Results 31 to 40 of about 165,525 (289)

Fracturing highly disordered materials

, 2012
We investigate the role of disorder on the fracturing process of heterogeneous materials by means of a two-dimensional fuse network model. Our results in the extreme disorder limit reveal that the backbone of the fracture at collapse, namely the subset ...
A. A. Moreira, A. Hansen, C. L. N. Oliveira, D. Stauffer, H. J. Herrmann, J. S. Andrade, M. F. Kanninen, M. P. Marder, N. A. M. Araújo   +8 more
core   +1 more source

Fracturing the optimal paths

, 2009
Optimal paths play a fundamental role in numerous physical applications ranging from random polymers to brittle fracture, from the flow through porous media to information propagation.
Andrade Jr, J. S., Herrmann, H. J., Moreira, A. A., Oliveira, E. A.   +3 more
core   +1 more source

Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]

, 2019
Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O, Kononenko, M, Kovalenko, I, Savchenko, M   +3 more
core   +1 more source

Interaction between Injection Points during Hydraulic Fracturing

, 2012
We present a model of the hydraulic fracturing of heterogeneous poroelastic media. The formalism is an effective continuum model that captures the coupled dynamics of the fluid pressure and the fractured rock matrix and models both the tensile and shear ...
Adachi, Aghighi, Akulich, Bear, Bear, Brady, Bundschuh, Cosad, Evans, Evans, Flekkøy, Hansen, Herrmann, Inga Berre, Jaeger, Kjetil M. D. Hals, Knott, Landau, Langtangen, Masihi, Paterson, Press, Pruess, Samardzioska, Shekhar, Tzschichholtz, Tzschichholtz, Tzschichholtz, Wang, Wangen, Warren, Wu   +31 more
core   +1 more source

Method for constructing diffraction images of fractured-cavernous zones on the basis of multidimensional spectral filtration and new possibilities for studying the properties of geological media on the basis of multidimensional seismic data analysis of a common image point

Georesursy, 2018
The article describes the results of applying the original seismic data processing methods: Common Scattering Point Dip (CSPD) and Vector Pair Reverse Time Migration (VPRTM).
E.V. Anokhina, G.N. Erokhin
doaj   +1 more source

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa, Daisuke Honda, Seigo Akari, Tadao Akizawa   +3 more
wiley   +1 more source

What’s Shakin’? Ladra v. New Dominion, LLC: A Case of Consequence for the Hydraulic Fracturing Industry and Those Affected by Induced Seismicity [PDF]

, 2017
This analysis is accompanied by a study of a 2015 ruling of the Supreme Court of Oklahoma, Ladra v. New Dominion, LLC. The case considered the possibility of a private tort action by homeowners against the operators of injection wells proceeding within ...
Logan, James Patrick
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

CO₂ Foamed Viscoelastic Gel-Based Seawater Fracturing Fluid for High-Temperature Wells

Gels
This study investigates the development of a novel CO2-foamed viscoelastic gel-based fracturing fluid to address the challenges of high-temperature formations. The influence of various parameters, including surfactant type and concentration, gas fraction,
Jawad Al-Darweesh, Murtada Saleh Aljawad, Muhammad Shahzad Kamal, Mohamed Mahmoud, Shabeeb Alajmei, Prasad B. Karadkar, Bader G. Harbi   +6 more
doaj   +1 more source

The evolution of the crustal stress state of the Catoca kimberlite pipe area (northeastern Angola)

Геодинамика и тектонофизика, 2018
This paper presents the first results of the geostructural and tectonophysical studies of the crustal stress state in the Catoca kimberlite pipe area at the southwestern flank of the Kasai Shield in the northeasternAngola. In the evolution of the crustal
O. V. Lunina, A. S. Gladkov, D. P. Gladkochub, F. João, M. A. Karpenko, J. T. Félix, D. A. Koshkarev, E. V. Sklyarov   +7 more
doaj   +1 more source