the survival of the designed game. Clustering, which has many application fields, is a successful method and its implementation in the field of mobile games is inevitable. In this study, classi...

2013
Srđan Kostić Matjaž Perc Nebojša Vasović Slobodan Trajković

In the present paper, we investigate the blast induced ground motion recorded at the limestone quarry "Suva Vrela" near Kosjerić, which is located in the western part of Serbia. We examine the recorded signals by means of surrogate data methods and a determinism test, in order to determine whether the recorded ground velocity is stochastic or deterministic in nature. Longitudinal, transversal a...

Journal: :فیزیک زمین و فضا 0
حسن بخشنده امنیه استادیار، گروه معدن، دانشکده مهندسی دانشگاه کاشان، ایران عبدالرحیم جواهریان استاد، دانشکده مهندسی نفت، دانشگاه صنعتی امیر کبیر و استاد بازنشسته، موسسه ژئوفیزیک دانشگاه تهران، ایران

in blasting operations different proportions of the energy released are consumed in fragmenting the rock mass, heating up the surrounding and some portion of it is used in propagating blast waves, causing vibration of the particles in the nearby environment. however, reflections, transmissions and absorptions lead the attenuation of these waves. the influence of the extent of rock-mass disconti...

2004
I. Onederra Julius Kruttschnitt

A review of breakage and fragmentation modelling literature has shown that only a few methodologies have been specifically developed for applications in underground production blasting. These approaches however, have applied empirical relations that do not adequately consider ring blasting geometries; have failed to appropriately respond to changes in basic design input parameters; and have pro...

2012
Bruno Ramos Chrcanovic Alexsander Ribeiro Pedrosa Maximiliano Delany Martins

We present a detailed investigation of the surface characteristics of five commercial titanium implants with different surface finishing (double acid etching, anodization and incorporation of Ca/P, acid etching and deposition of Ca/P, hydroxyapatite-blasting, acid etching and Ca/P-blasting) produced by five different manufacturers. A set of experimental techniques were employed to study the sur...

Journal: :JAMA: The Journal of the American Medical Association 1905

Journal: :JASIST 2009
Julian Warner

Each period of Western history has given rise to puzzles that have stumped most observers. From the collapse of the Carolingian empire to the fall of the Berlin Wall, for every suggested explanation, there is a convincing counter-argument. Rather than search for a custom-tailored explanation of each event, this study presents evidence of an overall pattern generated by mutations in information ...

Journal: :Minerals 2022

Proper monitoring of seismic risk and reliable evaluation destress blasting efficiency requires a well-developed network surrounding the analyzed area. Unfortunately, construction dense system using standard types seismometers accelerometers is associated with high costs development maintenance. Significant improvements in this regard may be potentially achieved by replacing expensive devices o...

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