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| 1 | Blastability evaluation for rock mass fragmentation in Iran central iron ore mines显示文摘In this research, we investigated the influence of rock mass properties, blast design parameters and explosive properties on blast fragmentation. Rock mass properties were evaluated in 51 blasting blocks using engineering geological mapping of 1961 meters of the scanline, experiments on intact rock samples and measuring P-wave velocity(Vp) for 1771 meters of seismic profiles. The results indicate that increasing spacing, persistence, opening, roughness, waviness of discontinuities, and Vp and uniaxial compressive strength(UCS) of intact rock as well as the increase of discontinuities angle with the bench face of blasting block will increase the size distribution of blasted rocks. In addition, evaluation of the influence of connector type, specific drilling and specific charge has shown that using the Nonel system will decrease the mean size of fragmentation. It is also demonstrated that increasing specific drilling and specific charge quantities will result in the increase of mean size of fragmentation. | Akbari Majid Lashkaripour Gholamreza Yarahamdi Bafghi Alireza Ghafoori Mohammad | 2015 | International Journal of Mining Science and Technology2015,25,1: | 5 |
| 2 | DEM simulation of confining pressure effects on crack opening displacement in hydraulic fracturing显示文摘Hydraulic fracture is one of the key methods in well stimulation to increase production of oil and gas.Crack Opening Displacement(COD) is of great importance in this method since it is in direct relation with permeability and production rate.In this paper COD is measured by a distinct element model which has been validated by an exact solution.A comprehensive study has been performed on confining pressure effect on COD which is neglected in the analytical solution.Numerical results showed that confining pressure considerably affects COD.A multi-parameter regression(considering effect of confining pressure,rock mass properties and fluid pressure) was performed on numerical results which resulted in an equation.The proposed equation considers the effect of confining pressure and its results are in good agreement with numerical results. | Abdollahipour Abolfazl Fatehi Marji Mohammad Yarahmadi Bafghi Alireza Gholamnejad Javad | 2016 | International Journal of Mining Science and Technology2016,26,4: | 2 |
| 3 | Early prenatal diagnosis of endocardial fibroelastosis显示文摘 | TRASTOUR C BAFGHI A DELOTTE J | 2005 | Ultrasound Obstet Gynecol2005,26,3: | 1 |
| 4 | Effect of gabapentin on postopera-tive pain and operation complications:a randomized placebo controlled trial显示文摘 | Behdad S Ayatollahi V Bafghi AT | 2012 | West Indian Med J2012,61,2: | 1 |
| 5 | Relationship between γ‐interferon gene polymorphisms and susceptibility to brucellosis infection显示文摘 | Ebrahim Eskandari‐Nasab Mehdi Moghadampour Seyed‐Shahaboddin Hasani Mehdi Hadadi‐fishani Seyyed‐Ali Mirghanizadeh‐Bafghi Abolghasem Asadi‐Saghandi Fateme Zare Behrooz Sadeghi‐Kalani Mehran Ghazali‐bina | 2013 | Microbiol Immunol2013,,: | 1 |
| 6 | Stability andvariability of knee kinematics during gait in knee osteoarthri-tis before and after replacement surgery显示文摘 | Yakhdani HR Bafghi HA Meijer OG | 2010 | Clin Bio-mech2010,25,3: | 1 |
| 7 | Reductive dissolution of manganese ore in sulfuric acid in thepresence of iron metal显示文摘 | Bafghi M S Zakeri A Ghasemi Z | 2007 | HydrometaUurgy2007,90,4: | 1 |
| 8 | The key-group method显示文摘 | Yarahmaidi Bafghi A R Verclel T | 2003 | International Journal for Numerical and Analytical Methods in Geomechanies2003,,27: | 1 |
| 9 | Effect of gabapentin on post- opera-tire pain and operation complications: a randomized placebo controlled trial 显示文摘 | Behdad S Ayatollahi V Bafghi AT | 2012 | West Indian Medical Journal2012,8,12: | 1 |
| 10 | Application of Rhamnolipid in the Formulation of a Detergent显示文摘 | KHAJE BAFGHI M FAZAELIPOOR M H | 2012 | Journal ofSurfactants and Detergents2012,15,6: | 1 |
| 11 | Determination of ore/waste contacts by using indicator kriging, case study: Choghart iron mine of Iran 显示文摘 | GHOLAMNEJAD J ANSARI A H YARAHMADI BAFGHI A TAQIZADEH M | 2010 | International Joumal of Engineering2010,23,: | 1 |
| 12 | Application of rhamnolipid in the formulation of a detergent 显示文摘 | BAFGHI M K FAZAELIPOOR M H | 2012 | Journal of Surfactants and Detergents2012,15,6: | 1 |
| 13 | A review on hydrometallurgical extraction and recovery of cadmium from various resources显示文摘 | Safarzadeh M S Bafghi M S Moradkhani D | 2007 | Minerals Engineering2007,20,: | 1 |
| 14 | Evaluation of two ClaPt'cations systems for Pelvie Prolapseon dynamie MRI显示文摘 | Novellas S Mondot L Bafghi A | 2009 | J Radiol2009,90,11: | 1 |
| 15 | A review on hydrometallurgical extraction and recovery of cadmium from various resources 显示文摘 | Safarzadeh M S Bafghi M S Moradkhani D | 2007 | Minerals Engineering2007,20,3: | 1 |
| 16 | On the accuracy of higher order displacement discontinuity method(HODDM) in the solution of linear elastic fracture mechanics problems显示文摘The higher order displacement discontinuity method(HODDM) utilizing special crack tip elements has been used in the solution of linear elastic fracture mechanics(LEFM) problems. The paper has selected several example problems from the fracture mechanics literature(with available analytical solutions) including center slant crack in an infinite and finite body, single and double edge cracks, cracks emanating from a circular hole. The numerical values of Mode Ⅰ and Mode Ⅱ SIFs for these problems using HODDM are in excellent agreement with analytical results(reaching up to 0.001% deviation from their analytical results). The HODDM is also compared with the XFEM and a modified XFEM results. The results show that the HODDM needs a considerably lower computational effort(with less than 400 nodes) than the XFEM and the modified XFEM(which needs more than 10000 nodes) to reach a much higher accuracy. The proposed HODDM offers higher accuracy and lower computation effort for a wide range of problems in LEFM. | Abolfazl Abdollahipour Mohammad Fatehi Marji Alireza Yarahmadi Bafghi Javad Gholamnejad | 2016 | Journal of Central South University2016,23,11: | 1 |
| 17 | Compar- ing the effects of Yasmin(R) and LD (low-dose estro- gen)as contraceptive methods on menstrual cycle changes in women referred to the health care centers of Isfahan显示文摘 | Fathizadeh N Bafghi RK Boroumandfar K | 2011 | Iran J Nurs Midwifery Res2011,15,4: | 1 |
| 18 | Modeling and Optimization of Surface Quality of Copper Deposits Recovered from Brass Scrap by Direct Electrowinning 显示文摘 | Aghazadeh M Zakeri A Bafghi M S | 2012 | Hydrometallurgy2012,,: | 1 |
| 19 | Sarma-based key-group method for rock slope reliability analyses 显示文摘 | Bafghi A R Y Verdel T | 2005 | International Jour- nal for Numerical and Analytical Methods in Geomechan- ics2005,29,10: | 1 |
| 20 | Mechanochemical synthesis of ZrB 2 –SiC–ZrC nanocomposite powder by metallothermic reduction of zircon显示文摘 | M. Jalaly M. Tamizifar M.Sh. Bafghi F.J. Gotor | 2013 | Journal of Alloys and Compounds2013,,: | 1 |