Results 251 to 260 of about 3,374,783 (301)

The Effective Fracture Toughness in Hydraulic Fracturing

International Journal of Fracture, 1999
This paper examines the effective fracture toughness approach which is used in hydraulic fracturing in order to explain the high net-pressures that are often observed in field operations. The effective fracture toughness is calculated using a fully deterministic elasto-plastic hydraulic fracturing model.
Papanastasiou, Panos C., Papanastasiou, Panos C.   +1 more
openaire   +3 more sources

Effect of Fracture Conductivity on Effective Fracture Length

SPE Annual Technical Conference and Exhibition, 2003
Abstract Fracturing fluid that remains in the fracture and formation after a hydraulic fracture treatment can decrease the productivity of a gas well by reducing the relative permeability to gas in the region invaded by this fluid. This fluid can block the gas flow into the fracture, thus reducing the effective fracture length.
Elyezer Lolon, Duane McVay, Stephen Schubarth   +2 more
openaire   +1 more source

Cost-Effectiveness of the Concord Minimal Trauma Fracture Liaison Service, a Prospective, Controlled Fracture Prevention Study

Osteoporosis International, 2012
Summary: We evaluated the cost-effectiveness of a fracture liaison service prospectively designed to have a parallel control group treated by standard care.
Andrew Palmer, Mark S. Cooper, M J Seibel   +2 more
exaly   +1 more source

EFFECT OF FRACTURE ON RAT PLATELETS

Acta Pathologica Microbiologica Scandinavica Section A Pathology, 1972
Experimental fracture in rats was followed by simultaneous increase in platelet count, platelet stickiness, and occurrence of intravascular platelet aggregates in sections of lungs and kidneys. The method used for estimation of platelet stickiness thus seemed to reflect conditions in vivo.
G K, Endressen, O P, Grüner
openaire   +2 more sources

Effect of lymphedema on the recovery of fractures

Journal of Orthopaedic Science, 2007
Lymphedema delays the healing of any wound by negatively affecting its inflammatory period. Whether it affects bone healing in a similar negative manner is unknown. Therefore, we experimentally investigated the effect of lymphedema on fracture recovery.We used thirty 200- to 250-g Sprague-Dawley rats for the experiment.
Arslan, Hueseyin, Uludag, Abuzer, Kapukaya, Ahmet, Gezici, Ayten, Bekler, H. Ibrahim, Ketani, Aydin   +5 more
openaire   +2 more sources

The Effect of Calcitonin on Fracture Healing

Clinical Orthopaedics and Related Research, 1979
Corrective osteotomy of the long bones may be required in patients with Paget's disease. Experiments on rabbits suggest that the safety of the procedures is of concern while the patient receives Calcitonin. Twenty-four rabbits were divided into 4 groups of 6 animals. Half of each group received maintenance doses of Calcitonin subcutaneously.
J, Schatzker, M, Chapman, G B, Ha'Eri, V L, Fornasier, G, Sumner-Smith, C, Williams   +5 more
openaire   +2 more sources

Effect of Vitamin A on Fracture Risk

Annals of Pharmacotherapy, 2005
OBJECTIVE To describe current data evaluating the effect of vitamin A intake on fracture risk. DATA SOURCES A literature search using MEDLINE (1966–March 2005) was conducted using the search terms bone density, fractures, osteoporosis,
Heather A, Jackson, Amy Heck, Sheehan
openaire   +2 more sources

Ibandronate: is there an effect on nonvertebral fractures?

Clinical Rheumatology, 2008
Although ibandronate improves suboptimal compliance in patients receiving weekly bisphosphonates, there is a concern about its effect on the reduction of nonvertebral fractures. In the era of evidence-based medicine, randomized clinical trials are considered the highest quality evidence which guide us to the best clinical decision.
Vlak, Tonko, Koršić, Mirko, Kaštelan, Darko   +2 more
openaire   +3 more sources

Effect of Fracturing Fluids on Fracture Conductivity

Journal of Petroleum Technology, 1975
Several types of fracturing fluids were tested for potential adverse effects on fracture conductivity. A predictive method based on the volume of residue in a fluid after it degrades was developed that describes the local effect of fluid residue on fracture conductivity. Introduction Fracturing fluids
openaire   +1 more source

Effects of Fracture Fixation Stability on Ossification in Healing Fractures

Clinical Orthopaedics and Related Research, 2004
Temporal distribution of intramembranous and endochondral bone formation was studied in experimental fracture defects in rats under different stability of fracture fixation and fracture environments. Animals were surgically treated with a specially developed external fixation construct: Group 1 had 42 rats with a 0-mm fracture gap with bone ends ...
Hans, Mark, Anders, Nilsson, Ulf, Nannmark, Björn, Rydevik   +3 more
openaire   +2 more sources